:root {
  color-scheme: dark;
  font-family: ui-monospace, Consolas, monospace;
  --cyan: #92f4ff;
  --ink: #fff7d7;
  --muted: #b8c6c8;
  --panel: #0d1b2c;
  --line: rgba(146, 244, 255, 0.28);
}

* { box-sizing: border-box; }
body { margin: 0; background: #0b1827; color: var(--ink); }
a { color: var(--cyan); }
.directory-shell { width: min(calc(100% - 2rem), 1180px); margin: 0 auto; padding: 2rem 0 4rem; }
.directory-nav { display: flex; flex-wrap: wrap; gap: .65rem 1.25rem; padding-bottom: 1.25rem; border-bottom: 1px solid var(--line); font-size: .82rem; }
.directory-nav a { text-decoration: none; }
.directory-hero { max-width: 850px; padding: clamp(2.5rem, 7vw, 5.5rem) 0 2.5rem; }
.eyebrow { color: var(--cyan); font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; }
h1 { margin: .65rem 0 1rem; font: 750 clamp(2.8rem, 8vw, 6.2rem)/.92 system-ui, sans-serif; letter-spacing: -.055em; }
.directory-hero p { max-width: 760px; color: var(--muted); font: 1rem/1.7 system-ui, sans-serif; }
.directory-stats { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1.3rem; }
.directory-stats span { padding: .35rem .6rem; border: 1px solid var(--line); color: var(--cyan); font-size: .72rem; }
.directory-controls { display: grid; grid-template-columns: minmax(220px, 1fr) auto; gap: 1rem; align-items: end; margin: 0 0 2.5rem; padding: 1rem; border: 1px solid var(--line); background: var(--panel); }
.directory-controls label { display: grid; gap: .45rem; color: var(--muted); font-size: .72rem; }
.directory-controls input { min-height: 44px; padding: .7rem .8rem; border: 1px solid var(--line); background: #11293c; color: var(--ink); font: inherit; }
.filter-buttons { display: flex; flex-wrap: wrap; gap: .45rem; }
.filter-buttons button { min-height: 44px; padding: .6rem .75rem; border: 1px solid var(--line); background: #11293c; color: var(--ink); font: inherit; cursor: pointer; }
.filter-buttons button[aria-pressed="true"] { background: var(--cyan); color: #07101c; }
.directory-status { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: .75rem; }
.lab-group { margin: 0 0 3.5rem; }
.lab-group[hidden], .lab-card[hidden] { display: none; }
.lab-group-header { display: flex; gap: 1rem; align-items: baseline; justify-content: space-between; border-bottom: 1px solid var(--line); }
.lab-group h2 { margin: 0 0 .75rem; font: 700 clamp(1.5rem, 4vw, 2.2rem)/1 system-ui, sans-serif; }
.lab-group-header span { color: var(--muted); font-size: .72rem; }
.lab-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin-top: 1px; background: var(--line); border: 1px solid var(--line); }
.lab-card { display: grid; min-height: 155px; padding: 1rem; background: #0d1b2c; color: var(--ink); text-decoration: none; }
.lab-card:hover, .lab-card:focus-visible { background: #11293c; outline: 2px solid var(--cyan); outline-offset: -2px; }
.lab-card strong { font: 700 1rem/1.2 system-ui, sans-serif; }
.lab-card small { align-self: end; color: var(--muted); line-height: 1.5; }
.lab-card span { align-self: end; color: var(--cyan); font-size: .72rem; }
.directory-empty { padding: 2rem; border: 1px solid var(--line); color: var(--muted); }
@media (max-width: 820px) { .lab-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) {
  .directory-controls { grid-template-columns: 1fr; }
  .filter-buttons { display: grid; grid-template-columns: 1fr 1fr; }
  .lab-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }