:root {
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --secondary: #1e293b;
    --accent: #8b5cf6;
    --success: #10b981;
    --danger: #ef4444;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-image: radial-gradient(circle at 50% -20%, #1e1b4b, #0f172a);
}

/* Glassmorphism utility */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Login Page */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.login-box {
    width: 100%;
    max-width: 400px;
    padding: 40px 30px;
    text-align: center;
    animation: fadeIn 0.5s ease-out;
}

.login-logo {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 10px;
    background: linear-gradient(to right, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-subtitle {
    color: #94a3b8;
    font-size: 0.9rem;
    margin-bottom: 30px;
}

.input-group {
    margin-bottom: 20px;
    text-align: left;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.85rem;
    color: #cbd5e1;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.btn {
    display: inline-block;
    width: 100%;
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

/* Dashboard Layout */
.dashboard-wrap {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    border-right: 1px solid var(--glass-border);
    padding: 20px 0;
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    padding: 0 20px 20px;
    font-size: 1.5rem;
    font-weight: 800;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 20px;
    background: linear-gradient(to right, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    list-style: none;
}

.nav-links li a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: #cbd5e1;
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}

.nav-links li a:hover, .nav-links li a.active {
    background: rgba(255,255,255,0.05);
    color: white;
    border-right: 3px solid var(--primary);
}

.main-content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.header-top h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.stat-card {
    padding: 20px;
    text-align: left;
}

.stat-card h3 {
    font-size: 0.9rem;
    color: #94a3b8;
    margin-bottom: 10px;
}

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

/* Tables */
.data-table-container {
    overflow-x: auto;
    border-radius: 12px;
}

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

.data-table th, .data-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

.data-table th {
    background: rgba(0,0,0,0.2);
    font-weight: 600;
    color: #94a3b8;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
}

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

.data-table tbody tr:hover {
    background: rgba(255,255,255,0.03);
}

/* Badges */
.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-active { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.badge-expired { background: rgba(239, 68, 68, 0.2); color: var(--danger); }

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.active {
    display: flex;
}

.modal-content {
    width: 100%;
    max-width: 500px;
    padding: 30px;
    position: relative;
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.close-btn {
    background: none;
    border: none;
    color: #94a3b8;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Action buttons */
.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: 6px;
    background: rgba(255,255,255,0.1);
    color: white;
    border: none;
    cursor: pointer;
    margin-right: 5px;
    transition: background 0.2s;
}
.btn-sm:hover { background: rgba(255,255,255,0.2); }
.btn-danger { background: rgba(239, 68, 68, 0.2); color: var(--danger); }
.btn-danger:hover { background: rgba(239, 68, 68, 0.4); }

.flex-between { display: flex; justify-content: space-between; align-items: center; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }