/* ==========================================================================
   CAD History Page — minimal, modern styling
   ========================================================================== */

:root{
  --bg: #0b0f17;
  --panel: #111827;
  --panel-2: #0f172a;
  --text: #e5e7eb;
  --muted: #a3aab8;
  --border: rgba(255,255,255,.08);
  --accent: #f59e0b; /* orange */
  --accent-2: #fb923c;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 16px;
  --radius-sm: 12px;
  --max: 1080px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  font-family: var(--sans);
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(245,158,11,.22), transparent 60%),
    radial-gradient(900px 500px at 90% 10%, rgba(251,146,60,.14), transparent 55%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a{ color: inherit; text-decoration: none; }
a:hover{ color: var(--accent); }

.container{
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(11,15,23,.72);
  border-bottom: 1px solid var(--border);
}

.site-header .container{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand{
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark{
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(245,158,11,.22), rgba(251,146,60,.08));
  border: 1px solid rgba(245,158,11,.25);
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--accent);
}

.brand-text h1{
  margin: 0;
  font-size: 16px;
  line-height: 1.1;
}

.subtitle{
  margin: 2px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.nav{
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a{
  font-size: 13px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--muted);
}

.nav a:hover{
  color: var(--text);
  border-color: rgba(245,158,11,.25);
  background: rgba(245,158,11,.08);
}

.nav a.nav-cad{
  color: #FFB000;
  border-color: rgba(255,176,0,.4);
  background: rgba(255,176,0,.12);
  font-weight: 600;
}

.nav a.nav-cad:hover{
  background: rgba(255,176,0,.25);
  border-color: rgba(255,176,0,.6);
}

main.container{ padding: 26px 0 50px; }

.section{ margin-top: 38px; }
.section h2{
  margin: 0 0 14px;
  font-size: 22px;
  letter-spacing: .2px;
}

.hero{
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 18px;
  margin-top: 18px;
}

.hero-card{
  background: linear-gradient(180deg, rgba(17,24,39,.9), rgba(15,23,42,.88));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 18px 16px;
}

.hero-card h2{
  margin: 0 0 6px;
  font-size: 26px;
}

.hero-card p{
  margin: 0 0 14px;
  color: rgba(229,231,235,.92);
}

.hero-badges{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.badge{
  font-size: 12px;
  color: rgba(229,231,235,.9);
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
  padding: 6px 10px;
  border-radius: 999px;
}

.callout{
  border-radius: var(--radius);
  border: 1px solid rgba(245,158,11,.20);
  background: rgba(245,158,11,.08);
  padding: 16px;
}

.callout h3{
  margin: 0 0 8px;
  font-size: 15px;
  color: var(--accent);
}

.callout p{ margin: 0; color: rgba(229,231,235,.92); }

.info-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.info-card{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.03);
  border-radius: var(--radius-sm);
  padding: 14px;
}

.info-card h3{
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--accent-2);
}

.info-card p{ margin: 0; color: rgba(229,231,235,.92); }

.timeline-block{
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.timeline-item{
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 14px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.03);
}

.timeline-date{
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  padding-top: 2px;
  white-space: nowrap;
}

.timeline-body h3{
  margin: 0 0 6px;
  font-size: 16px;
}

.timeline-body p{ margin: 0 0 10px; color: rgba(229,231,235,.92); }
.timeline-body ul{ margin: 0; padding-left: 18px; color: rgba(229,231,235,.90); }
.timeline-body li{ margin: 4px 0; }

.note{
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(255,255,255,.16);
  background: rgba(255,255,255,.03);
  color: rgba(229,231,235,.92);
}

.split{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

.panel{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.03);
  border-radius: var(--radius-sm);
  padding: 14px;
}

.panel h3{ margin: 0 0 10px; font-size: 15px; color: var(--accent-2); }
.panel ul{ margin: 0; padding-left: 18px; color: rgba(229,231,235,.90); }
.panel li{ margin: 5px 0; }

.table-wrap{
  margin-top: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  overflow: hidden;
}

.table{
  width: 100%;
  border-collapse: collapse;
  background: rgba(255,255,255,.02);
}

.table th, .table td{
  text-align: left;
  padding: 12px 12px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.table th{
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: rgba(229,231,235,.85);
  background: rgba(255,255,255,.03);
}

.table td{ color: rgba(229,231,235,.92); }

.chips{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 12px 0 6px;
}

.chip{
  border: 1px solid rgba(245,158,11,.22);
  background: rgba(245,158,11,.07);
  color: rgba(229,231,235,.92);
  padding: 7px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-family: var(--mono);
}

.muted{ color: var(--muted); }

.footer{
  margin-top: 46px;
  border-top: 1px solid var(--border);
  padding: 18px 0;
}

.footer-inner{
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  color: rgba(229,231,235,.82);
  font-size: 13px;
}

.sep{ color: rgba(255,255,255,.18); }

/* Responsive */
@media (max-width: 900px){
  .hero{ grid-template-columns: 1fr; }
  .info-grid{ grid-template-columns: 1fr; }
  .split{ grid-template-columns: 1fr; }
  .timeline-item{ grid-template-columns: 1fr; }
  .timeline-date{ white-space: normal; }
  .site-header .container{ flex-direction: column; align-items: flex-start; }
  .nav{ justify-content: flex-start; }
}