/* ─── 기본 리셋 & 변수 ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f5f5f7;
  --surface: #ffffff;
  --border: #d2d2d7;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --pass: #34c759;
  --fail: #ff3b30;
  --warn: #ff9f0a;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 18px;
  line-height: 1.6;
}

/* ─── 헤더 ─── */
header {
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0 24px;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  height: 52px;
}

.header-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
}

.header-badge {
  font-size: 12px;
  color: var(--text-secondary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 8px;
}

/* ─── 탭 네비게이션 ─── */
.tab-nav {
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  overflow-x: auto;
  scrollbar-width: none;
}
.tab-nav::-webkit-scrollbar { display: none; }

.tab-nav-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  gap: 0;
}

.tab-btn {
  background: none;
  border: none;
  padding: 14px 20px;
  font-size: 16px;
  font-family: var(--font);
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  position: relative;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 500;
}

/* ─── 메인 컨텐츠 ─── */
main {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 24px;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ─── 카드 ─── */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 28px;
  margin-bottom: 18px;
}

.card-title {
  font-size: 21px;
  font-weight: 600;
  margin-bottom: 8px;
}

.card-desc {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 20px;
}

/* ─── 공통 UI ─── */
.section-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 24px;
}

/* 버튼 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 22px;
  border-radius: 8px;
  border: none;
  font-size: 16px;
  font-family: var(--font);
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.15s, background 0.15s;
}
.btn:active { opacity: 0.8; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: #e8e8ed; }

.btn-danger { background: var(--fail); color: #fff; }
.btn-danger:hover { background: #e0302a; }

/* PDF 버튼 그리드 */
.pdf-btn-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 4px;
}
.pdf-btn-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.pdf-btn-icon { font-size: 28px; }
.pdf-btn-title { font-size: 15px; font-weight: 600; }
.pdf-btn-desc { font-size: 12px; color: var(--text-secondary); line-height: 1.5; flex: 1; }

/* 입력 */
textarea, input[type="text"] {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  font-family: var(--font);
  font-size: 16px;
  color: var(--text);
  background: var(--surface);
  resize: vertical;
  transition: border-color 0.15s;
}
textarea:focus, input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.12);
}

/* ─── 문제 세트 상태 바 ─── */
.status-bar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  font-size: 13px;
}

.status-label { color: var(--text-secondary); }
.status-value { font-weight: 600; }
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border);
}
.status-dot.loaded { background: var(--pass); }

/* ─── 기능 미구현 플레이스홀더 ─── */
.placeholder {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-secondary);
}
.placeholder-icon {
  font-size: 40px;
  margin-bottom: 12px;
}
.placeholder-text {
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text);
}
.placeholder-sub {
  font-size: 13px;
}

/* ─── 서브탭 (세그먼트 컨트롤) ─── */
.subtab-nav {
  display: inline-flex;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
  margin-bottom: 28px;
}

.subtab-btn {
  background: none;
  border: none;
  padding: 9px 18px;
  font-size: 15px;
  font-family: var(--font);
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 8px;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}
.subtab-btn:hover { color: var(--text); }
.subtab-btn.active {
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

.subtab-panel { display: none; }
.subtab-panel.active { display: block; }

/* ─── 반응형 ─── */
@media (max-width: 600px) {
  main { padding: 20px 16px; }
  .header-inner { padding: 0; }
  .tab-btn { padding: 10px 12px; font-size: 13px; }
  .card { padding: 16px; }
  .pdf-btn-grid { grid-template-columns: 1fr; }
}

/* ─── 마스터 카드 ─── */
.master-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}
.master-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.q-type-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.q-type-badge.essay {
  background: #fff3e0;
  border-color: #ffb74d;
  color: #e65100;
}
.q-type-badge.short {
  background: #e3f2fd;
  border-color: #64b5f6;
  color: #0d47a1;
}
.star-btn {
  margin-left: auto;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  opacity: 0.4;
  transition: opacity 0.15s;
  line-height: 1;
}
.star-btn.on { opacity: 1; }
.master-card .question-text {
  font-size: 17px;
  font-weight: 500;
  margin-bottom: 8px;
  line-height: 1.6;
}
.answer-toggle-btn {
  font-size: 12px;
  color: var(--accent);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.answer-body {
  display: none;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.answer-body.open { display: block; }
.answer-text {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text);
  margin-bottom: 10px;
}
.keyword-chip {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 12px;
  background: #e8f5e9;
  border: 1px solid #a5d6a7;
  color: #1b5e20;
  margin: 2px;
}
.outline-list {
  margin-top: 8px;
  padding-left: 18px;
  font-size: 13px;
  color: var(--text-secondary);
}
.outline-list li { margin-bottom: 4px; }

.chunks-section {
  margin-top: 12px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}
.chunks-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}
.chunks-list {
  padding-left: 18px;
  font-size: 13px;
  color: var(--text);
  line-height: 1.7;
}
.chunks-list li {
  margin-bottom: 4px;
  padding: 3px 0;
}

/* ─── 답안 연습 ─── */
.practice-progress {
  margin-bottom: 16px;
}
.progress-bar-wrap {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 6px;
}
.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.3s;
}
.progress-label {
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
}
.practice-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.practice-nav input[type="number"] {
  width: 60px;
  text-align: center;
  padding: 6px 8px;
}
.question-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.question-card .q-number {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.question-card .q-text {
  font-size: 19px;
  font-weight: 500;
  line-height: 1.6;
}
.result-box {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-top: 16px;
  display: none;
}
.result-box.visible { display: block; }
.result-box.pass { border-color: var(--pass); }
.result-box.fail { border-color: var(--fail); }
.result-score {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.result-score.pass { color: var(--pass); }
.result-score.fail { color: var(--fail); }
.miss-chip {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 12px;
  background: #ffeaea;
  border: 1px solid #ffb3b3;
  color: #c62828;
  margin: 2px;
}
.model-answer {
  margin-top: 12px;
  padding: 12px;
  background: var(--bg);
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.7;
}
.practice-actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
  flex-wrap: wrap;
}
.wrong-only-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 16px;
}

/* ─── 필터 바 ─── */
.filter-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.filter-btn:hover { background: var(--bg); }
.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ─── 타자 암기 ─── */

/* 전체 진행률 바 */
.typing-overall-bar {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin-bottom: 6px;
  overflow: hidden;
}
.typing-overall-fill {
  height: 100%;
  background: var(--pass);
  border-radius: 2px;
  transition: width 0.4s ease;
  width: 0%;
}
.typing-overall-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

/* 청크 목록 */
.typing-chunks-display {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 16px;
  line-height: 2.1;
  height: 230px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.typing-chunk {
  font-size: 19px;
  padding: 7px 0;
  border-bottom: 1px solid transparent;
  transition: opacity 0.2s;
}

/* 완료 청크: 색상 표시 */
.typing-chunk.done {
  opacity: 0.65;
  color: var(--accent);
}
.chunk-check {
  color: var(--pass);
  margin-right: 6px;
  font-size: 12px;
}

/* 현재 활성 청크 */
.typing-chunk.active {
  font-weight: 500;
  padding: 8px 12px;
  margin: 4px -12px;
  background: rgba(0, 113, 227, 0.04);
  border-radius: 8px;
  border-left: 3px solid var(--accent);
}

/* 미래 청크: 연하게 */
.typing-chunk.future {
  opacity: 0.45;
  color: var(--text-secondary);
}

/* 글자별 색상 */
.tc-correct { color: var(--text); }
.tc-wrong   { color: var(--fail); background: rgba(255,59,48,.12); border-radius: 2px; }
.tc-pending { color: #c0c0c8; }

/* 입력창 + 글자수 */
.typing-input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.typing-input-wrap input[type="text"] {
  flex: 1;
  font-size: 15px;
  padding: 12px 16px;
  border-radius: 10px;
  border: 2px solid var(--border);
  background: var(--surface);
  font-family: var(--font);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.typing-input-wrap input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.12);
}
.typing-char-count {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
  min-width: 52px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* 통계 */
.typing-stats {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.typing-stats strong { color: var(--text); }

/* 완료 메시지 */
.typing-done-msg {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-top: 8px;
  animation: fadeIn 0.3s ease;
}
.typing-done-inner { text-align: center; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ─── 핵심어 게임 (행성 방어) ─── */
.game-shell {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.game-hud {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(9,20,36,0.95);
  color: #e7eefb;
  font-size: 13px;
  flex-wrap: wrap;
}
.game-hud-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: rgba(4,12,24,0.6);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  padding: 4px 10px;
  min-width: 52px;
}
.game-hud-stat span { font-size: 10px; color: #8fa6c8; line-height: 1.2; }
.game-hud-stat b    { font-size: 15px; color: #fff; }
.game-hud-q {
  flex: 1;
  font-size: 12px;
  color: #cfe0fa;
  line-height: 1.4;
  min-width: 0;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.game-progress-bar { height: 3px; background: rgba(255,255,255,0.1); }
.game-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #60a5fa, #22c55e);
  transition: width 0.3s;
}
.game-arena {
  position: relative;
  height: 420px;
  overflow: hidden;
  background: linear-gradient(180deg,#061a2f 0%,#051426 50%,#04101f 100%);
}
.game-arena.study-mode {
  background: linear-gradient(180deg,#b8e4ff 0%,#e0f3ff 55%,#f5fafe 100%);
}
.game-star {
  position: absolute;
  border-radius: 50%;
  background: #fff;
  pointer-events: none;
  animation: pgTwinkle var(--dur,3s) ease-in-out infinite var(--delay,0s);
}
.game-sun {
  position: absolute;
  top: 18px; right: 36px;
  font-size: 44px;
  display: none;
  animation: pgSunPulse 3s ease-in-out infinite;
  z-index: 1;
}
.game-arena.study-mode .game-sun { display: block; }
.game-earth {
  position: absolute;
  left: 50%; bottom: 6px;
  transform: translateX(-50%);
  font-size: 60px;
  z-index: 2;
  animation: pgEarthFloat 4.5s ease-in-out infinite;
  user-select: none;
}
.game-earth.hit { animation: pgEarthShake 420ms ease-out; }
.game-target {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: translateX(-50%);
  z-index: 3;
  pointer-events: none;
  user-select: none;
}
.game-target.destroying { animation: pgTargetPop 360ms ease-out forwards; }
.game-target-emoji { font-size: 38px; line-height: 1; filter: drop-shadow(0 3px 8px rgba(0,0,0,0.4)); }
.game-target-label {
  background: rgba(4,12,24,0.88);
  color: #eaf4ff;
  border: 1px solid rgba(120,200,255,0.45);
  border-radius: 999px;
  padding: 3px 11px;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  margin-top: 2px;
  box-shadow: 0 0 10px rgba(96,180,255,0.25);
}
.game-target.active .game-target-label {
  border-color: rgba(255,210,60,0.9);
  background: rgba(40,30,4,0.92);
  color: #ffe066;
  box-shadow: 0 0 14px rgba(255,210,60,0.5);
}
.game-arena.study-mode .game-target-label {
  background: rgba(255,255,255,0.92);
  color: var(--text);
  border-color: var(--border);
  box-shadow: var(--shadow);
}
.game-arena.study-mode .game-target.active .game-target-label {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0,113,227,0.07);
}
.game-feedback-toast {
  position: absolute;
  bottom: 100px; left: 50%;
  transform: translateX(-50%);
  background: rgba(6,16,30,0.92);
  color: #eaf4ff;
  padding: 6px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  border: 1px solid rgba(255,255,255,0.18);
  pointer-events: none;
  opacity: 0;
  z-index: 10;
  white-space: nowrap;
  transition: opacity 0.15s;
}
.game-feedback-toast.show { opacity: 1; }
.game-feedback-toast.good { color: #86efac; border-color: rgba(34,197,94,0.5); }
.game-feedback-toast.bad  { color: #fca5a5; border-color: rgba(239,68,68,0.5); }
.game-feedback-toast.mid  { color: #fcd34d; border-color: rgba(245,158,11,0.5); }
.game-cmdbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: rgba(9,20,36,0.92);
}
.game-cmdbar input[type="text"] {
  flex: 1;
  background: rgba(255,255,255,0.06);
  border: 1.5px solid rgba(96,180,255,0.4);
  border-radius: 999px;
  padding: 8px 16px;
  color: #eaf4ff;
  font-size: 15px;
  font-family: var(--font);
  outline: none;
  min-width: 0;
}
.game-cmdbar input[type="text"]:focus {
  border-color: rgba(120,210,255,0.85);
  box-shadow: 0 0 0 3px rgba(96,180,255,0.15);
}
.game-cmdbar.study-mode input[type="text"] {
  border-color: var(--accent);
  background: rgba(255,255,255,0.94);
  color: var(--text);
}
.game-lives { font-size: 15px; letter-spacing: 1px; }
.game-start-screen {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.game-speed-row { display: flex; gap: 8px; margin: 10px 0 14px; }
.game-speed-btn {
  flex: 1;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 10px 6px;
  font-size: 13px;
  font-family: var(--font);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.12s, background 0.12s;
  line-height: 1.3;
}
.game-speed-btn:hover { border-color: var(--accent); }
.game-speed-btn.active {
  border-color: var(--accent);
  background: rgba(0,113,227,0.07);
  font-weight: 600;
  color: var(--accent);
}
.game-study-toggle {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  background: var(--bg);
  border-radius: 10px;
  cursor: pointer;
  border: 1.5px solid var(--border);
  font-size: 14px;
  line-height: 1.5;
  transition: border-color 0.12s;
  user-select: none;
}
.game-study-toggle.active { border-color: var(--accent); background: rgba(0,113,227,0.04); }
.game-over-screen {
  text-align: center;
  padding: 40px 24px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  animation: fadeIn 0.3s ease;
}
.game-over-score { font-size: 52px; font-weight: 700; color: var(--accent); margin-bottom: 6px; }

@keyframes pgTwinkle   { 0%,100%{opacity:.1;transform:scale(1)} 50%{opacity:.8;transform:scale(1.4)} }
@keyframes pgEarthFloat{ 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(-8px)} }
@keyframes pgEarthShake{ 0%{transform:translateX(-50%)} 20%{transform:translateX(calc(-50% - 5px))} 40%{transform:translateX(calc(-50% + 4px))} 60%{transform:translateX(calc(-50% - 3px))} 100%{transform:translateX(-50%)} }
@keyframes pgTargetPop { 0%{transform:translateX(-50%) scale(1);opacity:1} 100%{transform:translateX(-50%) scale(1.6);opacity:0} }
@keyframes pgSunPulse  { 0%,100%{transform:scale(1)} 50%{transform:scale(1.07)} }

/* ─── 암기 모드 구름 ─── */
.game-cloud {
  position: absolute;
  font-size: 36px;
  opacity: 0.82;
  pointer-events: none;
  user-select: none;
  animation: pgCloudDrift var(--cdur, 22s) linear infinite var(--cdelay, 0s);
  filter: drop-shadow(0 3px 6px rgba(100,160,220,0.25));
}
@keyframes pgCloudDrift { from { transform: translateX(-90px); } to { transform: translateX(1100px); } }

/* ─── 오답노트 ─── */
.wn-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.wn-mode-toggle {
  display: flex;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
}
.wn-mode-btn {
  padding: 7px 14px;
  font-size: 13px;
  font-family: var(--font);
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--text-secondary);
  transition: background 0.12s, color 0.12s;
  white-space: nowrap;
}
.wn-mode-btn.active { background: var(--accent); color: #fff; font-weight: 600; }
.wn-filter-bar {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.wn-filter-btn {
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-family: var(--font);
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  color: var(--text-secondary);
  transition: border-color 0.12s, color 0.12s, background 0.12s;
}
.wn-filter-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0,113,227,0.06);
  font-weight: 600;
}
.wrong-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}
.wrong-card.memo-done {
  opacity: 0.55;
  border-style: dashed;
}
.wrong-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.wn-score-badge {
  margin-left: auto;
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
}
.wn-score-badge.pass { background: rgba(52,199,89,0.1); color: #1a7f32; }
.wn-score-badge.fail { background: rgba(255,59,48,0.08); color: var(--fail); }
.wn-score-badge.none { background: var(--bg); color: var(--text-secondary); }
.wn-wrong-pill {
  font-size: 11px;
  background: rgba(255,59,48,0.08);
  color: var(--fail);
  border-radius: 8px;
  padding: 2px 7px;
}
.wrong-card .q-text {
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 10px;
  font-weight: 500;
}
.wn-missed-kws {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 8px;
}
.miss-chip {
  background: rgba(255,59,48,0.08);
  color: var(--fail);
  border: 1px solid rgba(255,59,48,0.2);
  border-radius: 999px;
  padding: 2px 9px;
  font-size: 12px;
}
.wn-last-answer {
  font-size: 12px;
  color: var(--text-secondary);
  background: var(--bg);
  border-radius: 8px;
  padding: 8px 10px;
  margin-bottom: 8px;
  line-height: 1.5;
}
.wn-answer-body {
  font-size: 13px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
  margin-top: 6px;
  display: none;
  color: var(--text-secondary);
  line-height: 1.6;
}
.wn-answer-body.open { display: block; }
.wrong-card-actions {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  flex-wrap: wrap;
}
.wrong-card-actions .btn {
  font-size: 12px;
  padding: 5px 11px;
}

/* ─── 시험직전 모드 ─── */
.exam-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  animation: fadeIn 0.25s ease;
}
.exam-top-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-secondary);
}
.exam-progress-dots {
  display: flex;
  gap: 6px;
  margin-left: auto;
}
.exam-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  transition: background 0.2s;
}
.exam-dot.active { background: var(--accent); }
.exam-dot.done   { background: var(--pass); }
.exam-body {
  padding: 22px 20px;
  min-height: 220px;
}
.exam-question {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
  margin-bottom: 18px;
  color: var(--text);
}
.exam-reveal-section {
  display: none;
  border-top: 1px solid var(--border);
  padding-top: 14px;
  margin-top: 4px;
  animation: fadeIn 0.2s ease;
}
.exam-reveal-section.show { display: block; }
.exam-reveal-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.exam-kw-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.exam-outline-list {
  margin: 0; padding-left: 18px;
  font-size: 14px; line-height: 1.8; color: var(--text);
}
.exam-answer-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  background: rgba(0,113,227,0.04);
  border-radius: 8px;
  padding: 12px 14px;
  border-left: 3px solid var(--accent);
}
.exam-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.exam-step-btn {
  flex: 1;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1.5px solid var(--accent);
  background: rgba(0,113,227,0.06);
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: background 0.12s;
}
.exam-step-btn:hover { background: rgba(0,113,227,0.12); }
.exam-step-btn.all-done {
  border-color: var(--pass);
  color: #1a7f32;
  background: rgba(52,199,89,0.07);
}
.exam-source-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}
.exam-source-btn {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-family: var(--font);
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  color: var(--text-secondary);
  transition: border-color 0.12s, color 0.12s;
}
.exam-source-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
  background: rgba(0,113,227,0.05);
}
.exam-done-badge {
  font-size: 11px;
  background: rgba(52,199,89,0.1);
  color: #1a7f32;
  border-radius: 8px;
  padding: 2px 7px;
  margin-left: 6px;
}

/* ─── 인쇄 레이아웃 ─── */
@media print {
  header, nav, .subtab-nav, .filter-bar, .status-bar,
  button, input, textarea, select, .answer-toggle-btn,
  .practice-nav, .typing-input-wrap, .wrong-note-header > .btn {
    display: none !important;
  }
  body { background: white; }
  main { max-width: 100%; padding: 0; }
  .tab-panel { display: block !important; }
  .subtab-panel { display: block !important; }
  .master-card { break-inside: avoid; margin-bottom: 16px; border: 1px solid #ccc; box-shadow: none; }
  .answer-body { display: block !important; }
  .answer-toggle-btn { display: none !important; }
}