/* Lab surface shell · 20261024ARABIC */
:root {
  --lab-bg: #0a1210;
  --lab-panel: #0f1613;
  --lab-text: #e8f0ea;
  --lab-muted: rgba(232,240,234,0.72);
  --lab-gold: #d4b45a;
  --lab-teal: #1e7d5e;
  --lab-line: rgba(212,180,90,0.22);
}
html[data-theme="light"] {
  --lab-bg: #f3f7f5;
  --lab-panel: #ffffff;
  --lab-text: #13201a;
  --lab-muted: rgba(19,32,26,0.7);
  --lab-gold: #9a7b2e;
  --lab-line: rgba(45,90,70,0.18);
}
* { box-sizing: border-box; }
body.lab-surface {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(900px 400px at 50% -10%, rgba(31,166,122,0.08), transparent 55%), var(--lab-bg);
  color: var(--lab-text);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.45;
}
a { color: var(--lab-gold); }
.lab-topstrip {
  display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: space-between;
  padding: 0.4rem 1rem; font-size: 0.75rem;
  border-bottom: 1px solid var(--lab-line); background: rgba(0,0,0,0.15);
}
html[data-theme="light"] .lab-topstrip { background: rgba(255,255,255,0.7); }
.lab-topstrip a { color: var(--lab-muted); text-decoration: none; margin-right: 0.45rem; font-weight: 600; }
.lab-topstrip a:hover { color: var(--lab-gold); }
.lab-banner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.6rem;
  padding: 0.65rem 1rem; border-bottom: 1px solid var(--lab-line);
  background: linear-gradient(180deg, rgba(13,79,60,0.25), transparent);
}
.lab-brand { display: flex; align-items: center; gap: 0.55rem; text-decoration: none; color: var(--lab-gold); }
.lab-brand-mark {
  width: 2rem; height: 2rem; border-radius: 50%;
  background: linear-gradient(135deg, #0d4f3c, #1a6b52);
  color: #f0e6c8; display: grid; place-items: center; font-weight: 800; font-size: 0.95rem;
}
.lab-brand small { display: block; font-size: 0.62rem; letter-spacing: 0.08em; color: var(--lab-muted); }
.lab-brand strong { font-size: 0.95rem; }
.lab-banner-actions { display: flex; flex-wrap: wrap; gap: 0.3rem; align-items: center; }
.lab-theme-pill, .lab-link {
  border: 1px solid var(--lab-line); background: transparent; color: var(--lab-muted);
  border-radius: 999px; padding: 0.3rem 0.65rem; font-size: 0.72rem; font-weight: 700;
  cursor: pointer; text-decoration: none; font-family: inherit;
}
.lab-theme-pill[aria-pressed="true"], .lab-theme-pill:hover, .lab-link:hover {
  color: var(--lab-gold); border-color: rgba(212,180,90,0.45);
}
.lab-pills {
  display: flex; flex-wrap: wrap; gap: 0.25rem; padding: 0.55rem 1rem; max-width: 52rem; margin: 0 auto;
}
.lab-pills a {
  text-decoration: none; color: var(--lab-muted); font-size: 0.72rem; font-weight: 650;
  padding: 0.3rem 0.55rem; border-radius: 999px; border: 1px solid transparent;
}
.lab-pills a:hover, .lab-pills a[aria-current="page"] {
  color: var(--lab-gold); border-color: var(--lab-line); background: rgba(212,180,90,0.1);
}
.lab-main { max-width: 42rem; margin: 0 auto; padding: 0.75rem 1rem 2.5rem; }
.lab-foot {
  text-align: center; font-size: 0.72rem; color: var(--lab-muted);
  margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--lab-line);
}