:root {
  --paper: #eee7d5;
  --paper-deep: #e1dac8;
  --ink: #221f1b;
  --muted: #756f64;
  --line: rgba(45, 40, 33, 0.22);
  --accent: #8f211d;
  --accent-dark: #651713;
  --correct: #1f6a43;
  --wrong: #9a2622;
  color: var(--ink);
  font-family: "Noto Serif KR", "Apple SD Gothic Neo", "Batang", "Times New Roman", serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.32), transparent 30%),
    linear-gradient(120deg, #d8d1c0, #f0ead8 48%, #d3cbbb);
  color: var(--ink);
}

button {
  font: inherit;
}

.exam-shell {
  width: min(100%, 760px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 18px;
}

.intro-screen,
.exam-screen {
  min-height: calc(100vh - 36px);
  background:
    linear-gradient(rgba(34, 31, 27, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 100% 28px, auto;
  border: 1px solid var(--line);
  box-shadow: 0 16px 44px rgba(33, 28, 20, 0.2);
}

.intro-screen {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 34px 24px;
}

.exam-label {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0;
}

h1,
h2 {
  margin: 0;
  line-height: 1.18;
  letter-spacing: 0;
}

h1 {
  max-width: 8em;
  font-size: clamp(2.45rem, 14vw, 5.8rem);
}

.exam-meta {
  display: grid;
  gap: 12px;
  margin: 38px 0;
  padding: 0;
}

.exam-meta div {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 14px;
  padding-bottom: 11px;
  border-bottom: 1px solid var(--line);
}

.exam-meta dt {
  color: var(--muted);
  font-size: 0.9rem;
}

.exam-meta dd {
  margin: 0;
  font-weight: 700;
}

.exam-screen {
  display: flex;
  flex-direction: column;
  padding: 18px;
}

.exam-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--ink);
}

.timer-box {
  min-width: 88px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  text-align: right;
}

.timer-box span {
  display: block;
  font-weight: 800;
}

.timer-box small {
  color: var(--muted);
  font-size: 0.72rem;
}

.progress-track {
  height: 5px;
  margin: 16px 0 20px;
  background: rgba(34, 31, 27, 0.14);
}

.progress-track span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--accent);
  transition: width 180ms ease;
}

.question-area {
  flex: 1;
}

.question-kicker {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
}

.question-text {
  margin: 0 0 18px;
  font-size: 1.13rem;
  font-weight: 700;
  line-height: 1.65;
}

.lyrics-box {
  max-height: 240px;
  overflow: auto;
  margin: 0 0 18px;
  padding: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.22);
  color: #2d2923;
  font-family: inherit;
  font-size: 0.9rem;
  line-height: 1.7;
  white-space: pre-wrap;
}

.choices-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.choice-button {
  display: grid;
  grid-template-columns: 30px 1fr;
  align-items: start;
  gap: 10px;
  width: 100%;
  min-height: 54px;
  padding: 13px 12px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: rgba(255, 255, 255, 0.18);
  color: var(--ink);
  text-align: left;
}

.choice-button .choice-mark {
  font-size: 1.1rem;
  line-height: 1.35;
}

.choice-button.selected {
  border-color: var(--accent);
  background: rgba(143, 33, 29, 0.08);
}

.choice-button.correct {
  border-color: var(--correct);
  background: rgba(31, 106, 67, 0.13);
}

.choice-button.wrong {
  border-color: var(--wrong);
  background: rgba(154, 38, 34, 0.12);
}

.exam-actions,
.report-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 22px;
}

.primary-button,
.ghost-button {
  min-height: 48px;
  border: 1px solid var(--accent-dark);
  border-radius: 0;
  font-weight: 800;
}

.primary-button {
  background: var(--accent);
  color: #fff9ed;
}

.primary-button:disabled {
  border-color: var(--line);
  background: #aaa18f;
}

.ghost-button {
  background: transparent;
  color: var(--accent-dark);
}

.report-layer {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(31, 28, 23, 0.48);
}

.report-card {
  width: min(100%, 420px);
  padding: 28px 24px;
  border: 2px solid var(--ink);
  background:
    linear-gradient(rgba(34, 31, 27, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 100% 28px, auto;
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.28);
}

.grade-mark {
  margin: 26px 0 12px;
  font-size: 6rem;
  font-weight: 900;
  line-height: 1;
  color: var(--accent);
}

.score-line {
  margin: 0;
  font-size: 1.2rem;
}

.report-summary {
  min-height: 3.2em;
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.hidden {
  display: none !important;
}

@media (min-width: 680px) {
  .exam-shell {
    padding: 28px;
  }

  .intro-screen,
  .exam-screen {
    min-height: calc(100vh - 56px);
  }

  .intro-screen {
    padding: 54px 46px;
  }

  .exam-screen {
    padding: 30px;
  }
}