:root {
    --bg-dark: #0f172a;
    --sidebar-bg: #1e293b;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #6366f1;
    --accent-hover: #4f46e5;
    --border-color: rgba(255,255,255,0.05);
    
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    overflow: hidden; /* Prevent body scroll, handle inside main */
}

/* Login Overlay */
.login-overlay {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: var(--bg-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}
.login-box {
    width: 100%;
    max-width: 400px;
    padding: 40px;
    text-align: center;
}
.login-box h2 {
    margin-bottom: 24px;
    font-size: 24px;
}
.login-input {
    width: 100%;
    padding: 14px 16px;
    margin-bottom: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: rgba(0,0,0,0.2);
    color: white;
    outline: none;
    font-size: 15px;
    transition: border-color 0.3s;
}
.login-input:focus {
    border-color: var(--accent-color);
}

/* Glassmorphism utility */
.glass-panel {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.admin-layout {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.sidebar-header {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
}

.logo-icon {
    font-size: 28px;
    color: var(--accent-color);
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.nav-links {
    list-style: none;
    padding: 20px 12px;
    flex: 1;
}

.nav-links li {
    margin-bottom: 8px;
}

.nav-links a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    text-decoration: none;
    color: var(--text-secondary);
    border-radius: 10px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-links a i {
    font-size: 20px;
}

.nav-links a:hover, .nav-links li.active a {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-color);
}

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

.logout-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--danger);
    text-decoration: none;
    padding: 10px;
    border-radius: 8px;
    transition: background 0.2s;
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

/* Header */
.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 10;
}

.search-box {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.05);
    padding: 10px 16px;
    border-radius: 20px;
    width: 300px;
    border: 1px solid var(--border-color);
    transition: border-color 0.3s;
}

.search-box:focus-within {
    border-color: var(--accent-color);
}

.search-box i {
    color: var(--text-secondary);
    margin-right: 8px;
}

.search-box input {
    background: transparent;
    border: none;
    color: white;
    outline: none;
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 24px;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    position: relative;
    transition: color 0.2s;
}

.icon-btn:hover {
    color: white;
}

.badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--danger);
    color: white;
    font-size: 10px;
    font-weight: bold;
    padding: 2px 6px;
    border-radius: 10px;
}

.admin-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--accent-color);
}

.admin-name {
    font-weight: 600;
    font-size: 14px;
}

/* Dashboard Content */
.dashboard-content {
    padding: 30px 40px;
}

.page-title {
    font-size: 24px;
    margin-bottom: 24px;
    font-weight: 700;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.stat-card {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.15);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
}

.stat-details h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.stat-number {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-trend {
    font-size: 12px;
    display: flex;
    align-items: center;
    font-weight: 500;
}

.stat-trend.positive { color: var(--success); }
.stat-trend.neutral { color: var(--text-secondary); }

/* Table */
.table-container {
    padding: 24px;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.table-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.btn-primary {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.2s;
}

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

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

.data-table th {
    text-align: left;
    padding: 16px;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.02);
    font-size: 14px;
    color: var(--text-primary);
}

.data-table tbody tr {
    transition: background 0.2s;
}

.data-table tbody tr:hover {
    background: rgba(255,255,255,0.02);
}

/* Badges */
.badge-vip {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.badge-normal {
    background: rgba(148, 163, 184, 0.15);
    color: var(--text-secondary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.action-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 12px;
}

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