/* ============================================================
   Meng Ung - portfolio
   Dark-locked, data-forward. Accent: emerald (locked).
   Type: Geist + Geist Mono (self-hosted).
   ============================================================ */

@font-face {
  font-family: "Geist";
  src: url("../fonts/Geist-Variable.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
  font-style: normal;
}
@font-face {
  font-family: "Geist Mono";
  src: url("../fonts/GeistMono-Variable.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
  font-style: normal;
}

:root {
  --bg: #0a0b0d;
  --surface: #101215;
  --surface-2: #15181c;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);

  --text: #f4f4f5;
  --text-2: #a8acb3;
  --text-3: #8b9099;

  --accent: #34d399;
  --accent-strong: #10b981;
  --accent-ink: #052016;
  --accent-tint: rgba(52, 211, 153, 0.10);

  --radius: 14px;
  --radius-sm: 10px;

  --font-sans: "Geist", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --container: 1200px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -0.02em; }

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: 24px;
}

/* faint dot-grid texture, fixed, behind content */
.grain {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 30%, transparent 80%);
}

main, .nav, .footer { position: relative; z-index: 1; }

/* ---------- Buttons (pill, consistent) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  white-space: nowrap;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.btn--primary {
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
}
.btn--primary:hover { background: var(--accent-strong); transform: translateY(-1px); }
.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(0.985); }
.btn--lg { padding: 15px 30px; font-size: 1.05rem; }

/* ---------- Eyebrow + section titles ---------- */
.eyebrow {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}
.section__title {
  font-size: clamp(1.7rem, 1rem + 2.6vw, 2.7rem);
  line-height: 1.08;
  max-width: 20ch;
}

/* ---------- NAV ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; }
.brand__mark {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: var(--accent-tint);
  border: 1px solid var(--line-strong);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.nav__links { display: flex; gap: 28px; margin-left: auto; }
.nav__links a {
  font-size: 0.92rem;
  color: var(--text-2);
  transition: color 0.2s var(--ease);
}
.nav__links a:hover { color: var(--text); }
.nav__cta { margin-left: 8px; }

@media (max-width: 760px) {
  .nav__links { display: none; }
}

/* ---------- HERO ---------- */
.hero { padding: clamp(56px, 6vw, 96px) 0 clamp(64px, 7vw, 110px); }
.hero__grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.hero__title {
  font-size: clamp(2.1rem, 1.1rem + 3.5vw, 3.7rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  max-width: 19ch;
}
.hero__sub {
  margin: 22px 0 0;
  font-size: 1.12rem;
  color: var(--text-2);
  max-width: 46ch;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }

.hero__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface), var(--bg));
  overflow: hidden;
}
.stat {
  padding: 24px 22px;
  border-bottom: 1px solid var(--line);
}
.stat:nth-child(odd) { border-right: 1px solid var(--line); }
.stat:nth-last-child(-n+2) { border-bottom: none; }
.stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 1rem + 2.4vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--accent);
}
.stat__label {
  display: block;
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--text-3);
  line-height: 1.45;
}

@media (max-width: 860px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__stats { max-width: 460px; }
}

/* ---------- ABOUT ---------- */
.about { padding: clamp(56px, 7vw, 110px) 0; border-top: 1px solid var(--line); }
.about__grid {
  display: grid;
  grid-template-columns: 0.8fr 1.4fr;
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}
.about__portrait { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; }
.portrait {
  position: relative;
  overflow: hidden;
  width: 100%;
  max-width: 320px;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(120% 80% at 30% 10%, var(--accent-tint), transparent 55%),
    linear-gradient(160deg, var(--surface-2), var(--bg));
  display: grid;
  place-items: center;
}
.portrait__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}
.portrait__mono {
  font-family: var(--font-mono);
  font-size: 3.2rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.02em;
}
.about__loc {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--text-3);
}
.about__lead {
  margin: 22px 0 0;
  font-size: 1.12rem;
  color: var(--text-2);
  max-width: 60ch;
}

/* ---------- Chips (shared) ---------- */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}
.chips li {
  padding: 8px 15px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  font-size: 0.85rem;
  color: var(--text-2);
}

@media (max-width: 800px) {
  .about__grid { grid-template-columns: 1fr; }
  .portrait, .portrait__img { max-width: 240px; }
}

/* ---------- EXPERIENCE (timeline) ---------- */
.experience { padding: clamp(56px, 7vw, 110px) 0; border-top: 1px solid var(--line); }
.timeline { list-style: none; margin: 44px 0 0; padding: 0; }
.entry {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: clamp(20px, 4vw, 56px);
  padding: 34px 0;
  border-top: 1px solid var(--line);
}
.entry:last-child { border-bottom: 1px solid var(--line); }
.entry__meta { display: flex; flex-direction: column; gap: 6px; }
.entry__co { font-size: 1.25rem; font-weight: 600; }
.entry__dates {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--text-3);
}
.entry__role {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 14px;
}
.entry__points { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.entry__points li {
  position: relative;
  padding-left: 22px;
  color: var(--text-2);
  font-size: 0.98rem;
}
.entry__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--accent);
  opacity: 0.7;
}
.entry__points strong { color: var(--text); font-weight: 600; }
.experience__earlier {
  margin: 34px 0 0;
  color: var(--text-3);
  font-size: 0.95rem;
  max-width: 70ch;
}

@media (max-width: 720px) {
  .entry { grid-template-columns: 1fr; gap: 16px; }
}

/* ---------- RESULTS (bento) ---------- */
.results { padding: clamp(56px, 7vw, 110px) 0; border-top: 1px solid var(--line); }
.bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 44px;
}
.cell {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 30px 26px;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}
.cell:hover { transform: translateY(-3px); border-color: var(--line-strong); }
.cell--feature {
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 22px;
  background:
    radial-gradient(120% 130% at 88% 8%, var(--accent-tint), transparent 58%),
    linear-gradient(170deg, var(--surface-2), var(--surface));
}
.cell--tint { background: linear-gradient(160deg, var(--accent-tint), var(--surface)); }
.cell__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 1rem + 2vw, 2.3rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--accent);
}
.cell--feature .cell__num { font-size: clamp(2rem, 1.2rem + 2.6vw, 3rem); }
.cell__label { margin: 12px 0 0; color: var(--text-2); font-size: 0.95rem; }

@media (max-width: 880px) {
  .bento { grid-template-columns: repeat(2, 1fr); }
  .cell--feature { grid-column: span 2; }
}
@media (max-width: 540px) {
  .bento { grid-template-columns: 1fr; }
  .cell--feature { grid-column: span 1; }
}

/* ---------- STACK ---------- */
.stack { padding: clamp(56px, 7vw, 110px) 0; border-top: 1px solid var(--line); }
.stack__lead { margin: 18px 0 0; color: var(--text-2); max-width: 60ch; font-size: 1.05rem; }
.stack__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 44px;
}
.stack__cat {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.stack__group .chips { margin-top: 18px; }
.stack__group .chips li { background: var(--surface); }

@media (max-width: 860px) { .stack__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 460px) { .stack__grid { grid-template-columns: 1fr; } }

/* ---------- CONTACT ---------- */
.contact { padding: clamp(70px, 9vw, 140px) 0; border-top: 1px solid var(--line); }
.contact__inner { max-width: 760px; }
.contact__title {
  font-size: clamp(1.9rem, 1.1rem + 3vw, 3.1rem);
  line-height: 1.05;
  max-width: 18ch;
}
.contact__sub { margin: 22px 0 0; color: var(--text-2); font-size: 1.12rem; max-width: 54ch; }
.contact__cta { margin-top: 34px; }
.contact__methods {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 32px;
  margin: 40px 0 0;
  padding: 28px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}
.contact__methods a {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-2);
  transition: color 0.2s var(--ease);
}
.contact__methods a:hover { color: var(--accent); }

/* ---------- FOOTER ---------- */
.footer { border-top: 1px solid var(--line); padding: 28px 0; }
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--text-3);
}
.footer__name { color: var(--text-2); font-weight: 500; }
.footer__copy { font-family: var(--font-mono); }

/* ---------- Reveal motion (gated) ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}