/* 主题变量 */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f5;
  --bg-tertiary: #e8e8e8;
  --text-primary: #333333;
  --text-secondary: #666666;
  --border-color: #dddddd;
  --accent-color: #4a90e2;
  --scrollbar-thumb: #cccccc;
  --scrollbar-track: #f1f1f1;
}

/* 深色主题 */
.dark-theme {
  --bg-primary: #1a1a1a;
  --bg-secondary: #2a2a2a;
  --bg-tertiary: #333333;
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --border-color: #444444;
  --accent-color: #5c9cf5;
  --scrollbar-thumb: #444444;
  --scrollbar-track: #2a2a2a;
}

/* 基础样式 */
body {
  margin: 0;
  min-height: 100vh;
  overflow: hidden;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: Arial, sans-serif;
}

.container {
  display: flex;
  height: 100vh;
}

/* 画布容器 */
#canvasContainer {
  position: relative;
  flex: 1;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  box-sizing: border-box;
}

#canvas {
  border: 2px solid var(--border-color);
  background: var(--bg-primary);
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

/* 侧边栏 */
.sidebar {
  width: 360px;
  background: var(--bg-secondary);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-header {
  padding: 15px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-header h1 {
  margin: 0;
  font-size: 1.2em;
  color: var(--text-primary);
}

/* 主题切换按钮 */
.theme-toggle {
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  transition: background-color 0.3s;
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
}

.theme-icon {
  font-size: 1.2em;
}

/* 区块样式 */
.section {
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  padding: 12px 15px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--bg-secondary);
}

.section-header h2 {
  margin: 0;
  font-size: 1em;
}

.toggle-btn {
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 4px 8px;
  transition: transform 0.3s;
  transform: rotate(0deg);
}

.toggle-btn.expanded {
  transform: rotate(180deg);
}

.section-content {
  padding: 15px;
  background: var(--bg-tertiary);
}

/* 配置域 */
.config-section {
  flex-shrink: 0;
}

.config-item {
  margin: 8px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.config-item input {
  width: 80px;
  padding: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: 3px;
}

.config-item label {
  margin-right: 10px;
  color: var(--text-secondary);
}

/* 图片库区域 */
.gallery-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.gallery-buttons {
  display: flex;
  width: 100%;
  gap: 8px;
}

.gallery-buttons button {
  flex: 1;
  white-space: nowrap;
  padding: 6px 8px;
  font-size: 0.8em;
}

.image-list {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  padding: 10px;
  box-sizing: border-box;
  border: 2px dashed transparent;
  transition: border-color 0.3s;
  width: 100%;
  position: relative;
}

.image-list:empty::before {
  content: "拖放图片到这里\A或点击上方按钮上传";
  white-space: pre;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--text-secondary);
  text-align: center;
  font-size: 0.9em;
  pointer-events: none;
  background: var(--bg-secondary);
  border: 2px dashed var(--border-color);
  width: calc(100% - 4px);
  height: calc(100% - 4px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.image-list.dragover:empty::before {
  border-color: transparent;
  color: var(--accent-color);
}

/* 自定义滚动条 */
.custom-scrollbar {
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

.custom-scrollbar::-webkit-scrollbar {
  width: 8px;
}

.custom-scrollbar::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

.custom-scrollbar::-webkit-scrollbar-thumb {
  background-color: var(--scrollbar-thumb);
  border-radius: 4px;
  border: 2px solid var(--scrollbar-track);
}

.image-list.dragover {
  border-color: var(--accent-color);
}

/* 图片项 */
.image-item-container {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
}

.image-item {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: move;
  border: 2px solid var(--border-color);
  border-radius: 4px;
  transition: transform 0.2s;
}

.image-item:hover {
  transform: scale(1.05);
  border-color: var(--accent-color);
}

.delete-button {
  position: absolute;
  top: 5px;
  right: 5px;
  background: rgba(255, 0, 0, 0.7);
  color: white;
  border: none;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  cursor: pointer;
  display: none;
  padding: 0;
  line-height: 24px;
  font-size: 14px;
}

.image-item-container:hover .delete-button {
  display: block;
}

#imageUpload {
  display: none;
}

/* 按钮样式 */
button {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
}

button:hover {
  background: var(--accent-color);
  color: white;
}

/* 图片编辑器 */
#imageEditor {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--bg-secondary);
  padding: 20px;
  border-radius: 8px;
  z-index: 1000;
}

.overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: 999;
}

/* 危险按钮样式 */
.danger-btn {
  background: var(--bg-tertiary);
  color: #ff4d4d;
  border: 1px solid #ff4d4d;
}

.danger-btn:hover {
  background: #ff4d4d;
  color: white;
  border-color: #ff4d4d;
}

.hidden {
  display: none !important;
}

/* 确认对话框样式 */
.confirm-dialog {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.confirm-content {
  background: var(--bg-secondary);
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
  max-width: 400px;
  width: 90%;
  transform: translateY(-20px);
  opacity: 0;
  transition: transform 0.3s, opacity 0.3s;
}

.confirm-dialog.active .confirm-content {
  transform: translateY(0);
  opacity: 1;
}

.confirm-message {
  color: var(--text-primary);
  font-size: 1.1em;
  margin-bottom: 20px;
  line-height: 1.5;
}

.confirm-buttons {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.confirm-buttons button {
  min-width: 80px;
  padding: 8px 16px;
}

.confirm-buttons .confirm-btn {
  background: var(--accent-color);
  color: white;
  border: none;
}

.confirm-buttons .confirm-btn:hover {
  background: var(--accent-color);
  filter: brightness(1.1);
}

.confirm-buttons .cancel-btn {
  background: transparent;
  border: 1px solid var(--border-color);
}

.confirm-buttons .cancel-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

/* 侧边栏底部 */
.sidebar-footer {
  padding: 12px 15px;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
  font-size: 0.9em;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--bg-secondary);
}

.github-link {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--text-primary);
  text-decoration: none;
  padding: 4px;
  border-radius: 4px;
  transition: background-color 0.2s;
  flex-shrink: 0;
}

.github-link:hover {
  background: var(--bg-tertiary);
}

.github-link svg {
  width: 20px;
  height: 20px;
  transition: transform 0.2s;
}

.github-link:hover svg {
  transform: scale(1.1);
}

.copyright {
  font-size: 0.8em;
  opacity: 0.6;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 移动端提示 */
.mobile-notice {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  z-index: 9999;
  padding: 20px;
  box-sizing: border-box;
  text-align: center;
}

.notice-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  max-width: 400px;
  padding: 30px;
  background: var(--bg-secondary);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.notice-content h2 {
  margin: 0 0 16px;
  font-size: 1.5em;
  color: var(--text-primary);
}

.notice-content p {
  margin: 0 0 24px;
  color: var(--text-secondary);
  font-size: 1.1em;
}

.notice-button {
  display: inline-block;
  padding: 12px 24px;
  background: var(--accent-color);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1.1em;
  cursor: pointer;
  transition: transform 0.2s, background-color 0.2s;
}

.notice-button:hover {
  transform: translateY(-2px);
  background: var(--accent-color);
  filter: brightness(1.1);
}

.notice-button:active {
  transform: translateY(0);
}

.notice-button.copied {
  background: #4caf50;
}

/* 响应式显示规则 */
@media (max-width: 768px) {
  .mobile-notice {
    display: block;
  }

  .pc-only {
    display: none !important;
  }
}

/* 重新绘制按钮 */
.redraw-button {
  display: block;
  width: calc(100% - 30px);
  margin: 15px;
  padding: 12px;
  background: var(--accent-color);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1em;
  cursor: pointer;
  transition: transform 0.2s, background-color 0.2s;
}

.redraw-button:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.redraw-button:active {
  transform: translateY(0);
}

/* 禁用状态样式 */
.config-item input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background: var(--bg-tertiary);
}

.config-section.disabled {
  pointer-events: none;
  opacity: 0.7;
}

.config-section.disabled input {
  background: var(--bg-tertiary);
}

/* 配置域 */
.config-section .section-header {
  flex-direction: row;
  align-items: center;
}

.config-section .section-header h2 {
  flex: 1;
}