/**
 * Main CSS
 * Library Management System
 * 
 * General styling for the entire application
 */

/* Root variables */
:root {
    --primary-color: #21AAE5;
    --primary-dark: #21AAE5;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --border-radius: 0.375rem;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --box-shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    --transition: all 0.15s ease-in-out;
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Global styles */
body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #f8f9fa;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.text-primary {
    color: var(--primary-color) !important;
}

.text-secondary {
    color: var(--secondary-color) !important;
}

.text-success {
    color: var(--success-color) !important;
}

.text-danger {
    color: var(--danger-color) !important;
}

.text-warning {
    color: var(--warning-color) !important;
}

.text-info {
    color: var(--info-color) !important;
}

/* Cards */
.card {
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--box-shadow-lg);
}

.card-header {
    background-color: var(--light-color);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-weight: 500;
}

/* Buttons */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
}

/* Forms */
.form-control {
    border: 1px solid #ced4da;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

/* Navigation */
.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: var(--transition);
}

.navbar-nav .nav-link:hover {
    color: rgba(255, 255, 255, 0.8) !important;
}

/* Dropdown menus */
.dropdown-menu {
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
}

.dropdown-item {
    transition: var(--transition);
}

.dropdown-item:hover {
    background-color: var(--light-color);
}

/* Alerts */
.alert {
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
}

.alert-dismissible .btn-close {
    padding: 0.75rem 1rem;
}

/* Tables */
.table {
    border-radius: var(--border-radius);
    overflow: hidden;
}

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

.table tbody tr:hover {
    background-color: rgba(13, 110, 253, 0.05);
}

/* Badges */
.badge {
    font-weight: 500;
    border-radius: 0.25rem;
}

/* Pagination */
.pagination .page-link {
    border-radius: var(--border-radius);
    margin: 0 0.125rem;
    border: 1px solid #dee2e6;
    color: var(--primary-color);
}

.pagination .page-link:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.pagination .page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Modals */
.modal-content {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
}

.modal-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.modal-footer {
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

/* Utility classes */
.shadow-sm {
    box-shadow: var(--box-shadow) !important;
}

.shadow {
    box-shadow: var(--box-shadow-lg) !important;
}

.shadow-lg {
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175) !important;
}

.border-radius {
    border-radius: var(--border-radius) !important;
}

.border-radius-lg {
    border-radius: calc(var(--border-radius) * 2) !important;
}

/* Responsive utilities */
@media (max-width: 768px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .card {
        margin-bottom: 1rem;
    }

    .btn {
        font-size: 0.9rem;
    }
}

/* Print styles */
@media print {

    .navbar,
    .btn,
    .dropdown,
    .pagination {
        display: none !important;
    }

    .card {
        border: 1px solid #000 !important;
        box-shadow: none !important;
    }

    body {
        background: white !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .card {
        border: 2px solid var(--dark-color);
    }

    .btn {
        border: 2px solid currentColor;
    }

    .form-control {
        border: 2px solid var(--dark-color);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for accessibility */
.btn:focus,
.form-control:focus,
.nav-link:focus,
.dropdown-item:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Animation keyframes */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Animation classes */
.fade-in {
    animation: fadeIn 0.5s ease-out;
}

.slide-in-up {
    animation: slideInUp 0.5s ease-out;
}

.slide-in-down {
    animation: slideInDown 0.5s ease-out;
}

/* Status indicators */
.status-active {
    color: var(--success-color);
}

.status-inactive {
    color: var(--secondary-color);
}

.status-pending {
    color: var(--warning-color);
}

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

/* Book card styles */
.book-card {
    transition: var(--transition);
    height: 100%;
}

.book-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
}

.book-cover {
    aspect-ratio: 3/4;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.book-title {
    font-weight: 600;
    font-size: 1.1rem;
    line-height: 1.3;
    margin-bottom: 0.5rem;
}

.book-author {
    color: var(--secondary-color);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.book-meta {
    font-size: 0.8rem;
    color: var(--secondary-color);
}

/* Search and filter styles */
.search-box {
    position: relative;
}

.search-box .form-control {
    padding-right: 2.5rem;
}

.search-box .search-icon {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary-color);
    pointer-events: none;
}

/* Filter chips */
.filter-chip {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    margin: 0.125rem;
    background-color: var(--light-color);
    border: 1px solid #dee2e6;
    border-radius: 1rem;
    font-size: 0.875rem;
    text-decoration: none;
    color: var(--dark-color);
    transition: var(--transition);
}

.filter-chip:hover {
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
}

.filter-chip.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}