/* =============================================================================
   abhisheksajan.com — Design system
   Glassmorphism · deep purple + electric cyan · auto light/dark · per-page accent
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
    --accent: #7C3AED;        /* overridden per skill page */
    --accent-2: #22D3EE;

    --violet: #7C3AED;
    --cyan: #22D3EE;
    --pink: #EC4899;

    --radius: 22px;
    --radius-sm: 14px;
    --maxw: 1200px;
    --ease: cubic-bezier(.22,.61,.36,1);
    --gap: clamp(1rem, 2vw, 2rem);

    --font-display: "Clash Display", "Space Grotesk", system-ui, sans-serif;
    --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

/* Dark theme (default base) */
:root, [data-theme="dark"] {
    --bg: #0B0614;
    --bg-2: #120A22;
    --surface: rgba(255,255,255,.05);
    --surface-2: rgba(255,255,255,.08);
    --stroke: rgba(255,255,255,.12);
    --text: #F3EEFF;
    --text-dim: #B9AED2;
    --text-mute: #7E7596;
    --shadow: 0 20px 60px -20px rgba(0,0,0,.7);
    --glass-blur: 18px;
    color-scheme: dark;
}

/* Light theme */
[data-theme="light"] {
    --bg: #F6F4FF;
    --bg-2: #ECE8FF;
    --surface: rgba(255,255,255,.65);
    --surface-2: rgba(255,255,255,.85);
    --stroke: rgba(20,10,40,.10);
    --text: #1A1030;
    --text-dim: #4A3F66;
    --text-mute: #786E92;
    --shadow: 0 20px 50px -24px rgba(80,40,140,.35);
    --glass-blur: 16px;
    color-scheme: light;
}

/* Follow device when no explicit choice */
@media (prefers-color-scheme: light) {
    :root:not([data-theme]) {
        --bg: #F6F4FF; --bg-2: #ECE8FF;
        --surface: rgba(255,255,255,.65); --surface-2: rgba(255,255,255,.85);
        --stroke: rgba(20,10,40,.10);
        --text: #1A1030; --text-dim: #4A3F66; --text-mute: #786E92;
        --shadow: 0 20px 50px -24px rgba(80,40,140,.35);
        color-scheme: light;
    }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}
body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    position: relative;
    min-height: 100vh;
}
img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ---------- Ambient background ---------- */
.bg-canvas {
    position: fixed; inset: 0; z-index: -3; pointer-events: none;
    background:
        radial-gradient(60% 50% at 15% 10%, color-mix(in srgb, var(--accent) 30%, transparent), transparent 60%),
        radial-gradient(55% 50% at 85% 20%, color-mix(in srgb, var(--accent-2) 26%, transparent), transparent 60%),
        radial-gradient(70% 60% at 50% 110%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 60%);
    filter: saturate(1.1);
}
.bg-grain {
    position: fixed; inset: 0; z-index: -2; pointer-events: none; opacity: .035;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
#three-hero { position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .9; }

/* ---------- Layout ---------- */
.container { width: min(100% - 2.4rem, var(--maxw)); margin-inline: auto; }
.section { padding-block: clamp(4rem, 9vw, 8rem); position: relative; }
.section-tag {
    display: inline-flex; align-items: center; gap: .5rem;
    font-size: .78rem; letter-spacing: .18em; text-transform: uppercase;
    color: var(--accent-2); font-weight: 600; margin-bottom: 1rem;
}
.section-tag::before { content: ""; width: 26px; height: 1px; background: var(--accent-2); }

/* ---------- Typography ---------- */
h1, h2, h3, .display { font-family: var(--font-display); font-weight: 600; line-height: 1.05; letter-spacing: -.02em; }
.h-hero { font-size: clamp(2.6rem, 7vw, 5.6rem); }
.h-1 { font-size: clamp(2rem, 4.5vw, 3.4rem); }
.h-2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--text-dim); max-width: 60ch; }
.text-dim { color: var(--text-dim); }
.text-mute { color: var(--text-mute); }
.gradient-text {
    background: linear-gradient(110deg, var(--accent), var(--accent-2) 60%, var(--accent));
    background-size: 200% auto;
    -webkit-background-clip: text; background-clip: text; color: transparent;
    animation: shine 6s linear infinite;
}
@keyframes shine { to { background-position: 200% center; } }

/* ---------- Glass ---------- */
.glass {
    background: var(--surface);
    backdrop-filter: blur(var(--glass-blur)) saturate(1.4);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.4);
    border: 1px solid var(--stroke);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.glass-hover { transition: transform .5s var(--ease), border-color .4s, box-shadow .5s; }
.glass-hover:hover {
    transform: translateY(-6px);
    border-color: color-mix(in srgb, var(--accent) 50%, var(--stroke));
    box-shadow: 0 30px 70px -28px color-mix(in srgb, var(--accent) 55%, transparent);
}

/* ---------- Buttons ---------- */
.btn {
    --btn-bg: var(--accent);
    display: inline-flex; align-items: center; gap: .6rem;
    padding: .9rem 1.6rem; border-radius: 100px; font-weight: 600;
    position: relative; overflow: hidden; isolation: isolate;
    transition: transform .3s var(--ease), box-shadow .3s;
    will-change: transform;
}
.btn-primary {
    background: linear-gradient(120deg, var(--accent), var(--accent-2));
    color: #fff; box-shadow: 0 14px 36px -12px color-mix(in srgb, var(--accent) 70%, transparent);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 22px 50px -14px color-mix(in srgb, var(--accent) 75%, transparent); }
.btn-ghost { background: var(--surface); border: 1px solid var(--stroke); color: var(--text); }
.btn-ghost:hover { transform: translateY(-3px); border-color: var(--accent); }
.btn-lg { padding: 1.05rem 2rem; font-size: 1.05rem; }
.btn .arrow { transition: transform .3s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- Navbar ---------- */
.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    transition: background .4s, backdrop-filter .4s, border-color .4s, padding .4s;
    border-bottom: 1px solid transparent;
}
.nav.scrolled {
    background: color-mix(in srgb, var(--bg) 72%, transparent);
    backdrop-filter: blur(16px) saturate(1.4);
    -webkit-backdrop-filter: blur(16px) saturate(1.4);
    border-bottom: 1px solid var(--stroke);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding-block: 1.1rem; }
.brand { display: flex; align-items: center; gap: .6rem; font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; }
.brand .dot { width: 12px; height: 12px; border-radius: 50%; background: linear-gradient(120deg, var(--accent), var(--accent-2)); box-shadow: 0 0 16px var(--accent); }
.nav-links { display: flex; align-items: center; gap: .3rem; }
.nav-links a { padding: .5rem .85rem; border-radius: 100px; font-size: .95rem; color: var(--text-dim); transition: color .25s, background .25s; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); background: var(--surface); }
.nav-actions { display: flex; align-items: center; gap: .6rem; }

.theme-toggle, .nav-burger {
    width: 42px; height: 42px; display: grid; place-items: center;
    border-radius: 50%; background: var(--surface); border: 1px solid var(--stroke);
    transition: transform .3s, border-color .3s;
}
.theme-toggle:hover, .nav-burger:hover { transform: rotate(15deg) scale(1.05); border-color: var(--accent); }
.nav-burger { display: none; }
.theme-toggle .sun { display: none; }
[data-theme="light"] .theme-toggle .sun { display: block; }
[data-theme="light"] .theme-toggle .moon { display: none; }

/* Mobile menu */
@media (max-width: 860px) {
    .nav-burger { display: grid; }
    .nav-links {
        position: fixed; inset: 0 0 0 auto; width: min(80vw, 320px);
        flex-direction: column; align-items: flex-start; justify-content: center;
        gap: .4rem; padding: 2rem; background: var(--bg-2);
        border-left: 1px solid var(--stroke);
        transform: translateX(100%); transition: transform .45s var(--ease);
    }
    .nav-links.open { transform: translateX(0); }
    .nav-links a { width: 100%; font-size: 1.2rem; padding: .8rem 1rem; }
}

/* ---------- Hero ---------- */
.hero { min-height: 100svh; display: flex; align-items: center; padding-top: 6rem; position: relative; }
.hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: var(--gap); align-items: center; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
.hero-eyebrow { display: inline-flex; gap: .6rem; align-items: center; padding: .5rem 1rem; border-radius: 100px; font-size: .85rem; color: var(--text-dim); margin-bottom: 1.5rem; }
.hero-eyebrow .live { width: 8px; height: 8px; border-radius: 50%; background: #34D399; box-shadow: 0 0 0 0 #34D399; animation: pulse 2s infinite; }
@keyframes pulse { 0%{box-shadow:0 0 0 0 color-mix(in srgb,#34D399 70%,transparent);} 70%{box-shadow:0 0 0 10px transparent;} 100%{box-shadow:0 0 0 0 transparent;} }
.hero h1 { margin-bottom: 1.4rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2rem; }
.hero-portrait { position: relative; aspect-ratio: 4/5; border-radius: var(--radius); overflow: hidden; }
.hero-portrait img { width: 100%; height: 100%; object-fit: cover; }
.hero-portrait .placeholder {
    width: 100%; height: 100%; display: grid; place-items: center; text-align: center; padding: 2rem;
    background:
        radial-gradient(circle at 30% 20%, color-mix(in srgb, var(--accent) 50%, transparent), transparent 60%),
        radial-gradient(circle at 80% 90%, color-mix(in srgb, var(--accent-2) 45%, transparent), transparent 60%),
        var(--surface-2);
    color: var(--text-dim); font-size: .9rem;
}
.hero-marquee { margin-top: 2.5rem; }

/* ---------- Marquee ---------- */
.marquee { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee-track { display: flex; gap: 3rem; width: max-content; animation: scroll-x 28s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span { font-family: var(--font-display); font-size: clamp(1.1rem, 2.4vw, 1.8rem); color: var(--text-mute); display: inline-flex; align-items: center; gap: 3rem; }
.marquee-track span::after { content: "✦"; color: var(--accent); }
@keyframes scroll-x { to { transform: translateX(-50%); } }

/* ---------- Stat chips ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: var(--gap); }
.stat { padding: 1.6rem; text-align: center; }
.stat .num { font-family: var(--font-display); font-size: clamp(2rem,4vw,3rem); background: linear-gradient(120deg,var(--accent),var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat .label { color: var(--text-dim); font-size: .9rem; margin-top: .3rem; }

/* ---------- Skills grid (home) ---------- */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); gap: var(--gap); }
.skill-card { padding: 2rem; display: flex; flex-direction: column; gap: 1rem; position: relative; overflow: hidden; min-height: 280px; }
.skill-card::after { content: ""; position: absolute; inset: auto -40% -60% auto; width: 60%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, color-mix(in srgb, var(--card-accent, var(--accent)) 60%, transparent), transparent 70%); opacity: .5; transition: transform .6s var(--ease), opacity .6s; }
.skill-card:hover::after { transform: scale(1.4); opacity: .8; }
.skill-card .ico { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: color-mix(in srgb, var(--card-accent, var(--accent)) 18%, transparent); color: var(--card-accent, var(--accent)); }
.skill-card h3 { font-size: 1.4rem; }
.skill-card .go { margin-top: auto; display: inline-flex; align-items: center; gap: .5rem; color: var(--card-accent, var(--accent)); font-weight: 600; }

/* ---------- Clients carousel ---------- */
.client-track-wrap { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); }
.client-track { display: flex; gap: 1.2rem; width: max-content; animation: scroll-x 40s linear infinite; }
.client-track.rev { animation-direction: reverse; animation-duration: 50s; }
.client-track-wrap:hover .client-track { animation-play-state: paused; }
.client-card { width: 220px; padding: 1.4rem; flex: 0 0 auto; display: flex; flex-direction: column; gap: .6rem; }
.client-card .logo-box { height: 60px; display: flex; align-items: center; }
.client-card .logo-box img { max-height: 52px; width: auto; object-fit: contain; filter: drop-shadow(0 2px 8px rgba(0,0,0,.3)); }
.client-card .logo-fallback { font-family: var(--font-display); font-size: 1.3rem; color: var(--text); }
.client-card .cat { font-size: .72rem; text-transform: uppercase; letter-spacing: .12em; color: var(--accent-2); }
.client-card .blurb { font-size: .86rem; color: var(--text-dim); }

/* ---------- Cards / portfolio ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px,1fr)); gap: var(--gap); }
.work-card { overflow: hidden; display: flex; flex-direction: column; }
.work-card .cover { aspect-ratio: 16/10; background: var(--surface-2); position: relative; overflow: hidden; }
.work-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.work-card:hover .cover img { transform: scale(1.06); }
.work-card .cover .ph { width: 100%; height: 100%; display: grid; place-items: center; background: radial-gradient(circle at 30% 30%, color-mix(in srgb,var(--accent) 40%,transparent), transparent 60%), var(--surface-2); }
.work-card .cover .ph .mono { font-family: var(--font-display); font-size: 2rem; color: var(--text); opacity: .85; }
.work-card .body { padding: 1.5rem; display: flex; flex-direction: column; gap: .7rem; flex: 1; }
.work-card .meta { display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.work-card .pill { font-size: .72rem; padding: .25rem .7rem; border-radius: 100px; background: color-mix(in srgb,var(--accent) 16%,transparent); color: var(--accent-2); text-transform: uppercase; letter-spacing: .1em; }
.work-card h3 { font-size: 1.25rem; }
.work-card .res { font-size: .85rem; color: var(--text-dim); display: flex; gap: .5rem; align-items: flex-start; }
.work-card .res::before { content: "↗"; color: var(--accent-2); }
.tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: auto; }
.tags span { font-size: .72rem; padding: .25rem .6rem; border-radius: 8px; background: var(--surface-2); color: var(--text-dim); }

/* ---------- Two-column page (skill) ---------- */
.split { display: grid; grid-template-columns: 1fr 320px; gap: var(--gap); align-items: start; }
@media (max-width: 980px) { .split { grid-template-columns: 1fr; } }
.aside { position: sticky; top: 100px; display: flex; flex-direction: column; gap: var(--gap); }
.aside-card { padding: 1.6rem; }
.aside-card h4 { font-family: var(--font-display); margin-bottom: .8rem; }
.aside-list a { display: flex; align-items: center; justify-content: space-between; padding: .7rem 0; border-bottom: 1px solid var(--stroke); color: var(--text-dim); transition: color .25s, padding .25s; }
.aside-list a:last-child { border-bottom: none; }
.aside-list a:hover { color: var(--accent-2); padding-left: .4rem; }

/* ---------- Page hero (inner) ---------- */
.page-hero { padding-top: 9rem; padding-bottom: 2rem; }
.breadcrumb { font-size: .85rem; color: var(--text-mute); margin-bottom: 1rem; display: flex; gap: .5rem; }
.breadcrumb a:hover { color: var(--accent-2); }

/* ---------- Forms ---------- */
.form { display: grid; gap: 1.1rem; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
@media (max-width: 620px){ .form .row { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: .45rem; }
.field label { font-size: .85rem; color: var(--text-dim); font-weight: 500; }
.field input, .field textarea, .field select {
    width: 100%; padding: .9rem 1rem; border-radius: var(--radius-sm);
    background: var(--surface); border: 1px solid var(--stroke); color: var(--text);
    font: inherit; transition: border-color .25s, box-shadow .25s, background .25s;
}
.field textarea { min-height: 140px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus {
    outline: none; border-color: var(--accent);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent);
}
.field .hp { position: absolute; left: -9999px; }
.form-note { font-size: .85rem; }
.form-status { padding: 1rem 1.2rem; border-radius: var(--radius-sm); display: none; }
.form-status.show { display: block; }
.form-status.ok { background: color-mix(in srgb,#10B981 18%,transparent); color: #6EE7B7; border: 1px solid color-mix(in srgb,#10B981 40%,transparent); }
.form-status.err { background: color-mix(in srgb,#EF4444 18%,transparent); color: #FCA5A5; border: 1px solid color-mix(in srgb,#EF4444 40%,transparent); }

/* ---------- Floating widgets ---------- */
.float-wa, .to-top {
    position: fixed; bottom: 22px; z-index: 90; width: 56px; height: 56px;
    border-radius: 50%; display: grid; place-items: center;
    box-shadow: 0 12px 30px -8px rgba(0,0,0,.5); transition: transform .3s var(--ease), opacity .3s;
}
.float-wa { left: 22px; background: #25D366; color: #fff; animation: floaty 3.5s ease-in-out infinite; }
.float-wa:hover { transform: scale(1.1); }
.float-wa::after { content: ""; position: absolute; inset: 0; border-radius: 50%; box-shadow: 0 0 0 0 #25D366; animation: pulse 2.4s infinite; }
.to-top { right: 22px; background: var(--surface-2); border: 1px solid var(--stroke); backdrop-filter: blur(12px); color: var(--text); opacity: 0; pointer-events: none; }
.to-top.show { opacity: 1; pointer-events: auto; }
.to-top:hover { transform: translateY(-4px); border-color: var(--accent); }
@keyframes floaty { 0%,100%{transform:translateY(0);} 50%{transform:translateY(-6px);} }

/* ---------- Footer ---------- */
.footer { padding-block: 4rem 2rem; border-top: 1px solid var(--stroke); margin-top: 4rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: var(--gap); }
@media (max-width: 800px){ .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer h5 { font-size: .8rem; text-transform: uppercase; letter-spacing: .14em; color: var(--text-mute); margin-bottom: 1rem; }
.footer a { color: var(--text-dim); display: block; padding: .3rem 0; transition: color .2s; }
.footer a:hover { color: var(--accent-2); }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--stroke); color: var(--text-mute); font-size: .85rem; }
.socials { display: flex; gap: .6rem; }
.socials a { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; background: var(--surface); border: 1px solid var(--stroke); color: var(--text-dim); }
.socials a:hover { color: var(--text); border-color: var(--accent); transform: translateY(-3px); }

/* ---------- Reveal animation ---------- */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal-delay="1"]{ transition-delay: .08s; }
[data-reveal-delay="2"]{ transition-delay: .16s; }
[data-reveal-delay="3"]{ transition-delay: .24s; }
[data-reveal-delay="4"]{ transition-delay: .32s; }

/* ---------- Cinematic / gallery / metrics variants ---------- */
.variant-cinematic .work-card .cover { aspect-ratio: 21/9; }
.variant-gallery .card-grid { grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); }
.variant-gallery .work-card .cover { aspect-ratio: 1; }
.variant-metrics .work-card { flex-direction: row; align-items: stretch; }
.variant-metrics .work-card .cover { aspect-ratio: 1; width: 120px; flex: 0 0 120px; }
@media (max-width: 520px){ .variant-metrics .work-card { flex-direction: column; } .variant-metrics .work-card .cover { width: 100%; aspect-ratio: 16/10; } }

/* ---------- Utility ---------- */
.center { text-align: center; }
.mx-auto { margin-inline: auto; }
.mt-1 { margin-top: 1rem; } .mt-2 { margin-top: 2rem; } .mt-3 { margin-top: 3rem; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); }
@media (max-width: 760px){ .grid-2 { grid-template-columns: 1fr; } }
.divider { height: 1px; background: var(--stroke); border: none; margin-block: 2rem; }
.badge { display: inline-flex; gap: .4rem; align-items: center; padding: .4rem .9rem; border-radius: 100px; background: var(--surface); border: 1px solid var(--stroke); font-size: .85rem; color: var(--text-dim); }