/* 미세먼지in — 라이트 테마 */
:root {
  --bg: #f5f9fb;
  --card: #ffffff;
  --ink: #1c2b39;
  --muted: #6b7c8d;
  --line: #e3ebf2;
  --sea: #0ea5b7;
  --sea-dark: #0a7d8c;
  --sky: #e6f6f8;
  --hi: #d64545;
  --lo: #2470c8;
  --spring: #ff8a3d;
  --neap: #43a37e;
  --good: #2470c8;
  --normal: #2f9e44;
  --bad: #e8a23d;
  --verybad: #d64545;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  line-height: 1.55; font-size: 15px;
}
a { color: var(--sea); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 980px; margin: 0 auto; padding: 0 14px; }

.site-header { background: var(--card); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px; }
.logo { font-size: 1.45rem; font-weight: 800; color: var(--sea-dark); letter-spacing: -0.5px; }
.logo span { color: var(--spring); }
.gnb { display: flex; gap: 4px; flex-wrap: wrap; }
.gnb a { padding: 6px 10px; border-radius: 8px; color: var(--ink); font-weight: 600; }
.gnb a:hover { background: var(--sky); text-decoration: none; }
.gnb a.hl { color: var(--spring); }
.sch { margin-left: auto; display: flex; gap: 6px; position: relative; }
.sch-wrap { position: relative; }
.sch input { border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; width: 170px; background: var(--bg); }
.sch button { border: 0; background: var(--sea); color: #fff; border-radius: 8px; padding: 7px 14px; font-weight: 700; cursor: pointer; }

.sch-suggest {
  position: absolute; top: calc(100% + 4px); left: 0; right: 0; z-index: 50;
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  list-style: none; margin: 0; padding: 4px; max-height: 320px; overflow-y: auto;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}
.sch-suggest li { margin: 0; }
.sch-suggest a { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; padding: 8px 10px; border-radius: 7px; color: var(--ink); }
.sch-suggest a:hover, .sch-suggest a.on { background: var(--sky); text-decoration: none; }
.sch-suggest a small { color: var(--muted); font-weight: 500; white-space: nowrap; }

main { padding: 20px 14px 40px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; margin: 16px 0; overflow-wrap: anywhere; }
.card h2 { margin: 0 0 12px; font-size: 1.1rem; }
.card h2 small, h1 small { color: var(--muted); font-weight: 500; font-size: 0.8em; }
.note { background: var(--sky); border-color: #cfe5f4; }
.muted { color: var(--muted); }
.crumb { color: var(--muted); font-size: 0.88rem; margin-bottom: 6px; }
h1 { font-size: 1.5rem; margin: 6px 0 12px; letter-spacing: -0.5px; }

.hero { padding: 8px 2px; }
.hero h1 { font-size: 1.6rem; }
.hero small { display: block; font-size: 0.95rem; color: var(--muted); font-weight: 500; margin-top: 4px; }

.badge { display: inline-block; background: var(--sky); color: var(--sea-dark); border-radius: 8px; padding: 2px 9px; font-size: 0.86rem; font-weight: 700; }
.badge.big { padding: 10px 16px; font-size: 0.95rem; background: var(--card); border: 1px solid var(--line); color: var(--ink); font-weight: 500; }
.badge.big strong { font-size: 1.15rem; margin-left: 6px; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 8px; }
.grid.wide { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
.tile { display: block; text-align: center; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 12px 6px; font-weight: 700; color: var(--ink); }
.tile:hover { border-color: var(--sea); color: var(--sea); text-decoration: none; }
.more { margin: 12px 0 0; }
.linklist { list-style: none; margin: 0; padding: 0; }
.linklist li { padding: 7px 0; border-bottom: 1px solid var(--line); }
.linklist li:last-child { border-bottom: 0; }

/* 대기질 등급 */
.aqi { display: inline-block; border-radius: 6px; padding: 2px 8px; font-weight: 700; font-size: 0.85rem; }
.aqi-good { background: #e7f0fb; color: var(--good); }
.aqi-normal { background: #e7f5ef; color: var(--normal); }
.aqi-bad { background: #fdf1e0; color: var(--bad); }
.aqi-verybad { background: #fbe5e5; color: var(--verybad); }
.aqi-unknown { background: #eef1f4; color: var(--muted); }

.rt-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; }
.rtcard { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; text-align: center; }
.rtcard h3 { margin: 0 0 6px; font-size: 0.9rem; color: var(--muted); font-weight: 600; }
.rtcard .val { font-size: 1.6rem; font-weight: 800; }
.rtcard .unit { font-size: 0.8rem; color: var(--muted); font-weight: 500; }

.table-scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
th, td { border: 1px solid var(--line); padding: 7px 9px; text-align: center; }
thead th { background: var(--sky); color: var(--sea-dark); }

.tabs { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.tab { padding: 7px 16px; border: 1px solid var(--line); border-radius: 20px; background: var(--card); font-weight: 700; color: var(--ink); }
.tab.on { background: var(--sea); border-color: var(--sea); color: #fff; }
.tab:hover { text-decoration: none; }

.site-footer { border-top: 1px solid var(--line); background: var(--card); padding: 18px 0 26px; color: var(--muted); font-size: 0.84rem; }
.site-footer .foot-links { font-size: 0.92rem; }
.site-footer .foot-links a { color: var(--ink); font-weight: 600; }

@media (max-width: 640px) {
  body { font-size: 14px; }
  main { padding: 12px 10px 32px; }
  h1 { font-size: 1.22rem; }
  .card { padding: 13px 12px; margin: 12px 0; border-radius: 10px; }
  .site-header .wrap { gap: 8px; padding-top: 8px; padding-bottom: 0; }
  .logo { font-size: 1.25rem; order: 1; }
  .sch { order: 2; margin-left: auto; width: auto; flex: 1; max-width: 230px; }
  .sch input { width: 100%; min-width: 0; padding: 6px 9px; }
  .sch button { padding: 6px 11px; }
  .gnb {
    order: 3; width: 100vw; margin: 0 -14px;
    flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch;
    scrollbar-width: none; padding: 2px 10px 8px; gap: 2px;
  }
  .gnb::-webkit-scrollbar { display: none; }
  .gnb a { flex: 0 0 auto; padding: 5px 9px; font-size: 0.92rem; }
  .hero h1 { font-size: 1.3rem; }
  table { font-size: 0.74rem; }
  th, td { padding: 5px 3px; }
  .m-hide { display: none; }
  .grid { grid-template-columns: repeat(3, 1fr); }
  .grid.wide { grid-template-columns: repeat(3, 1fr); }
  .tile { padding: 10px 4px; font-size: 0.88rem; }
  .tabs .tab { padding: 6px 13px; font-size: 0.9rem; }
  .site-footer { font-size: 0.76rem; }
}