:root {
    /* Global shared defaults */
    --font-heading: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, 'Courier New', monospace;
    --transition-smooth: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 8-Step Modular Typography Scale (WCAG & Industrial Ergonomics Standard) */
    --text-2xs: 0.625rem;  /* 10px - 超微小バッジ、ゲージキャプション、補助単位 */
    --text-xs:  0.6875rem; /* 11px - 補足説明、メタデータ、ツールチップ */
    --text-sm:  0.75rem;   /* 12px - フォームラベル、サブテキスト、チップ、ボタンスモール */
    --text-base: 0.8125rem; /* 13px - 入力コントロール値、標準ボタン、テーブルデータ */
    --text-md:  0.875rem;  /* 14px - アコーディオン見出し、タブボタン、小見出し */
    --text-lg:  1.0rem;    /* 16px - モーダル見出し、カードメインタイトル */
    --text-xl:  1.25rem;   /* 20px - 主要テレメトリ数値、中間強調見出し */
    --text-2xl: 1.5rem;    /* 24px - ページメインタイトル、特大数値 */

    /* Common Radius Defaults */
    --border-radius-lg: 14px;
    --border-radius-md: 10px;
    --border-radius-sm: 6px;
    --border-radius-xs: 4px;
}

/* Language-specific optimized font stacks (preventing cross-language glyph replacement) */
html[lang="ja"] {
    --font-heading: 'Outfit', 'Inter', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', 'Yu Gothic UI', 'Meiryo', sans-serif;
    --font-body: 'Inter', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', 'Yu Gothic UI', 'Meiryo', sans-serif;
}

html[lang="zh-CN"],
html[lang="zh"] {
    --font-heading: 'Outfit', 'Inter', 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'HarmonyOS Sans SC', sans-serif;
    --font-body: 'Inter', 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'HarmonyOS Sans SC', sans-serif;
}

html[lang="en"] {
    --font-heading: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* Tabular figures for stable telemetry readouts */
.metric-value, .detail-row strong, .print-table td, .bom-table td, .readout-value, .readout-sub {
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum";
}

/* ==========================================================================
   THEME 1: Neon (Dark Spatial Liquid UI)
   ========================================================================== */
body.theme-cyber-neon,
body.neon-cyber-theme,
body.theme-liquid-glass {
    --bg-dark: #080c1a;
    --bg-page-gradient: radial-gradient(ellipse at 20% 0%, rgba(56, 189, 248, 0.10) 0%, transparent 50%),
                        radial-gradient(ellipse at 80% 10%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
                        radial-gradient(ellipse at 50% 90%, rgba(52, 211, 153, 0.06) 0%, transparent 50%);
    --bg-header: rgba(15, 23, 42, 0.72);
    --bg-card: rgba(15, 23, 42, 0.72);
    --bg-card-header: rgba(30, 41, 59, 0.50);
    --bg-card-border: rgba(255, 255, 255, 0.15);
    --bg-card-hover: rgba(30, 41, 59, 0.78);
    --bg-input: rgba(8, 14, 30, 0.80);
    --bg-subtle: rgba(15, 23, 42, 0.60);
    --bg-modal: rgba(10, 16, 32, 0.92);
    --bg-canvas-wrapper: #060a16;

    --border-radius-lg: 20px;
    --border-radius-md: 14px;
    --border-radius-sm: 10px;
    --border-radius-xs: 6px;

    /* Multi-layer specular highlights + ambient shadows */
    --card-shadow: inset 0 1px 1px 0 rgba(255, 255, 255, 0.35),
                   inset 0 -1px 2px 0 rgba(0, 0, 0, 0.25),
                   0 4px 16px -2px rgba(0, 0, 0, 0.40),
                   0 16px 32px -8px rgba(0, 0, 0, 0.30);
    --card-shadow-hover: inset 0 1px 2px 0 rgba(255, 255, 255, 0.45),
                         inset 0 -1px 2px 0 rgba(0, 0, 0, 0.30),
                         0 8px 24px -4px rgba(0, 0, 0, 0.50),
                         0 20px 40px -8px rgba(0, 0, 0, 0.35);
    --card-backdrop: blur(24px) saturate(180%);

    --accent-cyan: #38bdf8;
    --accent-cyan-glow: rgba(56, 189, 248, 0.25);
    --accent-on-cyan: #020617; /* High contrast text on Cyan */
    --accent-purple: #a78bfa;
    --accent-purple-glow: rgba(167, 139, 250, 0.25);
    --accent-emerald: #34d399;
    --accent-emerald-glow: rgba(52, 211, 153, 0.25);
    --accent-on-emerald: #020617; /* High contrast text on Emerald */
    --accent-amber: #fbbf24;
    --accent-amber-glow: rgba(251, 191, 36, 0.25);
    --accent-rose: #fb7185;
    --accent-rose-glow: rgba(251, 113, 133, 0.25);
    --accent-indigo: #818cf8;

    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.85);
    --text-muted: rgba(255, 255, 255, 0.60);
    --text-heading-gradient: linear-gradient(135deg, #ffffff, #a5b4fc);

    --btn-primary-bg: linear-gradient(135deg, #38bdf8, #818cf8);
    --btn-primary-text: #020617;
    --btn-primary-shadow: 0 0 20px rgba(56, 189, 248, 0.30);

    --logo-bg: linear-gradient(135deg, #38bdf8, #a78bfa);
    --logo-text: #020617;
    --logo-shadow: 0 0 20px rgba(56, 189, 248, 0.35);

    --canvas-bg: #060a16;
    --canvas-panel-bg1: rgba(15, 23, 42, 0.80);
    --canvas-panel-bg2: rgba(30, 41, 59, 0.65);
    --canvas-panel-border: rgba(56, 189, 248, 0.50);
    --canvas-dim-text: #ffffff;
    --canvas-dim-line: #94a3b8;
}

/* ==========================================================================
   THEME 2: Studio (Light Organic Liquid UI)
   ========================================================================== */
body.theme-warm-studio,
body.theme-warm-glass {
    --bg-dark: #e8e2d5;
    --bg-page-gradient: radial-gradient(ellipse at 15% 10%, rgba(13, 148, 136, 0.12) 0%, transparent 45%),
                        radial-gradient(ellipse at 85% 15%, rgba(217, 119, 6, 0.10) 0%, transparent 45%),
                        radial-gradient(ellipse at 50% 85%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
                        radial-gradient(ellipse at 80% 80%, rgba(99, 102, 241, 0.06) 0%, transparent 45%);
    --bg-header: rgba(255, 255, 255, 0.72);
    --bg-card: rgba(255, 255, 255, 0.58);
    --bg-card-header: rgba(255, 255, 255, 0.45);
    --bg-card-border: rgba(255, 255, 255, 0.75);
    --bg-card-hover: rgba(255, 255, 255, 0.78);
    --bg-input: rgba(255, 255, 255, 0.75);
    --bg-subtle: rgba(235, 229, 218, 0.60);
    --bg-modal: rgba(255, 255, 255, 0.94);
    --bg-canvas-wrapper: #dfd9cb;

    --border-radius-lg: 20px;
    --border-radius-md: 14px;
    --border-radius-sm: 10px;
    --border-radius-xs: 6px;

    /* Light-mode Liquid UI: frosted white specular + luminous 1px border */
    --card-shadow: inset 0 1.5px 2px 0 rgba(255, 255, 255, 0.95),
                   inset 0 -1px 2px 0 rgba(0, 0, 0, 0.04),
                   0 4px 16px -2px rgba(45, 42, 38, 0.07),
                   0 12px 32px -6px rgba(45, 42, 38, 0.10);
    --card-shadow-hover: inset 0 2px 3px 0 rgba(255, 255, 255, 1.0),
                         inset 0 -1px 2px 0 rgba(0, 0, 0, 0.06),
                         0 6px 20px -2px rgba(45, 42, 38, 0.10),
                         0 16px 36px -6px rgba(45, 42, 38, 0.14);
    --card-backdrop: blur(24px) saturate(180%);

    --accent-cyan: #0d9488;
    --accent-cyan-glow: rgba(13, 148, 136, 0.20);
    --accent-on-cyan: #ffffff; /* High contrast white text on Studio Teal/Green */
    --accent-purple: #b45309;
    --accent-purple-glow: rgba(180, 83, 9, 0.20);
    --accent-emerald: #10b981;
    --accent-emerald-glow: rgba(16, 185, 129, 0.20);
    --accent-on-emerald: #ffffff; /* High contrast white text on Studio Emerald */
    --accent-amber: #d97706;
    --accent-amber-glow: rgba(217, 119, 6, 0.20);
    --accent-rose: #e11d48;
    --accent-rose-glow: rgba(225, 29, 72, 0.20);
    --accent-indigo: #4f46e5;

    --text-primary: #0f172a;
    --text-secondary: #1e293b;
    --text-muted: #475569;
    --text-heading-gradient: linear-gradient(135deg, #0f172a, #0d9488);

    --btn-primary-bg: linear-gradient(135deg, #0d9488, #0f766e);
    --btn-primary-text: #ffffff;
    --btn-primary-shadow: 0 4px 14px rgba(13, 148, 136, 0.28);

    --logo-bg: linear-gradient(135deg, #292524, #0d9488);
    --logo-text: #f4f1ea;
    --logo-shadow: 0 4px 16px rgba(41, 37, 36, 0.18);

    --canvas-bg: #dfd9cb;
    --canvas-panel-bg1: rgba(255, 255, 255, 0.88);
    --canvas-panel-bg2: rgba(240, 235, 225, 0.72);
    --canvas-panel-border: rgba(13, 148, 136, 0.45);
    --canvas-dim-text: #0f172a;
    --canvas-dim-line: #78716c;
}

/* Base resets & layouts */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
}

body {
    width: 100%;
    max-width: 100vw;
    background-color: var(--bg-dark);
    background-image: var(--bg-page-gradient);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.88rem;
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    transition: background-color 0.25s ease, color 0.25s ease;
}

/* Theme Selector Control in Header */
.theme-selector-container {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    padding: 2px 6px;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--card-shadow);
}

.theme-icon {
    font-size: 0.85rem;
}

.theme-select {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-size: 0.76rem;
    font-weight: 600;
    cursor: pointer;
    outline: none;
    padding: 0.25rem 0.2rem;
    width: auto;
}

.theme-select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

/* Header design */
.app-header {
    background: var(--bg-header);
    backdrop-filter: var(--card-backdrop);
    border-bottom: 1px solid var(--bg-card-border);
    padding: 0.65rem 1.75rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--card-shadow);
}


/* Neon: Header top-edge luminous gradient border */
body.theme-cyber-neon .app-header {
    border-bottom: none;
    border-image: linear-gradient(90deg, rgba(255,255,255,0.02), rgba(255,255,255,0.20), rgba(255,255,255,0.02)) 1;
    border-image-slice: 1;
    border-bottom-width: 1px;
    border-bottom-style: solid;
}

/* Neon: Card glass sheen overlay */
body.theme-cyber-neon .accordion-item,
body.theme-cyber-neon .visual-card,
body.theme-cyber-neon .metric-card {
    position: relative;
    overflow: hidden;
}

body.theme-cyber-neon .accordion-item::before,
body.theme-cyber-neon .visual-card::before,
body.theme-cyber-neon .metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 45%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0) 100%);
    pointer-events: none;
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    z-index: 0;
}

/* Neon: Enhanced text shadow for readability */
body.theme-cyber-neon .accordion-header,
body.theme-cyber-neon .metric-value,
body.theme-cyber-neon .detail-row,
body.theme-cyber-neon .section-label,
body.theme-cyber-neon .setting-label {
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.30);
}

/* Studio: Header luminous gradient border (light mode) */
body.theme-warm-studio .app-header {
    border-bottom: none;
    border-image: linear-gradient(90deg, rgba(255,255,255,0.4), rgba(255,255,255,0.9), rgba(255,255,255,0.4)) 1;
    border-image-slice: 1;
    border-bottom-width: 1px;
    border-bottom-style: solid;
}

/* Studio: Card glass sheen overlay (light mode) */
body.theme-warm-studio .accordion-item,
body.theme-warm-studio .visual-card,
body.theme-warm-studio .metric-card {
    position: relative;
    overflow: hidden;
}

body.theme-warm-studio .accordion-item::before,
body.theme-warm-studio .visual-card::before,
body.theme-warm-studio .metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 45%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.45) 0%, rgba(255, 255, 255, 0) 100%);
    pointer-events: none;
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    z-index: 0;
}

/* Ensure all card header content stays crisp above glass sheen overlays */
.accordion-header,
.accordion-content,
.visual-header,
.visual-toolbar,
.metric-header,
.metric-value-row,
.metric-value,
.metric-details {
    position: relative;
    z-index: 1;
}

body.theme-warm-studio .accordion-header {
    background: rgba(255, 255, 255, 0.50);
    color: #0f172a;
    font-weight: 700;
}

body.theme-warm-studio .metric-title {
    color: #0f172a;
    font-weight: 700;
}

body.theme-warm-studio .card-title-lg {
    color: #0f172a;
    font-weight: 800;
}

/* Studio Theme: WCAG High-Contrast Readability Overrides */
body.theme-warm-studio .menu-popover-badge {
    background: #0d9488;
    color: #ffffff !important;
    font-weight: 800;
    box-shadow: 0 1px 4px rgba(13, 148, 136, 0.35);
}

body.theme-warm-studio .menu-section-label {
    color: #0f766e; /* Deep emerald-teal for high contrast on light backgrounds */
}

body.theme-warm-studio .menu-popover-title {
    color: #0f172a;
}

body.theme-warm-studio .menu-action-item {
    background: rgba(255, 255, 255, 0.70);
    border-color: rgba(0, 0, 0, 0.10);
    color: #0f172a;
}

body.theme-warm-studio .menu-action-item:hover {
    background: #ffffff;
    border-color: #0d9488;
    box-shadow: 0 2px 10px rgba(13, 148, 136, 0.18);
}

body.theme-warm-studio .menu-action-item:hover .action-main {
    color: #0f766e;
}

body.theme-warm-studio .menu-action-text .action-main {
    color: #0f172a;
}

body.theme-warm-studio .menu-action-text .action-sub {
    color: #64748b;
}

body.theme-warm-studio .step-num,
body.theme-warm-studio .step-badge {
    background: rgba(255, 255, 255, 0.85);
    border-color: rgba(15, 23, 42, 0.20);
    color: #475569;
}

body.theme-warm-studio .step-title {
    color: #334155;
}

body.theme-warm-studio .step-subtitle {
    color: #64748b;
}

body.theme-warm-studio .step-item:hover {
    background: rgba(255, 255, 255, 0.65);
}

body.theme-warm-studio .step-item.active .step-num,
body.theme-warm-studio .step-item.active .step-badge {
    background: #0d9488;
    color: #ffffff !important;
    border-color: #0d9488;
    font-weight: 800;
    box-shadow: 0 2px 8px rgba(13, 148, 136, 0.35);
}

body.theme-warm-studio .step-item.active .step-title {
    color: #0f172a;
    font-weight: 700;
}

body.theme-warm-studio .step-item.active .step-subtitle {
    color: #0f766e;
    font-weight: 600;
}

body.theme-warm-studio .lang-btn.active,
body.theme-warm-studio .unit-btn.active,
body.theme-warm-studio .theme-pill-btn.active,
body.theme-warm-studio .sub-tab-btn.active {
    background: #0d9488;
    color: #ffffff !important;
    border-color: #0d9488;
    font-weight: 700;
    box-shadow: 0 1px 4px rgba(13, 148, 136, 0.25);
}

body.theme-warm-studio .btn-header-secondary {
    background: rgba(255, 255, 255, 0.75);
    border-color: rgba(0, 0, 0, 0.12);
    color: #0f172a;
}

body.theme-warm-studio .btn-header-secondary:hover {
    background: #ffffff;
    border-color: #0d9488;
    color: #0f766e;
}

body.theme-warm-studio .btn-menu-toggle {
    background: rgba(255, 255, 255, 0.75);
    border-color: rgba(0, 0, 0, 0.12);
    color: #0f172a;
}

body.theme-warm-studio .btn-menu-toggle:hover {
    background: #ffffff;
    border-color: #0d9488;
    color: #0f766e;
}

body.theme-warm-studio .btn-menu-toggle.active {
    background: rgba(13, 148, 136, 0.15);
    border-color: #0d9488;
    color: #0f766e;
}

body.theme-warm-studio .kbd-badge {
    background: rgba(255, 255, 255, 0.85);
    border-color: rgba(0, 0, 0, 0.15);
    color: #0f766e;
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.15);
}

body.theme-warm-studio .quick-preset-title {
    color: #0f766e;
}

body.theme-warm-studio .preset-chip {
    background: rgba(255, 255, 255, 0.80);
    border-color: rgba(0, 0, 0, 0.12);
    color: #0f172a;
}

body.theme-warm-studio .preset-chip:hover {
    background: #0d9488;
    color: #ffffff;
    border-color: #0d9488;
}

body.theme-warm-studio .readout-value {
    color: #0f766e;
}

body.theme-warm-studio .highlight-cyan {
    color: #0f766e !important;
}

body.theme-warm-studio .highlight-emerald {
    color: #065f46 !important;
}

body.theme-warm-studio .workflow-steps-nav {
    background: #ffffff;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

body.theme-warm-studio .step-item:hover {
    background: rgba(13, 148, 136, 0.08);
}

body.theme-warm-studio .step-item.active .step-num {
    background: #0d9488;
    color: #ffffff;
    border-color: #0d9488;
    box-shadow: 0 2px 8px rgba(13, 148, 136, 0.25);
}

body.theme-warm-studio .step-item.active .step-title {
    color: #0f172a;
    font-weight: 700;
}

body.theme-warm-studio .step-num {
    background: #f8fafc;
    border-color: #cbd5e1;
    color: #475569;
}

body.theme-warm-studio .step-title {
    color: #334155;
}

body.theme-warm-studio .step-subtitle {
    color: #64748b;
}

body.theme-warm-studio .step-connector {
    background: #cbd5e1;
}

.header-container {
    max-width: 1800px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.cyber-logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--border-radius-sm);
    box-shadow: 0 0 16px rgba(56, 189, 248, 0.25);
    flex-shrink: 0;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cyber-logo-icon:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(56, 189, 248, 0.45);
}

body.theme-warm-studio .cyber-logo-icon {
    box-shadow: 0 4px 14px rgba(45, 42, 38, 0.14);
}

body.theme-warm-studio .cyber-logo-icon:hover {
    box-shadow: 0 6px 20px rgba(13, 148, 136, 0.25);
}

.header-logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    border-radius: var(--border-radius-sm);
}

.logo-text h1 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--text-primary);
    background: var(--text-heading-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: var(--text-primary);
}

.subtitle {
    font-size: 0.72rem;
    color: var(--accent-cyan);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

/* Language Toggle in Header */
.lang-toggle-container {
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    padding: 2px;
    border-radius: var(--border-radius-sm);
    display: flex;
    box-shadow: var(--card-shadow);
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.35rem 0.65rem;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    border-radius: var(--border-radius-xs);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.lang-btn.active {
    background: var(--bg-card-border);
    color: var(--accent-cyan);
    box-shadow: 0 0 8px var(--accent-cyan-glow);
}

/* Common Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.45rem 0.85rem;
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    font-weight: 700;
    box-shadow: var(--btn-primary-shadow);
}

.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-card-header);
    border: 1px solid var(--bg-card-border);
    color: var(--text-primary);
    box-shadow: var(--card-shadow);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

/* ==========================================================================
   PRO HAMBURGER & QUICK-ACTION POPOVER HUB
   ========================================================================== */
.menu-dropdown-wrapper {
    position: relative;
    display: inline-block;
}

.btn-menu-toggle {
    background: var(--bg-card-header);
    border: 1px solid var(--bg-card-border);
    color: var(--text-primary);
    width: 38px;
    height: 38px;
    padding: 0;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: var(--card-shadow);
    position: relative;
    overflow: hidden;
}

.btn-menu-toggle:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 16px var(--accent-cyan-glow), 0 2px 8px rgba(0, 0, 0, 0.3);
    transform: translateY(-1px);
}

.btn-menu-toggle:active {
    transform: scale(0.92);
}

.btn-menu-toggle.active {
    background: rgba(6, 182, 212, 0.12);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 18px var(--accent-cyan-glow);
}

.menu-icon-bars {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 18px;
    height: 14px;
    position: relative;
}

.menu-icon-bars .bar {
    display: block;
    width: 100%;
    height: 2px;
    background-color: currentColor;
    border-radius: 2px;
    transition: transform 0.28s cubic-bezier(0.2, 0, 0, 1),
                opacity 0.2s ease,
                width 0.2s ease,
                background-color 0.2s ease;
    transform-origin: center;
}

/* Dynamic hover effect on bars when closed */
.btn-menu-toggle:not(.active):hover .menu-icon-bars .bar:nth-child(1) {
    transform: translateY(-1px);
}
.btn-menu-toggle:not(.active):hover .menu-icon-bars .bar:nth-child(2) {
    width: 70%;
    margin-left: auto;
}
.btn-menu-toggle:not(.active):hover .menu-icon-bars .bar:nth-child(3) {
    transform: translateY(1px);
}

/* Modern morphing animation to Cross (X) when menu is opened */
.btn-menu-toggle.active .menu-icon-bars .bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.btn-menu-toggle.active .menu-icon-bars .bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.btn-menu-toggle.active .menu-icon-bars .bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Popover Hub Container */
.menu-popover {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 330px;
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    backdrop-filter: var(--card-backdrop);
    -webkit-backdrop-filter: var(--card-backdrop);
    border-radius: var(--border-radius-md);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45), 0 0 1px rgba(255, 255, 255, 0.1);
    z-index: 200;
    display: flex;
    flex-direction: column;
    animation: popoverFadeIn 0.18s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}

.menu-popover.hidden {
    display: none !important;
}

@keyframes popoverFadeIn {
    from {
        opacity: 0;
        transform: translateY(-6px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.menu-popover-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.7rem 0.9rem;
    background: var(--bg-card-header);
    border-bottom: 1px solid var(--bg-card-border);
}

.menu-popover-title-area {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.menu-popover-badge {
    background: var(--accent-cyan);
    color: var(--accent-on-cyan, #020617);
    font-family: var(--font-heading);
    font-size: var(--text-2xs);
    font-weight: 800;
    padding: 0.15rem 0.4rem;
    border-radius: var(--border-radius-xs);
    letter-spacing: 0.05em;
    box-shadow: 0 0 8px var(--accent-cyan-glow);
}

.menu-popover-title {
    font-family: var(--font-heading);
    font-size: var(--text-md);
    font-weight: 700;
    color: var(--text-primary);
}

.menu-popover-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: var(--text-lg);
    line-height: 1;
    cursor: pointer;
    padding: 0.2rem;
    border-radius: var(--border-radius-xs);
    transition: var(--transition-smooth);
}

.menu-popover-close:hover {
    color: var(--accent-rose);
    transform: scale(1.15);
}

.menu-section {
    padding: 0.65rem 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.menu-section-label {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent-cyan);
}

.menu-grid-actions {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.menu-action-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.5rem 0.65rem;
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    cursor: pointer;
    text-align: left;
    transition: var(--transition-smooth);
    width: 100%;
}

.menu-action-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-cyan);
    transform: translateX(2px);
    box-shadow: 0 2px 8px var(--accent-cyan-glow);
}

.menu-action-icon {
    font-size: var(--text-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.menu-action-text {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.menu-action-text .action-main {
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--text-primary);
}

.menu-action-item:hover .action-main {
    color: var(--accent-cyan);
}

.menu-action-text .action-sub {
    font-size: var(--text-xs);
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.menu-divider {
    height: 1px;
    background: var(--bg-card-border);
    margin: 0;
}

/* Preferences & Settings Rows */
.menu-setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin: 0.15rem 0;
}

.menu-setting-row .setting-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-secondary);
}

.unit-toggle-container {
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    padding: 2px;
    border-radius: var(--border-radius-sm);
    display: flex;
}

.unit-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--border-radius-xs);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.unit-btn.active {
    background: var(--bg-card-border);
    color: var(--accent-cyan);
}

.menu-theme-group {
    display: flex;
    gap: 0.3rem;
}

.theme-pill-btn {
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    color: var(--text-secondary);
    padding: 0.25rem 0.55rem;
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--border-radius-xs);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    transition: var(--transition-smooth);
}

.theme-pill-btn:hover {
    color: var(--text-primary);
    border-color: var(--accent-cyan);
}

.theme-pill-btn.active {
    background: var(--bg-card-border);
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
}

/* Popover Footer */
.menu-popover-footer {
    padding: 0.55rem 0.85rem;
    background: var(--bg-card-header);
    border-top: 1px solid var(--bg-card-border);
}

.footer-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.68rem;
}

.app-version-tag {
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.app-version-tag strong {
    color: var(--accent-cyan);
}

.app-status-tag {
    color: var(--accent-emerald);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--accent-emerald);
    box-shadow: 0 0 6px var(--accent-emerald-glow);
    display: inline-block;
}

.btn-file-label {
    margin: 0;
    cursor: pointer;
}

/* Dashboard Base Container */
.dashboard-grid {
    width: 100%;
    max-width: 100vw;
    margin: 0 auto;
    box-sizing: border-box;
    min-width: 0;
}

.dashboard-col {
    display: flex;
    flex-direction: column;
    min-width: 0;
    width: 100%;
    box-sizing: border-box;
}

.col-center {
    gap: 0.75rem;
    height: 100%;
    min-width: 0;
}

/* Custom Accordion Panels & Neon Accent Hover Effects */
.accordion-item {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-top: 2px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: var(--card-backdrop);
    border-radius: var(--border-radius-md);
    box-shadow: var(--card-shadow);
    overflow: hidden;
    position: relative;
    transition: border-color 0.22s ease, box-shadow 0.22s ease, background-color 0.22s ease, transform 0.2s ease;
    width: 100%;
    min-width: 0;
    box-sizing: border-box;
}

/* Accordion Specific Neon Accents (Matching Telemetry Right Column) */
#accordion-project {
    --acc-color: var(--accent-cyan);
    --acc-glow: var(--accent-cyan-glow);
}
#accordion-panel {
    --acc-color: var(--accent-indigo);
    --acc-glow: rgba(99, 102, 241, 0.25);
}
#accordion-layout {
    --acc-color: var(--accent-purple);
    --acc-glow: rgba(168, 85, 247, 0.25);
}
#accordion-electric {
    --acc-color: var(--accent-amber);
    --acc-glow: rgba(245, 158, 11, 0.25);
}
#accordion-rigging {
    --acc-color: var(--accent-emerald);
    --acc-glow: rgba(16, 185, 129, 0.25);
}

/* Default subtle top accent for active state */
.accordion-item.active {
    border-top-color: var(--acc-color, var(--accent-cyan));
}

/* Hover Neon Line & Glow (Works seamlessly when collapsed or expanded) */
.accordion-item:hover {
    border-color: var(--acc-color, var(--accent-cyan));
    border-top-color: var(--acc-color, var(--accent-cyan));
    box-shadow: 0 4px 20px var(--acc-glow, var(--accent-cyan-glow)), var(--card-shadow);
    background: var(--bg-card-hover);
}

.accordion-header {
    width: 100%;
    background: var(--bg-card-header);
    border: none;
    color: var(--text-primary);
    padding: 0.85rem 1.15rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--text-md);
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.accordion-header:hover {
    background: var(--bg-card-hover);
    color: var(--acc-color, var(--accent-cyan));
}

.accordion-header .icon {
    margin-right: 0.65rem;
    font-size: var(--text-lg);
    transition: transform 0.2s ease;
}

.accordion-item:hover .accordion-header .icon {
    transform: scale(1.12);
}

.accordion-header .arrow {
    margin-left: auto;
    font-size: var(--text-2xs);
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.accordion-item:not(.active) .accordion-header .arrow {
    transform: rotate(180deg);
}

.accordion-content {
    padding: 1.1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.accordion-item:not(.active) .accordion-content {
    display: none;
}

/* Inputs & Form styling */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.label-with-action {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.text-btn {
    background: none;
    border: none;
    color: var(--accent-cyan);
    font-size: var(--text-sm);
    font-weight: 600;
    cursor: pointer;
    padding: 0;
    transition: var(--transition-smooth);
}

.text-btn:hover {
    text-decoration: underline;
    color: #38bdf8;
}

input[type="number"], input[type="text"], select {
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    font-size: var(--text-base);
    font-family: var(--font-mono);
    width: 100%;
    transition: var(--transition-smooth);
}

input[type="text"] {
    font-family: var(--font-body);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 2px var(--accent-cyan-glow);
}

.grid-2-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.65rem;
}

.margin-top-sm {
    margin-top: 0.4rem;
}

.margin-bottom-sm {
    margin-bottom: 0.4rem;
}

.cyber-divider {
    border: none;
    border-top: 1px dashed var(--bg-card-border);
    margin: 0.4rem 0;
}

/* Tabs */
.tab-container {
    display: flex;
    background: var(--bg-input);
    padding: 3px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--bg-card-border);
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.45rem 0.6rem;
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--border-radius-xs);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.tab-btn.active {
    background: var(--bg-card-header);
    color: var(--accent-cyan);
    box-shadow: var(--card-shadow);
}

/* Spinners with Accessible Touch Hit Areas */
.spinner-container {
    display: flex;
    align-items: center;
    position: relative;
    height: 38px;
}

.spinner-container input {
    text-align: center;
    padding-left: 2.75rem;
    padding-right: 2.75rem;
    height: 100%;
    font-size: 0.95rem;
}

.spin-btn {
    position: absolute;
    top: 1px;
    bottom: 1px;
    width: 2.5rem;
    background: var(--bg-card-header);
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    touch-action: manipulation;
    user-select: none;
}

.spin-btn:hover {
    background: var(--bg-card-hover);
    color: var(--accent-cyan);
}

.spin-btn:active {
    background: var(--accent-cyan-glow);
}

.spin-down {
    left: 1px;
    border-radius: var(--border-radius-sm) 0 0 var(--border-radius-sm);
}

.spin-up {
    right: 1px;
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

/* Switches & Toggles */
.toggle-group {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.45rem 0;
    gap: 0.75rem;
}

.toggle-label-desc {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.toggle-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    user-select: none;
}

.toggle-desc {
    font-size: 0.65rem;
    color: var(--text-muted);
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
    cursor: pointer;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #1e293b;
    border: 1.5px solid #475569;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.45);
    transition: background-color 0.25s cubic-bezier(0.4, 0, 0.2, 1), 
                border-color 0.25s cubic-bezier(0.4, 0, 0.2, 1), 
                box-shadow 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.slider::before,
.slider:before {
    content: "";
    position: absolute;
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 2.5px;
    border-radius: 50%;
    background-color: #94a3b8;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), 
                background-color 0.2s ease, 
                box-shadow 0.2s ease;
}

body.theme-cyber-neon .slider {
    background-color: rgba(15, 23, 42, 0.85);
    border-color: rgba(255, 255, 255, 0.22);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.5), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

body.theme-cyber-neon .slider:before,
body.theme-cyber-neon .slider::before {
    background-color: #94a3b8;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

body.theme-cyber-neon .switch:hover .slider {
    background-color: rgba(30, 41, 59, 0.95);
    border-color: rgba(255, 255, 255, 0.38);
}

body.theme-cyber-neon .switch:hover .slider:before,
body.theme-cyber-neon .switch:hover .slider::before {
    background-color: #e2e8f0;
    box-shadow: 0 0 6px rgba(255, 255, 255, 0.3);
}

body.theme-warm-studio .slider {
    background-color: rgba(203, 213, 225, 0.7);
    border-color: rgba(0, 0, 0, 0.15);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.12), inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}

body.theme-warm-studio .slider:before,
body.theme-warm-studio .slider::before {
    background-color: #ffffff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.18), 0 0 0 1px rgba(0, 0, 0, 0.04);
}

body.theme-warm-studio .switch:hover .slider {
    background-color: rgba(186, 198, 214, 0.85);
    border-color: rgba(0, 0, 0, 0.22);
}

body.theme-warm-studio .switch:hover .slider:before,
body.theme-warm-studio .switch:hover .slider::before {
    background-color: #ffffff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.22);
}

/* Checked (Active / ON) State */
input:checked + .slider {
    background-color: var(--accent-cyan) !important;
    border-color: var(--accent-cyan) !important;
    box-shadow: 0 0 12px var(--accent-cyan-glow), inset 0 1px 2px rgba(0, 0, 0, 0.2) !important;
}

input:checked + .slider:before,
input:checked + .slider::before {
    transform: translateX(18px);
    background-color: #ffffff !important;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
}

/* Round slider preset */
.slider.round {
    border-radius: 24px;
}

/* Focus visibility for accessibility */
.switch input:focus-visible + .slider {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 2px;
}

/* 16:9 Quick Recommended Presets */
.quick-preset-container {
    background: var(--bg-subtle);
    border: 1px dashed var(--bg-card-border);
    border-radius: var(--border-radius-sm);
    padding: 0.6rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.quick-preset-title {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--accent-cyan);
    letter-spacing: 0.04em;
}

.quick-preset-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.preset-chip {
    background: var(--bg-card-header);
    border: 1px solid var(--bg-card-border);
    color: var(--text-primary);
    padding: 0.25rem 0.55rem;
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    border-radius: var(--border-radius-xs);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.preset-chip:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

/* Sidebar Resolution Readout */
.sidebar-resolution-readout {
    background: var(--bg-subtle);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-sm);
    padding: 0.75rem;
    text-align: center;
    margin-top: 0.3rem;
}

.readout-title {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.readout-value {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--accent-cyan);
    margin: 0.15rem 0;
}

.readout-sub {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-muted);
}

/* Main Visual Card & Canvas */
.visual-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    backdrop-filter: var(--card-backdrop);
    border-radius: var(--border-radius-md);
    box-shadow: var(--card-shadow);
    padding: 1rem 1.15rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    height: auto;
    position: relative;
}

.visual-header {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    width: 100%;
}

.visual-header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    flex-wrap: wrap;
}

.visual-title-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.card-title-lg {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 800;
    letter-spacing: 0.02em;
    color: var(--text-primary);
}

.preview-mode-hint {
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-secondary);
}

/* Quick Steppers on Drawing View */
.visual-quick-steppers {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-sm);
    padding: 0.45rem 0.65rem;
    width: 100%;
    box-sizing: border-box;
}

.quick-stepper-item {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    flex: 1 1 0;
    min-width: 0;
}

.quick-stepper-label {
    font-family: var(--font-heading);
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--text-secondary);
    white-space: nowrap;
}

.quick-stepper-box {
    display: flex;
    align-items: center;
    background: var(--bg-card-header);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-xs);
    overflow: hidden;
    margin-left: auto;
}

.quick-stepper-btn {
    background: transparent;
    border: none;
    color: var(--text-primary);
    width: 32px;
    height: 30px;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    user-select: none;
    touch-action: manipulation;
}

.quick-stepper-btn:hover {
    background: var(--bg-card-hover);
    color: var(--accent-cyan);
}

.quick-stepper-btn:active {
    background: var(--accent-cyan);
    color: #020617;
}

.quick-stepper-val {
    min-width: 28px;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--accent-cyan);
    padding: 0 4px;
}

body.theme-warm-studio .quick-stepper-val {
    color: #0d9488;
}
body.theme-warm-studio .quick-stepper-btn:hover {
    color: #0d9488;
}
body.theme-warm-studio .quick-stepper-btn:active {
    background: #0d9488;
    color: #ffffff;
}

.visual-toolbar {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--bg-card-header);
    border: 1px solid var(--bg-card-border);
    padding: 3px 6px;
    border-radius: var(--border-radius-sm);
}

.toolbar-select-group {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.toolbar-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
}

.toolbar-select {
    padding: 0.3rem 0.55rem;
    font-size: var(--text-sm);
    font-family: var(--font-body);
    font-weight: 500;
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    color: var(--text-primary);
    border-radius: var(--border-radius-xs);
    width: auto;
    transition: var(--transition-smooth);
}

.toolbar-select:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    color: var(--text-muted);
}

.toolbar-select-group.is-disabled label {
    opacity: 0.4;
}

.toolbar-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 0.3rem 0.55rem;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--border-radius-xs);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    transition: var(--transition-smooth);
}

.toolbar-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--bg-card-border);
    color: var(--accent-cyan);
}

.toolbar-btn.active {
    background: var(--bg-card-border);
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
    box-shadow: 0 0 8px var(--accent-cyan-glow);
}

/* Enhanced Visual Capture Button (Icon Only) */
.toolbar-btn-capture {
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.5);
    color: var(--accent-cyan);
    padding: 0.35rem 0.55rem;
    min-width: 32px;
    height: 28px;
    border-radius: var(--border-radius-xs);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 1px 4px rgba(0, 240, 255, 0.15);
}

.toolbar-btn-capture .capture-icon {
    width: 17px;
    height: 17px;
    flex-shrink: 0;
    transition: transform 0.2s ease;
    stroke: var(--accent-cyan);
}

.toolbar-btn-capture:hover {
    background: rgba(0, 240, 255, 0.25);
    border-color: var(--accent-cyan);
    box-shadow: 0 0 12px var(--accent-cyan-glow);
    transform: translateY(-1px);
}

.toolbar-btn-capture:hover .capture-icon {
    transform: scale(1.15);
    stroke: #ffffff;
}

.toolbar-btn-capture:active {
    transform: translateY(0);
    box-shadow: 0 0 4px var(--accent-cyan-glow);
}

.toolbar-zoom-group {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-sm);
    padding: 2px 3px;
}

.toolbar-zoom-badge {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--accent-cyan);
    padding: 0 4px;
    min-width: 38px;
    text-align: center;
    user-select: none;
    line-height: 1;
}

.toolbar-separator {
    width: 1px;
    height: 16px;
    background: var(--bg-card-border);
    margin: 0 2px;
}

.aspect-ratio-badge {
    background: var(--bg-subtle);
    border: 1px solid var(--accent-cyan);
    color: var(--accent-cyan);
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: var(--text-sm);
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
}

.canvas-wrapper {
    position: relative;
    width: 100%;
    height: auto;
    min-height: 240px;
    max-height: 640px;
    aspect-ratio: var(--canvas-aspect-ratio, 16 / 9);
    background: var(--bg-canvas-wrapper);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    cursor: grab;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.05);
}

.canvas-wrapper.is-panning {
    cursor: grabbing;
}

/* Shutter Flash Effect on Capture */
.canvas-wrapper.capture-flash::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.65);
    pointer-events: none;
    z-index: 100;
    animation: shutter-flash 0.35s ease-out forwards;
}

@keyframes shutter-flash {
    0% { opacity: 0.9; }
    100% { opacity: 0; }
}

#preview-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* Interactive Canvas Tooltip */
.canvas-tooltip {
    position: absolute;
    pointer-events: none;
    background: var(--bg-modal);
    border: 1px solid var(--accent-cyan);
    border-radius: var(--border-radius-xs);
    padding: 0.55rem 0.75rem;
    font-size: var(--text-xs);
    color: var(--text-primary);
    box-shadow: var(--card-shadow);
    backdrop-filter: var(--card-backdrop);
    z-index: 50;
    transition: opacity 0.15s ease;
    transform: translate(12px, 12px);
    white-space: nowrap;
}

.canvas-tooltip .tooltip-title {
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: 0.25rem;
    border-bottom: 1px solid var(--bg-card-border);
    padding-bottom: 0.15rem;
}

.canvas-tooltip .tooltip-row {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.canvas-tooltip .tooltip-row span:last-child {
    color: var(--text-primary);
}

/* Canvas HUD */
.canvas-hud {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: var(--bg-card-header);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-xs);
    padding: 0.2rem 0.5rem;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-muted);
    pointer-events: none;
}

/* Canvas Legend */
.canvas-legend {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.color-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.panel-dot {
    background: var(--accent-cyan);
}

.flybar-dot {
    background: #94a3b8;
}

.guide-dot {
    background: var(--accent-rose);
    border: 1px dashed var(--text-primary);
}

.routing-dot {
    background: var(--accent-amber);
}

/* Accessories Section */
.accessories-card-subtle {
    background: var(--bg-subtle);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.accessories-main-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.toggle-group-inline {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.install-method-selector-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.install-method-selector-group select {
    padding: 0.3rem 0.6rem;
    font-size: 0.75rem;
    width: auto;
}

.disabled-panel {
    opacity: 0.4;
    pointer-events: none;
}

.accessories-weights-row {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.weight-input-compact {
    flex: 1;
    min-width: 120px;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.weight-input-compact input {
    padding: 0.35rem 0.5rem;
    font-size: 0.75rem;
}

/* Telemetry Column (Right) */
.telemetry-grid {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    backdrop-filter: var(--card-backdrop);
    border-radius: var(--border-radius-md);
    box-shadow: var(--card-shadow);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.metric-card:hover {
    border-color: var(--accent-cyan);
    background: var(--bg-card-hover);
}

/* Card Glows / Accent Borders */
.card-glow-indigo {
    border-top: 2px solid var(--accent-indigo);
}
.card-glow-cyan {
    border-top: 2px solid var(--accent-cyan);
}
.card-glow-purple {
    border-top: 2px solid var(--accent-purple);
}
.card-glow-emerald {
    border-top: 2px solid var(--accent-emerald);
}
.card-glow-amber {
    border-top: 2px solid var(--accent-amber);
}

.metric-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.metric-header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-action-btn {
    background: var(--bg-card-header);
    border: 1px solid var(--bg-card-border);
    color: var(--text-secondary);
    font-size: var(--text-2xs);
    font-family: var(--font-body);
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    border-radius: var(--border-radius-xs);
    cursor: pointer;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.card-action-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.metric-title {
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-primary);
}

.metric-icon {
    font-size: var(--text-md);
}

.metric-value-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.4rem;
    flex-wrap: nowrap;
    width: 100%;
}

.metric-value {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    white-space: nowrap;
    flex-shrink: 0;
}

.metric-value .unit {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-muted);
    margin-left: 0.15rem;
}

.metric-panels-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 2px 7px;
    background: rgba(6, 182, 212, 0.12);
    border: 1px solid rgba(6, 182, 212, 0.28);
    border-radius: 4px;
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--accent-cyan);
    font-family: var(--font-mono, monospace);
    letter-spacing: 0.01em;
    white-space: nowrap;
}

body.theme-cyber-neon .metric-panels-badge {
    background: rgba(56, 189, 248, 0.12);
    border-color: rgba(56, 189, 248, 0.30);
    color: #7dd3fc;
}

body.theme-cyber-neon .metric-panels-badge .badge-dot {
    background: #38bdf8;
}

body.theme-cyber-neon #val-port-panels-badge {
    background: rgba(251, 191, 36, 0.12);
    border-color: rgba(251, 191, 36, 0.30);
    color: #fde68a;
}

body.theme-cyber-neon .powercon-notice-badge {
    background: rgba(52, 211, 153, 0.12);
    border-color: rgba(52, 211, 153, 0.30);
    color: #6ee7b7;
}

body.theme-cyber-neon .detail-row.thermal-subtle-row {
    border-top-color: rgba(255, 255, 255, 0.08);
}

body.theme-warm-studio .metric-panels-badge {
    background: rgba(180, 83, 9, 0.10);
    border-color: rgba(180, 83, 9, 0.25);
    color: #92400e;
}

body.theme-warm-studio .metric-panels-badge .badge-dot {
    background: #b45309;
}

body.theme-warm-studio #val-port-panels-badge {
    background: rgba(217, 119, 6, 0.10);
    border-color: rgba(217, 119, 6, 0.25);
    color: #92400e;
}

body.theme-warm-studio .powercon-notice-badge {
    background: rgba(5, 150, 105, 0.10);
    border-color: rgba(5, 150, 105, 0.25);
    color: #047857;
}

body.theme-warm-studio .detail-row.thermal-subtle-row {
    border-top-color: rgba(0, 0, 0, 0.08);
}

.highlight-cyan {
    color: var(--accent-cyan) !important;
}

.highlight-emerald {
    color: var(--accent-emerald) !important;
}

.highlight-amber {
    color: var(--accent-amber) !important;
}

.metric-header-clickable {
    cursor: pointer;
    user-select: none;
    transition: opacity 0.2s ease;
}

.metric-header-clickable:hover {
    opacity: 0.9;
}

.metric-toggle-arrow {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--bg-card-border);
    color: var(--text-muted);
    font-size: 0.62rem;
    cursor: pointer;
    width: 20px;
    height: 20px;
    border-radius: var(--border-radius-sm);
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), color 0.2s, background 0.2s, border-color 0.2s;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 0.35rem;
}

.metric-header-clickable:hover .metric-toggle-arrow,
.metric-toggle-arrow:hover {
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.1);
}

.metric-header-clickable.open .metric-toggle-arrow,
.metric-toggle-arrow[aria-expanded="true"] {
    transform: rotate(180deg);
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.15);
}

.metric-details {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    border-top: 1px solid var(--bg-card-border);
    padding-top: 0.4rem;
}

.collapsible-details {
    overflow: hidden;
    transition: max-height 0.32s cubic-bezier(0.16, 1, 0.3, 1),
                opacity 0.25s ease,
                padding 0.25s ease,
                margin 0.25s ease,
                border-color 0.25s ease;
    max-height: 600px;
    opacity: 1;
}

.collapsible-details.collapsed {
    max-height: 0 !important;
    opacity: 0 !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    margin-top: 0 !important;
    border-top: 1px solid transparent !important;
    pointer-events: none;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.detail-row strong {
    font-family: var(--font-mono);
    color: var(--text-primary);
}

.danger-label {
    color: var(--accent-rose);
}

/* Linear Telemetry Bars */
.telemetry-bar-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    margin: 0.2rem 0;
}

.bar-label {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-xs);
    color: var(--text-muted);
}

.bar-track {
    width: 100%;
    height: 5px;
    background: var(--bg-card-header);
    border-radius: 4px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    border-radius: 4px;
    transition: width 0.3s ease;
}

.bar-fill-amber {
    background: linear-gradient(90deg, var(--accent-amber), var(--accent-rose));
}

/* Circular Gauge */
.telemetry-gauge-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0.2rem 0;
}

.circle-gauge {
    width: 38px;
    height: 38px;
    transform: rotate(-90deg);
}

.circle-bg {
    fill: none;
    stroke: var(--bg-card-header);
    stroke-width: 3.8;
}

.circle-fill {
    fill: none;
    stroke: var(--accent-emerald);
    stroke-width: 3.8;
    stroke-linecap: round;
    transition: stroke-dasharray 0.3s ease;
}

.gauge-percentage-label {
    display: flex;
    flex-direction: column;
    font-family: var(--font-mono);
}

.gauge-percentage-label .lbl-cap {
    font-size: var(--text-2xs);
    color: var(--text-muted);
}

.gauge-percentage-label span:last-child {
    font-size: var(--text-md);
    font-weight: 700;
    color: var(--accent-emerald);
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 1.5rem;
}

.modal-container {
    background: var(--bg-modal);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-lg);
    width: 100%;
    max-width: 760px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    animation: modalPop 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: default;
}

.modal-container-lg {
    max-width: 900px;
}

@keyframes modalPop {
    from {
        opacity: 0;
        transform: scale(0.96);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.4rem;
    border-bottom: 1px solid var(--bg-card-border);
}

.modal-header h3 {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.modal-close-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: var(--text-xl);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.modal-close-btn:hover {
    color: var(--accent-rose);
}

.modal-body {
    padding: 1.25rem 1.4rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: 70vh;
    overflow-y: auto;
}

.modal-desc {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.4rem;
    border-top: 1px solid var(--bg-card-border);
    background: var(--bg-card-header);
}

.btn-modal-cancel {
    background: var(--bg-card-header);
    border: 1px solid var(--bg-card-border);
    color: var(--text-secondary);
}

.btn-modal-save {
    background: var(--accent-cyan);
    color: var(--btn-primary-text);
    font-weight: 700;
}

.btn-add-preset {
    background: var(--bg-subtle);
    border: 1px dashed var(--accent-cyan);
    color: var(--accent-cyan);
    padding: 0.45rem;
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-smooth);
    width: 100%;
}

.btn-add-preset:hover {
    background: var(--bg-card-hover);
}

/* Tables in Modal */
.preset-table-scroll {
    overflow-x: auto;
}

.preset-edit-table, .bom-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}

.preset-edit-table th, .preset-edit-table td,
.bom-table th, .bom-table td {
    padding: 0.5rem 0.6rem;
    border: 1px solid var(--bg-card-border);
    text-align: left;
}

.preset-edit-table th, .bom-table th {
    background: var(--bg-card-header);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
}

.preset-edit-table input {
    padding: 0.25rem 0.4rem;
    font-size: var(--text-sm);
}

/* Compact BOM Spares Recommendation Area (Below Table in Notes) */
.bom-spares-recommendation {
    margin-top: 10px;
    padding: 8px 12px;
    background: var(--bg-subtle);
    border: 1px dashed var(--accent-cyan);
    border-radius: var(--border-radius-sm);
    font-size: var(--text-xs);
    transition: var(--transition-smooth);
}

.bom-spares-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 6px;
}

.bom-spares-main {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.bom-spares-badge {
    color: var(--accent-cyan);
    font-weight: 700;
    font-size: 0.76rem;
}

.bom-spares-text {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.78rem;
    font-variant-numeric: tabular-nums;
}

.bom-spares-note {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.btn-del-preset {
    background: rgba(244, 63, 94, 0.12);
    border: 1px solid var(--accent-rose);
    color: var(--accent-rose);
    border-radius: var(--border-radius-xs);
    padding: 0.2rem 0.4rem;
    cursor: pointer;
}

.bom-project-banner {
    background: var(--bg-subtle);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-sm);
    padding: 0.65rem 0.85rem;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    font-size: var(--text-sm);
}

.bom-project-banner strong {
    color: var(--accent-cyan);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 300;
    pointer-events: none;
}

.toast {
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid var(--accent-cyan);
    border-radius: var(--border-radius-sm);
    padding: 0.65rem 1rem;
    color: var(--text-primary);
    font-size: 0.78rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6), 0 0 10px rgba(6, 182, 212, 0.3);
    backdrop-filter: blur(12px);
    animation: toastSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1), toastFadeOut 0.3s 2.7s ease forwards;
    pointer-events: auto;
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes toastFadeOut {
    to {
        opacity: 0;
        transform: translateY(-10px);
    }
}

/* Helper hidden */
.hidden {
    display: none !important;
}

.print-only {
    display: none !important;
}



/* Responsive adjustments for mid-size desktop */
@media (max-width: 1280px) and (min-width: 1081px) {
    .dashboard-grid {
        grid-template-columns: 300px 1fr 300px;
        gap: 1rem;
        padding: 0 1rem;
    }
}

/* Single-Row Clean Web App Footer (Browser View) */
.app-footer {
    margin-top: auto;
    background: var(--bg-header);
    border-top: 1px solid var(--bg-card-border);
    backdrop-filter: var(--card-backdrop);
    padding: 0.55rem 1.5rem;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
    z-index: 10;
}

.footer-container {
    max-width: 1800px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.76rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.footer-copyright {
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.01em;
}

.footer-separator {
    color: var(--text-muted);
    font-size: 0.7rem;
    opacity: 0.7;
}

.footer-powered {
    color: var(--accent-cyan);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.footer-version-badge {
    display: inline-flex;
    align-items: center;
    padding: 1px 6px;
    background: rgba(6, 182, 212, 0.12);
    border: 1px solid rgba(6, 182, 212, 0.3);
    color: var(--accent-cyan);
    font-family: var(--font-mono, monospace);
    font-size: 0.65rem;
    font-weight: 700;
    border-radius: 4px;
    letter-spacing: 0.02em;
}

/* Right Section: Apps Matrix + Divider + Text Navigation */
.footer-right {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* CUEVANCE APPS Group */
.footer-apps-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-apps-label {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.footer-app-chips {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.footer-app-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.22rem 0.55rem;
    font-size: 0.72rem;
    font-weight: 600;
    border-radius: 4px;
    text-decoration: none;
    letter-spacing: 0.02em;
    user-select: none;
}

.footer-app-chip.active {
    background: rgba(6, 182, 212, 0.14);
    border: 1px solid var(--accent-cyan);
    color: var(--text-primary);
}

.footer-app-chip.future {
    background: transparent;
    border: 1px dashed var(--bg-card-border);
    color: var(--text-muted);
    font-size: 0.68rem;
    opacity: 0.85;
}

.chip-plus {
    font-weight: 700;
    opacity: 0.8;
}

.app-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-cyan);
}

/* Vertical Divider */
.footer-divider-vertical {
    width: 1px;
    height: 16px;
    background: var(--bg-card-border);
    opacity: 0.8;
}

/* Text Links Navigation */
.footer-text-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-text-link,
.footer-text-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    background: transparent;
    border: none;
    padding: 0.2rem 0.35rem;
    font-family: inherit;
    font-size: 0.74rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    cursor: pointer;
    border-radius: var(--border-radius-xs);
    transition: var(--transition-fast);
}

.footer-text-link:hover,
.footer-text-link-btn:hover {
    color: var(--accent-cyan);
    background: rgba(255, 255, 255, 0.05);
}

.link-icon {
    font-size: 0.82rem;
}

/* Theme specifics: Cyber Neon */
body.theme-cyber-neon .footer-powered {
    color: #38bdf8;
}

body.theme-cyber-neon .footer-version-badge {
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.30);
    color: #7dd3fc;
}

body.theme-cyber-neon .footer-app-chip.active {
    background: rgba(56, 189, 248, 0.15);
    border-color: #38bdf8;
    color: #f8fafc;
}

body.theme-cyber-neon .app-dot {
    background: #38bdf8;
    box-shadow: 0 0 6px rgba(56, 189, 248, 0.6);
}

body.theme-cyber-neon .footer-text-link:hover,
body.theme-cyber-neon .footer-text-link-btn:hover {
    color: #38bdf8;
    background: rgba(56, 189, 248, 0.08);
}

/* Theme specifics: Warm Studio */
body.theme-warm-studio .footer-powered {
    color: #0f766e;
}

body.theme-warm-studio .footer-version-badge {
    background: rgba(13, 148, 136, 0.12);
    border: 1px solid rgba(13, 148, 136, 0.35);
    color: #0f766e;
}

body.theme-warm-studio .footer-app-chip.active {
    background: rgba(13, 148, 136, 0.12);
    border-color: #0d9488;
    color: #0f172a;
}

body.theme-warm-studio .app-dot {
    background: #0d9488;
}

body.theme-warm-studio .footer-text-link:hover,
body.theme-warm-studio .footer-text-link-btn:hover {
    color: #0f766e;
    background: rgba(13, 148, 136, 0.08);
}



/* Electrical Safety Margin & Relaxation Control */
.safety-margin-container {
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-sm);
    padding: 0.6rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    transition: var(--transition-smooth);
}

.safety-margin-container.relaxed {
    border-color: rgba(245, 158, 11, 0.4);
    background: rgba(245, 158, 11, 0.05);
}

.safety-margin-container.danger {
    border-color: rgba(239, 68, 68, 0.45);
    background: rgba(239, 68, 68, 0.07);
}

.safety-margin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.76rem;
    font-weight: 600;
}

.safety-margin-label {
    color: var(--text-secondary);
}

.safety-margin-badge {
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 9999px;
    font-family: var(--font-mono);
    font-weight: 700;
    transition: var(--transition-smooth);
}

.badge-safe {
    background: rgba(16, 185, 129, 0.18);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.35);
}

.badge-caution {
    background: rgba(6, 182, 212, 0.18);
    color: #06b6d4;
    border: 1px solid rgba(6, 182, 212, 0.35);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.4);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.22);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.45);
}

.safety-slider-wrap {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.cyber-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.cyber-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-cyan);
    box-shadow: 0 0 8px var(--accent-cyan-glow);
    cursor: pointer;
    border: 2px solid #ffffff;
    transition: transform 0.15s ease, background 0.15s ease;
}

.cyber-range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.safety-slider-ticks {
    display: flex;
    justify-content: space-between;
    padding: 0 2px;
}

.safety-slider-ticks .tick {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.15s ease;
}

.safety-slider-ticks .tick.active {
    color: var(--accent-cyan);
    font-weight: 700;
}

.safety-margin-desc {
    font-size: 0.68rem;
    color: var(--text-muted);
    line-height: 1.35;
}

/* ==========================================================================
   NEXT-GEN UI/UX EVOLUTION STYLES (NameThatUI inspired)
   ========================================================================== */

/* 1. Workflow Steps Navigation */
.workflow-steps-nav {
    background: var(--bg-card);
    backdrop-filter: var(--card-backdrop);
    border-bottom: 1px solid var(--bg-card-border);
    padding: 0.5rem 1.5rem;
    position: sticky;
    top: 52px;
    z-index: 90;
    transition: var(--transition-smooth);
}

.steps-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.step-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.35rem 0.75rem;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-smooth);
    outline: none;
}

.step-item:hover {
    background: var(--bg-card-hover);
}

.title-desktop {
    display: inline;
}

.subtitle-desktop {
    display: inline;
}

.title-mobile,
.subtitle-mobile {
    display: none !important;
}

.step-num-desktop {
    display: inline;
}

.step-icon-mobile {
    display: none;
}

.hint-mobile {
    display: none;
}

.menu-lang-row {
    display: none;
}

.step-num,
.step-badge {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--bg-input);
    border: 1.5px solid var(--bg-card-border);
    color: var(--text-muted);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    flex-shrink: 0;
}

.step-text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.step-title {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

.step-subtitle {
    font-size: 0.65rem;
    color: var(--text-muted);
}

.step-item.active .step-num,
.step-item.active .step-badge {
    background: var(--accent-cyan);
    color: var(--accent-on-cyan, #020617);
    border-color: var(--accent-cyan);
    box-shadow: 0 0 10px var(--accent-cyan-glow);
}

.step-item.active .step-title {
    color: var(--text-primary);
    font-weight: 700;
}

.step-connector {
    width: 32px;
    height: 2px;
    background: var(--bg-card-border);
    border-radius: 1px;
}

/* 2. Adaptive Ambient Alert Glow System */
@keyframes alert-pulse-amber {
    0%, 100% {
        box-shadow: 0 0 12px rgba(245, 158, 11, 0.35), inset 0 0 8px rgba(245, 158, 11, 0.15);
        border-color: rgba(245, 158, 11, 0.6);
    }
    50% {
        box-shadow: 0 0 20px rgba(245, 158, 11, 0.6), inset 0 0 14px rgba(245, 158, 11, 0.25);
        border-color: rgba(245, 158, 11, 0.9);
    }
}

@keyframes alert-pulse-rose {
    0%, 100% {
        box-shadow: 0 0 12px rgba(244, 63, 94, 0.35), inset 0 0 8px rgba(244, 63, 94, 0.15);
        border-color: rgba(244, 63, 94, 0.6);
    }
    50% {
        box-shadow: 0 0 22px rgba(244, 63, 94, 0.7), inset 0 0 16px rgba(244, 63, 94, 0.3);
        border-color: rgba(244, 63, 94, 1.0);
    }
}

.metric-card.ambient-alert-warning {
    animation: alert-pulse-amber 2.2s infinite ease-in-out;
}

.metric-card.ambient-alert-danger {
    animation: alert-pulse-rose 1.8s infinite ease-in-out;
}

/* Micro-interactions: Buttons & Inputs Focus */
button:active {
    transform: scale(0.98);
}

.btn-primary:active {
    transform: scale(0.97);
}

/* Accessible Focus Ring (WCAG 2.1 Focus Visible) */
button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible,
.step-item:focus-visible,
.accordion-header:focus-visible,
.unit-btn:focus-visible,
.menu-action-item:focus-visible {
    outline: 2px solid var(--accent-cyan) !important;
    outline-offset: 2px !important;
    box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.35) !important;
}

/* Accessible Danger & Warning Alert Badges (Icon-only with Tooltip) */
.telemetry-alert-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    line-height: 1;
    width: 26px;
    height: 24px;
    padding: 0;
    border-radius: var(--border-radius-xs);
    margin-left: auto;
    cursor: help;
    transition: var(--transition-fast);
    user-select: none;
}

.telemetry-alert-badge:hover {
    transform: scale(1.1);
}

.telemetry-alert-badge.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: #fde68a;
    border: 1px solid #f59e0b;
}

.telemetry-alert-badge.badge-danger {
    background: rgba(239, 68, 68, 0.25);
    color: #fecaca;
    border: 1px solid #ef4444;
}

/* Canvas Drag-and-Drop Image Dropzone Effect */
.canvas-wrapper.canvas-drag-over {
    border-color: var(--accent-cyan) !important;
    box-shadow: inset 0 0 24px var(--accent-cyan-glow), 0 0 20px var(--accent-cyan-glow) !important;
    transform: scale(1.004);
    transition: var(--transition-smooth);
}

/* Preferences: Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .metric-card.ambient-alert-danger,
    .metric-card.ambient-alert-warning {
        animation: none !important;
        border-width: 2px !important;
    }
}

/* Keyboard Shortcut HUD Overlay Styles */
.shortcuts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 0.75rem;
    margin-top: 0.75rem;
}

.shortcut-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.85rem;
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-sm);
}

.shortcut-desc {
    font-size: 0.78rem;
    color: var(--text-primary);
    font-weight: 500;
}

.kbd-badge {
    background: var(--bg-card-header);
    border: 1px solid var(--bg-card-border);
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.4);
    border-radius: var(--border-radius-xs);
    padding: 0.2rem 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--accent-cyan);
}

/* Header Quick CTA Group */
.header-quick-actions {
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.btn-header-secondary {
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    color: var(--text-primary);
    padding: 0.45rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.78rem;
    font-weight: 600;
    font-family: var(--font-heading);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: var(--transition-smooth);
}

.btn-header-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

/* Sub-tabs in Accordion (Power vs Data) */
.sub-tab-container {
    display: flex;
    gap: 0.25rem;
    background: var(--bg-input);
    padding: 3px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--bg-card-border);
    margin-bottom: 0.75rem;
}

.sub-tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.4rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    font-family: var(--font-heading);
    border-radius: var(--border-radius-xs);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    transition: var(--transition-smooth);
}

.sub-tab-btn.active {
    background: var(--bg-card-header);
    color: var(--accent-cyan);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

/* ==========================================================================
   MOBILE LITE UI & ADAPTIVE VIEW (Max-Width: 1080px)
   ========================================================================== */
@media screen and (max-width: 1080px) {
    /* 0. Viewport & Body Protection (Prevent unwanted horizontal expansion) */
    html, body {
        width: 100% !important;
        max-width: 100vw !important;
        overflow-x: hidden !important;
        position: relative !important;
    }

    .main-content {
        width: 100% !important;
        max-width: 100vw !important;
        overflow-x: hidden !important;
        padding: 0 !important;
        margin: 0 !important;
    }

    /* 1. Header: 1-Row Slim Minimalist Layout */
    .app-header {
        position: sticky;
        top: 0;
        z-index: 100;
        padding: 0.35rem 0.65rem !important;
        height: 46px !important;
        width: 100% !important;
        max-width: 100vw !important;
        box-sizing: border-box !important;
    }

    .header-container {
        display: flex !important;
        align-items: center !important;
        justify-content: space-between !important;
        gap: 0.4rem !important;
        width: 100% !important;
        height: 100% !important;
        padding: 0 !important;
        margin: 0 !important;
        max-width: 100% !important;
    }

    .logo-area {
        display: flex !important;
        align-items: center !important;
        gap: 0.4rem !important;
        flex: 1 1 auto !important;
        min-width: 0 !important;
        overflow: hidden !important;
    }

    .cyber-logo-icon {
        width: 24px !important;
        height: 24px !important;
        flex-shrink: 0 !important;
        box-shadow: none !important;
    }

    .logo-text {
        min-width: 0 !important;
        flex: 1 1 auto !important;
        overflow: hidden !important;
    }

    .logo-text h1 {
        font-size: 0.82rem !important;
        font-weight: 700 !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        margin: 0 !important;
        line-height: 1.2 !important;
    }

    .logo-text .subtitle {
        display: none !important;
    }

    .header-actions {
        display: flex !important;
        align-items: center !important;
        gap: 0.35rem !important;
        flex-shrink: 0 !important;
    }

    /* Hide heavy desktop elements from mobile header */
    .header-actions > .lang-toggle-container,
    .header-actions > .header-quick-actions,
    .header-actions > .btn-print-action,
    .header-quick-actions,
    .btn-header-secondary {
        display: none !important;
    }

    .btn-menu-toggle {
        width: 34px !important;
        height: 34px !important;
        min-width: 34px !important;
        padding: 0 !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
    }

    .menu-popover {
        width: calc(100vw - 1.25rem) !important;
        max-width: 320px !important;
        top: calc(100% + 4px) !important;
        right: 0 !important;
    }

    .menu-lang-row {
        display: flex !important;
    }

    /* 2. Workflow Steps: Segmented Control Tabs (No Overlap) */
    .workflow-steps-nav {
        position: sticky;
        top: 46px;
        z-index: 90;
        padding: 0.25rem 0.4rem !important;
        background: var(--bg-card) !important;
        backdrop-filter: var(--card-backdrop) !important;
        border-bottom: 1px solid var(--bg-card-border) !important;
        width: 100% !important;
        max-width: 100vw !important;
        box-sizing: border-box !important;
    }

    .steps-container {
        display: flex !important;
        gap: 0.25rem !important;
        justify-content: space-between !important;
        width: 100% !important;
        max-width: 100% !important;
        background: rgba(0, 0, 0, 0.25);
        padding: 2px;
        border-radius: var(--border-radius-sm);
        border: 1px solid var(--bg-card-border);
    }

    .step-connector {
        display: none !important;
    }

    .step-item {
        flex: 1 1 0 !important;
        min-width: 0 !important;
        padding: 0.35rem 0.2rem !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        gap: 0.25rem !important;
        border-radius: calc(var(--border-radius-sm) - 2px) !important;
        background: transparent !important;
        border: 1px solid transparent !important;
        box-shadow: none !important;
        transition: var(--transition-smooth);
    }

    .step-num,
    .step-badge,
    body.theme-cyber-neon .step-num,
    body.theme-warm-studio .step-num,
    body.theme-cyber-neon .step-badge,
    body.theme-warm-studio .step-badge {
        width: 16px !important;
        height: 16px !important;
        min-width: 16px !important;
        min-height: 16px !important;
        border-radius: 4px !important;
        background: rgba(255, 255, 255, 0.12) !important;
        border: 1px solid rgba(255, 255, 255, 0.2) !important;
        font-family: var(--font-mono) !important;
        font-size: 0.65rem !important;
        font-weight: 700 !important;
        color: var(--text-secondary) !important;
        display: inline-flex !important;
        align-items: center !important;
        justify-content: center !important;
        padding: 0 !important;
        margin: 0 !important;
        box-shadow: none !important;
        flex-shrink: 0 !important;
    }

    .step-text {
        min-width: 0 !important;
        display: flex !important;
        flex-direction: column !important;
        text-align: left !important;
    }

    .step-title {
        font-size: 0.70rem !important;
        font-weight: 600 !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
    }

    .title-desktop,
    .subtitle-desktop,
    .subtitle-mobile,
    .step-subtitle {
        display: none !important;
    }

    .title-mobile {
        display: inline !important;
    }

    /* Active Step Styling */
    body.theme-cyber-neon .step-item.active {
        background: var(--accent-cyan) !important;
        border-color: var(--accent-cyan) !important;
        box-shadow: 0 0 8px var(--accent-cyan-glow) !important;
    }
    body.theme-cyber-neon .step-item.active .step-title {
        color: #020617 !important;
        font-weight: 700 !important;
    }
    body.theme-cyber-neon .step-item.active .step-badge,
    body.theme-cyber-neon .step-item.active .step-num {
        background: rgba(2, 6, 23, 0.2) !important;
        color: #020617 !important;
        border-color: rgba(2, 6, 23, 0.4) !important;
    }

    body.theme-warm-studio .step-item.active {
        background: #0d9488 !important;
        border-color: #0d9488 !important;
        box-shadow: 0 2px 6px rgba(13, 148, 136, 0.3) !important;
    }
    body.theme-warm-studio .step-item.active .step-title {
        color: #ffffff !important;
        font-weight: 700 !important;
    }
    body.theme-warm-studio .step-item.active .step-badge,
    body.theme-warm-studio .step-item.active .step-num {
        background: rgba(255, 255, 255, 0.25) !important;
        color: #ffffff !important;
        border-color: rgba(255, 255, 255, 0.4) !important;
    }

    /* 3. Dashboard Grid & Full-Width 100% Cards */
    .dashboard-grid {
        display: block !important;
        width: 100% !important;
        max-width: 100vw !important;
        padding: 0.5rem 0.4rem !important;
        margin: 0 !important;
        box-sizing: border-box !important;
        overflow-x: hidden !important;
        flex: none !important;
    }

    .dashboard-col {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
        margin: 0 !important;
        padding: 0 !important;
        gap: 0.55rem !important;
        box-sizing: border-box !important;
        overflow-x: hidden !important;
    }

    /* Tab Filtering Control */
    .dashboard-grid[data-active-tab="controls"] .controls-col {
        display: flex !important;
    }
    .dashboard-grid[data-active-tab="controls"] .main-col,
    .dashboard-grid[data-active-tab="controls"] .telemetry-col {
        display: none !important;
    }

    .dashboard-grid[data-active-tab="visual"] .main-col {
        display: flex !important;
    }
    .dashboard-grid[data-active-tab="visual"] .controls-col,
    .dashboard-grid[data-active-tab="visual"] .telemetry-col {
        display: none !important;
    }

    .dashboard-grid[data-active-tab="telemetry"] .telemetry-col {
        display: flex !important;
    }
    .dashboard-grid[data-active-tab="telemetry"] .controls-col,
    .dashboard-grid[data-active-tab="telemetry"] .main-col {
        display: none !important;
    }

    /* Default Fallback */
    .dashboard-grid:not([data-active-tab]) .controls-col {
        display: flex !important;
    }
    .dashboard-grid:not([data-active-tab]) .main-col,
    .dashboard-grid:not([data-active-tab]) .telemetry-col {
        display: none !important;
    }

    /* Edge-to-Edge Cards */
    .accordion-item,
    .visual-card,
    .metric-card,
    .telemetry-group {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        overflow-x: hidden !important;
    }

    .accordion-header {
        width: 100% !important;
        box-sizing: border-box !important;
        padding: 0.6rem 0.75rem !important;
        min-height: 44px !important;
        font-size: 0.82rem !important;
    }

    .accordion-content {
        width: 100% !important;
        box-sizing: border-box !important;
        padding: 0.65rem !important;
        overflow-x: hidden !important;
    }

    /* 4. Canvas Preview Card (Tab 2) */
    .visual-card {
        padding: 0.55rem !important;
        border-radius: var(--border-radius-md) !important;
    }

    .visual-header {
        margin-bottom: 0.4rem !important;
    }

    .visual-title-wrapper h2 {
        font-size: 0.88rem !important;
    }

    .visual-quick-steppers {
        padding: 0.35rem 0.5rem !important;
        gap: 0.4rem !important;
    }

    .quick-stepper-label {
        font-size: 0.70rem !important;
    }

    .quick-stepper-btn {
        width: 28px !important;
        height: 28px !important;
        font-size: 0.88rem !important;
    }

    .quick-stepper-val {
        font-size: 0.80rem !important;
        min-width: 24px !important;
    }

    .preview-mode-hint.hint-desktop {
        display: none !important;
    }

    .preview-mode-hint.hint-mobile {
        display: inline-block !important;
        font-size: 0.68rem;
        color: var(--text-muted);
    }

    .canvas-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
        height: auto !important;
        min-height: 240px !important;
        max-height: 320px !important;
        aspect-ratio: auto !important;
        box-sizing: border-box !important;
    }

    .canvas-wrapper canvas {
        width: 100% !important;
        height: 100% !important;
        object-fit: contain !important;
    }

    .visual-toolbar {
        display: flex !important;
        flex-wrap: wrap !important;
        gap: 0.35rem !important;
        margin-top: 0.4rem !important;
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
    }

    .toolbar-select-group {
        flex: 1 1 auto !important;
        min-width: 0 !important;
    }

    .toolbar-select {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
        padding: 0.35rem 0.4rem !important;
        font-size: 0.74rem !important;
    }

    .toolbar-btn {
        padding: 0.35rem 0.55rem !important;
        font-size: 0.74rem !important;
        flex-shrink: 0 !important;
    }

    /* 5. Mobile Forms & iOS Zoom Prevention */
    input[type="text"],
    input[type="number"],
    select,
    textarea {
        font-size: 16px !important; /* Prevents auto-zoom in iOS Safari */
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    .form-group {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
        box-sizing: border-box !important;
    }

    .form-group label {
        font-size: 0.74rem !important;
    }

    .grid-2-col {
        display: grid !important;
        grid-template-columns: 1fr 1fr !important;
        gap: 0.45rem !important;
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
    }

    .tab-container,
    .sub-tab-container {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
        box-sizing: border-box !important;
    }

    .tab-btn,
    .sub-tab-btn {
        font-size: 0.74rem !important;
        padding: 0.35rem 0.25rem !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
    }

    .spinner-container {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
    }

    .spinner-container input {
        width: 100% !important;
        min-width: 0 !important;
    }

    /* 6. Telemetry Cards */
    .metric-card {
        padding: 0.65rem 0.75rem !important;
        border-radius: var(--border-radius-sm) !important;
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
        box-sizing: border-box !important;
    }

    .metric-value {
        font-size: 1.2rem !important;
    }

    .mobile-hide,
    .telemetry-formula-hint,
    .print-disclaimer-note {
        display: none !important;
    }

    /* 7. Ultra-Minimal Footer */
    .app-footer {
        padding: 0.45rem 0.65rem !important;
        margin-top: auto;
        width: 100% !important;
        max-width: 100vw !important;
        box-sizing: border-box !important;
    }

    .footer-container {
        flex-direction: column !important;
        align-items: center !important;
        gap: 0.35rem !important;
        text-align: center !important;
        width: 100% !important;
        max-width: 100% !important;
    }

    .footer-left {
        font-size: 0.70rem !important;
        justify-content: center !important;
    }

    .footer-apps-group,
    .footer-divider-vertical {
        display: none !important; /* Hide secondary matrix on mobile */
    }

    .footer-text-links {
        justify-content: center !important;
        flex-wrap: wrap !important;
        gap: 0.35rem !important;
        font-size: 0.72rem !important;
    }
}

/* ==========================================================================
   DESKTOP PRESERVATION RULE (Min-Width: 1081px) - Dedicated 3-Column Desktop Grid
   ========================================================================== */
@media screen and (min-width: 1081px) {
    .dashboard-grid {
        max-width: 1800px;
        margin: 1.25rem auto;
        padding: 0 1.75rem;
        display: grid !important;
        grid-template-columns: minmax(280px, 340px) 1fr minmax(280px, 340px) !important;
        gap: 1.25rem !important;
        flex: 1;
    }

    .dashboard-col {
        display: flex !important;
        flex-direction: column !important;
        gap: 1.25rem !important;
    }


    .dashboard-grid .controls-col,
    .dashboard-grid .main-col,
    .dashboard-grid .telemetry-col {
        display: flex !important;
    }
}

/* ==========================================================================
   PRINT SPECIFICATION SHEET (A4 PORTRAIT SPEC SHEET - ULTRA ROBUST DEFENSE)
   Placed strictly at the VERY END of styles.css to ensure ultimate cascade dominance.
   ========================================================================== */
@media print {
    @page {
        size: A4 portrait !important;
        margin: 6mm 8mm 6mm 8mm !important;
    }

    *, *:before, *:after {
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }

    :root,
    html,
    body,
    body.theme-cyber-neon,
    body.theme-warm-studio,
    body.theme-liquid-glass {
        --bg-dark: #ffffff !important;
        --bg-page-gradient: none !important;
        --bg-header: #ffffff !important;
        --bg-card: #ffffff !important;
        --bg-card-header: #f8fafc !important;
        --bg-card-border: #cbd5e1 !important;
        --bg-card-hover: #f8fafc !important;
        --bg-input: #ffffff !important;
        --bg-subtle: #f8fafc !important;
        
        --text-primary: #0f172a !important;
        --text-secondary: #1e293b !important;
        --text-muted: #475569 !important;
        
        /* Studio Theme Palette */
        --accent-cyan: #0d9488 !important; /* Deep Studio Teal */
        --accent-cyan-glow: transparent !important;
        --accent-on-cyan: #ffffff !important;
        --accent-purple: #b45309 !important;
        --accent-emerald: #10b981 !important;
        --accent-on-emerald: #ffffff !important;
        --accent-amber: #d97706 !important;
        --accent-rose: #e11d48 !important;

        background: #ffffff !important;
        background-color: #ffffff !important;
        color: #0f172a !important;
        font-size: 7pt !important;
        line-height: 1.18 !important;
    }

    body:not(.manual-page) {
        width: 100% !important;
        height: auto !important;
        max-height: 285mm !important;
        overflow: hidden !important;
    }

    .no-print,
    .no-print * {
        display: none !important;
    }

    .print-only {
        display: block !important;
    }

    /* Primary Layout: Full width stack */
    .dashboard-grid,
    .dashboard-grid[data-active-tab],
    .dashboard-grid[data-active-tab="controls"],
    .dashboard-grid[data-active-tab="visual"],
    .dashboard-grid[data-active-tab="telemetry"] {
        display: flex !important;
        flex-direction: column !important;
        margin: 0 !important;
        padding: 0 !important;
        gap: 2mm !important;
        page-break-inside: avoid !important;
        break-inside: avoid !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    /* Left controls column is completely hidden in print */
    .dashboard-grid .controls-col,
    .dashboard-grid[data-active-tab] .controls-col,
    .dashboard-grid[data-active-tab="controls"] .controls-col,
    .dashboard-grid[data-active-tab="visual"] .controls-col,
    .dashboard-grid[data-active-tab="telemetry"] .controls-col {
        display: none !important;
        visibility: hidden !important;
    }

    /* Preview & Telemetry columns MUST always be visible regardless of active tab */
    .dashboard-grid .main-col,
    .dashboard-grid .telemetry-col,
    .dashboard-grid[data-active-tab] .main-col,
    .dashboard-grid[data-active-tab] .telemetry-col,
    .dashboard-grid[data-active-tab="controls"] .main-col,
    .dashboard-grid[data-active-tab="controls"] .telemetry-col,
    .dashboard-grid[data-active-tab="visual"] .main-col,
    .dashboard-grid[data-active-tab="visual"] .telemetry-col,
    .dashboard-grid[data-active-tab="telemetry"] .main-col,
    .dashboard-grid[data-active-tab="telemetry"] .telemetry-col {
        display: flex !important;
        flex-direction: column !important;
        visibility: visible !important;
        opacity: 1 !important;
        padding: 0 !important;
        margin: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    /* Print Header & Specs Summary Table */
    .print-only-summary {
        page-break-inside: avoid !important;
        break-inside: avoid !important;
        margin-bottom: 1mm !important;
    }

    .print-header-top {
        display: flex !important;
        justify-content: space-between !important;
        align-items: flex-end !important;
        border-bottom: 2px solid #0d9488 !important;
        padding-bottom: 1.2mm !important;
        margin-bottom: 1.5mm !important;
    }

    .print-header-top h2 {
        font-size: 10pt !important;
        font-weight: 800 !important;
        color: #0f172a !important;
        margin: 0 !important;
        letter-spacing: -0.01em;
    }

    .print-date {
        font-size: 6.8pt !important;
        color: #475569 !important;
        margin: 0 !important;
    }

    .print-table {
        width: 100% !important;
        border-collapse: collapse !important;
        margin-bottom: 1mm !important;
        font-size: 6.5pt !important;
        page-break-inside: avoid !important;
        break-inside: avoid !important;
    }

    .print-table th, .print-table td {
        border: 1px solid #cbd5e1 !important;
        padding: 1.6mm 3mm !important;
        text-align: left !important;
        line-height: 1.15 !important;
    }

    .print-table-2col th {
        background: #f0fdfa !important;
        color: #0f766e !important;
        border-color: #99f6e4 !important;
        font-weight: 700 !important;
        width: 15% !important;
    }

    .print-table-2col td {
        width: 35% !important;
        color: #0f172a !important;
        font-weight: 600 !important;
    }

    .print-disclaimer-note {
        margin-top: 0.8mm !important;
        font-size: 5.4pt !important;
        color: #64748b !important;
        border-top: 1px dashed #cbd5e1 !important;
        padding-top: 0.8mm !important;
    }

    /* Layout Preview Section */
    .visual-card {
        background: #ffffff !important;
        border: 1px solid #cbd5e1 !important;
        border-radius: 4px !important;
        padding: 2.2mm 3.5mm !important;
        box-shadow: none !important;
        page-break-inside: avoid !important;
        break-inside: avoid !important;
        margin: 0 !important;
        gap: 1mm !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    .visual-header {
        margin-bottom: 1mm !important;
        display: flex !important;
        justify-content: space-between !important;
        align-items: center !important;
    }

    .card-title-lg {
        font-size: 7.8pt !important;
        font-weight: 800 !important;
        color: #0f172a !important;
        margin: 0 !important;
    }

    .aspect-ratio-badge {
        background: #0d9488 !important;
        color: #ffffff !important;
        border: 1px solid #0d9488 !important;
        font-size: 6.5pt !important;
        font-weight: 800 !important;
        padding: 1px 4.5px !important;
        border-radius: 3px !important;
        box-shadow: none !important;
    }

    .canvas-wrapper {
        background: #ffffff !important;
        border: 1px solid #94a3b8 !important;
        width: 100% !important;
        max-width: 100% !important;
        margin: 0 auto !important;
        height: auto !important;
        max-height: 64mm !important;
        min-height: auto !important;
        aspect-ratio: auto !important;
        overflow: hidden !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        page-break-inside: avoid !important;
        break-inside: avoid !important;
        padding: 0 !important;
    }

    #preview-canvas {
        max-height: 64mm !important;
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        object-fit: contain !important;
        display: block !important;
        margin: 0 auto !important;
    }

    .canvas-legend {
        color: #334155 !important;
        font-size: 6pt !important;
        margin-top: 1mm !important;
        gap: 8px !important;
        display: flex !important;
        justify-content: center !important;
    }

    .panel-dot { background: #0d9488 !important; width: 6px !important; height: 6px !important; }
    .flybar-dot { background: #475569 !important; width: 6px !important; height: 6px !important; }
    .guide-dot { background: #e11d48 !important; width: 6px !important; height: 6px !important; }
    .routing-dot { background: #d97706 !important; width: 6px !important; height: 6px !important; }

    /* Compact & Balanced Telemetry Grid */
    .telemetry-col {
        margin: 0 !important;
        padding: 0 !important;
    }

    .telemetry-grid {
        display: grid !important;
        grid-template-columns: repeat(6, 1fr) !important;
        gap: 2mm !important;
        margin-top: 0.5mm !important;
        page-break-inside: avoid !important;
        break-inside: avoid !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    /* Top Row: 3 metric cards (Dimensions, Resolution, Weight) - Span 2 each */
    .telemetry-grid > .metric-card:nth-child(1) { grid-column: span 2 !important; }
    .telemetry-grid > .metric-card:nth-child(2) { grid-column: span 2 !important; }
    .telemetry-grid > .metric-card:nth-child(3) { grid-column: span 2 !important; }

    /* Bottom Row: 2 metric cards (Power & Thermal, Transmission & Ports) - Span 3 each */
    .telemetry-grid > .metric-card:nth-child(4) { grid-column: span 3 !important; }
    .telemetry-grid > .metric-card:nth-child(5) { grid-column: span 3 !important; }

    .metric-card {
        background: #ffffff !important;
        border: 1px solid #cbd5e1 !important;
        border-radius: 4px !important;
        padding: 2.2mm 3mm !important;
        box-shadow: none !important;
        backdrop-filter: none !important;
        display: flex !important;
        flex-direction: column !important;
        gap: 1mm !important;
        page-break-inside: avoid !important;
        break-inside: avoid !important;
        box-sizing: border-box !important;
    }

    /* Studio Accent Borders for Metric Cards */
    .card-glow-indigo { border-top: 2.2px solid #0f766e !important; }
    .card-glow-cyan { border-top: 2.2px solid #0d9488 !important; }
    .card-glow-purple { border-top: 2.2px solid #b45309 !important; }
    .card-glow-emerald { border-top: 2.2px solid #10b981 !important; }
    .card-glow-amber { border-top: 2.2px solid #d97706 !important; }

    .metric-header {
        display: flex !important;
        justify-content: space-between !important;
        align-items: center !important;
        margin-bottom: 0.3mm !important;
    }

    .metric-title {
        font-size: 6.5pt !important;
        font-weight: 800 !important;
        color: #0f172a !important;
        letter-spacing: 0.01em !important;
    }

    .metric-icon {
        font-size: 7pt !important;
    }

    .metric-value-row {
        display: flex !important;
        align-items: baseline !important;
        justify-content: space-between !important;
        margin: 0 !important;
    }

    .metric-value {
        font-size: 9.5pt !important;
        font-weight: 800 !important;
        color: #0f172a !important;
        line-height: 1.15 !important;
        margin: 0 !important;
    }

    .metric-value .unit {
        font-size: 6.2pt !important;
        font-weight: 600 !important;
        color: #64748b !important;
    }

    .metric-panels-badge {
        display: inline-flex !important;
        border: 1px solid #99f6e4 !important;
        background: #f0fdfa !important;
        color: #0f766e !important;
        font-size: 5.8pt !important;
        font-weight: 700 !important;
        padding: 0 3px !important;
        border-radius: 3px !important;
    }

    .metric-panels-badge .badge-dot {
        display: none !important;
    }

    .metric-details,
    .collapsible-details,
    .collapsible-details.collapsed {
        display: flex !important;
        flex-direction: column !important;
        max-height: none !important;
        opacity: 1 !important;
        visibility: visible !important;
        pointer-events: auto !important;
        gap: 0.8mm !important;
        border-top: 1px solid #e2e8f0 !important;
        padding-top: 1.2mm !important;
        margin-top: 0.3mm !important;
    }

    .detail-row {
        display: flex !important;
        justify-content: space-between !important;
        font-size: 6pt !important;
        line-height: 1.15 !important;
        color: #475569 !important;
    }

    .detail-row strong {
        color: #0f172a !important;
        font-weight: 700 !important;
        font-size: 6.2pt !important;
    }

    .highlight-cyan {
        color: #0d9488 !important;
        font-weight: 700 !important;
    }

    .highlight-emerald {
        color: #10b981 !important;
        font-weight: 700 !important;
    }

    .highlight-amber {
        color: #b45309 !important;
        font-weight: 700 !important;
    }

    .danger-label {
        color: #e11d48 !important;
        font-weight: 700 !important;
    }

    /* Alert Badges for Print (Icon-only compact badge) */
    .telemetry-alert-badge {
        display: inline-flex !important;
        align-items: center !important;
        justify-content: center !important;
        font-size: 6.5pt !important;
        line-height: 1 !important;
        width: 13px !important;
        height: 13px !important;
        padding: 0 !important;
        border-radius: 2px !important;
        margin-left: auto !important;
    }

    .telemetry-alert-badge.badge-warning {
        background: rgba(245, 158, 11, 0.15) !important;
        color: #92400e !important;
        border: 1px solid #f59e0b !important;
    }

    .telemetry-alert-badge.badge-danger {
        background: rgba(239, 68, 68, 0.15) !important;
        color: #991b1b !important;
        border: 1px solid #ef4444 !important;
    }

    /* High-Precision Spec Sheet Footer */
    .print-only-footer {
        display: block !important;
        page-break-inside: avoid !important;
        break-inside: avoid !important;
        margin-top: 1.2mm !important;
        padding-top: 1.2mm !important;
        border-top: 1.5px solid #0d9488 !important;
        width: 100% !important;
    }

    .print-footer-container {
        display: flex !important;
        justify-content: space-between !important;
        align-items: center !important;
        font-size: 6pt !important;
        color: #475569 !important;
        line-height: 1.15 !important;
    }

    .print-footer-left {
        font-weight: 700 !important;
        color: #0f172a !important;
    }

    .print-footer-center {
        font-style: italic !important;
        color: #64748b !important;
    }

    .print-footer-right {
        font-weight: 800 !important;
        color: #0d9488 !important;
        letter-spacing: 0.02em !important;
    }
}