/* Exam System Styles */

/* Exam Container */
.exam-container {
    min-height: 100vh;
    background-color: var(--light-50);
}

.exam-section {
    display: none;
    min-height: 100vh;
}

.exam-section.active {
    display: block;
}

/* Registration Section */
.exam-info {
    text-align: center;
}

.exam-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    color: var(--gray-600);
}

.detail-item i {
    font-size: 20px;
    width: 24px;
}

/* Exam Header */
.exam-header {
    background: white;
    border-bottom: 1px solid var(--gray-100);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.exam-controls {
    display: flex;
    align-items: center;
    gap: 24px;
    justify-content: flex-end;
}

.timer-container {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--warning-50);
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--warning-200);
}

.timer {
    font-size: 18px;
    font-weight: 600;
    color: var(--warning-700);
}

.progress-container {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 200px;
}

.progress {
    flex: 1;
    height: 8px;
    background: var(--gray-100);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
    min-width: 50px;
}

/* Exam Body */
.exam-body {
    padding: 32px 0;
}

.question-container {
    background: white;
    border-radius: 12px;
    padding: 32px;
    box-shadow: 0 2px 2px rgba(0,0,0,0.1);
    margin-bottom: 24px;
}

.question-display {
    margin-bottom: 32px;
}

.question {
    margin-bottom: 24px;
}

.question-number {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 8px;
}

.question-text {
    font-size: 18px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 24px;
    line-height: 1.6;
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-item {
    display: flex;
    align-items: center;
    padding: 16px;
    border: 1px solid var(--gray-100);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: white;
}

.option-item:hover {
    border-color: var(--main-400);
    background: var(--main-50);
}

.option-item.selected {
    border-color: var(--main-600);
    background: var(--main-50);
}

.option-item input[type="radio"] {
    margin-right: 12px;
}

.option-label {
    font-size: 16px;
    color: var(--gray-700);
    cursor: pointer;
    flex: 1;
}

.question-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--gray-100);
}

/* Question Palette */
.question-palette {
    background: white;
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 1px 8px rgba(0,0,0,0.1);
    position: sticky;
    top: 100px;
}

.question-grid {
    display: grid;
    grid-template-columns: repeat(5, .5fr);
    gap: 8px;
    margin-bottom: 16px;
}

.question-number-btn {
    width: 50px;
    height: 50px;
    border: .6px solid var(--gray-100);
    border-radius: 2px;
    background: white;
    color: var(--gray-600);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.question-number-btn:hover {
    border-color: var(--main-400);
    color: var(--main-600);
}

.question-number-btn.current {
    border-color: var(--main-600);
    background: var(--main-600);
    color: white;
}

.question-number-btn.answered {
    border-color: var(--success-500);
    background: var(--success-500);
    color: white;
}

.question-number-btn.unanswered {
    border-color: var(--gray-300);
    background: var(--gray-50);
    color: var(--gray-500);
}

.palette-legend {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--gray-600);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 10px;
    border: 1px solid var(--gray-300);
}

.legend-color.answered {
    background: var(--success-500);
    border-color: var(--success-500);
}

.legend-color.current {
    background: var(--main-600);
    border-color: var(--main-600);
}

.legend-color.unanswered {
    background: var(--gray-50);
    border-color: var(--gray-300);
}

/* Results Section */
.results-card {
    background: white;
    border-radius: 12px;
    padding: 48px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    text-align: center;
}

.results-logo {
    height: 60px;
    width: auto;
}

.results-summary {
    margin: 32px 0;
}

.result-item {
    background: var(--light-50);
    padding: 24px;
    border-radius: 8px;
    text-align: center;
    height: 100%;
}

.result-label {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--main-600);
}

.results-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* Responsive Design */
@media (max-width: 991px) {
    .exam-controls {
        flex-direction: column;
        gap: 16px;
        align-items: stretch;
    }
    
    .progress-container {
        min-width: auto;
    }
    
    .question-palette {
        position: static;
        margin-top: 24px;
    }
    
    .question-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 767px) {
    .exam-header {
        padding: 12px 0;
    }
    
    .exam-body {
        padding: 16px 0;
    }
    
    .question-container {
        padding: 20px;
    }
    
    .question-navigation {
        flex-direction: column;
        gap: 12px;
    }
    
    .question-navigation button {
        width: 100%;
    }
    
    .question-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .results-card {
        padding: 24px;
    }
    
    .results-actions {
        flex-direction: column;
    }
    
    .results-actions button {
        width: 100%;
    }
}

@media (max-width: 575px) {
    .question-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .question-number-btn {
        width: 36px;
        height: 36px;
        font-size: 12px;
    }
}

/* Timer Warning States */
.timer.warning {
    color: var(--warning-600);
    animation: pulse 1s infinite;
}

.timer.danger {
    color: var(--danger-600);
    animation: pulse 0.5s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}

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

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--main-600);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Success/Error Messages */
.message {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 14px;
}

.message.success {
    background: var(--success-50);
    color: var(--success-700);
    border: 1px solid var(--success-200);
}

.message.error {
    background: var(--danger-50);
    color: var(--danger-700);
    border: 1px solid var(--danger-200);
}

.message.warning {
    background: var(--warning-50);
    color: var(--warning-700);
    border: 1px solid var(--warning-200);
}

/* Admin Panel Styles */
.admin-header {
    border-bottom: 1px solid var(--gray-100);
    padding-bottom: 24px;
}

.admin-controls {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.stats-cards {
    margin-bottom: 32px;
}

.stat-card {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 16px;
    height: 100%;
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-content h3 {
    font-size: 28px;
    font-weight: 700;
    margin: 0;
    color: var(--gray-700);
}

.stat-content p {
    margin: 0;
    color: var(--gray-600);
    font-size: 14px;
}

.results-table-container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    overflow: hidden;
}

.results-table-container .card {
    border: none;
    box-shadow: none;
}

.results-table-container .card-header {
    background: var(--light-50);
    border-bottom: 1px solid var(--gray-100);
    padding: 20px 24px;
}

.results-table-container .card-body {
    padding: 0;
}

.table th {
    background: var(--light-50);
    border-bottom: 1px solid var(--gray-100);
    font-weight: 600;
    color: var(--gray-700);
    padding: 16px 24px;
}

.table td {
    padding: 16px 24px;
    vertical-align: middle;
    border-bottom: 1px solid var(--gray-100);
}

.table tbody tr:hover {
    background: var(--light-50);
}

.badge {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
}

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

/* Responsive Admin */
@media (max-width: 767px) {
    .admin-controls .row {
        gap: 16px;
    }
    
    .admin-controls .col-md-6 {
        width: 100%;
    }
    
    .stats-cards .col-md-3 {
        margin-bottom: 16px;
    }
    
    .stat-card {
        padding: 16px;
    }
    
    .stat-icon {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
    
    .stat-content h3 {
        font-size: 24px;
    }
    
    .table-responsive {
        font-size: 14px;
    }
    
    .table th,
    .table td {
        padding: 12px 16px;
    }
}