:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --panel: #ffffff;
  --text: #1b2430;
  --muted: #657386;
  --line: #d8dee7;
  --accent: #176b87;
  --accent-strong: #124f63;
  --ok: #16774f;
  --warn: #a76300;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}

button,
input {
  font: inherit;
}

button {
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: white;
  cursor: pointer;
  min-height: 40px;
  padding: 0 14px;
}

button:hover {
  background: var(--accent-strong);
}

.app-shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 24px 0;
}

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

.topbar h1 {
  font-size: 24px;
  line-height: 1.2;
  margin: 0;
}

.topbar p {
  color: var(--muted);
  margin: 4px 0 0;
}

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

.icon-button {
  aspect-ratio: 1;
  font-size: 22px;
  padding: 0;
  width: 42px;
}

.secondary-button {
  background: #3f4b5a;
}

.login-panel,
.server-list,
.server-detail,
.table-panel,
.chart-panel,
.metric-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.login-panel {
  max-width: 420px;
  padding: 22px;
}

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

label {
  color: var(--muted);
  display: grid;
  gap: 6px;
  font-size: 14px;
}

input {
  border: 1px solid var(--line);
  border-radius: 6px;
  min-height: 40px;
  padding: 8px 10px;
}

.dashboard {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 16px;
}

.server-list {
  align-self: start;
  overflow: hidden;
}

.panel-title {
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  padding: 12px 14px;
  text-transform: uppercase;
}

.server-button {
  align-items: center;
  background: transparent;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  min-height: 52px;
  padding: 10px 14px;
  text-align: left;
  width: 100%;
}

.server-button:hover,
.server-button.active {
  background: #e8f2f5;
  color: var(--text);
}

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

.server-detail {
  border: 0;
  background: transparent;
  display: grid;
  gap: 16px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(130px, 1fr));
  gap: 12px;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.chart-panel {
  overflow: hidden;
}

.chart-panel canvas {
  display: block;
  height: 160px;
  width: 100%;
}

.metric-card {
  min-height: 92px;
  padding: 14px;
}

.metric-label {
  color: var(--muted);
  font-size: 13px;
}

.metric-value {
  font-size: 22px;
  font-weight: 700;
  margin-top: 8px;
  overflow-wrap: anywhere;
}

.metric-sub {
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}

.table-panel {
  overflow: hidden;
}

.table-wrap {
  overflow-x: auto;
}

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

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 11px 14px;
  text-align: left;
  vertical-align: middle;
}

th {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.usage-bar {
  background: #e5e9ef;
  border-radius: 999px;
  height: 8px;
  overflow: hidden;
  width: 80px;
}

.usage-fill {
  background: var(--ok);
  height: 100%;
}

.usage-fill.warn {
  background: var(--warn);
}

.message {
  background: #26323f;
  border-radius: 6px;
  bottom: 18px;
  color: white;
  left: 50%;
  max-width: min(560px, calc(100vw - 32px));
  padding: 10px 12px;
  position: fixed;
  transform: translateX(-50%);
}

.hidden {
  display: none;
}

@media (max-width: 820px) {
  .dashboard {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 520px) {
  .app-shell {
    width: min(100vw - 20px, 1180px);
    padding: 14px 0;
  }

  .topbar {
    align-items: flex-start;
  }

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