/* AppsCloud 管理控制台 —— 浅色主题，全部资源本地自包含，不依赖外部字体或 CDN。 */

:root {
    color-scheme: light;

    --bg: #f2f5f9;
    --bg-sunken: #eef1f6;
    --surface: #ffffff;
    --surface-muted: #f7f9fc;
    --line: #e2e7ef;
    --line-strong: #d3dae5;

    --text: #16202f;
    --text-soft: #47536a;
    --muted: #6b7688;

    --primary: #2f62e6;
    --primary-dark: #244fc0;
    --primary-soft: #eef2fe;
    --primary-ring: rgba(47, 98, 230, .32);

    --success: #12855a;
    --success-soft: #e6f6ef;
    --warning: #9a6400;
    --warning-soft: #fbf1dc;
    --danger: #c33a48;
    --danger-soft: #fdeef0;

    --radius: .7rem;
    --radius-lg: 1rem;
    --shadow-sm: 0 1px 2px rgba(21, 35, 60, .06);
    --shadow: 0 12px 32px rgba(24, 44, 80, .08);
    --shadow-lg: 0 24px 60px rgba(24, 44, 80, .14);

    --sidebar-w: 15.5rem;

    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
        "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    color: var(--text);
    background: var(--bg);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
button, input, select { font: inherit; color: inherit; }

:focus-visible {
    outline: 3px solid var(--primary-ring);
    outline-offset: 2px;
    border-radius: .35rem;
}

svg { display: block; }

.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: fixed;
    inset: .75rem auto auto .75rem;
    z-index: 20;
    padding: .6rem 1rem;
    background: var(--text);
    color: #fff;
    border-radius: .5rem;
    transform: translateY(-160%);
    transition: transform .15s ease;
}
.skip-link:focus { transform: translateY(0); }

/* ── 应用外壳 ─────────────────────────────────────────────── */

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
}

.sidebar {
    position: sticky;
    top: 0;
    align-self: start;
    height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    padding: 1.6rem 1rem;
    background: var(--surface);
    border-inline-end: 1px solid var(--line);
}

.brand {
    display: flex;
    align-items: center;
    gap: .7rem;
    padding-inline: .5rem;
    color: var(--text);
}
.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 2.3rem;
    aspect-ratio: 1;
    flex: none;
    color: #fff;
    font-weight: 800;
    border-radius: .65rem;
    background: linear-gradient(150deg, #5a83f0, #2b57db);
    box-shadow: 0 8px 18px rgba(43, 87, 219, .28);
}
.brand-text { display: grid; line-height: 1.25; }
.brand-text strong { font-size: .98rem; }
.brand-text small { color: var(--muted); font-size: .72rem; }

.nav {
    display: grid;
    gap: .15rem;
    margin: 0;
}
.nav a {
    position: relative;
    display: flex;
    align-items: center;
    gap: .7rem;
    padding: .6rem .7rem;
    border-radius: .55rem;
    color: var(--text-soft);
    font-weight: 600;
    font-size: .92rem;
}
.nav a svg { width: 1.15rem; height: 1.15rem; flex: none; color: var(--muted); }
.nav a:hover { background: var(--surface-muted); color: var(--text); }
.nav a:hover svg { color: var(--text-soft); }
.nav a[aria-current="page"] {
    background: var(--primary-soft);
    color: var(--primary-dark);
}
.nav a[aria-current="page"] svg { color: var(--primary); }
.nav a[aria-current="page"]::before {
    content: "";
    position: absolute;
    inset-inline-start: -1rem;
    inset-block: .3rem;
    width: .2rem;
    border-radius: 0 .2rem .2rem 0;
    background: var(--primary);
}

.sidebar-foot {
    margin-block-start: auto;
    display: grid;
    gap: .55rem;
    padding-block-start: 1rem;
    border-block-start: 1px solid var(--line);
}
.admin-identity {
    display: flex;
    align-items: center;
    gap: .55rem;
    min-width: 0;
}
.admin-identity .avatar { width: 1.9rem; font-size: .78rem; }
.admin-identity span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-soft);
    font-size: .82rem;
}

.main-content {
    width: min(100%, 78rem);
    padding: clamp(1.4rem, 3.5vw, 3rem);
}

/* ── 标题区 ───────────────────────────────────────────────── */

.page-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-block-end: 1.6rem;
}
.back-link {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    margin-block-end: .5rem;
    color: var(--muted);
    font-size: .86rem;
    font-weight: 600;
}
.back-link:hover { color: var(--text-soft); }

h1 {
    margin: 0;
    font-size: clamp(1.55rem, 2.6vw, 2rem);
    line-height: 1.2;
    letter-spacing: -.02em;
}
h2 { margin: 0; font-size: 1.02rem; }
.page-lead { margin: .4rem 0 0; color: var(--muted); max-width: 52ch; }

.eyebrow {
    margin: 0 0 .3rem;
    color: var(--primary);
    font-size: .68rem;
    font-weight: 800;
    letter-spacing: .09em;
    text-transform: uppercase;
}

/* ── 状态横幅 ─────────────────────────────────────────────── */

.status-banner {
    display: flex;
    align-items: center;
    gap: .9rem;
    margin-block-end: 1.5rem;
    padding: 1rem 1.15rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
}
.status-banner .status-icon {
    display: grid;
    place-items: center;
    width: 2.1rem;
    aspect-ratio: 1;
    flex: none;
    border-radius: 50%;
}
.status-banner .status-icon svg { width: 1.15rem; height: 1.15rem; }
.status-banner strong { display: block; font-size: .95rem; }
.status-banner p { margin: .1rem 0 0; color: var(--muted); font-size: .84rem; }
.status-banner .badge { margin-inline-start: auto; }

.status-banner.is-ok .status-icon { background: var(--success-soft); color: var(--success); }
.status-banner.is-down { border-color: #f0cdd2; background: var(--danger-soft); }
.status-banner.is-down .status-icon { background: #f6d7db; color: var(--danger); }

/* ── 指标卡 ───────────────────────────────────────────────── */

.metric-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: .9rem;
}
.metric-grid-compact { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.metric-card, .panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.metric-card { padding: 1.1rem 1.15rem; }
.metric-label {
    color: var(--muted);
    font-size: .72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
}
.metric-card strong {
    display: block;
    margin-block: .3rem .1rem;
    font-size: 1.9rem;
    line-height: 1.1;
    letter-spacing: -.02em;
    font-variant-numeric: tabular-nums;
}
.metric-card .metric-date { font-size: 1.25rem; }
.metric-card small { color: var(--muted); font-size: .78rem; }

/* ── 面板 ─────────────────────────────────────────────────── */

.panel { padding: 1.2rem 1.25rem; }
.panel-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    padding-block-end: .9rem;
}
.panel-head a { font-size: .82rem; font-weight: 700; }

.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: .9rem;
    margin-block-start: .9rem;
}
.trend-panel, .detail-panel { margin-block-start: .9rem; }

/* ── 趋势条形图 ───────────────────────────────────────────── */

.trend-chart {
    --rows: 6;
    position: relative;
    block-size: 12rem;
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    align-items: end;
    gap: clamp(.4rem, 2vw, 1.1rem);
    padding-block-start: 1rem;
    background:
        repeating-linear-gradient(
            to top,
            transparent 0,
            transparent calc((100% - 1rem) / var(--rows) - 1px),
            var(--line) calc((100% - 1rem) / var(--rows) - 1px),
            var(--line) calc((100% - 1rem) / var(--rows)));
}
.trend-column {
    block-size: 100%;
    display: grid;
    grid-template-rows: 1.3rem 1fr auto;
    gap: .35rem;
    text-align: center;
    color: var(--muted);
    font-size: .74rem;
}
.trend-value { color: var(--text-soft); font-weight: 700; }
.trend-bar {
    align-self: end;
    block-size: var(--trend-height);
    min-block-size: .25rem;
    border-radius: .4rem .4rem .15rem .15rem;
    background: linear-gradient(180deg, var(--primary), #7ba0f6);
}
.trend-column.is-empty .trend-bar { background: var(--line-strong); }

/* ── 列表堆叠（概览页的最近用户 / 设备） ──────────────────── */

.list-stack { display: grid; }
.list-row {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding-block: .7rem;
    border-block-start: 1px solid var(--line);
}
.list-row:first-child { border-block-start: 0; }
.list-row > div { min-width: 0; flex: 1; }
.list-row strong, .list-row small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.list-row strong { font-size: .88rem; }
.list-row small { color: var(--muted); font-size: .76rem; }

.avatar, .device-icon {
    display: grid;
    place-items: center;
    width: 2rem;
    aspect-ratio: 1;
    flex: none;
    border-radius: .5rem;
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 800;
    font-size: .82rem;
}
.device-icon { background: var(--success-soft); color: var(--success); }
.device-icon svg { width: 1rem; height: 1rem; }

/* ── 徽章 ─────────────────────────────────────────────────── */

.badge {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    white-space: nowrap;
    padding: .2rem .55rem;
    border-radius: 999px;
    background: var(--bg-sunken);
    color: var(--text-soft);
    font-size: .72rem;
    font-weight: 700;
}
.badge-success { color: var(--success); background: var(--success-soft); }
.badge-warning { color: var(--warning); background: var(--warning-soft); }
.badge-danger { color: var(--danger); background: var(--danger-soft); }
.badge-muted { color: var(--muted); }
.badge .dot { width: .4rem; aspect-ratio: 1; border-radius: 50%; background: currentColor; }

/* ── 表格面板 ─────────────────────────────────────────────── */

.table-panel { margin-block-start: 1.4rem; padding: 0; overflow: hidden; }

.toolbar {
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: .9rem 1rem;
    border-block-end: 1px solid var(--line);
    background: var(--surface-muted);
}
.search {
    flex: 1;
    min-width: 12rem;
    display: flex;
    align-items: center;
    gap: .5rem;
    padding-inline: .75rem;
    background: var(--surface);
    border: 1px solid var(--line-strong);
    border-radius: .5rem;
}
.search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-ring); }
.search svg { width: 1rem; height: 1rem; color: var(--muted); flex: none; }
.search input {
    width: 100%;
    border: 0;
    padding-block: .58rem;
    background: transparent;
    outline: 0;
}
.toolbar select {
    padding: .55rem .7rem;
    border: 1px solid var(--line-strong);
    border-radius: .5rem;
    background: var(--surface);
}
.toolbar .button { white-space: nowrap; }

.result-meta {
    padding: .6rem 1rem;
    color: var(--muted);
    font-size: .8rem;
    border-block-end: 1px solid var(--line);
}

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .86rem; }
caption { position: absolute; width: 1px; height: 1px; overflow: hidden; }
th, td {
    padding: .8rem 1rem;
    text-align: start;
    border-block-end: 1px solid var(--line);
    vertical-align: middle;
}
thead th {
    position: sticky;
    top: 0;
    color: var(--muted);
    background: var(--surface-muted);
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .05em;
    text-transform: uppercase;
}
tbody tr:last-child td { border-block-end: 0; }
tbody tr:hover td { background: var(--surface-muted); }
td.num { font-variant-numeric: tabular-nums; }

.identity { display: inline-flex; align-items: center; gap: .65rem; min-width: 0; }
.identity strong { overflow: hidden; text-overflow: ellipsis; }
.identity small, td small { display: block; color: var(--muted); font-size: .76rem; }

code {
    color: var(--primary-dark);
    background: var(--primary-soft);
    padding: .16rem .38rem;
    border-radius: .3rem;
    font-size: .92em;
}

.empty-state {
    padding: 2.5rem 1.5rem;
    color: var(--muted);
    text-align: center;
}
.empty-state svg { width: 2rem; height: 2rem; margin-block-end: .5rem; color: var(--line-strong); }

/* ── 分页 ─────────────────────────────────────────────────── */

.pager {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: .8rem 1rem;
    border-block-start: 1px solid var(--line);
    color: var(--muted);
    font-size: .82rem;
}
.pager .pager-links { display: flex; gap: .4rem; }
.pager a, .pager span.pager-btn {
    display: inline-flex;
    align-items: center;
    padding: .4rem .7rem;
    border: 1px solid var(--line-strong);
    border-radius: .45rem;
    font-weight: 700;
    background: var(--surface);
}
.pager a:hover { border-color: var(--primary); color: var(--primary-dark); }
.pager span.pager-btn { color: var(--line-strong); background: var(--surface-muted); }

/* ── 审计面板 ─────────────────────────────────────────────── */

.audit-panel { margin-block-start: .9rem; padding: 0; overflow: hidden; }

/* ── 系统信息 ─────────────────────────────────────────────── */

.system-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .9rem;
}
.system-card h2 { margin-block: .3rem 1rem; font-size: 1.1rem; }
.system-card dl { margin: 0; display: grid; gap: 0; }
.system-card dl div {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding-block: .7rem;
    border-block-start: 1px solid var(--line);
}
.system-card dl div:first-of-type { border-block-start: 0; }
.system-card dt { color: var(--muted); }
.system-card dd { margin: 0; text-align: end; font-weight: 600; }

/* ── 按钮 ─────────────────────────────────────────────────── */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    cursor: pointer;
    padding: .55rem .9rem;
    border: 1px solid var(--line-strong);
    border-radius: .5rem;
    color: var(--text);
    background: var(--surface);
    font-weight: 700;
    font-size: .88rem;
    transition: background .12s ease, border-color .12s ease;
}
.button:hover { background: var(--surface-muted); }
.button-primary { border-color: var(--primary); color: #fff; background: var(--primary); }
.button-primary:hover { background: var(--primary-dark); }
.button-danger { color: var(--danger); border-color: #eecace; background: var(--danger-soft); }
.button-danger:hover { background: #f9e0e3; }
.button-quiet { width: 100%; background: var(--surface-muted); }
.button-quiet:hover { background: var(--bg-sunken); }
.button-full { width: 100%; padding-block: .7rem; }

/* ── 一次性提示条 ─────────────────────────────────────────── */

.notice {
    display: flex;
    align-items: center;
    gap: .6rem;
    margin-block-end: 1.2rem;
    padding: .8rem 1rem;
    border: 1px solid #cfe6db;
    border-radius: var(--radius);
    background: var(--success-soft);
    color: var(--success);
    font-size: .88rem;
    font-weight: 600;
}
.notice svg { width: 1.1rem; height: 1.1rem; flex: none; }

/* ── 登录页 ───────────────────────────────────────────────── */

.login-body {
    min-height: 100vh;
    background:
        radial-gradient(60rem 40rem at 12% -10%, #e6edfe, transparent 60%),
        radial-gradient(50rem 40rem at 110% 10%, #eaf3ff, transparent 55%),
        var(--bg);
}
.login-main {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.5rem;
}
.login-card {
    width: min(100%, 27rem);
    padding: clamp(1.6rem, 5vw, 2.4rem);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}
.login-brand {
    display: flex;
    align-items: center;
    gap: .6rem;
    margin-block-end: 1.8rem;
    font-size: 1.05rem;
    font-weight: 800;
}
.login-card h1 { font-size: 1.5rem; margin-block-start: .1rem; }
.login-card .subtle { margin-block: .35rem 1.6rem; color: var(--muted); }

.stack-form { display: grid; gap: 1rem; }
.field { display: grid; gap: .4rem; }
.field label { font-size: .82rem; font-weight: 700; }
.field input {
    width: 100%;
    padding: .7rem .8rem;
    border: 1px solid var(--line-strong);
    border-radius: .55rem;
    background: var(--surface);
}
.field input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-ring); outline: 0; }

.form-error { color: var(--danger); font-size: .84rem; }
.form-error:empty { display: none; }
.form-error ul { margin: 0; padding-inline-start: 1.1rem; }
.field-error, .field-validation-error { color: var(--danger); font-size: .8rem; }
.field-error:empty { display: none; }

.login-foot {
    margin: 1.4rem 0 0;
    text-align: center;
    color: var(--muted);
    font-size: .76rem;
}
.status-dot {
    display: inline-block;
    width: .45rem;
    aspect-ratio: 1;
    margin-inline-end: .35rem;
    border-radius: 50%;
    background: var(--success);
}

/* ── 响应式 ───────────────────────────────────────────────── */

@media (max-width: 900px) {
    .app-shell { grid-template-columns: 1fr; }
    .sidebar {
        position: static;
        height: auto;
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        gap: .75rem 1rem;
        padding: .8rem 1rem;
        border-inline-end: 0;
        border-block-end: 1px solid var(--line);
    }
    .nav { grid-auto-flow: column; overflow-x: auto; }
    .nav a[aria-current="page"]::before { display: none; }
    .sidebar-foot {
        margin: 0 0 0 auto;
        padding: 0;
        border: 0;
        grid-auto-flow: column;
        align-items: center;
        gap: .75rem;
    }
    .sidebar-foot .button-quiet { width: auto; }
    .metric-grid { grid-template-columns: repeat(2, 1fr); }
    .metric-grid-compact, .two-column, .system-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
    .metric-grid { grid-template-columns: 1fr; }
    .toolbar { flex-wrap: wrap; }
    .toolbar .search { min-width: 100%; }
    .status-banner { flex-wrap: wrap; }
    .status-banner .badge { margin-inline-start: 0; }
    .admin-identity span { display: none; }
    .pager { flex-direction: column; align-items: stretch; gap: .6rem; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition: none !important; animation: none !important; }
}