:root {
  --navy: #1f3864;
  --navy-dark: #14264a;
  --border: #dfe3ea;
  --bg: #f6f7fb;
  --text: #1c2333;
  --muted: #6b7280;
  --danger: #b3261e;
  --danger-bg: #f8d7da;
  --danger-text: #842029;
  --success-bg: #d1e7dd;
  --success-text: #0f5132;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--navy); text-decoration: none; }
a:hover { text-decoration: underline; }

.navbar {
  background: var(--navy);
  color: white;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  position: sticky;
  top: 0;
  z-index: 100;
}
.navbar .brand { font-weight: 700; font-size: 1.05rem; color: white; }
.navbar nav a { color: #d8def0; margin-left: 1rem; font-size: 0.92rem; }
.navbar nav a:hover { color: white; }
.navbar .muted { color: #d8def0; margin-left: 1rem; font-size: 0.85rem; }

.container { width: 100%; margin: 0 auto; padding: 1.5rem 2.5rem; box-sizing: border-box; }

.card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}
.card.narrow { max-width: 420px; margin: 3rem auto; }

h1 { font-size: 1.5rem; margin-top: 0; }
h2 { font-size: 1.15rem; }

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.header-actions { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }

.flash { padding: 0.75rem 1rem; border-radius: 8px; margin-bottom: 1rem; font-size: 0.92rem; }
.flash.error { background: var(--danger-bg); color: var(--danger-text); }
.flash.success { background: var(--success-bg); color: var(--success-text); }

.muted { color: var(--muted); font-size: 0.88rem; }
.help-text { color: var(--muted); font-size: 0.85rem; }

label { display: block; font-size: 0.85rem; font-weight: 600; margin: 0.75rem 0 0.25rem; }
label.checkbox-item { display: inline-flex; align-items: center; gap: 0.4rem; font-weight: 400; margin: 0.25rem 0; }

input[type=text], input[type=email], input[type=password], input[type=number],
select, textarea {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.92rem;
  font-family: inherit;
}
textarea { min-height: 70px; resize: vertical; }

button, .btn {
  display: inline-block;
  background: var(--navy);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
  margin-top: 1rem;
}
button:hover, .btn:hover { background: var(--navy-dark); text-decoration: none; color: white; }

.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #8f1f19; }

.btn-link {
  background: none; border: none; color: var(--navy); padding: 0; margin: 0;
  font-size: 0.85rem; cursor: pointer; text-decoration: underline;
}

.data-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.data-table th, .data-table td {
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}
.data-table th { background: #f0f2f7; font-weight: 600; position: sticky; top: 0; }
.data-table tbody tr:hover { background: #fafbfd; }

.table-scroll { overflow-x: auto; max-width: 100%; }

.pagination { display: flex; align-items: center; gap: 1rem; padding: 0.75rem 1rem; }

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.25rem 1rem;
  margin: 0.25rem 0 1rem;
}

.filter-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.chart-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
  align-items: end;
}
.chart-controls label { display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.8rem; }