/**
 * Custom Stylesheet
 * Babcock University Library Management System
 */

/* General Styles */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.main-content {
    flex: 1;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 400px;
}

/* Feature Cards */
.feature-icon {
    margin: 0 auto;
}

.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

/* Statistics */
.stat-card {
    padding: 20px;
}

/* Footer */
.footer {
    margin-top: auto;
}

.footer a {
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #fff !important;
}

/* Navigation */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.25rem;
}

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

/* Tables */
.table {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.table thead {
    background-color: var(--primary-color);
    color: white;
}

/* Badges */
.badge {
    font-size: 0.875rem;
    padding: 0.35em 0.65em;
}

/* Dashboard Cards */
.dashboard-card {
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
}

.dashboard-card:hover {
    border-left-width: 6px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

/* Loading Spinner */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.spinner-overlay.active {
    display: flex;
}

/* Alert Messages */
.alert {
    border-radius: 0.5rem;
    border-left: 4px solid;
}

.alert-success {
    border-left-color: var(--success-color);
}

.alert-danger {
    border-left-color: var(--danger-color);
}

.alert-warning {
    border-left-color: var(--warning-color);
}

.alert-info {
    border-left-color: var(--info-color);
}

/* Book Cards */
.book-card {
    height: 100%;
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.book-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

.book-card .card-img-top {
    height: 200px;
    object-fit: cover;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

/* Status Badges */
.status-available {
    background-color: var(--success-color);
}

.status-unavailable {
    background-color: var(--danger-color);
}

.status-overdue {
    background-color: var(--warning-color);
    color: #000;
}

/* Responsive Utilities */
@media (max-width: 768px) {
    .hero-section {
        min-height: 300px;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .stat-card h3 {
        font-size: 2rem;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .footer,
    .btn,
    .alert {
        display: none !important;
    }
    
    .main-content {
        margin: 0;
        padding: 0;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}