body {
  padding-bottom: 0;
  background: radial-gradient(circle at 20% 20%, rgba(52, 152, 219, 0.12), transparent 30%),
              radial-gradient(circle at 80% 0%, rgba(40, 180, 99, 0.12), transparent 28%),
              #f7f9fb;
  color: #1f2a3d;
}
html, body {
  height: 100%;
}

.card {
  border: 1px solid #e1e7ef;
  box-shadow: 0 10px 25px -18px rgba(15, 23, 42, 0.25);
}

.navbar-dark {
  background: linear-gradient(120deg, #1f3b73, #16294f);
}

.btn-outline-light {
  border-color: rgba(255,255,255,0.5);
}

.navbar .btn-sm,
.navbar form button.btn-sm {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
}
.navbar-brand {
  font-weight: 700;
}
.brand-logo {
  height: 36px;
  width: auto;
  object-fit: contain;
}
.brand-text {
  font-weight: 700;
  color: #fff;
}
.app-main {
  flex: 1 0 auto;
}
.page-footer {
  flex-shrink: 0;
}

.price { font-variant-numeric: tabular-nums; }
.muted { color: #6c757d; }

.table thead th {
  border-bottom-width: 2px;
  color: #4a5568;
}

.form-label {
  font-weight: 600;
  color: #2d3748;
}

.badge {
  letter-spacing: 0.2px;
}

.list-group-item {
  border-color: #e7edf5;
}

.accordion-button {
  font-weight: 600;
  color: #1f2a3d;
}

.accordion-button:not(.collapsed) {
  background-color: #eef3fb;
  color: #1a2c4e;
}

footer {
  background: #f0f3f8;
}

@media (max-width: 576px) {
  .navbar .btn-sm {
    padding: 6px 10px;
    font-size: 0.9rem;
  }
  .navbar-brand span {
    font-size: 1rem;
  }
}