:root {
    --primary-color: #4e73df;
    --secondary-color: #858796;
    --success-color: #1cc88a;
    --info-color: #36b9cc;
    --warning-color: #f6c23e;
    --danger-color: #e74a3b;
    --light-color: #f8f9fc;
    --dark-color: #5a5c69;
    --bg-gradient: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --card-bg: rgba(255, 255, 255, 0.85);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    --glass-border: 1px solid rgba(255, 255, 255, 0.18);
    --radius: 1rem;
}

body {
    background: var(--bg-gradient);
    min-height: 100vh;
    font-family: 'Nunito', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #444;
}

/* Glassmorphism Card */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius);
    border: var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: all 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.25);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-weight: 700;
    color: var(--primary-color);
    padding: 1.25rem;
}

.card-body {
    padding: 1.5rem;
}

/* Navbar */
.navbar-glass {
    background: rgba(255, 255, 255, 0.9) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.navbar-brand {
    font-weight: 800;
    color: var(--primary-color) !important;
    letter-spacing: 1px;
}

.nav-link {
    font-weight: 600;
    color: #555 !important;
    transition: color 0.2s;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color) !important;
}

/* Inputs & Buttons */
.form-control {
    border-radius: 0.5rem;
    border: 1px solid #e3e6f0;
    padding: 0.75rem 1rem;
    transition: all 0.2s;
}

.form-control:focus {
    box-shadow: 0 0 0 0.25rem rgba(78, 115, 223, 0.25);
    border-color: var(--primary-color);
}

.btn {
    border-radius: 0.5rem;
    padding: 0.6rem 1.2rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all 0.3s;
}

.btn-primary {
    background: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 4px 6px rgba(78, 115, 223, 0.3);
}

.btn-primary:hover {
    background: #4060c2;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(78, 115, 223, 0.4);
}

/* Skeleton Loading */
.skeleton {
    background: #eee;
    background: linear-gradient(110deg, #ececec 8%, #f5f5f5 18%, #ececec 33%);
    border-radius: 5px;
    background-size: 200% 100%;
    animation: 1.5s shine linear infinite;
}

@keyframes shine {
    to {
        background-position-x: -200%;
    }
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
    width: 100%;
}

.skeleton-title {
    height: 1.5rem;
    width: 60%;
    margin-bottom: 1rem;
}

.skeleton-btn {
    height: 2.5rem;
    width: 100px;
}

/* Animations */
.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Table */
.table {
    border-collapse: separate;
    border-spacing: 0 0.5rem;
}

.table thead th {
    border: none;
    color: #888;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
}

.table tbody tr {
    background: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.02);
    transition: transform 0.2s;
}

.table tbody tr:hover {
    transform: scale(1.01);
}

.table td {
    border: none;
    vertical-align: middle;
    padding: 1rem;
}

.table td:first-child {
    border-top-left-radius: 0.5rem;
    border-bottom-left-radius: 0.5rem;
}

.table td:last-child {
    border-top-right-radius: 0.5rem;
    border-bottom-right-radius: 0.5rem;
}

/* Dashboard List */
.list-group-item {
    border: none;
    margin-bottom: 5px;
    border-radius: 0.5rem !important;
    transition: all 0.2s;
}

.list-group-item.active {
    background-color: var(--primary-color);
    box-shadow: 0 4px 8px rgba(78, 115, 223, 0.3);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f1f1;
}
::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}