:root {
  --brand-dark: #305496;
  --brand-light: #eef2f8;
  --text: #1f2933;
  --border: #d9d9d9;
}

* {
  box-sizing: border-box;
}

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

.site-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--brand-dark);
  color: #fff;
  padding: 1rem 1.5rem;
}

.site-header .logo {
  max-height: 48px;
  max-width: 160px;
  object-fit: contain;
  background: #fff;
  border-radius: 4px;
  padding: 4px;
}

.site-header h1 {
  font-size: 1.25rem;
  margin: 0;
}

main {
  max-width: 640px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card h2 {
  margin-top: 0;
  font-size: 1.1rem;
  color: var(--brand-dark);
}

.hint {
  color: #667085;
  font-size: 0.85rem;
}

form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: flex-start;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  width: 100%;
  font-size: 0.9rem;
}

input[type="text"],
input[type="password"] {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 1rem;
}

input[type="file"] {
  font-size: 0.9rem;
}

button {
  background: var(--brand-dark);
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 0.6rem 1.2rem;
  font-size: 0.95rem;
  cursor: pointer;
}

button:hover {
  opacity: 0.9;
}

button.secondary {
  background: #fff;
  color: var(--brand-dark);
  border: 1px solid var(--brand-dark);
}

button.link {
  background: none;
  color: var(--brand-dark);
  text-decoration: underline;
  padding: 0;
}

.logo-preview {
  max-height: 80px;
  max-width: 220px;
  object-fit: contain;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px;
  background: #fff;
}

.logout {
  align-items: flex-end;
}

ul.flashes {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
}

ul.flashes li {
  background: #fff3cd;
  border: 1px solid #ffe69c;
  color: #664d03;
  padding: 0.6rem 0.9rem;
  border-radius: 6px;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}