@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap");

:root {
  --ink: #1f2937;
  --muted: #6b7280;
  --brand: #0f766e;
  --brand-dark: #0b5f58;
  --surface: #ffffff;
  --surface-alt: #f3f4f6;
  --border: #e5e7eb;
  --shadow: 0 18px 45px rgba(15, 118, 110, 0.08);
}

html {
  font-size: 16px;
}

body {
  font-family: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: radial-gradient(1200px 600px at -10% -10%, #e0f2f1 0%, transparent 60%),
    radial-gradient(900px 500px at 110% 0%, #e2e8f0 0%, transparent 55%),
    #f8fafc;
  margin-bottom: 60px;
}

.navbar {
  background: rgba(255, 255, 255, 0.9) !important;
  backdrop-filter: blur(10px);
}

.navbar-brand {
  font-weight: 600;
  letter-spacing: 0.3px;
}

.card {
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.table thead th {
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

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

.btn-primary:hover,
.btn-primary:focus {
  background: var(--brand-dark);
  border-color: var(--brand-dark);
}

.btn-outline-secondary {
  border-color: var(--border);
}

.text-muted {
  color: var(--muted) !important;
}

code,
pre,
table td.text-muted {
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.alert {
  border: 1px solid var(--border);
}

.form-control:focus,
.form-select:focus,
.btn:focus,
.btn:active:focus {
  box-shadow: 0 0 0 0.2rem rgba(15, 118, 110, 0.25);
}