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

/* ── Tokens ───────────────────────────────────────────────────────────────── */
:root {
  --font-sans: system-ui, -apple-system, 'Segoe UI', sans-serif;
  --radius: 8px;
  --radius-sm: 4px;
  --transition: 0.15s ease;
  --aws-orange: #ff9900;
  --aws-orange-dark: #e88a00;
  --aws-orange-light: #ffac33;
}

[data-theme='dark'] {
  --bg: #0a0f1a;
  --bg-card: #111827;
  --bg-card-hover: #1a2235;
  --bg-header: #060b14;
  --bg-input: #111827;
  --border: #1f2d42;
  --border-focus: var(--aws-orange);
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --accent: var(--aws-orange);
  --accent-hover: var(--aws-orange-light);
  --chip-bg: #1a2235;
  --chip-active-bg: var(--aws-orange);
  --chip-active-text: #000;
  --badge-bg: #1f2d42;
  --badge-text: var(--aws-orange);
  --abbrev-color: var(--aws-orange);
  --related-bg: #1f2d42;
  --related-text: #93c5fd;
  --launched-color: #64748b;
  --footer-border: #1f2d42;
  --footer-text: #475569;
  --shadow-card: 0 2px 8px rgba(0,0,0,0.4);
  --shadow-card-hover: 0 4px 20px rgba(255,153,0,0.12);
}

[data-theme='light'] {
  --bg: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-header: #ffffff;
  --bg-input: #ffffff;
  --border: #e2e8f0;
  --border-focus: var(--aws-orange-dark);
  --text: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;
  --accent: var(--aws-orange-dark);
  --accent-hover: var(--aws-orange);
  --chip-bg: #f1f5f9;
  --chip-active-bg: var(--aws-orange-dark);
  --chip-active-text: #fff;
  --badge-bg: #fff7ed;
  --badge-text: var(--aws-orange-dark);
  --abbrev-color: var(--aws-orange-dark);
  --related-bg: #eff6ff;
  --related-text: #1d4ed8;
  --launched-color: #94a3b8;
  --footer-border: #e2e8f0;
  --footer-text: #94a3b8;
  --shadow-card: 0 1px 4px rgba(0,0,0,0.08);
  --shadow-card-hover: 0 4px 16px rgba(232,138,0,0.15);
}

/* ── Base ─────────────────────────────────────────────────────────────────── */
html {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

/* ── Header ───────────────────────────────────────────────────────────────── */
.site-header {
  background: var(--bg-header);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.header-branding {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.aws-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--aws-orange);
  color: #000;
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  padding: 0.3rem 0.55rem;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.header-branding h1 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
}

.header-branding p {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.1rem;
}

.header-controls {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.ctrl-btn {
  background: var(--chip-bg);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.ctrl-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Main content ─────────────────────────────────────────────────────────── */
.main-content {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 3rem;
}

/* ── Search bar ───────────────────────────────────────────────────────────── */
.search-bar-wrap {
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.search-icon {
  position: absolute;
  left: 0.85rem;
  font-size: 1.1rem;
  color: var(--text-dim);
  pointer-events: none;
  line-height: 1;
}

#search {
  width: 100%;
  padding: 0.7rem 4rem 0.7rem 2.5rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
#search:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(255,153,0,0.15);
}
#search::placeholder {
  color: var(--text-dim);
}
#search::-webkit-search-cancel-button {
  cursor: pointer;
}

.service-count {
  position: absolute;
  right: 0.85rem;
  font-size: 0.75rem;
  color: var(--text-dim);
  pointer-events: none;
}

/* ── Category chips ───────────────────────────────────────────────────────── */
.category-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.5rem;
}

.cat-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--chip-bg);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.cat-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.cat-chip.active {
  background: var(--chip-active-bg);
  border-color: var(--chip-active-bg);
  color: var(--chip-active-text);
  font-weight: 600;
}

/* ── Cards grid ───────────────────────────────────────────────────────────── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

/* ── Service card ─────────────────────────────────────────────────────────── */
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
  position: relative;
  outline: none;
}

.service-card:hover,
.service-card:focus-visible {
  border-color: var(--accent);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-1px);
}

.service-card.expanded {
  border-color: var(--accent);
  box-shadow: var(--shadow-card-hover);
}

/* Card header row */
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  gap: 0.5rem;
}

.card-abbrev-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.card-abbrev {
  font-size: 1rem;
  font-weight: 800;
  color: var(--abbrev-color);
  letter-spacing: 0.02em;
}

.card-category-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  background: var(--badge-bg);
  color: var(--badge-text);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
}

.card-launched {
  font-size: 0.7rem;
  color: var(--launched-color);
  white-space: nowrap;
  flex-shrink: 0;
}

/* Card body */
.card-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text);
  line-height: 1.55;
  margin-bottom: 0.75rem;
}

/* Card details (expanded) */
.card-details {
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
  margin-top: 0.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.card-details.hidden {
  display: none;
}

.meta-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.use-cases-list {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.card-related {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
}

.related-tag {
  display: inline-block;
  background: var(--related-bg);
  color: var(--related-text);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: opacity var(--transition);
}
.related-tag:hover {
  opacity: 0.75;
  text-decoration: underline;
}

/* Expand button */
.card-expand-btn {
  position: absolute;
  bottom: 0.6rem;
  right: 0.75rem;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 0.65rem;
  cursor: pointer;
  padding: 0.2rem;
  line-height: 1;
  transition: color var(--transition);
}
.card-expand-btn:hover {
  color: var(--accent);
}

/* ── No results ───────────────────────────────────────────────────────────── */
.no-results {
  text-align: center;
  padding: 4rem 1rem;
}
.no-results-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}
.no-results-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.4rem;
}
.no-results-hint {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ── Footer ───────────────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--footer-border);
  text-align: center;
  padding: 1rem;
  font-size: 0.78rem;
  color: var(--footer-text);
}

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .header-branding h1 {
    font-size: 0.95rem;
  }
  .header-branding p {
    display: none;
  }
  .main-content {
    padding: 1rem 1rem 2rem;
  }
  .cards-grid {
    grid-template-columns: 1fr;
  }
}