.flash.success { background: #e6ffed; padding: .6rem; border-left: 4px solid #28a745; }
.flash.warning { background: #fff9e6; padding: .6rem; border-left: 4px solid #ff9800; }
.flash.danger  { background: #ffe6e6; padding: .6rem; border-left: 4px solid #e53935; }
.flash.info    { background: #e6f0ff; padding: .6rem; border-left: 4px solid #3f51b5; }

:root {
  --brand: #081936;
  --brand-text: #ffffff;
}

header.site-header {
  background: var(--brand);
  color: var(--brand-text);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  padding: 0.75rem 1.5rem;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--brand-text);
}

.brand img {
  height: 48px;
  width: auto;
}

.brand-title {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.5px;
}

.nav a {
  color: var(--brand-text);
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  transition: background 0.2s ease;
}

.nav a:hover {
  background: rgba(255, 255, 255, 0.15);
}

@media (min-width: 1100px) {
  .header-inner {
    max-width: 1100px;
    margin: 0 auto;
  }
}