/* ============================================
   LIBRARY MANAGEMENT SYSTEM - MAIN STYLESHEET
   For Sekolah Menengah Tumpat
   ============================================ */

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

/* ============================================
   LOGIN PAGE STYLES
   ============================================ */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 32px;
    color: #667eea;
    margin-bottom: 5px;
}

.login-header p {
    color: #666;
    font-size: 16px;
}

.btn-login {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

/* ============================================
   DASHBOARD LAYOUT
   ============================================ */
.wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: linear-gradient(180deg, #2c3e50 0%, #34495e 100%);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
}

.sidebar-header {
    padding: 20px;
    text-align: center;
    background: rgba(0,0,0,0.2);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h3 {
    font-size: 24px;
    margin-bottom: 5px;
}

.sidebar-header p {
    font-size: 14px;
    opacity: 0.8;
}

.user-info {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(0,0,0,0.2);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.user-info i {
    font-size: 40px;
    opacity: 0.9;
}

.user-info strong {
    display: block;
    font-size: 14px;
}

.user-info small {
    display: block;
    font-size: 12px;
    opacity: 0.7;
    text-transform: uppercase;
}

.nav-links {
    list-style: none;
    padding: 20px 0;
}

.nav-links li {
    margin-bottom: 5px;
}

.nav-links a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: white;
    text-decoration: none;
    transition: all 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
    background: rgba(52, 152, 219, 0.3);
    border-left: 4px solid #3498db;
    padding-left: 16px;
}

.nav-links i {
    width: 20px;
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    background: #f5f5f5;
}

.top-bar {
    background: white;
    padding: 20px 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar h2 {
    color: #2c3e50;
    font-size: 24px;
}

.top-bar-right span {
    color: #666;
    font-size: 14px;
}

.content {
    padding: 30px;
}

footer {
    background: white;
    padding: 20px 30px;
    text-align: center;
    color: #666;
    font-size: 14px;
    margin-top: 40px;
    border-top: 1px solid #e0e0e0;
}

/* ============================================
   FORM STYLES
   ============================================ */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
}

.form-control {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 25px;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(52, 152, 219, 0.3);
}

.btn-success {
    background: #27ae60;
    color: white;
}

.btn-success:hover {
    background: #229954;
}

.btn-danger {
    background: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-warning {
    background: #f39c12;
    color: white;
}

.btn-warning:hover {
    background: #e67e22;
}

.btn-info {
    background: #16a085;
    color: white;
}

.btn-info:hover {
    background: #138d75;
}

.btn-secondary {
    background: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-icon {
    padding: 8px 12px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}

.btn-edit {
    background: #3498db;
    color: white;
}

.btn-edit:hover {
    background: #2980b9;
}

.btn-delete {
    background: #e74c3c;
    color: white;
}

.btn-delete:hover {
    background: #c0392b;
}

/* ============================================
   CARDS & CONTAINERS
   ============================================ */
.card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 25px;
    margin-bottom: 25px;
}

.card h3 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 20px;
}

.dashboard-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 20px;
}

.dashboard-card h3 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 18px;
}

/* Statistics Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: white;
}

.stat-info h3 {
    font-size: 32px;
    color: #2c3e50;
    margin: 0 0 5px 0;
}

.stat-info p {
    color: #666;
    font-size: 14px;
    margin: 0;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

/* ============================================
   TABLES
   ============================================ */
.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

table thead {
    background: #f8f9fa;
}

table th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: #2c3e50;
    border-bottom: 2px solid #dee2e6;
}

table td {
    padding: 12px;
    border-bottom: 1px solid #dee2e6;
}

table tbody tr:hover {
    background: #f8f9fa;
}

table tbody tr:last-child td {
    border-bottom: none;
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success {
    background: #d4edda;
    color: #155724;
}

.badge-danger {
    background: #f8d7da;
    color: #721c24;
}

.badge-warning {
    background: #fff3cd;
    color: #856404;
}

.badge-info {
    background: #d1ecf1;
    color: #0c5460;
}

/* ============================================
   ALERTS
   ============================================ */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left: 4px solid #28a745;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-left: 4px solid #dc3545;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border-left: 4px solid #ffc107;
}

/* ============================================
   ACTION BAR
   ============================================ */
.action-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    gap: 15px;
    flex-wrap: wrap;
}

.search-bar {
    display: flex;
    gap: 10px;
    flex: 1;
}

.search-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

/* ============================================
   BOOKS GRID (FOR MEMBERS)
   ============================================ */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.book-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 20px;
    transition: transform 0.3s;
}

.book-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
}

.book-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: white;
    margin-bottom: 15px;
}

.book-info h4 {
    color: #2c3e50;
    font-size: 18px;
    margin-bottom: 10px;
}

.book-author {
    color: #666;
    font-size: 14px;
    margin-bottom: 15px;
}

.book-details {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 15px;
    padding: 15px 0;
    border-top: 1px solid #e0e0e0;
    border-bottom: 1px solid #e0e0e0;
}

.book-details span {
    color: #666;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.book-details i {
    color: #3498db;
    width: 16px;
}

.book-availability {
    margin-top: 15px;
}

/* ============================================
   MODAL
   ============================================ */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    overflow-y: auto;
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.3);
    animation: slideDown 0.3s;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-content h2 {
    color: #2c3e50;
    margin-bottom: 20px;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 20px;
}

.close:hover {
    color: #000;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

code {
    background: #f4f4f4;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        position: relative;
        height: auto;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-grid,
    .dashboard-grid,
    .books-grid {
        grid-template-columns: 1fr;
    }
    
    .action-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-bar {
        flex-direction: column;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .table-responsive {
        font-size: 12px;
    }
    
    table th,
    table td {
        padding: 8px;
    }
}

@media (max-width: 480px) {
    .content {
        padding: 15px;
    }
    
    .top-bar {
        padding: 15px;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .modal-content {
        width: 95%;
        padding: 20px;
        margin: 10% auto;
    }
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

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