*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #f5f5f7;
  color: #1d1d1f;
  min-height: 100vh;
}

.layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  min-height: 100vh;
}

.panel {
  background: #fff;
  padding: 2rem;
  border-right: 1px solid #e0e0e0;
  overflow-y: auto;
}

.preview-panel {
  padding: 2rem;
  background: #f5f5f7;
}

h1 { font-size: 1.4rem; font-weight: 600; margin-bottom: 1.5rem; color: #1d1d1f; }
h2 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; }

label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
  font-weight: 500;
  color: #555;
  margin-bottom: 1rem;
}

input[type="text"], input[type="email"], input[type="tel"],
input[type="url"], input[type="password"], textarea {
  border: 1px solid #d0d0d0;
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 0.95rem;
  width: 100%;
  transition: border-color 0.15s;
}
input:focus, textarea:focus { outline: none; border-color: #0066cc; }

input[type="color"] {
  height: 36px;
  width: 60px;
  border: 1px solid #d0d0d0;
  border-radius: 6px;
  padding: 2px;
  cursor: pointer;
}

input[type="checkbox"] {
  width: auto;
  margin-right: 6px;
}
label:has(input[type="checkbox"]) {
  flex-direction: row;
  align-items: center;
  font-weight: 400;
}

fieldset {
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
}
legend {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #888;
  padding: 0 6px;
}

button {
  background: #0066cc;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 10px 18px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}
button:hover { background: #0055aa; }
button.secondary {
  background: #fff;
  color: #0066cc;
  border: 1px solid #0066cc;
}
button.secondary:hover { background: #f0f6ff; }

.hint { font-size: 0.8rem; color: #888; margin-bottom: 1rem; }

.copy-area {
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 10px;
  padding: 1.5rem;
  margin-top: 1rem;
}

#copy-btn {
  margin-top: 1.5rem;
  width: 100%;
  font-size: 1rem;
  padding: 12px;
}

.instructions {
  margin-top: 1rem;
  font-size: 0.82rem;
  color: #666;
  line-height: 1.6;
  background: #f0f6ff;
  border-radius: 6px;
  padding: 0.75rem 1rem;
}
.instructions strong { color: #0066cc; }

.success { color: #1a8a1a; }
.error { color: #cc0000; }
.hidden { display: none !important; }

#copy-feedback {
  text-align: center;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  min-height: 1.2em;
}

#logo-preview-wrap { margin-bottom: 0.75rem; min-height: 40px; }
#logo-preview { max-height: 60px; border-radius: 4px; }
#logo-none { font-size: 0.85rem; color: #aaa; }
#save-btn { width: 100%; }
#save-status { margin-top: 0.5rem; font-size: 0.85rem; }
#auth-gate { margin-bottom: 1.5rem; }
#auth-gate label { margin-bottom: 0.5rem; }
#unlock-btn { margin-top: 0.5rem; }
#auth-error { margin-top: 0.5rem; font-size: 0.85rem; }
#logo-upload { display: none; }
#logo-upload-btn { font-size: 0.85rem; padding: 6px 12px; }

.form-row { margin-bottom: 0.75rem; }
.form-row label { margin-bottom: 0; }
.toggle-label {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: #888;
  margin-top: 4px;
  font-weight: 400;
}
.toggle-label input[type="checkbox"] { width: auto; }
.toggle-only { padding: 6px 0; }