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

body {
  background: #121212;
  color: #d1d5db;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 40px 16px;
}

.container {
  background: #1a1a1a;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  max-width: 800px;
  width: 100%;
  padding: 32px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
}

h1 {
  color: #fff;
  font-size: 24px;
  margin-bottom: 4px;
}

.subtitle {
  color: #40B5AD;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 32px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 600px) {
  .form-grid { grid-template-columns: 1fr; }
  .desc-section { grid-template-columns: 1fr !important; }
  .field-row { grid-template-columns: 1fr !important; }
}

.file-upload {
  border: 2px dashed rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  position: relative;
}

.file-upload:hover {
  border-color: rgba(64, 181, 173, 0.4);
  background: rgba(64, 181, 173, 0.05);
}

.file-upload .icon {
  font-size: 32px;
  margin-bottom: 8px;
}

.file-upload .label {
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 200px;
  margin: 0 auto;
}

.file-upload .selected {
  color: #40B5AD;
}

.file-upload .placeholder {
  color: #9ca3af;
}

.file-upload input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 20px;
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.field input,
.field textarea {
  width: 100%;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 12px 16px;
  color: #fff;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.field input:focus,
.field textarea:focus {
  border-color: #40B5AD;
}

.field textarea {
  resize: vertical;
  min-height: 120px;
  font-family: monospace;
}

.label-preview {
  font-size: 11px;
  font-weight: 700;
  color: #40B5AD;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
  display: block;
}

.desc-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.preview-pane {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 12px;
  min-height: 120px;
  overflow-y: auto;
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-word;
  color: #9ca3af;
}

.tags-section {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  margin-top: 24px;
}

.tags-title {
  font-size: 12px;
  font-weight: 700;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.tag-group {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
}

.tag-group legend {
  color: #40B5AD;
  font-size: 12px;
  font-weight: 600;
  padding: 0 8px;
}

.sub-cat {
  margin-bottom: 12px;
}

.tag-parent {
  margin-bottom: 4px;
  font-weight: 600 !important;
  color: #d1d5db !important;
}

.sub-tags {
  margin-left: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.tag-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: #9ca3af;
  cursor: pointer;
  padding: 4px 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  transition: all 0.2s;
  user-select: none;
}

.tag-checkbox:hover {
  border-color: rgba(255, 255, 255, 0.3);
}

.tag-checkbox:has(input:checked) {
  background: #40B5AD;
  color: #000;
  border-color: #40B5AD;
}

.tag-checkbox input[type="checkbox"] {
  display: none;
}

.submit-btn {
  width: 100%;
  background: #40B5AD;
  color: #000;
  border: none;
  border-radius: 16px;
  padding: 16px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  margin-top: 24px;
  transition: filter 0.2s, transform 0.2s;
}

.submit-btn:hover {
  filter: brightness(1.1);
}

.submit-btn:active {
  transform: scale(0.98);
}

.submit-btn:disabled {
  opacity: 0.2;
  filter: grayscale(1);
  cursor: not-allowed;
}

.loading {
  text-align: center;
  padding: 40px;
  display: none;
}

.loading .spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: #40B5AD;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

.loading p {
  color: #9ca3af;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

#result {
  margin-top: 24px;
  padding: 16px;
  border-radius: 12px;
  display: none;
}

#result.success {
  display: block;
  background: rgba(64, 181, 173, 0.1);
  border: 1px solid rgba(64, 181, 173, 0.2);
}

#result.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #fca5a5;
}

#result a {
  color: #40B5AD;
}