:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --text: #14171a;
  --muted: #68717d;
  --line: #d9dde3;
  --panel: #ffffff;
  --sidebar: #111827;
  --sidebar-muted: #aeb7c3;
  --green: #0b7f3a;
  --red: #b42318;
  --blue: #1d4ed8;
}

* {
  box-sizing: border-box;
}

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

.shell {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: var(--sidebar);
  color: #ffffff;
  padding: 22px;
}

.brand h1 {
  margin: 0;
  font-size: 26px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0;
}

.sidebar .eyebrow,
.side-card p {
  color: var(--sidebar-muted);
}

nav {
  display: grid;
  gap: 8px;
}

.nav-button,
.control-button {
  width: 100%;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
}

.nav-button {
  background: transparent;
  color: #f8fafc;
  padding: 11px 12px;
  text-align: left;
}

.nav-button:hover,
.nav-button.active {
  background: rgba(255, 255, 255, 0.12);
}

.side-card {
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 14px;
}

.side-card h2 {
  margin: 0 0 8px;
  font-size: 16px;
}

.side-card p {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.4;
}

.control-button {
  margin-top: 8px;
  padding: 10px 12px;
  background: #e5e7eb;
  color: #111827;
}

.control-button.danger {
  background: #fee2e2;
  color: #7f1d1d;
}

.control-button.save {
  background: #dbeafe;
  color: #1e3a8a;
}

.status {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--sidebar-muted);
}

#connection-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #c7cbd1;
}

#connection-dot.ok {
  background: var(--green);
}

#connection-dot.bad {
  background: var(--red);
}

main {
  width: min(1450px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
}

h2 {
  margin: 0;
  font-size: 24px;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

article,
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

article {
  padding: 16px;
}

article span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 8px;
}

article strong {
  display: block;
  font-size: 24px;
}

.panel {
  margin-top: 16px;
  overflow: hidden;
}

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

.section-title {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.section-title h2 {
  font-size: 18px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

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

th {
  color: var(--muted);
  font-weight: 700;
  background: #fbfcfd;
}

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

.compact-list {
  display: grid;
  gap: 8px;
  padding: 12px;
}

.compact-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
}

.compact-item strong {
  font-size: 14px;
}

.compact-item span,
.compact-item small {
  color: var(--muted);
  font-size: 12px;
}

.settings-panel {
  max-width: 720px;
}

.settings-form {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 14px;
  align-items: end;
  padding: 16px;
}

.settings-form label {
  display: grid;
  gap: 7px;
}

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

.settings-form input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
}

.risk-note {
  border-top: 1px solid var(--line);
  padding: 14px 16px;
  color: var(--muted);
  font-size: 14px;
}

.risk-note p {
  margin: 0 0 8px;
}

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

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

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

@media (max-width: 1100px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

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

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

  .settings-form {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  main {
    width: min(100% - 20px, 1450px);
  }

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