/* ==========================================================================
   AETHERIS AI - DESIGN SYSTEM & STYLESHEET
   ========================================================================== */

/* --- 1. CSS CUSTOM PROPERTIES (DESIGN SYSTEM TOKENS) --- */
:root {
    /* Color Palette */
    --bg-dark: #030307;
    --bg-panel: rgba(10, 12, 22, 0.55);
    --bg-terminal: rgba(6, 7, 13, 0.9);
    --border-glow: rgba(255, 255, 255, 0.08);
    
    /* Neon Accents */
    --neon-cyan: #00f2fe;
    --neon-cyan-rgb: 0, 242, 254;
    --neon-purple: #b827fc;
    --neon-purple-rgb: 184, 39, 252;
    --neon-pink: #ff007f;
    --neon-pink-rgb: 255, 0, 127;
    --neon-amber: #f39c12;
    --neon-amber-rgb: 243, 156, 18;
    --neon-green: #2ecc71;
    
    /* Typography */
    --font-header: 'Orbitron', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Share Tech Mono', monospace;
    
    /* Glow Shadows */
    --glow-cyan: 0 0 15px rgba(0, 242, 254, 0.35), 0 0 30px rgba(0, 242, 254, 0.15);
    --glow-purple: 0 0 15px rgba(184, 39, 252, 0.35), 0 0 30px rgba(184, 39, 252, 0.15);
    --glow-pink: 0 0 15px rgba(255, 0, 127, 0.35), 0 0 30px rgba(255, 0, 127, 0.15);
    --glow-amber: 0 0 15px rgba(243, 156, 18, 0.35), 0 0 30px rgba(243, 156, 18, 0.15);
    
    /* Speed Variables */
    --transition-fast: 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-normal: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-slow: 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* --- 2. GLOBAL RESET & BASE SETTINGS --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-user-drag: none;
}

html {
    scroll-behavior: smooth;
    overflow: hidden;
    background-color: var(--bg-dark);
}

body {
    font-family: var(--font-body);
    color: #e2e8f0;
    line-height: 1.6;
    overflow: hidden;
    height: 100vh;
    width: 100vw;
    cursor: none; /* Hide hardware cursor for custom double-ring cursor */
}

/* Custom Scrollbars for viewport containers */
::-webkit-scrollbar {
    width: 4px;
    height: 4px;
}
::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
}
::-webkit-scrollbar-thumb {
    background: var(--neon-purple);
    border-radius: 2px;
    box-shadow: 0 0 10px var(--neon-purple);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--neon-cyan);
    box-shadow: 0 0 10px var(--neon-cyan);
}

/* Selection aesthetics */
::selection {
    background: rgba(0, 242, 254, 0.3);
    color: #ffffff;
}

/* Typography Anchors */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-header);
    letter-spacing: 1px;
    font-weight: 700;
}

a {
    color: inherit;
    text-decoration: none;
    cursor: none;
}

/* --- 3. PERSISTENT INTERACTIVE CANVAS BACKGROUND --- */
#neural-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: auto; /* Allow interactions (hover nodes, pull force) */
    background: radial-gradient(circle at 50% 50%, #080816 0%, var(--bg-dark) 100%);
}

/* --- 4. DIGITAL CYBERNETIC OVERLAYS --- */
/* Subtle scanline lines */
.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.03), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.03));
    background-size: 100% 4px, 6px 100%;
    z-index: 999;
    pointer-events: none;
    opacity: 0.45;
}

/* Micro analog noise overlay */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.02'/%3E%3C/svg%3E");
    z-index: 998;
    pointer-events: none;
}

/* --- 5. DOUBLE-RING NEON CURSOR --- */
#cursor-dot {
    position: fixed;
    width: 6px;
    height: 6px;
    background: var(--neon-cyan);
    border-radius: 50%;
    pointer-events: none;
    z-index: 10000;
    transform: translate(-50%, -50%);
    transition: width 0.1s, height 0.1s, background-color 0.2s;
    box-shadow: 0 0 10px var(--neon-cyan);
}

#cursor-ring {
    position: fixed;
    width: 32px;
    height: 32px;
    border: 1px solid rgba(184, 39, 252, 0.6);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 8px rgba(184, 39, 252, 0.2);
    transition: width 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), height 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), border-color 0.3s, background-color 0.3s, transform 0.05s;
}

/* Cursor State Variations updated dynamically in app.js */
body.hovering-link #cursor-dot {
    width: 4px;
    height: 4px;
    background: var(--neon-pink);
    box-shadow: 0 0 12px var(--neon-pink);
}

body.hovering-link #cursor-ring {
    width: 52px;
    height: 52px;
    border-color: var(--neon-pink);
    background: rgba(255, 0, 127, 0.05);
    box-shadow: 0 0 15px rgba(255, 0, 127, 0.4);
}

body.hovering-magnet #cursor-ring {
    width: 60px;
    height: 60px;
    border-color: var(--neon-cyan);
    border-style: dashed;
    animation: rotateRing 8s linear infinite;
}

body.active-click #cursor-ring {
    width: 20px;
    height: 20px;
    border-color: var(--neon-cyan);
    background: rgba(0, 242, 254, 0.2);
}

@keyframes rotateRing {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* --- 6. FLOATING HUD HEADER --- */
.hud-header {
    position: fixed;
    top: 24px;
    left: 24px;
    right: 24px;
    height: 64px;
    background: var(--bg-panel);
    border: 1px solid var(--border-glow);
    border-radius: 12px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 100;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.hud-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo {
    width: 24px;
    height: 24px;
    border: 2px solid var(--neon-cyan);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.logo-core {
    width: 8px;
    height: 8px;
    background: var(--neon-cyan);
    border-radius: 2px;
    animation: pulseGlow 2s infinite;
    box-shadow: 0 0 8px var(--neon-cyan);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 16px;
    letter-spacing: 2px;
    color: #ffffff;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
}

.logo-sub {
    font-size: 9px;
    font-family: var(--font-mono);
    color: var(--neon-cyan);
    letter-spacing: 1px;
}

.hud-diagnostics {
    display: flex;
    gap: 24px;
    font-family: var(--font-mono);
    font-size: 11px;
}

.diag-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.diag-label {
    color: #64748b;
    font-size: 9px;
}

.diag-val {
    color: #f8fafc;
    font-weight: bold;
}

.pulse-green {
    color: var(--neon-green);
    position: relative;
}

.pulse-green::after {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--neon-green);
    border-radius: 50%;
    margin-left: 6px;
    vertical-align: middle;
    animation: statusPulse 1.5s infinite;
    box-shadow: 0 0 6px var(--neon-green);
}

/* Audio Toggle Button with visualizer spikes */
.hud-audio-toggle {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: #94a3b8;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    outline: none;
    transition: var(--transition-fast);
}

.hud-audio-toggle:hover {
    border-color: var(--neon-purple);
    color: #ffffff;
    box-shadow: 0 0 12px rgba(184, 39, 252, 0.2);
}

.audio-wave {
    display: flex;
    align-items: flex-end;
    gap: 2.5px;
    height: 12px;
    width: 14px;
}

.audio-wave span {
    display: block;
    width: 2px;
    height: 2px;
    background-color: currentColor;
    border-radius: 1px;
    transition: height 0.3s;
}

/* Animated wave columns when active */
.hud-audio-toggle.active {
    color: var(--neon-cyan);
    border-color: var(--neon-cyan);
    box-shadow: 0 0 12px rgba(0, 242, 254, 0.2);
}

.hud-audio-toggle.active .audio-wave span:nth-child(1) { animation: wavePulse 1s ease-in-out infinite alternate; }
.hud-audio-toggle.active .audio-wave span:nth-child(2) { animation: wavePulse 0.8s ease-in-out 0.15s infinite alternate; }
.hud-audio-toggle.active .audio-wave span:nth-child(3) { animation: wavePulse 1.2s ease-in-out 0.3s infinite alternate; }
.hud-audio-toggle.active .audio-wave span:nth-child(4) { animation: wavePulse 0.9s ease-in-out 0.05s infinite alternate; }

@keyframes wavePulse {
    0% { height: 2px; }
    100% { height: 12px; }
}

/* --- 7. HUD SIDEBAR NAVIGATION --- */
.hud-nav {
    position: fixed;
    left: 42px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
}

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 16px;
    position: relative;
}

.nav-dot {
    width: 8px;
    height: 8px;
    border: 2px solid #475569;
    border-radius: 50%;
    background: transparent;
    transition: var(--transition-normal);
    position: relative;
}

.nav-dot::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 18px;
    height: 18px;
    border: 1px solid var(--neon-purple);
    border-radius: 50%;
    opacity: 0;
    transition: var(--transition-normal);
}

.nav-label {
    font-family: var(--font-header);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: #475569;
    opacity: 0;
    transform: translateX(-10px);
    transition: var(--transition-normal);
    white-space: nowrap;
    pointer-events: none;
}

/* Sidebar navigation interactions */
.nav-item:hover .nav-dot,
.nav-item.active .nav-dot {
    border-color: var(--neon-purple);
    background: var(--neon-purple);
    box-shadow: 0 0 10px var(--neon-purple);
}

.nav-item:hover .nav-dot::before,
.nav-item.active .nav-dot::before {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

.nav-item:hover .nav-label {
    opacity: 1;
    transform: translateX(0);
    color: #ffffff;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

.nav-item.active .nav-label {
    opacity: 1;
    transform: translateX(0);
    color: var(--neon-purple);
}

/* --- 8. STYLED MULTI-PAGE VIEWPORT STRUCTURE --- */
.viewport-container {
    height: 100vh;
    width: 100vw;
    overflow-y: scroll;
    scroll-snap-type: y mandatory;
    scroll-behavior: smooth;
    z-index: 10;
    position: relative;
}

.viewport-section {
    width: 100vw;
    height: 100vh;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 100px 8% 80px 180px;
}

/* High-tech matrix background grid overlays per section */
.section-overlay-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: 40px 40px;
    background-image: linear-gradient(to right, rgba(255, 255, 255, 0.015) 1px, transparent 1px), linear-gradient(to bottom, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    pointer-events: none;
    z-index: 1;
    mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, #000 40%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, #000 40%, transparent 100%);
}

.section-content {
    position: relative;
    z-index: 5;
    width: 100%;
    max-width: 1200px;
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s cubic-bezier(0.215, 0.61, 0.355, 1), transform 1s cubic-bezier(0.215, 0.61, 0.355, 1);
}

/* Activated section triggers fade in and lifts up content */
.viewport-section.active .section-content {
    opacity: 1;
    transform: translateY(0);
}

/* Generic Section Header */
.section-header {
    margin-bottom: 40px;
    max-width: 700px;
}

.section-tag {
    font-family: var(--font-mono);
    color: var(--neon-cyan);
    font-size: 11px;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 8px;
    text-shadow: 0 0 8px rgba(0, 242, 254, 0.2);
}

.section-title {
    font-size: clamp(24px, 3.5vw, 42px);
    color: #ffffff;
    margin-bottom: 12px;
    line-height: 1.1;
    font-weight: 900;
    text-transform: uppercase;
}

.section-desc {
    font-size: 15px;
    color: #94a3b8;
    max-width: 600px;
}

/* --- 9. HERO PORTAL VIEW --- */
.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-tech-badge {
    background: rgba(0, 242, 254, 0.05);
    border: 1px solid rgba(0, 242, 254, 0.2);
    border-radius: 4px;
    padding: 4px 10px;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--neon-cyan);
    letter-spacing: 1.5px;
    margin-bottom: 20px;
    text-shadow: 0 0 5px rgba(0, 242, 254, 0.3);
}

.hero-title {
    font-size: clamp(36px, 5.5vw, 68px);
    font-weight: 900;
    line-height: 1.05;
    color: #ffffff;
    margin-bottom: 24px;
    text-transform: uppercase;
}

.hero-desc {
    font-size: clamp(15px, 1.8vw, 18px);
    color: #94a3b8;
    max-width: 680px;
    margin-bottom: 36px;
    font-weight: 300;
}

/* Glowing text helpers */
.text-cyan { color: var(--neon-cyan); text-shadow: 0 0 10px rgba(0, 242, 254, 0.2); }
.text-purple { color: var(--neon-purple); text-shadow: 0 0 10px rgba(184, 39, 252, 0.2); }
.text-pink { color: var(--neon-pink); text-shadow: 0 0 10px rgba(255, 0, 127, 0.2); }
.text-amber { color: var(--neon-amber); text-shadow: 0 0 10px rgba(243, 156, 18, 0.2); }

/* --- 10. INTERACTIVE TERMINAL HUB --- */
.cyber-terminal {
    width: 100%;
    max-width: 720px;
    background: var(--bg-terminal);
    border: 1px solid var(--border-glow);
    border-radius: 12px;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.6);
    overflow: hidden;
    margin-bottom: 40px;
    transition: var(--transition-normal);
}

.cyber-terminal:hover {
    border-color: rgba(0, 242, 254, 0.3);
    box-shadow: 0 15px 50px rgba(0, 242, 254, 0.05);
}

.terminal-header {
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    height: 38px;
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 8px;
}

.term-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}
.term-dot.red { background: var(--neon-pink); }
.term-dot.yellow { background: var(--neon-amber); }
.term-dot.green { background: var(--neon-green); }

.term-title {
    font-family: var(--font-mono);
    font-size: 10px;
    color: #64748b;
    margin-left: 8px;
    flex-grow: 1;
}

.term-status {
    font-family: var(--font-mono);
    font-size: 9px;
    background: rgba(46, 204, 113, 0.1);
    color: var(--neon-green);
    border: 1px solid rgba(46, 204, 113, 0.2);
    padding: 1px 6px;
    border-radius: 3px;
}

.terminal-body {
    padding: 20px;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    height: 180px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.terminal-output {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 6px;
}

.terminal-line {
    color: #94a3b8;
}

.terminal-line.system {
    color: #475569;
}

.terminal-line.output-text {
    color: var(--neon-cyan);
    text-shadow: 0 0 4px rgba(0, 242, 254, 0.3);
}

.terminal-line.success {
    color: var(--neon-green);
}

.terminal-line.error {
    color: var(--neon-pink);
}

.terminal-input-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    padding-top: 10px;
    color: #ffffff;
}

.terminal-prompt {
    color: var(--neon-purple);
    font-weight: bold;
}

.terminal-input-display {
    color: #f8fafc;
    letter-spacing: 0.5px;
}

.terminal-cursor {
    animation: cursorBlink 1s step-end infinite;
    color: var(--neon-cyan);
}

@keyframes cursorBlink {
    from, to { opacity: 0; }
    50% { opacity: 1; }
}

.terminal-controls {
    display: flex;
    flex-wrap: wrap;
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    padding: 8px 16px;
    gap: 12px;
}

.terminal-btn-tag {
    background: transparent;
    border: none;
    outline: none;
    font-family: var(--font-mono);
    font-size: 11px;
    color: #64748b;
    cursor: none;
    transition: var(--transition-fast);
    padding: 4px 8px;
    border-radius: 4px;
}

.terminal-btn-tag:hover {
    color: var(--neon-cyan);
    background: rgba(0, 242, 254, 0.05);
}

/* Button UI Components */
.btn-group {
    display: flex;
    gap: 16px;
}

.hero-action-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    position: relative;
    padding: 14px 28px;
    border-radius: 8px;
    font-family: var(--font-header);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.5px;
    overflow: hidden;
    transition: var(--transition-normal);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background: var(--neon-cyan);
    border: 1px solid var(--neon-cyan);
    color: #030307;
}

.btn-primary:hover {
    background: transparent;
    color: #ffffff;
    box-shadow: var(--glow-cyan);
}

.btn-glow {
    position: absolute;
    top: 0;
    left: -50%;
    width: 200%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: skewX(-20deg);
    animation: glowSweep 3s infinite;
}

@keyframes glowSweep {
    0% { left: -100%; }
    100% { left: 100%; }
}

.btn-secondary {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #94a3b8;
}

.btn-secondary:hover {
    border-color: #ffffff;
    color: #ffffff;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.1);
}

.btn-sm {
    padding: 10px 18px;
    font-size: 10px;
}

/* --- 11. MODALITY PANELS GRID --- */
.modalities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    width: 100%;
}

.modality-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-glow);
    border-radius: 16px;
    padding: 32px 24px;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

/* Glow styles applied uniquely to card hover grids */
.modality-card.card-glow-cyan:hover { border-color: var(--neon-cyan); box-shadow: var(--glow-cyan); transform: translateY(-6px) scale(1.01); }
.modality-card.card-glow-purple:hover { border-color: var(--neon-purple); box-shadow: var(--glow-purple); transform: translateY(-6px) scale(1.01); }
.modality-card.card-glow-pink:hover { border-color: var(--neon-pink); box-shadow: var(--glow-pink); transform: translateY(-6px) scale(1.01); }
.modality-card.card-glow-amber:hover { border-color: var(--neon-amber); box-shadow: var(--glow-amber); transform: translateY(-6px) scale(1.01); }

.card-icon-container {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    position: relative;
    transition: var(--transition-normal);
}

.card-icon {
    width: 22px;
    height: 22px;
    color: #94a3b8;
    transition: var(--transition-normal);
}

.modality-card:hover .card-icon-container {
    background: rgba(255, 255, 255, 0.04);
}

/* Modality Card color adaptations on hover */
.modality-card.card-glow-cyan:hover .card-icon { color: var(--neon-cyan); filter: drop-shadow(0 0 4px var(--neon-cyan)); }
.modality-card.card-glow-purple:hover .card-icon { color: var(--neon-purple); filter: drop-shadow(0 0 4px var(--neon-purple)); }
.modality-card.card-glow-pink:hover .card-icon { color: var(--neon-pink); filter: drop-shadow(0 0 4px var(--neon-pink)); }
.modality-card.card-glow-amber:hover .card-icon { color: var(--neon-amber); filter: drop-shadow(0 0 4px var(--neon-amber)); }

.card-title {
    font-size: 18px;
    color: #ffffff;
    margin-bottom: 12px;
}

.card-desc {
    font-size: 13.5px;
    color: #64748b;
    margin-bottom: 24px;
    line-height: 1.5;
}

.card-metric-hud {
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding-top: 16px;
    display: flex;
    gap: 20px;
}

.hud-cell {
    display: flex;
    flex-direction: column;
}

.hud-cell-lbl {
    font-family: var(--font-mono);
    font-size: 8px;
    color: #475569;
    letter-spacing: 0.5px;
}

.hud-cell-val {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: bold;
}

/* Absolute diagnostic corner borders */
.card-cyber-decoration .deco-corner {
    position: absolute;
    width: 6px;
    height: 6px;
    border-color: rgba(255, 255, 255, 0.15);
    border-style: solid;
    transition: var(--transition-normal);
}

.deco-corner.top-right {
    top: 12px;
    right: 12px;
    border-width: 1px 1px 0 0;
}

.deco-corner.bottom-left {
    bottom: 12px;
    left: 12px;
    border-width: 0 0 1px 1px;
}

.modality-card.card-glow-cyan:hover .deco-corner { border-color: var(--neon-cyan); }
.modality-card.card-glow-purple:hover .deco-corner { border-color: var(--neon-purple); }
.modality-card.card-glow-pink:hover .deco-corner { border-color: var(--neon-pink); }
.modality-card.card-glow-amber:hover .deco-corner { border-color: var(--neon-amber); }


/* --- 12. SIMULATORS SANDBOX PLAYGROUND --- */
.sandbox-content {
    max-width: 1200px;
}

.playground-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(460px, 1fr));
    gap: 32px;
    width: 100%;
}

.simulator-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-glow);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.simulator-card.card-glow-cyan { border-color: rgba(0, 242, 254, 0.1); }
.simulator-card.card-glow-purple { border-color: rgba(184, 39, 252, 0.1); }

.simulator-card.card-glow-cyan:hover { border-color: rgba(0, 242, 254, 0.3); }
.simulator-card.card-glow-purple:hover { border-color: rgba(184, 39, 252, 0.3); }

.sim-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.sim-badge {
    font-family: var(--font-mono);
    font-size: 8px;
    letter-spacing: 1px;
    padding: 2px 6px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 3px;
}

.sim-title {
    font-size: 16px;
    color: #ffffff;
    margin-top: 4px;
}

.sim-diagnostics {
    display: flex;
    gap: 16px;
    font-family: var(--font-mono);
    font-size: 11px;
}

/* Training visual fields */
.nn-visualizer-container,
.genetic-sandbox-container {
    width: 100%;
    height: 240px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    margin-bottom: 20px;
}

#nn-canvas,
#evolution-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Mathematical Graph Corner Overlays */
.nn-graph-overlay {
    position: absolute;
    bottom: 10px;
    right: 10px;
    width: 90px;
    height: 54px;
    background: rgba(5, 5, 10, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    padding: 4px;
    display: flex;
    flex-direction: column;
}

#nn-loss-graph {
    width: 100%;
    height: 38px;
    display: block;
}

.nn-graph-lbl {
    font-family: var(--font-mono);
    font-size: 7px;
    color: #475569;
    text-align: center;
    margin-top: 2px;
}

/* Genetic organisms diagnostic HUD overlays */
.gen-stats-overlay {
    position: absolute;
    bottom: 10px;
    left: 10px;
    background: rgba(5, 5, 10, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 6px;
    padding: 8px 12px;
    font-family: var(--font-mono);
    font-size: 9px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.gen-stat-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
}

.gen-stat-row .lbl { color: #64748b; }
.gen-stat-row .val { font-weight: bold; }

/* Control Widgets */
.sim-controls {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.control-row {
    display: flex;
    gap: 20px;
}

.control-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.control-lbl {
    font-family: var(--font-mono);
    font-size: 9px;
    color: #64748b;
    letter-spacing: 0.5px;
}

/* Cybernetic select options */
.cyber-select {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    padding: 8px 12px;
    color: #e2e8f0;
    font-family: var(--font-mono);
    font-size: 11px;
    outline: none;
    cursor: none;
    transition: var(--transition-fast);
}

.cyber-select:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.cyber-select option {
    background: var(--bg-dark);
    color: #e2e8f0;
}

/* Stepper adjustments */
.stepper-control {
    display: flex;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    overflow: hidden;
    max-width: 140px;
}

.step-btn {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: #64748b;
    font-size: 14px;
    font-weight: bold;
    cursor: none;
    transition: var(--transition-fast);
    padding: 6px 12px;
}

.step-btn:hover {
    background: rgba(255, 255, 255, 0.04);
    color: #ffffff;
}

.step-val {
    flex: 1.5;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: bold;
    color: #ffffff;
    border-left: 1px solid rgba(255, 255, 255, 0.05);
    border-right: 1px solid rgba(255, 255, 255, 0.05);
}

/* High-tech Slider designs */
.slider-container {
    display: flex;
    align-items: center;
    gap: 12px;
    height: 38px;
}

.cyber-slider {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255, 255, 255, 0.05);
    height: 4px;
    border-radius: 2px;
    outline: none;
    cursor: none;
}

.cyber-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    background: var(--neon-purple);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--neon-purple);
    transition: transform var(--transition-fast);
}

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

.slider-val {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: bold;
    width: 32px;
    text-align: right;
}


/* --- 13. CHRONOS SCROLL TIMELINE --- */
.timeline-wrapper {
    position: relative;
    max-width: 800px;
    margin: 40px auto 0;
    padding: 20px 0;
}

.timeline-line {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: rgba(255, 255, 255, 0.03);
}

.timeline-line-progress {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0; /* Dynamic scroll adjustment via JS */
    background: linear-gradient(to bottom, var(--neon-cyan), var(--neon-purple), var(--neon-pink));
    box-shadow: 0 0 10px var(--neon-cyan);
    transition: height 0.1s linear;
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: 0 40px;
    margin-bottom: 40px;
}

.timeline-item.left { left: 0; text-align: right; }
.timeline-item.right { left: 50%; text-align: left; }

.timeline-dot {
    position: absolute;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #1e293b;
    border: 2px solid rgba(255, 255, 255, 0.2);
    top: 16px;
    z-index: 5;
    transition: var(--transition-normal);
}

.timeline-item.left .timeline-dot { right: -6px; }
.timeline-item.right .timeline-dot { left: -6px; }

/* Timeline node activated by JS classes */
.timeline-item.active-node .timeline-dot {
    border-color: var(--neon-cyan);
    background: var(--neon-cyan);
    box-shadow: 0 0 12px var(--neon-cyan);
}

.timeline-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-glow);
    border-radius: 12px;
    padding: 20px;
    position: relative;
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    opacity: 0.3;
    transform: translateY(20px);
}

.timeline-item.active-node .timeline-card {
    opacity: 1;
    transform: translateY(0);
}

.timeline-item.left.active-node .timeline-card:hover { transform: translateX(-4px) scale(1.01); }
.timeline-item.right.active-node .timeline-card:hover { transform: translateX(4px) scale(1.01); }

.timeline-card.card-glow-cyan:hover { border-color: var(--neon-cyan); box-shadow: var(--glow-cyan); }
.timeline-card.card-glow-purple:hover { border-color: var(--neon-purple); box-shadow: var(--glow-purple); }
.timeline-card.card-glow-pink:hover { border-color: var(--neon-pink); box-shadow: var(--glow-pink); }
.timeline-card.card-glow-amber:hover { border-color: var(--neon-amber); box-shadow: var(--glow-amber); }

.timeline-year {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: bold;
    letter-spacing: 1px;
}

.timeline-title {
    font-size: 16px;
    color: #ffffff;
    margin: 4px 0 8px;
}

.timeline-desc {
    font-size: 13px;
    color: #64748b;
    line-height: 1.5;
}

/* Active node glow indicator bar inside card side */
.timeline-decor {
    position: absolute;
    top: 20px;
    bottom: 20px;
    width: 3px;
    background: transparent;
    border-radius: 2px;
    transition: var(--transition-normal);
}

.timeline-item.left .timeline-decor { right: 0; }
.timeline-item.right .timeline-decor { left: 0; }

.timeline-card.card-glow-cyan .timeline-decor { background: rgba(0, 242, 254, 0.4); }
.timeline-card.card-glow-purple .timeline-decor { background: rgba(184, 39, 252, 0.4); }
.timeline-card.card-glow-pink .timeline-decor { background: rgba(255, 0, 127, 0.4); }
.timeline-card.card-glow-amber .timeline-decor { background: rgba(243, 156, 18, 0.4); }


/* --- 14. CODEX KNOWLEDGE DATABASE --- */
.codex-layout {
    display: flex;
    gap: 32px;
    width: 100%;
}

.codex-sidebar {
    width: 280px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    flex-shrink: 0;
}

.codex-nav-btn {
    background: var(--bg-panel);
    border: 1px solid var(--border-glow);
    border-radius: 8px;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    color: #64748b;
    outline: none;
    cursor: none;
    transition: var(--transition-normal);
    text-align: left;
    backdrop-filter: blur(8px);
}

.btn-num {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: bold;
    color: #475569;
    transition: var(--transition-fast);
}

.btn-title {
    font-family: var(--font-header);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    transition: var(--transition-fast);
}

.codex-nav-btn:hover {
    border-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    background: rgba(255, 255, 255, 0.02);
}

/* Nav Button active accent colors on click */
.codex-nav-btn.active {
    background: rgba(0, 242, 254, 0.03);
    border-color: var(--neon-cyan);
    color: #ffffff;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.15);
}

.codex-nav-btn.active .btn-num { color: var(--neon-cyan); }
.codex-nav-btn.active:nth-child(2) { border-color: var(--neon-purple); background: rgba(184, 39, 252, 0.03); box-shadow: 0 0 15px rgba(184, 39, 252, 0.15); }
.codex-nav-btn.active:nth-child(2) .btn-num { color: var(--neon-purple); }
.codex-nav-btn.active:nth-child(3) { border-color: var(--neon-pink); background: rgba(255, 0, 127, 0.03); box-shadow: 0 0 15px rgba(255, 0, 127, 0.15); }
.codex-nav-btn.active:nth-child(3) .btn-num { color: var(--neon-pink); }
.codex-nav-btn.active:nth-child(4) { border-color: var(--neon-amber); background: rgba(243, 156, 18, 0.03); box-shadow: 0 0 15px rgba(243, 156, 18, 0.15); }
.codex-nav-btn.active:nth-child(4) .btn-num { color: var(--neon-amber); }

/* Document Display Box */
.codex-panel-wrap {
    flex-grow: 1;
    position: relative;
    height: 380px;
}

.codex-panel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-panel);
    border: 1px solid var(--border-glow);
    border-radius: 16px;
    padding: 32px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    opacity: 0;
    pointer-events: none;
    transform: scale(0.95) translateY(10px);
    transition: opacity var(--transition-normal), transform var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.codex-panel.active {
    opacity: 1;
    pointer-events: auto;
    transform: scale(1) translateY(0);
}

.panel-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 16px;
    margin-bottom: 20px;
}

.panel-tag {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 1px;
    color: #475569;
}

.panel-title {
    font-size: 20px;
    color: #ffffff;
    margin-top: 4px;
}

.panel-body {
    flex-grow: 1;
    overflow-y: auto;
}

.panel-para {
    font-size: 14px;
    color: #94a3b8;
    margin-bottom: 20px;
    line-height: 1.6;
}

/* Math block math syntax */
.panel-equation {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.02);
    border-radius: 8px;
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 15px;
    color: #ffffff;
    text-align: center;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.3);
}

.codex-panel.card-glow-cyan .panel-equation { border-left: 2px solid var(--neon-cyan); }
.codex-panel.card-glow-purple .panel-equation { border-left: 2px solid var(--neon-purple); }
.codex-panel.card-glow-pink .panel-equation { border-left: 2px solid var(--neon-pink); }
.codex-panel.card-glow-amber .panel-equation { border-left: 2px solid var(--neon-amber); }

.codex-panel.card-glow-cyan { border-color: rgba(0, 242, 254, 0.2); }
.codex-panel.card-glow-purple { border-color: rgba(184, 39, 252, 0.2); }
.codex-panel.card-glow-pink { border-color: rgba(255, 0, 127, 0.2); }
.codex-panel.card-glow-amber { border-color: rgba(243, 156, 18, 0.2); }

.codex-panel.card-glow-cyan.active { box-shadow: var(--glow-cyan); }
.codex-panel.card-glow-purple.active { box-shadow: var(--glow-purple); }
.codex-panel.card-glow-pink.active { box-shadow: var(--glow-pink); }
.codex-panel.card-glow-amber.active { box-shadow: var(--glow-amber); }

.panel-diagnostics {
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding-top: 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    font-family: var(--font-mono);
    font-size: 10px;
}

.p-diag span:nth-child(1) {
    color: #475569;
}
.p-diag span:nth-child(2) {
    font-weight: bold;
}


/* --- 15. PERSISTENT CYBER DIAGNOSTIC FOOTER --- */
.hud-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100vw;
    height: 38px;
    background: rgba(6, 7, 13, 0.9);
    border-top: 1px solid var(--border-glow);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 42px;
    font-family: var(--font-mono);
    font-size: 9.5px;
    color: #475569;
    letter-spacing: 0.5px;
    z-index: 100;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.term-status-dot {
    width: 6px;
    height: 6px;
    background: var(--neon-cyan);
    border-radius: 50%;
    animation: statusPulse 2s infinite;
    box-shadow: 0 0 6px var(--neon-cyan);
}

@keyframes statusPulse {
    0%, 100% { opacity: 0.3; transform: scale(0.9); }
    50% { opacity: 1; transform: scale(1.1); }
}

@keyframes pulseGlow {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.2); opacity: 1; box-shadow: 0 0 12px var(--neon-cyan); }
}


/* --- 16. STATIC NOISE GLITCH TEXT KEYFRAMES --- */
.glitch {
    position: relative;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    clip: rect(0, 0, 0, 0);
}

.glitch:hover::before {
    left: -2px;
    text-shadow: 2px 0 var(--neon-pink);
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim 5s infinite linear alternate-reverse;
}

.glitch:hover::after {
    left: 2px;
    text-shadow: -2px 0 var(--neon-cyan);
    clip: rect(85px, 450px, 140px, 0);
    animation: glitch-anim2 5s infinite linear alternate-reverse;
}

@keyframes glitch-anim {
    0% { clip: rect(31px, 9999px, 94px, 0); }
    10% { clip: rect(112px, 9999px, 76px, 0); }
    20% { clip: rect(85px, 9999px, 5px, 0); }
    30% { clip: rect(27px, 9999px, 115px, 0); }
    40% { clip: rect(73px, 9999px, 29px, 0); }
    50% { clip: rect(118px, 9999px, 133px, 0); }
    60% { clip: rect(9px, 9999px, 70px, 0); }
    70% { clip: rect(138px, 9999px, 40px, 0); }
    80% { clip: rect(54px, 9999px, 120px, 0); }
    90% { clip: rect(2px, 9999px, 98px, 0); }
    100% { clip: rect(95px, 9999px, 145px, 0); }
}

@keyframes glitch-anim2 {
    0% { clip: rect(76px, 9999px, 116px, 0); }
    11% { clip: rect(3px, 9999px, 42px, 0); }
    22% { clip: rect(122px, 9999px, 86px, 0); }
    33% { clip: rect(61px, 9999px, 131px, 0); }
    44% { clip: rect(5px, 9999px, 80px, 0); }
    55% { clip: rect(104px, 9999px, 24px, 0); }
    66% { clip: rect(40px, 9999px, 138px, 0); }
    77% { clip: rect(93px, 9999px, 52px, 0); }
    88% { clip: rect(119px, 9999px, 9px, 0); }
    100% { clip: rect(29px, 9999px, 115px, 0); }
}


/* --- 17. RESPONSIVE DESIGN & MEDIA QUERIES --- */
@media (max-width: 1024px) {
    .viewport-section {
        padding-left: 100px;
        padding-right: 4%;
    }
    
    .hud-nav {
        left: 20px;
    }
    
    .nav-label {
        display: none;
    }
    
    .playground-layout {
        grid-template-columns: 1fr;
    }
    
    .codex-layout {
        flex-direction: column;
    }
    
    .codex-sidebar {
        width: 100%;
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 8px;
    }
    
    .codex-nav-btn {
        flex-shrink: 0;
    }
    
    .codex-panel-wrap {
        height: 420px;
    }
}

@media (max-width: 768px) {
    body {
        cursor: default; /* Fallback to standard cursor on touch devices */
    }
    
    #cursor-dot, #cursor-ring {
        display: none;
    }
    
    .viewport-section {
        padding-left: 24px;
        padding-right: 24px;
        padding-top: 110px;
        height: auto;
        min-height: 100vh;
        scroll-snap-align: none;
    }
    
    .viewport-container {
        scroll-snap-type: none;
        overflow-y: auto;
    }
    
    .hud-header {
        top: 12px;
        left: 12px;
        right: 12px;
        padding: 0 16px;
    }
    
    .desktop-only {
        display: none !important;
    }
    
    .hud-nav {
        display: none;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-action-buttons {
        flex-direction: column;
        width: 100%;
        gap: 12px;
    }
    
    .btn {
        width: 100%;
    }
    
    .timeline-line {
        left: 20px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 45px;
        padding-right: 0;
        text-align: left !important;
    }
    
    .timeline-item.left .timeline-dot,
    .timeline-item.right .timeline-dot {
        left: 14px;
    }
    
    .timeline-item.left .timeline-decor {
        left: 0;
        right: auto;
    }
    
    .codex-sidebar {
        gap: 8px;
    }
    
    .codex-nav-btn {
        padding: 10px 14px;
    }
    
    .codex-panel {
        padding: 20px;
    }
    
    .panel-equation {
        font-size: 12px;
        padding: 12px;
    }
}