/* =====================================================
   CHAHID ZAKARIA — Portfolio Design System
   Dark-first · Industrial-Tech · Editorial precision
   ===================================================== */

:root {
  /* Palette */
  --bg-0: #08090c;
  --bg-1: #0c0d12;
  --bg-2: #12141b;
  --bg-3: #171923;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #eef0f6;
  --text-dim: #a0a3b0;
  --text-soft: #7a7d8c;
  --accent: #00e5ff;
  --accent-2: #7c5cff;
  --accent-soft: rgba(0, 229, 255, 0.12);
  --danger: #ff5b6a;
  --success: #4ade80;

  /* Type */
  --font-sans: 'Space Grotesk', 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'Consolas', monospace;

  /* Space */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --space-8: 8rem;

  /* Radius */
  --r-1: 6px;
  --r-2: 12px;
  --r-3: 20px;

  /* Motion */
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-1: 200ms;
  --dur-2: 400ms;
  --dur-3: 700ms;

  /* Layout */
  --wrap: 1360px;
  --gutter: clamp(1.25rem, 3vw, 2.5rem);
}

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

html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; background: var(--bg-0); color: var(--text); font-family: var(--font-sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body { min-height: 100dvh; overflow-x: hidden; font-size: 16px; line-height: 1.55; -webkit-user-select: none; -ms-user-select: none; user-select: none; -webkit-touch-callout: none; }
body.admin, input, textarea, select, [contenteditable="true"], [contenteditable=""] { -webkit-user-select: text; -ms-user-select: text; user-select: text; -webkit-touch-callout: default; }
img { -webkit-user-drag: none; user-drag: none; pointer-events: auto; }

/* Background system: grid + gradient + subtle noise */
body::before,
body::after { content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0; }
body::before {
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(0, 229, 255, 0.08), transparent 60%),
    radial-gradient(900px 600px at -10% 20%, rgba(124, 92, 255, 0.06), transparent 60%),
    linear-gradient(180deg, #06070a 0%, #0a0b10 60%, #08090c 100%);
}
body::after {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 30%, #000 40%, transparent 85%);
  opacity: 0.4;
}

/* Grain overlay via SVG */
.grain { position: fixed; inset: 0; pointer-events: none; z-index: 1; mix-blend-mode: overlay; opacity: 0.06;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' seed='7'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.6 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

main { position: relative; z-index: 2; }

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--dur-1) var(--ease); }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

::selection { background: var(--accent); color: #001318; }

h1, h2, h3, h4 { font-family: var(--font-sans); font-weight: 500; letter-spacing: -0.02em; line-height: 1.05; margin: 0; }
h1 { font-size: clamp(3rem, 9vw, 8rem); }
h2 { font-size: clamp(2rem, 5vw, 4rem); }
h3 { font-size: clamp(1.4rem, 2vw, 1.8rem); font-weight: 500; }
p  { margin: 0; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }

/* ---------- Cursor ---------- */
.cursor { position: fixed; top: 0; left: 0; pointer-events: none; z-index: 9999; mix-blend-mode: difference; }
.cursor__dot { position: fixed; width: 6px; height: 6px; border-radius: 50%; background: #fff; transform: translate(-50%, -50%); transition: opacity var(--dur-1); }
.cursor__ring { position: fixed; width: 40px; height: 40px; border: 1px solid #fff; border-radius: 50%; transform: translate(-50%, -50%); transition: width var(--dur-2) var(--ease), height var(--dur-2) var(--ease), border-radius var(--dur-2) var(--ease), background var(--dur-2) var(--ease); }
.cursor__label { position: fixed; padding: 6px 10px; font: 500 10px/1 var(--font-mono); letter-spacing: 0.15em; text-transform: uppercase; color: #001318; background: var(--accent); border-radius: 999px; transform: translate(-50%, calc(-50% + 26px)); opacity: 0; transition: opacity var(--dur-1); white-space: nowrap; mix-blend-mode: normal; }
.cursor.is-hover .cursor__ring { width: 60px; height: 60px; }
.cursor.is-view .cursor__ring { width: 88px; height: 88px; background: var(--accent); border-color: var(--accent); }
.cursor.is-view .cursor__label { opacity: 1; }
@media (hover: none) { .cursor { display: none !important; } }

/* ---------- Loader ---------- */
.loader { position: fixed; inset: 0; z-index: 999; background: #06070a; display: grid; place-items: center; }
.loader__inner { width: min(620px, 88vw); }
.loader__brand { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 600; letter-spacing: -0.02em; }
.loader__brand span { color: var(--accent); }
.loader__meta { display: flex; justify-content: space-between; font: 500 11px/1 var(--font-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-dim); margin: 1rem 0 0.6rem; }
.loader__bar { height: 2px; background: rgba(255,255,255,0.08); overflow: hidden; }
.loader__bar span { display: block; height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
body.loaded .loader { pointer-events: none; opacity: 0; transition: opacity 500ms ease 200ms; }

/* ---------- Scroll progress ---------- */
.scroll-progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; background: transparent; z-index: 200; }
.scroll-progress span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width 60ms linear; }

/* ---------- Navigation ---------- */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; padding: 22px 0; transition: padding var(--dur-2) var(--ease), background var(--dur-2) var(--ease); }
.nav__inner { display: flex; align-items: center; gap: var(--gutter); max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.nav__logo { display: flex; align-items: center; gap: 0.75rem; }
.nav__mark { display: inline-grid; place-items: center; width: 36px; height: 36px; border: 1px solid var(--line-strong); border-radius: 8px; font: 600 12px/1 var(--font-mono); letter-spacing: 0.06em; background: rgba(255,255,255,0.02); }
.nav__name { font-weight: 600; letter-spacing: -0.01em; font-size: 0.92rem; }
.nav__title { font: 500 10px/1 var(--font-mono); text-transform: uppercase; letter-spacing: 0.2em; color: var(--text-dim); border-left: 1px solid var(--line); padding-left: 0.75rem; margin-left: 0.25rem; }
.nav__links { display: flex; gap: 2rem; margin-left: auto; }
.nav__links a { font-size: 0.9rem; color: var(--text-dim); position: relative; padding: 4px 0; }
.nav__links a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px; background: currentColor; transform-origin: right; transform: scaleX(0); transition: transform var(--dur-2) var(--ease); }
.nav__links a:hover { color: var(--text); }
.nav__links a:hover::after { transform-origin: left; transform: scaleX(1); }
.nav__cta { margin-left: 1rem; }
.nav__toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line-strong); border-radius: 8px; position: relative; margin-left: auto; }
.nav__toggle span { position: absolute; left: 10px; right: 10px; height: 1px; background: var(--text); transition: transform var(--dur-2) var(--ease), top var(--dur-2) var(--ease); }
.nav__toggle span:nth-child(1) { top: 16px; }
.nav__toggle span:nth-child(2) { top: 24px; }
body.menu-open .nav__toggle span:nth-child(1) { top: 20px; transform: rotate(45deg); }
body.menu-open .nav__toggle span:nth-child(2) { top: 20px; transform: rotate(-45deg); }

.nav.is-scrolled { padding: 12px 0; background: rgba(8, 9, 12, 0.7); backdrop-filter: blur(14px) saturate(140%); -webkit-backdrop-filter: blur(14px) saturate(140%); border-bottom: 1px solid var(--line); }

/* Mobile fullscreen menu */
.menu { position: fixed; inset: 0; z-index: 90; background: linear-gradient(180deg, #06070a, #0b0d13); transform: translateY(-100%); opacity: 0; visibility: hidden; transition: transform var(--dur-3) var(--ease), opacity var(--dur-3) var(--ease), visibility 0s linear var(--dur-3); pointer-events: none; }
body.menu-open .menu { transform: translateY(0); opacity: 1; visibility: visible; pointer-events: auto; transition: transform var(--dur-3) var(--ease), opacity var(--dur-3) var(--ease), visibility 0s linear 0s; }
.menu__inner { padding: 120px var(--gutter) 40px; height: 100%; display: flex; flex-direction: column; max-width: var(--wrap); margin: 0 auto; }
.menu__meta { display: flex; justify-content: space-between; font: 500 11px/1 var(--font-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 3rem; }
.menu__links { display: flex; flex-direction: column; gap: 1.5rem; flex: 1; }
.menu__links a { display: flex; align-items: baseline; gap: 1.5rem; font-size: clamp(2rem, 8vw, 4rem); font-weight: 500; letter-spacing: -0.02em; border-bottom: 1px solid var(--line); padding-bottom: 1rem; }
.menu__num { font: 500 12px/1 var(--font-mono); color: var(--text-soft); letter-spacing: 0.15em; }
.menu__foot { display: flex; justify-content: space-between; font: 500 12px/1 var(--font-mono); letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-dim); }

/* ---------- Buttons ---------- */
.btn { --pad-y: 14px; --pad-x: 22px; display: inline-flex; align-items: center; gap: 0.65rem; padding: var(--pad-y) var(--pad-x); border-radius: 999px; font: 500 0.86rem/1 var(--font-sans); letter-spacing: 0.02em; border: 1px solid var(--line-strong); transition: transform var(--dur-2) var(--ease), background var(--dur-2) var(--ease), color var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease); }
.btn svg { transition: transform var(--dur-2) var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn--primary { background: var(--accent); color: #001318; border-color: var(--accent); }
.btn--primary:hover { background: transparent; color: var(--accent); }
.btn--ghost { color: var(--text); background: rgba(255,255,255,0.02); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn--lg { --pad-y: 18px; --pad-x: 28px; font-size: 0.95rem; }

/* ---------- Section framework ---------- */
.section { padding: clamp(4rem, 10vw, 8rem) 0; position: relative; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 2rem; margin-bottom: clamp(2rem, 5vw, 4rem); flex-wrap: wrap; }
.section-head__label { font: 500 11px/1 var(--font-mono); letter-spacing: 0.25em; text-transform: uppercase; color: var(--accent); display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.6rem; }
.section-head__label::before { content: ""; width: 24px; height: 1px; background: var(--accent); }
.section-head h2 { max-width: 900px; }
.section-head__aside { max-width: 380px; color: var(--text-dim); font-size: 0.95rem; }

/* Section divider */
.divider { height: 1px; background: linear-gradient(90deg, transparent, var(--line-strong) 20%, var(--line-strong) 80%, transparent); }

/* ---------- Hero ---------- */
.hero { min-height: 100dvh; padding: 130px 0 60px; position: relative; display: flex; flex-direction: column; justify-content: center; }
.hero__inner { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.hero__eyebrow { display: inline-flex; align-items: center; gap: 0.75rem; font: 500 11px/1 var(--font-mono); letter-spacing: 0.3em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 1.6rem; }
.hero__eyebrow::before { content: ""; width: 40px; height: 1px; background: var(--accent); }
.hero__eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

.hero__name { font-weight: 500; letter-spacing: -0.04em; line-height: 0.92; }
.hero__name .line { display: block; overflow: hidden; }
.hero__name .line > span { display: inline-block; transform: translateY(110%); }
.hero__name i.ac { color: var(--accent); font-style: normal; }
.hero__title { font: 500 11px/1 var(--font-mono); letter-spacing: 0.3em; text-transform: uppercase; color: var(--accent); margin: 1.6rem 0 0.4rem; }
.hero__title::before { content: "// "; color: var(--text-soft); }
.hero__lead { max-width: 520px; color: var(--text-dim); font-size: 1.05rem; margin: 1.4rem 0 2.4rem; }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 1rem; }
.hero__meta { position: absolute; left: var(--gutter); bottom: 40px; display: flex; gap: 2rem; font: 500 10px/1 var(--font-mono); letter-spacing: 0.25em; text-transform: uppercase; color: var(--text-soft); }
.hero__meta span::before { content: ""; display: inline-block; width: 6px; height: 6px; background: var(--accent); margin-right: 0.6rem; vertical-align: middle; }

/* Hero portrait */
.portrait { position: relative; aspect-ratio: 4/5; border: 1px solid var(--line-strong); border-radius: var(--r-3); overflow: hidden; background: linear-gradient(160deg, rgba(0,229,255,0.05), rgba(124,92,255,0.05)); }
.portrait__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.95; }
.portrait__placeholder { position: absolute; inset: 0; display: grid; place-items: center; color: var(--text-soft); font: 500 11px/1 var(--font-mono); letter-spacing: 0.25em; text-transform: uppercase; background:
  radial-gradient(circle at 30% 30%, rgba(0,229,255,0.15), transparent 60%),
  radial-gradient(circle at 70% 70%, rgba(124,92,255,0.15), transparent 60%),
  #0b0d13;
}
.portrait__glow { position: absolute; inset: -1px; border-radius: var(--r-3); pointer-events: none; box-shadow: 0 0 60px rgba(0, 229, 255, 0.18) inset, 0 20px 60px rgba(0, 229, 255, 0.06); }
.portrait__scan { position: absolute; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, transparent, var(--accent), transparent); opacity: 0.35; animation: scan 5s linear infinite; }
@keyframes scan { 0% { top: 0; } 100% { top: 100%; } }
.portrait__frame { position: absolute; inset: 12px; border: 1px solid rgba(255,255,255,0.06); border-radius: calc(var(--r-3) - 6px); pointer-events: none; }
.portrait__corners::before,
.portrait__corners::after,
.portrait__corners > span::before,
.portrait__corners > span::after { content: ""; position: absolute; width: 18px; height: 18px; border: 1px solid var(--accent); }
.portrait__corners::before { top: 8px; left: 8px; border-right: 0; border-bottom: 0; }
.portrait__corners::after { top: 8px; right: 8px; border-left: 0; border-bottom: 0; }
.portrait__corners > span::before { bottom: 8px; left: 8px; border-right: 0; border-top: 0; }
.portrait__corners > span::after { bottom: 8px; right: 8px; border-left: 0; border-top: 0; }
.portrait__hud { position: absolute; left: 20px; right: 20px; top: 20px; display: flex; justify-content: space-between; font: 500 10px/1 var(--font-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-dim); }
.portrait__hud .hud-live { color: var(--accent); }
.portrait__caption { position: absolute; left: 20px; bottom: 20px; font: 500 10px/1 var(--font-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-dim); }

.chip-cloud { position: absolute; inset: -12px; pointer-events: none; }
.chip { position: absolute; padding: 8px 12px; border: 1px solid var(--line-strong); border-radius: 999px; background: rgba(10, 12, 18, 0.85); backdrop-filter: blur(6px); font: 500 10px/1 var(--font-mono); letter-spacing: 0.15em; text-transform: uppercase; color: var(--text); box-shadow: 0 8px 24px rgba(0,0,0,0.35); }
.chip::before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); margin-right: 0.5rem; vertical-align: middle; box-shadow: 0 0 8px var(--accent); }
.chip.pos-1 { top: 6%;  left: -8%;  animation: float 6s ease-in-out infinite; }
.chip.pos-2 { top: 22%; right: -12%; animation: float 7s ease-in-out infinite reverse; }
.chip.pos-3 { top: 55%; left: -14%; animation: float 8s ease-in-out infinite; }
.chip.pos-4 { top: 72%; right: -6%; animation: float 6.5s ease-in-out infinite reverse; }
.chip.pos-5 { top: 40%; right: -18%; animation: float 9s ease-in-out infinite; }
.chip.pos-6 { top: 88%; left: 20%; animation: float 7.5s ease-in-out infinite reverse; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

/* ---------- Marquee ---------- */
.marquee { border-block: 1px solid var(--line); padding: 22px 0; overflow: hidden; white-space: nowrap; }
.marquee__track { display: inline-flex; gap: 3rem; animation: marquee 40s linear infinite; }
.marquee__item { font: 500 clamp(1.2rem, 3vw, 2.2rem)/1 var(--font-sans); letter-spacing: -0.01em; color: var(--text-dim); display: inline-flex; align-items: center; gap: 3rem; }
.marquee__item::after { content: "✦"; color: var(--accent); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Statement / Intro ---------- */
.statement { font-size: clamp(1.6rem, 3.5vw, 3rem); font-weight: 400; letter-spacing: -0.02em; line-height: 1.1; max-width: 1100px; }
.statement .accent { color: var(--accent); }
.statement .dim { color: var(--text-soft); }

/* ---------- Cards / Projects ---------- */
.grid-projects { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1.5rem; }
.project-card { grid-column: span 6; position: relative; border: 1px solid var(--line); border-radius: var(--r-2); overflow: hidden; background: rgba(255,255,255,0.015); transition: border-color var(--dur-2) var(--ease), transform var(--dur-2) var(--ease); display: block; }
.project-card:hover { border-color: var(--line-strong); }
.project-card.is-featured { grid-column: span 12; }
.project-card__thumb { aspect-ratio: 16/9; background: linear-gradient(160deg, #12141b, #0c0d12); position: relative; overflow: hidden; }
.project-card__thumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 900ms var(--ease); }
.project-card:hover .project-card__thumb img { transform: scale(1.05); }
.project-card__thumb .placeholder { position: absolute; inset: 0; display: grid; place-items: center; color: var(--text-soft); font: 500 11px/1 var(--font-mono); letter-spacing: 0.2em; }
.project-card__thumb::after { content: ""; position: absolute; inset: 0; background:
  linear-gradient(to top, rgba(6, 7, 10, 0.7), transparent 60%),
  repeating-linear-gradient(45deg, transparent 0 8px, rgba(255,255,255,0.02) 8px 9px); pointer-events: none; }
.project-card__body { padding: 1.6rem 1.6rem 1.8rem; display: flex; flex-direction: column; gap: 0.75rem; }
.project-card__meta { display: flex; justify-content: space-between; font: 500 10px/1 var(--font-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-soft); }
.project-card__title { font-size: clamp(1.1rem, 1.6vw, 1.5rem); font-weight: 500; }
.project-card__desc { color: var(--text-dim); font-size: 0.95rem; }
.project-card__tech { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.4rem; }
.project-card__tech span { padding: 4px 8px; border: 1px solid var(--line); border-radius: 999px; font: 500 10px/1 var(--font-mono); letter-spacing: 0.1em; color: var(--text-dim); }
.project-card__arrow { position: absolute; top: 1.2rem; right: 1.2rem; width: 42px; height: 42px; border: 1px solid var(--line-strong); border-radius: 50%; display: grid; place-items: center; color: var(--text); background: rgba(6,7,10,0.6); backdrop-filter: blur(6px); transition: background var(--dur-2), color var(--dur-2), transform var(--dur-2); }
.project-card:hover .project-card__arrow { background: var(--accent); color: #001318; transform: rotate(-45deg); }

/* ---------- About / Timeline / Skills ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: clamp(2rem, 5vw, 5rem); }
.about-grid__aside { position: sticky; top: 120px; align-self: start; }
.stat-list { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 2rem; }
.stat-list li { list-style: none; border: 1px solid var(--line); padding: 1rem; border-radius: var(--r-1); }
.stat-list dt { font: 500 10px/1 var(--font-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-soft); margin-bottom: 0.5rem; }
.stat-list dd { margin: 0; font-size: 0.95rem; }

.timeline { position: relative; padding-left: 2rem; }
.timeline::before { content: ""; position: absolute; left: 0.35rem; top: 8px; bottom: 8px; width: 1px; background: linear-gradient(to bottom, var(--accent), var(--line) 30%, var(--line)); }
.timeline__item { position: relative; padding-bottom: 2.4rem; }
.timeline__item::before { content: ""; position: absolute; left: -1.75rem; top: 8px; width: 10px; height: 10px; border-radius: 50%; background: var(--bg-0); border: 2px solid var(--accent); box-shadow: 0 0 12px var(--accent); }
.timeline__date { font: 500 11px/1 var(--font-mono); letter-spacing: 0.2em; color: var(--accent); text-transform: uppercase; margin-bottom: 0.4rem; }
.timeline__role { font-size: 1.25rem; font-weight: 500; }
.timeline__org { color: var(--text-dim); font-size: 0.95rem; margin-top: 0.2rem; }
.timeline__desc { color: var(--text-soft); font-size: 0.9rem; margin-top: 0.5rem; max-width: 620px; }

.skills-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem; }
.skill-card { border: 1px solid var(--line); border-radius: var(--r-2); padding: 1.2rem 1.2rem 1.4rem; transition: transform var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease), background var(--dur-2) var(--ease); }
.skill-card:hover { transform: translateY(-3px); border-color: var(--accent); background: linear-gradient(180deg, rgba(0,229,255,0.05), transparent); }
.skill-card__cat { font: 500 10px/1 var(--font-mono); letter-spacing: 0.25em; text-transform: uppercase; color: var(--text-soft); }
.skill-card__name { font-size: 1.1rem; margin-top: 0.6rem; }
.skill-card__desc { color: var(--text-dim); font-size: 0.88rem; margin-top: 0.5rem; }
.skill-card__icon { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 8px; border: 1px solid var(--line); color: var(--accent); margin-bottom: 0.9rem; }

/* ---------- Articles ---------- */
.articles-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.5rem; }
.article-card { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--r-2); overflow: hidden; transition: border-color var(--dur-2) var(--ease); background: rgba(255,255,255,0.015); }
.article-card:hover { border-color: var(--line-strong); }
.article-card__thumb { aspect-ratio: 16/10; background: linear-gradient(160deg, #12141b, #0c0d12); position: relative; overflow: hidden; }
.article-card__thumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 900ms var(--ease); }
.article-card:hover .article-card__thumb img { transform: scale(1.05); }
.article-card__body { padding: 1.4rem; display: flex; flex-direction: column; gap: 0.6rem; flex: 1; }
.article-card__meta { display: flex; justify-content: space-between; font: 500 10px/1 var(--font-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-soft); }
.article-card__title { font-size: 1.2rem; font-weight: 500; letter-spacing: -0.01em; }
.article-card__excerpt { color: var(--text-dim); font-size: 0.92rem; }
.article-card__more { margin-top: auto; padding-top: 0.8rem; font: 500 11px/1 var(--font-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); }

/* ---------- Article / Project detail ---------- */
.detail-hero { padding: 160px 0 60px; }
.detail-hero__meta { display: flex; gap: 1.5rem; font: 500 11px/1 var(--font-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 1.5rem; }
.detail-hero__meta .cat { color: var(--accent); }
.detail-hero h1 { font-size: clamp(2rem, 5vw, 4.5rem); max-width: 1100px; }
.detail-hero__lead { max-width: 720px; color: var(--text-dim); font-size: 1.1rem; margin-top: 1.4rem; }
.detail-cover { aspect-ratio: 16/9; border: 1px solid var(--line); border-radius: var(--r-3); overflow: hidden; background: linear-gradient(160deg, #12141b, #0a0b10); position: relative; margin-top: 2rem; }
.detail-cover img { width: 100%; height: 100%; object-fit: cover; }

.prose { max-width: 780px; margin: 0 auto; color: var(--text); font-size: 1.05rem; line-height: 1.75; }
.prose h2 { font-size: clamp(1.5rem, 2.6vw, 2.2rem); margin-top: 2.5rem; margin-bottom: 1rem; }
.prose h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); margin-top: 2rem; margin-bottom: 0.75rem; }
.prose p { margin-bottom: 1.15rem; color: var(--text-dim); }
.prose a { color: var(--accent); border-bottom: 1px solid rgba(0,229,255,0.4); }
.prose img { border-radius: var(--r-2); margin: 1.5rem 0; }
.prose ul, .prose ol { color: var(--text-dim); padding-left: 1.5rem; margin: 1rem 0; }
.prose li { margin-bottom: 0.4rem; }
.prose blockquote { border-left: 2px solid var(--accent); padding: 0.4rem 0 0.4rem 1.4rem; color: var(--text); font-style: italic; margin: 1.5rem 0; }
.prose code { background: rgba(255,255,255,0.06); padding: 2px 6px; border-radius: 4px; font-family: var(--font-mono); font-size: 0.92em; }
.prose pre { background: #0c0d12; border: 1px solid var(--line); border-radius: var(--r-1); padding: 1rem; overflow-x: auto; }
.prose pre code { background: transparent; padding: 0; }

/* ---------- Forms / Contact ---------- */
.form { display: grid; gap: 1rem; max-width: 720px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field label { font: 500 11px/1 var(--font-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-dim); }
.field input, .field textarea, .field select { background: rgba(255,255,255,0.02); border: 1px solid var(--line); color: var(--text); padding: 14px 16px; border-radius: 8px; font: 400 0.95rem/1.4 var(--font-sans); transition: border-color var(--dur-2), background var(--dur-2); }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--accent); background: rgba(0,229,255,0.04); }
.field textarea { min-height: 140px; resize: vertical; }
.field-error { color: var(--danger); font-size: 0.85rem; }
.form__notice { padding: 1rem 1.2rem; border: 1px solid var(--line); border-left: 2px solid var(--accent); border-radius: 8px; font-size: 0.92rem; color: var(--text-dim); }
.form__notice.is-success { border-left-color: var(--success); }
.form__notice.is-error { border-left-color: var(--danger); }

/* ---------- Contact page ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: clamp(2rem, 5vw, 5rem); }
.contact-info h1 { font-size: clamp(2.2rem, 6vw, 5rem); }
.contact-info p { color: var(--text-dim); margin-top: 1rem; max-width: 420px; }
.contact-list { list-style: none; padding: 0; margin: 3rem 0 0; display: grid; gap: 1rem; }
.contact-list li { display: flex; justify-content: space-between; padding: 1rem 0; border-top: 1px solid var(--line); }
.contact-list li:last-child { border-bottom: 1px solid var(--line); }
.contact-list dt { font: 500 10px/1 var(--font-mono); letter-spacing: 0.25em; text-transform: uppercase; color: var(--text-soft); }
.contact-list dd { margin: 0; }

/* ---------- Category filter ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 2rem; }
.filters a { padding: 8px 14px; border: 1px solid var(--line); border-radius: 999px; font: 500 11px/1 var(--font-mono); letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-dim); transition: color var(--dur-2), border-color var(--dur-2), background var(--dur-2); }
.filters a:hover { color: var(--text); border-color: var(--line-strong); }
.filters a.is-active { background: var(--accent); border-color: var(--accent); color: #001318; }

/* ---------- Footer ---------- */
.foot { border-top: 1px solid var(--line); margin-top: clamp(4rem, 8vw, 8rem); position: relative; z-index: 2; }
.foot__inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem; padding: clamp(3rem, 6vw, 5rem) var(--gutter); max-width: var(--wrap); margin: 0 auto; }
.foot__name { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 500; letter-spacing: -0.02em; }
.foot__title { color: var(--accent); font: 500 12px/1 var(--font-mono); letter-spacing: 0.25em; text-transform: uppercase; margin-top: 0.4rem; }
.foot__bio { color: var(--text-dim); margin-top: 1rem; max-width: 320px; }
.foot__col { display: flex; flex-direction: column; gap: 0.6rem; }
.foot__col a { color: var(--text-dim); }
.foot__col a:hover { color: var(--accent); }
.foot__label { font: 500 10px/1 var(--font-mono); letter-spacing: 0.25em; text-transform: uppercase; color: var(--text-soft); margin-bottom: 0.4rem; }
.foot__bar { border-top: 1px solid var(--line); padding: 1rem var(--gutter); display: flex; justify-content: space-between; gap: 2rem; font: 500 11px/1 var(--font-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-soft); max-width: var(--wrap); margin: 0 auto; overflow: hidden; }
.foot__badge { color: var(--accent); }

/* ---------- Micro-utilities ---------- */
.stagger > * { opacity: 0; transform: translateY(20px); }
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 900ms var(--ease-out), transform 900ms var(--ease-out); }
.reveal.is-in { opacity: 1; transform: none; }

.pill { display: inline-flex; padding: 6px 12px; border: 1px solid var(--line-strong); border-radius: 999px; font: 500 10px/1 var(--font-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-dim); }
.pill--accent { color: var(--accent); border-color: rgba(0,229,255,0.4); background: rgba(0,229,255,0.06); }

.tag-line { display: flex; align-items: center; gap: 0.75rem; font: 500 11px/1 var(--font-mono); letter-spacing: 0.25em; text-transform: uppercase; color: var(--accent); }
.tag-line::before { content: ""; width: 24px; height: 1px; background: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .hero__inner { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .about-grid__aside { position: static; }
  .contact-grid { grid-template-columns: 1fr; }
  .foot__inner { grid-template-columns: 1fr 1fr; }
  .project-card, .project-card.is-featured { grid-column: span 12; }
}
@media (max-width: 800px) {
  .nav__links, .nav__cta, .nav__title { display: none; }
  .nav__toggle { display: block; }
  .foot__inner { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .chip.pos-1, .chip.pos-5 { display: none; }
  .cursor { display: none; }
  h1 { font-size: clamp(2.6rem, 12vw, 4.2rem); }
  .hero__meta { display: none; }
}
@media (max-width: 520px) {
  .nav__title { display: none; }
  .grid-projects { gap: 1rem; }
  .marquee__item { gap: 2rem; }
  .chip { transform: scale(0.85); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  .cursor { display: none; }
}