/* 역사 탐험 퀘스트 — 흙·돌·나무 느낌의 따뜻한 색 */
@font-face {
    font-family: 'Pretendard';
    src: url('../fonts/PretendardVariable.woff2') format('woff2');
    font-style: normal;
    font-weight: 45 920;
    font-display: swap;
}

:root {
    --bg: #fcf9f2;
    --bg-dot: #ebdcc4;
    --card: #ffffff;
    --ink: #2b221c;
    --muted: #736357;
    --line: #e6d7c1;
    --accent: #d9480f;
    --accent-dark: #b83806;
    --accent-soft: #fff1e6;
    --good: #15803d;
    --good-soft: #dcfce7;
    --bad: #b91c1c;
    --bad-soft: #fee2e2;
    --info: #1d4ed8;
    --info-soft: #eff6ff;
    --gold: #b45309;
    --gold-soft: #fef3c7;
    --radius: 22px;
    --shadow-sm: 0 2px 6px rgba(43, 34, 28, 0.04), 0 1px 2px rgba(43, 34, 28, 0.03);
    --shadow: 0 6px 18px -2px rgba(43, 34, 28, 0.06), 0 2px 6px -1px rgba(43, 34, 28, 0.04);
    --shadow-lg: 0 16px 36px -4px rgba(43, 34, 28, 0.1), 0 4px 12px -2px rgba(43, 34, 28, 0.05);
    --font-body: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', sans-serif;
    --font-title: var(--font-body);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    background-color: var(--bg);
    background-image: radial-gradient(var(--bg-dot) 1.5px, transparent 1.5px);
    background-size: 24px 24px;
    color: var(--ink);
    font-family: var(--font-body);
    font-kerning: normal;
    -webkit-font-smoothing: antialiased;
    font-size: 18px;
    line-height: 1.65;
    min-height: 100vh;
    min-height: 100dvh;
    touch-action: manipulation;
    word-break: keep-all;
    overflow-wrap: break-word;
}
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--info); outline-offset: 2px; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

#app { max-width: 780px; margin: 0 auto; padding: 0 18px 52px; }

h1, h2, h3, .title-font { font-family: var(--font-title); font-weight: 700; letter-spacing: -.025em; line-height: 1.35; margin: 0; }
h1 { font-size: 32px; }
h2 { font-size: 25px; }
h3 { font-size: 21px; }
p { margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 15px; }
.center { text-align: center; }
.stack > * + * { margin-top: 14px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }

/* ---------- 상단 막대 (플로팅 글래스모피즘 효과) ---------- */
.topbar {
    position: sticky; top: 0; z-index: 10;
    display: flex; align-items: center; gap: 10px;
    padding: 10px 14px; margin: 0 -14px 10px;
    background: rgba(252, 249, 242, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1.5px solid rgba(230, 215, 193, 0.7);
    border-radius: 0 0 16px 16px;
    box-shadow: 0 2px 10px rgba(43, 34, 28, 0.03);
}
.topbar .title { font-family: var(--font-title); font-size: 20px; font-weight: 700; flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; letter-spacing: -.02em; }
.topbar .home-btn { padding-left: 12px; padding-right: 12px; font-size: 18px; flex: none; border-radius: 14px; }
.topbar > .btn, .topbar > .chip { flex: none; white-space: nowrap; }
.topbar .bgm-toggle { padding-left: 12px; padding-right: 12px; font-size: 18px; border-radius: 14px; }
.topbar .bgm-toggle[aria-pressed="true"] { background: var(--accent-soft); border-color: #f0c4a4; border-bottom-color: #e0a77f; }
.chip {
    display: inline-flex; align-items: center; gap: 6px;
    background: #ffffff; border: 2px solid var(--line); border-radius: 999px;
    padding: 5px 14px; font-size: 15px; font-weight: 600; white-space: nowrap;
    box-shadow: var(--shadow-sm);
}

/* ---------- 버튼 ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    border: none; border-radius: 16px; padding: 12px 22px;
    font-family: var(--font-title); font-size: 18px; font-weight: 700; letter-spacing: -.02em;
    background: var(--card); color: var(--ink);
    border: 2px solid var(--line);
    border-bottom: 4px solid #d4c2a8;
    box-shadow: var(--shadow-sm);
    transition: transform 0.12s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.15s, border-color 0.15s, background 0.15s;
    min-height: 52px;
}
.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    border-bottom-width: 4px;
    box-shadow: 0 6px 14px rgba(43, 34, 28, 0.08);
}
.btn:active:not(:disabled) {
    transform: translateY(2px);
    border-bottom-width: 2px;
    box-shadow: 0 1px 2px rgba(43, 34, 28, 0.04);
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary {
    background: linear-gradient(180deg, #ea580c 0%, var(--accent) 100%);
    color: #fff;
    border-color: #c2410c;
    border-bottom-color: var(--accent-dark);
    box-shadow: 0 4px 12px rgba(217, 72, 15, 0.25);
}
.btn-primary:hover:not(:disabled) {
    background: linear-gradient(180deg, #f97316 0%, #ea580c 100%);
    box-shadow: 0 8px 20px rgba(217, 72, 15, 0.35);
}
.btn-good {
    background: linear-gradient(180deg, #16a34a 0%, var(--good) 100%);
    color: #fff;
    border-color: #15803d;
    border-bottom-color: #166534;
    box-shadow: 0 4px 12px rgba(22, 163, 74, 0.25);
}
.btn-good:hover:not(:disabled) {
    background: linear-gradient(180deg, #22c55e 0%, #16a34a 100%);
    box-shadow: 0 8px 20px rgba(22, 163, 74, 0.35);
}
.btn-small { min-height: 40px; padding: 6px 14px; font-size: 15px; border-radius: 12px; }
.btn-block { width: 100%; }
.btn-icon { min-width: 44px; min-height: 44px; padding: 6px 10px; }

/* ---------- 카드 ---------- */
.card {
    background: var(--card); border-radius: var(--radius);
    padding: 24px; box-shadow: var(--shadow); border: 2px solid var(--line);
    transition: box-shadow 0.2s, border-color 0.2s;
}
.card + .card { margin-top: 18px; }
.card-accent {
    background: linear-gradient(180deg, #fffbf7 0%, var(--accent-soft) 100%);
    border-color: #fdba74;
}

/* ---------- 선택지 ---------- */
.choices { display: grid; gap: 12px; margin-top: 16px; }
@media (min-width: 620px) { .choices.two-col { grid-template-columns: 1fr 1fr; } }
.choice {
    display: flex; align-items: center; gap: 12px; text-align: left;
    width: 100%; min-height: 62px; padding: 14px 18px;
    background: #ffffff; border: 2.5px solid var(--line); border-radius: 18px;
    font-size: 18px; line-height: 1.45; font-weight: 500;
    box-shadow: var(--shadow-sm);
    transition: border-color 0.18s, background 0.18s, transform 0.12s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.18s;
}
.choice:hover:not(:disabled) {
    border-color: #fb923c;
    background: #fffdfa;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -2px rgba(217, 72, 15, 0.1);
}
.choice:active:not(:disabled) {
    transform: translateY(1px);
    box-shadow: var(--shadow-sm);
}
.choice .mark { font-size: 22px; flex-shrink: 0; width: 28px; text-align: center; }
.choice.correct {
    background: linear-gradient(180deg, #f0fdf4 0%, var(--good-soft) 100%);
    border-color: var(--good);
    color: #14532d;
    box-shadow: 0 4px 14px rgba(22, 163, 74, 0.15);
}
.choice.wrong {
    background: linear-gradient(180deg, #fff1f2 0%, var(--bad-soft) 100%);
    border-color: var(--bad);
    color: #881337;
    opacity: 0.85;
}
.choice.eliminated {
    opacity: 0.35;
    text-decoration: line-through;
    background: #f8fafc;
    border-color: #e2e8f0;
}
.choice:disabled { cursor: default; }

/* ---------- 피드백 상자 ---------- */
.feedback {
    border-radius: 18px; padding: 16px 18px; margin-top: 16px; border: 2px solid;
    animation: pop-in 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 12px rgba(43, 34, 28, 0.04);
}
.feedback.good { background: #f0fdf4; border-color: #86efac; color: #14532d; }
.feedback.bad { background: #fef2f2; border-color: #fca5a5; color: #7f1d1d; }
.feedback.info { background: #eff6ff; border-color: #bfdbfe; color: #1e3a8a; }
.feedback.gold { background: #fffbeb; border-color: #fde68a; color: #78350f; }
.feedback .fb-title { font-family: var(--font-title); font-size: 20px; font-weight: 700; margin-bottom: 6px; letter-spacing: -.02em; }
.fact {
    display: block; margin-top: 10px; padding: 12px 14px; border-radius: 14px;
    background: rgba(255, 255, 255, 0.85); border: 2px dashed #fcd34d; font-size: 16px;
    box-shadow: 0 2px 6px rgba(180, 83, 9, 0.05);
}

@keyframes pop-in { from { transform: scale(0.96); opacity: 0; } to { transform: scale(1); opacity: 1; } }
@keyframes shake { 0%,100% { transform: translateX(0); } 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } }
.shake { animation: shake 0.3s; }

/* ---------- 퀘스트 진행 점 ---------- */
.steps { display: flex; gap: 8px; align-items: center; justify-content: center; margin: 6px 0 18px; flex-wrap: wrap; }
.step {
    display: flex; align-items: center; gap: 5px;
    font-size: 14px; font-weight: 600; padding: 5px 12px; border-radius: 999px;
    background: #ffffff; border: 2px solid var(--line); color: var(--muted);
    box-shadow: 0 1px 3px rgba(43, 34, 28, 0.04);
    transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.step.now {
    border-color: var(--accent); color: var(--accent-dark);
    background: var(--accent-soft); font-weight: 700;
    box-shadow: 0 2px 8px rgba(217, 72, 15, 0.18);
}
.step.done {
    border-color: #86efac; color: var(--good); background: var(--good-soft);
}
@media (max-width: 480px) { .step .step-name { display: none; } .step.now .step-name { display: inline; } }

.stage-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.stage-head .emoji { font-size: 36px; }
.stage-goal { font-size: 16px; color: var(--muted); }
.counter { font-size: 15px; font-weight: 600; color: var(--muted); white-space: nowrap; }

/* ---------- 읽어 주기 ---------- */
.speak-btn { background: var(--info-soft); color: var(--info); border: 2px solid #bfdbfe; border-radius: 12px; min-height: 40px; padding: 4px 12px; font-size: 15px; font-family: var(--font-title); font-weight: 600; transition: all 0.15s; }
.speak-btn:hover { background: #dbeafe; transform: translateY(-1px); }
.speak-btn.speaking { background: var(--info); color: #fff; }

/* ---------- 탐험 지도 ---------- */
.unit { margin-top: 28px; }
.unit-title { font-family: var(--font-title); font-size: 19px; font-weight: 700; color: var(--accent-dark); margin: 0 0 12px 6px; letter-spacing: -.02em; }
.path { position: relative; padding-left: 36px; }
.path::before { content: ''; position: absolute; left: 17px; top: 12px; bottom: 12px; border-left: 4px dashed #e2cfb2; }
.station {
    position: relative; display: flex; align-items: center; gap: 14px; width: 100%;
    background: var(--card); border: 2.5px solid var(--line); border-radius: 20px;
    padding: 16px 18px; margin-bottom: 14px; text-align: left; box-shadow: var(--shadow);
    transition: transform 0.15s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.15s, border-color 0.15s;
}
.station:hover:not(.locked) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: #fdba74;
}
.station::before {
    content: ''; position: absolute; left: -28px; top: 50%; width: 18px; height: 18px; margin-top: -9px;
    border-radius: 50%; background: var(--line); border: 3px solid var(--bg);
}
.station.open { border-color: #fb923c; background: linear-gradient(180deg, #ffffff 0%, #fffbf8 100%); }
.station.open::before { background: var(--accent); box-shadow: 0 0 0 3px rgba(217, 72, 15, 0.25); }
.station.done { border-color: #86efac; background: linear-gradient(180deg, #ffffff 0%, #f7fdf9 100%); }
.station.done::before { background: var(--good); }
.station.locked { opacity: 0.6; box-shadow: none; cursor: default; }
.station .emoji { font-size: 38px; flex-shrink: 0; width: 48px; text-align: center; }
.station .name { font-family: var(--font-title); font-size: 21px; font-weight: 700; letter-spacing: -.02em; }
.station .desc { font-size: 15px; color: var(--muted); margin-top: 2px; }
.station .state { margin-left: auto; font-size: 15px; font-weight: 600; white-space: nowrap; }
.station .bar { height: 9px; border-radius: 99px; background: #f3e8d6; margin-top: 8px; overflow: hidden; }
.station .bar > i { display: block; height: 100%; background: linear-gradient(90deg, #f97316, var(--accent)); border-radius: 99px; }
/* 단원 마무리·더 탐험하기 활동 버튼 */
.unit-extras { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 0 36px; }
.extra-btn {
    display: inline-flex; align-items: center; gap: 8px; min-height: 48px; padding: 8px 16px;
    background: #fff; border: 2.5px solid var(--line); border-radius: 16px;
    font-family: var(--font-title); font-size: 17px; font-weight: 600; color: inherit;
    cursor: pointer; box-shadow: var(--shadow-sm);
    transition: transform 0.12s, box-shadow 0.15s, border-color 0.15s;
}
.extra-btn:hover:not(.locked) {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: #fb923c;
}
.extra-btn .emoji { font-size: 22px; }
.extra-btn .st { font-size: 14px; margin-left: 2px; }
.extra-btn.open { border-color: #fdba74; }
.extra-btn.done { border-color: #86efac; }
.extra-btn.locked { opacity: 0.6; cursor: default; }
/* 위험한 버튼 (기록 지우기) */
.danger-link { color: var(--bad, #b91c1c); border-color: #fecaca; }
/* 노트 진도 요약 */
.progress-summary { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 6px; margin: 4px 0 12px; }
.ps-item { display: flex; align-items: center; gap: 6px; background: #fff; border: 2px solid var(--line); border-radius: 12px; padding: 6px 10px; font-size: 15px; }
.ps-item .ps-label { flex: 1; color: var(--muted); }
/* 교실 화면용 QR */
.qr-big { display: block; width: min(70vw, 60vh, 420px); height: auto; margin: 12px auto; background: #fff; border-radius: 12px; }
.qr-url { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 18px; word-break: break-all; }
/* 역사 신문 · 편지 */
.writing-options { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.writing-opt {
    display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: 14px;
    align-items: center; text-align: left; padding: 16px; background: #fff;
    border: 2.5px solid var(--line); border-radius: 18px; color: inherit; cursor: pointer; min-height: 84px;
    box-shadow: var(--shadow-sm); transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.writing-opt:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }
.writing-opt .wo-icon { grid-row: span 2; font-size: 34px; }
.writing-opt .wo-kind { color: var(--muted); font-size: 14px; }
.writing-opt .wo-title { font-family: var(--font-title); font-size: 18px; font-weight: 700; }
.newspaper { background: #fffdf7; border: 2px solid #3f3a33; border-radius: 12px; padding: 18px 20px; font-family: 'Noto Serif KR', Georgia, serif; box-shadow: var(--shadow-sm); }
.newspaper .np-mast { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 4px double #3f3a33; padding-bottom: 6px; font-weight: 800; font-size: 20px; letter-spacing: 2px; }
.newspaper .np-head { font-size: 24px; margin: 12px 0 4px; line-height: 1.35; }
.newspaper .np-by { color: var(--muted); border-bottom: 1px solid #d6d3cd; padding-bottom: 8px; margin-bottom: 8px; font-size: 14px; }
.newspaper p { line-height: 1.8; margin: 6px 0; text-indent: 0.6em; }
.letter { background: repeating-linear-gradient(#fffdf5, #fffdf5 31px, #f1e6cf 32px); border: 2px solid #e9d8b4; border-radius: 12px; padding: 18px 20px; line-height: 32px; box-shadow: var(--shadow-sm); }
.letter p { margin: 0; }
.letter .lt-to { font-family: var(--font-title); font-size: 19px; font-weight: 700; margin-bottom: 4px; }
.letter .lt-from { text-align: right; margin-top: 8px; font-weight: 600; }
/* 문화유산 지도 */
.map-layout { display: grid; gap: 16px; margin-top: 16px; }
.map-layout > .card { margin-top: 0; }
.map-side > .card + .card { margin-top: 16px; }
@media (min-width: 760px) { .map-layout { grid-template-columns: 1.1fr 1fr; align-items: start; } }
.heritage-map { background: #dbeafe; border-radius: 18px; overflow: hidden; border: 2.5px solid var(--line); }
.heritage-map svg { display: block; width: 100%; height: auto; max-height: 75vh; margin: 0 auto; }
.heritage-map .land { fill: #fef3c7; stroke: #b45309; stroke-width: 3; stroke-linejoin: round; }
.heritage-map .dmz { fill: none; stroke: #dc2626; stroke-width: 3; stroke-dasharray: 8 6; }
.heritage-map .pin { cursor: pointer; }
.heritage-map .pin .hit { fill: transparent; }
.heritage-map .pin .dot { fill: var(--accent); stroke: #fff; stroke-width: 4; transition: r 0.15s; }
.heritage-map .pin.visited .dot { fill: var(--good); }
.heritage-map .pin.locked .dot { fill: #cbd5e1; r: 8; }
.heritage-map .pin.selected .dot { fill: #1d4ed8; r: 15; stroke: #fff; }
.map-legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 10px; color: var(--muted); }
.map-legend .lg { display: inline-block; width: 12px; height: 12px; border-radius: 50%; margin-right: 5px; vertical-align: -1px; }
.map-legend .lg.open { background: var(--accent); }
.map-legend .lg.visited { background: var(--good); }
.map-legend .lg.locked { background: #cbd5e1; }
.map-legend .lg.dmz { border-radius: 0; height: 0; border-top: 3px dashed #dc2626; vertical-align: 3px; }
.place-list { display: flex; flex-wrap: wrap; gap: 6px; }
.place-chip { min-height: 40px; padding: 6px 14px; background: #fff; border: 2px solid var(--line); border-radius: 999px; font-size: 15px; font-weight: 600; color: inherit; cursor: pointer; transition: all 0.15s; }
.place-chip:hover:not(.locked) { border-color: var(--accent); transform: translateY(-1px); }
.place-chip.visited { border-color: #86efac; background: var(--good-soft); }
.place-chip.selected { border-color: #1d4ed8; background: #eff6ff; font-weight: 700; }
.place-chip.locked { opacity: 0.55; }
.note-line.locked-line { color: var(--muted); border-left-color: #cbd5e1; }
/* 인물 도감 */
.people-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 12px; }
.person-card {
    display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 14px 10px;
    background: #fff; border: 2.5px solid var(--line); border-radius: 18px; color: inherit; cursor: pointer; min-height: 130px;
    box-shadow: var(--shadow-sm); transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.person-card:hover:not(.locked) { transform: translateY(-3px); box-shadow: var(--shadow); border-color: #fdba74; }
.person-card .pc-emoji { font-size: 40px; line-height: 1.2; }
.person-card .pc-name { font-family: var(--font-title); font-size: 18px; font-weight: 700; }
.person-card .pc-station { font-size: 13px; color: var(--muted); text-align: center; }
.person-card.collected { border-color: #fcd34d; background: #fffbeb; }
.person-card.open { border-color: #fdba74; border-style: dashed; }
.person-card.locked { opacity: 0.55; cursor: default; }
.person-portrait { width: 110px; height: 110px; margin: 10px auto; border-radius: 50%; background: #f7efe2; border: 4px dashed #e2cfb2; display: flex; align-items: center; justify-content: center; font-size: 56px; }
.person-portrait.revealed { border-style: solid; border-color: #fcd34d; background: #fffbeb; animation: pop-in 0.3s; }
.speech { position: relative; background: #fff; border: 2.5px solid var(--line); border-radius: 18px; padding: 14px 18px; margin-top: 14px; box-shadow: var(--shadow-sm); }
.speech::before { content: ''; position: absolute; top: -12px; left: 50%; margin-left: -10px; border: 10px solid transparent; border-top: 0; border-bottom-color: var(--line); }
.speech p { margin: 4px 0; font-size: 18px; }
.speech p + p { border-top: 1px dashed var(--line); padding-top: 6px; }
/* 복습 상자 */
.review-card { border-color: #93c5fd; background: #eff6ff; }
/* 연표 잇기 */
.tl-strip { list-style: none; margin: 12px 0 0; padding: 0 0 0 18px; border-left: 4px solid var(--accent); }
.tl-strip:empty::before { content: '여기에 연표가 만들어져요'; display: block; color: var(--muted); padding: 8px 0; }
.tl-item { position: relative; background: #fff; border: 2px solid var(--line); border-radius: 14px; padding: 10px 14px; margin: 10px 0; animation: pop-in 0.25s; box-shadow: var(--shadow-sm); }
.tl-item::before { content: ''; position: absolute; left: -29px; top: 16px; width: 14px; height: 14px; border-radius: 50%; background: var(--accent); border: 3px solid #fff; }
.tl-year { display: block; font-size: 14px; font-weight: 700; color: var(--accent-dark); }
.tl-text { display: block; }
.tl-pool { display: grid; gap: 10px; }
.tl-card {
    text-align: left; min-height: 52px; padding: 12px 16px; background: #fffaf2;
    border: 2.5px dashed #e2cfb2; border-radius: 16px; font-size: 17px; color: inherit; cursor: pointer;
    box-shadow: var(--shadow-sm); transition: all 0.15s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.tl-card:hover { border-color: var(--accent); border-style: solid; transform: translateY(-2px); box-shadow: var(--shadow); }

/* ---------- 유물 탐정 ---------- */
.artifact-frame {
    position: relative; width: 100%; max-width: 360px; aspect-ratio: 1 / 1; margin: 0 auto;
    border-radius: 18px; overflow: hidden; background: #f7efe2; border: 3px solid var(--line);
}
.artifact-frame svg, .artifact-frame img { width: 100%; height: 100%; display: block; object-fit: contain; }
.tiles { position: absolute; top: 0; right: 0; bottom: 0; left: 0; display: grid; grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(3, 1fr); }
.tile {
    background: #b08968; border: 2px solid #9c7456;
    display: flex; align-items: center; justify-content: center; font-size: 26px; color: rgba(255,255,255,0.55);
    transition: opacity 0.5s, transform 0.5s;
}
.tile.off { opacity: 0; transform: scale(0.6); }
.clues { list-style: none; padding: 0; margin: 12px 0 0; }
.clues li { background: var(--gold-soft); border-radius: 12px; padding: 8px 12px; margin-top: 8px; animation: pop-in 0.25s; }
.clues li::before { content: '🔎 '; }

/* ---------- 이야기 카드 ---------- */
.story-art { font-size: 64px; text-align: center; line-height: 1.2; margin-bottom: 8px; }
.story-art svg, .story-art img { width: 180px; height: 180px; }
.story-art img, .scene-art img { object-fit: contain; border-radius: 12px; background: #f7efe2; }
.photo-credit { font-size: 12px; color: var(--muted); text-align: right; margin-top: 4px; line-height: 1.3; }
.story-art + .photo-credit { text-align: center; }
.story-text p { font-size: 19px; line-height: 1.75; white-space: pre-line; }
.story-text b, .kw { background: linear-gradient(transparent 55%, #fde68a 55%); font-weight: bold; }

/* ---------- 생활 체험 ---------- */
.scene { font-size: 19px; line-height: 1.75; }
.scene-art { font-size: 56px; text-align: center; line-height: 1.2; }
.scene-art svg, .scene-art img { width: 150px; height: 150px; }
.learned { list-style: none; padding: 0; margin: 0; }
.learned li { padding: 10px 12px; border-radius: 12px; background: var(--good-soft); margin-top: 8px; }
.learned li::before { content: '✅ '; }

/* ---------- 분류 문제 ---------- */
.sort-item { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 10px 12px; border: 2px solid var(--line); border-radius: 14px; margin-top: 8px; background: #fff; }
.sort-item .label { flex: 1; min-width: 150px; }
.seg { display: inline-flex; border: 2px solid var(--line); border-radius: 12px; overflow: hidden; }
.seg button { border: none; background: #fff; padding: 8px 14px; min-height: 44px; font-size: 16px; }
.seg button + button { border-left: 2px solid var(--line); }
.seg button.on { background: var(--accent); color: #fff; }
.sort-item.correct { border-color: var(--good); background: var(--good-soft); }
.sort-item.wrong { border-color: var(--bad); background: var(--bad-soft); }

/* ---------- 한 줄 정리 ---------- */
.frame-sentence { font-size: 20px; line-height: 2.2; }
.blank {
    display: inline-block; min-width: 180px; max-width: 100%; width: 14em;
    border: none; border-bottom: 3.5px solid var(--accent); background: var(--accent-soft);
    border-radius: 10px 10px 0 0; padding: 4px 10px; font-size: 19px; line-height: 1.5;
    outline: none; transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.blank:focus {
    background: #ffffff;
    box-shadow: 0 4px 12px rgba(217, 72, 15, 0.15);
}
.blank.ok { border-bottom-color: var(--good); background: var(--good-soft); }
.blank-hint { display: block; font-size: 15px; color: var(--bad); line-height: 1.4; margin-top: 4px; }
.blank-hint.ok { color: var(--good); }
.word-bank { display: flex; flex-wrap: wrap; gap: 8px; }
.word-bank button {
    background: #fff; border: 2px dashed #fdba74; border-radius: 12px; padding: 6px 14px;
    font-size: 16px; min-height: 42px; cursor: pointer; box-shadow: var(--shadow-sm);
    transition: all 0.15s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.word-bank button:hover {
    background: #fffaf2; border-color: var(--accent); border-style: solid;
    transform: translateY(-2px); box-shadow: var(--shadow);
}
.word-bank button:active { background: var(--accent-soft); transform: translateY(0); }

/* ---------- 도장·결과 ---------- */
.stamp {
    width: 140px; height: 140px; margin: 10px auto; border-radius: 50%;
    border: 6px double var(--bad); color: var(--bad);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    font-family: var(--font-title); font-size: 20px; line-height: 1.2; text-align: center;
    transform: rotate(-12deg); animation: stamp-in 0.5s cubic-bezier(0.2, 1.6, 0.4, 1);
    background: rgba(254, 226, 226, 0.4);
}
.stamp .big { font-size: 40px; }
@keyframes stamp-in { from { transform: rotate(-12deg) scale(2.2); opacity: 0; } to { transform: rotate(-12deg) scale(1); opacity: 1; } }
.score-big { font-family: var(--font-title); font-size: 44px; color: var(--accent); }

/* ---------- 시작 화면 ---------- */
.hero { text-align: center; padding: 36px 0 12px; }
.hero .logo { font-size: 72px; line-height: 1; filter: drop-shadow(0 4px 10px rgba(0,0,0,0.08)); }
.hero h1 { font-size: 36px; margin-top: 8px; color: var(--accent-dark); }
/* 시작 화면 탭: 시작하기 / 사용법 */
.tabs {
    display: grid; grid-template-columns: 1fr 1fr; gap: 6px;
    background: #f4ecdf; border: 2px solid var(--line); border-radius: 18px;
    padding: 6px; margin: 8px 0 18px;
}
.tabs button {
    border: none; background: transparent; border-radius: 13px; min-height: 48px;
    font-family: var(--font-title); font-size: 18px; font-weight: 700; color: var(--muted);
    cursor: pointer; transition: all 0.15s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.tabs button.on {
    background: var(--accent); color: #fff;
    box-shadow: 0 3px 10px rgba(217, 72, 15, 0.3);
}
.help-card h2 { font-size: 21px; margin-bottom: 8px; }
.help-card p { line-height: 1.7; }
.help-list { margin: 0; padding-left: 1.4em; line-height: 1.7; }
.help-list li + li { margin-top: 4px; }
.help-card.teacher summary { font-family: var(--font-title); font-size: 19px; cursor: pointer; }
.help-card.teacher[open] summary { margin-bottom: 8px; }
.num-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(56px, 1fr)); gap: 8px; }
.num-grid button, .avatar-grid button {
    min-height: 56px; border-radius: 14px; border: 2.5px solid var(--line); background: #fff;
    font-size: 20px; font-family: var(--font-title); font-weight: 700; cursor: pointer;
    box-shadow: var(--shadow-sm); transition: transform 0.12s, border-color 0.15s, box-shadow 0.15s, background-color 0.15s;
}
.num-grid button:hover, .avatar-grid button:hover {
    transform: translateY(-2px); border-color: #fdba74; box-shadow: var(--shadow);
}
.num-grid button:active, .avatar-grid button:active {
    transform: translateY(0);
}
.num-grid button.on, .avatar-grid button.on {
    border-color: var(--accent); background: var(--accent-soft); color: var(--accent-dark);
    box-shadow: 0 0 0 2px rgba(217, 72, 15, 0.2);
}
.avatar-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; }
.avatar-grid button { font-size: 32px; min-height: 64px; min-width: 0; padding: 4px; }
.explorer-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; }
.explorer-list button {
    background: #fff; border: 2.5px solid var(--line); border-radius: 18px; padding: 12px;
    font-family: var(--font-title); font-size: 18px; cursor: pointer;
    box-shadow: var(--shadow-sm); transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.explorer-list button:hover {
    transform: translateY(-2px); border-color: var(--accent); box-shadow: var(--shadow);
}
.explorer-list .av { font-size: 34px; display: block; }
.explorer-list .small { display: block; font-family: inherit; }
.code-box { font-family: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace; font-size: 28px; letter-spacing: 3px; text-align: center; padding: 14px; background: #fff; border: 3px dashed var(--accent); border-radius: 16px; user-select: all; }
.name-input { width: 100%; font: inherit; font-size: 20px; padding: 12px 16px; border: 2.5px solid var(--line); border-radius: 16px; background: #fff; color: inherit; transition: border-color 0.15s, box-shadow 0.15s; }
.name-input:focus { outline: none; border-color: var(--accent, #c2410c); box-shadow: 0 0 0 4px rgba(217, 72, 15, 0.15); }
.chip-name { display: inline-block; max-width: 5.5em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
/* 아주 작은 휴대폰: 상단 막대 버튼이 두 줄로 꺾이지 않게 */
@media (max-width: 380px) {
    .avatar-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .topbar { gap: 6px; }
    .topbar > .btn { padding-left: 10px; padding-right: 10px; }
    .topbar .title { font-size: 17px; }
    .chip { padding: 4px 8px; }
    .chip-name { max-width: 3.5em; }
    .topbar .bgm-toggle { padding-left: 8px; padding-right: 8px; }
}
/* 320px 휴대폰: 배경음악 버튼까지 한 줄에 들어가게 이름표를 조금 더 줄임 */
@media (max-width: 340px) {
    .chip-name { max-width: 2.4em; }
}
.code-input { width: 100%; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 22px; letter-spacing: 2px; text-transform: uppercase; padding: 12px 16px; border: 2.5px solid var(--line); border-radius: 16px; text-align: center; transition: border-color 0.15s, box-shadow 0.15s; }
.code-input:focus { outline: none; border-color: var(--accent, #c2410c); box-shadow: 0 0 0 4px rgba(217, 72, 15, 0.15); }

/* ---------- 도감·노트 ---------- */
.dex { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 12px; }
.dex-item {
    background: #fff; border: 2.5px solid var(--line); border-radius: 18px; padding: 12px;
    text-align: center; box-shadow: var(--shadow-sm); transition: transform 0.15s, box-shadow 0.15s;
}
.dex-item:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.dex-item .art { width: 100%; aspect-ratio: 1/1; background: #f7efe2; border-radius: 14px; overflow: hidden; }
.dex-item .art svg, .dex-item .art img { width: 100%; height: 100%; display: block; }
.dex-item .art img { object-fit: contain; }
/* aspect-ratio 를 모르는 오래된 브라우저(iOS 14, 오래된 안드로이드 태블릿)에서도 그림이 납작해지지 않게 */
@supports not (aspect-ratio: 1 / 1) {
    .artifact-frame { width: min(360px, calc(100vw - 72px)); height: min(360px, calc(100vw - 72px)); }
    .dex-item .art { position: relative; height: 0; padding-bottom: 100%; }
    .dex-item .art > svg, .dex-item .art > img { position: absolute; top: 0; left: 0; }
}
.dex-item .nm { font-family: var(--font-title); font-size: 18px; font-weight: 700; margin-top: 8px; }
.dex-item.unknown .art { display: flex; align-items: center; justify-content: center; font-size: 40px; color: var(--muted); }
.note-line { background: #fff; border-left: 6px solid var(--accent); border-radius: 12px; padding: 12px 16px; margin-top: 10px; box-shadow: var(--shadow-sm); }

/* ---------- 모달 ---------- */
.modal-back {
    position: fixed; inset: 0; z-index: 50;
    background: rgba(43, 34, 28, 0.4); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
    display: flex; align-items: center; justify-content: center; padding: 16px;
}
.modal {
    background: var(--card); border-radius: 24px; padding: 24px; width: 100%; max-width: 480px; max-height: 90vh;
    overflow-y: auto; border: 2.5px solid var(--line);
    box-shadow: 0 20px 40px rgba(43, 34, 28, 0.2), 0 2px 6px rgba(43, 34, 28, 0.08);
    animation: pop-in 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 60; width: max-content; max-width: calc(100vw - 32px); background: var(--ink); color: #fff; padding: 10px 18px; border-radius: 999px; font-size: 16px; text-align: center; overflow-wrap: anywhere; animation: toast-in 0.2s; }
@keyframes toast-in { from { transform: translateX(-50%) scale(0.96); opacity: 0; } to { transform: translateX(-50%) scale(1); opacity: 1; } }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- 인쇄(나의 역사 노트) ---------- */
@media print {
    body { background: #fff; font-size: 14px; }
    .no-print, .topbar { display: none !important; }
    .card { box-shadow: none; break-inside: avoid; }
    .dex { grid-template-columns: repeat(4, 1fr); }
    .dex-item { break-inside: avoid; }
}

/* ---------- 차분한 모드: 아픈 역사를 다루는 퀘스트 ---------- */
body.calm {
    --bg: #f4f5f7;
    --bg-dot: #e3e6eb;
    --accent: #475569;
    --accent-dark: #334155;
    --accent-soft: #e2e8f0;
    --line: #d9dee5;
    --gold-soft: #f1f5f9;
}
body.calm .stamp {
    border-color: var(--accent);
    color: var(--accent);
    background: #f8fafc;
    animation: none;
    transform: none;
}
body.calm .shake { animation: none; }
body.calm .card-accent { border-color: #cbd5e1; }
body.calm .fact { border-color: #cbd5e1; }

/* 시작 화면 하단: 저작권·엽쌤 앱 모음 링크 (다른 앱들과 같은 문구) */
.site-foot { margin: 28px 0 8px; text-align: center; font-size: 13px; line-height: 1.6; color: var(--muted, #8a8580); }
.site-foot a { color: inherit; text-decoration: underline; text-underline-offset: 3px; white-space: nowrap; }