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

body {
    font-family: 'Noto Sans KR', sans-serif;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    min-height: 100vh;
    color: #333;
    overflow-x: hidden;
}

/* 유틸리티 간격 */
.mb-4 { margin-bottom: 1.25rem; }

/* 시작 화면이 활성화될 때 스크롤 방지 */
body.no-scroll {
    overflow: hidden;
    height: 100vh;
}

.screen {
    display: none;
    min-height: 100vh;
    padding: 20px;
    padding-bottom: 80px; /* 고정 푸터와 겹치지 않도록 하단 여백 */
}

/* 시작 화면 특별 설정 */
#startScreen {
    height: 100vh;
    overflow: hidden;
}

.screen.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 공통 중앙 정렬 래퍼 (특정 화면 전용) */
.center-wrapper {
    min-height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* 공통 푸터 */
.app-footer {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    justify-content: center;
    background: rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(6px);
}

.app-footer .footer-content {
    color: #fff;
    font-size: 0.95rem;
    line-height: 1;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.app-footer .footer-content .sep {
    opacity: 0.8;
}

.app-footer a {
    color: #fff;
    text-decoration: none;
    border-bottom: 1px dashed rgba(255,255,255,0.6);
}

.app-footer a:hover {
    border-bottom-style: solid;
}

/* 시작 화면 */
.golden-bell {
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 40px 30px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    width: 100%;
    backdrop-filter: blur(10px);
    max-height: 90vh;
    overflow-y: auto;
}

.bell-icon {
    font-size: 80px;
    color: #ffd700;
    margin-bottom: 20px;
    animation: bellRing 2s infinite;
}

@keyframes bellRing {
    0%, 50%, 100% { transform: rotate(0deg); }
    10%, 30% { transform: rotate(-10deg); }
    20%, 40% { transform: rotate(10deg); }
}

.main-title {
    font-size: 3rem;
    font-weight: 700;
    color: #1e3c72;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.subtitle {
    font-size: 1.5rem;
    color: #2a5298;
    margin-bottom: 10px;
    font-weight: 500;
}

.range, .organizer {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 8px;
}

.start-options {
    margin: 40px 0;
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.start-btn {
    padding: 15px 25px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.start-btn.primary {
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    color: #1e3c72;
    box-shadow: 0 8px 20px rgba(255, 215, 0, 0.3);
}

.start-btn.primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(255, 215, 0, 0.4);
}

.start-btn.secondary {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.start-btn.secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(102, 126, 234, 0.4);
}

.start-btn.study {
    background: linear-gradient(45deg, #4caf50, #45a049);
    color: white;
    box-shadow: 0 8px 20px rgba(76, 175, 80, 0.3);
}

.start-btn.study:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(76, 175, 80, 0.4);
}

.info-box {
    background: rgba(30, 60, 114, 0.1);
    border-radius: 15px;
    padding: 20px;
    margin-top: 30px;
}

.info-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 10px;
    font-size: 1rem;
    color: #1e3c72;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-item i {
    color: #ffd700;
}

/* 교회 로고 */
.church-logo {
    margin-top: 30px;
    text-align: center;
}

.church-logo img {
    max-height: 60px;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.church-logo img:hover {
    opacity: 1;
}

/* 퀴즈 화면 */
#quizScreen {
    /* display는 .screen / .screen.active 규칙에 따름 */
    padding: 0;
}

.quiz-container {
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    min-height: 90vh;
    margin-top: 5vh;
    margin-bottom: 5vh;
}

.quiz-header {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: white;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.progress-container {
    flex: 1;
    min-width: 200px;
}

.progress-bar {
    background: rgba(255, 255, 255, 0.3);
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    background: linear-gradient(90deg, #ffd700, #ffed4e);
    height: 100%;
    width: 0%;
    transition: width 0.5s ease;
}

.progress-text {
    font-size: 1rem;
    font-weight: 500;
}

.quiz-info {
    display: flex;
    gap: 30px;
    align-items: center;
}

.score-info, .timer {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
    font-weight: 500;
}

.question-container {
    padding: 40px 30px;
    text-align: center;
}

/* 정/오답 피드백 */
.feedback {
    margin: 0 30px 20px;
    padding: 14px 16px;
    border-radius: 12px;
    font-weight: 600;
    text-align: center;
}
.feedback.correct {
    background: rgba(76, 175, 80, 0.12);
    color: #2e7d32;
    border: 2px solid rgba(76, 175, 80, 0.35);
}
.feedback.incorrect {
    background: rgba(244, 67, 54, 0.12);
    color: #c62828;
    border: 2px solid rgba(244, 67, 54, 0.35);
}

.question-number {
    font-size: 1.2rem;
    color: #ffd700;
    font-weight: 600;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: white;
    padding: 10px 20px;
    border-radius: 50px;
    display: inline-block;
}

.question-text {
    font-size: 1.4rem;
    line-height: 1.6;
    color: #1e3c72;
    font-weight: 500;
    margin-bottom: 20px;
}

.options-container {
    padding: 0 30px 30px;
    display: grid;
    gap: 15px;
}

/* 주관식 입력 */
.short-answer-container {
    display: flex;
    gap: 10px;
    justify-content: center;
    align-items: center;
    padding: 0 10px 10px;
}

.short-answer-input {
    flex: 1;
    max-width: 520px;
    background: #fff;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 14px 16px;
    font-size: 1.05rem;
    transition: all 0.2s ease;
}

.short-answer-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.15);
}

.submit-answer-btn {
    white-space: nowrap;
}

.option-btn {
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 15px;
    padding: 20px;
    text-align: left;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 15px;
}

.option-btn:hover {
    border-color: #2a5298;
    background: rgba(42, 82, 152, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.option-number {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
}

.option-text {
    flex: 1;
}

.option-btn.selected {
    border-color: #ffd700;
    background: rgba(255, 215, 0, 0.1);
}

.option-btn.correct {
    border-color: #4caf50;
    background: rgba(76, 175, 80, 0.1);
}

.option-btn.incorrect {
    border-color: #f44336;
    background: rgba(244, 67, 54, 0.1);
}

.option-btn.correct .option-number {
    background: linear-gradient(135deg, #4caf50, #45a049);
}

.option-btn.incorrect .option-number {
    background: linear-gradient(135deg, #f44336, #d32f2f);
}

.quiz-actions {
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    border-top: 1px solid #e0e0e0;
}

.action-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.action-btn.primary {
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    color: #1e3c72;
}

.action-btn.primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 215, 0, 0.3);
}

.action-btn.secondary {
    background: #f0f0f0;
    color: #666;
}

.action-btn.secondary:hover {
    background: #e0e0e0;
}

.action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.answer-explanation {
    background: rgba(255, 215, 0, 0.1);
    border-top: 3px solid #ffd700;
    margin: 20px 30px;
    border-radius: 10px;
    animation: fadeIn 0.5s ease;
}

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

.explanation-content {
    padding: 20px;
}

.explanation-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e3c72;
    margin-bottom: 10px;
}

.explanation-title i {
    color: #ffd700;
}

.explanation-text {
    color: #666;
    line-height: 1.5;
}

/* 결과 화면 */
.result-container {
    max-width: 600px;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.result-header {
    margin-bottom: 40px;
}

.result-icon {
    font-size: 80px;
    color: #ffd700;
    margin-bottom: 20px;
}

.result-title {
    font-size: 2.5rem;
    color: #1e3c72;
    font-weight: 700;
    margin-bottom: 10px;
}

.result-subtitle {
    font-size: 1.2rem;
    color: #666;
}

.result-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.stat-item {
    background: rgba(30, 60, 114, 0.1);
    border-radius: 15px;
    padding: 20px;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: #1e3c72;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9rem;
    color: #666;
}

.result-message {
    background: rgba(255, 215, 0, 0.1);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 30px;
    font-size: 1.1rem;
    color: #1e3c72;
    font-weight: 500;
}

.result-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 답안 리뷰 화면 */
.review-container {
    max-width: 800px;
    width: 100%;
    height: 90vh;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
}

.review-header {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: white;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.review-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.review-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px 30px;
}

.review-item {
    background: white;
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
    border-left: 5px solid #e0e0e0;
}

.review-item.correct {
    border-left-color: #4caf50;
}

.review-item.incorrect {
    border-left-color: #f44336;
}

.review-question {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e3c72;
    margin-bottom: 15px;
}

.review-options {
    margin-bottom: 15px;
}

.review-option {
    padding: 8px 0;
    font-size: 1rem;
}

.review-option.user-answer {
    color: #f44336;
    font-weight: 500;
}

.review-option.correct-answer {
    color: #4caf50;
    font-weight: 500;
}

.review-explanation {
    background: rgba(255, 215, 0, 0.1);
    border-radius: 10px;
    padding: 15px;
    font-size: 0.95rem;
    color: #666;
    line-height: 1.5;
}

/* 범위 선택 화면 */
.section-select-container {
    max-width: 600px;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    text-align: center;
    margin: 5vh auto;
}

.section-select-header h2 {
    color: #1e3c72;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.section-select-header p {
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.section-options {
    display: grid;
    gap: 15px;
    margin-bottom: 30px;
}

.section-btn {
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 15px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-btn:hover {
    border-color: #667eea;
    background: rgba(102, 126, 234, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.section-btn.all-sections {
    border-color: #ffd700;
    background: rgba(255, 215, 0, 0.1);
}

.section-btn.all-sections:hover {
    border-color: #ffd700;
    background: rgba(255, 215, 0, 0.2);
}

.section-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1e3c72;
}

.section-count {
    font-size: 1rem;
    color: #666;
    background: rgba(102, 126, 234, 0.1);
    padding: 5px 12px;
    border-radius: 20px;
}

.section-btn.all-sections .section-count {
    background: rgba(255, 215, 0, 0.3);
    color: #b8860b;
}

.section-actions {
    text-align: center;
}

/* 공부하기 화면 - 한 장 스타일 */
.study-sheet-container {
    max-width: 900px;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    margin: 3vh auto 5vh;
    overflow: hidden;
}

.study-sheet-header {
    background: linear-gradient(135deg, var(--theme-start, #4caf50), var(--theme-end, #45a049));
    color: white;
    padding: 25px 30px;
    text-align: center;
    position: relative;
}

.study-sheet-header .close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 1.2rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.3s ease;
}

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

.study-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 8px;
}

.study-title h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0;
}

.study-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

.study-sheet-content {
    padding: 30px;
    max-height: 70vh;
    overflow-y: auto;
}

.study-section {
    margin-bottom: 40px;
}

.study-section:last-child {
    margin-bottom: 0;
}

.study-section-title {
    background: linear-gradient(135deg, var(--theme-start, #4caf50), var(--theme-end, #45a049));
    color: white;
    padding: 15px 25px;
    border-radius: 10px;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 25px;
    text-align: center;
}

.study-question-item {
    background: white;
    border: 2px solid #e8f5e8;
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.study-question-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.study-question-num {
    background: linear-gradient(135deg, var(--theme-start, #4caf50), var(--theme-end, #45a049));
    color: white;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
}

.study-question-text {
    flex: 1;
    font-size: 1.1rem;
    font-weight: 500;
    color: #1e3c72;
    line-height: 1.5;
}

.study-options-list {
    margin: 20px 0;
    padding-left: 20px;
}

.study-option-item {
    margin-bottom: 8px;
    font-size: 1rem;
    color: #555;
    display: flex;
    align-items: center;
    gap: 8px;
}

.study-option-number {
    font-weight: 600;
    color: #667eea;
    min-width: 20px;
}

.study-answer-section {
    background: rgba(76, 175, 80, 0.08);
    border-left: 4px solid #4caf50;
    border-radius: 8px;
    padding: 20px;
    margin-top: 20px;
}

.study-answer-line {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.study-answer-line:last-child {
    margin-bottom: 0;
}

.study-answer-label {
    font-weight: 600;
    color: #4caf50;
    min-width: 50px;
}

.study-answer-text {
    color: #2e7d32;
    font-weight: 500;
}

.study-explanation-text {
    color: #666;
    line-height: 1.5;
}

/* 공부하기 섹션 선택 화면 */
.study-section-select-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 40px;
    max-width: 600px;
    width: 100%;
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.study-section-select-header {
    text-align: center;
    margin-bottom: 30px;
}

.study-section-select-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #1e3c72;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.study-section-select-header p {
    font-size: 1.1rem;
    color: #666;
}

.study-section-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 30px;
}

.study-section-btn {
    background: linear-gradient(135deg, var(--theme-start, #4caf50) 0%, var(--theme-end, #45a049) 100%);
    color: white;
    border: none;
    border-radius: 15px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}

.study-section-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.4);
}

.study-section-btn.all-sections {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

/* 테마 클래스: 각 섹션/전체용 색상 변수 */
.theme-ezra { --theme-start: #667eea; --theme-end: #764ba2; --theme-accent: #667eea; }
.theme-nehemiah { --theme-start: #4caf50; --theme-end: #45a049; --theme-accent: #4caf50; }
.theme-esther { --theme-start: #ff7e5f; --theme-end: #feb47b; --theme-accent: #ff7e5f; }
.theme-all { --theme-start: #00bcd4; --theme-end: #2196f3; --theme-accent: #0d47a1; }

/* 예비 테마 (필요시 확장) */
.theme-alt1 { --theme-start: #00bcd4; --theme-end: #2196f3; --theme-accent: #2196f3; }
.theme-alt2 { --theme-start: #ff6a88; --theme-end: #ff99ac; --theme-accent: #ff6a88; }

.study-section-btn.all-sections:hover {
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.study-section-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.study-section-count {
    font-size: 0.9rem;
    opacity: 0.9;
}

.study-section-actions {
    text-align: center;
}

/* 문제 수 선택 화면 */
.question-count-select-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 40px;
    max-width: 600px;
    width: 100%;
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.question-count-select-header {
    text-align: center;
    margin-bottom: 30px;
}

.question-count-select-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #1e3c72;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.question-count-select-header p {
    font-size: 1.1rem;
    color: #666;
}

.question-count-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
}

.count-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 15px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.count-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.count-btn.all-count {
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    color: #1e3c72;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.count-btn.all-count:hover {
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.4);
}

.count-number {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.count-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.question-count-actions {
    text-align: center;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .screen {
        padding: 10px;
        padding-bottom: 70px; /* 모바일에서도 푸터와 간섭 방지 */
    }
    
    .golden-bell {
        padding: 30px 20px;
        max-height: 95vh;
    }
    
    .main-title {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
    
    .bell-icon {
        font-size: 60px;
        margin-bottom: 15px;
    }
    
    .start-options {
        flex-direction: column;
        align-items: center;
        margin: 30px 0;
    }
    
    .info-box {
        margin-top: 20px;
    }
    
    .church-logo img {
        max-height: 50px;
    }
    
    .study-section-select-container,
    .question-count-select-container {
        padding: 30px 20px;
    }
    
    .question-count-options {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .count-number {
        font-size: 1.3rem;
    }
    
    .quiz-header {
        flex-direction: column;
        text-align: center;
    }
    
    .quiz-info {
        gap: 20px;
    }
    
    .question-container {
        padding: 30px 20px;
    }
    
    .question-text {
        font-size: 1.2rem;
    }
    
    .options-container {
        padding: 0 20px 20px;
    }
    
    .quiz-actions {
        flex-direction: column;
        padding: 20px;
    }
    
    .result-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    /* 공부하기 모드 반응형 */
    .study-sheet-container {
        margin: 2vh auto 3vh;
        max-height: 96vh;
    }
    
    .study-sheet-header {
        padding: 20px;
    }
    
    .study-title h2 {
        font-size: 1.5rem;
    }
    
    .study-sheet-content {
        padding: 20px;
        max-height: 75vh;
    }
    
    .study-question-item {
        padding: 20px;
    }
    
    .study-question-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .study-question-text {
        font-size: 1rem;
    }
    
    .study-answer-section {
        padding: 15px;
    }
}