/* guk9-rank — 모바일 우선 스타일
   결과 카드(.card)는 캡처해서 공유되는 것을 전제로,
   폰 화면 한 장 안에 다 들어오도록 높이를 아낍니다. */

:root {
  --navy:        #1c3d6e;
  --navy-deep:   #14294a;
  --navy-soft:   #eaf0f9;
  --ink:         #16202e;
  --ink-mid:     #4a5666;
  --ink-soft:    #7c8794;
  --line:        #dfe3ea;
  --bg:          #f4f5f8;
  --surface:     #ffffff;
  --danger:      #b3261e;
  --danger-bg:   #fdeceb;
  --warn-ink:    #8a4a09;
  --warn-bg:     #fff5e6;
  --warn-line:   #f0c98a;
  --radius:      14px;
  --shadow:      0 1px 2px rgba(20, 41, 74, .06), 0 8px 24px rgba(20, 41, 74, .07);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
               "Malgun Gothic", "Noto Sans KR", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
}

.wrap {
  max-width: 460px;
  margin: 0 auto;
  padding: 32px 20px calc(40px + env(safe-area-inset-bottom));
}

[hidden] { display: none !important; }

/* ── 도입부 ─────────────────────────────── */

.intro { margin-bottom: 28px; }

.eyebrow {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--navy);
}

.title {
  margin: 0 0 10px;
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.25;
}

.lede {
  margin: 0;
  font-size: 15px;
  color: var(--ink-mid);
}

/* ── 입력 ──────────────────────────────── */

.field-label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-mid);
}

.code-input {
  width: 100%;
  padding: 16px 14px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 26px;            /* 16px 이상이어야 iOS에서 자동 확대되지 않습니다 */
  font-weight: 700;
  letter-spacing: .16em;
  text-align: center;
  text-transform: uppercase;
  transition: border-color .15s, box-shadow .15s;
}

.code-input::placeholder {
  color: #c2c8d2;
  letter-spacing: .16em;
  font-weight: 600;
}

.code-input:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 4px var(--navy-soft);
}

.code-input.is-invalid {
  border-color: var(--danger);
  box-shadow: 0 0 0 4px var(--danger-bg);
}

.field-help {
  margin: 8px 2px 0;
  font-size: 13px;
  color: var(--ink-soft);
}

.error {
  margin: 12px 0 0;
  padding: 11px 13px;
  border-radius: 10px;
  background: var(--danger-bg);
  color: var(--danger);
  font-size: 14px;
  font-weight: 600;
}

/* ── 버튼 ──────────────────────────────── */

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: 52px;
  padding: 14px 18px;
  border: 1.5px solid transparent;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .15s, border-color .15s, opacity .15s;
  -webkit-tap-highlight-color: transparent;
}

.btn-primary {
  margin-top: 16px;
  background: var(--navy);
  color: #fff;
}

.btn-primary:disabled {
  background: #c3cad5;
  cursor: default;
}

.btn-primary:not(:disabled):active { background: var(--navy-deep); }

.btn-ghost {
  background: var(--surface);
  border-color: var(--line);
  color: var(--navy);
}

.btn-ghost:active { background: var(--navy-soft); }

/* 로딩 */

.spinner {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, .45);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

.btn.is-loading .spinner { display: block; }

@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
  .spinner { animation-duration: 2s; }
}

/* ── 안내 블록 / 푸터 ───────────────────── */

.help-block {
  margin-top: 32px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.help-title {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
}

.help-body {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--ink-mid);
}

.help-block .btn { margin: 0; }

.page-foot {
  margin-top: 28px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--ink-soft);
}

.page-foot p { margin: 0 0 6px; }

/* ── 결과 카드 (캡처 대상) ───────────────── */

.card {
  padding: 26px 22px 20px;
  border-radius: 18px;
  background: var(--surface);
  box-shadow: var(--shadow);
  text-align: center;
}

.card-eyebrow {
  margin: 0 0 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--ink-soft);
}

.track {
  margin: 0 0 4px;
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
}

.rank-block { margin: 10px 0 22px; }

.rank-main {
  margin: 0;
  font-size: 60px;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -.03em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.rank-main .unit {
  font-size: 26px;
  font-weight: 700;
  margin-left: 2px;
}

/* 등수가 안 나오는 경우(과락·표본 부족)는 글자가 기니까 줄입니다 */
.rank-main.is-text {
  font-size: 30px;
  letter-spacing: -.01em;
}

.rank-sub {
  margin: 8px 0 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-mid);
}

.score-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--navy-soft);
}

.score-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--navy);
}

.score-value {
  font-size: 15px;
  color: var(--ink-mid);
  font-variant-numeric: tabular-nums;
}

.score-value b {
  font-size: 24px;
  font-weight: 800;
  color: var(--ink);
}

.notice {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--ink-mid);
}

.warn {
  margin: 14px 0 0;
  padding: 11px 13px;
  border: 1px solid var(--warn-line);
  border-radius: 10px;
  background: var(--warn-bg);
  color: var(--warn-ink);
  font-size: 13px;
  line-height: 1.55;
  text-align: left;
}

.warn b {
  display: block;
  margin-bottom: 2px;
  font-weight: 800;
}

.card-foot {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--ink-soft);
}

/* ── 결과 화면 부속 ─────────────────────── */

.capture-hint {
  margin: 14px 2px 0;
  font-size: 13px;
  text-align: center;
  color: var(--ink-soft);
}

.actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}

/* ── 작은 폰 ────────────────────────────── */

@media (max-width: 360px) {
  .wrap  { padding: 24px 16px 32px; }
  .title { font-size: 26px; }
  .code-input { font-size: 23px; letter-spacing: .1em; }
  .rank-main  { font-size: 52px; }
  .card { padding: 22px 18px 18px; }
}