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

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --border: #334155;
  --success: #22c55e;
  --error: #ef4444;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.app {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 240px;
  background: var(--bg-card);
  padding: 20px 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  padding: 0 20px 20px;
  border-bottom: 1px solid var(--border);
  color: var(--primary);
}

.nav-links {
  list-style: none;
  padding: 20px 0;
  flex: 1;
}

.nav-links a {
  display: block;
  padding: 12px 20px;
  color: var(--text-muted);
  text-decoration: none;
  transition: all 0.2s;
}

.nav-links a:hover {
  background: var(--bg-hover);
  color: var(--text);
}

.nav-links a.active {
  background: var(--primary);
  color: white;
}

.nav-footer {
  padding: 20px;
  border-top: 1px solid var(--border);
}

.logout-btn {
  display: block;
  padding: 10px 16px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  text-decoration: none;
  text-align: center;
  border-radius: 6px;
  transition: all 0.2s;
}

.logout-btn:hover {
  background: var(--error);
  border-color: var(--error);
  color: white;
}

/* Main content */
.content {
  flex: 1;
  padding: 30px;
  overflow-x: auto;
}

.page-header {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 30px;
}

.page-header h1 {
  font-size: 1.75rem;
  font-weight: 600;
}

.count {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.stat-card {
  background: var(--bg-card);
  padding: 24px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Tables */
.table-container {
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  background: var(--bg-hover);
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background: rgba(99, 102, 241, 0.1);
}

.url-cell {
  max-width: 400px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: monospace;
  font-size: 0.9rem;
}

.uuid-cell {
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.empty {
  text-align: center;
  color: var(--text-muted);
  padding: 40px !important;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-top: 20px;
}

.page-info {
  color: var(--text-muted);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
}

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

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

.btn-primary:hover {
  background: var(--primary-dark);
}

/* Login page */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-box {
  background: var(--bg-card);
  padding: 40px;
  border-radius: 16px;
  border: 1px solid var(--border);
  width: 100%;
  max-width: 400px;
}

.login-box h1 {
  text-align: center;
  margin-bottom: 30px;
  color: var(--primary);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
}

.login-box .btn {
  width: 100%;
  padding: 14px;
  font-size: 1rem;
}

.error-message {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--error);
  color: var(--error);
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
  text-align: center;
}

/* Error page */
.error-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.error-container h1 {
  font-size: 2rem;
  color: var(--error);
  margin-bottom: 15px;
}

.error-container p {
  color: var(--text-muted);
  margin-bottom: 25px;
}