/* PearWeather — 清新风格、响应式、支持深色模式 */

:root {
  --grad-1: #bfe3ff;
  --grad-2: #cdeede;
  --grad-3: #eaf6ff;
  --card: rgba(255, 255, 255, 0.55);
  --card-border: rgba(255, 255, 255, 0.75);
  --text: #0f2a43;
  --muted: #5b7a99;
  --accent: #1f9bd6;
  --accent-2: #15b8a6;
  --shadow: 0 10px 34px rgba(31, 90, 140, 0.14);
  --radius: 22px;
  --radius-sm: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --grad-1: #0b2540;
    --grad-2: #0e3a44;
    --grad-3: #06192c;
    --card: rgba(18, 42, 64, 0.5);
    --card-border: rgba(120, 170, 210, 0.18);
    --text: #e6f3ff;
    --muted: #9fb8d0;
    --accent: #4fb6ec;
    --accent-2: #2fd6c4;
    --shadow: 0 10px 34px rgba(0, 0, 0, 0.4);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: transparent;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

.app {
  max-width: 960px;
  margin: 0 auto;
  padding: 22px 16px 48px;
}

/* ---------- 顶部 ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand-logo {
  width: 30px;
  height: 30px;
}
.brand-name {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.3px;
}

.search {
  position: relative;
  flex: 1 1 280px;
  max-width: 420px;
}
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: 999px;
  padding: 9px 12px;
  box-shadow: var(--shadow);
}
.search-icon {
  width: 18px;
  height: 18px;
  color: var(--muted);
  flex: none;
}
#city-input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  color: var(--text);
  font-size: 15px;
}
#city-input::placeholder {
  color: var(--muted);
}
.locate-btn {
  border: none;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  display: flex;
  padding: 2px;
  border-radius: 50%;
}
.locate-btn svg {
  width: 20px;
  height: 20px;
}

.suggestions {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--card);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  overflow: hidden;
  z-index: 20;
  display: none;
}
.suggestions.open {
  display: block;
}
.sg-item {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  color: var(--text);
  padding: 11px 14px;
  font-size: 14px;
  cursor: pointer;
}
.sg-item:hover {
  background: rgba(127, 196, 240, 0.18);
}
.sg-empty {
  color: var(--muted);
  cursor: default;
}
.sg-empty:hover {
  background: transparent;
}

.status {
  min-height: 20px;
  font-size: 13px;
  color: var(--muted);
  margin: 4px 2px 14px;
}
.status.error {
  color: #e0556b;
}

/* ---------- 卡片通用 ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ---------- 当前天气 hero ---------- */
.hero {
  padding: 22px 24px;
  margin-bottom: 22px;
}
.hero-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.city-name {
  font-size: 26px;
  font-weight: 800;
  margin: 0;
}
.updated {
  margin: 2px 0 0;
  font-size: 13px;
  color: var(--muted);
}
.hero-body {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.hero-left {
  display: flex;
  align-items: center;
  gap: 14px;
}
.current-icon {
  width: 130px;
  height: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.current-icon svg {
  width: 100%;
  height: 100%;
}
.temp-wrap {
  display: flex;
  flex-direction: column;
}
.temp {
  font-size: 64px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -2px;
}
.condition {
  font-size: 17px;
  color: var(--muted);
  margin-top: 4px;
}
.hero-right {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
}
.metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: center;
}
.metric-label {
  font-size: 13px;
  color: var(--muted);
}
.metric-value {
  font-size: 20px;
  font-weight: 700;
}

/* ---------- 区块 ---------- */
.block {
  margin-bottom: 22px;
}
.block-title {
  font-size: 16px;
  font-weight: 700;
  margin: 0 4px 10px;
  color: var(--text);
}

/* 逐小时图表 */
.chart-card {
  padding: 14px 16px;
  margin-bottom: 12px;
}
.hourly-chart {
  width: 100%;
}
.chart-svg {
  width: 100%;
  height: auto;
  display: block;
}
.chart-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2.5;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.chart-dot {
  fill: var(--accent);
}
.chart-label {
  fill: var(--muted);
  font-size: 13px;
  font-family: inherit;
}

.hourly-track {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}
.hcard {
  flex: 0 0 auto;
  width: 72px;
  background: var(--card);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-sm);
  padding: 12px 6px;
  text-align: center;
  box-shadow: var(--shadow);
}
.hcard-time {
  font-size: 12px;
  color: var(--muted);
}
.hcard-icon {
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 4px 0;
}
.hcard-icon svg {
  width: 38px;
  height: 38px;
}
.hcard-temp {
  font-size: 16px;
  font-weight: 700;
}
.hcard-precip {
  font-size: 11px;
  color: var(--accent);
  margin-top: 2px;
}

/* 7 天 */
.daily-track {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}
.dcard {
  flex: 0 0 auto;
  width: 116px;
  background: var(--card);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-sm);
  padding: 14px 10px;
  text-align: center;
  box-shadow: var(--shadow);
}
.dcard-day {
  font-size: 15px;
  font-weight: 700;
}
.dcard-date {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}
.dcard-icon {
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 4px 0;
}
.dcard-icon svg {
  width: 46px;
  height: 46px;
}
.dcard-cond {
  font-size: 13px;
  color: var(--muted);
  min-height: 18px;
}
.dcard-temps {
  margin-top: 6px;
  font-size: 15px;
}
.dcard-temps .tmax {
  font-weight: 700;
}
.dcard-temps .tmin {
  color: var(--muted);
  margin-left: 6px;
}
.dcard-precip {
  margin-top: 4px;
  font-size: 12px;
  color: var(--accent);
}
.dcard-pop {
  margin-top: 2px;
  font-size: 11px;
  color: var(--muted);
}

/* 页脚 */
.footer {
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  margin-top: 28px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 600px) {
  .app {
    padding: 16px 12px 36px;
  }
  .topbar {
    gap: 10px;
  }
  .brand-name {
    font-size: 19px;
  }
  .hero {
    padding: 18px 16px;
  }
  .hero-body {
    justify-content: center;
  }
  .temp {
    font-size: 54px;
  }
  .current-icon {
    width: 104px;
    height: 104px;
  }
  .hero-right {
    gap: 18px;
    width: 100%;
    justify-content: space-around;
    margin-top: 6px;
  }
}

/* ---------- 动态背景层 ---------- */
.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(160deg, var(--grad-1), var(--grad-2) 55%, var(--grad-3));
  transition: background 1s ease, box-shadow 1s ease;
}
.bg::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1s ease, background 1s ease, background-position 1s ease;
}

/* 天气主题配色（浅色） */
.bg.theme-clear   { background: linear-gradient(160deg, #7ec8ff, #bfe9ff 55%, #fff4cf); }
.bg.theme-partly  { background: linear-gradient(160deg, #9ad0f0, #cfe9f7 55%, #eef7ff); }
.bg.theme-cloudy  { background: linear-gradient(160deg, #9fb3c8, #c3d0dc 55%, #e6edf3); }
.bg.theme-fog     { background: linear-gradient(160deg, #c2ccd6, #dde3e9 55%, #eef2f5); }
.bg.theme-rain    { background: linear-gradient(160deg, #52748f, #7d9bb5 55%, #aac0d4); }
.bg.theme-snow    { background: linear-gradient(160deg, #cfe3f2, #e8f3fb 55%, #ffffff); }
.bg.theme-thunder { background: linear-gradient(160deg, #3c4060, #5b4f72 55%, #7a6b92); }

/* 天气主题配色（深色） */
@media (prefers-color-scheme: dark) {
  .bg.theme-clear   { background: linear-gradient(160deg, #143049, #0e3a55 55%, #0a2236); }
  .bg.theme-partly  { background: linear-gradient(160deg, #16374f, #123247 55%, #0c2438); }
  .bg.theme-cloudy  { background: linear-gradient(160deg, #1b2a3a, #243648 55%, #16212e); }
  .bg.theme-fog     { background: linear-gradient(160deg, #2a323c, #343d47 55%, #222932); }
  .bg.theme-rain    { background: linear-gradient(160deg, #16212e, #1f3142 55%, #28384a); }
  .bg.theme-snow    { background: linear-gradient(160deg, #1d3142, #274055 55%, #16242f); }
  .bg.theme-thunder { background: linear-gradient(160deg, #171327, #241b33 55%, #2c2240); }
}

/* 天气图案动画 */
.bg.theme-clear::after {
  opacity: 1;
  background: radial-gradient(circle at 76% 16%, rgba(255, 224, 138, 0.55), transparent 42%);
}
.bg.theme-partly::after {
  opacity: 1;
  background: radial-gradient(circle at 78% 18%, rgba(255, 224, 138, 0.35), transparent 40%);
}
.bg.theme-fog::after {
  opacity: 1;
  background: rgba(225, 230, 235, 0.28);
}
.bg.theme-rain::after,
.bg.theme-thunder::after {
  opacity: 0.55;
  background-image: repeating-linear-gradient(14deg, rgba(255, 255, 255, 0.2) 0 1px, transparent 1px 9px);
  background-size: 16px 16px;
  animation: rain 0.5s linear infinite;
}
.bg.theme-snow::after {
  opacity: 0.8;
  background-image:
    radial-gradient(2px 2px at 18% 28%, #fff, transparent),
    radial-gradient(2px 2px at 52% 64%, #fff, transparent),
    radial-gradient(1.6px 1.6px at 78% 22%, #fff, transparent),
    radial-gradient(2px 2px at 36% 82%, #fff, transparent),
    radial-gradient(1.6px 1.6px at 88% 70%, #fff, transparent);
  background-size: 220px 220px;
  animation: snow 7s linear infinite;
}
@keyframes rain { to { background-position: -22px 66px; } }
@keyframes snow { to { background-position: 0 220px; } }

/* 温度区间冷暖叠加光晕 */
.bg.band-cold { box-shadow: inset 0 0 240px rgba(80, 150, 255, 0.3); }
.bg.band-hot  { box-shadow: inset 0 0 240px rgba(255, 140, 60, 0.28); }

/* ---------- 单位切换 ---------- */
.unit-toggle {
  display: flex;
  background: var(--card);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: 999px;
  padding: 3px;
  box-shadow: var(--shadow);
  flex: none;
}
.unit-toggle button {
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.25s, color 0.25s;
}
.unit-toggle button.active {
  background: var(--accent);
  color: #fff;
}

/* ---------- 背景主题选择器 ---------- */
.weather-picker {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  flex-wrap: wrap;
}
.picker-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
}
.picker-btns {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.picker-btns button {
  border: 1px solid var(--card-border);
  background: var(--card);
  color: var(--text);
  font-size: 13px;
  padding: 7px 13px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.2s, background 0.25s, border-color 0.25s;
}
.picker-btns button:hover { transform: translateY(-1px); }
.picker-btns button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ---------- 温度换算器 ---------- */
.converter {
  display: flex;
  align-items: flex-end;
  gap: 14px;
  padding: 18px 20px;
  flex-wrap: wrap;
}
.conv-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1 1 140px;
}
.conv-label {
  font-size: 13px;
  color: var(--muted);
}
.conv-input {
  border: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.4);
  color: var(--text);
  font-size: 20px;
  font-weight: 700;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.conv-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(31, 155, 214, 0.2);
}
@media (prefers-color-scheme: dark) {
  .conv-input { background: rgba(255, 255, 255, 0.06); }
}
.conv-eq {
  font-size: 22px;
  font-weight: 800;
  color: var(--muted);
  padding-bottom: 12px;
}

/* ---------- 温度区间标签 ---------- */
.temp-tag {
  display: inline-block;
  margin-top: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  background: rgba(31, 155, 214, 0.14);
  padding: 2px 10px;
  border-radius: 999px;
}

/* 卡片入场动画 */
.card { animation: fadeUp 0.5s ease both; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 移动端适配 ---------- */
@media (max-width: 600px) {
  .topbar { justify-content: center; }
  .search { order: 3; flex-basis: 100%; max-width: none; }
  .unit-toggle { order: 2; }
  .weather-picker, .converter { justify-content: center; }
  .conv-eq { padding: 2px 0; }
}