/* ==========================================================================
   ETERNAL VOID - CUSTOM STYLING SYSTEM
   ========================================================================== */

/* Design Tokens & CSS Variables */
:root {
    /* Color Palette - Cyber Cosmic Theme */
    --bg-main: #000000;
    --bg-panel: rgba(8, 8, 12, 0.75);
    --border-glass: rgba(255, 255, 255, 0.06);
    --border-glass-active: rgba(255, 255, 255, 0.15);
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-accent: #818cf8;
    
    --color-danger: #ef4444;
    --color-success: #10b981;
    --color-warning: #f59e0b;

    /* Base Accent HSL for Dynamic Lighting */
    --accent-h: 238;
    --accent-s: 83%;
    --accent-l: 66%;
    --accent-color: hsl(var(--accent-h), var(--accent-s), var(--accent-l));
    --accent-glow: hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.25);
    
    /* Layout & Dimensions */
    --panel-width: 380px;
    --font-display: 'Space Grotesk', system-ui, -apple-system, sans-serif;
    --font-body: 'Outfit', system-ui, -apple-system, sans-serif;
    --font-mono: 'Fira Code', monospace;
    
    --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-snappy: all 0.15s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow-depth: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 15px hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.15);
}

/* Reset & Base Elements */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.5;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    user-select: none;
    -webkit-user-select: none;
}

/* Scrollbar customization */
::-webkit-scrollbar {
    width: 5px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* Fullscreen Canvas */
#canvas {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    background: transparent;
}

/* Background Ambient Glow */
.ambient-glow {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70vw;
    height: 70vh;
    background: radial-gradient(circle, hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.05) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
    transition: background 1.5s ease;
}

/* Glassmorphism General Style */
.glass-effect {
    background: var(--bg-panel);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
}

/* HUD Container (Top-Left) */
.hud-container {
    position: fixed;
    top: 24px;
    left: 24px;
    z-index: 10;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: rgba(8, 8, 12, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 16px 20px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    transition: var(--transition-smooth);
}

.logo-area {
    display: flex;
    flex-direction: column;
}

.logo-title-row, .splash-title-row { display: flex; align-items: center; justify-content: center; gap: 8px; }
.logo-title-row { justify-content: flex-start; }
.beta-badge {
    display: inline-flex; align-items: center; height: 16px; padding: 0 6px;
    border: 1px solid rgba(129, 140, 248, 0.45); border-radius: 999px;
    color: #c4b5fd; background: rgba(99, 102, 241, 0.12);
    font: 700 7px/1 var(--font-mono); letter-spacing: 1px; -webkit-text-fill-color: initial;
}
.beta-badge-splash { height: 19px; padding: 0 8px; font-size: 8px; }

.breathing-guide {
    --breath-level: 0; position: fixed; left: 50%; top: 50%; z-index: 8;
    display: flex; flex-direction: column; align-items: center; gap: 8px;
    opacity: 0; pointer-events: none; transform: translate(-50%, -50%);
    transition: opacity 0.8s ease;
}
body.meditation-mode.show-breathing-guide .breathing-guide { opacity: 0.86; }
.breathing-orbit {
    width: calc(74px + var(--breath-level) * 54px); height: calc(74px + var(--breath-level) * 54px);
    display: grid; place-items: center; border: 1px solid rgba(196, 181, 253, 0.42);
    border-radius: 50%; background: radial-gradient(circle, rgba(103,232,249,.13), rgba(129,140,248,.04) 55%, transparent 72%);
    box-shadow: 0 0 calc(20px + var(--breath-level) * 30px) rgba(129,140,248,.2);
    transition: width .12s linear, height .12s linear, box-shadow .12s linear;
}
.breathing-core { width: 12px; height: 12px; border-radius: 50%; background: #e0e7ff; box-shadow: 0 0 22px rgba(196,181,253,.95); }
.breathing-phase { color: #e0e7ff; font: 600 10px/1 var(--font-display); letter-spacing: 2.4px; }
.breathing-countdown { color: rgba(196,181,253,.8); font: 500 10px/1 var(--font-mono); }

.experience-mode-control { margin-top: 12px; }
.experience-mode-segments {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; padding: 4px; margin: 8px 0;
    border: 1px solid rgba(255,255,255,.07); border-radius: 12px; background: rgba(2,6,23,.4);
}
.experience-mode-btn {
    border: 0; border-radius: 8px; padding: 8px 5px; color: var(--text-muted); background: transparent;
    font: 600 10px/1 var(--font-display); letter-spacing: .6px; cursor: pointer; transition: var(--transition-snappy);
}
.experience-mode-btn:hover { color: var(--text-primary); }
.experience-mode-btn.active { color: #eef2ff; background: linear-gradient(135deg, rgba(99,102,241,.55), rgba(168,85,247,.35)); box-shadow: 0 0 18px rgba(129,140,248,.16); }
.meditation-controls { margin-top: 12px; padding-top: 12px; border-top: 1px solid rgba(255,255,255,.07); }
.meditation-controls.hidden { display: none !important; }
.meditation-preset-badge {
    margin-left: auto;
    padding: 2px 6px;
    border: 1px solid rgba(196, 181, 253, 0.28);
    border-radius: 999px;
    color: #c4b5fd;
    background: rgba(124, 58, 237, 0.14);
    font: 600 8px/1 var(--font-mono);
    letter-spacing: 0.12em;
}
.meditation-rhythm-label { display: block; margin-bottom: 6px; color: var(--text-secondary); font-size: 10px; }
.meditation-guide-row { margin-top: 10px; }
@media (prefers-reduced-motion: reduce) { .breathing-orbit { transition: none; } }

.logo-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 20px;
    letter-spacing: -0.5px;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.logo-subtitle {
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin-top: 1px;
}

.hud-diagnostics {
    display: flex;
    gap: 16px;
    border-top: 1px solid var(--border-glass);
    padding-top: 10px;
    margin-top: 4px;
}

.diagnostic-item {
    display: flex;
    flex-direction: column;
}

.diag-label {
    font-size: 9px;
    color: var(--text-muted);
    letter-spacing: 0.5px;
    font-weight: 600;
}

.diag-value {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}

/* Audio Visualizer within HUD */
.hud-equalizer {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    height: 22px;
    margin-top: 6px;
    width: 100%;
    padding: 0 2px;
    border-radius: 4px;
    background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(0,0,0,0.25));
    overflow: hidden;
}

.eq-bar {
    flex: 1;
    min-height: 3px;
    border-radius: 2px 2px 0 0;
    background: linear-gradient(180deg, var(--accent-color), rgba(255,255,255,0.15));
    box-shadow: 0 0 6px var(--accent-glow, var(--accent-color));
    opacity: 0.85;
    transition: height 0.09s ease, opacity 0.2s ease;
}

.eq-bar:nth-child(odd) {
    background: linear-gradient(180deg, var(--text-accent, #8b9bff), rgba(255,255,255,0.1));
}

/* Floating Controls (Top-Right) */
.floating-controls {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 45;
    display: flex;
    gap: 10px;
    background: rgba(8, 8, 12, 0.4);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: 30px;
    padding: 6px 10px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    transition: right 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Floating Actions shift when control panel opens */
.floating-controls.panel-open {
    right: calc(var(--panel-width) + 24px);
}

/* Glassmorphic 3D Style Pill Selector */
.style-selector-pill {
    display: flex;
    align-items: center;
    background: rgba(12, 12, 18, 0.45);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 30px;
    padding: 3px;
    gap: 2px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    opacity: 1;
    transform: scale(1);
}

.style-selector-pill.hide {
    display: none;
    opacity: 0;
    transform: scale(0.9) translateX(10px);
    pointer-events: none;
}

.style-pill-btn {
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-muted);
    font-family: var(--font-primary);
    font-size: 8px;
    font-weight: 700;
    letter-spacing: 0.8px;
    padding: 5px 10px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    outline: none;
}

.style-pill-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
}

.style-pill-btn.active {
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.2); /* Sleek translucent Indigo */
    border: 1px solid rgba(99, 102, 241, 0.35);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.15);
}

/* Icon Buttons styling */
.icon-btn {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-snappy);
    position: relative;
    outline: none;
}

.icon-btn svg {
    width: 16px;
    height: 16px;
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.09);
    border-color: var(--border-glass-active);
    color: var(--text-primary);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.05);
}

.icon-btn:active {
    transform: scale(0.95);
}

.icon-btn.highlight {
    background: hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.12);
    border-color: hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.25);
    color: var(--accent-color);
}

.icon-btn.highlight:hover {
    background: hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.2);
    border-color: hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.5);
    box-shadow: var(--shadow-glow);
}

.icon-btn.highlight svg {
    animation: none;
}
.icon-btn.highlight:hover .slider-notch-1 {
    animation: slideNotch1 1.0s ease-in-out infinite alternate;
}
.icon-btn.highlight:hover .slider-notch-2 {
    animation: slideNotch2 1.0s ease-in-out infinite alternate;
}
.icon-btn.highlight:hover .slider-notch-3 {
    animation: slideNotch3 1.0s ease-in-out infinite alternate;
}

@keyframes slideNotch1 {
    0% { transform: translateY(0px); }
    100% { transform: translateY(-4px); }
}
@keyframes slideNotch2 {
    0% { transform: translateY(0px); }
    100% { transform: translateY(4px); }
}
@keyframes slideNotch3 {
    0% { transform: translateY(0px); }
    100% { transform: translateY(-2.5px); }
}

.icon-btn .hide {
    display: none;
}

/* The native 3D experience is now a headline feature, not a utility icon. */
.feature-3d-button {
    width: 48px;
    height: 48px;
    margin: -5px 2px -5px -5px;
    isolation: isolate;
    border: 2px solid rgba(129, 140, 248, 0.72);
    background: radial-gradient(circle at 35% 28%, rgba(129, 140, 248, 0.26), rgba(7, 9, 20, 0.94) 68%);
    color: #f8fafc;
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.42), inset 0 0 12px rgba(34, 211, 238, 0.12);
}

.feature-3d-button::before {
    content: "";
    position: absolute;
    inset: -5px;
    z-index: -1;
    border-radius: 50%;
    background: conic-gradient(from 0deg, #22d3ee, #818cf8, #d946ef, #f59e0b, #22d3ee);
    box-shadow: 0 0 18px rgba(34, 211, 238, 0.36);
    animation: feature3DOrbit 5.5s linear infinite;
}

.feature-3d-button::before {
    -webkit-mask: radial-gradient(circle, transparent 61%, #000 64%);
    mask: radial-gradient(circle, transparent 61%, #000 64%);
}

.feature-3d-label {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 800;
    letter-spacing: 0.4px;
    text-shadow: 0 0 8px rgba(34, 211, 238, 0.82), 0 0 15px rgba(129, 140, 248, 0.65);
    animation: feature3DBreathe 2.8s ease-in-out infinite;
}

.feature-3d-button:hover {
    transform: translateY(-2px) scale(1.06);
    color: #ffffff;
    box-shadow: 0 0 25px rgba(34, 211, 238, 0.6), inset 0 0 16px rgba(129, 140, 248, 0.2);
}

.feature-3d-button.highlight {
    background: radial-gradient(circle at 35% 28%, rgba(34, 211, 238, 0.34), rgba(7, 9, 20, 0.96) 68%);
    border-color: rgba(34, 211, 238, 0.9);
}

@keyframes feature3DOrbit {
    to { transform: rotate(360deg); }
}

@keyframes feature3DBreathe {
    0%, 100% { transform: scale(0.94); opacity: 0.82; }
    50% { transform: scale(1.08); opacity: 1; }
}

/* Tooltips */
.tool-tip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: -32px;
    right: 50%;
    transform: translateX(50%) scale(0.9);
    background: rgba(8, 8, 12, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    font-size: 10px;
    padding: 4px 8px;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-snappy);
    box-shadow: var(--shadow-depth);
}

.tool-tip:hover::after {
    opacity: 1;
    transform: translateX(50%) scale(1);
}

/* Sidebar Edge Handle */
.sidebar-edge-handle {
    position: fixed;
    right: 0;
    top: 0;
    height: 100vh;
    width: 8px;
    background: rgba(255, 255, 255, 0.02);
    border-left: 1px solid rgba(255, 255, 255, 0.03);
    z-index: 40;
    cursor: ew-resize;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-snappy);
}

.sidebar-edge-handle:hover {
    background: rgba(255, 255, 255, 0.06);
    width: 14px;
}

.handle-line {
    width: 2px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 1px;
    transition: var(--transition-snappy);
}

.sidebar-edge-handle:hover .handle-line {
    background: var(--accent-color);
    box-shadow: var(--shadow-glow);
    height: 60px;
}

/* Sliding Drawer Control Panel (Aside) */
.control-panel {
    position: fixed;
    right: 0;
    top: 0;
    height: 100vh;
    width: var(--panel-width);
    z-index: 50;
    background: var(--bg-panel);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-left: 1px solid var(--border-glass);
    box-shadow: var(--shadow-depth);
    display: flex;
    flex-direction: column;
    transition: transform 0.35s cubic-bezier(0.25, 1, 0.3, 1);
}

.control-panel.panel-collapsed {
    transform: translateX(100%);
}

/* Panel Header */
.panel-header {
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-glass);
}

.panel-header-title h2 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.panel-header-title p {
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    margin-top: 1px;
}

.close-panel-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-snappy);
}

.close-panel-btn svg {
    width: 18px;
    height: 18px;
}

.close-panel-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

/* Panel Tabs Navigation */
.panel-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-glass);
    background: rgba(0, 0, 0, 0.2);
    padding: 0 16px;
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 14px 0;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 12px;
    letter-spacing: 0.5px;
    cursor: pointer;
    position: relative;
    transition: var(--transition-snappy);
    text-align: center;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--accent-color);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 10%;
    width: 80%;
    height: 2px;
    background: var(--accent-color);
    box-shadow: 0 0 8px var(--accent-color);
}

/* Panel Content Scroll Container */
.panel-content {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.tab-content {
    display: none;
    flex-direction: column;
    gap: 22px;
    animation: fadeInTab 0.25s ease;
}

.tab-content.active {
    display: flex;
}

@keyframes fadeInTab {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Setting Groups Layout */
.setting-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.setting-group.border-top {
    border-top: 1px solid var(--border-glass);
    padding-top: 20px;
}

.setting-sub-group {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 12px;
    padding: 14px;
    border: 1px solid rgba(255, 255, 255, 0.02);
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-top: -6px;
    animation: expandSubGroup 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.setting-sub-group.hidden {
    display: none;
}

@keyframes expandSubGroup {
    from { opacity: 0; transform: scaleY(0.95); transform-origin: top; }
    to { opacity: 1; transform: scaleY(1); }
}

/* Headers & Labels */
.setting-label-header {
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-secondary);
    display: block;
}

.setting-desc {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
    line-height: 1.4;
}

.setting-label {
    font-size: 12.5px;
    font-weight: 500;
    color: var(--text-primary);
}

.micro-tip {
    font-size: 10px;
    color: var(--text-muted);
    font-style: italic;
    margin-top: 4px;
}

/* Custom Range Input (Slider) */
.control-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
}

.control-item.disabled-element {
    opacity: 0.3;
    pointer-events: none;
}

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

.slider-value {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    color: var(--text-accent);
}

.range-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    outline: none;
    transition: background 0.3s;
}

.range-slider:hover {
    background: rgba(255, 255, 255, 0.12);
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-primary);
    cursor: pointer;
    border: 2px solid var(--bg-main);
    box-shadow: 0 0 0 2px var(--accent-color);
    transition: var(--transition-snappy);
}

.range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.3);
    background: var(--accent-color);
    box-shadow: 0 0 8px var(--accent-color);
}

.range-slider::-moz-range-thumb {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-primary);
    cursor: pointer;
    border: 2px solid var(--bg-main);
    box-shadow: 0 0 0 2px var(--accent-color);
    transition: var(--transition-snappy);
}

.range-slider::-moz-range-thumb:hover {
    transform: scale(1.3);
    background: var(--accent-color);
}

/* Custom Switch Toggle */
.control-switch {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.switch-info {
    display: flex;
    flex-direction: column;
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 22px;
    flex-shrink: 0;
}

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

.switch-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.08);
    transition: .3s cubic-bezier(0.25, 0.8, 0.25, 1);
    border-radius: 22px;
    border: 1px solid var(--border-glass);
}

.switch-slider:before {
    position: absolute;
    content: "";
    height: 14px;
    width: 14px;
    left: 3px;
    bottom: 3px;
    background-color: var(--text-secondary);
    transition: .3s cubic-bezier(0.25, 0.8, 0.25, 1);
    border-radius: 50%;
}

input:checked + .switch-slider {
    background-color: hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.15);
    border-color: var(--accent-color);
}

input:checked + .switch-slider:before {
    transform: translateX(22px);
    background-color: var(--accent-color);
    box-shadow: var(--shadow-glow);
}

.switch.small {
    width: 36px;
    height: 18px;
}

.switch.small .switch-slider:before {
    height: 10px;
    width: 10px;
    left: 3px;
    bottom: 3px;
}

input:checked + .switch.small .switch-slider:before {
    transform: translateX(18px);
}

/* Swatches Palette & Custom Pickers */
.flex-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.btn-text {
    background: transparent;
    border: none;
    color: var(--text-accent);
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-snappy);
}

.btn-text:hover {
    color: var(--text-primary);
    text-shadow: 0 0 5px var(--accent-glow);
}

.swatches-palette {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    min-height: 38px;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 12px;
    padding: 10px;
    border: 1px solid rgba(255, 255, 255, 0.02);
}

.color-swatch {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: var(--transition-smooth);
    position: relative;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.color-swatch:hover {
    transform: scale(1.15) translateY(-2px);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.4);
}

.color-swatch::after {
    content: '×';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 16px;
    font-weight: bold;
    opacity: 0;
    transition: var(--transition-snappy);
    text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}

.color-swatch:hover::after {
    opacity: 1;
}

/* Color Picker Container */
.color-picker-tools {
    display: flex;
    gap: 12px;
    align-items: center;
}

.picker-container {
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-glass);
    border-radius: 10px;
    padding: 6px 12px;
    gap: 8px;
    flex: 1;
}

.picker-container input[type="color"] {
    -webkit-appearance: none;
    border: none;
    width: 20px;
    height: 20px;
    border-radius: 4px;
    background: transparent;
    cursor: pointer;
}

.picker-container input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.picker-container input[type="color"]::-webkit-color-swatch {
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.picker-hex {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-secondary);
}

/* Styling buttons */
.btn {
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    padding: 8px 16px;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition-snappy);
    outline: none;
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--border-glass);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-glass-active);
}

.btn-primary {
    background: var(--accent-color);
    color: #fff;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    background: hsla(var(--accent-h), var(--accent-s), calc(var(--accent-l) - 6%), 1);
    box-shadow: 0 0 18px hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.35);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--color-danger);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.15);
    border-color: var(--color-danger);
}

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

.button-icon {
    flex-shrink: 0;
}

/* Background Color Picker Row */
.bg-picker-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.flex-end {
    display: flex;
    align-items: center;
}

/* Presets Grid styling */
.presets-grid {
    display: grid;
    grid-template-cols: repeat(2, 1fr);
    gap: 10px;
}

.preset-card {
    position: relative;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 12px;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-align: left;
}

.preset-card-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
}

.preset-favorite {
    border: 0;
    background: transparent;
    color: rgba(255, 255, 255, 0.22);
    cursor: pointer;
    font-size: 15px;
    line-height: 1;
    padding: 0 0 4px 6px;
    transition: color 0.2s ease, transform 0.2s ease;
}

.preset-favorite:hover,
.preset-favorite.active {
    color: #fbbf24;
    transform: scale(1.12);
}

.preset-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-glass-active);
    transform: translateY(-2px);
}

.preset-card.active {
    background: hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.07);
    border-color: var(--accent-color);
    box-shadow: 0 0 10px hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.1);
}

.preset-name {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 12px;
    color: var(--text-primary);
}

.preset-card.active .preset-name {
    color: var(--accent-color);
}

.preset-desc {
    font-size: 10px;
    color: var(--text-muted);
    margin-top: 2px;
    line-height: 1.3;
}

/* Media Exporter Section */
.exporter-actions {
    display: grid;
    grid-template-cols: repeat(2, 1fr);
    gap: 10px;
    margin-top: 10px;
}

/* Recording Pulse Dot */
.record-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-danger);
    transition: var(--transition-snappy);
}

.recording .record-dot {
    animation: recordPulse 1s infinite alternate;
}

@keyframes recordPulse {
    0% { transform: scale(1); opacity: 1; box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
    100% { transform: scale(1.3); opacity: 0.6; box-shadow: 0 0 8px 2px rgba(239, 68, 68, 0.4); }
}

/* Control Row (Align general text and items horizontally) */
.control-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.control-row-info {
    display: flex;
    flex-direction: column;
}

/* Dropdown styling */
.setting-select-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 4px;
}

.dropdown-select {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-glass);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 11px;
    padding: 4px 8px;
    outline: none;
    cursor: pointer;
    transition: var(--transition-snappy);
}

.dropdown-select:hover {
    border-color: var(--border-glass-active);
}

/* Toast Notifications */
.toast-notification {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(0);
    z-index: 100;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass-active);
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 500;
    padding: 10px 24px;
    border-radius: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s ease;
    pointer-events: none;
}

.toast-notification.toast-hidden {
    opacity: 0;
    transform: translateX(-50%) translateY(24px) scale(0.9);
}

/* Modal Overlay Guide */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease;
}

.modal-overlay.hidden {
    display: none;
}

.modal-card {
    background: rgba(8, 8, 12, 0.85);
    border: 1px solid var(--border-glass-active);
    border-radius: 20px;
    width: 90%;
    max-width: 440px;
    box-shadow: var(--shadow-depth);
    overflow: hidden;
    animation: scaleUpModal 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes scaleUpModal {
    from { transform: scale(0.85); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-glass);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.modal-close-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
    transition: var(--transition-snappy);
}

.modal-close-btn:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.shortcut-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.shortcut-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

kbd {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-bottom: 2px solid rgba(255, 255, 255, 0.25);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 4px 10px;
    color: var(--text-primary);
    min-width: 32px;
    text-align: center;
    box-shadow: 0 2px 0 rgba(0,0,0,0.2);
}

.shortcut-row span {
    color: var(--text-secondary);
    font-size: 13px;
}

.interaction-guide {
    border-top: 1px solid var(--border-glass);
    padding-top: 16px;
}

.interaction-guide h4 {
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.interaction-guide p {
    font-size: 11.5px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.interaction-guide ul {
    list-style: none;
    padding-left: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.interaction-guide li {
    font-size: 11px;
    color: var(--text-muted);
}

.interaction-guide li strong {
    color: var(--text-secondary);
}

/* Responsiveness adjustments for Mobile Devices */
@media (max-width: 480px) {
    :root {
        --panel-width: 100vw;
    }
    
    .hud-container {
        top: 16px;
        left: 16px;
        padding: 12px 16px;
    }
    
    .floating-controls {
        top: unset;
        bottom: 24px;
        right: 50% !important;
        transform: translateX(50%);
        width: max-content;
    }
    
    .floating-controls.panel-open {
        display: none; /* Hide floating bar when controls panel covers full mobile screen */
    }

    .sidebar-edge-handle {
        display: none; /* Drag handle disabled on mobile due to gesture clash */
    }
}

/* Headphones warning overlay */
.headphones-prompt {
    position: fixed;
    top: 96px;
    left: 50%;
    transform: translateX(-50%) translateY(0);
    z-index: 999;
    background: rgba(8, 8, 12, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.3);
    border-radius: 12px;
    padding: 12px 24px;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.5px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5), var(--shadow-glow);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: opacity 0.5s cubic-bezier(0.25, 1, 0.5, 1), transform 0.5s cubic-bezier(0.25, 1, 0.5, 1), visibility 0.5s;
    pointer-events: none;
}

.headphones-prompt.hidden {
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
    visibility: hidden;
}

.prompt-icon {
    font-size: 16px;
    animation: headphonesPulse 1.5s infinite alternate;
}

@keyframes headphonesPulse {
    0% { transform: scale(1); }
    100% { transform: scale(1.2); }
}

/* UI inactivity fade system */
.hud-container, .floating-controls, .sidebar-edge-handle, .control-panel {
    transition: opacity 0.6s cubic-bezier(0.25, 1, 0.5, 1), visibility 0.6s, transform 0.35s cubic-bezier(0.25, 1, 0.3, 1) !important;
}

.ui-faded {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

/* Splash Entry Overlay */
.splash-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(4, 4, 6, 0.88);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), visibility 0.8s;
    cursor: pointer;
    overflow-y: auto;
    padding: 20px 0;
    box-sizing: border-box;
}

.splash-overlay.fade-out {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.splash-card {
    max-width: 480px;
    padding: 40px;
    margin: 20px;
    border-radius: 24px;
    background: rgba(12, 12, 20, 0.5);
    border: 1px solid var(--border-glass-active);
    text-align: center;
    box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.6), var(--shadow-glow);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    animation: splashScaleIn 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes splashScaleIn {
    from { transform: scale(0.92); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.splash-title {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    letter-spacing: 2.5px;
    background: linear-gradient(135deg, #ffffff 40%, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 4px 20px rgba(255, 255, 255, 0.05);
}

.splash-subtitle {
    font-family: var(--font-display);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--text-muted);
    margin-top: -10px;
}

.splash-text {
    font-size: 13.5px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.splash-warning {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 14px;
    text-align: left;
}

.warning-headphones {
    font-size: 24px;
    animation: headphonesWobble 2.5s infinite ease-in-out;
}

@keyframes headphonesWobble {
    0%, 100% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(8deg) scale(1.1); }
}

.splash-warning p {
    font-size: 11px;
    color: var(--text-muted);
    line-height: 1.4;
    margin: 0;
}

.splash-warning strong {
    color: var(--text-primary);
}

.splash-entry-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    width: 100%;
}

.splash-entry-actions .btn {
    min-height: 43px;
}

.splash-preference-note {
    color: var(--text-muted);
    font-size: 10px;
    margin: -10px 0 0;
}

.splash-safety-warning {
    border-color: rgba(251, 191, 36, 0.24);
    background: rgba(251, 191, 36, 0.04);
}

.flow-personality-control {
    padding-bottom: 13px;
    margin-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.personality-segments {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 5px;
    margin: 8px 0 7px;
}

.personality-btn {
    border: 1px solid var(--border-glass);
    border-radius: 9px;
    background: rgba(255, 255, 255, 0.025);
    color: var(--text-muted);
    font: 600 10px var(--font-primary);
    padding: 8px 4px;
    cursor: pointer;
}

.personality-btn:hover,
.personality-btn.active {
    color: var(--text-primary);
    border-color: hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.55);
    background: hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.14);
    box-shadow: 0 0 12px hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.1);
}

.comfort-control {
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid rgba(125, 211, 252, 0.15);
    border-radius: 10px;
    background: rgba(125, 211, 252, 0.035);
}

body.comfort-mode .ambient-glow {
    opacity: 0.58 !important;
    transition-duration: 1.2s !important;
}

body.comfort-mode .warning-headphones,
body.comfort-mode .sidebar-edge-handle,
body.comfort-mode .icon-btn.highlight svg,
body.comfort-mode .feature-3d-button::before,
body.comfort-mode .feature-3d-label {
    animation: none !important;
}

@media (prefers-reduced-motion: reduce) {
    .splash-card,
    .warning-headphones,
    .sidebar-edge-handle,
    .icon-btn svg,
    .feature-3d-button::before,
    .feature-3d-label {
        animation: none !important;
    }
}

@media (max-width: 480px) {
    .splash-card {
        padding: 26px 20px;
        gap: 14px;
    }

    .splash-entry-actions {
        grid-template-columns: 1fr;
    }
}

.splash-cta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--text-accent);
    text-transform: uppercase;
    margin-top: 15px;
}

.cta-pulse {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-accent);
    box-shadow: 0 0 8px var(--text-accent);
    animation: ctaPulseAnim 1.2s infinite alternate;
}

@keyframes ctaPulseAnim {
    0% { transform: scale(1); opacity: 0.5; box-shadow: 0 0 0 0 rgba(129, 140, 248, 0.4); }
    100% { transform: scale(1.4); opacity: 1; box-shadow: 0 0 8px 3px rgba(129, 140, 248, 0.6); }
}

/* Hide flow toggle pills when Autopilot is disabled */
body:not(.autopilot-active) .flow-toggle-group {
    display: none !important;
}

/* Segments for Manual vs Flow control in Autopilot */
.flow-toggle-group {
    display: inline-flex;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 1px;
    cursor: pointer;
    font-size: 8px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    user-select: none;
    margin-left: auto;
    margin-right: 8px;
    height: 15px;
    align-items: center;
}
.flow-toggle-option {
    padding: 2px 6px;
    border-radius: 10px;
    transition: all 0.2s ease;
    opacity: 0.5;
    color: var(--text-primary);
    font-size: 8px;
    line-height: 1;
}
.flow-toggle-option.active {
    background: var(--accent-color);
    color: #000 !important;
    opacity: 1;
    font-weight: 700;
    box-shadow: 0 0 6px var(--accent-color);
}

/* Settings Help Tooltip Popup Overlay */
.help-tooltip-popup {
    position: absolute;
    top: 155px;
    left: -240px;
    width: 220px;
    background: rgba(10, 10, 15, 0.95);
    border: 1px solid var(--accent-color);
    border-radius: 12px;
    padding: 14px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5), 0 0 15px rgba(99, 102, 241, 0.2);
    z-index: 1001;
    color: var(--text-primary);
    font-family: var(--font-main);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: auto;
}
.help-tooltip-popup.hidden {
    opacity: 0;
    transform: translateX(20px) scale(0.95);
    pointer-events: none;
}
.help-tooltip-popup h3 {
    margin: 0 0 8px 0;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-accent);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.help-tooltip-popup p {
    margin: 0 0 8px 0;
    font-size: 10.5px;
    color: var(--text-muted);
    line-height: 1.4;
}
.help-tooltip-popup ul {
    margin: 0 0 8px 0;
    padding-left: 14px;
    font-size: 10px;
    color: var(--text-muted);
    line-height: 1.4;
}
.help-tooltip-popup li {
    margin-bottom: 4px;
}
.help-tooltip-popup .click-dismiss {
    margin: 8px 0 0 0;
    font-size: 9px;
    color: var(--text-accent);
    text-align: center;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}
.help-tooltip-popup::after {
    content: '';
    position: absolute;
    top: 25px;
    right: -6px;
    width: 10px;
    height: 10px;
    background: rgba(10, 10, 15, 0.95);
    border-top: 1px solid var(--accent-color);
    border-right: 1px solid var(--accent-color);
    transform: rotate(45deg);
}

@media (max-width: 768px) {
    .help-tooltip-popup {
        left: 20px;
        right: 20px;
        width: auto;
        top: 200px;
        transform: translateY(20px);
    }
    .help-tooltip-popup.hidden {
        transform: translateY(40px) scale(0.95);
    }
    .help-tooltip-popup::after {
        display: none;
    }
}

/* ==========================================================================
   DEVELOPER DIAGNOSTIC OVERLAY CONSOLE
   ========================================================================== */
.diagnostic-console {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 420px;
    height: 360px;
    background: rgba(10, 10, 15, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 50, 50, 0.25);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), inset 0 1px 1px rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    z-index: 10000;
    transition: transform var(--transition-smooth), opacity var(--transition-smooth);
    opacity: 1;
    transform: translateY(0);
}

.diagnostic-console.hidden {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    pointer-events: none;
}

.console-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: rgba(0, 0, 0, 0.4);
    border-bottom: 1px solid rgba(255, 50, 50, 0.15);
    border-top-left-radius: 12px;
    border-top-right-radius: 12px;
}

.console-header h3 {
    margin: 0;
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 1px;
    color: #ff3333;
    font-family: var(--font-primary);
}

.console-close-btn {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: color 0.2s;
    line-height: 1;
}

.console-close-btn:hover {
    color: #ff3333;
}

.console-perf-stats {
    padding: 12px 14px;
    background: rgba(18, 18, 28, 0.6);
    border-bottom: 1px solid rgba(255, 50, 50, 0.15);
    font-family: 'Fira Code', monospace;
    font-size: 10.5px;
    color: #a5b4fc;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 12px;
}

.console-body {
    flex: 1;
    padding: 12px;
    overflow-y: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 10.5px;
    line-height: 1.45;
    color: rgba(255, 255, 255, 0.85);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.console-body::-webkit-scrollbar {
    width: 6px;
}
.console-body::-webkit-scrollbar-track {
    background: transparent;
}
.console-body::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 3px;
}
.console-body::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 50, 50, 0.3);
}

.log-entry {
    border-left: 2px solid #555;
    padding-left: 8px;
    white-space: pre-wrap;
    word-break: break-all;
}

.log-entry.log-info {
    border-color: #6366f1;
    color: #a5b4fc;
}

.log-entry.log-warn {
    border-color: #fbbf24;
    color: #fde047;
}

.log-entry.log-error {
    border-color: #ef4444;
    color: #fca5a5;
    text-shadow: 0 0 4px rgba(255, 0, 0, 0.25);
}

@media (max-width: 480px) {
    .diagnostic-console {
        width: calc(100% - 32px);
        left: 16px;
        right: 16px;
        bottom: 16px;
    }
}

/* ==========================================================================
   3D WEBGL & WEBXR STEREOSCOPIC VR OVERLAY STYLES
   ========================================================================== */
#webgl-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    display: block;
    outline: none;
}

#webgl-canvas.hidden {
    display: none !important;
}

.hide {
    display: none !important;
}

/* History buttons in sidebar */
.btn-history {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: 6px;
    color: var(--text-secondary);
    font-family: var(--font-primary);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.5px;
    padding: 6px 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    outline: none;
}

.btn-history:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.12);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-history:active:not(:disabled) {
    transform: scale(0.95);
}

.btn-history:disabled {
    opacity: 0.25;
    cursor: not-allowed;
}

#history-rand-btn {
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.35);
    color: var(--text-primary);
}

#history-rand-btn:hover {
    background: rgba(99, 102, 241, 0.25);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.2);
}

#music-react-quick-btn.music-react-busy {
    color: #94a3b8;
    border-color: rgba(148, 163, 184, 0.45);
    animation: musicCapturePulse 0.8s infinite alternate ease-in-out;
}

#music-react-quick-btn.music-react-active {
    color: #07130b;
    background: #1ed760;
    border-color: #69f59b;
    box-shadow: 0 0 18px rgba(30, 215, 96, 0.72), inset 0 0 8px rgba(255, 255, 255, 0.35);
}
@keyframes musicCapturePulse {
    0% { transform: scale(0.9); opacity: 0.7; box-shadow: 0 0 4px #1ed760; }
    100% { transform: scale(1.3); opacity: 1; box-shadow: 0 0 12px #1ed760; }
}

/* --- HARMONIC PALETTE DESIGNER UI --- */
.harmonic-designer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 10px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass-muted);
    border-radius: 8px;
    margin-top: 15px;
    cursor: pointer;
    transition: var(--transition-smooth);
    user-select: none;
}

.harmonic-designer-header:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: var(--border-glass-active);
}

.harmonic-designer-title {
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.8px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.harmonic-designer-title::before {
    content: "🎨";
    font-size: 12px;
}

.harmonic-designer-arrow {
    font-size: 8px;
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.harmonic-designer-header.expanded .harmonic-designer-arrow {
    transform: rotate(180deg);
}

.harmonic-designer-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.25, 1, 0.5, 1), padding 0.3s;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid transparent;
    border-top: none;
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
    padding: 0 10px;
    box-sizing: border-box;
}

.harmonic-designer-header.expanded + .harmonic-designer-content {
    max-height: 800px;
    padding: 12px 10px;
    border-color: var(--border-glass-muted);
}

/* Harmony Selection Tabs */
.harmony-rule-tabs {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 4px;
    margin-bottom: 12px;
}

.harmony-tab {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: 8px;
    font-weight: 700;
    text-transform: uppercase;
    padding: 6px 2px;
    border-radius: 4px;
    cursor: pointer;
    text-align: center;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.harmony-tab:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.harmony-tab.active {
    background: var(--bg-glass-active);
    border-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.05);
}

/* Spectrum Slider Background for Hue */
.hue-slider-track {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 4px;
    outline: none;
    background: linear-gradient(to right, 
        #ff0000 0%, #ffff00 17%, #00ff00 33%, 
        #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%
    );
    margin: 8px 0;
}

.hue-slider-track::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #ffffff;
    border: 2px solid #000000;
    cursor: pointer;
    box-shadow: 0 0 3px rgba(0, 0, 0, 0.5);
    transition: transform 0.1s ease;
}

.hue-slider-track::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* Swatches Preview Row */
.harmonic-preview-row {
    display: flex;
    justify-content: space-between;
    gap: 6px;
    margin: 12px 0;
}

.preview-swatch-item {
    flex: 1;
    height: 28px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: inset 0 0 4px rgba(0,0,0,0.3);
    transition: transform 0.2s ease, border-color 0.2s;
}

.preview-swatch-item:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.4);
}

/* Save Preset Swatch form */
.save-swatch-form {
    display: flex;
    gap: 6px;
    margin-top: 10px;
}

.save-swatch-input {
    flex: 1;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-glass-muted);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 6px 10px;
    font-size: 11px;
    outline: none;
}

.save-swatch-input:focus {
    border-color: var(--border-glass-active);
}

/* Saved Themes library Grid */
.saved-swatches-library {
    margin-top: 15px;
    border-top: 1px dashed var(--border-glass-muted);
    padding-top: 15px;
}

.saved-swatches-grid {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 140px;
    overflow-y: auto;
    margin-top: 8px;
    padding-right: 4px;
}

.saved-swatch-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 8px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass-muted);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.saved-swatch-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-glass-active);
}

.saved-swatch-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.saved-swatch-name {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 140px;
}

.saved-swatch-colors {
    display: flex;
    gap: 2px;
}

.saved-swatch-circle {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.05);
}

.btn-delete-swatch {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 12px;
    cursor: pointer;
    padding: 4px;
    line-height: 1;
    border-radius: 4px;
    transition: background 0.2s, color 0.2s;
}

.btn-delete-swatch:hover {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

/* --- THEMED COLOR PLAYLISTS / CYCLES --- */
.theme-cycles-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    margin-top: 8px;
    margin-bottom: 12px;
}

.theme-cycle-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass-muted);
    border-radius: 8px;
    color: var(--text-secondary);
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 500;
    padding: 8px 10px;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.theme-cycle-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-glass-active);
    color: var(--text-primary);
}

.theme-cycle-btn.active {
    background: var(--bg-glass-active);
    border-color: var(--accent-color);
    color: #ffffff;
    box-shadow: var(--shadow-glow);
    font-weight: 600;
}

/* HUD State Styles */
.hud-current-state {
    margin-top: 15px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 15px;
}

.hud-state-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.03);
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: background 0.2s, border-color 0.2s;
}

.hud-state-row:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
}

.hud-state-label {
    font-size: 10px;
    letter-spacing: 1px;
    color: var(--text-muted);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 8px;
}

.hud-state-label span {
    color: var(--text-color);
    font-weight: 600;
    font-size: 11px;
}

.hud-state-actions {
    display: flex;
    gap: 6px;
}

.hud-icon-btn {
    pointer-events: auto;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    border-radius: 4px;
    padding: 4px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.hud-icon-btn svg {
    width: 14px;
    height: 14px;
    transition: all 0.2s;
}

.hud-icon-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.hud-icon-btn.active-star {
    color: #ffd700;
    border-color: rgba(255, 215, 0, 0.4);
    box-shadow: 0 0 8px rgba(255, 215, 0, 0.2);
}

.hud-icon-btn.active-star svg {
    stroke: #ffd700;
    fill: #ffd700;
}

.hud-icon-btn.active-lock {
    color: #00ffff;
    border-color: rgba(0, 255, 255, 0.4);
    box-shadow: 0 0 8px rgba(0, 255, 255, 0.2);
}

.hud-icon-btn.active-lock svg {
    stroke: #00ffff;
}

.hud-icon-btn.active-ban {
    color: #ff4757;
    border-color: rgba(255, 71, 87, 0.4);
    box-shadow: 0 0 8px rgba(255, 71, 87, 0.2);
}
.hud-icon-btn.active-ban svg {
    stroke: #ff4757;
}
.hud-dice-btn:hover { color: #8be9ff; border-color: rgba(101, 222, 255, 0.68); box-shadow: 0 0 10px rgba(77, 210, 255, 0.24); }
.hud-dice-btn.is-rolling svg { animation: hud-dice-roll 0.52s cubic-bezier(0.2, 0.7, 0.25, 1); }
@keyframes hud-dice-roll { 0% { transform: rotate(0deg) scale(1); } 45% { transform: rotate(190deg) scale(1.2); } 100% { transform: rotate(360deg) scale(1); } }

.hud-swatches {
    pointer-events: auto;
    display: flex;
    gap: 4px;
    align-items: center;
    margin-left: 4px;
}

.hud-scene-row { margin-top: 8px; padding-top: 8px; border-top: 1px solid rgba(255, 255, 255, 0.08); }
.hud-scene-save { pointer-events: auto; width: 100%; border: 1px solid rgba(139, 92, 246, 0.62); border-radius: 7px; padding: 8px 10px; color: #f4f0ff; background: linear-gradient(100deg, rgba(92, 55, 185, 0.65), rgba(32, 121, 156, 0.48)); box-shadow: 0 0 16px rgba(119, 92, 246, 0.17); cursor: pointer; font-family: var(--font-display); font-size: 10px; font-weight: 700; letter-spacing: 1.1px; transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease; }
.hud-scene-save:hover { transform: translateY(-1px); border-color: rgba(183, 158, 255, 0.9); box-shadow: 0 0 21px rgba(139, 92, 246, 0.4); }
.hud-share-row { pointer-events: auto; display: flex; justify-content: center; margin-top: 10px; }
.hud-share-btn { pointer-events: auto; width: min(100%, 230px); min-height: 44px; border: 1px solid rgba(255, 255, 255, 0.18); border-radius: 8px; padding: 8px 14px; color: var(--text-secondary); background: rgba(0, 0, 0, 0.32); cursor: pointer; font-family: var(--font-display); font-size: 12px; font-weight: 700; letter-spacing: 0.8px; transition: transform 0.18s ease, color 0.18s ease, border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease; }
.hud-share-btn:hover { transform: translateY(-1px); color: #ffffff; border-color: rgba(129, 221, 255, 0.78); background: rgba(70, 156, 205, 0.32); box-shadow: 0 0 15px rgba(86, 191, 255, 0.28); }
.hud-share-primary { color: #ffffff; border-color: rgba(144, 124, 255, 0.78); background: linear-gradient(105deg, rgba(98, 63, 195, 0.72), rgba(37, 137, 172, 0.56)); box-shadow: 0 0 16px rgba(119, 92, 246, 0.22); }
.hud-share-primary:hover { border-color: rgba(196, 183, 255, 0.95); background: linear-gradient(105deg, rgba(116, 79, 219, 0.82), rgba(44, 161, 203, 0.68)); box-shadow: 0 0 22px rgba(124, 107, 255, 0.42); }
.custom-presets-grid { display: grid; gap: 7px; margin-top: 10px; }
.custom-preset-empty { padding: 11px 8px; color: var(--text-muted); border: 1px dashed rgba(255, 255, 255, 0.13); border-radius: 7px; font-size: 10px; line-height: 1.45; text-align: center; }
.custom-preset-card { padding: 8px; border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 7px; background: rgba(255, 255, 255, 0.035); cursor: pointer; transition: background 0.18s ease, border-color 0.18s ease, transform 0.18s ease; }
.custom-preset-card:hover, .custom-preset-card:focus-visible { border-color: rgba(139, 197, 255, 0.62); background: rgba(103, 157, 225, 0.11); transform: translateY(-1px); outline: none; }
.custom-preset-heading, .custom-preset-actions, .custom-preset-swatches { display: flex; align-items: center; }
.custom-preset-heading { justify-content: space-between; gap: 8px; }
.custom-preset-name { color: var(--text-primary); font-size: 10px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.custom-preset-actions { gap: 4px; }
.custom-preset-action { border: none; border-radius: 4px; padding: 3px 5px; color: var(--text-muted); background: transparent; cursor: pointer; font: inherit; font-size: 9px; }
.custom-preset-action:hover { color: #ffffff; background: rgba(255, 255, 255, 0.1); }
.custom-preset-action.danger:hover { color: #ff9ea8; background: rgba(239, 68, 68, 0.14); }
.custom-preset-swatches { gap: 4px; margin-top: 7px; }
.custom-preset-swatches span { width: 10px; height: 10px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, 0.25); }

.hud-swatch-circle {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 4px rgba(0,0,0,0.5);
}

.preset-card.excluded {
    opacity: 0.4;
    filter: grayscale(80%);
    order: 999;
}
.preset-card.excluded:hover {
    opacity: 0.8;
}
.preset-ban {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 14px;
    padding: 4px;
    line-height: 1;
    transition: color 0.2s, transform 0.2s;
    margin-right: 4px;
}
.preset-ban:hover {
    color: #ff4757;
    transform: scale(1.2);
}
.preset-ban.active {
    color: #ff4757;
}