/* Quiz page layout */
.quiz-shell {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.quiz-header {
    position: sticky;
    top: 60px;
    z-index: 90;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border-light);
    padding: 1rem;
}

.quiz-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    max-width: 720px;
    margin: 0 auto;
}

.quiz-progress {
    flex: 1;
}

.quiz-counter {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    font-weight: 600;
    white-space: nowrap;
}

.quiz-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem 1rem;
}

.quiz-body-inner {
    max-width: 720px;
    margin: 0 auto;
}

/* Question card */
.question-card {
    margin-bottom: 2rem;
}

.question-number {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.question-prompt {
    font-size: 1.15rem;
    font-weight: 500;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    color: var(--color-text);
}

.question-image {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    display: block;
}

/* Options */
.options-container {
    margin-bottom: 2rem;
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.option-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
    padding: 0.75rem 1rem;
    text-align: left;
    border: 2px solid var(--color-border);
    background: var(--color-surface);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.95rem;
    transition: all var(--transition);
    min-height: 48px;
    color: var(--color-text);
}

.option-btn:hover:not(:disabled) {
    border-color: var(--color-primary);
    background: var(--color-surface-alt);
}

.option-btn.selected {
    border-color: var(--color-primary);
    background: var(--color-surface-alt);
}

.option-btn.correct {
    border-color: var(--color-correct);
    background: #F0FDF4;
}

.option-btn.wrong {
    border-color: var(--color-wrong);
    background: #FEF2F2;
}

.option-btn:disabled {
    cursor: default;
}

.option-label {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.8rem;
}

.option-btn.selected .option-label,
.option-btn.correct .option-label {
    background: var(--color-correct);
    color: white;
}

.option-btn.wrong .option-label {
    background: var(--color-wrong);
    color: white;
}

.option-text {
    flex: 1;
    word-break: break-word;
}

/* True/False options */
.options-boolean {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.option-btn.boolean {
    justify-content: center;
    padding: 1rem;
    font-weight: 600;
    font-size: 1rem;
}

/* Image options */
.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
}

.option-image-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    border: 2px solid var(--color-border);
    background: var(--color-surface);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
    min-height: 140px;
    justify-content: center;
}

.option-image-card:hover:not(:disabled) {
    border-color: var(--color-primary);
    background: var(--color-surface-alt);
    transform: translateY(-2px);
}

.option-image-card.selected {
    border-color: var(--color-primary);
    background: var(--color-surface-alt);
}

.option-image-card.correct {
    border-color: var(--color-correct);
    background: #F0FDF4;
}

.option-image-card.wrong {
    border-color: var(--color-wrong);
    background: #FEF2F2;
}

.option-image-card:disabled {
    cursor: default;
}

.option-image {
    max-width: 100%;
    max-height: 80px;
    height: auto;
}

.option-image-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

/* Open-ended question */
.open-ended-input {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.open-ended-input input {
    flex: 1;
}

.open-ended-submit {
    flex-shrink: 0;
    padding: 0.75rem;
    border: none;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition);
    min-height: 48px;
    min-width: 48px;
}

.open-ended-submit:hover {
    background: var(--color-primary-dark);
}

.open-ended-submit:disabled {
    opacity: 0.5;
    cursor: default;
}

/* Quiz footer */
.quiz-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-top: 1px solid var(--color-border-light);
    background: var(--color-surface);
    max-width: 100%;
    position: sticky;
    bottom: 0;
}

.quiz-footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
    padding: 0 1rem;
}

.quiz-footer .btn {
    margin: 0;
}

/* Results page */
.results-page {
    padding: 2rem 1rem;
}

.results-header {
    text-align: center;
    margin-bottom: 2rem;
}

.results-title {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.results-test-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.results-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.results-stat {
    text-align: center;
}

.results-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.results-stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.results-review {
    margin-top: 2rem;
    border-top: 1px solid var(--color-border);
    padding-top: 2rem;
}

.results-review-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.results-question {
    padding: 1.25rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    background: var(--color-surface-alt);
}

.results-question-number {
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.results-question-prompt {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.results-answer-row {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.results-answer-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.results-answer-value {
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    background: white;
    border-left: 3px solid;
    font-weight: 500;
}

.results-answer-value.correct {
    border-left-color: var(--color-correct);
    background: #F0FDF4;
    color: #065F46;
}

.results-answer-value.wrong {
    border-left-color: var(--color-wrong);
    background: #FEF2F2;
    color: #991B1B;
}

.results-answer-value.skipped {
    border-left-color: var(--color-text-muted);
    background: #F3F4F6;
    color: var(--color-text-muted);
}

.results-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    justify-content: center;
}

/* Loading state */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    gap: 1rem;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 640px) {
    .quiz-body {
        padding: 1rem 0.75rem;
    }

    .options-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .option-image-card {
        min-height: 120px;
    }

    .option-image {
        max-height: 60px;
    }

    .options-boolean {
        grid-template-columns: 1fr;
    }

    .quiz-footer-inner {
        flex-direction: column;
        padding: 0;
    }

    .quiz-footer .btn {
        width: 100%;
    }

    .results-stats {
        grid-template-columns: 1fr;
    }

    .results-actions {
        flex-direction: column;
    }

    .results-actions .btn {
        width: 100%;
    }
}