/* lmarchetti.com — shared styles
   Themes: dark (default) and light, switched with [data-theme] on <html>. */

:root,
:root[data-theme="dark"] {
  --bg: #080C16;
  --text: #E8ECF4;
  --muted: #B7C0D1;
  --subtle: #8C96AA;
  --line: #1F2839;
  --strong-line: #3A4458;
  --card: #0E1424;
  --card-line: #1F2839;
  --accent: #6EE7EF;
  --on-accent: #06101A;
  --mesh-line: #27324A;
  --mesh-opacity: 0.75;
  --spark: #F07AC8;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #F5F4F0;
  --text: #15181D;
  --muted: #454A52;
  --subtle: #5A5F66;
  --line: #D9D6CE;
  --strong-line: #15181D;
  --card: #FFFFFF;
  --card-line: #E2DFD7;
  --accent: #1D3F8F;
  --on-accent: #FFFFFF;
  --mesh-line: #D9D5CB;
  --mesh-opacity: 0.45;
  --spark: #B8327A;
  color-scheme: light;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  transition: background-color .2s ease, color .2s ease;
}

a { color: inherit; }
img { max-width: 100%; height: auto; display: block; }

.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }

.wrap {
  width: 100%;
  max-width: 1248px;
  margin: 0 auto;
  padding: 0 48px;
}

.skip {
  position: absolute; left: -9999px; top: 8px;
  background: var(--accent); color: var(--on-accent);
  padding: 8px 14px; border-radius: 6px; z-index: 10;
}
.skip:focus { left: 16px; }

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

/* ---------- Header ---------- */
.site-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 28px 0 20px;
  border-bottom: 1px solid var(--line);
}
.brand { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; text-decoration: none; }
.nav { display: flex; align-items: center; gap: 32px; font-size: 15px; font-weight: 500; }
.nav a { text-decoration: none; color: var(--text); padding: 6px 0; }
.nav a:hover { color: var(--accent); }
.nav a[aria-current="page"] { color: var(--accent); }

.theme-toggle {
  width: 44px; height: 44px;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; color: var(--text);
  border: 1px solid var(--line); border-radius: 999px;
  cursor: pointer;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }
.theme-toggle .icon-sun { display: inline; }
.theme-toggle .icon-moon { display: none; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: inline; }

/* ---------- Common blocks ---------- */
.eyebrow {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--accent);
}
.label {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--subtle);
}

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 48px; padding: 0 24px;
  border-radius: 999px; font-size: 15px; font-weight: 600;
  text-decoration: none; border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { border-color: var(--strong-line); color: var(--text); font-weight: 500; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

main { padding-bottom: 80px; }

/* ---------- Home hero ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 600px) minmax(0, 1fr);
  gap: 56px; align-items: center;
  padding: 72px 0 64px;
}
.hero-text { display: flex; flex-direction: column; gap: 24px; }
.hero h1 {
  margin: 0; font-size: clamp(42px, 6vw, 64px); line-height: 1.03;
  font-weight: 600; letter-spacing: -0.03em;
}
.hero p { margin: 0; font-size: 19px; color: var(--muted); }

.mesh { margin: 0; display: flex; flex-direction: column; gap: 12px; }
.mesh svg { width: 100%; height: auto; }
.mesh .wg { stroke: var(--mesh-line); stroke-width: 2; fill: none; }
.mesh .mzi { stroke: var(--accent); stroke-width: 2.5; fill: none; stroke-opacity: var(--mesh-opacity); }
.mesh .light { stroke: var(--spark); stroke-width: 3.5; fill: none; stroke-linecap: round; }
.mesh .light-dot { fill: var(--spark); }
.mesh .pulse {
  stroke: var(--spark); stroke-width: 6; fill: none; stroke-linecap: round;
  stroke-dasharray: 40 1400; stroke-dashoffset: 1440;
  filter: drop-shadow(0 0 6px var(--spark));
  animation: travel 3.6s linear infinite;
}
@keyframes travel { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) { .mesh .pulse { display: none; } }
.mesh figcaption { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 12px; color: var(--subtle); }

/* ---------- Cards ---------- */
.section { padding: 24px 0 8px; display: flex; flex-direction: column; gap: 16px; }
.section + .section { padding-top: 56px; }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card {
  display: flex; flex-direction: column; gap: 10px;
  padding: 24px; background: var(--card);
  border: 1px solid var(--card-line); border-radius: 12px;
  text-decoration: none; color: var(--text);
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card .kicker { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 13px; color: var(--accent); }
.card .title { font-size: 20px; font-weight: 600; line-height: 1.3; }
.card .meta { font-size: 14px; color: var(--subtle); }

/* ---------- Page heads ---------- */
.page-head { padding: 64px 0 40px; display: flex; flex-direction: column; gap: 16px; max-width: 820px; }
.page-head h1 { margin: 0; font-size: clamp(36px, 5vw, 52px); line-height: 1.08; font-weight: 600; letter-spacing: -0.025em; }
.page-head p { margin: 0; font-size: 19px; color: var(--muted); }

/* ---------- Project detail ---------- */
.project { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 64px; align-items: start; }
.prose { max-width: 720px; }
.prose h2 { font-size: 26px; line-height: 1.25; letter-spacing: -0.015em; margin: 48px 0 12px; font-weight: 600; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: var(--muted); }
.prose strong { color: var(--text); font-weight: 600; }
.prose ul { padding-left: 20px; }
.prose li { margin-bottom: 6px; }
.placeholder {
  border: 1px dashed var(--strong-line); border-radius: 12px;
  padding: 40px 24px; text-align: center; color: var(--subtle);
  font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 13px;
  margin: 24px 0;
}
.facts {
  position: sticky; top: 24px;
  display: flex; flex-direction: column; gap: 18px;
  padding: 24px; background: var(--card);
  border: 1px solid var(--card-line); border-radius: 12px;
}
.facts dl { margin: 0; display: flex; flex-direction: column; gap: 16px; }
.facts dt { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--subtle); }
.facts dd { margin: 2px 0 0; font-size: 15px; }
.back { font-size: 15px; text-decoration: none; color: var(--subtle); }
.back:hover { color: var(--accent); }

.next-project {
  margin-top: 72px; padding-top: 24px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
}
.next-project a { font-size: 20px; font-weight: 600; text-decoration: none; }
.next-project a:hover { color: var(--accent); }

/* ---------- Timeline ---------- */
.timeline { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.timeline li {
  display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 32px;
  padding: 28px 0; border-bottom: 1px solid var(--line);
}
.timeline .when { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 13px; color: var(--subtle); padding-top: 4px; }
.timeline h3 { margin: 0; font-size: 20px; font-weight: 600; line-height: 1.3; }
.timeline .where { color: var(--accent); font-size: 15px; margin: 2px 0 8px; }
.timeline p, .timeline ul { margin: 0; color: var(--muted); }
.timeline ul { padding-left: 20px; }

.skills { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.skills .card:hover { transform: none; border-color: var(--card-line); }
.skills p { margin: 0; color: var(--muted); font-size: 15px; }

/* ---------- Contact ---------- */
.contact-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); max-width: 820px; }
.contact-list li { border-bottom: 1px solid var(--line); }
.contact-list a {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 24px 0; text-decoration: none; font-size: clamp(20px, 3vw, 28px); font-weight: 500;
}
.contact-list a:hover { color: var(--accent); }
.contact-list .label { flex-shrink: 0; }

/* ---------- Footer ---------- */
.site-footer {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 20px 0 40px; border-top: 1px solid var(--line);
  font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 13px; color: var(--subtle);
}
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--accent); }
.site-footer .links { display: flex; gap: 20px; flex-wrap: wrap; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .hero { grid-template-columns: 1fr; padding: 48px 0; gap: 40px; }
  .cards, .skills { grid-template-columns: 1fr; }
  .project { grid-template-columns: 1fr; gap: 40px; }
  .facts { position: static; order: -1; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .site-header { flex-wrap: wrap; gap: 12px; padding: 20px 0 16px; }
  .nav { gap: 18px; font-size: 14px; flex-wrap: wrap; }
  .timeline li { grid-template-columns: 1fr; gap: 6px; }
  .page-head { padding: 40px 0 28px; }
  .hero p, .page-head p { font-size: 17px; }
}
