:root {
    color-scheme: light;
    --bg: #f5f7fa;
    --surface: #ffffff;
    --surface-2: #eef2f6;
    --text: #18202a;
    --muted: #667384;
    --border: #d8e0e8;
    --accent: #1e5b8f;
    --accent-strong: #17496f;
    --ok: #107c41;
    --warn: #a46400;
    --danger: #a93737;
    --shadow: 0 18px 40px rgba(35, 49, 66, 0.08);
}

[data-theme="dark"] {
    color-scheme: dark;
    --bg: #0f141a;
    --surface: #171e26;
    --surface-2: #202a35;
    --text: #eef3f7;
    --muted: #a2afbd;
    --border: #2d3a47;
    --accent: #6da9d8;
    --accent-strong: #9cc7e7;
    --ok: #50c878;
    --warn: #d6a044;
    --danger: #e06d6d;
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.32);
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--bg);
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg);
}

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

button,
input,
select {
    font: inherit;
}

.auth-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-card {
    width: min(100%, 440px);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 32px;
}

.auth-card.wide {
    width: min(100%, 620px);
}

.auth-heading {
    display: grid;
    gap: 8px;
    margin-bottom: 24px;
}

.auth-heading h1,
.page-header h1 {
    margin: 0;
    font-size: 28px;
    line-height: 1.15;
}

.auth-heading p,
.page-header p,
.muted {
    margin: 0;
    color: var(--muted);
}

.brand-mark {
    width: 34px;
    height: 34px;
    display: inline-grid;
    place-items: center;
    border-radius: 8px;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
}

.brand-mark.large {
    width: 48px;
    height: 48px;
    font-size: 22px;
}

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
}

.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding: 22px;
    border-right: 1px solid var(--border);
    background: var(--surface);
}

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

.brand small,
.user-block small {
    display: block;
    color: var(--muted);
}

.nav-list {
    display: grid;
    gap: 6px;
}

.nav-list a,
.logout,
.quick-switch a,
button,
.secondary {
    border-radius: 8px;
}

.nav-list a {
    padding: 10px 12px;
    color: var(--muted);
}

.nav-list a.active,
.nav-list a:hover {
    color: var(--text);
    background: var(--surface-2);
}

.sidebar-footer {
    margin-top: auto;
    display: grid;
    gap: 12px;
}

.logout {
    padding: 10px 12px;
    border: 1px solid var(--border);
    text-align: center;
}

.content {
    min-width: 0;
    padding: 32px;
}

.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 24px;
}

.quick-switch,
.auth-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.quick-switch a,
.auth-options a {
    padding: 7px 10px;
    border: 1px solid var(--border);
    color: var(--muted);
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(150px, 1fr));
    gap: 14px;
    margin-bottom: 20px;
}

.metric,
.panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.metric {
    min-height: 108px;
    padding: 18px;
    display: grid;
    align-content: space-between;
}

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

.metric strong {
    font-size: 26px;
}

.panel {
    padding: 20px;
    margin-bottom: 18px;
}

.panel h2 {
    margin: 0 0 14px;
    font-size: 18px;
}

.split-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.table-panel {
    padding: 0;
    overflow: hidden;
}

.table-panel h2 {
    padding: 18px 20px 0;
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
}

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

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

th {
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
}

.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 999px;
    background: var(--surface-2);
    color: var(--muted);
    white-space: nowrap;
}

.badge.ok {
    color: var(--ok);
}

.badge.warn {
    color: var(--warn);
}

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

label {
    display: grid;
    gap: 6px;
    color: var(--muted);
}

input,
select {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
}

button,
.secondary {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-height: 42px;
    padding: 10px 14px;
    border: 1px solid var(--accent);
    background: var(--accent);
    color: #fff;
    cursor: pointer;
}

.secondary {
    background: transparent;
    color: var(--danger);
    border-color: var(--danger);
}

.secret-box {
    display: grid;
    gap: 8px;
    padding: 14px;
    margin-bottom: 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface-2);
}

.secret-box code {
    overflow-wrap: anywhere;
    font-size: 18px;
}

.qr-box {
    display: grid;
    place-items: center;
    margin: 0 0 16px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fff;
}

.qr-box img {
    display: block;
    width: 220px;
    height: 220px;
}

.event-list {
    display: grid;
    gap: 10px;
}

.event-list div,
.definition-list {
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface-2);
}

.event-list span,
.definition-list dt {
    display: block;
    color: var(--muted);
    font-size: 12px;
}

.definition-list {
    display: grid;
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 10px;
}

.definition-list dd {
    margin: 0;
    overflow-wrap: anywhere;
}

.notice {
    margin: 0 0 14px;
    padding: 12px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--surface);
}

.notice-error {
    border-color: var(--danger);
    color: var(--danger);
}

.notice-success {
    border-color: var(--ok);
    color: var(--ok);
}

.centered {
    text-align: center;
}

.nav-toggle,
.mobile-menu {
    display: none;
}

@media (max-width: 1100px) {
    .metric-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 820px) {
    .app-shell {
        display: block;
    }

    .sidebar {
        position: static;
        height: auto;
        padding: 16px;
        border-right: 0;
        border-bottom: 1px solid var(--border);
    }

    .mobile-menu {
        display: inline-flex;
        margin-left: auto;
        padding: 6px 9px;
        border: 1px solid var(--border);
        border-radius: 8px;
        color: var(--muted);
    }

    .nav-list,
    .sidebar-footer {
        display: none;
    }

    .nav-toggle:checked + .sidebar .nav-list,
    .nav-toggle:checked + .sidebar .sidebar-footer {
        display: grid;
    }

    .content {
        padding: 20px;
    }

    .page-header,
    .split-grid {
        display: grid;
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .auth-card {
        padding: 22px;
    }

    .metric-grid {
        grid-template-columns: 1fr;
    }

    .page-header h1,
    .auth-heading h1 {
        font-size: 24px;
    }
}