/* ── Reset & base ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f8f9fa;
  --surface: #ffffff;
  --border: #dee2e6;
  --primary: #2c7be5;
  --primary-dark: #1a5cb5;
  --text: #212529;
  --muted: #6c757d;
  --badge-bg: #e9ecef;
  --badge-text: #495057;
  --card-shadow: 0 1px 3px rgba(0,0,0,.08);
  --radius: 6px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ────────────────────────────────────────────────────── */
header {
  background: var(--primary);
  color: #fff;
  padding: 2rem 1.5rem 1.5rem;
  text-align: center;
}

header h1 { font-size: 1.9rem; font-weight: 700; letter-spacing: -.5px; }
header .subtitle { margin-top: .4rem; opacity: .88; font-size: .97rem; }

/* ── Main layout ───────────────────────────────────────────────── */
main {
  flex: 1;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1rem 2rem;
}

/* ── Controls ──────────────────────────────────────────────────── */
.controls {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.search-row {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
}

.search-row input[type="search"] {
  flex: 1;
  min-width: 200px;
  padding: .5rem .75rem;
  font-size: .97rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: border-color .15s;
}

.search-row input[type="search"]:focus { border-color: var(--primary); }

.filter-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
}

.filter-row label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--muted);
}

.filter-row select {
  padding: .4rem .7rem;
  font-size: .9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  outline: none;
  transition: border-color .15s;
}

.filter-row select:focus { border-color: var(--primary); }

/* ── Clear button ──────────────────────────────────────────────── */
#clear-btn {
  padding: .5rem 1rem;
  font-size: .9rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  transition: background .15s, color .15s;
  white-space: nowrap;
}

#clear-btn:hover { background: var(--badge-bg); color: var(--text); }

/* ── Status bar ────────────────────────────────────────────────── */
.status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .85rem;
  color: var(--muted);
  margin-bottom: .75rem;
  padding: 0 .25rem;
}

.load-time { font-style: italic; }

/* ── Results grid ──────────────────────────────────────────────── */
#results {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
}

/* ── Card ──────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: .5rem;
  transition: box-shadow .15s;
}

.card:hover { box-shadow: 0 3px 10px rgba(0,0,0,.12); }

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: .5rem;
}

.card-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  line-height: 1.3;
}

.card-name:hover { color: var(--primary-dark); text-decoration: underline; }

.card-type {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .6px;
  padding: .2rem .5rem;
  border-radius: 999px;
  white-space: nowrap;
  flex-shrink: 0;
}

.type-database  { background: #d1e7dd; color: #0a3622; }
.type-model     { background: #cfe2ff; color: #084298; }
.type-tool      { background: #fff3cd; color: #664d03; }
.type-api       { background: #f8d7da; color: #58151c; }
.type-benchmark { background: #e2d9f3; color: #3d0a91; }
.type-dataset   { background: #d3d3d3; color: #1c1c1c; }

.card-description {
  font-size: .88rem;
  color: var(--text);
  line-height: 1.5;
}

.card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem;
}

.badge {
  display: inline-block;
  font-size: .72rem;
  padding: .15rem .45rem;
  border-radius: 999px;
  background: var(--badge-bg);
  color: var(--badge-text);
  font-weight: 500;
}

.badge-task     { background: #dbeafe; color: #1e3a5f; }
.badge-modality { background: #dcfce7; color: #14532d; }
.badge-tag      { background: var(--badge-bg); color: var(--badge-text); }

.card-paper {
  font-size: .82rem;
  margin-top: auto;
}

.card-paper a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.card-paper a:hover { text-decoration: underline; }

/* ── Empty / error state ───────────────────────────────────────── */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 1rem;
  color: var(--muted);
  font-size: .97rem;
}

/* ── Footer ────────────────────────────────────────────────────── */
footer {
  text-align: center;
  padding: 1rem;
  font-size: .82rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: var(--surface);
}

footer a { color: var(--primary); }

/* ── Responsive tweaks ─────────────────────────────────────────── */
@media (max-width: 600px) {
  header h1 { font-size: 1.4rem; }
  #results { grid-template-columns: 1fr; }
}