/* ── Design tokens ─────────────────────────────────────────────────────── */
:root {
  --bg:           #f1f5f9;
  --surface:      #ffffff;
  --surface-alt:  #f8fafc;
  --border:       #e2e8f0;
  --text:         #0f172a;
  --text-muted:   #64748b;
  --accent:       #6366f1;
  --accent-hover: #4f46e5;
  --radius:       10px;
  --radius-sm:    6px;
  --shadow:       0 1px 3px rgba(0,0,0,.07), 0 4px 12px rgba(0,0,0,.06);
  --shadow-hover: 0 4px 12px rgba(0,0,0,.1), 0 8px 24px rgba(0,0,0,.08);

  /* Badge colours */
  --badge-dashboard: #0ea5e9;
  --badge-panel:     #8b5cf6;
  --badge-source:    #10b981;
  --badge-panel-type: #f59e0b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:           #0f1117;
    --surface:      #1a1d2e;
    --surface-alt:  #141622;
    --border:       #2d3048;
    --text:         #e2e8f0;
    --text-muted:   #94a3b8;
    --shadow:       0 1px 3px rgba(0,0,0,.3), 0 4px 12px rgba(0,0,0,.25);
    --shadow-hover: 0 4px 12px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.3);
  }
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

button { cursor: pointer; font: inherit; }

[x-cloak] { display: none !important; }

/* ── Site header ───────────────────────────────────────────────────────── */
.site-header {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #1e3a5f 100%);
  color: #fff;
  padding: 2.5rem 1.5rem;
}
.site-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.site-header h1 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.15;
}
.site-header p {
  margin-top: .5rem;
  color: rgba(255,255,255,.75);
  font-size: .95rem;
}
.github-link {
  color: rgba(255,255,255,.8);
  flex-shrink: 0;
  transition: color .15s;
}
.github-link:hover { color: #fff; text-decoration: none; }

/* ── Filters bar ───────────────────────────────────────────────────────── */
.filters-bar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 10;
}
.filters-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  align-items: center;
}

.search-wrap {
  position: relative;
  flex: 1 1 220px;
  min-width: 180px;
}
.search-icon {
  position: absolute;
  left: .75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 16px;
  height: 16px;
  pointer-events: none;
}
.search-input {
  width: 100%;
  padding: .5rem .75rem .5rem 2.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-alt);
  color: var(--text);
  font-size: .875rem;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}

.filter-controls {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  align-items: center;
}
.filter-controls select {
  padding: .45rem .75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-alt);
  color: var(--text);
  font-size: .875rem;
  cursor: pointer;
  outline: none;
  transition: border-color .15s;
}
.filter-controls select:focus { border-color: var(--accent); }

.clear-btn {
  padding: .45rem .9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  font-size: .8rem;
  transition: all .15s;
}
.clear-btn:hover { border-color: var(--accent); color: var(--accent); }

.filter-tag-chip {
  max-width: 1200px;
  margin: .5rem auto 0;
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .8rem;
  color: var(--text-muted);
}
.filter-tag-chip .chip {
  background: var(--accent);
  color: #fff;
  padding: .2rem .55rem;
  border-radius: 99px;
  font-size: .75rem;
}
.filter-tag-chip button {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: .85rem;
  padding: 0 .2rem;
  line-height: 1;
}
.filter-tag-chip button:hover { color: var(--text); }

/* ── Results bar ───────────────────────────────────────────────────────── */
.results-bar {
  max-width: 1200px;
  margin: 1rem auto .25rem;
  padding: 0 1.5rem;
  font-size: .8rem;
  color: var(--text-muted);
}

/* ── Card grid ─────────────────────────────────────────────────────────── */
.card-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: .75rem 1.5rem 3rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

/* ── Card ──────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform .18s, box-shadow .18s, border-color .18s;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: #c7d2fe;
}

.card-image-wrap {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--surface-alt);
  cursor: zoom-in;
  border-bottom: 1px solid var(--border);
}
.card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .25s;
}
.card-image-wrap:hover .card-image { transform: scale(1.03); }
.card-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--border);
}

.card-body {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: .55rem;
  flex: 1;
}

.card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
}
.badge {
  font-size: .68rem;
  font-weight: 600;
  padding: .2rem .55rem;
  border-radius: 99px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: #fff;
}
.badge-dashboard  { background: var(--badge-dashboard); }
.badge-panel      { background: var(--badge-panel); }
.badge-source     { background: var(--badge-source); }
.badge-panel-type { background: var(--badge-panel-type); color: #1a1a1a; }

.card-title {
  font-size: .95rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}

.card-description {
  font-size: .82rem;
  color: var(--text-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-parent {
  font-size: .78rem;
  color: var(--text-muted);
}
.card-parent a { font-weight: 500; }

.card-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: .5rem;
  margin-top: auto;
  padding-top: .25rem;
}
.card-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;   /* prevent buttons stretching tall in a column context */
  align-content: flex-start;
  gap: .3rem;
  flex: 1;
}
.tag {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: .7rem;
  padding: .15rem .5rem;
  border-radius: 99px;
  cursor: pointer;
  transition: all .12s;
  white-space: nowrap;
}
.tag:hover       { border-color: var(--accent); color: var(--accent); }
.tag-active      { background: var(--accent); border-color: var(--accent); color: #fff; }
.tag-topic       { border-color: #a5b4fc; color: #818cf8; font-weight: 600; }
.tag-topic:hover { border-color: var(--accent); color: var(--accent); }

.card-link {
  font-size: .78rem;
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Empty state ───────────────────────────────────────────────────────── */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
}
.empty-state button {
  margin-top: 1rem;
  padding: .5rem 1.25rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: .875rem;
}

/* ── Modal / lightbox ──────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
  backdrop-filter: blur(4px);
}
.modal-box {
  background: var(--surface);
  border-radius: var(--radius);
  max-width: min(96vw, 1300px);
  width: 100%;
  max-height: 94vh;
  overflow: hidden;           /* children handle their own scroll */
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 25px 60px rgba(0,0,0,.4);
}
.modal-close {
  position: absolute;
  top: .75rem;
  right: .75rem;
  background: rgba(0,0,0,.45);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: 1rem;
  line-height: 1;
  z-index: 1;
  transition: background .15s;
}
.modal-close:hover { background: rgba(0,0,0,.75); }

.modal-content {
  display: grid;
  grid-template-columns: 1fr;
  flex: 1;
  min-height: 0;
}
@media (min-width: 640px) {
  .modal-content {
    grid-template-columns: 1fr 340px;
    min-height: 60vh;
  }
}

.modal-image-wrap {
  background: #000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  min-height: 240px;
}
.modal-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.modal-image-nav {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .5rem;
  color: rgba(255,255,255,.7);
  font-size: .8rem;
}
.modal-image-nav button {
  background: rgba(255,255,255,.1);
  border: none;
  color: #fff;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
  line-height: 1;
}
.modal-image-nav button:disabled { opacity: .3; cursor: default; }

.modal-meta {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  overflow-y: auto;           /* scroll meta independently if content is long */
  border-left: 1px solid var(--border);
}
.modal-meta h2 {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.3;
}
.modal-links {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}
.modal-link {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .82rem;
  font-weight: 500;
  color: var(--accent);
}
.modal-link:hover { color: var(--accent-hover); text-decoration: none; }
.modal-link-rel {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: .68rem;
  font-weight: 600;
  padding: .1rem .45rem;
  border-radius: 99px;
  text-transform: uppercase;
  letter-spacing: .04em;
  min-width: 3.5rem;
  text-align: center;
}

.modal-description {
  font-size: .85rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.modal-description p        { margin-bottom: .6rem; }
.modal-description p:last-child { margin-bottom: 0; }
.modal-description ul,
.modal-description ol       { padding-left: 1.25rem; margin-bottom: .6rem; }
.modal-description li       { margin-bottom: .2rem; }
.modal-description strong   { font-weight: 600; color: var(--text); }
.modal-description em       { font-style: italic; }
.modal-description a        { color: var(--accent); }
.modal-description a:hover  { color: var(--accent-hover); }
.modal-description code     { font-family: ui-monospace, monospace; font-size: .8em;
                               background: var(--surface-alt); padding: .1em .3em;
                               border-radius: 3px; }
.modal-description pre      { background: var(--surface-alt); padding: .75rem;
                               border-radius: var(--radius-sm); overflow-x: auto;
                               margin-bottom: .6rem; }
.modal-description pre code { background: none; padding: 0; }

/* ── Footer ────────────────────────────────────────────────────────────── */
.site-footer {
  margin-top: auto;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
  text-align: center;
  font-size: .8rem;
  color: var(--text-muted);
}

/* ── Responsive tweaks ─────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .site-header { padding: 1.5rem 1rem; }
  .filters-bar { padding: .75rem 1rem; }
  .card-grid   { padding: .75rem 1rem 2rem; gap: 1rem; }
  .card-grid   { grid-template-columns: 1fr; }
}