:root {
    --sidebar-width: 250px;
    --primary: #667eea;
    --secondary: #764ba2;
    --dark: #1a1a2e;
    --light: #f8f9fa;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: #f5f5f5;
}

/* Login Page */
.login-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header i {
    font-size: 3rem;
    color: var(--primary);
}

.login-header h2 {
    margin-top: 10px;
    color: #333;
}

.btn-login {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px;
    font-weight: 600;
    border: none;
}

.btn-login:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102,126,234,0.3);
}

/* Admin Layout */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--dark);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header i {
    font-size: 2rem;
    color: #ffd700;
}

.sidebar-menu {
    list-style: none;
    padding: 20px 0;
}

.sidebar-menu li a {
    color: rgba(255,255,255,0.7);
    padding: 12px 20px;
    display: block;
    text-decoration: none;
    transition: all 0.3s;
}

.sidebar-menu li a:hover,
.sidebar-menu li a.active {
    background: rgba(255,255,255,0.1);
    color: white;
    border-left: 3px solid #ffd700;
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
}

.top-bar {
    background: white;
    padding: 15px 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.content-area {
    padding: 30px;
}

/* Dashboard Cards */
.dashboard-card {
    background: white;
    border-radius: 15px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

.dashboard-card:hover {
    transform: translateY(-3px);
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.card-info h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0;
}

.card-info p {
    margin: 0;
    color: #666;
}

/* Tables */
.table {
    margin: 0;
}

.table thead th {
    background: var(--light);
    border-bottom: 2px solid #dee2e6;
    font-weight: 600;
    color: #555;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 0;
        transform: translateX(-100%);
        transition: all 0.3s;
    }
    
    .sidebar.open {
        width: var(--sidebar-width);
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
}