:root {
    color-scheme: light;
    --bg: #f6f7f9;
    --panel: #ffffff;
    --line: #dfe3e8;
    --text: #1f2933;
    --muted: #657281;
    --primary: #246bfe;
    --primary-soft: #eef4ff;
    --danger: #c93636;
    --success: #1b7f4b;
    --warning: #996b00;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

a {
    color: var(--primary);
    text-decoration: none;
}

.shell {
    min-height: 100vh;
    display: flex;
}

.sidebar {
    width: 232px;
    background: #172033;
    color: #fff;
    padding: 22px 16px;
    flex-shrink: 0;
}

.brand {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 28px;
}

.brand-mark {
    width: 36px;
    height: 36px;
    display: inline-grid;
    place-items: center;
    border-radius: 8px;
    background: #fff;
    color: #172033;
    font-weight: 800;
}

.brand small {
    display: block;
    color: #aeb8c6;
    margin-top: 2px;
}

.nav {
    display: grid;
    gap: 4px;
}

.nav a {
    color: #d8deea;
    padding: 10px 12px;
    border-radius: 6px;
}

.nav a:hover {
    background: rgba(255,255,255,.08);
    color: #fff;
}

.content {
    width: 100%;
    padding: 28px;
}

.auth-content {
    width: 100%;
    display: grid;
    place-items: center;
    padding: 24px;
}

.page-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.page-head h1 {
    margin: 0;
    font-size: 24px;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 18px;
    margin-bottom: 18px;
}

.grid {
    display: grid;
    gap: 16px;
}

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

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

.metric {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 18px;
}

.metric strong {
    display: block;
    font-size: 26px;
    margin-bottom: 2px;
}

.metric span {
    color: var(--muted);
}

.table-wrap {
    overflow-x: auto;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 760px;
}

th, td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

th {
    color: var(--muted);
    font-weight: 600;
    background: #fbfcfd;
}

tr:last-child td {
    border-bottom: 0;
}

.form {
    display: grid;
    gap: 14px;
}

.field label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
}

.field small {
    display: block;
    color: var(--muted);
    margin-top: 4px;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="date"],
input[type="number"],
select,
textarea {
    width: 100%;
    border: 1px solid #cfd6df;
    border-radius: 6px;
    padding: 9px 10px;
    background: #fff;
    color: var(--text);
    font: inherit;
}

textarea {
    min-height: 110px;
    resize: vertical;
}

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

.checks label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

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

.btn {
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #fff;
    color: var(--text);
    padding: 9px 13px;
    font: inherit;
    cursor: pointer;
}

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

.btn-danger {
    border-color: #e5b5b5;
    color: var(--danger);
}

.badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 3px 8px;
    font-size: 12px;
    background: var(--primary-soft);
    color: var(--primary);
}

.badge-muted {
    background: #eef0f3;
    color: var(--muted);
}

.badge-success {
    background: #eaf7f0;
    color: var(--success);
}

.badge-danger {
    background: #fdeeee;
    color: var(--danger);
}

.alert {
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 14px;
}

.alert-error {
    background: #fdeeee;
    color: var(--danger);
}

.alert-success {
    background: #eaf7f0;
    color: var(--success);
}

.alert-warning {
    background: #fff7e0;
    color: var(--warning);
}

.login-card {
    width: min(420px, 100%);
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 28px;
}

.login-card h1 {
    margin: 0 0 18px;
}

.muted {
    color: var(--muted);
}

@media (max-width: 860px) {
    .shell {
        display: block;
    }

    .sidebar {
        width: 100%;
    }

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

    .content {
        padding: 18px;
    }

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    .page-head {
        align-items: flex-start;
        flex-direction: column;
    }
}