/* Muhammad Faiz Assariy - portfolio stylesheet
   Single theme family (cool neutrals) with light and dark tokens.
   One accent hue (orange). One corner radius (8px) everywhere.
   Fonts: self-hosted Geist + Geist Mono, falling back to the system stack. */

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

:root {
  --font-sans: "Geist", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --bg: #fbfbfa;
  --surface: #ffffff;
  --surface-sunk: #f4f4f3;
  --ink: #17171a;
  --ink-soft: #4b4b52;
  --ink-faint: #6d6d76;
  --line: #e4e4e7;
  --line-strong: #cfcfd4;
  --accent: #b8501f;
  --accent-ink: #ffffff;
  --accent-tint: rgba(184, 80, 31, 0.09);

  --radius: 8px;
  --wrap: 1120px;
  --gutter: 1.5rem;
  --shadow: 0 1px 2px rgba(23, 23, 26, 0.05), 0 8px 24px rgba(23, 23, 26, 0.04);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0d;
    --surface: #131317;
    --surface-sunk: #16161a;
    --ink: #f2f2f4;
    --ink-soft: #adadb5;
    --ink-faint: #83838c;
    --line: #26262b;
    --line-strong: #35353c;
    --accent: #ff7a41;
    --accent-ink: #17130f;
    --accent-tint: rgba(255, 122, 65, 0.12);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 32px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  font-synthesis-weight: none;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0 0 0.5rem;
  text-wrap: balance;
}

h1 { font-size: clamp(2.05rem, 4.4vw, 3rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.5rem, 3.2vw, 2.05rem); }
h3 { font-size: clamp(1.15rem, 1.9vw, 1.4rem); }
h4 { font-size: 0.98rem; letter-spacing: 0.01em; }

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

a { color: var(--ink); text-decoration-color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; overflow-wrap: anywhere; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

ul, ol { margin: 0 0 1rem; padding-left: 1.1rem; }
li { margin-bottom: 0.4rem; }
li:last-child { margin-bottom: 0; }

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--surface);
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  z-index: 60;
}
.skip:focus { left: 1rem; top: 1rem; }

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  height: 64px;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand {
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
}
.navlinks {
  display: none;
  gap: 1.35rem;
  margin-left: auto;
  font-size: 0.9rem;
}
.navlinks a { color: var(--ink-soft); text-decoration: none; }
.navlinks a:hover { color: var(--ink); }
.nav .btn { margin-left: auto; }
.nav .btn-primary + .btn { margin-left: 1rem; }

@media (min-width: 780px) {
  .navlinks { display: flex; }
  .nav .btn { margin-left: 0; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}
.btn:active { transform: scale(0.985); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 88%, var(--ink)); transform: translateY(-1px); }
.btn-quiet {
  background: var(--surface);
  border-color: var(--line-strong);
  color: var(--ink);
}
.btn-quiet:hover { border-color: var(--ink-faint); transform: translateY(-1px); }
.cta-row { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.6rem; }

/* ---------- layout ---------- */
main { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: clamp(3.25rem, 7vw, 5.5rem) 0; border-top: 1px solid var(--line); }
.section:first-of-type { border-top: 0; }
.section-lede { color: var(--ink-soft); max-width: 62ch; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.9rem;
}
.subhead { font-size: 0.82rem; letter-spacing: 0.02em; text-transform: none; color: var(--ink-faint); font-weight: 500; margin-bottom: 0.85rem; }
.fineprint { font-size: 0.84rem; color: var(--ink-faint); }

/* ---------- hero ---------- */
.hero {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  padding: clamp(2.5rem, 6vw, 5.5rem) 0 clamp(2rem, 4vw, 3rem);
  align-items: center;
}
.hero .lede { font-size: clamp(1.05rem, 1.6vw, 1.22rem); color: var(--ink-soft); max-width: 34ch; }
.hero .eyebrow { max-width: none; }
@media (min-width: 900px) {
  .hero { grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); align-items: start; }
  .hero .lede { max-width: 40ch; }
  .hero .slot-portrait { margin-top: 0.4rem; }
}
.hero .slot-portrait { max-width: 340px; }

/* ---------- at a glance ---------- */
.facts {
  display: grid;
  gap: 1.25rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.fact { display: flex; flex-direction: column; gap: 0.2rem; }
.fact-value { font-family: var(--font-mono); font-size: 0.98rem; font-weight: 500; }
.fact-label { font-size: 0.84rem; color: var(--ink-faint); }
@media (min-width: 760px) {
  .facts { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; }
  .fact { padding: 0 1.4rem; }
  .fact:first-child { padding-left: 0; }
  .fact + .fact { border-left: 1px solid var(--line); }
}

/* ---------- case studies ---------- */
.case { padding-top: clamp(2.25rem, 4vw, 3.25rem); border-top: 1px solid var(--line); margin-top: clamp(2.25rem, 4vw, 3.25rem); }
.case:first-of-type { margin-top: 2rem; }
.case-head h3 { max-width: 30ch; }
.case-sub { color: var(--ink-soft); max-width: 62ch; margin: 0.35rem 0 0; }
.case-meta { font-family: var(--font-mono); font-size: 0.8rem; color: var(--ink-faint); margin: 0.6rem 0 1.1rem; }
.case-body { display: grid; gap: clamp(1.75rem, 3.5vw, 2.75rem); margin-top: 1.6rem; }
@media (min-width: 880px) {
  .case-body { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); }
  .case-split-reverse .case-body > .case-col { order: 2; }
  .case-split-reverse .case-body > .case-side { order: 1; }
  .case-body-tight { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
}
.case-col h4 { margin-top: 1.35rem; }
.case-col h4:first-child { margin-top: 0; }
.case-side { display: flex; flex-direction: column; gap: 1.25rem; }

.quickfacts { display: grid; gap: 0.9rem; margin: 1.5rem 0 0; }
.quickfacts > div { border-top: 1px solid var(--line); padding-top: 0.6rem; }
.quickfacts dt { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-faint); }
.quickfacts dd { margin: 0.15rem 0 0; font-size: 0.95rem; }
@media (min-width: 760px) { .quickfacts { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.25rem; } }

.more { margin-top: 1.2rem; border-top: 1px solid var(--line); padding-top: 0.7rem; }
.more summary { cursor: pointer; font-size: 0.9rem; font-weight: 500; color: var(--ink-soft); }
.more summary:hover { color: var(--ink); }
.more > * { margin-top: 0.9rem; }

.links { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.85rem; }
.links li { display: flex; flex-direction: column; gap: 0.1rem; }
.links a { font-weight: 500; }
.links span { font-size: 0.85rem; color: var(--ink-faint); }

/* band layout */
.case-band {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
}
@media (min-width: 880px) { .case-band { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); } }
.band-metrics { display: grid; gap: 1rem; }
.band-metrics .metric { border-left: 2px solid var(--accent); padding-left: 0.85rem; }

.metric { display: flex; flex-direction: column; }
.metric-value { font-family: var(--font-mono); font-size: 1.15rem; font-weight: 500; }
.metric-label { font-size: 0.82rem; color: var(--ink-faint); }
.metric-plain { border-top: 1px solid var(--line); padding-top: 0.6rem; }

/* spec tiles */
.specs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.spec { background: var(--surface); padding: 0.9rem 1rem; display: flex; flex-direction: column; gap: 0.15rem; }
.spec-value { font-family: var(--font-mono); font-size: 1.25rem; font-weight: 500; letter-spacing: -0.01em; }
.spec-label { font-size: 0.78rem; color: var(--ink-faint); }

/* chart */
.chart { margin: 0; padding: 1.1rem 1rem 0.9rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.chart figcaption { font-size: 0.82rem; color: var(--ink-soft); margin-bottom: 0.9rem; }
.chart-rows { display: grid; gap: 0.6rem; }
.chart-row { display: grid; grid-template-columns: 5.6rem minmax(0, 1fr) 3.2rem; align-items: center; gap: 0.6rem; }
.chart-name { font-size: 0.78rem; color: var(--ink-faint); }
.chart-track { background: var(--surface-sunk); border-radius: 3px; height: 8px; overflow: hidden; }
.chart-bar { display: block; height: 100%; width: 0; background: var(--accent); border-radius: 3px; transition: width 0.9s var(--ease); }
.chart-bar-warn { background: color-mix(in srgb, var(--accent) 55%, var(--ink-faint)); }
.chart-bar-target { background: var(--line-strong); }
.is-visible .chart-bar { width: calc(var(--pct) * 1%); }
.chart-num { font-family: var(--font-mono); font-size: 0.82rem; text-align: right; }
.chart-row-rule .chart-name, .chart-row-rule .chart-num { color: var(--ink-faint); }

/* media slots (replace with real <img> when photos are ready) */
.media-row { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin-top: 1.75rem; }
.media-row-compact { margin-top: 0; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.slot { margin: 0; display: flex; flex-direction: column; gap: 0.5rem; }
.slot-body {
  aspect-ratio: 4 / 3;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface-sunk);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  color: var(--ink-faint);
}
.slot-portrait .slot-body { aspect-ratio: 4 / 5; }
.slot-wide .slot-body { aspect-ratio: 4 / 3; }
.slot-tag { font-family: var(--font-mono); font-size: 0.76rem; letter-spacing: 0.04em; }
.slot-dim { font-family: var(--font-mono); font-size: 0.72rem; opacity: 0.85; }
.slot figcaption { font-size: 0.82rem; color: var(--ink-faint); }
.slot img { width: 100%; height: auto; border-radius: var(--radius); display: block; border: 1px solid var(--line); }

/* bench cards */
.bench { margin-top: clamp(2.5rem, 5vw, 3.5rem); padding-top: clamp(2rem, 4vw, 2.75rem); border-top: 1px solid var(--line); }
.bench-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(235px, 1fr)); margin-top: 1.25rem; }
.bench-card {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1.15rem 1.25rem 1.3rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.bench-card:hover { transform: translateY(-2px); border-color: var(--line-strong); box-shadow: var(--shadow); }
.bench-card h4 { margin: 0; font-family: var(--font-mono); font-size: 0.95rem; }
.bench-card p { font-size: 0.9rem; color: var(--ink-soft); }
.bench-tag { margin-top: auto; font-family: var(--font-mono); font-size: 0.72rem; color: var(--accent); }

/* ---------- end semester projects ---------- */
.sem-entry { margin-top: 1.75rem; display: grid; gap: clamp(1.5rem, 3vw, 2.5rem); }
@media (min-width: 900px) { .sem-entry { grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); align-items: start; } }
.video { margin: 0; display: flex; flex-direction: column; gap: 0.65rem; }
.video img { width: 100%; height: auto; display: block; border: 1px solid var(--line); border-radius: var(--radius); transition: border-color 0.2s var(--ease); }
.video a:hover img { border-color: var(--ink-faint); }
.video figcaption { display: flex; flex-direction: column; gap: 0.15rem; font-size: 0.88rem; }
.video figcaption span { color: var(--ink-faint); font-size: 0.82rem; }
.sem-when { font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent); margin-bottom: 0.5rem; }
.sem-body h3 { max-width: 32ch; }
.sem-body p { max-width: 60ch; }
.sem-entry .slot-body { aspect-ratio: 16 / 9; }
.meta-list { list-style: none; padding: 0; margin: 1.35rem 0 0; }
.meta-list li { display: grid; grid-template-columns: 8.5rem minmax(0, 1fr); gap: 0.25rem 1rem; padding: 0.6rem 0; border-top: 1px solid var(--line); font-size: 0.92rem; }
.meta-label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-faint); padding-top: 0.12rem; }
@media (max-width: 560px) { .meta-list li { grid-template-columns: minmax(0, 1fr); gap: 0.1rem; } }

/* ---------- timeline ---------- */
.timeline { list-style: none; padding: 0; margin: 0; }
.timeline li { display: grid; gap: 0.35rem; padding: 1.35rem 0; border-top: 1px solid var(--line); }
.timeline li:first-child { border-top: 0; padding-top: 0.5rem; }
.tl-when { font-family: var(--font-mono); font-size: 0.8rem; color: var(--ink-faint); }
.tl-what h3 { margin-bottom: 0.4rem; }
.tl-what p { max-width: 66ch; color: var(--ink-soft); font-size: 0.96rem; }
@media (min-width: 820px) {
  .timeline li { grid-template-columns: 11.5rem minmax(0, 1fr); gap: 1.75rem; padding: 1.6rem 0; }
  .tl-when { padding-top: 0.2rem; }
}

/* ---------- publications ---------- */
.pub-group { margin-top: 2rem; }
.pub-group:first-of-type { margin-top: 1.5rem; }
.pub-list { list-style: none; padding: 0; margin: 0; }
.pub-list li { display: grid; grid-template-columns: 6rem minmax(0, 1fr); gap: 1rem; padding: 1rem 0; border-top: 1px solid var(--line); }
@media (max-width: 620px) {
  .pub-list li { grid-template-columns: minmax(0, 1fr); gap: 0.35rem; }
  .pub-year { padding-top: 0; }
}
.pub-year { font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent); padding-top: 0.25rem; }
.pub-title { font-weight: 500; margin-bottom: 0.2rem; }
.pub-meta { font-size: 0.88rem; color: var(--ink-faint); margin-bottom: 0.35rem; }
.cert-list { color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- education ---------- */
.edu { display: grid; gap: clamp(1.5rem, 3vw, 2.5rem); }
@media (min-width: 820px) { .edu { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.edu-line { color: var(--ink-soft); font-size: 0.96rem; }

/* ---------- skills ---------- */
.skills { display: grid; gap: 1.1rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.skill-group { border-top: 1px solid var(--line); padding-top: 0.7rem; }
.skill-group h3 { font-size: 0.85rem; font-weight: 500; color: var(--ink-faint); margin-bottom: 0.3rem; }
.skill-group p { font-size: 0.95rem; margin: 0; }

/* ---------- contact ---------- */
.contact h2 { max-width: 26ch; }
.contact-links { list-style: none; display: flex; flex-wrap: wrap; gap: 1.25rem; padding: 0; margin: 1.75rem 0 0; font-size: 0.92rem; }
.contact-links li { margin: 0; }

/* ---------- footer ---------- */
.footer {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 2rem var(--gutter) 3rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
  font-size: 0.86rem;
  color: var(--ink-faint);
}
.footer p { margin: 0; }

/* ---------- reveal ---------- */
[data-reveal] { opacity: 0; transform: translateY(10px); transition: opacity 0.55s var(--ease), transform 0.55s var(--ease); }
[data-reveal].is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .chart-bar { transition: none; }
  .btn, .bench-card { transition: none; }
  .btn:hover, .bench-card:hover { transform: none; }
}

/* ---------- print ---------- */
@media print {
  .nav, .footer a { display: none; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .section, .case { border-top: 1px solid #bbb; page-break-inside: avoid; }
  .slot-body { border: 1px solid #bbb; background: #fff; }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
}