:root {
    --primary: #4f46e5;
    --secondary: #7c3aed;
    --bg: #f8fafc;
    --card: #ffffff;
    --text: #1e293b;
}

.screen {
    display: none;
}

/* active 클래스가 붙은 화면만 보임 */
.screen.active {
    display: block;
}

body { 
    font-family: 'Pretendard', sans-serif;
    background-color: var(--bg); 
    margin: 0; padding: 0; display: flex; justify-content: center; min-height: 100vh;
    padding-bottom: 80px !important;
    /* 본문 가림 방지 여백 */
}

.quiz-app {
    width: 100%;
    max-width: 600px !important; /* 번역 시 화면 커짐 방지 고정 */
    background: var(--card);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 0 40px rgba(0,0,0,0.05);
    margin: 0 auto;
    overflow-x: hidden !important;
    position: relative;
}

.top-window-notice {
    display: none;
    background: #fff9c4; border-bottom: 1px solid #fbc02d; 
    padding: 10px; text-align: center;
    cursor: pointer; font-size: 1.3rem; font-weight: 800; color: #f57f17;
}

.header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white; padding: 25px 20px; text-align: center;
    font-size: 1.8rem; font-weight: 900; letter-spacing: -1px;
}

.content-area { padding: 20px; flex: 1; display: flex; flex-direction: column; align-items: center; }

.menu-screen, .quiz-screen { display: none; width: 100%; text-align: center; }
.active { display: flex; flex-direction: column; align-items: center; }

.menu-intro { margin: 15px 0 25px 0; text-align: center; }
.menu-intro h2 { font-size: 1.4rem; font-weight: 900; color: var(--primary); margin: 0 0 8px 0; }
.menu-intro p { font-size: 1.1rem; font-weight: 700; color: #64748b; margin: 0; }

.category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; width: 100%; }

.cat-btn {
    background: #fff;
    border: 1px solid #e2e8f0; 
    cursor: pointer; transition: 0.2s; 
    font-size: 1.2rem; font-weight: 800; color: var(--text);
    height: auto !important;
    min-height: 60px;
    padding: 15px 10px !important;
    display: flex !important;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.cat-btn:active { transform: scale(0.97); }
.cat-btn .emoji { font-size: 2.2rem; } 

.situation-tag { background: #ffeb3b; padding: 6px 20px; border-radius: 50px; font-weight: 900; font-size: 0.95rem; margin-bottom: 12px; display: inline-block; }

.kr-text { font-size: 2.4rem; font-weight: 900; color: #000; margin: 10px 0 5px 0; word-break: keep-all; }
.rom-text { font-size: 1.7rem; color: var(--primary); font-weight: 700; margin-bottom: 25px; font-style: italic; }

/* 상단 버튼 그룹 */
.control-group { display: flex; justify-content: center; gap: 15px; margin-bottom: 5px !important; }
.btn-main {
    width: 100px;
    height: 85px; border-radius: 20px; border: 1px solid #e2e8f0;
    background: #fff; cursor: pointer; display: flex; flex-direction: column;
    justify-content: center; align-items: center; font-weight: 800;
}
.btn-main.recording { background: #ef4444; color: white; border: none; }
.btn-main .icon { font-size: 1.8rem; margin-bottom: 4px; }
.btn-main span { font-size: 0.9rem; color: #64748b; }

.options-container { display: grid; gap: 5px !important; width: 100%; max-width: 550px; margin-top: 0 !important; }
.opt-item {
    background: #fff;
    border: 2.5px solid var(--primary); color: var(--primary); 
    border-radius: 15px; font-weight: 800; font-size: 1.2rem; cursor: pointer;
    height: auto !important;
    min-height: 60px;
    padding: 15px 10px !important;
    display: flex !important;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.back-link { 
    display: inline-block;
    margin-top: 25px; 
    background: #f1f5f9; 
    border: 1px solid #e2e8f0; 
    color: #64748b;
    padding: 12px 20px; 
    border-radius: 12px; 
    cursor: pointer; 
    font-weight: 800;
    font-size: 1.2rem;
    text-decoration: none; 
    margin-bottom: 10px;
    margin-right: 5px;
}

.hint-btn { background: #ffeb3b !important; color: #000 !important; border: 1px solid #fbc02d !important; }

/* 광고 배너 */
.game-ad-bar {
    width: 100%; max-width: 900px; background: #ffffff; border: 2px solid #e2e8f0; border-radius: 20px;
    padding: 25px 15px 15px 15px; display: flex; flex-direction: column; align-items: center; gap: 12px;
    box-sizing: border-box; margin: 20px auto; box-shadow: 0 4px 15px rgba(0,0,0,0.1); position: relative;
}

.korea-badge {
    position: absolute; top: -15px; left: 20px; width: 50px; height: 50px; background: #fff;
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 2rem; box-shadow: 0 4px 8px rgba(0,0,0,0.2); z-index: 10; border: 3px solid #ffeb3b;
}

.esim-btn-link {
    background: linear-gradient(135deg, #ffeb3b, #fbc02d);
    color: #000; padding: 15px !important; border-radius: 15px; font-size: 1.7rem; text-decoration: none; font-weight: 900;
    box-shadow: 0 6px 0px #d4a017; transition: all 0.1s; 
    white-space: normal !important; display: inline-block !important; width: 90% !important; height: auto !important; line-height: 1.2 !important;
}
.esim-btn-link:active { transform: translateY(3px); box-shadow: 0 2px 0px #d4a017; }
.ad-moving-text { color: #1e293b; font-size: 17px; font-weight: 800; text-align: center; }    

.wide-slim-banner {
    display: block !important; width: 100% !important; height: auto !important; aspect-ratio: 16 / 9; margin: 20px auto !important;
    background-image: url('https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjS3ET9dgUnpGVb3ecrJRIbEZ5mA1HoKOeLoztQyGvP1h9oZeh88HzBoUCYlhJrfaR5tRjXaigskl9X5Bb5W6ZPIpsys9DIu5ck0Q0RZzpkiZEDvY-v4fLZ2-BUhASncMlDST9bDQEJMqZGrLAdWtP9cvh1zQQw57hiW_RLwCDmgmYpG8yWUH_CeNuuSps/s1280/%EC%82%AC%EB%B3%B8%EC%9D%98%20%EC%82%AC%EB%B3%B8%20%2810%29.png');
    background-size: contain !important; background-repeat: no-repeat !important; background-position: center !important;
    border-radius: 15px; text-decoration: none; box-shadow: 0 4px 12px rgba(0,0,0,0.1); overflow: hidden; visibility: visible !important;
    opacity: 1 !important;
}

@media (max-width: 600px) {
    .wide-slim-banner { width: 100%; height: 100px; }
    .kr-text { font-size: 2.2rem; }
    .btn-main { width: 85px; height: 80px; }
    .ad-moving-text { font-size: 15px; }
    .menu-intro h2 { font-size: 1.3rem; } 
    .cat-btn { font-size: 1.1rem; } 
}      

.big-korea-badge {
    width: 75px; height: 75px; background: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 3rem; box-shadow: 0 6px 12px rgba(0,0,0,0.2); border: 4px solid #ffeb3b; margin: 0 auto -10px auto; z-index: 5; position: relative;
    animation: bounce 2s infinite;
}
@keyframes bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

/* 팁 컨테이너 */
.tip-container {
    background: #fff9db !important; border-radius: 12px !important;
    padding: 5px 12px !important; margin-bottom: 8px !important; border-left: 5px solid #fcc419 !important; text-align: left !important;
    font-size: 0.7rem !important; line-height: 1.4 !important;
}
.tip-title { display: flex !important; align-items: center !important; gap: 4px !important; margin-bottom: 2px !important; font-weight: bold !important; color: #925211 !important; font-size: 0.85rem !important; }

/* 하단 메뉴 바 스타일 */
.bottom-menu {
    position: fixed !important; bottom: 0 !important; left: 0 !important; width: 100% !important; height: 65px !important;
    background: #ffffff !important; display: flex !important; justify-content: space-around !important; align-items: center !important;
    border-top: 1px solid #ddd !important; box-shadow: 0 -3px 10px rgba(0,0,0,0.1) !important; z-index: 10000 !important;
    padding-bottom: env(safe-area-inset-bottom) !important;
}
.menu-item { background: none !important; border: none !important; display: flex !important; flex-direction: column !important; align-items: center !important; cursor: pointer !important; flex: 1 !important; }
.menu-emoji { font-size: 20px !important; margin-bottom: 2px !important; }
.menu-label { font-size: 10px !important; color: #333 !important; font-weight: bold !important; }

#guide-box, #guide-content { animation: fadeIn 0.3s ease-in-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-5px); } to { opacity: 1; transform: translateY(0); } }

#feedback { min-height: 1em !important; margin: 2px 0 !important; padding: 0 !important; display: flex; justify-content: center; align-items: center; }
.answer-text { font-size: 1.4rem; font-weight: 800; color: #4f46e5; padding: 5px 10px; border-bottom: 2px solid #e2e8f0; }

*, *:before, *:after { box-sizing: border-box !important; }
html, body { width: 100% !important; max-width: 100% !important; overflow-x: hidden !important; margin: 0; padding: 0; }

#category-tip-text, #teacher-tip-text, .tip-container, .guide-content, .kr-text, .rom-text, p, div, span, button, a {
    white-space: normal !important; word-break: break-word !important; overflow-wrap: anywhere !important; height: auto !important;
}

/* 팝업 창 레이어 */
.popup-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.6); display: none; justify-content: center; align-items: center; z-index: 99999; }
.popup-card { width: 80%; max-width: 300px; background: #fff; border-radius: 14px; padding: 14px 14px; box-shadow: 0 10px 25px rgba(0,0,0,0.3); font-family: 'Segoe UI', Arial, sans-serif; text-align: center; }
.popup-card h2 { font-size: 16px; font-weight: 800; margin-top: 0; margin-bottom: 3px; color: #333; }
.sub-title { font-size: 11px; color: #4f46e5; margin-bottom: 8px; }
.features { background: #f8fafc; padding: 6px 10px; border-radius: 8px; margin-bottom: 8px; text-align: left; display: inline-block; width: 90%; }
.features p { margin: 3px 0; font-size: 11px; font-weight: 600; color: #475569; }
.warning-box { background: #fff5f5; border: 1px solid #feb2b2; border-radius: 8px; padding: 6px 8px; margin-bottom: 8px; display: flex; align-items: center; gap: 6px; text-align: left; }
.warning-emoji { font-size: 14px; }
.warning-text { font-size: 10px; color: #c53030; margin: 0; line-height: 1.3; }
.buttons { margin-top: 8px; display: flex; flex-direction: column; gap: 6px; width: 100%; align-items: center; }
.buttons a { display: block; width: 90%; text-decoration: none; }
.buttons button { width: 100%; padding: 7px; border: none; border-radius: 8px; background: #4f46e5; color: white; font-size: 12px; font-weight: bold; cursor: pointer; box-shadow: 0 2px 0 #3730a3; transition: transform 0.1s; }
.buttons button:active { transform: translateY(1px); box-shadow: 0 1px 0 #3730a3; }
.buttons a:nth-child(2) button { background: #10b981; box-shadow: 0 2px 0 #065f46; }
.buttons a:nth-child(2) button:active { box-shadow: 0 1px 0 #065f46; }