/* Custom CSS for Sindh University Marketplace */

:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --border-radius: 8px;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --box-shadow-lg: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

/* Global Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #f5f5f5;
}

/* Navigation Enhancements */
.navbar-brand {
    font-weight: 600;
    font-size: 1.4rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #4dabf7 100%);
    color: white;
    padding: 4rem 0;
    margin-bottom: 2rem;
}

.hero-section h1 {
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.hero-section .lead {
    font-size: 1.2rem;
    font-weight: 300;
}

.hero-image svg {
    max-width: 100%;
    height: auto;
}

/* Card Enhancements */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.card-header {
    background-color: var(--light-color);
    border-bottom: 1px solid #dee2e6;
    font-weight: 600;
}

/* Post Cards */
.post-card {
    height: 100%;
    transition: all 0.3s ease;
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0.75rem 1.5rem rgba(0, 0, 0, 0.12);
}

.post-card .card-img-top {
    transition: transform 0.3s ease;
}

.post-card:hover .card-img-top {
    transform: scale(1.05);
}

/* Announcement Cards */
.announcement-card {
    transition: all 0.3s ease;
}

.announcement-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.announcement-content {
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Form Enhancements */
.form-control, .form-select {
    border-radius: var(--border-radius);
    border: 1px solid #ced4da;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

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

.form-label {
    font-weight: 500;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

/* Button Enhancements */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.2s ease;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary-color), #4dabf7);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(45deg, #0b5ed7, #339af0);
    transform: translateY(-1px);
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1.1rem;
}

/* Badge Enhancements */
.badge {
    font-weight: 500;
    padding: 0.5em 0.75em;
    border-radius: 0.375rem;
}

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

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

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

/* Alert Enhancements */
.alert {
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem 1.25rem;
}

.alert-success {
    background-color: #d1e7dd;
    color: #0a3622;
}

.alert-danger {
    background-color: #f8d7da;
    color: #58151c;
}

.alert-warning {
    background-color: #fff3cd;
    color: #664d03;
}

.alert-info {
    background-color: #cff4fc;
    color: #055160;
}

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

.modal-header {
    background-color: var(--light-color);
    border-bottom: 1px solid #dee2e6;
}

/* Messages Container */
.messages-container {
    max-height: 600px;
    overflow-y: auto;
}

.message-item {
    padding: 1rem;
    border-radius: var(--border-radius);
    transition: background-color 0.2s ease;
}

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

/* Currency Formatting */
.price-section h3 {
    font-weight: 700;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

/* Responsive Images */
.img-fluid {
    border-radius: var(--border-radius);
}

/* Loading States */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Progress Bars */
.progress {
    height: 8px;
    border-radius: 4px;
    background-color: #e9ecef;
}

.progress-bar {
    border-radius: 4px;
}

/* Custom Utilities */
.text-shadow {
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

.border-start-primary {
    border-left: 4px solid var(--primary-color) !important;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #4dabf7 100%);
}

/* Scrollbar Styling */
.messages-container::-webkit-scrollbar {
    width: 6px;
}

.messages-container::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.messages-container::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
}

.messages-container::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

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

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

.slide-up {
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Status Indicators */
.status-pending {
    color: var(--warning-color);
}

.status-approved {
    color: var(--success-color);
}

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

/* Footer Enhancements */
footer {
    background-color: var(--dark-color);
    color: #fff;
}

footer a {
    color: #adb5bd;
    text-decoration: none;
    transition: color 0.2s ease;
}

footer a:hover {
    color: #fff;
}

/* Print Styles */
@media print {
    .navbar, .btn, .alert, .modal, footer {
        display: none !important;
    }
    
    .card {
        border: 1px solid #000 !important;
        box-shadow: none !important;
    }
    
    body {
        background: white !important;
    }
}

/* Mobile Responsive Enhancements */
@media (max-width: 768px) {
    .hero-section {
        padding: 2rem 0;
        text-align: center;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .btn-group .btn {
        margin-bottom: 0.5rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
}

/* Dark Mode Support (Optional) */
@media (prefers-color-scheme: dark) {
    /* Add dark mode styles if needed */
}

/* Accessibility Enhancements */
.btn:focus,
.form-control:focus,
.form-select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

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

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