:root {
  color-scheme: light;
  --brand-green: #3a5f3a;
  --brand-green-hover: #2f4e2f;
  --brand-green-soft: #e6efe6;
}

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  margin: 0;
  background: #f8fafc;
  color: #111827;
}

.site-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid #e5e7eb;
  background: #ffffffcc;
  backdrop-filter: saturate(180%) blur(8px);
}

.logo {
  width: 32px;
  height: 32px;
  background: #fff;
  border-radius: 6px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.04);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 12px;
  color: var(--brand-green);
}

.logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.controls-disabled {
  opacity: 0.55;
  filter: blur(0.6px);
  pointer-events: none;
}

.color-pair {
  display: flex;
  gap: 8px;
  align-items: center;
}

.color-pair input[type="text"] {
  width: 120px;
}

.top-nav {
  margin-left: auto;
  display: flex;
  gap: 8px;
  align-items: center;
}

main {
  padding: 24px 16px;
  max-width: 900px;
  margin: 0 auto;
}

footer {
  padding: 16px;
  text-align: center;
  border-top: 1px solid #e5e7eb;
  margin-top: 40px;
}

.card {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 16px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.hint {
  color: #6b7280;
  font-size: 12px;
}

a:not(.btn) {
  color: var(--brand-green);
  text-decoration: none;
}

a:not(.btn):hover {
  text-decoration: underline;
  color: var(--brand-green-hover);
}

.btn {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 6px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font: inherit;
}

.btn-primary {
  background: var(--brand-green);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-green-hover);
  color: #fff;
}

.btn-secondary {
  background: #f3f4f6;
  color: #111827;
  border-color: #e5e7eb;
}

.btn-secondary:hover {
  background: #e5e7eb;
}

.btn:focus-visible {
  outline: 2px solid var(--brand-green);
  outline-offset: 2px;
}

input,
select,
textarea,
button {
  font: inherit;
}

input,
select,
textarea {
  box-sizing: border-box;
}

input[type="text"],
input[type="email"],
input[type="url"],
select,
textarea {
  padding: 8px 10px;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  background: #fff;
}

.row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: end;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: 12px;
  align-items: end;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: end;
}

.form-grid-3 label,
.form-grid-2 label {
  display: block;
  min-width: 0;
}

.auth-form {
  max-width: 720px;
}

.auth-form .form-grid-3,
.auth-form .form-grid-2 {
  margin-bottom: 8px;
}

@media (max-width: 720px) {
  .form-grid-3 {
    grid-template-columns: 1fr;
  }

  .form-grid-2 {
    grid-template-columns: 1fr;
  }
}

pre {
  background: #0b1020;
  color: #d1d5db;
  padding: 12px;
  border-radius: 10px;
  overflow: auto;
}