:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --bg-dark: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.9);
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: rgba(0, 0, 0, 0.1);
  --success: #10b981;
  --warning: #f59e0b;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', system-ui, sans-serif;
}

body {
  background: var(--bg-dark);
  background-image: radial-gradient(circle at 15% 50%, rgba(79, 70, 229, 0.05), transparent 25%),
                    radial-gradient(circle at 85% 30%, rgba(16, 185, 129, 0.05), transparent 25%);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
}

/* Sidebar */
.sidebar {
  width: 280px;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(12px);
  border-right: 1px solid var(--border-color);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.brand {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #818cf8, #c084fc);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.nav-link {
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: all 0.3s ease;
}

.nav-link:hover, .nav-link.active {
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary);
}

/* Main Content */
.main-content {
  flex: 1;
  padding: 2rem 3rem;
  overflow-y: auto;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.header h1 {
  font-size: 1.8rem;
  font-weight: 600;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Glass Cards */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 1.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card h3 {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.stat-card .value {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.stat-card .trend {
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.trend.up { color: var(--success); }
.trend.down { color: var(--warning); }

/* Tables */
.table-container {
  overflow-x: auto;
}

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

th, td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

th {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

tr:hover td {
  background: rgba(0, 0, 0, 0.02);
}

/* Form Controls */
input, select {
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border-color) !important;
  background: rgba(255, 255, 255, 0.8) !important;
  color: var(--text-main) !important;
  outline: none;
}
input:focus, select:focus {
  border-color: var(--primary) !important;
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.2);
}

/* Badges */
.badge {
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}
.badge-success { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.badge-warning { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.badge-primary { background: rgba(79, 70, 229, 0.1); color: #818cf8; }

/* Buttons */
.btn {
  padding: 0.6rem 1.25rem;
  border-radius: 0.5rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
}

/* Sync animation */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.spinning {
  animation: spin 1s linear infinite;
}