:root {
  --bg: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: #1c2128;
  --border: #30363d;
  --text: #c9d1d9;
  --text-secondary: #8b949e;
  --text-heading: #e6edf3;
  --link: #58a6ff;
  --accent: #58a6ff;
  --tag-bg: #1f2937;
  --tag-text: #7dd3fc;
  --success: #3fb950;
  --warning: #d29922;
}

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

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

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

/* Layout */
.container { max-width: 960px; margin: 0 auto; padding: 0 24px; }
.wide { max-width: 1200px; }

/* Navigation */
nav {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
  position: sticky;
  top: 0;
  z-index: 10;
}

nav .container {
  display: flex;
  align-items: center;
  gap: 24px;
}

nav .logo {
  font-weight: 700;
  font-size: 18px;
  color: var(--text-heading);
  letter-spacing: -0.5px;
}

nav .links { display: flex; gap: 16px; }
nav .links a { color: var(--text-secondary); font-size: 14px; }
nav .links a:hover { color: var(--text); text-decoration: none; }
nav .links a.active { color: var(--text-heading); }

/* Hero */
.hero {
  padding: 80px 0 60px;
  text-align: center;
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  color: var(--text-heading);
  letter-spacing: -2px;
  margin-bottom: 16px;
}

.hero p {
  font-size: 20px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero .cta {
  display: inline-block;
  padding: 10px 24px;
  background: var(--accent);
  color: var(--bg);
  border-radius: 6px;
  font-weight: 600;
  font-size: 14px;
}

.hero .cta:hover { opacity: 0.9; text-decoration: none; }

/* Section */
section {
  padding: 48px 0;
  border-top: 1px solid var(--border);
}

section h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 24px;
}

section p.subtitle {
  color: var(--text-secondary);
  margin-top: -16px;
  margin-bottom: 24px;
}

/* Card Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  transition: border-color 0.15s;
}

.card:hover { border-color: var(--accent); }

.card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 4px;
}

.card .owner {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.card .description {
  font-size: 14px;
  color: var(--text);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card .stats {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

/* Tags */
.tags { display: flex; flex-wrap: wrap; gap: 6px; }

.tag {
  display: inline-block;
  padding: 2px 8px;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 12px;
  font-size: 12px;
}

/* Profile page */
.profile-header {
  padding: 48px 0 24px;
}

.profile-header h1 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 4px;
}

.profile-header .owner {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.profile-section {
  padding: 24px 0;
  border-top: 1px solid var(--border);
}

.profile-section h2 {
  font-size: 18px;
  margin-bottom: 16px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.stat-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
  text-align: center;
}

.stat-box .number {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-heading);
}

.stat-box .label {
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Request button */
.btn {
  display: inline-block;
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
}

.btn:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }

.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

.btn-primary:hover { opacity: 0.9; color: var(--bg); }

/* Search */
.search-bar {
  width: 100%;
  padding: 10px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 14px;
  margin-bottom: 24px;
  outline: none;
}

.search-bar:focus { border-color: var(--accent); }
.search-bar::placeholder { color: var(--text-secondary); }

/* Empty state */
.empty {
  text-align: center;
  padding: 48px 0;
  color: var(--text-secondary);
}

/* Neighborhoods */
.neighborhood {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
}

.neighborhood .shared {
  font-size: 12px;
  color: var(--text-secondary);
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
}

/* Responsive */
@media (max-width: 640px) {
  .hero h1 { font-size: 32px; }
  .hero p { font-size: 16px; }
  .card-grid { grid-template-columns: 1fr; }
  nav .links { gap: 12px; }
}