:root {
    color-scheme: light dark;
    --bg: #f5f7fa;
    --surface: #ffffff;
    --surface-soft: #eef2f6;
    --text: #17202a;
    --muted: #5c6875;
    --border: #d8e0e8;
    --accent: #1f7a8c;
    --accent-strong: #135d6c;
    --ok: #1f8f55;
    --warn: #a86b00;
    --bad: #b3261e;
    --shadow: 0 8px 24px rgba(26, 40, 56, 0.08);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #101418;
        --surface: #171d23;
        --surface-soft: #202832;
        --text: #e8edf2;
        --muted: #a8b3bf;
        --border: #2d3742;
        --accent: #58b7c8;
        --accent-strong: #83d4e2;
        --shadow: none;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-width: 320px;
    background: var(--bg);
    color: var(--text);
    font-family: "Segoe UI", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.4;
}

.app-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    padding: 18px clamp(14px, 4vw, 32px);
    border-bottom: 1px solid var(--border);
    background: var(--surface);
}

h1,
h2,
h3,
p {
    margin: 0;
}

h1 {
    font-size: clamp(1.35rem, 2.5vw, 1.9rem);
    font-weight: 700;
}

h2 {
    font-size: 1.05rem;
}

h3 {
    font-size: 1rem;
}

.subtle {
    color: var(--muted);
    font-size: 0.92rem;
}

.connection-panel {
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: flex-end;
    min-width: 180px;
}

.connection-panel button {
    min-height: 36px;
    padding: 6px 10px;
}

.dashboard {
    display: grid;
    gap: 18px;
    padding: 18px clamp(14px, 4vw, 32px) 32px;
}

.section {
    display: grid;
    gap: 12px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: baseline;
}

.metric-grid,
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
}

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

.metric {
    padding: 14px;
}

.metric .label {
    color: var(--muted);
    font-size: 0.88rem;
}

.metric .value {
    margin-top: 4px;
    font-size: 1.35rem;
    font-weight: 700;
}

.card {
    display: grid;
    gap: 12px;
    padding: 14px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: flex-start;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 3px 9px;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-size: 0.85rem;
    white-space: nowrap;
}

.online,
.ok {
    color: var(--ok);
    border-color: color-mix(in srgb, var(--ok), transparent 55%);
}

.offline,
.error {
    color: var(--bad);
    border-color: color-mix(in srgb, var(--bad), transparent 55%);
}

.unknown,
.stale {
    color: var(--warn);
    border-color: color-mix(in srgb, var(--warn), transparent 55%);
}

.detail-list {
    display: grid;
    grid-template-columns: minmax(110px, 0.7fr) minmax(0, 1fr);
    gap: 7px 10px;
}

.detail-list dt {
    color: var(--muted);
}

.detail-list dd {
    margin: 0;
    min-width: 0;
    overflow-wrap: anywhere;
}

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

button,
input,
select {
    min-height: 44px;
    border-radius: 7px;
    border: 1px solid var(--border);
    font: inherit;
}

button {
    padding: 8px 12px;
    background: var(--accent);
    color: #fff;
    cursor: pointer;
}

button.secondary {
    background: var(--surface-soft);
    color: var(--text);
}

button:disabled {
    cursor: wait;
    opacity: 0.55;
}

input,
select {
    min-width: 0;
    padding: 8px 10px;
    background: var(--surface);
    color: var(--text);
}

.inline-form {
    display: grid;
    grid-template-columns: minmax(90px, 1fr) auto;
    gap: 8px;
    width: 100%;
}

.login-page {
    display: grid;
    min-height: 100vh;
    place-items: center;
    padding: 20px;
}

.login-shell {
    width: min(100%, 420px);
}

.login-card {
    display: grid;
    gap: 16px;
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.login-form {
    display: grid;
    gap: 12px;
}

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

.login-form input {
    width: 100%;
}

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

table {
    width: 100%;
    min-width: 720px;
    border-collapse: collapse;
}

th,
td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    text-align: left;
}

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

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

.messages {
    display: grid;
    gap: 8px;
}

.message {
    padding: 12px;
}

.message.error {
    border-color: color-mix(in srgb, var(--bad), transparent 45%);
}

.empty {
    padding: 14px;
    border: 1px dashed var(--border);
    border-radius: 8px;
    color: var(--muted);
}

@media (max-width: 680px) {
    .app-header {
        flex-direction: column;
    }

    .connection-panel {
        align-items: flex-start;
        width: 100%;
    }

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

    .detail-list {
        grid-template-columns: 1fr;
        gap: 2px;
    }

    .detail-list dd {
        margin-bottom: 8px;
    }

    .actions,
    .inline-form {
        display: grid;
        grid-template-columns: 1fr;
    }

    button {
        width: 100%;
    }
}