:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --info-color: #0dcaf0;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
}

.hero-section {
    background: linear-gradient(135deg, #aab6ee 0%, #12d6f0 100%);
    color: white;
    border-radius: 15px;
}

.hero-section h1 {
    color: white !important;
}

.card {
    border: none;
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.btn {
    border-radius: 25px;
    padding: 10px 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

.form-control {
    border-radius: 10px;
    border: 2px solid #e9ecef;
    padding: 12px 15px;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.progress {
    height: 25px;
    border-radius: 15px;
}

.progress-bar {
    border-radius: 15px;
}

.alert {
    border-radius: 12px;
    border: none;
}

.table-responsive {
    border-radius: 12px;
    overflow: hidden;
}

.table th {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 15px;
}

.table td {
    padding: 15px;
    vertical-align: middle;
    border-top: 1px solid #e9ecef;
}

.badge {
    border-radius: 20px;
    padding: 8px 15px;
    font-size: 0.85rem;
}

/* Status badges */
.status-pending { background-color: var(--warning-color); }
.status-approved { background-color: var(--info-color); }
.status-processing { background-color: var(--primary-color); }
.status-shipped { background-color: var(--success-color); }
.status-delivered { background-color: var(--success-color); }
.status-cancelled { background-color: var(--danger-color); }

.sidebar {
    background: linear-gradient(180deg, var(--primary-color) 0%, #0056b3 100%);
    min-height: 100vh;
    padding: 20px 0;
}

.sidebar .nav-link {
    color: rgba(255,255,255,0.8);
    border-radius: 10px;
    margin: 5px 15px;
    padding: 12px 20px;
    transition: all 0.3s ease;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    background-color: rgba(255,255,255,0.2);
    color: white;
}

.stats-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 15px;
    padding: 25px;
}

.stats-card .stats-number {
    font-size: 2.5rem;
    font-weight: bold;
}

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.required {
    color: var(--danger-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    font-weight: 600;
    margin-bottom: 8px;
}

.input-group {
    border-radius: 10px;
    overflow: hidden;
}

.input-group-text {
    background-color: var(--light-color);
    border: 2px solid #e9ecef;
    border-right: none;
}

@media (max-width: 768px) {
    .hero-section {
        padding: 2rem 1rem;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .stats-card .stats-number {
        font-size: 2rem;
    }
}

/* Animation classes */
.fade-in {
    animation: fadeIn 0.6s ease-in;
}

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

.slide-in {
    animation: slideIn 0.6s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-100px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}