/* 스포119 — 운동·다이어트 계산기. 순수 정적 사이트용 스타일. */
:root {
  --bg: #f7faf9;
  --card: #ffffff;
  --ink: #1a2b28;
  --muted: #5d6f6b;
  --line: #e3ecea;
  --primary: #0d9488;
  --primary-dark: #0b7c73;
  --primary-soft: #e0f5f2;
  --accent: #f59e0b;
  --danger: #dc2626;
  --radius: 14px;
  --maxw: 760px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  font-size: 16px;
}
a { color: var(--primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── 헤더 ── */
.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 50;
}
.header-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; gap: 16px;
}
.brand { font-size: 20px; font-weight: 800; color: var(--ink); white-space: nowrap; }
.brand b { color: var(--primary); }
.brand small { display: block; font-size: 11px; font-weight: 400; color: var(--muted); }
.nav { display: flex; gap: 4px; margin-left: auto; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.nav a {
  padding: 8px 10px; border-radius: 8px; font-size: 14px; color: var(--muted);
  white-space: nowrap; text-decoration: none;
}
.nav a:hover, .nav a.active { background: var(--primary-soft); color: var(--primary-dark); text-decoration: none; }

/* ── 본문 ── */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 28px 20px 64px; }
.hero {
  background: linear-gradient(135deg, #0d9488, #0b6e64);
  color: #fff; border-radius: var(--radius);
  padding: 36px 28px; margin-bottom: 28px;
}
.hero h1 { margin: 0 0 8px; font-size: 26px; line-height: 1.35; }
.hero p { margin: 0; opacity: .92; font-size: 15px; }
.hero .kicker {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .08em;
  background: rgba(255,255,255,.18); padding: 4px 10px; border-radius: 999px; margin-bottom: 12px;
}
h2.section-title { font-size: 19px; margin: 32px 0 14px; }
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px; margin-bottom: 16px;
}
.card h2, .card h3 { margin-top: 0; }

/* 계산기 카드 그리드 (홈) */
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }
.tool-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; display: block; color: var(--ink); text-decoration: none;
  transition: transform .12s ease, box-shadow .12s ease;
}
.tool-card:hover { text-decoration: none; transform: translateY(-2px); box-shadow: 0 6px 18px rgba(13,148,136,.12); }
.tool-card .icon { font-size: 26px; }
.tool-card h3 { margin: 8px 0 4px; font-size: 16px; }
.tool-card p { margin: 0; font-size: 13.5px; color: var(--muted); }

/* ── 폼 ── */
.field { margin-bottom: 16px; }
.field label { display: block; font-weight: 700; font-size: 14.5px; margin-bottom: 6px; }
.field .hint { font-size: 13px; color: var(--muted); font-weight: 400; }
input[type="number"], input[type="text"], select {
  width: 100%; padding: 12px 14px; font-size: 16px;
  border: 1.5px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink);
}
input:focus, select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 480px) { .row2 { grid-template-columns: 1fr; } }
.seg { display: flex; gap: 8px; flex-wrap: wrap; }
.seg label {
  flex: 1 1 auto; text-align: center; padding: 10px 8px; font-size: 14px;
  border: 1.5px solid var(--line); border-radius: 10px; cursor: pointer; background: #fff; font-weight: 600;
}
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg input:checked + span { font-weight: 800; }
.seg label:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); color: var(--primary-dark); }
.btn {
  display: block; width: 100%; padding: 14px; font-size: 16.5px; font-weight: 800;
  color: #fff; background: var(--primary); border: none; border-radius: 12px; cursor: pointer;
}
.btn:hover { background: var(--primary-dark); }
.btn:active { transform: scale(.99); }

/* ── 결과 ── */
.result {
  display: none; margin-top: 20px; padding: 20px;
  background: var(--primary-soft); border-radius: 12px; border: 1px solid #bfe8e3;
}
.result.show { display: block; }
.result .big { font-size: 34px; font-weight: 800; color: var(--primary-dark); line-height: 1.2; }
.result .big small { font-size: 16px; font-weight: 600; }
.result table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 14.5px; }
.result table th, .result table td { text-align: left; padding: 8px 4px; border-top: 1px solid #cdeae6; }
.result table th { color: var(--muted); font-weight: 600; width: 45%; }
.badge {
  display: inline-block; padding: 4px 12px; border-radius: 999px;
  font-size: 13px; font-weight: 800; margin-top: 8px;
}
.badge.ok { background: #dcfce7; color: #166534; }
.badge.warn { background: #fef3c7; color: #92400e; }
.badge.bad { background: #fee2e2; color: #991b1b; }
.note {
  margin-top: 14px; padding: 14px 16px; font-size: 13.5px; color: var(--muted);
  background: #fff; border: 1px dashed var(--line); border-radius: 10px;
}

/* ── 가이드 ── */
.guide h2 { font-size: 19px; margin: 28px 0 10px; padding-top: 8px; border-top: 1px solid var(--line); }
.guide h2:first-child { border-top: none; margin-top: 0; padding-top: 0; }
.guide ul, .guide ol { padding-left: 20px; }
.guide li { margin-bottom: 8px; }
.toc { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; margin-bottom: 20px; }
.toc b { font-size: 14px; }
.toc ol { margin: 8px 0 0; padding-left: 20px; font-size: 14.5px; }

/* ── 푸터 ── */
.site-footer { border-top: 1px solid var(--line); background: var(--card); }
.footer-inner { max-width: var(--maxw); margin: 0 auto; padding: 28px 20px 40px; font-size: 13.5px; color: var(--muted); }
.footer-inner .flinks { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 12px; }
.disclaimer {
  margin-top: 16px; padding: 12px 14px; background: var(--bg);
  border-radius: 8px; font-size: 12.5px; line-height: 1.6;
}

/* 광고 슬롯 자리 표시 (나중에 AdSense·쿠팡파트너스 삽입) */
.ad-slot {
  margin: 20px 0; padding: 18px; text-align: center;
  border: 1.5px dashed var(--line); border-radius: 10px;
  color: #9db3af; font-size: 13px; background: #fbfdfc;
}

/* 에러 페이지 */
.error-page { text-align: center; padding: 60px 20px; }
.error-page .code { font-size: 64px; font-weight: 800; color: var(--primary); }