:root {
    --bg: #f5f6f8;
    --surface: #ffffff;
    --surface-2: #fafbfc;
    --border: #e5e7eb;
    --border-strong: #d5d9e0;
    --text: #16181d;
    --text-2: #4b5563;
    --muted: #8b929e;
    --accent: #2563eb;
    --accent-soft: #eff4ff;
    --radius: 12px;
    --shadow-sm: 0 1px 2px rgba(16, 24, 40, .05);
    --shadow-md: 0 6px 16px -6px rgba(16, 24, 40, .18);
    --st-online: #16a34a;
    --st-maintenance: #94a3b8;
    --st-offline: #475569;
    --st-unknown: #f59e0b;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
}

a {
    color: inherit;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.container {
    width: min(1240px, 100% - 40px);
    margin-left: auto;
    margin-right: auto;
}

/* ---------- 顶栏 ---------- */

.topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.topbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 64px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.brand__mark {
    font-size: 26px;
    line-height: 1;
}

.brand__text {
    display: flex;
    flex-direction: column;
}

.brand__text strong {
    font-size: 17px;
}

.brand__text small {
    color: var(--muted);
    font-size: 12px;
}

.main {
    padding: 24px 0 48px;
}

.flash {
    margin-bottom: 16px;
    padding: 10px 14px;
    border: 1px solid #cddbff;
    border-radius: 10px;
    background: var(--accent-soft);
    color: #1e40af;
}

/* ---------- 按钮 / 标签 ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 14px;
    border: 1px solid transparent;
    border-radius: 9px;
    font: inherit;
    font-size: 14px;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
}

.btn--primary {
    background: var(--accent);
    color: #fff;
}

.btn--primary:hover {
    background: #1d4ed8;
}

.btn--ghost {
    border-color: var(--border-strong);
    background: var(--surface);
    color: var(--text-2);
}

.btn--ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    padding: 3px 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    color: var(--text-2);
    font-size: 13px;
    text-decoration: none;
    transition: background .12s, border-color .12s, color .12s;
}

.chip:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.chip sup {
    font-size: 10px;
    color: var(--muted);
}

.chip--on {
    border-color: var(--accent);
    background: var(--accent);
    color: #fff;
}

.chip--on:hover {
    color: #fff;
}

.chip--on sup {
    color: rgba(255, 255, 255, .75);
}

.chip--sm {
    padding: 2px 9px;
    font-size: 12px;
}

/* ---------- 筛选工具条 ---------- */

.toolbar {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
}

.toolbar__row {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    flex-wrap: wrap;
}

.toolbar__row--tags {
    align-items: center;
}

.toolbar__label {
    color: var(--muted);
    font-size: 12px;
}

.toolbar__clear {
    margin-left: auto;
    color: var(--muted);
    font-size: 13px;
}

.toolbar__clear:hover {
    color: var(--accent);
}

.searchbox {
    display: flex;
    flex: 1 1 320px;
    align-items: center;
    gap: 8px;
    padding: 0 4px 0 10px;
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    background: var(--surface-2);
}

.searchbox:focus-within {
    border-color: var(--accent);
    background: var(--surface);
}

.searchbox__icon {
    font-size: 14px;
    color: var(--muted);
}

.searchbox input {
    flex: 1;
    min-width: 0;
    padding: 9px 0;
    border: 0;
    outline: 0;
    background: transparent;
    color: inherit;
    font: inherit;
}

.searchbox .btn {
    margin: 4px 0;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.field__label {
    color: var(--muted);
    font-size: 12px;
}

.field select {
    min-width: 108px;
    padding: 8px 10px;
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    background: var(--surface);
    color: inherit;
    font: inherit;
}

.viewtoggle {
    display: flex;
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    overflow: hidden;
}

.viewbtn {
    padding: 8px 12px;
    border: 0;
    background: var(--surface);
    color: var(--muted);
    font-size: 15px;
    line-height: 1;
    cursor: pointer;
}

.viewbtn + .viewbtn {
    border-left: 1px solid var(--border);
}

.viewbtn--on {
    background: var(--accent-soft);
    color: var(--accent);
}

/* ---------- 分组 ---------- */

.resultbar {
    margin: 18px 2px 10px;
    color: var(--muted);
    font-size: 13px;
}

.group {
    margin-bottom: 10px;
}

.group__head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    padding: 6px 2px;
    border-bottom: 1px solid var(--border);
    color: var(--text-2);
    font-size: 13px;
    list-style: none;
    cursor: pointer;
}

.group__head::-webkit-details-marker {
    display: none;
}

.group__head::before {
    display: inline-block;
    content: "▾";
    color: var(--muted);
    font-size: 11px;
    transition: transform .15s;
}

.group:not([open]) .group__head::before {
    transform: rotate(-90deg);
}

.group:not([open]) .group__head {
    margin-bottom: 4px;
}

.group__name {
    font-weight: 600;
}

.group__count {
    padding: 0 7px;
    border-radius: 999px;
    background: #eceef1;
    color: var(--muted);
    font-size: 11px;
}

/* ---------- 卡片 ---------- */

.sites {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 14px;
    margin-bottom: 22px;
}

.card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    transition: box-shadow .15s, transform .15s, border-color .15s;
}

.card:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card__head {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.card__icon {
    display: flex;
    flex: 0 0 42px;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface-2);
    font-size: 22px;
    line-height: 1;
}

.card__title {
    min-width: 0;
}

.card__name {
    margin: 2px 0 6px;
    font-size: 15.5px;
    line-height: 1.3;
    word-break: break-word;
}

.card__code {
    display: inline-block;
    font-family: "SF Mono", "Menlo", "Monaco", "Consolas", monospace;
    font-size: 12px;
    font-weight: 600;
    color: #2563eb;
    background: #eff6ff;
    padding: 1px 6px;
    border-radius: 4px;
    margin-right: 6px;
    vertical-align: middle;
    letter-spacing: .05em;
}

.card__flags {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.state {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--text-2);
    font-size: 12px;
}

.dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--st-unknown);
}

.state--online .dot {
    background: var(--st-online);
    box-shadow: 0 0 0 3px rgba(22, 163, 74, .14);
}

.state--maintenance .dot {
    background: var(--st-maintenance);
}

.state--offline .dot {
    background: var(--st-offline);
}

.state--unknown .dot {
    background: var(--st-unknown);
}

.badge {
    padding: 1px 8px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface-2);
    color: var(--text-2);
    font-size: 11.5px;
}

.card__desc {
    margin: 0;
    color: var(--text-2);
    font-size: 13.5px;
}

.card__tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.card__notes {
    display: -webkit-box;
    overflow: hidden;
    margin: 0;
    padding: 7px 10px;
    border-left: 3px solid #f0c36d;
    border-radius: 0 6px 6px 0;
    background: #fffaf0;
    color: #8a6d3b;
    font-size: 12.5px;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.card__meta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: auto;
    color: var(--muted);
    font-size: 12px;
}

.card__actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.empty {
    padding: 44px 20px;
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--muted);
    text-align: center;
}

.empty p {
    margin: 0 0 12px;
}

/* ---------- 紧凑列表视图 ---------- */

.view-list .sites {
    grid-template-columns: 1fr;
    gap: 8px;
}

.view-list .card {
    flex-direction: row;
    align-items: center;
    gap: 18px;
    padding: 11px 16px;
}

.view-list .card:hover {
    transform: none;
}

.view-list .card__head {
    flex: 0 0 auto;
    align-items: center;
    min-width: 240px;
}

.view-list .card__icon {
    flex-basis: 34px;
    width: 34px;
    height: 34px;
    font-size: 18px;
}

.view-list .card__name {
    margin: 0 0 3px;
    font-size: 14.5px;
}

.view-list .card__desc {
    display: -webkit-box;
    flex: 1 1 auto;
    overflow: hidden;
    min-width: 0;
    margin: 0;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
}

.view-list .card__actions {
    flex: 0 0 auto;
    margin: 0;
}

.view-list .card__tags,
.view-list .card__notes,
.view-list .card__meta {
    display: none;
}

/* ---------- 页脚 ---------- */

.footer {
    border-top: 1px solid var(--border);
    background: var(--surface);
}

.footer__inner {
    padding: 16px 0;
    color: var(--muted);
    font-size: 12.5px;
}

/* ---------- 窄屏 ---------- */

@media (max-width: 820px) {
    .container {
        width: calc(100% - 28px);
    }

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

    .viewtoggle,
    .toolbar__clear {
        align-self: flex-start;
        margin-left: 0;
    }

    .view-list .card {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .view-list .card__head {
        min-width: 0;
    }

    .view-list .card__actions {
        justify-content: flex-start;
    }
}