/* Turn Images into Unicode Tool Styles */

.tool-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.tool-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tool-description {
  font-size: 1.125rem;
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
}

.tool-container {
  max-width: 1200px;
  margin: 0 auto;
}

.tool-columns {
  display: flex;
  flex-direction: row-reverse;
  gap: var(--space-8);
  align-items: stretch; /* 改为stretch确保等高 */
  margin-bottom: var(--space-8);
  min-height: 600px; /* 设置最小高度 */
}

/* Upload Section */
.upload-section {
  flex: 3;
  min-width: 0;
  align-self: stretch; /* 确保高度撑满 */
}

#uploadArea .empty-state { display: block; }
#uploadArea .result-state { display: none; }
#uploadArea.has-image .empty-state { display: none; }
#uploadArea.has-image .result-state { display: block; }

/* Prevent overflow of inner content */
#uploadArea {
  overflow: hidden;
  max-width: 100%;
  box-sizing: border-box;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-6);
  max-width: 100%;
  min-height: 500px; /* 确保网格有足够高度 */
}

.content-pane {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  min-height: 500px; /* 增加最小高度 */
  box-sizing: border-box;
  max-width: 100%;
  overflow: visible; /* 改为可见，允许内容扩展 */
  display: flex;
  flex-direction: column;
}

.image-preview {
  max-width: 100%;
  height: auto;
  display: block;
}

/* image-info and output-info removed per design */

.output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
}

.#unicodePane {
  display: flex;
  flex-direction: column;
  height: 100%; /* 确保容器撑满高度 */
  min-height: 400px; /* 设置最小高度 */
  max-height: none; /* 移除最大高度限制 */
  overflow: visible; /* 允许内容溢出 */
}

#unicodePane .output-header {
  margin-bottom: var(--space-3);
}

.output-title {
  font-size: 1rem;
  color: var(--gray-800);
}

.unicode-output {
  white-space: pre;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 12px;
  line-height: 1.1;
  overflow: auto;
  max-height: none;
  min-height: 0;
  color: var(--gray-900);
  max-width: 100%;
  flex: 1;
  width: 100%;
  box-sizing: border-box;
  word-break: break-all; /* 允许字符换行 */
  word-wrap: break-word; /* 确保长文本换行 */
  display: block; /* 确保是块级元素 */
}

/* Controls Section */
.controls-section {
  flex: 0.6667;
  min-width: 0;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  margin-bottom: var(--space-8);
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  overflow: hidden;
  align-self: flex-start; /* 防止控件区域过高 */
}

.upload-area {
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius-xl);
  padding: var(--space-12);
  text-align: center;
  background: var(--white);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.upload-area:hover {
  border-color: var(--primary-blue-light);
  background: var(--gray-50);
}

.upload-area.dragover {
  border-color: var(--primary-blue);
  background: var(--gray-100);
  transform: scale(1.02);
}

.upload-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-6);
  color: var(--gray-400);
  display: flex;
  align-items: center;
  justify-content: center;
}

.upload-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-3);
}

.upload-text {
  font-size: 1rem;
  color: var(--gray-600);
  margin-bottom: var(--space-2);
}

.upload-hint {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: var(--space-6);
}

.upload-btn {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  color: var(--white);
  border: none;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.upload-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Controls Section - Controls are styled in the main layout section above */

.control-group {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  align-items: center;
  row-gap: var(--space-3);
}

.control-group:last-child { }

.control-label {
  font-weight: 500;
  color: var(--gray-700);
  font-size: 0.875rem;
  grid-column: 1;
  grid-row: 1;
}

.slider {
  grid-column: 1 / span 2;
  grid-row: 2;
  height: 4px;
  background: var(--gray-200);
  border-radius: 3px;
  outline: none;
  -webkit-appearance: none;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--primary-blue);
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
  background: var(--primary-blue-dark);
  transform: scale(1.1);
}

.slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--primary-blue);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
}

.control-value {
  font-weight: 600;
  color: var(--primary-blue);
  font-size: 0.875rem;
  min-width: 40px;
  text-align: right;
  grid-column: 2;
  grid-row: 1;
  justify-self: end;
}

.select {
  grid-column: 1 / span 2;
  grid-row: 2;
  padding: var(--space-2) var(--space-2);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  background: var(--white);
  color: var(--gray-700);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.select:focus {
  outline: none;
  border-color: var(--primary-blue-light);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.convert-btn {
  grid-column: 1 / -1;
  width: 100%;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  color: var(--white);
  border: none;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-top: var(--space-2);
  max-width: 100%;
  box-sizing: border-box;
  justify-self: stretch;
}

.convert-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  background: var(--primary-blue-dark);
}
.convert-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

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

/* Result Section */
.result-section {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
}

.result-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
}

.result-actions {
  display: flex;
  gap: var(--space-3);
}

.result-actions #copyBtn.action-btn { display: none; }

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  background: var(--gray-100);
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  max-width: 100%;
  box-sizing: border-box;
}

.action-btn:hover {
  background: var(--gray-200);
  color: var(--gray-900);
}
.action-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Primary/Secondary mapping for result actions */
#downloadBtn.action-btn {
  background: var(--primary-blue);
  color: var(--white);
  border: none;
}
#downloadBtn.action-btn:hover {
  background: var(--primary-blue-dark);
}

.result-content {
  margin-bottom: var(--space-8);
}

.unicode-output {
  background: var(--gray-900);
  color: var(--gray-100);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  font-family: 'Courier New', monospace;
  font-size: 0.75rem;
  line-height: 1.2;
  overflow-x: auto;
  white-space: pre;
  max-height: 400px;
  overflow-y: auto;
  border: 1px solid var(--gray-700);
}

.preview-section {
  border-top: 1px solid var(--gray-200);
  padding-top: var(--space-6);
}

.preview-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

.preview-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: start;
}

.preview-canvas {
  width: 100%;
  max-width: 300px;
  height: auto;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  background: var(--gray-50);
}

.unicode-preview {
  background: var(--gray-900);
  color: var(--gray-100);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-family: 'Courier New', monospace;
  font-size: 0.6rem;
  line-height: 1.1;
  white-space: pre;
  overflow: auto;
  max-height: 300px;
  border: 1px solid var(--gray-700);
}

/* Responsive Design */
@media (max-width: 768px) {
  .tool-title {
    font-size: 1.875rem;
  }
  
  .tool-container {
    padding: 0 var(--space-4);
  }
  
  .tool-columns {
    flex-direction: column-reverse;
  }
  
  .upload-section,
  .controls-section {
    width: 100%;
  }
  
  .upload-area {
    padding: var(--space-8);
  }
  
  .controls-section {
    padding: var(--space-6);
  }
  
  .control-group {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
  }
  
  .control-label {
    min-width: auto;
  }
  
  .control-value {
    text-align: left;
  }
  
  .preview-container {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .unicode-output {
    font-size: 0.625rem;
    padding: var(--space-4);
  }
  
  .unicode-preview {
    font-size: 0.5rem;
  }
}

@media (max-width: 480px) {
  .tool-title {
    font-size: 1.5rem;
  }
  
  .upload-area {
    padding: var(--space-6);
  }
  
  .controls-section,
  .result-section {
    padding: var(--space-4);
  }
  
  .result-header {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-4);
  }
  
  .result-actions {
    justify-content: center;
  }
}
#imagePane,
#unicodePane {
  height: var(--pane-h, 300px);
  min-height: var(--pane-h, 300px);
}

.image-preview {
  width: 100%;
  height: 100%;
  object-fit: contain;
}