* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #09090b;
  --bg-secondary: #18181b;
  --bg-card: #1c1c21;
  --bg-card-hover: #27272a;
  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent: #f43f5e;
  --accent-hover: #fb7185;
  --accent-subtle: rgba(244, 63, 94, 0.1);
  --border: #27272a;
  --border-hover: #3f3f46;
  --radius: 12px;
  --radius-lg: 16px;
}

body {
  font-family:
    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 1.5rem;
}

header {
  text-align: center;
  padding: 2.5rem 0 2rem;
  margin-bottom: 1.5rem;
}

h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

h1 span {
  background: linear-gradient(
    135deg,
    var(--accent) 0%,
    var(--accent-hover) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 400;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.category-select {
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  min-width: 180px;
  transition: border-color 0.15s;
}

.category-select:hover {
  border-color: var(--border-hover);
}

.category-select:focus {
  outline: none;
  border-color: var(--accent);
}

.stumble-btn,
.shuffle-btn {
  padding: 0.625rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s;
}

.stumble-btn:hover,
.shuffle-btn:hover {
  background: var(--accent-hover);
}

.stumble-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.shuffle-btn {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.shuffle-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.content-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  transition: all 0.15s;
}

.content-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.content-card h2 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.content-card h2 a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.15s;
}

.content-card h2 a:hover {
  color: var(--accent);
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.category-tag {
  background: var(--accent-subtle);
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  border: none;
}

.description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
  line-height: 1.5;
}

.visit-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.15s;
}

.visit-link:hover {
  color: var(--accent-hover);
}

.stats {
  text-align: center;
  padding: 0.5rem;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.history {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.history h2 {
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.hidden {
  display: none;
}

.placeholder-text {
  text-align: center;
  color: var(--text-muted);
  padding: 2rem 1rem;
}

.mode-nav {
  display: inline-flex;
  gap: 0.25rem;
  justify-content: center;
  margin-top: 1rem;
  background: var(--bg-secondary);
  padding: 0.25rem;
  border-radius: var(--radius);
}

.mode-nav a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: calc(var(--radius) - 4px);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.15s;
}

.mode-nav a:hover {
  color: var(--text-primary);
}

.mode-nav a.active {
  color: var(--text-primary);
  background: var(--bg-card);
}

.embed-container {
  margin: 0.75rem 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-secondary);
}

.embed-frame {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: none;
}

/* Link preview for non-embeddable content */
.link-preview {
  display: flex;
  gap: 1rem;
  padding: 0.875rem;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  margin: 0.75rem 0;
  border: 1px solid var(--border);
  transition: border-color 0.15s;
}

.link-preview:hover {
  border-color: var(--border-hover);
}

.link-preview-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--bg-card-hover);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

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

.link-preview-domain {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.125rem;
}

.link-preview-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.history-item {
  padding: 0.5rem 0.75rem;
  background: var(--bg-secondary);
  border-radius: 8px;
  font-size: 0.8rem;
}

.history-item a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s;
}

.history-item a:hover {
  color: var(--text-primary);
}

footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 2rem;
}

footer p + p {
  margin-top: 0.25rem;
}

/* Feed/Browse specific */
.feed {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.feed-item {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  border: 1px solid var(--border);
  transition: all 0.15s;
}

.feed-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.feed-item.validating {
  opacity: 0.5;
}

.feed-item.invalid {
  display: none;
}

.loading-indicator {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.load-more-container {
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 600px) {
  .container {
    padding: 1rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  .controls {
    flex-direction: column;
  }

  .stumble-btn,
  .shuffle-btn,
  .category-select {
    width: 100%;
  }

  .mode-nav {
    width: 100%;
  }

  .mode-nav a {
    flex: 1;
    text-align: center;
  }

  .link-preview {
    flex-direction: column;
    gap: 0.5rem;
  }

  .link-preview-icon {
    width: 40px;
    height: 40px;
  }
}