:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #e5e7eb;
  --text: #111827;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-600: #1d4ed8;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  color: var(--primary-600);
}

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

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page-header {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
}

.section-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

.card-slim {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  height: 100%;
}

.card-slim h5 {
  font-size: 16px;
  margin-bottom: 8px;
}

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

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  border-radius: 8px;
  padding: 8px 16px;
  font-weight: 600;
}

.btn-primary:hover {
  background: var(--primary-600);
  border-color: var(--primary-600);
}

.btn-outline-primary {
  border-radius: 8px;
  font-weight: 600;
}

.badge-status {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--border);
  background: #f9fafb;
  color: var(--text);
}

.badge-status.pending {
  color: var(--warning);
  border-color: rgba(217, 119, 6, 0.3);
  background: rgba(217, 119, 6, 0.08);
}

.badge-status.review {
  color: #0f766e;
  border-color: rgba(15, 118, 110, 0.3);
  background: rgba(15, 118, 110, 0.08);
}

.badge-status.approved {
  color: var(--success);
  border-color: rgba(22, 163, 74, 0.3);
  background: rgba(22, 163, 74, 0.08);
}

.badge-status.rejected {
  color: var(--danger);
  border-color: rgba(220, 38, 38, 0.3);
  background: rgba(220, 38, 38, 0.08);
}

.form-control,
.form-select {
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 10px 12px;
  font-size: 14px;
}

.form-control:focus,
.form-select:focus {
  border-color: rgba(37, 99, 235, 0.5);
  box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.15);
}

.table thead th {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}

.table tbody td {
  vertical-align: middle;
}

.footer {
  margin-top: auto;
  padding: 24px 0 32px;
  color: var(--muted);
  font-size: 13px;
}

.alert {
  border-radius: 10px;
  border: 1px solid var(--border);
}

.status-panel {
  background: #f9fafb;
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 16px;
}

.copy-btn {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 13px;
}

.copy-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}