/* ========================================
   QuirkyQuiz - 파스텔 연두색 테마
   ======================================== */

:root {
    --primary: #a8e6cf;
    --primary-dark: #7bc9a6;
    --primary-light: #c5f0dc;
    --secondary: #ffd3b6;
    --accent: #ffaaa5;
    --accent-alt: #d5aaff;
    --bg: #f8fdf9;
    --bg-card: #ffffff;
    --text: #2d3436;
    --text-light: #636e72;
    --text-muted: #b2bec3;
    --success: #00b894;
    --error: #ff6b6b;
    --border: #e8f5e9;
    --shadow: 0 2px 12px rgba(168, 230, 207, 0.15);
    --shadow-hover: 0 8px 24px rgba(168, 230, 207, 0.25);
    --radius: 16px;
    --radius-sm: 8px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    min-height: -webkit-fill-available;
    overflow-x: hidden;
    overscroll-behavior-y: contain;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   Header
   ======================================== */
.header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text);
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-dark);
}

.user-level {
    display: flex;
    align-items: center;
    gap: 8px;
}

.level-badge {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.level-badge.beginner {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.level-badge.intermediate {
    background: var(--secondary);
    color: #e17055;
}

.level-badge.advanced {
    background: var(--accent-alt);
    color: #6c5ce7;
}

.level-stats {
    font-size: 13px;
    color: var(--text-light);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    padding: 48px 0;
    text-align: center;
}

.hero h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

.hero p {
    font-size: 16px;
    color: var(--text-light);
}

/* ========================================
   Categories
   ======================================== */
.categories {
    padding: 24px 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
}

.category-tabs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
}

.category-tab {
    padding: 10px 20px;
    border: none;
    background: var(--bg);
    border-radius: 24px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.category-tab:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.category-tab.active {
    background: var(--primary);
    color: var(--text);
}

/* ========================================
   Quiz Grid
   ======================================== */
.quiz-grid {
    padding: 32px 0;
}

.quizzes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.quiz-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.quiz-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.quiz-card-header {
    padding: 24px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    min-height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.quiz-card-header.has-image {
    padding: 0;
}

.quiz-card-header.history { background: linear-gradient(135deg, #ffe8d6 0%, #ffd3b6 100%); }
.quiz-card-header.geography { background: linear-gradient(135deg, #e8f5e9 0%, #dcedc1 100%); }
.quiz-card-header.culture { background: linear-gradient(135deg, #ffe5e5 0%, #ffaaa5 100%); }
.quiz-card-header.sports { background: linear-gradient(135deg, #ede7f6 0%, #d5aaff 100%); }

.quiz-card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.quiz-card:hover .quiz-card-image {
    transform: scale(1.05);
}

.quiz-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
}

.quiz-card-header.has-image .quiz-card-overlay {
    display: flex;
    align-items: flex-end;
    min-height: 60px;
}

.quiz-card-header:not(.has-image) .quiz-card-overlay {
    position: static;
    background: none;
    padding: 0;
}

.quiz-card-icon {
    font-size: 48px;
    margin-bottom: 12px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.quiz-card-question {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.4;
}

.quiz-card-header.has-image .quiz-card-question {
    color: #fff;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

.quiz-card-body {
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.quiz-card-category {
    font-size: 13px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 4px;
}

.quiz-card-level {
    display: flex;
    gap: 4px;
}

.level-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border);
}

.level-dot.active {
    background: var(--primary);
}

.level-dot.active.intermediate {
    background: var(--secondary);
}

.level-dot.active.advanced {
    background: var(--accent-alt);
}

/* ========================================
   Quiz Page
   ======================================== */
.quiz-page {
    padding: 32px 0;
}

.quiz-progress {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.category-badge, .difficulty-badge {
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.category-badge {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.difficulty-badge {
    background: var(--bg);
    color: var(--text-light);
    border: 1px solid var(--border);
}

.quiz-container {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px;
    max-width: 600px;
    margin: 0 auto;
}

.question-text {
    font-size: 24px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 40px;
    line-height: 1.5;
}

/* OX Quiz */
.ox-quiz {
    display: flex;
    justify-content: center;
    gap: 24px;
}

.ox-btn {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 3px solid;
    font-size: 48px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

.o-btn {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary-dark);
}

.o-btn:hover {
    background: var(--primary);
    transform: scale(1.05);
}

.x-btn {
    background: #ffe5e5;
    border-color: var(--accent);
    color: #e55050;
}

.x-btn:hover {
    background: var(--accent);
    color: white;
    transform: scale(1.05);
}

/* Multiple Choice */
.options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-btn {
    padding: 16px 24px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    font-size: 16px;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 12px;
}

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

.option-number {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}

/* Text Input */
.text-quiz {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.text-input {
    padding: 16px 20px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 18px;
    text-align: center;
    outline: none;
    transition: border-color 0.2s ease;
}

.text-input:focus {
    border-color: var(--primary);
}

.submit-btn {
    padding: 16px 32px;
    background: var(--primary);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    transition: background 0.2s ease;
}

.submit-btn:hover {
    background: var(--primary-dark);
}

/* Result Screen */
.quiz-result-screen {
    text-align: center;
}

.result-icon {
    font-size: 80px;
    margin-bottom: 16px;
}

.result-text {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 24px;
}

.result-text.correct {
    color: var(--success);
}

.result-text.wrong {
    color: var(--error);
}

.correct-answer {
    background: var(--bg);
    padding: 16px 24px;
    border-radius: var(--radius-sm);
    margin-bottom: 24px;
    font-size: 18px;
}

.correct-answer .label {
    color: var(--text-light);
    margin-right: 8px;
}

.correct-answer .answer {
    font-weight: 600;
    color: var(--primary-dark);
}

.explanation {
    background: var(--primary-light);
    padding: 24px;
    border-radius: var(--radius-sm);
    text-align: left;
    margin-bottom: 32px;
}

.explanation h3 {
    font-size: 16px;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.explanation p {
    font-size: 15px;
    color: var(--text);
    line-height: 1.7;
}

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

.btn {
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: var(--text);
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--bg);
    color: var(--text-light);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--text);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    padding: 24px 0;
    text-align: center;
    margin-top: auto;
}

.footer p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ========================================
   Responsive - Mobile First
   ======================================== */

/* 모바일 기본 최적화 */
html {
    -webkit-tap-highlight-color: transparent;
    -webkit-text-size-adjust: 100%;
}

/* Safe Area 지원 (iPhone 노치 등) */
body {
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}

/* 터치 디바이스에서 hover 효과 비활성화 */
@media (hover: none) and (pointer: coarse) {
    .quiz-card:hover {
        transform: none;
        box-shadow: var(--shadow);
    }

    .quiz-card:hover .quiz-card-image {
        transform: none;
    }

    .category-tab:hover {
        background: var(--bg);
        color: var(--text-light);
    }

    .category-tab.active:hover {
        background: var(--primary);
        color: var(--text);
    }
}

/* 터치 시 active 상태 */
@media (hover: none) and (pointer: coarse) {
    .quiz-card:active {
        transform: scale(0.98);
        opacity: 0.9;
    }

    .category-tab:active {
        background: var(--primary-light);
        color: var(--primary-dark);
    }

    .ox-btn:active {
        transform: scale(0.95);
    }

    .option-btn:active {
        background: var(--primary-light);
        border-color: var(--primary);
    }

    .btn:active {
        transform: scale(0.97);
        opacity: 0.9;
    }
}

/* 스몰 모바일 (360px 이하) */
@media (max-width: 360px) {
    .container {
        padding: 0 12px;
    }

    .logo-text {
        font-size: 18px;
    }

    .logo-icon {
        font-size: 24px;
    }

    .hero h1 {
        font-size: 20px;
    }

    .hero p {
        font-size: 14px;
    }

    .quiz-container {
        padding: 16px;
    }

    .question-text {
        font-size: 17px;
        margin-bottom: 28px;
    }

    .ox-btn {
        width: 80px;
        height: 80px;
        font-size: 32px;
    }

    .ox-quiz {
        gap: 16px;
    }

    .option-btn {
        padding: 14px 16px;
        font-size: 15px;
    }

    .result-icon {
        font-size: 60px;
    }

    .result-text {
        font-size: 22px;
    }

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

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

/* 모바일 (768px 이하) */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    /* 헤더 모바일 */
    .header .container {
        height: 56px;
    }

    .logo-icon {
        font-size: 24px;
    }

    .logo-text {
        font-size: 18px;
    }

    .level-badge {
        padding: 4px 10px;
        font-size: 12px;
    }

    .level-stats {
        font-size: 12px;
    }

    /* 히어로 모바일 */
    .hero {
        padding: 32px 0;
    }

    .hero h1 {
        font-size: 22px;
    }

    .hero p {
        font-size: 14px;
    }

    /* 카테고리 탭 모바일 - 스와이프 친화적 */
    .categories {
        padding: 16px 0;
    }

    .category-tabs {
        gap: 6px;
        padding: 0 16px 8px;
        margin: 0 -16px;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .category-tabs::-webkit-scrollbar {
        display: none;
    }

    .category-tab {
        padding: 8px 16px;
        font-size: 13px;
        flex-shrink: 0;
    }

    /* 퀴즈 그리드 모바일 */
    .quiz-grid {
        padding: 20px 0;
    }

    .quizzes {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .quiz-card {
        border-radius: 12px;
    }

    .quiz-card-header {
        min-height: 160px;
        padding: 20px;
    }

    .quiz-card-image {
        height: 160px;
    }

    .quiz-card-icon {
        font-size: 40px;
    }

    .quiz-card-question {
        font-size: 15px;
    }

    .quiz-card-body {
        padding: 14px 20px;
    }

    /* 퀴즈 페이지 모바일 */
    .quiz-page {
        padding: 20px 0;
    }

    .quiz-progress {
        gap: 8px;
        margin-bottom: 16px;
    }

    .category-badge, .difficulty-badge {
        padding: 6px 12px;
        font-size: 13px;
    }

    .quiz-container {
        padding: 24px 20px;
        border-radius: 12px;
    }

    .question-text {
        font-size: 18px;
        margin-bottom: 32px;
        line-height: 1.6;
    }

    /* OX 버튼 모바일 - 터치 친화적 */
    .ox-quiz {
        gap: 20px;
    }

    .ox-btn {
        width: 100px;
        height: 100px;
        font-size: 40px;
        border-width: 3px;
    }

    /* 객관식 모바일 - 터치 영역 확대 */
    .options {
        gap: 10px;
    }

    .option-btn {
        padding: 16px 18px;
        font-size: 15px;
        min-height: 56px;
        border-radius: 10px;
    }

    .option-number {
        width: 26px;
        height: 26px;
        font-size: 13px;
        flex-shrink: 0;
    }

    /* 주관식 모바일 */
    .text-input {
        padding: 14px 16px;
        font-size: 16px; /* iOS 줌 방지 */
    }

    .submit-btn {
        padding: 14px 24px;
        font-size: 15px;
        min-height: 50px;
    }

    /* 결과 화면 모바일 */
    .result-icon {
        font-size: 64px;
        margin-bottom: 12px;
    }

    .result-text {
        font-size: 24px;
        margin-bottom: 20px;
    }

    .correct-answer {
        padding: 14px 20px;
        font-size: 16px;
        margin-bottom: 20px;
    }

    .explanation {
        padding: 20px;
        margin-bottom: 24px;
    }

    .explanation h3 {
        font-size: 15px;
        margin-bottom: 10px;
    }

    .explanation p {
        font-size: 14px;
    }

    .result-actions {
        gap: 12px;
    }

    .btn {
        padding: 14px 24px;
        font-size: 14px;
        min-height: 48px;
    }

    /* 푸터 모바일 */
    .footer {
        padding: 20px 0;
        padding-bottom: calc(20px + env(safe-area-inset-bottom));
    }

    .footer p {
        font-size: 12px;
    }
}

/* 태블릿 (769px ~ 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .quizzes {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .quiz-container {
        max-width: 560px;
    }
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.quiz-card {
    animation: fadeIn 0.3s ease;
}

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

.result-icon {
    animation: bounce 0.6s ease;
}

/* 선택된 옵션 스타일 */
.option-btn.selected {
    border-color: var(--primary);
    background: var(--primary-light);
}

.option-btn.correct {
    border-color: var(--success);
    background: rgba(0, 184, 148, 0.15);
    animation: pulse 0.4s ease;
}

.option-btn.wrong {
    border-color: var(--error);
    background: rgba(255, 107, 107, 0.15);
    animation: shake 0.4s ease;
}

.ox-btn.selected {
    transform: scale(1.1);
}

.ox-btn.correct {
    animation: pulse 0.4s ease;
}

.ox-btn.wrong {
    animation: shake 0.4s ease;
}

/* 로딩 상태 */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
}

.loading::after {
    content: "";
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* 빈 상태 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.empty-state-text {
    font-size: 16px;
}

/* 카드 스켈레톤 로딩 */
.skeleton {
    background: linear-gradient(90deg, var(--bg) 25%, var(--border) 50%, var(--bg) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ========================================
   퀴즈 생성 버튼
   ======================================== */
.create-quiz-btn {
    margin-top: 24px;
    padding: 14px 32px;
    background: var(--bg-card);
    border: 2px solid var(--primary-dark);
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-dark);
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.create-quiz-btn .btn-icon {
    font-size: 20px;
    font-weight: 700;
}

.create-quiz-btn:hover {
    background: var(--primary-dark);
    color: white;
    transform: translateY(-2px);
}

.create-quiz-btn:active {
    transform: translateY(0);
}

/* ========================================
   모달
   ======================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1002;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius);
    max-width: 480px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    animation: modalSlideUp 0.3s ease;
    position: relative;
    z-index: 1003;
}

@keyframes modalSlideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-header {
    padding: 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--text-light);
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.2s;
}

.modal-close:hover {
    background: var(--bg);
}

.modal-body {
    padding: 24px;
    position: relative;
    z-index: 1;
    touch-action: auto;
}

.form-group {
    margin-bottom: 24px;
    position: relative;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--text);
    font-size: 15px;
}

.form-group input[type="text"] {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.2s;
    background: white;
    position: relative;
    z-index: 10;
    box-sizing: border-box;
    -webkit-appearance: none;
    touch-action: manipulation;
    -webkit-user-select: text;
    user-select: text;
}

.form-group input[type="text"]:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group input[type="text"]::placeholder {
    color: var(--text-muted);
}

.input-hints {
    margin-top: 10px;
    margin-bottom: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    position: relative;
    z-index: 1;
}

/* 첫번째 form-group이 아래를 가리지 않도록 */
.form-group:first-child {
    position: relative;
    z-index: 1;
    overflow: visible;
}

.form-group:first-child .input-hints {
    pointer-events: auto;
    position: relative;
    z-index: 1;
}

/* 두번째 form-group (topic)이 위에 오도록 */
.form-group:nth-child(2) {
    position: relative;
    z-index: 100;
}

#topic {
    position: relative;
    z-index: 1;
    pointer-events: auto !important;
    touch-action: auto !important;
}

.hint-chip {
    padding: 6px 14px;
    background: var(--bg);
    border-radius: 16px;
    font-size: 13px;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.hint-chip:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
    border-color: var(--primary);
}

.count-buttons {
    display: flex;
    gap: 10px;
}

.count-btn {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s;
}

.count-btn:hover {
    border-color: var(--primary);
    color: var(--primary-dark);
}

.count-btn.active {
    border-color: var(--primary);
    background: var(--primary-light);
    color: var(--primary-dark);
}

.modal-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.modal-footer .btn {
    min-width: 100px;
}

.btn-loader {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ========================================
   토스트 알림
   ======================================== */
.toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    background: var(--text);
    color: white;
    padding: 24px 32px;
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
    z-index: 1005;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all 0.3s ease;
    max-width: 90%;
    text-align: center;
}

.toast.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate(-50%, -50%) scale(1);
}

.toast-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1004;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all 0.3s ease;
}

.toast-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.toast-icon {
    font-size: 48px;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.toast-message {
    font-size: 15px;
    font-weight: 500;
}

.toast-submessage {
    font-size: 13px;
    opacity: 0.8;
}

.toast-close-btn {
    margin-top: 8px;
    padding: 8px 24px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 20px;
    color: white;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s;
}

.toast-close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    background: var(--primary);
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    width: 0;
}

.toast.active .toast-progress {
    animation: toastProgress 60s linear;
}

@keyframes toastProgress {
    from { width: 0; }
    to { width: 100%; }
}

.toast-success {
    background: var(--success);
}

.toast-success .toast-progress {
    display: none;
}

.toast-error {
    background: #e74c3c;
}

.toast-error .toast-progress {
    display: none;
}

/* 모바일 모달 최적화 */
@media (max-width: 768px) {
    .modal-overlay {
        padding: 0;
        align-items: flex-end;
    }

    .modal {
        max-width: 100%;
        max-height: 85vh;
        border-radius: var(--radius) var(--radius) 0 0;
        animation: modalSlideUpMobile 0.3s ease;
    }

    @keyframes modalSlideUpMobile {
        from { transform: translateY(100%); }
        to { transform: translateY(0); }
    }

    .modal-header {
        padding: 20px;
    }

    .modal-header h2 {
        font-size: 18px;
    }

    .modal-body {
        padding: 20px;
        touch-action: auto;
        -webkit-overflow-scrolling: touch;
    }

    .modal-body input[type="text"] {
        font-size: 16px !important; /* iOS 줌 방지 */
        touch-action: manipulation;
        -webkit-transform: translateZ(0);
        transform: translateZ(0);
        -webkit-appearance: none;
    }

    /* 모바일에서 form-group 간 겹침 방지 */
    .modal-body .form-group:first-child {
        z-index: 1;
        margin-bottom: 28px;
    }

    .modal-body .form-group:first-child .input-hints {
        position: static;
    }

    .modal-body .form-group:nth-child(2) {
        z-index: 100;
        transform: translateZ(0);
    }

    .modal-footer {
        padding: 16px 20px;
        padding-bottom: calc(16px + env(safe-area-inset-bottom));
    }

    .count-buttons {
        flex-direction: row;
    }

    .count-btn {
        padding: 14px 12px;
        font-size: 14px;
    }

    .toast {
        top: 50%;
        left: 50%;
        right: auto;
        bottom: auto;
        width: calc(100% - 32px);
        max-width: 320px;
        transform: translate(-50%, -50%) scale(0.8);
    }

    .toast.active {
        transform: translate(-50%, -50%) scale(1);
    }

    .create-quiz-btn {
        padding: 12px 24px;
        font-size: 15px;
    }
}

/* ========================================
   새 퀴즈 유형 스타일
   ======================================== */

/* 공통 퀴즈 이미지 */
.quiz-image-container {
    margin-bottom: 24px;
    text-align: center;
}

.quiz-image-container img {
    max-width: 100%;
    max-height: 250px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
}

/* 그림 보고 단어 맞추기 */
.word-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.word-btn {
    padding: 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.word-btn:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.word-btn.selected {
    border-color: var(--primary);
    background: var(--primary-light);
}

.word-btn.correct {
    border-color: var(--success);
    background: rgba(0, 184, 148, 0.15);
}

.word-btn.wrong {
    border-color: var(--error);
    background: rgba(255, 107, 107, 0.15);
}

/* 숫자 세기 */
.counting-image {
    margin-bottom: 20px;
    text-align: center;
}

.counting-image img {
    max-width: 100%;
    max-height: 200px;
    border-radius: var(--radius-sm);
}

.counting-question {
    font-size: 18px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 20px;
    color: var(--text);
}

.counting-options {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.count-option-btn {
    width: 60px;
    height: 60px;
    border: 2px solid var(--border);
    border-radius: 50%;
    background: var(--bg);
    font-size: 24px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.count-option-btn:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.count-option-btn.selected {
    border-color: var(--primary);
    background: var(--primary-light);
    transform: scale(1.1);
}

.count-option-btn.correct {
    border-color: var(--success);
    background: rgba(0, 184, 148, 0.15);
}

.count-option-btn.wrong {
    border-color: var(--error);
    background: rgba(255, 107, 107, 0.15);
}

/* 빈칸 채우기 */
.fill-blank-question {
    font-size: 20px;
    line-height: 2;
    text-align: center;
    margin-bottom: 24px;
}

.fill-blank-input {
    display: inline-block;
    width: 120px;
    padding: 8px 12px;
    border: 2px solid var(--primary);
    border-radius: var(--radius-sm);
    font-size: 18px;
    text-align: center;
    background: var(--primary-light);
    margin: 0 4px;
}

.fill-blank-input:focus {
    outline: none;
    border-color: var(--primary-dark);
}

.fill-blank-input.correct {
    border-color: var(--success);
    background: rgba(0, 184, 148, 0.15);
}

.fill-blank-input.wrong {
    border-color: var(--error);
    background: rgba(255, 107, 107, 0.15);
}

/* 이미지 선택 */
.image-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.image-option {
    position: relative;
    border: 3px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.2s;
    aspect-ratio: 1;
}

.image-option img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-option:hover {
    border-color: var(--primary);
    transform: scale(1.02);
}

.image-option.selected {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.image-option.correct {
    border-color: var(--success);
    box-shadow: 0 0 0 3px rgba(0, 184, 148, 0.3);
}

.image-option.wrong {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.3);
}

.image-option-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 8px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    font-size: 14px;
    text-align: center;
}

/* 연결하기 (매칭) */
.matching-container {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 24px;
}

.matching-column {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.match-item {
    padding: 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    font-size: 16px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.match-item:hover {
    border-color: var(--primary);
}

.match-item.selected {
    border-color: var(--primary);
    background: var(--primary-light);
}

.match-item.matched {
    border-color: var(--success);
    background: rgba(0, 184, 148, 0.2);
    color: var(--success);
}

.match-item.fade-out {
    opacity: 0.3;
    transform: scale(0.95);
    pointer-events: none;
    transition: all 0.3s ease;
}

.match-item.wrong {
    border-color: var(--error);
    background: rgba(255, 107, 107, 0.1);
}

.matching-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.matching-lines line {
    stroke: var(--primary);
    stroke-width: 2;
}

/* 순서 맞추기 */
.drag-items {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.drag-item {
    padding: 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    font-size: 16px;
    cursor: grab;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 12px;
    user-select: none;
}

.drag-item:active {
    cursor: grabbing;
}

.drag-item.dragging {
    opacity: 0.5;
    border-color: var(--primary);
}

.drag-item.drag-over {
    border-color: var(--primary);
    background: var(--primary-light);
}

.drag-handle {
    color: var(--text-muted);
    font-size: 18px;
}

.drag-item-content {
    flex: 1;
}

.drag-item img {
    width: 40px;
    height: 40px;
    border-radius: 4px;
    object-fit: cover;
}

.drag-item.correct {
    border-color: var(--success);
    background: rgba(0, 184, 148, 0.1);
}

.drag-item.wrong {
    border-color: var(--error);
    background: rgba(255, 107, 107, 0.1);
}

/* 모바일 새 퀴즈 유형 */
@media (max-width: 768px) {
    .word-options {
        grid-template-columns: 1fr;
    }

    .word-btn {
        padding: 14px;
        font-size: 16px;
    }

    .count-option-btn {
        width: 56px;
        height: 56px;
        font-size: 22px;
    }

    .fill-blank-input {
        width: 100px;
        font-size: 16px;
    }

    .image-grid {
        gap: 8px;
    }

    .matching-container {
        gap: 12px;
    }

    .match-item {
        padding: 12px;
        font-size: 14px;
    }

    .drag-item {
        padding: 12px;
        font-size: 15px;
    }
}