:root {
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --primary-color: #4f46e5;
    --secondary-color: #6366f1;
    --dark-bg: #0f172a;
    --dark-card: #1e293b;
    --text-main: #334155;
    --text-muted: #64748b;
}

body {
    background: #f8fafc;
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    transition: background-color 0.3s ease;
}

body.dark-mode {
    background: var(--dark-bg);
    color: #f1f5f9;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.dark-mode .glass-card {
    background: var(--dark-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Sidebar Styling */
.sidebar {
    height: 100vh;
    width: 260px;
    position: fixed;
    top: 0;
    left: 0;
    padding: 20px;
    background: #ffffff;
    border-right: 1px solid #e2e8f0;
    z-index: 1000;
    transition: all 0.3s;
}

.dark-mode .sidebar {
    background: #1e293b;
    border-right: 1px solid #334155;
}

.sidebar .nav-link {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    color: var(--text-muted);
    border-radius: 10px;
    margin-bottom: 5px;
    transition: all 0.2s;
}

.sidebar .nav-link:hover, .sidebar .nav-link.active {
    background: var(--primary-color);
    color: #fff;
}

.sidebar .nav-link i {
    margin-right: 12px;
    font-size: 1.1rem;
}

/* Content Area */
.main-content {
    margin-left: 260px;
    padding: 30px;
    transition: all 0.3s;
}

@media (max-width: 992px) {
    .sidebar {
        left: -260px;
    }
    .main-content {
        margin-left: 0;
    }
    .sidebar.active {
        left: 0;
    }
}

/* Dashboard Stats Cards */
.stat-card {
    padding: 20px;
    border-radius: 16px;
    transition: transform 0.2s;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 15px;
}

/* Tables */
.table {
    border-radius: 12px;
    overflow: hidden;
}

.table thead th {
    background: #f1f5f9;
    border-bottom: none;
    font-weight: 600;
}

.dark-mode .table thead th {
    background: #334155;
    color: #f1f5f9;
}

/* Buttons */
.btn-primary {
    background: var(--primary-color);
    border: none;
    padding: 10px 20px;
    border-radius: 10px;
}

/* Dark Mode Toggle */
.mode-toggle {
    cursor: pointer;
    font-size: 1.2rem;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}