:root {
  color-scheme: light dark;
  --bg: #111;
  --ink: #ddd;
  --accent: #999;
  --accent-hover: #bbb;
  --card: #1a1a1a;
  --card-hover: #222;
  --border: #333;
  --shadow: rgba(0, 0, 0, 0.4);
  --link-hover: rgba(255, 255, 255, 0.05);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f5f5;
    --ink: #222;
    --accent: #555;
    --accent-hover: #333;
    --card: #fff;
    --card-hover: #eee;
    --border: #ddd;
    --shadow: rgba(0, 0, 0, 0.08);
    --link-hover: rgba(0, 0, 0, 0.04);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  line-height: 1.6;
}

.card {
  max-width: 720px;
  width: 100%;
  padding: 48px;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: 0 4px 12px var(--shadow);
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin: 0 0 12px;
  text-align: center;
  color: var(--ink);
}

.subtitle {
  font-size: 1rem;
  color: var(--accent);
  margin: 0 0 32px;
  text-align: center;
}

h2 {
  font-size: 0.875rem;
  margin: 32px 0 16px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  color: var(--accent);
}

.links-container {
  display: grid;
  gap: 24px;
}

.category {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.link-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  color: var(--ink);
}

.link-card:hover {
  background: var(--card-hover);
}

.link-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
}

.link-content {
  flex: 1;
  min-width: 0;
}

.link-content strong {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
  word-break: break-word;
}

.link-content p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--accent);
  line-height: 1.5;
  word-break: break-word;
}

.boost-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--accent);
  color: var(--bg);
  font-size: 0.75rem;
  padding: 6px 12px;
  border-radius: 20px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .card {
    padding: 32px 24px;
  }

  h1 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .card {
    padding: 24px 20px;
  }

  h1 {
    font-size: 1.75rem;
  }

  .link-card {
    padding: 14px 16px;
    gap: 12px;
  }

  .link-icon {
    width: 36px;
    height: 36px;
  }

  .link-content strong {
    font-size: 0.95rem;
  }

  .link-content p {
    font-size: 0.85rem;
  }
}

.info-section {
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.info-section summary {
  font-size: 0.95rem;
  color: var(--accent);
  font-weight: 500;
  padding: 12px 0;
  cursor: pointer;
}

.info-section ul {
  margin: 16px 0 0;
  padding-left: 24px;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--accent);
}

.info-section li {
  margin-bottom: 8px;
}

.info-section code {
  background: var(--border);
  padding: 3px 8px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.85rem;
}

.copy-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 2px 6px;
  margin-left: 4px;
  vertical-align: middle;
}

.copy-btn:hover {
  background: var(--link-hover);
}