/* 사이트 공통 디자인: 각 페이지의 기본 스타일 뒤에 불러와서 색·글꼴·상단 메뉴를 통일해요 */

:root {
  --bg: #f2f4f7;
  --card: #ffffff;
  --text: #16213a;
  --sub: #5d6778;
  --line: #e4e8ee;
  --accent: #2563eb;
  --accent-strong: #1d4fd8;
  --accent-soft: #eaf1fe;
  --seg: #eef1f5;
  --minus: #e0464e;
  --plus: #0f9d6b;
  --focus: #2563eb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1218;
    --card: #171c24;
    --text: #e9edf3;
    --sub: #98a2b3;
    --line: #262d38;
    --accent: #5b8cff;
    --accent-strong: #7aa2ff;
    --accent-soft: #1a2640;
    --seg: #1f2530;
    --minus: #ff7077;
    --plus: #3fd39a;
    --focus: #7aa2ff;
  }
}

body {
  font-feature-settings: "tnum" 1;
  letter-spacing: -0.005em;
  text-rendering: optimizeLegibility;
  /* 한글이 단어 중간에서 줄바꿈되지 않게 */
  word-break: keep-all;
  overflow-wrap: break-word;
}

/* 상단 메뉴 */
.site-head {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-head .in {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.site-head .logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -0.02em;
  margin-right: auto;
}
.site-head .logo svg { width: 26px; height: 26px; display: block; }
.site-head nav { display: flex; gap: 4px; }
.site-head nav a {
  color: var(--sub);
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  padding: 8px 10px;
  border-radius: 8px;
}
.site-head nav a:hover { color: var(--text); background: var(--seg); }
.site-head nav a[aria-current="page"] { color: var(--accent); }

/* 계산기 페이지에서 상단 메뉴가 있으면 이전 '← 모음' 링크는 숨김 */
.site-head ~ main .crumb { display: none; }
.site-head ~ main { padding-top: 24px; }
/* 글자수 세기의 고정 숫자판이 상단 메뉴 아래에 붙도록 */
.site-head ~ main .sticky { top: 64px; }

/* 제목과 결과 숫자 */
main h1 { font-weight: 800; letter-spacing: -0.03em; }
.big {
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.035em;
  font-variant-numeric: tabular-nums;
}
.big.pay { color: var(--minus); }
.result-head { font-weight: 600; }

/* 카드: 그림자 없이 얇은 테두리로 정돈 */
.card, article {
  border: 1px solid var(--line);
}

/* 입력칸 */
input[type="text"], input[type="date"], select, textarea {
  background: var(--card) !important;
  border-width: 1.5px !important;
  transition: border-color .15s, box-shadow .15s;
}
input[type="text"]:focus, input[type="date"]:focus, select:focus, textarea:focus {
  box-shadow: 0 0 0 4px var(--accent-soft);
}

/* 결과 공유 버튼 */
.share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-top: 18px;
  padding: 13px 16px;
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border: 0;
  border-radius: 12px;
  cursor: pointer;
}
.share-btn:hover { background: color-mix(in srgb, var(--accent-soft) 70%, var(--accent) 12%); }
.share-btn svg { width: 18px; height: 18px; }
.share-toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translate(-50%, 8px);
  max-width: calc(100% - 32px);
  background: #16213a;
  color: #fff;
  padding: 11px 16px;
  border-radius: 12px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 50;
}
.share-toast.show { opacity: 1; transform: translate(-50%, 0); }

/* 이어서 계산해 보세요 */
.next-calc h2 { font-size: 17px; margin: 0 0 6px; }
.next-list a { display: flex; align-items: center; gap: 12px; padding: 12px 2px; color: var(--text); text-decoration: none; }
.next-list a + a { border-top: 1px solid var(--line); }
.next-list a:hover b { color: var(--accent); }
.next-list .ico { flex: none; width: 38px; height: 38px; border-radius: 11px; background: var(--seg); display: grid; place-items: center; font-size: 19px; }
.next-list .t { flex: 1; min-width: 0; }
.next-list .t b { display: block; font-size: 15.5px; letter-spacing: -0.02em; }
.next-list .t span { display: block; font-size: 13px; color: var(--sub); }
.next-list .chev { color: var(--sub); font-size: 20px; line-height: 1; }

/* 계산 기준 표시 */
.verified { display: flex; align-items: flex-start; gap: 6px; font-size: 13px; color: var(--sub); background: var(--seg); border-radius: 10px; padding: 8px 12px; margin: -12px 0 20px; }
.verified::before { content: "✓"; color: var(--plus); font-weight: 800; }

/* 키보드 이동 시 포커스 표시 */
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}