:root {
  --pink: #e64f8c;
  --pink-dark: #bd2e69;
  --purple: #6657ff;
  --ink: #322837;
  --muted: #756c79;
  --line: #eadde6;
  --surface: rgba(255,255,255,.9);
  --sans: "Noto Sans KR", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  min-height: 100vh;
  padding: 32px 18px 60px;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 5%, rgba(255,255,255,.9), transparent 24%),
    linear-gradient(145deg, #fff0c9, #ffe8f3 45%, #e3dcff 100%);
  font-family: var(--sans);
  line-height: 1.55;
}

button, input { font: inherit; }
button { cursor: pointer; }
[hidden] { display: none !important; }

.quiz-shell {
  width: min(760px, 100%);
  margin: 0 auto;
}

.quiz-header {
  padding: 16px 4px 28px;
}

.quiz-back {
  display: inline-flex;
  margin-bottom: 38px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}

.quiz-kicker {
  margin-bottom: 8px;
  color: var(--pink);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 2px;
}

.quiz-header h1 {
  font-size: clamp(34px, 8vw, 58px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -2px;
}

.quiz-header > p:last-child {
  margin-top: 12px;
  color: var(--muted);
}

.quiz-card {
  padding: clamp(22px, 5vw, 38px);
  border: 1px solid rgba(255,255,255,.9);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: 0 24px 70px rgba(68,39,79,.12);
  backdrop-filter: blur(12px);
}

.quiz-card h2 {
  font-size: 24px;
  line-height: 1.25;
}

.quiz-identity {
  padding-bottom: 10px;
}

.quiz-grade {
  margin-top: 26px;
  border: 0;
}

.quiz-grade legend,
.quiz-name > span {
  display: block;
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 800;
}

.quiz-grade__options {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
}

.quiz-grade label { position: relative; }
.quiz-grade input { position: absolute; opacity: 0; pointer-events: none; }
.quiz-grade span {
  display: grid;
  place-items: center;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  font-size: 14px;
  font-weight: 800;
  transition: .16s ease;
}
.quiz-grade input:checked + span {
  border-color: var(--pink);
  background: var(--pink);
  color: #fff;
  box-shadow: 0 8px 20px rgba(230,79,140,.22);
}
.quiz-grade input:focus-visible + span { outline: 3px solid rgba(230,79,140,.22); }

.quiz-name {
  display: block;
  margin-top: 22px;
}

.quiz-name input {
  width: 100%;
  height: 52px;
  padding: 0 15px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  color: var(--ink);
  outline: none;
}
.quiz-name input:focus { border-color: var(--pink); box-shadow: 0 0 0 3px rgba(230,79,140,.14); }

.quiz-primary,
.quiz-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 15px;
  font-weight: 900;
  text-decoration: none;
}
.quiz-primary {
  width: 100%;
  margin-top: 24px;
  border: 0;
  background: linear-gradient(135deg, var(--pink), var(--pink-dark));
  color: #fff;
  box-shadow: 0 12px 28px rgba(230,79,140,.25);
}
.quiz-primary:disabled { opacity: .55; cursor: wait; }
.quiz-secondary { border: 1px solid var(--line); background: #fff; color: var(--ink); }

.quiz-status {
  min-height: 22px;
  margin-top: 12px;
  color: var(--pink-dark);
  font-size: 13px;
  font-weight: 700;
  text-align: center;
}

.quiz-form__head {
  padding: 28px 0 22px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.quiz-question {
  padding: 26px 0;
  border: 0;
  border-bottom: 1px solid var(--line);
}
.quiz-question:last-child { border-bottom: 0; }
.quiz-question legend {
  width: 100%;
  margin-bottom: 14px;
  font-size: 17px;
  font-weight: 800;
}
.quiz-question__number { margin-right: 7px; color: var(--pink); font-weight: 900; }
.quiz-options { display: grid; gap: 9px; }
.quiz-option { position: relative; }
.quiz-option input { position: absolute; opacity: 0; pointer-events: none; }
.quiz-option span {
  display: flex;
  align-items: center;
  min-height: 50px;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  font-size: 14px;
  font-weight: 700;
  transition: .16s ease;
}
.quiz-option span::before {
  content: "";
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  margin-right: 10px;
  border: 2px solid #d7c8d2;
  border-radius: 50%;
}
.quiz-option input:checked + span { border-color: var(--purple); background: #f1efff; color: #4033c8; }
.quiz-option input:checked + span::before { border: 5px solid var(--purple); }
.quiz-option input:focus-visible + span { outline: 3px solid rgba(102,87,255,.18); }

.quiz-short-answer-wrap { display: grid; }
.quiz-short-answer {
  width: 100%;
  min-height: 52px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  outline: none;
  transition: .16s ease;
}
.quiz-short-answer::placeholder { color: #a499a2; font-weight: 500; }
.quiz-short-answer:focus { border-color: var(--purple); box-shadow: 0 0 0 3px rgba(102,87,255,.14); }

.quiz-question--invalid { margin: 0 -12px; padding-right: 12px; padding-left: 12px; border-radius: 16px; background: #fff3f7; }
.quiz-question--invalid .quiz-short-answer { border-color: var(--pink); }

.quiz-complete { text-align: center; }
.quiz-complete__icon {
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: #e9e6ff;
  color: var(--purple);
  font-size: 34px;
  font-weight: 900;
}
.quiz-complete p { margin-top: 10px; color: var(--muted); }
.quiz-complete .quiz-secondary { margin-top: 24px; }
.quiz-complete .quiz-primary { margin-top: 10px; }

@media (max-width: 620px) {
  body { padding: 18px 12px 40px; }
  .quiz-header { padding-bottom: 22px; }
  .quiz-back { margin-bottom: 28px; }
  .quiz-grade__options { grid-template-columns: repeat(3, 1fr); }
}