@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css');

:root {
  --c-bg: #ffffff;
  --c-ink: #1a1a1a;
  --c-ink-soft: #4a4a4a;
  --c-mute: #8a8a8a;
  --c-line: #e6e6e6;
  --c-line-soft: #f2f2f2;
  --c-accent: #00807a;
  --c-accent-dark: #006963;
  --c-accent-soft: #e6f4f3;
  --c-orig: #f7f7f5;
  --c-answer: #fff7e6;
  --c-answer-bd: #e8a93b;
  --c-verify: #f0f7ff;
  --c-verify-bd: #4a90d9;
  --c-warn: #fff0f0;
  --c-warn-bd: #d94a4a;
  --c-ok: #f0f9f0;
  --c-ok-bd: #4ab04a;
  --c-mark: #fff8e1;
  --c-mark-bd: #e8c14a;
}

* { box-sizing: border-box; }
/* HTML5 hidden 속성을 모든 요소에서 강제로 숨김 — display: grid/flex 등이 덮어쓰는 것 방지 */
[hidden] { display: none !important; }
body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Segoe UI', sans-serif;
  color: var(--c-ink);
  background: #fafafa;
  margin: 0;
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 920px; margin: 0 auto; padding: 48px 32px 80px; }

/* ───── 헤더 ───── */
.app-header { border-bottom: 2px solid var(--c-ink); padding-bottom: 24px; margin-bottom: 36px; }
.app-header .eyebrow { font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--c-accent); font-weight: 700; margin-bottom: 10px; }
.app-header h1 { font-size: 28px; font-weight: 800; letter-spacing: -0.02em; margin: 0 0 6px; }
.app-header .subtitle { color: var(--c-ink-soft); font-size: 15px; margin: 0; }

.view { display: none; }
.view.active { display: block; }

/* ───── 시작 화면 ───── */
.exam-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; margin: 0 0 28px; }
.exam-card {
  border: 2px solid var(--c-line);
  border-radius: 12px;
  padding: 18px 20px;
  cursor: pointer;
  transition: all 0.15s;
  background: #fff;
  user-select: none;
}
.exam-card:hover { border-color: var(--c-accent); transform: translateY(-1px); }
.exam-card.selected { border-color: var(--c-accent); background: var(--c-accent-soft); }
.exam-card h3 { margin: 0 0 4px; font-size: 16px; color: var(--c-ink); }
.exam-card .code { color: var(--c-accent); font-weight: 700; font-size: 13px; letter-spacing: 0.04em; }
.exam-card .meta { font-size: 12.5px; color: var(--c-mute); margin-top: 8px; line-height: 1.55; }
.exam-card .last { font-size: 11.5px; color: var(--c-accent-dark); margin-top: 6px; font-weight: 600; }

.options { background: #fff; border: 1px solid var(--c-line); border-radius: 12px; padding: 22px 26px; }
.options h2 { margin: 0 0 16px; font-size: 16px; color: var(--c-ink); }
.option-row { display: grid; grid-template-columns: 180px 1fr; align-items: center; gap: 14px; padding: 10px 0; border-bottom: 1px dashed var(--c-line-soft); }
.option-row:last-of-type { border-bottom: 0; }
.option-row label { font-size: 13.5px; color: var(--c-ink-soft); font-weight: 600; }
.option-row input[type="number"] {
  width: 100px; padding: 8px 10px; font-size: 14px;
  border: 1px solid var(--c-line); border-radius: 6px;
  font-family: inherit;
}
.option-row input[type="number"]:focus { outline: 2px solid var(--c-accent); border-color: transparent; }
.option-row .hint { font-size: 12px; color: var(--c-mute); margin-left: 8px; }
.option-row .check-wrap { display: flex; align-items: center; gap: 8px; }
.option-row .check-wrap label { font-weight: 400; color: var(--c-ink); }
.option-row input[type="checkbox"] { width: 18px; height: 18px; cursor: pointer; }

.btn {
  background: var(--c-accent); color: #fff; border: 0;
  padding: 12px 28px; border-radius: 8px;
  font-size: 14px; font-weight: 700; cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, transform 0.05s;
}
.btn:hover:not(:disabled) { background: var(--c-accent-dark); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { background: #ccc; cursor: not-allowed; }
.btn-ghost { background: transparent; color: var(--c-ink-soft); border: 1px solid var(--c-line); }
.btn-ghost:hover:not(:disabled) { background: var(--c-line-soft); color: var(--c-ink); }
.btn-danger { background: var(--c-warn-bd); }
.btn-danger:hover:not(:disabled) { background: #b03838; }

.actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 22px; }

.intro-tip {
  background: var(--c-accent-soft); border-left: 3px solid var(--c-accent);
  padding: 14px 18px; margin-bottom: 22px; border-radius: 0 6px 6px 0; font-size: 13.5px;
}
.intro-tip strong { color: var(--c-accent-dark); }

/* ───── 시험 화면 ───── */
.exam-shell { display: grid; grid-template-columns: 200px 1fr; gap: 24px; align-items: start; }
.exam-side {
  position: sticky; top: 16px;
  background: #fff; border: 1px solid var(--c-line); border-radius: 10px;
  padding: 14px 14px 16px;
  max-height: calc(100vh - 32px); overflow-y: auto;
}
.exam-side h4 { margin: 0 0 10px; font-size: 12px; letter-spacing: 0.06em; color: var(--c-mute); text-transform: uppercase; }
.q-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.q-grid button {
  aspect-ratio: 1; border: 1px solid var(--c-line);
  background: #fff; border-radius: 5px; cursor: pointer;
  font-size: 12px; font-weight: 600; color: var(--c-ink-soft);
  padding: 0; font-family: inherit;
  transition: all 0.1s;
}
.q-grid button:hover { border-color: var(--c-accent); }
.q-grid button.answered { background: var(--c-ok); border-color: var(--c-ok-bd); color: #1f5a1f; }
.q-grid button.marked { background: var(--c-mark); border-color: var(--c-mark-bd); color: #7a5800; }
.q-grid button.answered.marked { background: linear-gradient(135deg, var(--c-ok) 50%, var(--c-mark) 50%); }
.q-grid button.current { outline: 3px solid var(--c-accent); outline-offset: 1px; }
.exam-side .legend { font-size: 11px; color: var(--c-mute); margin-top: 12px; line-height: 1.5; }

.exam-topbar {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 14px; padding: 10px 14px;
  background: #fff; border: 1px solid var(--c-line); border-radius: 8px;
  font-size: 13.5px;
}
.exam-topbar .progress { font-weight: 700; color: var(--c-accent-dark); }
.exam-topbar .timer { font-family: 'SF Mono', Menlo, monospace; font-weight: 700; }
.exam-topbar .timer.urgent { color: var(--c-warn-bd); }

/* 언어 토글 (시험 화면 + 시작 옵션) */
.lang-toggle { display: inline-flex; background: var(--c-line-soft); border-radius: 6px; padding: 2px; gap: 2px; }
.lang-toggle button {
  background: transparent; border: 0; padding: 4px 10px; border-radius: 4px;
  font-size: 11.5px; font-weight: 600; cursor: pointer; color: var(--c-ink-soft);
  font-family: inherit; letter-spacing: 0.02em;
}
.lang-toggle button:hover:not(.active) { background: rgba(0,0,0,0.04); }
.lang-toggle button.active { background: var(--c-accent); color: #fff; }

.lang-radios { display: flex; gap: 14px; flex-wrap: wrap; }
.lang-radios label { display: inline-flex; align-items: center; gap: 6px; font-weight: 400; color: var(--c-ink); font-size: 13.5px; cursor: pointer; }
.lang-radios input[type="radio"] { cursor: pointer; }

/* 영문 표시 영역 (both 모드의 보조 영문) */
.en-block {
  margin-top: 8px; padding: 10px 14px;
  background: var(--c-orig); border-radius: 6px;
  font-size: 13px; line-height: 1.65; color: #2a2a2a;
}
.en-block .label-en { font-size: 10.5px; color: var(--c-mute); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 4px; }
ol.choices li .en-text {
  display: block; margin-top: 6px;
  font-size: 12.5px; color: var(--c-mute); line-height: 1.6;
  padding-left: 8px; border-left: 2px solid var(--c-line);
}

.q-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: 12px;
  padding: 28px 32px;
}
.q-card .q-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 14px; padding-bottom: 12px; border-bottom: 1px dashed var(--c-line); flex-wrap: wrap; }
.q-card .q-num { font-size: 24px; font-weight: 800; color: var(--c-accent); line-height: 1; }
.q-card .q-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.q-card .tag { font-size: 11px; font-weight: 600; padding: 3px 9px; border-radius: 999px; background: var(--c-line-soft); color: var(--c-ink-soft); }
.q-card .mark-btn {
  margin-left: auto; background: transparent; border: 1px solid var(--c-line);
  padding: 5px 12px; border-radius: 6px; font-size: 12px; cursor: pointer; font-family: inherit;
}
.q-card .mark-btn.on { background: var(--c-mark); border-color: var(--c-mark-bd); color: #7a5800; }

.section-label { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-mute); margin-bottom: 8px; }
.scenario { font-size: 14.5px; line-height: 1.8; margin-bottom: 6px; }
.scenario p { margin: 6px 0; }
.context-box { background: var(--c-line-soft); border-radius: 6px; padding: 12px 16px; margin: 12px 0; font-size: 13.5px; line-height: 1.7; }
.context-box ul { margin: 4px 0 0; padding-left: 18px; }
.context-box .label { font-weight: 700; color: var(--c-accent); margin-bottom: 4px; font-size: 12px; letter-spacing: 0.05em; }

.question-text { font-weight: 600; margin: 16px 0 12px; line-height: 1.7; }

ol.choices { list-style: none; padding: 0; margin: 0; }
ol.choices li {
  border: 1px solid var(--c-line); border-radius: 8px;
  padding: 12px 14px 12px 48px; margin-bottom: 8px;
  position: relative; font-size: 14px; line-height: 1.7;
  cursor: pointer; user-select: none;
  transition: all 0.1s;
}
ol.choices li::before {
  content: attr(data-letter);
  position: absolute; left: 14px; top: 12px;
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--c-line); color: var(--c-ink-soft);
  font-weight: 700; font-size: 12px;
  display: flex; align-items: center; justify-content: center;
}
ol.choices li:hover { border-color: var(--c-accent); }
ol.choices li.picked { border-color: var(--c-accent); background: var(--c-accent-soft); }
ol.choices li.picked::before { background: var(--c-accent); color: #fff; }
/* 즉시 채점 모드 — 클릭 후 정답·오답 표시 */
ol.choices li.correct { border-color: var(--c-ok-bd); background: var(--c-ok); }
ol.choices li.correct::before { background: var(--c-ok-bd); color: #fff; }
ol.choices li.wrong { border-color: var(--c-warn-bd); background: var(--c-warn); }
ol.choices li.wrong::before { background: var(--c-warn-bd); color: #fff; }

.multi-hint {
  font-size: 12px; color: var(--c-mute); margin: 0 0 8px;
  background: #fff8e6; padding: 6px 12px; border-radius: 6px;
  display: inline-block; border: 1px solid #f4d77a;
}

/* 문항 이미지 (시나리오 다음, 선택지 앞) */
.q-images {
  margin: 14px 0 18px;
  display: flex; flex-direction: column; gap: 12px; align-items: stretch;
}
.q-images a {
  display: block; text-decoration: none;
  border: 1px solid var(--c-line); border-radius: 8px;
  overflow: hidden; background: #fafafa;
  transition: border-color 0.15s, transform 0.05s;
}
.q-images a:hover { border-color: var(--c-accent); }
.q-images a:active { transform: scale(0.998); }
.q-images img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
}
.q-images a::after {
  content: "🔍 클릭하면 원본 크기로 새 창에서 열림";
  display: block;
  font-size: 11.5px; color: var(--c-mute);
  text-align: center; padding: 6px 0 8px;
  border-top: 1px dashed var(--c-line);
}

/* 즉시 채점 결과 박스 */
.reveal-inline {
  margin-top: 18px; padding-top: 14px; border-top: 1px dashed var(--c-line);
  display: none;
}
.reveal-inline.show { display: block; }
.reveal-inline .answer-box {
  background: var(--c-answer); border-left: 4px solid var(--c-answer-bd);
  padding: 12px 16px; border-radius: 0 6px 6px 0; margin-bottom: 10px;
  font-size: 13.5px;
}
.reveal-inline .verify {
  background: var(--c-verify); border-left: 4px solid var(--c-verify-bd);
  padding: 12px 16px; border-radius: 0 6px 6px 0; font-size: 13.5px;
}
.reveal-inline .verify h4 { margin: 0 0 6px; font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: #2a5a96; }

.q-nav { display: flex; gap: 8px; justify-content: space-between; margin-top: 18px; align-items: center; }
.q-nav .left, .q-nav .right { display: flex; gap: 8px; }

/* ───── 결과 화면 ───── */
.score-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: 14px;
  padding: 28px 32px; margin-bottom: 22px;
  display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: center;
}
.score-number {
  font-size: 64px; font-weight: 800; line-height: 1;
  letter-spacing: -0.03em; color: var(--c-accent-dark);
}
.score-number .pct { font-size: 28px; color: var(--c-mute); margin-left: 4px; font-weight: 600; }
.score-meta { font-size: 13.5px; color: var(--c-ink-soft); }
.score-meta .row { margin: 4px 0; }
.score-meta .row strong { color: var(--c-ink); margin-right: 6px; }
.pass-badge {
  display: inline-block; padding: 6px 16px; border-radius: 999px;
  font-size: 13px; font-weight: 800; letter-spacing: 0.04em;
  margin-bottom: 10px;
}
.pass-badge.pass { background: var(--c-ok); color: #1f5a1f; border: 1px solid var(--c-ok-bd); }
.pass-badge.fail { background: var(--c-warn); color: #a83232; border: 1px solid var(--c-warn-bd); }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; margin-bottom: 22px; }
.stat-grid .stat {
  background: #fff; border: 1px solid var(--c-line); border-radius: 10px;
  padding: 14px 16px;
}
.stat .num { font-size: 22px; font-weight: 800; }
.stat .label { font-size: 11.5px; color: var(--c-mute); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 4px; }
.stat.correct .num { color: #1f5a1f; }
.stat.wrong .num { color: #a83232; }
.stat.skip .num { color: var(--c-mute); }

.tag-stats {
  background: #fff; border: 1px solid var(--c-line); border-radius: 10px;
  padding: 16px 20px; margin-bottom: 22px;
}
.tag-stats h3 { margin: 0 0 10px; font-size: 14px; }
.tag-row { display: flex; align-items: center; gap: 10px; padding: 4px 0; font-size: 13px; }
.tag-row .name { flex: 0 0 200px; }
.tag-row .bar { flex: 1; height: 8px; background: var(--c-line-soft); border-radius: 4px; overflow: hidden; }
.tag-row .bar > div { height: 100%; background: var(--c-accent); transition: width 0.4s; }
.tag-row .pct-text { flex: 0 0 70px; text-align: right; color: var(--c-ink-soft); font-weight: 600; font-family: 'SF Mono', Menlo, monospace; font-size: 12px; }

.review-list { display: flex; flex-direction: column; gap: 10px; }
.review-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: 10px;
  overflow: hidden;
}
.review-card summary {
  cursor: pointer; list-style: none;
  padding: 12px 16px; display: flex; align-items: center; gap: 10px;
  font-size: 13.5px; user-select: none;
  background: #fafafa;
}
.review-card summary::-webkit-details-marker { display: none; }
.review-card summary::before {
  content: "▸"; color: var(--c-mute);
  display: inline-block; transition: transform 0.18s;
}
.review-card[open] summary::before { transform: rotate(90deg); }
.review-card .badge {
  font-size: 11px; font-weight: 700; padding: 2px 9px; border-radius: 999px;
  letter-spacing: 0.04em;
}
.review-card .badge.wrong { background: var(--c-warn); color: #a83232; border: 1px solid var(--c-warn-bd); }
.review-card .badge.skip { background: var(--c-line-soft); color: var(--c-ink-soft); }
.review-card .badge.correct { background: var(--c-ok); color: #1f5a1f; border: 1px solid var(--c-ok-bd); }
.review-card .body { padding: 16px 20px; border-top: 1px solid var(--c-line); }

/* 결과 화면의 카드 안 동일 스타일 (시험 화면과 일관) */
.review-card .body ol.choices li { cursor: default; }

/* ───── 응시 이력 카드 ───── */
.history-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: 8px;
  padding: 10px 14px; margin-bottom: 6px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; gap: 10px;
  transition: all 0.12s;
}
.history-card.clickable { cursor: pointer; }
.history-card.clickable:hover { border-color: var(--c-accent); background: var(--c-accent-soft); transform: translateX(2px); }
.history-card .hist-main { flex: 1; min-width: 0; }
.history-card .hist-link {
  display: inline-block; margin-left: 10px; font-size: 11.5px;
  color: var(--c-accent); font-weight: 700; letter-spacing: 0.02em;
  opacity: 0; transition: opacity 0.15s;
}
.history-card.clickable:hover .hist-link { opacity: 1; }
.history-card .hist-link.disabled { color: var(--c-mute); opacity: 1; font-weight: 400; }
.history-card .hist-right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.history-card .hist-del-btn {
  background: transparent; border: 1px solid var(--c-line); border-radius: 6px;
  padding: 4px 8px; cursor: pointer; font-size: 13px;
  color: var(--c-ink-soft); font-family: inherit;
  transition: all 0.1s;
}
.history-card .hist-del-btn:hover { background: var(--c-warn); border-color: var(--c-warn-bd); color: #a83232; }

/* ───── 맨 위로 버튼 ───── */
.to-top-btn {
  position: fixed; right: 24px; bottom: 24px;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--c-accent); color: #fff; border: 0;
  font-size: 20px; font-weight: 700; cursor: pointer;
  box-shadow: 0 4px 14px rgba(0,0,0,0.18);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: translateY(8px) scale(0.92); pointer-events: none;
  transition: opacity 0.2s, transform 0.2s, background 0.15s;
  z-index: 50;
  font-family: inherit;
}
.to-top-btn.show { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.to-top-btn:hover { background: var(--c-accent-dark); }
.to-top-btn:active { transform: translateY(0) scale(0.96); }
@media (max-width: 760px) {
  .to-top-btn { right: 14px; bottom: 14px; width: 40px; height: 40px; font-size: 18px; }
}

/* ───── 푸터 ───── */
.app-footer { margin-top: 48px; padding-top: 18px; border-top: 1px solid var(--c-line); font-size: 12px; color: var(--c-mute); text-align: center; line-height: 1.6; }
.app-footer a { color: var(--c-accent); text-decoration: none; }
.app-footer a:hover { text-decoration: underline; }

/* ───── 반응형 ───── */
@media (max-width: 760px) {
  .container { padding: 24px 16px 64px; }
  .exam-shell { grid-template-columns: 1fr; }
  .exam-side { position: static; max-height: none; }
  .q-grid { grid-template-columns: repeat(8, 1fr); }
  .score-card { grid-template-columns: 1fr; gap: 14px; }
  .option-row { grid-template-columns: 1fr; gap: 6px; }
  .option-row label { font-size: 13px; }
  .q-card { padding: 20px 18px; }
  .tag-row .name { flex: 0 0 120px; font-size: 12px; }
}