:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --panel: #ffffff;
  --text: #172033;
  --muted: #667085;
  --border: #d9e0ea;
  --primary: #0f766e;
  --primary-strong: #115e59;
  --danger: #b42318;
  --warn: #a15c07;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, sans-serif;
  letter-spacing: 0;
}

.hidden {
  display: none !important;
}

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

.login-box {
  width: min(380px, 100%);
  display: grid;
  gap: 12px;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.login-box h1 {
  font-size: 24px;
}

.login-box input,
.login-box button {
  width: 100%;
}

.message {
  min-height: 20px;
  color: var(--danger);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 28px;
  background: #ffffff;
  border-bottom: 1px solid var(--border);
}

h1 {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
}

p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 14px;
}

main {
  width: min(1280px, calc(100% - 32px));
  margin: 24px auto 40px;
}

.auth {
  display: flex;
  gap: 8px;
}

input,
select,
button {
  height: 38px;
  border-radius: 6px;
  border: 1px solid var(--border);
  font: inherit;
}

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

button {
  padding: 0 14px;
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  cursor: pointer;
  white-space: nowrap;
}

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

button.secondary {
  background: #ffffff;
  color: var(--text);
  border-color: var(--border);
}

button.danger {
  background: #fff1f0;
  color: var(--danger);
  border-color: #f4b7b2;
}

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

.metric {
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}

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

.metric strong {
  display: block;
  margin-top: 6px;
  font-size: 22px;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.tab {
  background: #ffffff;
  color: var(--text);
  border-color: var(--border);
}

.tab.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.panel {
  display: none;
}

.panel.active {
  display: block;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 900px;
}

th,
td {
  padding: 11px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  font-size: 14px;
}

th {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

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

.mono {
  font-family: Consolas, "SFMono-Regular", monospace;
}

.status {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 8px;
  border-radius: 999px;
  background: #ecfdf3;
  color: #067647;
  font-size: 12px;
  font-weight: 700;
}

.status.disabled {
  background: #fff1f0;
  color: var(--danger);
}

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

.device-item {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  min-width: 280px;
}

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

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

@media (max-width: 860px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .auth,
  .auth input {
    width: 100%;
  }

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