:root {
  --bg: #0b1220;
  --surface: #ffffff;
  --surface-2: #f4f7fb;
  --border: #d8e0ea;
  --text: #0f172a;
  --muted: #475569;
  --primary: #1d4ed8;
  --success: #15803d;
  --danger: #b91c1c;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: Inter, Arial, Helvetica, sans-serif;
  background: var(--surface-2);
  color: var(--text);
}

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

.page-shell {
  min-height: 100vh;
}

.topbar {
  background: var(--bg);
  color: white;
  border-bottom: 1px solid #1f2937;
}

.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 700;
  font-size: 1.1rem;
}

.subtitle {
  color: #cbd5e1;
  font-size: 0.9rem;
}

.nav-links {
  display: flex;
  gap: 1rem;
}

.nav-links a {
  color: #e2e8f0;
}

.content-shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
}

.section-card h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 600;
}

.form-control, .form-select {
  width: 100%;
  box-sizing: border-box;
  padding: 0.72rem 0.85rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: white;
  font-size: 0.98rem;
}

.required {
  color: var(--danger);
  margin-left: 0.2rem;
}

.btn {
  display: inline-block;
  border: none;
  border-radius: 10px;
  padding: 0.75rem 1rem;
  font-weight: 600;
  cursor: pointer;
}

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

.btn-success {
  background: var(--success);
  color: white;
}

.alert {
  border-radius: 10px;
  padding: 0.9rem 1rem;
  margin-bottom: 1rem;
}

.alert-success {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
}

.alert-danger {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

.mt-2 {
  margin-top: 0.75rem;
}

.sandoz-btn {
    background-color: #2d63d7;
    border-color: #2d63d7;
    color: white;
    border-radius: 12px;
    font-weight: 600;
    padding: 0.6rem 1.5rem;
}

.sandoz-btn:hover {
    background-color: #1f4fb8;
    border-color: #1f4fb8;
    color: white;
}