/* =====================================================================
   全国天气实时查询 v1.0 - 原生 CSS（无框架，移动端适配）
   ===================================================================== */
:root {
  --c-bg: #eef4fb;
  --c-card: #ffffff;
  --c-primary: #2563eb;
  --c-primary-weak: #dbeafe;
  --c-text: #1f2937;
  --c-text-2: #6b7280;
  --c-line: #e5e9f0;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(30, 60, 120, .08);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

/* 顶部天空渐变装饰 */
.sky {
  position: fixed; inset: 0 0 auto 0; height: 340px; z-index: -1;
  background: linear-gradient(160deg, #bcdcff 0%, #d9ecff 55%, rgba(238,244,251,0) 100%);
}

.container { width: min(1080px, 100% - 32px); margin: 0 auto; }

/* ------------------------------ 头部 ------------------------------ */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.7);
  box-shadow: 0 1px 0 rgba(30,60,120,.06);
}
.header-inner {
  display: flex; align-items: center; gap: 18px;
  padding: 12px 0; flex-wrap: wrap;
}
.logo { display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--c-text); font-weight: 700; font-size: 18px; white-space: nowrap; }
.logo-ic { font-size: 26px; color: #f5a623; }
.logo-sub { font-size: 12px; color: var(--c-text-2); font-weight: 400; margin-left: 4px; }

/* 搜索框 */
.search-box { position: relative; flex: 1 1 320px; max-width: 560px; }
.search-ic { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--c-text-2); font-style: normal; }
#searchInput {
  width: 100%; padding: 11px 40px 11px 40px; font-size: 15px;
  border: 1.5px solid var(--c-line); border-radius: 999px; outline: none;
  background: #fff; transition: border-color .15s, box-shadow .15s;
}
#searchInput:focus { border-color: var(--c-primary); box-shadow: 0 0 0 4px rgba(37,99,235,.12); }
.search-clear {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  border: 0; background: #f0f2f6; color: var(--c-text-2); width: 26px; height: 26px;
  border-radius: 50%; cursor: pointer; font-size: 16px; line-height: 1;
}

.suggest-panel {
  position: absolute; top: calc(100% + 8px); left: 0; right: 0; z-index: 60;
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow);
  border: 1px solid var(--c-line); overflow: hidden;
  max-height: min(60vh, 420px); overflow-y: auto;
}
.suggest-item { display: flex; align-items: center; gap: 10px; padding: 11px 16px; cursor: pointer; }
.suggest-item:hover, .suggest-item.active { background: #f2f7ff; }
.suggest-item .s-main { font-size: 15px; }
.suggest-item .s-sub { font-size: 12px; color: var(--c-text-2); }
.suggest-item .s-ic { color: var(--c-primary); font-style: normal; }
.suggest-empty { padding: 18px 16px; color: var(--c-text-2); font-size: 14px; text-align: center; }
.suggest-hint { padding: 8px 16px; font-size: 12px; color: var(--c-text-2); background: #fafbfd; border-top: 1px solid var(--c-line); }

/* ------------------------------ 主体 ------------------------------ */
.main { flex: 1; padding: 26px 0 40px; }

.loading-block { text-align: center; padding: 60px 0; color: var(--c-text-2); }
.spinning { display: inline-block; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* 页面标题 */
.page-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.page-title { font-size: 24px; font-weight: 700; }
.page-sub { color: var(--c-text-2); font-size: 14px; }

/* 卡片 */
.card {
  background: var(--c-card); border-radius: var(--radius);
  box-shadow: var(--shadow); border: 1px solid rgba(255,255,255,.8);
  padding: 20px;
}

/* 首页 hero */
.hero { text-align: center; padding: 34px 10px 26px; }
.hero h1 { font-size: clamp(22px, 4vw, 32px); margin-bottom: 8px; }
.hero p { color: var(--c-text-2); margin-bottom: 22px; }
.hot-cities { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 16px; border-radius: 999px; cursor: pointer;
  background: #fff; border: 1px solid var(--c-line);
  font-size: 14px; color: var(--c-text); transition: all .15s;
}
.chip:hover { border-color: var(--c-primary); color: var(--c-primary); transform: translateY(-1px); }

/* 省份网格 */
.section-title { font-size: 17px; font-weight: 700; margin: 26px 0 12px; display: flex; align-items: center; gap: 8px; }
.section-title::before { content: ""; width: 4px; height: 16px; background: var(--c-primary); border-radius: 2px; }
.province-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: 10px; }
.province-grid .chip { justify-content: center; }

/* 天气详情页 */
.weather-hero {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 30px;
  padding: 26px 24px;
  background: linear-gradient(135deg, #3b82f6, #60a5fa 55%, #93c5fd);
  color: #fff; border: 0;
}
.weather-hero .w-temp { font-size: 64px; font-weight: 700; line-height: 1; letter-spacing: -2px; }
.weather-hero .w-unit { font-size: 24px; font-weight: 400; opacity: .9; }
.weather-hero .w-icon { font-size: 74px; line-height: 1; filter: drop-shadow(0 4px 10px rgba(0,0,0,.18)); }
.weather-hero .w-text { font-size: 20px; font-weight: 600; }
.weather-hero .w-meta { font-size: 13px; opacity: .85; }
.weather-hero .w-right { margin-left: auto; text-align: right; }
.w-loc { font-size: 14px; opacity: .9; margin-bottom: 2px; }

.stale-banner {
  display: flex; align-items: center; gap: 8px;
  background: #fff8e6; border: 1px solid #ffe1a8; color: #8a6116;
  padding: 10px 16px; border-radius: 10px; margin-top: 12px; font-size: 13px;
}

/* 实况指标网格 */
.metrics-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; margin-top: 14px; }
.metric {
  background: #fff; border: 1px solid var(--c-line); border-radius: 12px;
  padding: 14px 16px; display: flex; flex-direction: column; gap: 2px;
}
.metric .m-label { font-size: 12px; color: var(--c-text-2); display: flex; align-items: center; gap: 6px; }
.metric .m-label i { font-style: normal; color: var(--c-primary); font-size: 15px; }
.metric .m-value { font-size: 19px; font-weight: 600; }
.metric .m-value small { font-size: 12px; color: var(--c-text-2); font-weight: 400; margin-left: 2px; }

/* 预警 */
.alert-banner {
  border-radius: 12px; padding: 14px 16px; margin-top: 14px;
  background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; font-size: 14px;
}
.alert-banner .a-title { font-weight: 700; display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.alert-banner .a-text { white-space: pre-wrap; max-height: 180px; overflow-y: auto; font-size: 13px; color: #7f1d1d; }

/* 7天预报 */
.forecast-list { display: grid; gap: 10px; margin-top: 14px; }
.fc-day {
  display: grid; grid-template-columns: 92px 44px 1fr 130px; gap: 8px; align-items: center;
  background: #fff; border: 1px solid var(--c-line); border-radius: 12px; padding: 12px 16px;
}
.fc-day .fc-date b { display: block; font-size: 15px; }
.fc-day .fc-date span { font-size: 12px; color: var(--c-text-2); }
.fc-day .fc-ic { font-size: 30px; text-align: center; color: #f5a623; }
.fc-day .fc-ic.is-night { color: #6366f1; }
.fc-day .fc-text { font-size: 14px; color: var(--c-text); }
.fc-day .fc-text small { display: block; color: var(--c-text-2); font-size: 12px; }
.fc-day .fc-temp { text-align: right; font-weight: 600; font-size: 15px; }
.fc-day .fc-temp .low { color: var(--c-text-2); font-weight: 400; }
.fc-note { font-size: 12px; color: var(--c-text-2); margin-top: 8px; }

/* 省份/城市 列表页 */
.city-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; margin-top: 14px; }
.city-item {
  display: flex; align-items: center; gap: 12px; cursor: pointer;
  background: #fff; border: 1px solid var(--c-line); border-radius: 12px; padding: 12px 16px;
  transition: all .15s;
}
.city-item:hover { border-color: var(--c-primary); transform: translateY(-2px); box-shadow: var(--shadow); }
.city-item .ci-name { font-weight: 600; }
.city-item .ci-sub { font-size: 12px; color: var(--c-text-2); }
.city-item .ci-right { margin-left: auto; text-align: right; }
.city-item .ci-temp { font-size: 20px; font-weight: 700; }
.city-item .ci-text { font-size: 12px; color: var(--c-text-2); }
.city-item .ci-ic { font-size: 26px; color: #f5a623; }
.city-item .ci-loading { color: var(--c-text-2); font-size: 13px; }

.crumbs { font-size: 13px; color: var(--c-text-2); margin-bottom: 4px; }
.crumbs a { color: var(--c-primary); text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }

/* 错误块 */
.error-block {
  text-align: center; padding: 50px 20px; color: var(--c-text-2);
}
.error-block i { font-size: 44px; display: block; margin-bottom: 10px; color: #f59e0b; }

/* ------------------------------ 全国地图 ------------------------------ */
.map-card {
  background: linear-gradient(170deg, #f4f9ff 0%, #eaf3fd 100%);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 14px 10px;
}
.map-wrap { position: relative; max-width: 860px; margin: 0 auto; }
.china-svg { display: block; width: 100%; height: auto; }
.map-prov {
  fill: #a9cdee;
  stroke: #ffffff;
  stroke-width: .8;
  cursor: pointer;
  transition: fill .15s;
  outline: none;
}
.map-prov:hover, .map-prov:focus { fill: #2e6fd8; }
.map-label {
  font-size: 14px;
  fill: #2c4a6e;
  text-anchor: middle;
  dominant-baseline: middle;
  pointer-events: none;
  paint-order: stroke;
  stroke: rgba(255,255,255,.85);
  stroke-width: 2.5px;
  font-weight: 600;
}
.map-label-sm { font-size: 11px; }
.map-inset-frame {
  fill: rgba(255,255,255,.6);
  stroke: #7fa8cf;
  stroke-width: 1;
  stroke-dasharray: 4 3;
}
.map-inset-path { fill: #6f9cc9; stroke: #6f9cc9; stroke-width: 1.2; stroke-linejoin: round; }
.map-label-inset { font-size: 11px; font-weight: 400; fill: #5a7ca3; }
.map-tip {
  position: absolute; z-index: 5; pointer-events: none;
  background: rgba(31, 58, 95, .92); color: #fff;
  font-size: 12px; line-height: 1; padding: 7px 10px; border-radius: 6px;
  white-space: nowrap; box-shadow: 0 4px 12px rgba(15,40,80,.25);
}
.title-sub { font-size: 12px; color: var(--c-text-2); font-weight: 400; margin-left: 4px; }

/* ------------------------------ 页脚 ------------------------------ */
.footer { border-top: 1px solid var(--c-line); padding: 18px 0 26px; color: var(--c-text-2); font-size: 13px; text-align: center; }
.footer a { color: var(--c-primary); text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.footer-tip { margin-top: 4px; opacity: .8; }
.footer-copy { margin-top: 8px; padding-top: 8px; border-top: 1px dashed var(--c-line); font-size: 13px; }

/* ------------------------------ 移动端 ------------------------------ */
@media (max-width: 640px) {
  .header-inner { gap: 10px; padding: 10px 0; }
  .logo { font-size: 16px; }
  .logo-sub { display: none; }
  .search-box { order: 3; flex-basis: 100%; }
  .main { padding: 16px 0 30px; }
  .weather-hero { padding: 20px 18px; }
  .weather-hero .w-temp { font-size: 52px; }
  .weather-hero .w-icon { font-size: 56px; }
  .weather-hero .w-right { margin-left: 0; text-align: left; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .fc-day { grid-template-columns: 74px 38px 1fr 96px; padding: 10px 12px; }
  .city-list { grid-template-columns: 1fr; }
  .province-grid { grid-template-columns: repeat(auto-fill, minmax(86px, 1fr)); }
}