:root {
  --bg: #f3f4f6;
  --panel: #ffffff;
  --ink: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --brand: #2563eb;
  --brand-dark: #1d4ed8;
  --brand-soft: #dbeafe;
  --good: #15803d;
  --warn: #b45309;
  --bad: #b91c1c;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Geologica", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

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

.engine-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}

.left-rail {
  border-right: 1px solid var(--line);
  padding: 24px 12px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  background: #f9fafb;
}

.brand-block {
  display: grid;
  gap: 8px;
  max-width: 100%;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
  color: var(--muted);
}

.brand-block h1 {
  font-size: 24px;
  line-height: 1.1;
  margin-top: 8px;
}

.brand-logo {
  width: 52px !important;
  height: 52px !important;
  max-width: 52px !important;
  max-height: 52px !important;
  min-width: 44px;
  min-height: 44px;
  display: block;
}

.brand-logo svg {
  width: 100%;
  height: 100%;
  display: block;
}

.subtle {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

.nav-list {
  display: grid;
  gap: 8px;
}

.nav-btn {
  width: 100%;
  border: 1px solid transparent;
  background: transparent;
  color: #374151;
  text-align: left;
  border-radius: 10px;
  padding: 11px 14px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.nav-icon {
  width: 16px;
  height: 16px;
}

.nav-btn:hover {
  background: #eff6ff;
}

.nav-btn.active {
  background: var(--brand);
  border-color: var(--brand);
  color: #ffffff;
}

.session-meta {
  margin-top: auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.mono {
  font-family: "IBM Plex Mono", monospace;
  color: var(--ink);
}

.content {
  padding: 24px;
}

.panel,
.topbar,
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.login-panel {
  max-width: 520px;
  margin: 10vh auto;
  padding: 24px;
  display: grid;
  gap: 18px;
}

.dashboard {
  display: grid;
  gap: 16px;
}

.topbar {
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 16px;
}

.status-chip {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid #bfdbfe;
  background: #eff6ff;
  color: #1d4ed8;
}

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

.card {
  padding: 16px;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-icon {
  width: 16px;
  height: 16px;
  color: #6b7280;
}

.card .label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.card .value {
  font-size: 24px;
  margin-top: 6px;
  font-weight: 700;
}

.panel {
  padding: 20px;
  display: grid;
  gap: 14px;
}

.panel-head {
  display: grid;
  gap: 4px;
}

.panel-head p {
  color: var(--muted);
  font-size: 14px;
}

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

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

label,
.stacked {
  display: grid;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
}

input,
textarea {
  width: 100%;
  border-radius: 10px;
  border: 1px solid #d1d5db;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
}

input:focus,
textarea:focus {
  outline: 2px solid #bfdbfe;
  border-color: var(--brand);
}

.btn {
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 14px;
  font-family: inherit;
  font-weight: 700;
  cursor: pointer;
  width: fit-content;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-dark);
}

.btn-small {
  padding: 6px 10px;
  font-size: 12px;
}

.btn-secondary {
  background: #fff;
  border-color: #d1d5db;
}

.btn-secondary:hover {
  background: #f9fafb;
}

.btn-small {
  padding: 6px 10px;
  font-size: 12px;
}

.row-actions {
  display: flex;
  justify-content: flex-end;
}

.maintenance-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.check-item {
  border: 1px solid #d1d5db;
  border-radius: 10px;
  padding: 10px;
  background: #fff;
  display: flex;
  justify-content: space-between;
  font-size: 14px;
}

.check-item.good {
  border-color: #a7d3b8;
}

.check-item.warn {
  border-color: #e2c691;
}

.check-item.bad {
  border-color: #deaaaa;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
  font-size: 14px;
}

th,
td {
  text-align: left;
  padding: 10px;
  border-bottom: 1px solid #e5e7eb;
}

th {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

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

.logo-mark {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.login-actions {
  display: flex;
  justify-content: flex-start;
}

@media (max-width: 1024px) {
  .engine-shell {
    grid-template-columns: 1fr;
  }

  .left-rail {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .content {
    padding: 18px;
  }

  .card-grid,
  .form-grid.two-col {
    grid-template-columns: 1fr;
  }
}