:root {
  --color-bg: #f5f6f8;
  --color-surface: #ffffff;
  --color-border: #d9dde2;
  --color-text: #1f2328;
  --color-text-muted: #5b6370;
  --color-primary: #2a5db0;
  --color-primary-hover: #1f4a8f;
  --color-danger: #b0352a;
  --color-success: #1f8a4c;
  --color-warning: #a06a00;
  --radius: 6px;
  font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.5;
}

.hidden { display: none !important; }

/* --- header --- */

#app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
  height: 56px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.header-left { display: flex; align-items: center; gap: 24px; }
.brand { font-weight: 700; font-size: 18px; letter-spacing: 0.5px; }
#app-header nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}
#app-header nav a.active { color: var(--color-text); border-bottom-color: var(--color-primary); font-weight: 600; }
.header-right { display: flex; align-items: center; gap: 12px; color: var(--color-text-muted); }
.role-badge {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 600;
}

/* --- layout --- */

#app-root { max-width: 1100px; margin: 0 auto; padding: 24px; }
.view-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; gap: 12px; }
.view-toolbar h1 { margin: 0; font-size: 20px; }

/* --- login --- */

#view-login { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  width: 320px;
}
.login-card h1 { font-size: 18px; margin: 0 0 20px; text-align: center; }
.login-card form { display: flex; flex-direction: column; gap: 6px; }
.login-card label { font-weight: 600; font-size: 12px; margin-top: 8px; }

/* --- form controls --- */

input[type="text"], input[type="email"], input[type="password"], select {
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 14px;
  width: 100%;
  background: var(--color-surface);
  color: var(--color-text);
}

label { display: block; font-weight: 600; font-size: 12px; margin: 10px 0 4px; }

/* --- buttons --- */

.btn {
  display: inline-block;
  padding: 8px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
}
.btn:hover { background: var(--color-bg); }
.btn-primary { background: var(--color-primary); border-color: var(--color-primary); color: #fff; margin-top: 16px; }
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-secondary { background: var(--color-surface); }
.btn-link { background: none; border: none; color: var(--color-primary); padding: 4px 0; }

/* --- messages --- */

.error-message {
  background: #fdecea;
  color: var(--color-danger);
  border: 1px solid #f3c6c2;
  border-radius: var(--radius);
  padding: 8px 10px;
  margin: 10px 0;
  font-size: 13px;
}
.loading, .empty-state { color: var(--color-text-muted); padding: 24px 0; text-align: center; }
.hint { color: var(--color-text-muted); font-size: 12px; }

/* --- filters --- */

.filters { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.filters input[type="text"] { flex: 1 1 260px; }
.filters select { flex: 0 1 180px; }

/* --- table --- */

.data-table { width: 100%; border-collapse: collapse; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
.data-table th, .data-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--color-border); }
.data-table th { background: var(--color-bg); font-size: 12px; text-transform: uppercase; color: var(--color-text-muted); }
.data-table tbody tr { cursor: pointer; }
.data-table tbody tr:hover { background: #eef2f8; }
.data-table tbody tr:last-child td { border-bottom: none; }

/* --- status badges --- */

.status-badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.status-active, .status-healthy { background: #e4f6ec; color: var(--color-success); }
.status-disabled, .status-stale { background: #fff3e0; color: var(--color-warning); }
.status-decommissioned, .status-none { background: #ececec; color: var(--color-text-muted); }

/* --- dashboard / detail cards --- */

.detail-header { display: flex; align-items: center; gap: 12px; }
.detail-header h1 { margin: 0; font-size: 22px; }
.detail-sub { color: var(--color-text-muted); margin: 4px 0 20px; }
.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 16px; }
.card h2 { margin: 0 0 12px; font-size: 14px; text-transform: uppercase; color: var(--color-text-muted); }
.card dl { margin: 0; }
.card dt { font-size: 12px; color: var(--color-text-muted); margin-top: 8px; }
.card dd { margin: 2px 0 0; }

/* --- responsive --- */

@media (max-width: 700px) {
  #app-root { padding: 12px; }
  .filters { flex-direction: column; }
  .data-table { display: block; overflow-x: auto; }
}