/* ==========================================================================
   PRISM — SPATIAL AI PORTFOLIO  ·  v2.0 Figma-Grade Redesign
   Noise Grain · Gradient Borders · Bento Cards · Animated Shimmer
   Premium Glass Layering · Token-Driven Theme System
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN TOKEN SYSTEM
   -------------------------------------------------------------------------- */

/* Theme: Titanium (default) */
body.theme-titanium {
    --hue: 220;
    --accent:       hsl(200, 80%, 60%);
    --accent-rgb:   56, 189, 248;
    --accent-sub:   hsl(240, 60%, 65%);
    --accent-sub-rgb: 110, 120, 230;
    --surface:      hsl(220, 20%, 5%);
    --surface-2:    hsl(220, 16%, 9%);
    --surface-3:    hsl(220, 14%, 13%);
    --surface-elevated: hsl(220, 16%, 11%);
    --text:         hsl(210, 40%, 96%);
    --text-muted:   hsl(215, 20%, 55%);
    --text-dim:     hsl(215, 14%, 34%);
    --border:       rgba(255, 255, 255, 0.07);
    --border-hover: rgba(56, 189, 248, 0.3);
    --glow-intensity: 0.16;
    --noise-opacity: 0.028;
    --card-bg: rgba(12, 14, 22, 0.72);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-border-hover: rgba(56, 189, 248, 0.45);
}

/* Theme: Onyx Gold */
body.theme-gold {
    --hue: 45;
    --accent:       hsl(48, 90%, 58%);
    --accent-rgb:   250, 204, 21;
    --accent-sub:   hsl(30, 80%, 55%);
    --accent-sub-rgb: 234, 120, 36;
    --surface:      hsl(38, 14%, 4%);
    --surface-2:    hsl(38, 12%, 8%);
    --surface-3:    hsl(38, 10%, 13%);
    --surface-elevated: hsl(38, 12%, 10%);
    --text:         hsl(50, 60%, 96%);
    --text-muted:   hsl(40, 12%, 55%);
    --text-dim:     hsl(40, 8%, 34%);
    --border:       rgba(250, 204, 21, 0.08);
    --border-hover: rgba(250, 204, 21, 0.35);
    --glow-intensity: 0.14;
    --noise-opacity: 0.025;
    --card-bg: rgba(14, 12, 8, 0.72);
    --card-border: rgba(250, 204, 21, 0.1);
    --card-border-hover: rgba(250, 204, 21, 0.45);
}

/* Theme: Cyber Emerald */
body.theme-emerald {
    --hue: 160;
    --accent:       hsl(158, 72%, 50%);
    --accent-rgb:   52, 211, 153;
    --accent-sub:   hsl(190, 80%, 50%);
    --accent-sub-rgb: 22, 189, 202;
    --surface:      hsl(160, 18%, 4%);
    --surface-2:    hsl(160, 14%, 8%);
    --surface-3:    hsl(160, 12%, 12%);
    --surface-elevated: hsl(160, 14%, 10%);
    --text:         hsl(150, 40%, 96%);
    --text-muted:   hsl(160, 14%, 55%);
    --text-dim:     hsl(160, 8%, 34%);
    --border:       rgba(52, 211, 153, 0.08);
    --border-hover: rgba(52, 211, 153, 0.35);
    --glow-intensity: 0.15;
    --noise-opacity: 0.024;
    --card-bg: rgba(8, 14, 12, 0.72);
    --card-border: rgba(52, 211, 153, 0.1);
    --card-border-hover: rgba(52, 211, 153, 0.45);
}

/* Theme: Deep Slate */
body.theme-slate {
    --hue: 210;
    --accent:       hsl(204, 90%, 62%);
    --accent-rgb:   56, 175, 248;
    --accent-sub:   hsl(240, 70%, 65%);
    --accent-sub-rgb: 120, 110, 230;
    --surface:      hsl(215, 22%, 4%);
    --surface-2:    hsl(215, 18%, 9%);
    --surface-3:    hsl(215, 15%, 13%);
    --surface-elevated: hsl(215, 18%, 11%);
    --text:         hsl(210, 50%, 97%);
    --text-muted:   hsl(215, 18%, 55%);
    --text-dim:     hsl(215, 12%, 34%);
    --border:       rgba(56, 175, 248, 0.08);
    --border-hover: rgba(56, 175, 248, 0.35);
    --glow-intensity: 0.15;
    --noise-opacity: 0.026;
    --card-bg: rgba(10, 12, 20, 0.72);
    --card-border: rgba(56, 175, 248, 0.1);
    --card-border-hover: rgba(56, 175, 248, 0.45);
}

/* Global tokens (never hard-coded values below this line) */
:root {
    /* Fonts */
    --font-display: 'Space Grotesk', sans-serif;
    --font-body:    'Inter', sans-serif;
    --font-mono:    'JetBrains Mono', monospace;

    /* Fluid Type Scale */
    --text-xs:   clamp(0.68rem, 0.62rem + 0.2vw, 0.78rem);
    --text-sm:   clamp(0.78rem, 0.72rem + 0.25vw, 0.88rem);
    --text-base: clamp(0.92rem, 0.86rem + 0.3vw, 1.05rem);
    --text-lg:   clamp(1.1rem,  1rem + 0.5vw,  1.3rem);
    --text-xl:   clamp(1.35rem, 1.15rem + 0.8vw, 1.75rem);
    --text-2xl:  clamp(1.7rem,  1.4rem + 1.2vw, 2.4rem);
    --text-3xl:  clamp(2.1rem,  1.6rem + 2vw,   3.2rem);
    --text-hero: clamp(3rem,    2rem + 4vw,     6rem);

    /* Spacing */
    --sp-1: 0.25rem;
    --sp-2: 0.5rem;
    --sp-3: 0.75rem;
    --sp-4: 1rem;
    --sp-5: 1.5rem;
    --sp-6: 2rem;
    --sp-8: 3rem;
    --sp-10: 4rem;
    --sp-section: clamp(4.5rem, 8vw, 9rem);

    /* Radii */
    --radius-sm:  6px;
    --radius-md:  10px;
    --radius-lg:  16px;
    --radius-xl:  24px;
    --radius-2xl: 28px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm:   0 1px 3px rgba(0,0,0,0.4);
    --shadow-md:   0 4px 16px rgba(0,0,0,0.35);
    --shadow-lg:   0 12px 40px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 28px rgba(var(--accent-rgb), 0.25);
    --shadow-inset: inset 0 1px 0 rgba(255,255,255,0.05);

    /* Transitions */
    --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in:    cubic-bezier(0.55, 0, 1, 0.45);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --t-fast:   0.18s var(--ease-out);
    --t-med:    0.35s var(--ease-out);
    --t-slow:   0.6s  var(--ease-out);
}

/* --------------------------------------------------------------------------
   2. RESET & BASE
   -------------------------------------------------------------------------- */

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    color-scheme: dark;
}

body {
    background-color: var(--surface);
    color: var(--text);
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    transition: background-color 0.5s var(--ease-smooth), color 0.3s var(--ease-smooth);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Noise grain texture overlay — instant premium feel */
.noise-overlay {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: var(--noise-opacity);
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}

::selection {
    background: rgba(var(--accent-rgb), 0.3);
    color: var(--text);
}

/* Scrollbar */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(var(--accent-rgb), 0.25); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(var(--accent-rgb), 0.5); }

/* --------------------------------------------------------------------------
   3. AMBIENT BACKGROUND SYSTEM (Glass needs orbs to refract)
   -------------------------------------------------------------------------- */

#bg-canvas {
    position: fixed;
    inset: 0;
    z-index: -3;
    pointer-events: none;
}

.grid-overlay {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 56px 56px;
    z-index: -2;
    pointer-events: none;
    mask-image: radial-gradient(ellipse at 50% 40%, black 30%, transparent 80%);
}

.ambient-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(140px);
    z-index: -1;
    pointer-events: none;
    will-change: transform, filter;
}

.glow-1 {
    width: 750px;
    height: 750px;
    top: -18%;
    right: -8%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), var(--glow-intensity)), transparent 70%);
    animation: drift-a 20s ease-in-out infinite, hue-shift-a 30s linear infinite;
}

.glow-2 {
    width: 550px;
    height: 550px;
    bottom: -12%;
    left: -6%;
    background: radial-gradient(circle, rgba(var(--accent-sub-rgb), calc(var(--glow-intensity) * 0.7)), transparent 70%);
    animation: drift-b 24s ease-in-out infinite, hue-shift-b 35s linear infinite;
}

.glow-3 {
    width: 400px;
    height: 400px;
    top: 40%;
    left: 30%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), calc(var(--glow-intensity) * 0.5)), transparent 70%);
    animation: drift-c 28s ease-in-out infinite;
}

@keyframes drift-a {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33%       { transform: translate(-45px, 35px) scale(1.1); }
    66%       { transform: translate(35px, -25px) scale(0.94); }
}

@keyframes drift-b {
    0%, 100% { transform: translate(0, 0) scale(1); }
    40%       { transform: translate(55px, -45px) scale(1.06); }
    70%       { transform: translate(-35px, 30px) scale(0.96); }
}

@keyframes drift-c {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50%       { transform: translate(-30px, -50px) scale(1.12); }
}

@keyframes hue-shift-a {
    0%   { filter: blur(140px) hue-rotate(0deg); }
    100% { filter: blur(140px) hue-rotate(15deg); }
}

@keyframes hue-shift-b {
    0%   { filter: blur(140px) hue-rotate(0deg); }
    100% { filter: blur(140px) hue-rotate(-12deg); }
}

/* Hologram scan beam */
.hologram-scanner-beam {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(var(--accent-rgb), 0.8), transparent);
    box-shadow: 0 0 12px rgba(var(--accent-rgb), 0.6);
    z-index: 99;
    pointer-events: none;
    animation: laserScan 5s linear infinite;
}

.hologram-scanner-beam.hidden { display: none !important; }

@keyframes laserScan {
    0%   { top: 0%;   opacity: 0.7; }
    48%  { opacity: 0.7; }
    50%  { top: 100%; opacity: 0.3; }
    52%  { opacity: 0; }
    100% { top: 0%;   opacity: 0; }
}

/* Status pulse dot */
.status-indicator {
    width: 7px;
    height: 7px;
    background: hsl(142, 71%, 55%);
    border-radius: 50%;
    box-shadow: 0 0 0 2px rgba(74, 222, 128, 0.2);
    animation: pulse-status 2.4s ease-in-out infinite;
    flex-shrink: 0;
}

@keyframes pulse-status {
    0%, 100% { box-shadow: 0 0 0 2px rgba(74, 222, 128, 0.2), 0 0 8px rgba(74, 222, 128, 0.4); }
    50%       { box-shadow: 0 0 0 5px rgba(74, 222, 128, 0.0), 0 0 18px rgba(74, 222, 128, 0.6); }
}

/* --------------------------------------------------------------------------
   4. SCROLL REVEAL SYSTEM
   -------------------------------------------------------------------------- */

[data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
[data-reveal].revealed { opacity: 1; transform: translateY(0); }
[data-reveal="left"]  { transform: translateX(-36px); }
[data-reveal="left"].revealed  { transform: translateX(0); }
[data-reveal="right"] { transform: translateX(36px); }
[data-reveal="right"].revealed { transform: translateX(0); }
[data-reveal="scale"] { transform: scale(0.9); }
[data-reveal="scale"].revealed { transform: scale(1); }
[data-reveal="blur"]  { filter: blur(12px); transform: translateY(8px); opacity: 0; }
[data-reveal="blur"].revealed  { filter: blur(0); transform: translateY(0); opacity: 1; }

[data-reveal-stagger].revealed > * {
    opacity: 0;
    animation: fadeUpItem 0.55s var(--ease-out) forwards;
}
[data-reveal-stagger].revealed > *:nth-child(1) { animation-delay: 0ms; }
[data-reveal-stagger].revealed > *:nth-child(2) { animation-delay: 90ms; }
[data-reveal-stagger].revealed > *:nth-child(3) { animation-delay: 180ms; }
[data-reveal-stagger].revealed > *:nth-child(4) { animation-delay: 270ms; }
[data-reveal-stagger].revealed > *:nth-child(5) { animation-delay: 360ms; }
[data-reveal-stagger].revealed > *:nth-child(6) { animation-delay: 450ms; }

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

@media (prefers-reduced-motion: reduce) {
    [data-reveal], [data-reveal-stagger].revealed > * {
        opacity: 1; transform: none; filter: none;
        transition: none; animation: none;
    }
}

/* --------------------------------------------------------------------------
   5. LAYOUT
   -------------------------------------------------------------------------- */

.main-layout {
    max-width: 1440px;
    margin: 0 auto;
    padding: var(--sp-6) clamp(1rem, 4vw, 2.5rem);
}

/* --------------------------------------------------------------------------
   6. NAVIGATION HEADER
   -------------------------------------------------------------------------- */

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-4);
    padding: 1rem clamp(1rem, 3vw, 2rem);
    background: rgba(var(--surface), 0.0);
    background-color: rgba(5, 6, 10, 0.7);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 200;
    transition: border-color 0.4s var(--ease-smooth), background-color 0.4s var(--ease-smooth);
}

.app-header.scrolled {
    background-color: rgba(5, 6, 10, 0.92);
    border-bottom-color: var(--border-hover);
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: rgba(var(--accent-rgb), 0.1);
    border: 1px solid rgba(var(--accent-rgb), 0.2);
    color: var(--accent);
    filter: drop-shadow(0 0 8px rgba(var(--accent-rgb), 0.35));
    transition: var(--t-med);
}

.brand-logo:hover .logo-icon {
    background: rgba(var(--accent-rgb), 0.18);
    filter: drop-shadow(0 0 14px rgba(var(--accent-rgb), 0.5));
}

.brand-text .title {
    display: block;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.01em;
    color: var(--text);
}

.accent-dot { color: var(--accent); }

.brand-text .subtitle {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-dim);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    background: rgba(255, 255, 255, 0.025);
    padding: 0.3rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.nav-link {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--t-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.nav-link.active {
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.1);
    border: 1px solid rgba(var(--accent-rgb), 0.2);
}

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

/* Copilot Trigger */
.command-trigger-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 0.45rem 0.8rem;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--t-fast);
    white-space: nowrap;
}

.command-trigger-btn:hover {
    background: rgba(255,255,255,0.07);
    border-color: rgba(var(--accent-rgb), 0.3);
    color: var(--text);
}

.command-trigger-btn kbd {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    padding: 0.1rem 0.3rem;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-dim);
}

.theme-dropdown {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 0.45rem 0.7rem;
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    cursor: pointer;
    transition: var(--t-fast);
}

.theme-dropdown:hover { border-color: var(--border-hover); color: var(--text); }
.theme-dropdown option { background: #0a0b10; color: var(--text); }

.icon-btn {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    color: var(--text-muted);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--t-fast);
    flex-shrink: 0;
}

.icon-btn:hover {
    color: var(--accent);
    border-color: rgba(var(--accent-rgb), 0.4);
    background: rgba(var(--accent-rgb), 0.08);
}

/* --------------------------------------------------------------------------
   7. BUTTONS
   -------------------------------------------------------------------------- */

.primary-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.6rem 1.25rem;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: var(--text-sm);
    color: var(--surface);
    background: var(--accent);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform 0.18s var(--ease-out), box-shadow 0.25s var(--ease-out);
    text-decoration: none;
}

.primary-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 60%);
    pointer-events: none;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(var(--accent-rgb), 0.4), var(--shadow-inset);
}

.primary-btn:active { transform: translateY(0) scale(0.98); }

.glow-btn {
    box-shadow: 0 0 0 0 rgba(var(--accent-rgb), 0);
    transition: transform 0.18s var(--ease-out), box-shadow 0.35s var(--ease-out);
}

.glow-btn:hover { box-shadow: 0 0 28px rgba(var(--accent-rgb), 0.45); }

.secondary-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.6rem 1.25rem;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--text-sm);
    color: var(--text);
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--t-fast);
    text-decoration: none;
}

.secondary-btn:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(var(--accent-rgb), 0.3);
    transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   8. GLASS CARD LEVELS
   -------------------------------------------------------------------------- */

/* L1 — Subtle: nav bars, inputs */
.glass-1 {
    background: rgba(255,255,255,0.025);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border);
}

/* L2 — Standard: cards, panels */
.glass-panel {
    background: rgba(255,255,255,0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-inset), var(--shadow-md);
    border-radius: var(--radius-xl);
}

/* L3 — Prominent: modals */
.glass-3 {
    background: rgba(255,255,255,0.07);
    backdrop-filter: blur(32px);
    -webkit-backdrop-filter: blur(32px);
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: var(--shadow-inset), var(--shadow-lg);
}

/* --------------------------------------------------------------------------
   9. HERO SECTION
   -------------------------------------------------------------------------- */

.hero-section {
    text-align: center;
    max-width: 860px;
    margin: 0 auto var(--sp-section);
    padding-top: var(--sp-10);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.35rem 1rem;
    background: rgba(var(--accent-rgb), 0.06);
    border: 1px solid rgba(var(--accent-rgb), 0.18);
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 1.6rem;
    animation: fadeUpItem 0.7s var(--ease-out) both;
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--text-hero);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: var(--text);
    margin-bottom: 1.5rem;
    animation: fadeUpItem 0.7s var(--ease-out) 0.12s both;
}

.gradient-text {
    background: linear-gradient(
        135deg,
        hsl(var(--hue), 85%, 72%),
        hsl(calc(var(--hue) + 30), 80%, 62%),
        hsl(calc(var(--hue) + 60), 75%, 68%),
        hsl(var(--hue), 85%, 72%)
    );
    background-size: 300% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer-gradient 6s ease-in-out infinite;
}

@keyframes shimmer-gradient {
    0%, 100% { background-position: 0% 50%; }
    50%      { background-position: 100% 50%; }
}

.hero-description {
    color: var(--text-muted);
    font-size: var(--text-lg);
    line-height: 1.7;
    margin-bottom: var(--sp-8);
    max-width: 640px;
    margin-inline: auto;
    animation: fadeUpItem 0.7s var(--ease-out) 0.24s both;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-6);
    background: rgba(var(--accent-rgb), 0.04);
    border: 1px solid rgba(var(--accent-rgb), 0.15);
    backdrop-filter: blur(20px);
    padding: 1.25rem 2.8rem;
    border-radius: var(--radius-full);
    width: fit-content;
    margin: 0 auto;
    animation: fadeUpItem 0.7s var(--ease-out) 0.36s both;
    box-shadow: 0 0 40px rgba(var(--accent-rgb), 0.06), inset 0 1px 0 rgba(255,255,255,0.06);
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
}

.stat-value {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--text);
    line-height: 1;
}

.stat-label {
    font-size: var(--text-xs);
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.stat-divider {
    width: 1px;
    height: 32px;
    background: linear-gradient(180deg, transparent, var(--border), transparent);
}

/* --------------------------------------------------------------------------
   10. TECH STACK MATRIX
   -------------------------------------------------------------------------- */

.skill-web-section {
    margin-bottom: var(--sp-5);
    padding: 1.1rem 1.5rem;
    border-radius: var(--radius-lg);
    animation: fadeUpItem 0.6s var(--ease-out) 0.45s both;
}

.skill-web-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.9rem;
}

.skill-web-header h3 {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-hint {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-dim);
}

.skill-pills-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.skill-matrix-tag {
    background: rgba(255,255,255,0.025);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    padding: 0.28rem 0.65rem;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--t-fast);
}

.skill-matrix-tag:hover {
    border-color: rgba(var(--accent-rgb), 0.4);
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.06);
    transform: translateY(-2px);
}

.skill-matrix-tag.active {
    background: rgba(var(--accent-rgb), 0.12);
    border-color: rgba(var(--accent-rgb), 0.45);
    color: var(--accent);
    font-weight: 600;
}

/* --------------------------------------------------------------------------
   11. CONTROLS TOOLBAR
   -------------------------------------------------------------------------- */

.controls-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-4);
    padding: 0.85rem 1.25rem;
    border-radius: var(--radius-lg);
    margin-bottom: var(--sp-6);
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 240px;
}

.search-icon {
    position: absolute;
    left: 0.9rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-dim);
    display: flex;
    pointer-events: none;
}

.search-box input {
    width: 100%;
    background: rgba(255,255,255,0.025);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.6rem 2.4rem 0.6rem 2.6rem;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    transition: var(--t-fast);
}

.search-box input:focus {
    outline: none;
    border-color: rgba(var(--accent-rgb), 0.45);
    background: rgba(255,255,255,0.045);
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.1);
}

.search-box input::placeholder { color: var(--text-dim); }

.clear-btn {
    position: absolute;
    right: 0.7rem;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    display: flex;
    padding: 0.2rem;
    transition: var(--t-fast);
}

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

/* Engineering filter pills */
.engineering-filter-group {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    flex-wrap: wrap;
}

.filter-label {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-dim);
    white-space: nowrap;
}

.eng-filter-pill {
    background: rgba(255,255,255,0.025);
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-size: var(--text-xs);
    cursor: pointer;
    transition: var(--t-fast);
    white-space: nowrap;
}

.eng-filter-pill:hover { color: var(--text); background: rgba(255,255,255,0.06); }

.eng-filter-pill.active {
    background: rgba(var(--accent-rgb), 0.12);
    border-color: rgba(var(--accent-rgb), 0.4);
    color: var(--accent);
    font-weight: 600;
}

/* --------------------------------------------------------------------------
   12. BENTO PROJECT CARDS GRID
   -------------------------------------------------------------------------- */

.stage-viewport {
    perspective: 1400px;
    min-height: 480px;
    position: relative;
}

/* Bento grid: featured first card spans 2 cols */
.spatial-cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--sp-5);
    transform-style: preserve-3d;
    transition: transform 0.6s var(--ease-out);
}

/* Featured first card spans full width */
.spatial-card:first-child {
    grid-column: 1 / -1;
}

.spatial-card:first-child .card-media-box {
    height: 280px;
}

.spatial-card:first-child .card-title {
    font-size: 1.35rem;
}

/* 3D spatial offsets removed — tilt is now driven purely by JS CSS vars */
.view-grid .spatial-cards-container,
.view-grid .spatial-card { transform: none !important; }

.view-timeline .spatial-cards-container {
    display: flex;
    flex-direction: column;
    gap: var(--sp-4);
}

.view-timeline .spatial-card {
    transform: none !important;
    flex-direction: row;
    align-items: center;
}

.view-timeline .card-media-box {
    width: 220px;
    height: 130px;
    flex-shrink: 0;
}

/* Project Card — Premium Bento Card with Gradient Border */
.spatial-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 18px;
    overflow: hidden;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: transform 0.3s var(--ease-out),
                border-color 0.3s ease,
                box-shadow 0.4s ease;
    transform: translateZ(0);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

/* Shine sweep effect on hover */
.spatial-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        105deg,
        transparent 40%,
        rgba(255, 255, 255, 0.04) 45%,
        rgba(255, 255, 255, 0.08) 50%,
        rgba(255, 255, 255, 0.04) 55%,
        transparent 60%
    );
    transform: translateX(-100%);
    transition: transform 0.7s var(--ease-out);
    z-index: 3;
    pointer-events: none;
    border-radius: inherit;
}

.spatial-card:hover::before {
    transform: translateX(100%);
}

.spatial-card:hover {
    transform: translateY(-6px);
    border-color: var(--card-border-hover);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5),
                0 0 0 1px rgba(var(--accent-rgb), 0.15),
                0 0 30px rgba(var(--accent-rgb), 0.08);
}

/* Focus-visible for accessibility */
.spatial-card:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

.card-media-box {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: var(--surface-2);
}

.card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s var(--ease-smooth), filter 0.5s var(--ease-out);
    filter: brightness(0.9) contrast(1.06) saturate(1.05);
}

.spatial-card:hover .card-image {
    transform: scale(1.05);
    filter: brightness(1) contrast(1.1) saturate(1.1);
}

/* Card media gradient overlay */
.card-media-box::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, rgba(12, 14, 22, 0.95), transparent);
    pointer-events: none;
}

.card-category-badge {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    background: rgba(6, 8, 14, 0.85);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 600;
    padding: 0.25rem 0.65rem;
    border-radius: 8px;
    letter-spacing: 0.03em;
    z-index: 2;
}

.card-date-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: rgba(6, 8, 14, 0.85);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    padding: 0.25rem 0.65rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    z-index: 2;
}

/* Engineering badge moved to card body for cleaner thumbnails */
.card-eng-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    background: rgba(var(--accent-rgb), 0.08);
    border: 1px solid rgba(var(--accent-rgb), 0.2);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.66rem;
    font-weight: 600;
    padding: 0.2rem 0.55rem;
    border-radius: 6px;
    width: fit-content;
    margin-bottom: 0.5rem;
}

.card-body {
    padding: 1.25rem 1.3rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.015em;
    line-height: 1.3;
    margin-bottom: 0.45rem;
    color: var(--text);
    transition: color 0.25s ease;
}

.spatial-card:hover .card-title { color: var(--accent); }

.card-usecase {
    font-size: 0.76rem;
    color: var(--accent);
    font-family: var(--font-mono);
    margin-bottom: 0.6rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    opacity: 0.85;
}

.card-summary {
    color: var(--text-muted);
    font-size: 0.84rem;
    line-height: 1.55;
    margin-bottom: 0.85rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-commit-box {
    margin: 0.4rem 0 0.85rem 0;
    padding: 0.45rem 0.65rem;
    background: rgba(0, 0, 0, 0.35);
    border-left: 3px solid var(--accent);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.card-footer {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    padding-top: 0.75rem;
    gap: 0.5rem;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
}

.tech-tag {
    background: rgba(255, 255, 255, 0.035);
    border: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text-muted);
    font-size: 0.68rem;
    font-family: var(--font-mono);
    padding: 0.18rem 0.45rem;
    border-radius: 5px;
    transition: all 0.2s ease;
}

.tech-tag:hover {
    border-color: rgba(var(--accent-rgb), 0.4);
    color: var(--accent);
}

/* Card Actions Bar */
.card-actions-bar {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.card-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.7rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    border-radius: 6px;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    border: none;
    line-height: 1;
}

.card-btn:hover {
    transform: scale(1.05);
}

.card-btn.primary {
    background: var(--accent);
    color: var(--surface);
}

.card-btn.primary:hover {
    filter: brightness(1.15);
    box-shadow: 0 0 18px rgba(var(--accent-rgb), 0.5);
}

.card-btn.secondary {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--text);
}

.card-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(var(--accent-rgb), 0.3);
}

.card-btn.yt {
    background: rgba(239, 68, 68, 0.14);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.card-btn.yt:hover {
    background: rgba(239, 68, 68, 0.3);
    color: #ffffff;
    box-shadow: 0 0 16px rgba(239, 68, 68, 0.35);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--sp-10) var(--sp-6);
    color: var(--text-dim);
}

.empty-icon { display: inline-flex; margin-bottom: var(--sp-4); opacity: 0.4; }
.empty-state h3 { font-family: var(--font-display); font-size: var(--text-xl); margin-bottom: 0.5rem; color: var(--text-muted); }
.empty-state p { font-size: var(--text-sm); margin-bottom: var(--sp-4); }

/* --------------------------------------------------------------------------
   13. FLOATING HUD
   -------------------------------------------------------------------------- */

.floating-hud {
    position: fixed;
    bottom: 1.75rem;
    right: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    z-index: 99;
}

.hud-btn {
    background: rgba(5, 6, 10, 0.85);
    border: 1px solid var(--border-hover);
    color: var(--text-muted);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.5);
    transition: var(--t-med);
    text-decoration: none;
}

.hud-btn:hover {
    transform: translateY(-3px) scale(1.1);
    border-color: rgba(var(--accent-rgb), 0.6);
    color: var(--accent);
    box-shadow: 0 0 20px rgba(var(--accent-rgb), 0.3), 0 4px 20px rgba(0,0,0,0.5);
}

/* --------------------------------------------------------------------------
   14. HACKATHON SHOWCASE SECTION
   -------------------------------------------------------------------------- */

.hackathon-showcase-section {
    margin-top: var(--sp-section);
    padding-top: var(--sp-6);
    border-top: 1px solid var(--border);
}

.hackathon-header {
    max-width: 720px;
    margin-bottom: var(--sp-6);
}

.hackathon-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(250, 204, 21, 0.08);
    border: 1px solid rgba(250, 204, 21, 0.25);
    color: hsl(48, 90%, 62%);
    padding: 0.28rem 0.8rem;
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    margin-bottom: 0.9rem;
}

.hackathon-header h2 {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--text);
    margin-bottom: 0.65rem;
}

.hackathon-header p {
    color: var(--text-muted);
    font-size: var(--text-base);
    line-height: 1.65;
}

.hackathon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--sp-5);
}

.hackathon-card {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out), border-color 0.3s var(--ease-out);
    position: relative;
    overflow: hidden;
}

/* Accent glow corner */
.hackathon-card::after {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(250, 204, 21, 0.08), transparent 70%);
    pointer-events: none;
}

.hackathon-card:hover {
    transform: translateY(-5px);
    border-color: rgba(250, 204, 21, 0.3);
    box-shadow: 0 0 0 1px rgba(250, 204, 21, 0.1), 0 16px 48px rgba(0,0,0,0.4);
}

.hackathon-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.sub-badge {
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;
    padding: 0.18rem 0.55rem;
    border-radius: var(--radius-sm);
    letter-spacing: 0.04em;
}

.sub-badge.alt {
    background: rgba(168, 85, 247, 0.1);
    color: hsl(270, 80%, 70%);
}

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

.hackathon-card h3 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 0.55rem;
    line-height: 1.2;
}

.hackathon-card > p {
    color: var(--text-muted);
    font-size: var(--text-sm);
    line-height: 1.6;
    margin-bottom: 1.35rem;
    flex: 1;
}

.hackathon-actions {
    display: flex;
    gap: 0.65rem;
    flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   15. DEVELOPER SKILL EVOLUTION QUEST TREE
   -------------------------------------------------------------------------- */

.skills-quest-section {
    margin-top: var(--sp-section);
    padding-top: var(--sp-6);
    border-top: 1px solid var(--border);
}

.skills-quest-header {
    margin-bottom: var(--sp-5);
}

.skills-quest-header h3 {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.65rem;
    margin-bottom: 0.4rem;
    line-height: 1.15;
}

.skills-quest-header p {
    color: var(--text-muted);
    font-size: var(--text-sm);
}

.quest-tree-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
    gap: var(--sp-5);
}

.quest-card {
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    transition: var(--t-med);
}

.quest-card.unlocked {
    background: rgba(52, 211, 153, 0.03);
    border: 1px solid rgba(52, 211, 153, 0.15);
}

.quest-card.unlocked:hover {
    border-color: rgba(52, 211, 153, 0.3);
    box-shadow: 0 0 24px rgba(52, 211, 153, 0.06);
}

.quest-card.locked {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border);
    opacity: 0.7;
}

.quest-status-header { margin-bottom: 1.2rem; }

.quest-badge {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.22rem 0.7rem;
    border-radius: var(--radius-full);
}

.quest-badge.unlocked {
    background: rgba(52, 211, 153, 0.1);
    color: hsl(160, 72%, 55%);
    border: 1px solid rgba(52, 211, 153, 0.2);
}

.quest-badge.locked {
    background: rgba(255,255,255,0.04);
    color: var(--text-dim);
    border: 1px solid var(--border);
}

.quest-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.quest-list li {
    border-left: 2px solid rgba(255,255,255,0.06);
    padding-left: 0.9rem;
    transition: border-color 0.2s var(--ease-out);
}

.quest-card.unlocked .quest-list li {
    border-left-color: rgba(52, 211, 153, 0.3);
}

.quest-card.unlocked .quest-list li:hover {
    border-left-color: rgba(52, 211, 153, 0.7);
}

.quest-item-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.22rem;
}

.quest-item-title strong {
    color: var(--text);
    font-size: var(--text-sm);
    font-weight: 600;
}

.level-pill {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--accent);
    padding: 0.12rem 0.45rem;
    border-radius: 4px;
    white-space: nowrap;
    flex-shrink: 0;
}

.level-pill.locked {
    background: rgba(255,255,255,0.04);
    color: var(--text-dim);
}

.quest-list p {
    color: var(--text-muted);
    font-size: var(--text-xs);
    line-height: 1.5;
    margin: 0;
}

/* --------------------------------------------------------------------------
   16. MODAL SYSTEM
   -------------------------------------------------------------------------- */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--sp-5);
    opacity: 1;
    transition: opacity 0.25s var(--ease-smooth);
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-card {
    position: relative;
    width: 100%;
    max-width: 870px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: rgba(12, 14, 22, 0.95);
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 0 0 1px rgba(255,255,255,0.04),
                0 30px 70px rgba(0,0,0,0.7),
                0 0 60px rgba(var(--accent-rgb), 0.04);
    backdrop-filter: blur(32px);
    -webkit-backdrop-filter: blur(32px);
    border-radius: var(--radius-xl);
    animation: modalEntrance 0.4s var(--ease-out) both;
}

@keyframes modalEntrance {
    from { opacity: 0; transform: translateY(24px) scale(0.96); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.close-modal-btn {
    position: absolute;
    top: 1.1rem;
    right: 1.1rem;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    color: var(--text-dim);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--t-fast);
    z-index: 20;
}

.close-modal-btn:hover {
    color: var(--text);
    background: rgba(255,255,255,0.09);
    border-color: rgba(255,255,255,0.15);
    transform: rotate(90deg);
}

/* Detail Card */
.detail-header {
    padding: 1.75rem 1.75rem 1.1rem;
    border-bottom: 1px solid var(--border);
}

.detail-badge-group {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    margin-bottom: 0.65rem;
}

.category-badge {
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(var(--accent-rgb), 0.2);
    letter-spacing: 0.04em;
}

.date-badge {
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.detail-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 800;
    letter-spacing: -0.025em;
    line-height: 1.15;
    color: var(--text);
    margin-bottom: 0.35rem;
}

.detail-subtitle {
    color: var(--text-muted);
    font-size: var(--text-sm);
    line-height: 1.6;
}

/* Tab System */
.modal-tabs {
    display: flex;
    gap: 0.15rem;
    padding: 0.6rem 1.75rem;
    border-bottom: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.15);
    overflow-x: auto;
}

.tab-btn {
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-dim);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 500;
    padding: 0.55rem 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--t-fast);
    white-space: nowrap;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

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

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

.modal-body-scroll {
    padding: 1.5rem 1.75rem;
    overflow-y: auto;
    flex: 1;
}

.modal-body-scroll::-webkit-scrollbar { width: 3px; }
.modal-body-scroll::-webkit-scrollbar-thumb { background: rgba(var(--accent-rgb), 0.2); border-radius: 3px; }

.tab-content { display: none; }

.tab-content.active {
    display: block;
    animation: tabIn 0.28s var(--ease-out) both;
}

@keyframes tabIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Modal inner components */
.preview-hero-box {
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 1.25rem;
    border: 1px solid var(--border);
    height: 220px;
    background: var(--surface-2);
}

.modal-preview-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.85);
}

.info-section {
    margin-bottom: 1.35rem;
    padding-bottom: 1.35rem;
    border-bottom: 1px solid var(--border);
}

.info-section:last-child { border-bottom: none; }

.info-section h4 {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.07em;
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.highlight-text-box {
    background: rgba(var(--accent-rgb), 0.04);
    border: 1px solid rgba(var(--accent-rgb), 0.1);
    border-radius: var(--radius-md);
    padding: 0.85rem 1rem;
    color: var(--text);
    font-size: var(--text-sm);
    line-height: 1.6;
}

.workflow-steps {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.workflow-step {
    display: flex;
    gap: 0.9rem;
    align-items: flex-start;
}

.step-num {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.1);
    border: 1px solid rgba(var(--accent-rgb), 0.2);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-weight: 700;
}

.step-text {
    color: var(--text);
    font-size: var(--text-sm);
    line-height: 1.55;
    padding-top: 0.35rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.65rem;
}

.feature-chip {
    background: rgba(255,255,255,0.025);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 0.7rem 0.9rem;
    font-size: var(--text-xs);
    color: var(--text-muted);
    font-family: var(--font-mono);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--t-fast);
}

.feature-chip:hover {
    border-color: rgba(var(--accent-rgb), 0.25);
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.04);
}

.luna-notice-box {
    background: linear-gradient(135deg,
        rgba(var(--accent-rgb), 0.05) 0%,
        rgba(var(--accent-sub-rgb), 0.03) 100%
    );
    border: 1px solid rgba(var(--accent-rgb), 0.15);
    border-radius: var(--radius-md);
    padding: 0.9rem 1.1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    margin-top: 0.75rem;
}

.luna-notice-box p {
    color: var(--text-muted);
    font-size: var(--text-xs);
    line-height: 1.55;
}

.luna-notice-box svg { flex-shrink: 0; color: var(--accent); margin-top: 1px; }

.tech-stack-detail {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tech-tag-lg {
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    padding: 0.28rem 0.65rem;
    border-radius: var(--radius-sm);
    transition: var(--t-fast);
}

.tech-tag-lg:hover {
    border-color: rgba(var(--accent-rgb), 0.3);
    color: var(--accent);
}

/* GitHub Pages embed */
.ghpages-embed {
    width: 100%;
    height: 420px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--surface-2);
}

/* Copilot Modal */
.cmd-card { max-width: 580px; }

.cmd-input-wrapper {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-muted);
}

.cmd-input-wrapper input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    font-family: var(--font-mono);
    font-size: var(--text-base);
    color: var(--text);
    caret-color: var(--accent);
}

.cmd-input-wrapper input::placeholder { color: var(--text-dim); }

.cmd-suggestions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.45rem;
    padding: 0.9rem 1.5rem;
    border-bottom: 1px solid var(--border);
}

.suggestion-label {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-dim);
}

.cmd-chip {
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--t-fast);
}

.cmd-chip:hover {
    border-color: rgba(var(--accent-rgb), 0.4);
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.06);
}

.cmd-output-box {
    padding: 1.1rem 1.5rem;
    min-height: 100px;
    max-height: 260px;
    overflow-y: auto;
}

.cmd-response-text {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-muted);
    line-height: 1.7;
    white-space: pre-wrap;
}

/* Add Project Modal */
.add-card { max-width: 680px; }

.modal-header {
    padding: 1.5rem 1.75rem 1rem;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.modal-header p {
    color: var(--text-muted);
    font-size: var(--text-sm);
}

.add-form {
    padding: 1.25rem 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    overflow-y: auto;
    max-height: calc(90vh - 200px);
}

.form-row {
    display: grid;
    gap: 0.9rem;
}

.form-row.duo { grid-template-columns: 1fr 1fr; }

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.form-group label {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-muted);
    font-family: var(--font-body);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea,
.form-group select {
    background: rgba(255,255,255,0.025);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.6rem 0.85rem;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    transition: var(--t-fast);
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: rgba(var(--accent-rgb), 0.5);
    background: rgba(255,255,255,0.04);
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.08);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-dim); }

.form-group select option { background: #0a0b14; }

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.65rem;
    padding: 1rem 1.75rem;
    border-top: 1px solid var(--border);
    background: rgba(0,0,0,0.1);
}

/* Video Modal */
.video-card { max-width: 820px; }

/* --------------------------------------------------------------------------
   17. CYBER TICKER BAR
   -------------------------------------------------------------------------- */

.cyber-ticker-bar {
    background: rgba(0, 0, 0, 0.9);
    border-bottom: 1px solid var(--border);
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    padding: 0.3rem 1.5rem;
    overflow: hidden;
    white-space: nowrap;
    position: relative;
    z-index: 201;
}

.ticker-content {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.ticker-item {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--text-muted);
}

.ticker-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: hsl(142, 71%, 55%);
    box-shadow: 0 0 5px hsl(142, 71%, 55%);
}

.ticker-sep { color: var(--text-dim); opacity: 0.35; }

/* --------------------------------------------------------------------------
   18. SECTION DIVIDERS & SECTION LABELS
   -------------------------------------------------------------------------- */

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

.section-label::before {
    content: '';
    display: inline-block;
    width: 18px;
    height: 1px;
    background: var(--accent);
    opacity: 0.6;
}

/* --------------------------------------------------------------------------
   19. RESPONSIVE
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
    .spatial-cards-container {
        grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    }
}

@media (max-width: 768px) {
    .app-header {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .header-nav { display: none; }

    .hero-title { letter-spacing: -0.025em; }

    .hero-stats {
        flex-wrap: wrap;
        gap: 1.25rem;
        padding: 1rem 1.5rem;
    }

    .controls-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box { min-width: unset; }

    .engineering-filter-group { justify-content: flex-start; }

    .spatial-cards-container {
        grid-template-columns: 1fr;
        gap: var(--sp-4);
    }

    .view-spatial .spatial-card { transform: none !important; }

    .hackathon-grid { grid-template-columns: 1fr; }

    .quest-tree-grid { grid-template-columns: 1fr; }

    .form-row.duo { grid-template-columns: 1fr; }

    .modal-card { max-height: 95vh; }

    .floating-hud { bottom: 1rem; right: 1rem; }
}

@media (max-width: 480px) {
    .main-layout { padding: var(--sp-4) 1rem; }

    .command-trigger-btn span { display: none; }

    .hackathon-actions { flex-direction: column; }
}

/* --------------------------------------------------------------------------
   20. UTILITY ANIMATIONS
   -------------------------------------------------------------------------- */

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes fadeUpIn {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

.animate-in {
    animation: fadeUpIn 0.5s var(--ease-out) both;
}

/* Badge pulse ring for special items */
.badge-pulse {
    font-size: var(--text-xs);
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--accent);
    border: 1px solid rgba(var(--accent-rgb), 0.2);
    padding: 0.15rem 0.45rem;
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
}

/* Synthesizer button label */
.synthesizer-btn { color: var(--accent); }

/* Timeline scrubber */
.timeline-scrubber {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    min-width: 180px;
}

.scrubber-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--text-xs);
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.scrubber-title {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.timeline-scrubber input[type="range"] {
    accent-color: var(--accent);
    cursor: pointer;
    width: 100%;
}

/* Filter pills (legacy selectors for any remaining references) */
.pill-btn {
    background: rgba(255,255,255,0.025);
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 0.38rem 0.85rem;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: var(--t-fast);
    font-family: var(--font-body);
}

.pill-btn:hover { color: var(--text); background: rgba(255,255,255,0.05); }

.pill-btn.active {
    background: rgba(var(--accent-rgb), 0.1);
    border-color: rgba(var(--accent-rgb), 0.35);
    color: var(--accent);
    font-weight: 500;
}

/* --------------------------------------------------------------------------
   21. SCROLL PROGRESS BAR (top accent line)
   -------------------------------------------------------------------------- */

#scroll-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), hsl(calc(var(--hue) + 40), 80%, 60%));
    z-index: 9999;
    transform-origin: left;
    transform: scaleX(0);
    transition: transform 0.1s linear;
}

/* --------------------------------------------------------------------------
   22. FOOTER
   -------------------------------------------------------------------------- */

.site-footer {
    margin-top: var(--sp-section);
    padding: var(--sp-8) clamp(1rem, 4vw, 2.5rem) var(--sp-6);
    border-top: 1px solid var(--border);
    position: relative;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 10%;
    right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(var(--accent-rgb), 0.4), transparent);
}

.footer-inner {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--sp-4);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.footer-brand .footer-name {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.01em;
}

.footer-brand .footer-engine {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-dim);
    letter-spacing: 0.06em;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--text-muted);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    text-decoration: none;
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    transition: var(--t-fast);
}

.footer-link:hover {
    color: var(--accent);
    border-color: rgba(var(--accent-rgb), 0.2);
    background: rgba(var(--accent-rgb), 0.05);
}

.footer-copy {
    width: 100%;
    text-align: center;
    margin-top: var(--sp-6);
    padding-top: var(--sp-4);
    border-top: 1px solid var(--border);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-dim);
    letter-spacing: 0.04em;
}

/* --------------------------------------------------------------------------
   23. RESPONSIVE OVERRIDES FOR BENTO FEATURED CARD
   -------------------------------------------------------------------------- */

@media (max-width: 768px) {
    .spatial-card:first-child {
        grid-column: 1;
    }

    .spatial-card:first-child .card-media-box {
        height: 200px;
    }

    .spatial-card:first-child .card-title {
        font-size: 1.15rem;
    }
}