/* ============================================================
   scar8969.github.io — design system
   Editorial engineering: warm paper, ink, one signal accent.
   Distinctive, not a template.
   ============================================================ */

:root {
  /* palette — warm paper + ink + a single signal orange */
  --paper: #f7f4ee;
  --paper-deep: #efe9df;
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-faint: #8a8578;
  --line: #d9d2c4;
  --line-soft: #e6e0d2;
  --accent: #e85d2a;      /* signal orange */
  --accent-deep: #c94a1e;
  --accent-soft: #fdeee6;
  --green: #1a7f4b;

  /* typography */
  --font-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, monospace;

  --radius: 8px;
  --maxw: 1080px;
  --shadow: 0 1px 3px rgba(26,26,26,0.06), 0 8px 24px rgba(26,26,26,0.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 244, 238, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}
.brand .accent { color: var(--accent); }
.nav-links { display: flex; gap: 2px; }
.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}
.nav-links a:hover { color: var(--ink); background: var(--paper-deep); }
.nav-links a.active { color: var(--ink); background: var(--paper-deep); font-weight: 600; }

/* ---------- hero ---------- */
.hero {
  padding: 88px 0 72px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
}
.hero h1 .underline {
  background-image: linear-gradient(transparent 62%, var(--accent-soft) 62%, var(--accent-soft) 92%, transparent 92%);
}
.hero-sub {
  margin-top: 22px;
  color: var(--ink-soft);
  font-size: 1.1rem;
  max-width: 52ch;
}
.hero-cta { margin-top: 32px; display: flex; gap: 12px; flex-wrap: wrap; }

/* terminal widget — the signature hero element */
.terminal {
  background: #14161a;
  border-radius: 10px;
  box-shadow: var(--shadow);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
}
.terminal .bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: #1d2026;
  border-bottom: 1px solid #2a2e36;
}
.terminal .bar .dot { width: 10px; height: 10px; border-radius: 50%; }
.terminal .bar .dot:nth-child(1) { background: #ff5f57; }
.terminal .bar .dot:nth-child(2) { background: #febc2e; }
.terminal .bar .dot:nth-child(3) { background: #28c840; }
.terminal .bar .title { margin-left: 8px; color: #6b7280; font-size: 0.72rem; }
.terminal .body { padding: 18px 20px; color: #d1d5db; white-space: pre; }
.terminal .body .p { color: #8a8f98; }
.terminal .body .c { color: #e85d2a; }
.terminal .body .g { color: #4ade80; }
.terminal .body .b { color: #7dd3fc; }
.terminal .body .cursor { display: inline-block; width: 8px; height: 1.1em; background: #d1d5db; animation: blink 1s step-end infinite; vertical-align: -0.15em; }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s, background 0.12s;
}
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(26,26,26,0.2); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-2px); }

/* ---------- sections ---------- */
.section { padding: 72px 0; }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 36px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.section-head .num { color: var(--accent); font-family: var(--font-mono); font-size: 0.85rem; margin-right: 10px; }
.section-head .link { color: var(--ink-soft); text-decoration: none; font-size: 0.9rem; font-weight: 500; }
.section-head .link:hover { color: var(--ink); }

/* ---------- featured project ---------- */
.featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s, box-shadow 0.15s;
}
.featured:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(26,26,26,0.1); }
.featured .visual {
  background: var(--paper-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 260px;
  padding: 24px;
}
.featured .visual svg { max-width: 100%; height: auto; }
.featured .body { padding: 32px; display: flex; flex-direction: column; gap: 12px; }
.featured .tag-row { display: flex; gap: 8px; flex-wrap: wrap; }
.featured .tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-deep);
  background: var(--accent-soft);
  padding: 3px 9px;
  border-radius: 20px;
}
.featured h3 { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; }
.featured p { color: var(--ink-soft); font-size: 0.98rem; flex: 1; }
.featured .meta { color: var(--ink-faint); font-size: 0.8rem; font-family: var(--font-mono); }
.featured .cta { color: var(--accent); font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 6px; }

/* ---------- project grid ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
  text-decoration: none;
  color: inherit;
  position: relative;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--line); }
.card .tag-row { display: flex; gap: 8px; flex-wrap: wrap; }
.card .tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-soft);
  background: var(--paper-deep);
  padding: 3px 8px;
  border-radius: 20px;
}
.card h3 { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; display: flex; align-items: center; justify-content: space-between; }
.card h3 .arrow { color: var(--accent); opacity: 0; transform: translateX(-4px); transition: opacity 0.15s, transform 0.15s; }
.card:hover h3 .arrow { opacity: 1; transform: translateX(0); }
.card p { color: var(--ink-soft); font-size: 0.92rem; flex: 1; }
.card .meta { color: var(--ink-faint); font-size: 0.78rem; font-family: var(--font-mono); }

/* ---------- capability triad ---------- */
.triad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.triad-item {
  border-top: 3px solid var(--ink);
  padding-top: 18px;
}
.triad-item .n { font-family: var(--font-mono); color: var(--accent); font-size: 0.8rem; }
.triad-item h3 { font-family: var(--font-display); font-size: 1.2rem; font-weight: 700; margin: 8px 0; }
.triad-item p { color: var(--ink-soft); font-size: 0.92rem; }

/* ---------- prose ---------- */
.prose { max-width: 72ch; color: var(--ink-soft); }
.prose p { margin-bottom: 16px; }
.prose strong { color: var(--ink); }
.prose h3 { color: var(--ink); font-family: var(--font-display); font-size: 1.2rem; margin: 28px 0 12px; }
.prose ul { margin: 0 0 16px 20px; }
.prose li { margin-bottom: 6px; }
.prose a { color: var(--accent-deep); text-decoration: none; }
.prose a:hover { text-decoration: underline; }

/* ---------- timeline ---------- */
.timeline { border-left: 1px solid var(--line); margin-left: 8px; padding-left: 28px; }
.tl-item { position: relative; margin-bottom: 32px; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--paper);
}
.tl-item .when { font-family: var(--font-mono); font-size: 0.75rem; color: var(--accent); }
.tl-item h4 { font-family: var(--font-display); font-size: 1.1rem; color: var(--ink); margin: 4px 0 2px; }
.tl-item .org { color: var(--ink-soft); font-size: 0.92rem; }
.tl-item p { color: var(--ink-soft); font-size: 0.92rem; margin-top: 6px; }

/* ---------- contact ---------- */
.contact-links { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-top: 24px; }
.contact-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color 0.15s, transform 0.15s;
}
.contact-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.contact-card .k { color: var(--ink-faint); font-size: 0.72rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; }
.contact-card .v { color: var(--ink); font-size: 0.95rem; word-break: break-all; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0; margin-top: 40px; }
.site-footer .container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.site-footer p { color: var(--ink-faint); font-size: 0.85rem; }
.site-footer a { color: var(--ink-soft); text-decoration: none; }
.site-footer a:hover { color: var(--ink); }

/* ---------- responsive ---------- */
@media (max-width: 760px) {
  .hero { padding: 56px 0 48px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .nav-links a { padding: 8px 8px; font-size: 0.82rem; }
  .section { padding: 48px 0; }
  .grid { grid-template-columns: 1fr; }
  .triad { grid-template-columns: 1fr; }
  .featured { grid-template-columns: 1fr; }
  .featured .visual { min-height: 200px; }
}

/* ---------- utilities ---------- */
.muted { color: var(--ink-soft); }
.mono { font-family: var(--font-mono); }
.accent { color: var(--accent); }