/* ============================================================
   開示請求 理解度診断 - クイズ専用CSS
   ============================================================ */

/* --- Quiz Hero --- */
.quiz-hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.quiz-hero-title {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
    color: var(--color-white);
}

.quiz-hero-desc {
    font-size: 0.95rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.7;
}

.quiz-hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

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

.quiz-stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.2;
}

.quiz-stat-label {
    font-size: 0.8rem;
    opacity: 0.8;
}

/* --- Difficulty Select --- */
.quiz-difficulty-section {
    padding: var(--spacing-2xl) 0;
}

.difficulty-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: var(--spacing-xl) auto 0;
}

.difficulty-card {
    background: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.difficulty-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.difficulty-card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.difficulty-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.difficulty-card-count {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.difficulty-badge-beginner {
    color: var(--color-success);
}

.difficulty-badge-intermediate {
    color: var(--color-primary);
}

.difficulty-badge-advanced {
    color: var(--color-accent);
}

.difficulty-badge-random {
    color: #8b5cf6;
}

.difficulty-card-desc {
    font-size: 0.8rem;
    color: var(--color-text-light);
    line-height: 1.5;
}

.difficulty-card-all {
    grid-column: 1 / -1;
    background: var(--color-bg);
    border: 2px dashed var(--color-border);
}

.difficulty-card-all:hover {
    border-color: var(--color-primary);
    border-style: solid;
}

/* --- Quiz Play Area --- */
.quiz-play-section {
    display: none;
    padding: var(--spacing-xl) 0 var(--spacing-3xl);
}

.quiz-play-section.active {
    display: block;
}

/* Progress */
.quiz-progress {
    margin-bottom: var(--spacing-xl);
}

.quiz-progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.quiz-progress-text {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
}

.quiz-progress-difficulty {
    font-size: 0.8rem;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-weight: 600;
}

.quiz-progress-difficulty.beginner {
    background: #e6f7f5;
    color: var(--color-success);
}

.quiz-progress-difficulty.intermediate {
    background: #e8edf4;
    color: var(--color-primary);
}

.quiz-progress-difficulty.advanced {
    background: #fde8ea;
    color: var(--color-accent);
}

.quiz-progress-difficulty.random {
    background: #ede9fe;
    color: #8b5cf6;
}

.quiz-progress-bar {
    height: 6px;
    background: var(--color-bg-dark);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.quiz-progress-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: width 0.5s ease;
}

/* Question Card */
.quiz-question-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-2xl);
    max-width: 800px;
    margin: 0 auto;
}

.quiz-question-number {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.quiz-question-number .q-num {
    background: var(--color-primary);
    color: var(--color-white);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

.quiz-question-text {
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text);
}

/* Answer Options */
.quiz-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.quiz-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.25s ease;
    background: var(--color-white);
}

.quiz-option:hover {
    border-color: var(--color-primary-light);
    background: #f0f4f8;
}

.quiz-option.disabled {
    pointer-events: none;
}

.quiz-option.correct {
    border-color: var(--color-success);
    background: #e6f7f5;
}

.quiz-option.incorrect {
    border-color: var(--color-accent);
    background: #fde8ea;
}

.quiz-option.correct-highlight {
    border-color: var(--color-success);
    background: #e6f7f5;
}

.quiz-option-marker {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--color-text-light);
    flex-shrink: 0;
    transition: all 0.25s ease;
}

.quiz-option.correct .quiz-option-marker {
    background: var(--color-success);
    color: var(--color-white);
}

.quiz-option.incorrect .quiz-option-marker {
    background: var(--color-accent);
    color: var(--color-white);
}

.quiz-option-text {
    font-size: 0.95rem;
    line-height: 1.6;
    flex: 1;
}

/* Rationale */
.quiz-rationale {
    display: none;
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    animation: fadeInUp 0.4s ease;
}

.quiz-rationale.show {
    display: block;
}

.quiz-rationale-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.quiz-rationale-text {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--color-text);
}

.quiz-result-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-white);
    margin-right: var(--spacing-xs);
}

.quiz-result-icon.correct {
    background: var(--color-success);
}

.quiz-result-icon.incorrect {
    background: var(--color-accent);
}

/* Next Button */
.quiz-next-area {
    display: none;
    margin-top: var(--spacing-xl);
    text-align: center;
}

.quiz-next-area.show {
    display: block;
    animation: fadeInUp 0.3s ease;
}

/* --- Results Section --- */
.quiz-results-section {
    display: none;
    padding: var(--spacing-2xl) 0 var(--spacing-3xl);
}

.quiz-results-section.active {
    display: block;
}

.quiz-results-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-2xl);
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.quiz-results-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.quiz-results-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.quiz-results-score {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.quiz-results-score .quiz-results-total {
    font-size: 1.5rem;
    color: var(--color-text-light);
    font-weight: 600;
}

.quiz-results-percent {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
}

.quiz-results-message {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: var(--spacing-xl);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* Score Ring */
.quiz-score-ring {
    width: 160px;
    height: 160px;
    margin: 0 auto var(--spacing-xl);
    position: relative;
}

.quiz-score-ring svg {
    transform: rotate(-90deg);
}

.quiz-score-ring-bg {
    fill: none;
    stroke: var(--color-bg-dark);
    stroke-width: 8;
}

.quiz-score-ring-fill {
    fill: none;
    stroke: var(--color-primary);
    stroke-width: 8;
    stroke-linecap: round;
    transition: stroke-dashoffset 1.5s ease;
}

.quiz-score-ring-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-primary);
}

.quiz-score-ring-text small {
    font-size: 0.9rem;
    color: var(--color-text-light);
    font-weight: 600;
}

/* Results Breakdown */
.quiz-results-breakdown {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.quiz-breakdown-item {
    text-align: center;
}

.quiz-breakdown-num {
    font-size: 1.5rem;
    font-weight: 800;
    display: block;
}

.quiz-breakdown-num.correct {
    color: var(--color-success);
}

.quiz-breakdown-num.incorrect {
    color: var(--color-accent);
}

.quiz-breakdown-label {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

/* Share Area */
.quiz-share-area {
    margin-bottom: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.quiz-share-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.quiz-share-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.btn-share {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    border: 1px solid var(--color-border);
    background: var(--color-white);
    color: var(--color-text);
}

.btn-share:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn-share-x {
    background: #000;
    color: #fff;
    border-color: #000;
}

.btn-share-x:hover {
    background: #333;
}

/* Results Actions */
.quiz-results-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Review List */
.quiz-review-section {
    display: none;
    max-width: 800px;
    margin: var(--spacing-xl) auto 0;
}

.quiz-review-section.show {
    display: block;
}

.quiz-review-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.quiz-review-item {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--color-border);
}

.quiz-review-item.was-correct {
    border-left: 4px solid var(--color-success);
}

.quiz-review-item.was-incorrect {
    border-left: 4px solid var(--color-accent);
}

.quiz-review-q {
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.quiz-review-badge {
    font-size: 0.7rem;
    padding: 1px 8px;
    border-radius: var(--radius-full);
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
}

.quiz-review-badge.correct {
    background: #e6f7f5;
    color: var(--color-success);
}

.quiz-review-badge.incorrect {
    background: #fde8ea;
    color: var(--color-accent);
}

.quiz-review-answer {
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* --- CTA at bottom --- */
.quiz-cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.quiz-cta-section h2 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
}

.quiz-cta-section p {
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
    font-size: 0.9rem;
}

/* --- Animations --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.quiz-fadein {
    animation: fadeInUp 0.4s ease;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .quiz-hero {
        padding: var(--spacing-2xl) 0;
    }

    .quiz-hero-title {
        font-size: 1.4rem;
    }

    .difficulty-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .difficulty-card-all {
        grid-column: 1 / -1;
    }

    .quiz-question-card {
        padding: var(--spacing-lg);
        border-radius: var(--radius-lg);
    }

    .quiz-question-text {
        font-size: 1rem;
    }

    .quiz-option {
        padding: var(--spacing-md);
    }

    .quiz-option-text {
        font-size: 0.9rem;
    }

    .quiz-results-card {
        padding: var(--spacing-xl);
    }

    .quiz-results-score {
        font-size: 2.5rem;
    }

    .quiz-results-actions {
        flex-direction: column;
        align-items: center;
    }

    .quiz-results-actions .btn {
        width: 100%;
        max-width: 300px;
    }
}