:root {
    --bg-1: #e9fbff;
    --bg-2: #d7f6f7;
    --bg-3: #c9f1e8;
    --primary: #13a8b5;
    --primary-strong: #0a8fa5;
    --primary-deep: #0f6f8f;
    --accent: #22c7a9;
    --accent-soft: #5ee0c6;
    --sky: #54c6ff;
    --mint: #a7f3d0;
    --text-1: #123242;
    --text-2: #486676;
    --text-3: #6d8b98;
    --line: rgba(12, 116, 138, 0.12);
    --line-strong: rgba(12, 116, 138, 0.2);
    --white: #ffffff;
    --card: rgba(255, 255, 255, 0.72);
    --card-strong: rgba(255, 255, 255, 0.84);
    --glass: rgba(255, 255, 255, 0.42);
    --shadow-lg: 0 24px 60px rgba(18, 84, 112, 0.16);
    --shadow-md: 0 14px 32px rgba(18, 84, 112, 0.12);
    --shadow-sm: 0 8px 20px rgba(18, 84, 112, 0.08);
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --radius-sm: 12px;
    --max-width: 1240px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--text-1);
    background:
        radial-gradient(circle at 10% 12%, rgba(84, 198, 255, 0.26), transparent 28%),
        radial-gradient(circle at 88% 10%, rgba(34, 199, 169, 0.22), transparent 26%),
        radial-gradient(circle at 50% 100%, rgba(167, 243, 208, 0.2), transparent 35%),
        linear-gradient(135deg, var(--bg-1) 0%, var(--bg-2) 48%, var(--bg-3) 100%);
    line-height: 1.65;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

button,
input {
    font: inherit;
}

button {
    cursor: pointer;
    border: 0;
}

.container {
    width: min(calc(100% - 32px), var(--max-width));
    margin: 0 auto;
    padding: 28px 0 48px;
}

.page-index,
.page-city {
    position: relative;
}

.hero {
    position: relative;
    overflow: hidden;
    padding: 28px;
    border-radius: var(--radius-xl);
    color: #fff;
    box-shadow: var(--shadow-lg);
    background:
        linear-gradient(135deg, rgba(12, 122, 209, 0.92) 0%, rgba(16, 168, 181, 0.9) 52%, rgba(33, 193, 145, 0.86) 100%);
}

.hero::before,
.hero::after {
    content: "";
    position: absolute;
    border-radius: 999px;
    pointer-events: none;
}

.hero::before {
    width: 280px;
    height: 280px;
    right: -80px;
    top: -90px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.24), rgba(255, 255, 255, 0));
}

.hero::after {
    width: 220px;
    height: 220px;
    left: -80px;
    bottom: -100px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0));
}

.home-hero {
    padding: 40px 34px;
    margin-bottom: 22px;
}

.home-hero h1,
.weather-hero h1 {
    margin: 0;
    font-size: clamp(28px, 5vw, 42px);
    line-height: 1.18;
    letter-spacing: 0.01em;
}

.home-hero p {
    margin: 12px 0 0;
    max-width: 720px;
    font-size: 16px;
    color: rgba(255, 255, 255, 0.92);
}

.weather-hero {
    margin-top: 18px;
    margin-bottom: 22px;
    padding: 30px;
}

.hero-top {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 22px;
}

.hero-sub {
    margin-top: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.82);
}

.temp-box {
    flex-shrink: 0;
    min-width: 180px;
    padding: 16px 18px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    text-align: right;
}

.temp {
    font-size: clamp(34px, 5vw, 54px);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.03em;
}

.weather-type {
    margin-top: 8px;
    font-size: 16px;
    color: rgba(255, 255, 255, 0.95);
}

.cards {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 14px;
}

.metric {
    padding: 16px 14px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.16);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.82);
}

.value {
    margin-top: 8px;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    line-height: 1.35;
    word-break: break-word;
}

.search-card,
.detail-search {
    position: relative;
    margin-bottom: 22px;
    padding: 18px;
    border-radius: var(--radius-lg);
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.search-row,
.detail-search-row {
    display: grid;
    grid-template-columns: 1fr 140px;
    gap: 12px;
}

.search-row input,
.detail-search-row input {
    width: 100%;
    height: 54px;
    padding: 0 18px;
    border-radius: 16px;
    border: 1px solid rgba(19, 168, 181, 0.18);
    background: rgba(255, 255, 255, 0.94);
    color: var(--text-1);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.search-row input::placeholder,
.detail-search-row input::placeholder {
    color: var(--text-3);
}

.search-row input:focus,
.detail-search-row input:focus {
    border-color: rgba(19, 168, 181, 0.55);
    box-shadow: 0 0 0 4px rgba(19, 168, 181, 0.12);
}

.search-row button,
.detail-search-row button {
    height: 54px;
    border-radius: 16px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    box-shadow: 0 10px 24px rgba(19, 168, 181, 0.28);
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.search-row button:hover,
.detail-search-row button:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 28px rgba(19, 168, 181, 0.32);
    filter: saturate(1.05);
}

.search-row button:active,
.detail-search-row button:active {
    transform: translateY(0);
}

.suggestions,
.detail-suggestions {
    position: absolute;
    left: 18px;
    right: 18px;
    top: calc(100% - 6px);
    z-index: 20;
    display: none;
    padding: 10px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.97);
    border: 1px solid rgba(19, 168, 181, 0.12);
    box-shadow: 0 22px 44px rgba(22, 91, 117, 0.16);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.suggestion-item,
.detail-suggestion-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 14px;
    border-radius: 14px;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}

.suggestion-item + .suggestion-item,
.detail-suggestion-item + .detail-suggestion-item {
    margin-top: 6px;
}

.suggestion-item:hover,
.detail-suggestion-item:hover {
    background: linear-gradient(135deg, rgba(84, 198, 255, 0.1), rgba(34, 199, 169, 0.08));
}

.suggestion-title,
.detail-suggestion-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-1);
}

.suggestion-meta,
.detail-suggestion-meta,
.suggestion-empty,
.detail-suggestion-empty {
    font-size: 13px;
    color: var(--text-2);
}

main {
    display: block;
}

.section {
    margin-bottom: 22px;
    padding: 22px;
    border-radius: var(--radius-lg);
    background: var(--card-strong);
    border: 1px solid rgba(255, 255, 255, 0.7);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.section h2 {
    margin: 0 0 18px;
    font-size: 22px;
    line-height: 1.25;
    color: var(--text-1);
}

.grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.city-card {
    display: block;
    padding: 18px;
    border-radius: 18px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(241, 252, 251, 0.92));
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.city-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 32px rgba(19, 103, 126, 0.14);
    border-color: rgba(19, 168, 181, 0.26);
}

.name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-1);
}

.meta {
    margin-top: 8px;
    font-size: 13px;
    color: var(--text-2);
}

.links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 10px 16px;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(84, 198, 255, 0.12), rgba(34, 199, 169, 0.12));
    color: var(--primary-deep);
    border: 1px solid rgba(19, 168, 181, 0.16);
    font-size: 14px;
    font-weight: 600;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.chip:hover {
    transform: translateY(-2px);
    border-color: rgba(19, 168, 181, 0.34);
    box-shadow: 0 10px 18px rgba(16, 120, 144, 0.12);
}

.crumb {
    margin-bottom: 16px;
    padding: 12px 16px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.58);
    border: 1px solid rgba(255, 255, 255, 0.66);
    box-shadow: var(--shadow-sm);
    color: var(--text-2);
    font-size: 14px;
    overflow-x: auto;
    white-space: nowrap;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.crumb a {
    color: var(--primary-deep);
    font-weight: 600;
}

.summary {
    padding: 18px 20px;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(84, 198, 255, 0.08), rgba(34, 199, 169, 0.08));
    color: var(--text-1);
    font-size: 16px;
    border: 1px solid rgba(19, 168, 181, 0.12);
}

.air-note {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 18px 20px;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(19, 168, 181, 0.12), rgba(34, 199, 169, 0.12));
    border: 1px solid rgba(19, 168, 181, 0.12);
}

.tip-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.72);
    box-shadow: inset 0 0 0 1px rgba(19, 168, 181, 0.1);
    font-size: 22px;
}

.air-note #airSuggest {
    color: var(--text-1);
    font-size: 15px;
}

.forecast-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
}

.forecast-item {
    padding: 18px 16px;
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(241, 252, 251, 0.94));
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.forecast-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 30px rgba(18, 92, 114, 0.13);
}

.date {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-1);
}

.wx {
    margin: 10px 0 12px;
    font-size: 34px;
    line-height: 1;
}

.forecast-item .meta {
    margin-top: 0;
    font-size: 13px;
    line-height: 1.75;
    color: var(--text-2);
}

.hour-grid {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(110px, 1fr);
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: thin;
}

.hour-item {
    min-height: 140px;
    padding: 18px 14px;
    border-radius: 18px;
    text-align: center;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(240, 252, 250, 0.94));
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
}

.hour-time {
    font-size: 13px;
    color: var(--text-2);
}

.hour-temp {
    margin: 12px 0 10px;
    font-size: 26px;
    font-weight: 800;
    color: var(--primary-deep);
}

.hour-weather {
    font-size: 13px;
    color: var(--text-2);
    line-height: 1.6;
}

.yesterday-card {
    display: grid;
    grid-template-columns: 1.35fr 1fr 1fr;
    gap: 14px;
}

.y-box {
    padding: 20px;
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(241, 252, 251, 0.94));
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
}

.y-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-1);
}

.y-date {
    margin-top: 6px;
    font-size: 13px;
    color: var(--text-2);
}

.y-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-top: 18px;
}

.y-temps {
    display: flex;
    gap: 12px;
}

.y-temp-block {
    min-width: 88px;
    padding: 14px 12px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(84, 198, 255, 0.12), rgba(34, 199, 169, 0.12));
}

.y-temp-label {
    font-size: 12px;
    color: var(--text-2);
}

.y-temp-value {
    margin-top: 8px;
    font-size: 22px;
    font-weight: 800;
    color: var(--primary-deep);
}

.y-icon {
    font-size: 42px;
    line-height: 1;
}

.y-weather {
    margin-top: 14px;
    color: var(--text-2);
    font-size: 14px;
    line-height: 1.85;
}

.indexes-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.index-item {
    position: relative;
    padding: 20px 18px 18px;
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(241, 252, 251, 0.94));
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 64px;
    min-height: 32px;
    padding: 0 12px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    box-shadow: 0 10px 20px rgba(19, 168, 181, 0.18);
}

.index-item h3 {
    margin: 16px 0 10px;
    font-size: 17px;
    color: var(--text-1);
}

.sub-muted {
    color: var(--text-2);
    font-size: 14px;
    line-height: 1.75;
}

.loading,
.error {
    position: relative;
    z-index: 1;
    padding: 22px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.16);
    color: #fff;
    text-align: center;
    font-size: 16px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

footer {
    margin-top: 6px;
    padding: 18px 8px 0;
    text-align: center;
    color: var(--text-2);
    font-size: 14px;
}

footer a {
    color: var(--primary-deep);
    font-weight: 600;
}

::selection {
    background: rgba(19, 168, 181, 0.22);
    color: var(--text-1);
}

@media (max-width: 1100px) {
    .cards {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .grid,
    .indexes-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .forecast-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .yesterday-card {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 820px) {
    .container {
        width: min(calc(100% - 24px), var(--max-width));
        padding-top: 18px;
        padding-bottom: 34px;
    }

    .hero,
    .search-card,
    .detail-search,
    .section {
        border-radius: 22px;
    }

    .home-hero,
    .weather-hero {
        padding: 22px;
    }

    .hero-top {
        flex-direction: column;
        align-items: stretch;
    }

    .temp-box {
        width: 100%;
        text-align: left;
    }

    .cards {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .grid,
    .forecast-grid,
    .indexes-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .search-row,
    .detail-search-row {
        grid-template-columns: 1fr;
    }

    .suggestions,
    .detail-suggestions {
        left: 14px;
        right: 14px;
    }
}

@media (max-width: 560px) {
    body {
        line-height: 1.55;
    }

    .container {
        width: min(calc(100% - 18px), var(--max-width));
    }

    .home-hero,
    .weather-hero,
    .search-card,
    .detail-search,
    .section {
        padding: 18px;
    }

    .section h2 {
        font-size: 20px;
    }

    .cards,
    .grid,
    .forecast-grid,
    .indexes-grid {
        grid-template-columns: 1fr;
    }

    .metric {
        padding: 14px 12px;
    }

    .temp {
        font-size: 44px;
    }

    .city-card,
    .forecast-item,
    .index-item,
    .y-box,
    .hour-item {
        border-radius: 16px;
    }

    .y-main {
        flex-direction: column;
        align-items: flex-start;
    }

    .y-temps {
        width: 100%;
        flex-direction: column;
    }

    .y-temp-block {
        width: 100%;
    }

    .crumb {
        font-size: 13px;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-1: #08151d;
        --bg-2: #0c2430;
        --bg-3: #113430;
        --text-1: #e8fbff;
        --text-2: #b7d7de;
        --text-3: #8db0b9;
        --line: rgba(118, 218, 228, 0.12);
        --line-strong: rgba(118, 218, 228, 0.2);
        --card: rgba(10, 29, 40, 0.72);
        --card-strong: rgba(10, 29, 40, 0.84);
        --glass: rgba(12, 34, 46, 0.52);
    }

    body {
        background:
            radial-gradient(circle at 10% 12%, rgba(58, 160, 210, 0.18), transparent 30%),
            radial-gradient(circle at 86% 10%, rgba(34, 199, 169, 0.14), transparent 28%),
            linear-gradient(135deg, var(--bg-1) 0%, var(--bg-2) 52%, var(--bg-3) 100%);
    }

    .search-row input,
    .detail-search-row input,
    .suggestions,
    .detail-suggestions,
    .city-card,
    .forecast-item,
    .hour-item,
    .y-box,
    .index-item,
    .summary,
    .crumb {
        background-color: rgba(10, 29, 40, 0.82);
        color: var(--text-1);
    }

    .search-row input,
    .detail-search-row input,
    .city-card,
    .forecast-item,
    .hour-item,
    .y-box,
    .index-item,
    .summary,
    .crumb,
    .section,
    .search-card,
    .detail-search {
        border-color: rgba(118, 218, 228, 0.12);
    }

    .city-card,
    .forecast-item,
    .hour-item,
    .y-box,
    .index-item,
    .summary,
    .air-note {
        box-shadow: 0 14px 32px rgba(0, 0, 0, 0.2);
    }

    .search-row input::placeholder,
    .detail-search-row input::placeholder,
    .meta,
    .forecast-item .meta,
    .sub-muted,
    .hour-time,
    .hour-weather,
    .y-date,
    .y-weather,
    .suggestion-meta,
    .detail-suggestion-meta,
    .suggestion-empty,
    .detail-suggestion-empty {
        color: var(--text-2);
    }

    .name,
    .date,
    .index-item h3,
    .y-title,
    .section h2,
    .suggestion-title,
    .detail-suggestion-title {
        color: var(--text-1);
    }

    .chip {
        background: linear-gradient(135deg, rgba(84, 198, 255, 0.12), rgba(34, 199, 169, 0.14));
        color: #a9f4ee;
    }

    footer {
        color: var(--text-2);
    }
}

@media print {
    body {
        background: #fff;
    }

    .container {
        width: 100%;
        max-width: none;
        padding: 0;
    }

    .search-card,
    .detail-search,
    .suggestions,
    .detail-suggestions,
    footer {
        display: none !important;
    }

    .hero,
    .section,
    .city-card,
    .forecast-item,
    .hour-item,
    .y-box,
    .index-item {
        box-shadow: none;
        background: #fff;
        color: #222;
        border: 1px solid #ddd;
    }
}