:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --surface: #ffffff;
  --text: #16181d;
  --text-muted: #5a5e68;
  --border: #e7e7ec;
  --accent: #ff5c6c;
  --accent-contrast: #ffffff;
  --success: #1a7f4b;
  --error: #c0392b;
  --radius: 20px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --tint-1: #ffd9dc;
  --tint-2: #c9f3ec;
  --tint-3: #ffe9b8;
  --card-badge-bg: rgba(255, 255, 255, 0.55);
  --font-display: "Fredoka", sans-serif;
  --font-body: "Karla", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181d;
    --surface: #1f2128;
    --text: #f1f1f5;
    --text-muted: #a7abb5;
    --border: #2c2f37;
    --accent: #ff7b88;
    --accent-contrast: #16181d;
    --success: #4ade80;
    --error: #f87171;
    --tint-1: #402530;
    --tint-2: #1c3a37;
    --tint-3: #3a2e1a;
    --card-badge-bg: rgba(255, 255, 255, 0.12);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

button {
  font: inherit;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
}

.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.3rem;
  color: var(--text);
  text-decoration: none;
}

main#app {
  max-width: 900px;
  margin: 0 auto;
  padding: 1rem 1.5rem 3rem;
}

#catalog-view h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.6rem;
  margin: 0;
}

.lede {
  color: var(--text-muted);
  margin-top: 0.4rem;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-top: 1.75rem;
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: transform 0.15s ease;
}

.tool-card:nth-child(3n + 1) {
  background: var(--tint-1);
}
.tool-card:nth-child(3n + 2) {
  background: var(--tint-2);
}
.tool-card:nth-child(3n + 3) {
  background: var(--tint-3);
}

.tool-card:hover,
.tool-card:focus-visible {
  transform: translateY(-2px);
}

.tool-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--card-badge-bg);
  color: var(--text);
}

.tool-card h2 {
  font-family: var(--font-display);
  margin: 0 0 0.35rem;
  font-size: 1.2rem;
  font-weight: 600;
}

.tool-card p {
  margin: 0;
  color: var(--text);
  opacity: 0.75;
  font-size: 0.95rem;
}

.tool-card-cta {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 700;
  font-size: 0.9rem;
}

.tool-card-cta .arrow {
  font-size: 1.05rem;
}

.btn-back {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0;
  margin-bottom: 1.25rem;
}

.site-footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.loading,
.error,
.empty {
  color: var(--text-muted);
}

.error {
  color: var(--error);
}