/* Marcu Adrian — site styles (Direction A: Terminal Engineer, warmed)
   Voice dial 70: keep the mono/terminal scaffolding, but copy is human and spacing breathes.
*/

@import url('https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600;700;800&family=Geist+Mono:wght@400;500;600&family=Instrument+Serif:ital@0;1&display=swap');

:root {
  --teal: #1ec8c0;
  --teal-deep: #0f9a94;
  --orange: #f59321;
  --orange-deep: #d97a0d;
  --green: #4ade80;

  --font-sans: 'Geist', ui-sans-serif, system-ui, sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, 'JetBrains Mono', monospace;
  --font-serif: 'Instrument Serif', Georgia, serif;
}

[data-theme="dark"] {
  --bg: #0a0d14;
  --bg-2: #0f131c;
  --bg-3: #161b27;
  --fg: #e8ecf3;
  --fg-mute: #8892a8;
  --fg-dim: #5a6378;
  --line: rgba(255,255,255,.08);
  --line-strong: rgba(255,255,255,.16);
  --code-grid: rgba(255,255,255,.025);
}

[data-theme="light"] {
  --bg: #faf7f2;
  --bg-2: #f1ece2;
  --bg-3: #e9e2d4;
  --fg: #15110b;
  --fg-mute: #4a4538;
  --fg-dim: #7a7361;
  --line: rgba(21,17,11,.10);
  --line-strong: rgba(21,17,11,.18);
  --code-grid: rgba(21,17,11,.04);
}

[data-accent="teal"]   { --accent: var(--teal);   --accent-2: var(--orange); --accent-deep: var(--teal-deep); }
[data-accent="orange"] { --accent: var(--orange); --accent-2: var(--teal);   --accent-deep: var(--orange-deep); }

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  letter-spacing: -0.01em;
  transition: background .25s ease, color .25s ease;
}
a { color: inherit; text-decoration: none; }
p { margin: 0; }
h1, h2, h3, h4 { margin: 0; font-weight: inherit; }

/* — Code grid — */
.codegrid {
  background-image:
    linear-gradient(to right, var(--code-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--code-grid) 1px, transparent 1px);
  background-size: 32px 32px;
}

/* — Layout primitives — */
.shell {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 40px;
}

@media (max-width: 1100px) {
  .shell[style*="grid-template-columns"],
  .shell > [style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
    gap: 48px !important;
  }
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-mute);
}

/* — Top nav — */
.nav {
  position: sticky;
  top: 0; z-index: 50;
  backdrop-filter: blur(12px) saturate(160%);
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 40px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  max-width: 1240px;
  margin: 0 auto;
}
.nav-brand { display: flex; align-items: center; gap: 12px; font-weight: 600; }
.nav-brand .path { color: var(--fg-mute); font-weight: 400; }
.nav-links { display: flex; gap: 24px; color: var(--fg-mute); }
.nav-links a { transition: color .15s; cursor: pointer; }
.nav-links a:hover, .nav-links a.active { color: var(--accent); }
.nav-status { display: flex; align-items: center; gap: 8px; color: var(--fg-mute); white-space: nowrap; }
@media (max-width: 1024px) {
  .nav-status { display: none; }
}
.dot {
  width: 7px; height: 7px; border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 10px color-mix(in oklab, var(--green) 70%, transparent);
}

/* — Theme toggle buttons — */
.theme-btn {
  appearance: none;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--fg-mute);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 6px;
  cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
  line-height: 1;
}
.theme-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: color-mix(in oklab, var(--accent) 8%, transparent);
}

/* — Section base — */
section {
  padding: 120px 0;
  position: relative;
}
section + section { border-top: 1px solid var(--line); }

.section-tag {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 28px;
  white-space: nowrap;
}
.section-tag .sigil {
  color: var(--accent);
  display: inline-block;
}

/* — Buttons — */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px; border-radius: 8px;
  font-family: var(--font-mono); font-size: 13px; font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer; border: none;
  transition: transform .12s, background .15s, box-shadow .15s;
}
.btn-primary {
  background: var(--accent); color: var(--bg);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 24px -8px color-mix(in oklab, var(--accent) 60%, transparent); }
.btn-ghost {
  background: transparent; color: var(--fg);
  border: 1px solid var(--line-strong);
}
.btn-ghost:hover { background: var(--bg-2); }

/* — Cards — */
.card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  transition: border-color .15s, transform .15s, background .15s;
}
.card:hover { border-color: var(--line-strong); }

/* — Terminal block — */
.terminal {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  font-family: var(--font-mono);
}
.term-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  font-size: 11px; color: var(--fg-mute);
}
.term-dot { width: 10px; height: 10px; border-radius: 10px; }
.term-body {
  padding: 20px;
  font-size: 13px; line-height: 1.7;
}
.term-body .prompt { color: var(--accent); }
.term-body .out { color: var(--fg-mute); padding-left: 14px; }
.term-body .out .v { color: var(--fg); }

/* — Cursor — */
.cursor {
  display: inline-block; width: 0.5em; height: 1em;
  background: currentColor; vertical-align: -0.15em;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* — Footer — */
footer {
  border-top: 1px solid var(--line);
  padding: 40px 0 60px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-mute);
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: flex-end;
  gap: 32px; flex-wrap: wrap;
}

/* — Reveal on scroll — */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* ── Mobile (≤768px) ──────────────────────────────── */
@media (max-width: 768px) {
  /* Shell */
  .shell { padding: 0 20px; }

  /* Nav */
  .nav-inner { padding: 14px 20px; }
  .nav-links { display: none; }
  .nav-brand .path { display: none; }

  /* Sections */
  section { padding: 72px 0; }

  /* Grid overrides: collapse all multi-col grids */
  .shell[style*="grid-template-columns"],
  .shell > [style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
    gap: 40px !important;
  }

  /* Hide hero terminal on mobile — hero text + CTAs are enough */
  .hero-terminal { display: none; }

  /* About: un-stick the left column on mobile */
  [style*="position: sticky"] { position: static !important; }

  /* Work table: collapse to card stack */
  .work-head { display: none; }
  .work-row {
    display: flex !important;
    flex-direction: column !important;
    gap: 6px !important;
    padding: 20px !important;
    align-items: flex-start !important;
  }
  .work-num { display: none; }
  .work-stack { font-size: 11px !important; color: var(--fg-dim) !important; }
  .work-arrow { display: none; }

  /* Buttons: allow wrapping */
  .btn { padding: 12px 18px; font-size: 12px; }

  /* Footer */
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
}

@media (max-width: 480px) {
  .shell { padding: 0 16px; }
  .nav-inner { padding: 12px 16px; }
  section { padding: 56px 0; }
  .theme-btn { font-size: 10px; padding: 3px 6px; }
}