/* Rhythm ID Quiz Styles */

.quiz-page {
    max-width: 720px;
    margin: 0 auto;
    padding: 2rem 1rem 4rem;
}

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

.quiz-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

.quiz-header .lead {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
}

/* Loading / empty states */
.quiz-state-message {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--color-text-secondary);
}

.quiz-state-message i {
    font-size: 2.5rem;
    color: var(--color-text-muted);
    margin-bottom: 0.75rem;
    display: block;
}

.quiz-state-message .spinner {
    width: 32px;
    height: 32px;
    margin: 0 auto 1rem;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: quiz-spin 0.8s linear infinite;
}

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

/* Card shell (shared by quiz body + summary) */
.quiz-card {
    background: var(--card-bg);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    box-shadow: var(--card-shadow);
    padding: 1.75rem;
}

.quiz-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.quiz-score {
    color: var(--color-primary);
}

/* ECG chart - dark "monitor strip" background to match the rest of the app's ECG styling */
.quiz-chart-wrapper {
    background: #1a1a1a;
    border-radius: 10px;
    padding: 0.75rem;
    margin-bottom: 1.5rem;
    height: 220px;
}

.quiz-question-prompt {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
    text-align: center;
}

/* Choice buttons */
.quiz-choices {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.quiz-choice-btn {
    padding: 0.85rem 1rem;
    border-radius: 10px;
    border: 1.5px solid var(--color-border);
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
    text-align: left;
}

.quiz-choice-btn:hover:not(:disabled) {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.quiz-choice-btn:active:not(:disabled) {
    transform: scale(0.98);
}

.quiz-choice-btn:disabled {
    cursor: default;
}

.quiz-choice-btn.correct {
    border-color: #2e7d32;
    background: rgba(46, 125, 50, 0.15);
    color: #2e7d32;
    font-weight: 700;
}

.quiz-choice-btn.incorrect {
    border-color: #c62828;
    background: rgba(198, 40, 40, 0.12);
    color: #c62828;
}

/* Feedback panel */
.quiz-feedback {
    border-top: 1px solid var(--color-border-light);
    padding-top: 1.25rem;
    margin-bottom: 1rem;
}

.quiz-feedback-verdict {
    font-weight: 700;
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.quiz-feedback-verdict.correct {
    color: #2e7d32;
}

.quiz-feedback-verdict.incorrect {
    color: #c62828;
}

.quiz-feedback-explanation {
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.quiz-solution-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 600;
    text-decoration: none;
}

.quiz-actions {
    display: flex;
    justify-content: flex-end;
}

.quiz-next-btn {
    background: var(--color-gradient);
    color: white;
    border: none;
    border-radius: 10px;
    padding: 0.7rem 1.5rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: opacity 0.15s ease;
}

.quiz-next-btn:hover {
    opacity: 0.9;
}

/* Summary screen */
.quiz-summary {
    text-align: center;
}

.quiz-summary i {
    font-size: 3rem;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    display: block;
}

.quiz-summary h2 {
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

.quiz-summary-score {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}