/* Custom styles for Quiz Application */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    line-height: 1.6;
}

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

/* Cards */
.card {
    border: none;
    border-radius: 15px;
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1) !important;
}

/* Buttons */
.btn {
    border-radius: 10px;
    font-weight: 500;
    transition: all 0.2s ease-in-out;
}

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

.btn-lg {
    padding: 12px 30px;
    font-size: 1.1rem;
}

/* Quiz Options */
.option-item {
    transition: all 0.2s ease-in-out;
    cursor: pointer;
    border: 2px solid #e9ecef !important;
}

.option-item:hover {
    background-color: #f8f9fa;
    border-color: var(--primary-color) !important;
}

.option-item input[type="radio"]:checked ~ label,
.option-item input[type="checkbox"]:checked ~ label {
    color: var(--primary-color);
    font-weight: 600;
}

.option-item input[type="radio"]:checked,
.option-item input[type="checkbox"]:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Progress Bar */
.progress {
    border-radius: 10px;
    background-color: #e9ecef;
}

.progress-bar {
    border-radius: 10px;
    transition: width 0.3s ease-in-out;
}

/* Question Text */
.question-content {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
}

/* Results */
.accordion-button {
    border-radius: 10px !important;
    font-weight: 500;
}

.accordion-button:not(.collapsed) {
    background-color: var(--light-color);
    color: var(--dark-color);
}

.accordion-button:focus {
    box-shadow: none;
    border-color: var(--primary-color);
}

/* Badges */
.badge {
    font-size: 0.8rem;
    padding: 6px 12px;
    border-radius: 20px;
}

/* Alerts */
.alert {
    border: none;
    border-radius: 10px;
    font-weight: 500;
}

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

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

.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

/* Loading Spinner */
.spinner-border {
    width: 3rem;
    height: 3rem;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2rem;
    }
    
    .btn-lg {
        padding: 10px 20px;
        font-size: 1rem;
    }
    
    .card-body {
        padding: 1.5rem !important;
    }
    
    .question-content {
        padding: 15px;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #1a1a1a;
        color: #ffffff;
    }
    
    .card {
        background-color: #2d2d2d;
        color: #ffffff;
    }
    
    .question-content {
        background-color: #3d3d3d;
    }
    
    .option-item {
        background-color: #2d2d2d;
        border-color: #4d4d4d !important;
    }
    
    .option-item:hover {
        background-color: #3d3d3d;
    }
}

/* Print styles */
@media print {
    .navbar,
    .btn,
    footer {
        display: none !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0056b3;
}

/* Focus styles for accessibility */
.btn:focus,
.form-check-input:focus {
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

/* Question Progress Grid */
.question-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    max-height: 400px;
    overflow-y: auto;
}

.question-number {
    aspect-ratio: 1;
    border: 2px solid #dee2e6;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    background-color: #f8f9fa;
    color: #6c757d;
    text-decoration: none;
}

.question-number:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    text-decoration: none;
}

.question-number.current {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
}

.question-number.completed {
    background-color: var(--success-color);
    color: white;
    border-color: var(--success-color);
}

.question-number.completed::after {
    content: '✓';
    position: absolute;
    font-size: 0.7rem;
    margin-top: -2px;
}

.question-number.current.completed {
    background-color: var(--success-color);
    border-color: var(--success-color);
    box-shadow: 0 0 0 3px rgba(25, 135, 84, 0.25);
}

/* Sticky sidebar */
.sticky-top {
    position: sticky;
    z-index: 1020;
}

/* Mobile responsiveness for question grid */
@media (max-width: 768px) {
    .question-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: 6px;
    }
    
    .question-number {
        font-size: 0.8rem;
    }
}

@media (max-width: 576px) {
    .question-grid {
        grid-template-columns: repeat(8, 1fr);
        gap: 4px;
    }
    
    .question-number {
        font-size: 0.75rem;
    }
}

/* Quiz Card Styles */
.quiz-card {
    transition: all 0.3s ease-in-out;
    cursor: pointer;
}

.quiz-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15) !important;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
}

/* Statistics Cards */
.card.bg-primary,
.card.bg-success,
.card.bg-info,
.card.bg-warning {
    transition: transform 0.2s ease-in-out;
}

.card.bg-primary:hover,
.card.bg-success:hover,
.card.bg-info:hover,
.card.bg-warning:hover {
    transform: scale(1.05);
}

/* Quiz Selection Page */
.quiz-info-card {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

/* Enhanced Badge Styles */
.badge.bg-secondary {
    background-color: #6c757d !important;
    font-size: 0.75rem;
    padding: 4px 8px;
}

/* Card Header Enhancements */
.card-header.bg-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%) !important;
    border: none;
}

/* Instruction List Styling */
.list-unstyled li {
    padding: 8px 0;
    border-bottom: 1px solid #f1f1f1;
}

.list-unstyled li:last-child {
    border-bottom: none;
}

/* Loading Animation Enhancement */
.spinner-border {
    animation: spinner-border 0.75s linear infinite;
}

@keyframes spinner-border {
    to {
        transform: rotate(360deg);
    }
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    .quiz-card {
        margin-bottom: 1rem;
    }
    
    .card-header h5,
    .card-header h4 {
        font-size: 1.1rem;
    }
    
    .display-4 {
        font-size: 2.5rem;
    }
}

@media (max-width: 576px) {
    .quiz-card .card-body {
        padding: 1rem;
    }
    
    .btn-lg {
        font-size: 1rem;
        padding: 0.75rem 1.5rem;
    }
}

/* AdSense Styling */
.adsbygoogle {
    border-radius: 8px;
    overflow: hidden;
    margin: 10px 0;
}

/* Ad container styling */
.ad-container {
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 10px;
    margin: 15px 0;
    text-align: center;
}

.ad-container::before {
    content: "Advertisement";
    display: block;
    font-size: 0.75rem;
    color: #6c757d;
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Ensure ads don't break layout */
.adsbygoogle[data-ad-status="unfilled"] {
    display: none !important;
}

/* Mobile ad adjustments */
@media (max-width: 768px) {
    .adsbygoogle {
        margin: 15px 0;
    }
    
    .ad-container {
        margin: 10px 0;
        padding: 8px;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .card {
        border: 2px solid #000;
    }
    
    .btn {
        border: 2px solid;
    }
    
    .option-item {
        border: 2px solid #000 !important;
    }
    
    .question-number {
        border: 2px solid #000;
    }
    
    .quiz-card {
        border: 2px solid #000;
    }
    
    .ad-container {
        border: 2px solid #000;
    }
}