:root {
  --bg: #f4f7fb;
  --panel: #ffffff;
  --text: #1b2736;
  --muted: #6b7787;
  --line: #dbe3ef;
  --up: #198754;
  --degraded: #c97a00;
  --down: #c0392b;
  --neutral: #6c757d;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
}

a {
  color: #0f5cc0;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.page-shell {
  max-width: 1120px;
  margin: 1.25rem auto;
  padding: 0 1rem 2rem;
}

.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  background: #14253f;
  color: #f3f7fd;
  padding: 0.9rem 1rem;
}

.top-nav a {
  color: #dbe7ff;
  margin-right: 1rem;
}

.nav-user {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.link-button,
.primary-button {
  border: 0;
  border-radius: 6px;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
}

.primary-button {
  background: #1157b5;
  color: white;
}

.link-button {
  background: #e9edf5;
  color: #1b2736;
}

.section-header {
  margin-bottom: 1rem;
}

.section-header h1 {
  margin-bottom: 0.3rem;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 1rem;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}

.counter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.counter-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.8rem;
}

.counter-card h3 {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.counter-card p {
  margin: 0.4rem 0 0;
  font-size: 1.4rem;
  font-weight: 700;
}

.counter-card.up p { color: var(--up); }
.counter-card.degraded p { color: var(--degraded); }
.counter-card.down p { color: var(--down); }
.counter-card.pending p { color: var(--neutral); }

.badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-up { background: #ddf5e7; color: var(--up); }
.badge-degraded { background: #fff1dd; color: var(--degraded); }
.badge-down { background: #fde4e1; color: var(--down); }
.badge-neutral { background: #edf1f5; color: var(--neutral); }

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 0.6rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

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

.inline-form {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.toolbar {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  margin-bottom: 0.8rem;
}

.admin-form {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.8rem;
}

.admin-form label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.3rem;
}

.admin-form input,
.admin-form select,
.admin-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.45rem 0.55rem;
  font: inherit;
  box-sizing: border-box;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.flash-stack {
  max-width: 1120px;
  margin: 0.8rem auto 0;
  padding: 0 1rem;
}

.flash {
  border-radius: 6px;
  padding: 0.55rem 0.75rem;
  margin-bottom: 0.5rem;
  background: #e9edf5;
}

.flash.notice { background: #e3f4e9; }
.flash.alert { background: #fde8e5; }

.login-card {
  max-width: 420px;
  margin: 3rem auto;
  text-align: center;
}

@media (max-width: 900px) {
  .top-nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-user {
    width: 100%;
    justify-content: space-between;
  }
}