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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  color: #24292e;
  background: #fff;
}

header {
  background: #24292e;
  color: #fff;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header h1 {
  font-size: 1.25rem;
  font-weight: 600;
}

header nav a {
  color: #79b8ff;
  text-decoration: none;
  margin-left: 20px;
  font-size: 0.9rem;
}

header nav a:hover { text-decoration: underline; }

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 24px;
}

/* Generator */
.generator {
  background: #f6f8fa;
  border: 1px solid #e1e4e8;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 40px;
}

.generator h2 {
  font-size: 1.1rem;
  margin-bottom: 16px;
}

.form-row {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: #586069;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group select,
.form-group input {
  padding: 8px 12px;
  border: 1px solid #d1d5da;
  border-radius: 6px;
  font-size: 0.95rem;
  background: #fff;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: #0366d6;
  box-shadow: 0 0 0 3px rgba(3, 102, 214, 0.15);
}

.form-group.grow { flex: 1; min-width: 180px; }

.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: #24292e;
  cursor: pointer;
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: #2ea44f;
  cursor: pointer;
}

.advanced-toggle {
  background: none;
  border: none;
  color: #0366d6;
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0;
  margin-bottom: 12px;
}

.advanced-toggle:hover { text-decoration: underline; }

.advanced { display: none; }
.advanced.open { display: flex; }

.btn {
  padding: 8px 20px;
  background: #2ea44f;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  align-self: flex-end;
}

.btn:hover { background: #2c974b; }

.preview {
  margin-top: 20px;
  text-align: center;
  display: none;
}

.preview.visible { display: block; }

.preview img {
  max-width: 100%;
  border: 1px solid #e1e4e8;
  border-radius: 6px;
  background: #fff;
}

.preview-actions {
  margin-top: 12px;
  display: flex;
  justify-content: center;
  gap: 16px;
}

.preview-actions a {
  color: #0366d6;
  text-decoration: none;
  font-size: 0.9rem;
}

.preview-actions a:hover { text-decoration: underline; }

.type-hint {
  font-size: 0.85rem;
  color: #586069;
  margin-top: 2px;
  display: none;
}

.type-hint.visible { display: block; }

.form-group input.invalid {
  border-color: #cb2431;
  box-shadow: 0 0 0 3px rgba(203, 36, 49, 0.12);
}

.error-msg {
  color: #cb2431;
  font-size: 0.9rem;
  margin-top: 8px;
  display: none;
}

.error-msg.visible { display: block; }

/* Batch PDF generator */
.batch-generator h2 { border-bottom: none; margin: 0 0 4px; padding: 0; }

.batch-desc {
  color: #586069;
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.batch-settings {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.batch-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.batch-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto auto;
  gap: 4px 8px;
  align-items: center;
  padding: 10px 12px;
  background: #fff;
  border: 1px solid #d1d5da;
  border-radius: 6px;
}

.batch-item select {
  grid-column: 1;
  grid-row: 1;
  padding: 6px 10px;
  border: 1px solid #d1d5da;
  border-radius: 6px;
  font-size: 0.9rem;
  background: #fff;
}

.batch-item input {
  grid-column: 2;
  grid-row: 1;
  padding: 6px 10px;
  border: 1px solid #d1d5da;
  border-radius: 6px;
  font-size: 0.9rem;
  min-width: 0;
}

.batch-item input:focus,
.batch-item select:focus {
  outline: none;
  border-color: #0366d6;
  box-shadow: 0 0 0 3px rgba(3, 102, 214, 0.15);
}

.batch-item input.invalid {
  border-color: #cb2431;
  box-shadow: 0 0 0 3px rgba(203, 36, 49, 0.12);
}

.batch-item-remove {
  grid-column: 3;
  grid-row: 1;
  background: none;
  border: none;
  font-size: 1.2rem;
  color: #959da5;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  line-height: 1;
}

.batch-item-remove:hover { color: #cb2431; background: #ffeef0; }

.batch-item-hint {
  grid-column: 1 / -1;
  grid-row: 2;
  font-size: 0.8rem;
  color: #586069;
}

.batch-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.btn-outline {
  background: #fff;
  color: #0366d6;
  border: 1px solid #0366d6;
}

.btn-outline:hover { background: #f1f8ff; }

.btn-zpl {
  background: #0366d6;
}

.btn-zpl:hover { background: #0256b9; }

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.batch-status {
  font-size: 0.9rem;
  color: #2ea44f;
  margin-top: 8px;
  display: none;
}

.batch-status.visible { display: block; }

/* Docs */
h2 { font-size: 1.3rem; margin: 32px 0 12px; border-bottom: 1px solid #eaecef; padding-bottom: 8px; }
h3 { font-size: 1.1rem; margin: 20px 0 8px; }
p { margin: 8px 0; }

pre {
  background: #f6f8fa;
  padding: 16px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.88rem;
  line-height: 1.5;
  margin: 12px 0;
}

code {
  background: #f6f8fa;
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.88rem;
}

pre code { background: none; padding: 0; }

table {
  border-collapse: collapse;
  width: 100%;
  margin: 12px 0;
  font-size: 0.9rem;
}

th, td {
  border: 1px solid #e1e4e8;
  padding: 8px 12px;
  text-align: left;
}

th { background: #f6f8fa; font-weight: 600; }

.type-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 8px 0;
}

.type-list code {
  background: #eff3f6;
  border: 1px solid #d1d5da;
}