/* 页面与地图 UI 样式（Leaflet 自身样式见 vendor/leaflet/leaflet.css） */

:root {
    --panel-bg: rgba(255, 255, 255, 0.94);
    --panel-border: rgba(15, 23, 42, 0.08);
    --panel-radius: 10px;
    --panel-shadow: 0 4px 18px rgba(15, 23, 42, 0.18);
    --text: #0f172a;
    --text-muted: #475569;
    --text-faint: #64748b;
    --danger: #b91c1c;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

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

body {
    height: 100%;
    margin: 0;
    overflow: hidden;
    color: var(--text);
    background: #0b1220;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    -webkit-font-smoothing: antialiased;
}

#map {
    width: 100%;
    height: 100vh;
    /* 移动端动态视口高度；不支持 dvh 的浏览器回退到 100vh */
    height: 100dvh;
    background: #dfe7ef;
}

.leaflet-container {
    font-family: inherit;
}

.leaflet-control-attribution {
    background: rgba(255, 255, 255, 0.85);
    color: var(--text-faint);
    font-size: 10px;
}

.leaflet-control-attribution a {
    color: var(--text-muted);
}

/* 仅供屏幕阅读器与搜索引擎读取 */
.visually-hidden {
    position: absolute !important;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

/* ---------- 加载 / 错误提示 ---------- */

.status {
    position: fixed;
    top: 12px;
    left: 50%;
    /* 低于 Leaflet 控件（1000），避免移动端提示条盖住展开的图层控件 */
    z-index: 900;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    width: max-content;
    max-width: min(420px, calc(100vw - 120px));
    padding: 10px 12px;
    border: 1px solid var(--panel-border);
    border-radius: var(--panel-radius);
    background: var(--panel-bg);
    box-shadow: var(--panel-shadow);
    transform: translateX(-50%);
    font-size: 13px;
    line-height: 1.45;
}

.status[hidden] {
    display: none;
}

.status p {
    margin: 0;
}

.status__errors {
    margin: 6px 0 0;
    padding-left: 18px;
    color: var(--danger);
}

.status__errors:empty,
.status__actions:empty {
    display: none;
}

.status__actions {
    display: flex;
    flex-shrink: 0;
    gap: 6px;
    margin-left: auto;
}

.status__close {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    margin: -4px -6px 0 0;
    padding: 0;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: var(--text-faint);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
}

.status__close[hidden] {
    display: none;
}

.status__close:hover,
.status__close:focus-visible {
    background: rgba(15, 23, 42, 0.08);
}

.status__action {
    padding: 4px 10px;
    border: 1px solid rgba(15, 23, 42, 0.15);
    border-radius: 6px;
    background: #f8fafc;
    color: var(--text);
    font: inherit;
    font-size: 12px;
    cursor: pointer;
}

.status__action:hover,
.status__action:focus-visible {
    background: #e2e8f0;
}

/* ---------- 当前图层信息 ---------- */

.layer-info {
    position: fixed;
    bottom: 44px;
    left: 12px;
    z-index: 1100;
    width: min(320px, calc(100vw - 24px));
    padding: 12px 38px 12px 14px;
    border: 1px solid var(--panel-border);
    border-radius: var(--panel-radius);
    background: var(--panel-bg);
    box-shadow: var(--panel-shadow);
    font-size: 14px;
}

.layer-info[hidden] {
    display: none;
}

.layer-info__list {
    margin: 0;
    padding: 0;
    list-style: none;
    max-height: min(50vh, 380px);
    overflow-y: auto;
}

.layer-info__item + .layer-info__item {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--panel-border);
}

.layer-info__title {
    margin: 0 0 4px;
    color: var(--text-faint);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.layer-info__name {
    margin: 0;
    font-weight: 600;
}

.layer-info__detail {
    margin: 2px 0 0;
    color: var(--text-muted);
    font-size: 13px;
}

.layer-info__detail:empty {
    display: none;
}

.layer-info__close {
    position: absolute;
    top: 4px;
    right: 6px;
    width: 28px;
    height: 28px;
    padding: 0;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: var(--text-faint);
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
}

.layer-info__close:hover,
.layer-info__close:focus-visible {
    background: rgba(15, 23, 42, 0.08);
}

/* ---------- 图例（leaflet.legend 插件） ---------- */

.leaflet-legend {
    max-width: min(340px, calc(100vw - 20px));
    max-height: calc(100vh - 140px);
    overflow: auto;
    background: var(--panel-bg);
    border-radius: var(--panel-radius);
    box-shadow: var(--panel-shadow);
}

.leaflet-legend-title {
    color: var(--text);
    font-weight: 600;
}

/* 官方名称较长，允许在面板内换行而不是横向撑破 */
.leaflet-legend .leaflet-legend-item span {
    white-space: normal;
    overflow-wrap: anywhere;
}

/* 图层控件中的长图层名同样允许换行 */
.leaflet-control-layers-expanded {
    max-width: min(380px, calc(100vw - 20px));
}

.leaflet-control-layers label span {
    white-space: normal;
    overflow-wrap: anywhere;
}

/* ---------- 说明按钮 / 对话框 ---------- */

.about-control {
    background: transparent;
    border: 0;
    box-shadow: none;
}

.about-control__button {
    padding: 6px 10px;
    border: 0;
    border-radius: 4px;
    background: #fff;
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.4);
    color: var(--text);
    font: inherit;
    font-size: 12px;
    cursor: pointer;
}

.about-control__button:hover,
.about-control__button:focus-visible {
    background: #f1f5f9;
}

.about-dialog {
    width: min(520px, 92vw);
    max-height: 80vh;
    padding: 20px 22px;
    overflow: auto;
    border: 0;
    border-radius: 14px;
    box-shadow: 0 20px 60px rgba(15, 23, 42, 0.35);
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
}

.about-dialog::backdrop {
    background: rgba(15, 23, 42, 0.45);
}

.about-dialog h2 {
    margin: 0 0 8px;
    font-size: 18px;
}

.about-dialog h3 {
    margin: 16px 0 6px;
    font-size: 14px;
}

.about-dialog ul {
    margin: 0;
    padding-left: 20px;
}

.about-dialog li {
    margin: 3px 0;
}

.about-dialog a {
    color: #1d4ed8;
}

.about-dialog__version {
    color: var(--text-faint);
    font-size: 12px;
}

.about-dialog button {
    margin-top: 16px;
    padding: 6px 16px;
    border: 0;
    border-radius: 8px;
    background: #0f172a;
    color: #fff;
    font: inherit;
    cursor: pointer;
}

.about-dialog button:hover,
.about-dialog button:focus-visible {
    background: #1e293b;
}

/* ---------- 无脚本提示 ---------- */

.noscript {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 24px;
    background: #f8fafc;
    color: var(--text);
    font-size: 15px;
    line-height: 1.7;
    text-align: center;
}

/* ---------- 小屏适配 ---------- */

@media (max-width: 480px) {
    .status {
        max-width: calc(100vw - 140px);
        flex-wrap: wrap;
    }

    .status__actions {
        width: 100%;
        margin-left: 0;
        justify-content: flex-end;
    }

    .layer-info {
        bottom: 38px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ---------- 暗色底图下的叠加层适配 ---------- */
/*
 * 自定义图层 pane 的 class 形如 leaflet-layer-<id>-pane。
 * 暗色底图上提高叠加层的亮度和饱和度，亮色底图保持原色。
 */
.map-theme-dark .leaflet-pane[class*="leaflet-layer-"] {
    filter: brightness(1.3) saturate(1.12);
}

/* ---------- 图层信息面板颜色标签 ---------- */
.layer-info__name-row {
    display: flex;
    align-items: center;
    gap: 7px;
    margin: 0;
    font-weight: 600;
}

.layer-info__swatch {
    flex: 0 0 auto;
    width: 11px;
    height: 11px;
    border: 2px solid transparent;
    border-radius: 3px;
    box-sizing: border-box;
}

.layer-info__swatch--line {
    width: 14px;
    height: 0;
    border: 0;
    border-top: 2px solid currentColor;
    border-radius: 0;
}