styles.css

/* ========================================================================
   可视化拼图编辑器 - 样式表
   用途：主界面布局、组件样式、画布网格、交互反馈
   ======================================================================== */

/* ==================== 全局 / 基础重置 ==================== */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  overflow: hidden; height: 100vh; background: #f0f2f5;
}
#app { display: flex; flex-direction: column; height: 100vh; }

/* ==================== 顶部工具栏 ==================== */
.toolbar-btn {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 5px 10px; border-radius: 6px; font-size: 12px; font-weight: 500;
  color: #4b5563; background: transparent; border: none; cursor: pointer;
  transition: all .12s; white-space: nowrap;
}
.toolbar-btn:hover { background: #f3f4f6; color: #1f2937; }
.toolbar-btn:active { transform: scale(0.96); }
.toolbar-btn svg { flex-shrink: 0; }

/* ==================== 左侧面板 ==================== */
.left-panel {
  width: 240px; min-width: 240px; background: #fff;
  border-right: 1px solid #e5e7eb; display: flex; flex-direction: column;
  overflow: hidden;
}
.panel-section { padding: 14px 12px; }
.panel-section h3 { font-size: 13px; font-weight: 600; color: #374151; margin-bottom: 10px; }

/* —— 模板网格 —— */
.template-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.template-item {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 11px 4px 9px; border: 1px solid #e5e7eb; border-radius: 8px;
  cursor: pointer; transition: all .15s; font-size: 11px; color: #4b5563;
  user-select: none;
}
.template-item:hover {
  border-color: #3b82f6; background: #eff6ff; color: #2563eb;
  transform: translateY(-1px); box-shadow: 0 2px 8px rgba(59,130,246,.15);
}
.template-item .icon { font-size: 22px; line-height: 1; }

/* —— 侧边栏 Tab 切换 —— */
.sidebar-tabs {
  display: flex; border-bottom: 1px solid #e5e7eb;
  background: #f9fafb;
}
.sidebar-tab {
  flex: 1; padding: 8px 0; border: none; background: transparent;
  font-size: 12px; font-weight: 500; color: #6b7280;
  cursor: pointer; transition: all .12s;
  border-bottom: 2px solid transparent;
}
.sidebar-tab:hover { background: #f3f4f6; color: #1f2937; }
.sidebar-tab.active {
  color: #2563eb; background: #fff;
  border-bottom-color: #2563eb; font-weight: 600;
}

/* —— 布局模板库 —— */
.template-library {
  display: flex; flex-direction: column; gap: 8px;
  max-height: 360px; overflow-y: auto;
}
.tpl-card {
  padding: 10px 12px; border: 1px solid #e5e7eb; border-radius: 8px;
  cursor: pointer; transition: all .15s; background: #fff;
  display: flex; align-items: center; gap: 10px;
}
.tpl-card:hover {
  border-color: #3b82f6; background: #eff6ff;
  transform: translateY(-1px); box-shadow: 0 2px 8px rgba(59,130,246,.15);
}
.tpl-thumb {
  font-size: 22px; line-height: 1;
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  background: #f3f4f6; border-radius: 6px; flex-shrink: 0;
}
.tpl-name { font-size: 12px; font-weight: 600; color: #1f2937; margin-bottom: 2px; }
.tpl-desc { font-size: 10px; color: #9ca3af; line-height: 1.3; }

/* —— AI 占位面板 —— */
.ai-panel-placeholder {
  border: 1px dashed #d1d5db; border-radius: 8px; background: #fafafa;
}

/* —— AI 输入面板 —— */
.ai-field { margin-bottom: 10px; }
.ai-field label {
  display: block; font-size: 11px; font-weight: 600; color: #6b7280;
  margin-bottom: 4px; text-transform: uppercase; letter-spacing: .3px;
}
.ai-input, .ai-select, .ai-textarea {
  width: 100%; padding: 6px 8px; font-size: 12px;
  border: 1px solid #d1d5db; border-radius: 6px;
  font-family: inherit; color: #1f2937; background: #fff;
  transition: border-color .15s;
}
.ai-input:focus, .ai-select:focus, .ai-textarea:focus {
  outline: none; border-color: #3b82f6; box-shadow: 0 0 0 2px rgba(59,130,246,.15);
}
.ai-textarea { resize: vertical; min-height: 70px; font-family: inherit; }
.ai-key-actions { display: flex; gap: 6px; margin-top: 6px; }
.ai-mini-btn {
  padding: 4px 10px; font-size: 11px; border: 1px solid #d1d5db;
  background: #fff; color: #4b5563; border-radius: 4px; cursor: pointer;
  transition: all .12s;
}
.ai-mini-btn:hover { background: #f3f4f6; border-color: #9ca3af; }
.ai-hint {
  font-size: 10px; color: #9ca3af; margin-top: 4px; line-height: 1.4;
}
.ai-generate-btn {
  width: 100%; padding: 8px 12px; font-size: 13px; font-weight: 600;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff; border: none; border-radius: 6px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 6px;
  transition: all .15s;
}
.ai-generate-btn:hover:not(:disabled) {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  transform: translateY(-1px); box-shadow: 0 2px 8px rgba(99,102,241,.3);
}
.ai-generate-btn:disabled { opacity: .6; cursor: not-allowed; }
.ai-spinner {
  width: 14px; height: 14px; border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff; border-radius: 50%;
  animation: ai-spin .7s linear infinite;
}
@keyframes ai-spin { to { transform: rotate(360deg); } }
.ai-status {
  margin-top: 8px; padding: 8px 10px; font-size: 11px; border-radius: 6px;
  line-height: 1.5;
}
.ai-status.error { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }
.ai-status.info { background: #eff6ff; color: #1d4ed8; border: 1px solid #dbeafe; }
.ai-status.success { background: #f0fdf4; color: #15803d; border: 1px solid #bbf7d0; }

/* —— 生成位置确认弹窗 —— */
.ai-dialog-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.4);
  display: flex; align-items: center; justify-content: center; z-index: 1000;
}
.ai-dialog {
  background: #fff; border-radius: 8px; padding: 20px;
  width: 320px; box-shadow: 0 10px 40px rgba(0,0,0,.2);
}
.ai-dialog h4 {
  font-size: 14px; font-weight: 600; color: #1f2937; margin-bottom: 8px;
}
.ai-dialog p {
  font-size: 12px; color: #6b7280; margin-bottom: 16px; line-height: 1.5;
}
.ai-dialog-actions {
  display: flex; gap: 8px; justify-content: flex-end;
}
.ai-dialog-actions button {
  padding: 6px 14px; font-size: 12px; font-weight: 500;
  border: 1px solid #d1d5db; background: #fff; color: #4b5563;
  border-radius: 6px; cursor: pointer; transition: all .12s;
}
.ai-dialog-actions button:hover { background: #f3f4f6; }
.ai-dialog-actions .primary {
  background: #2563eb; color: #fff; border-color: #2563eb;
}
.ai-dialog-actions .primary:hover { background: #1d4ed8; }

/* —— 页面列表 —— */
.page-list { max-height: 260px; overflow-y: auto; }
.page-item {
  display: flex; align-items: center; gap: 4px;
  padding: 6px 8px; border-radius: 6px; cursor: pointer;
  font-size: 13px; color: #374151; margin-bottom: 2px; transition: all .12s;
}
.page-item:hover { background: #f3f4f6; }
.page-item.active { background: #eff6ff; color: #2563eb; font-weight: 500; }
.page-item .page-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.page-item .page-actions { display: none; gap: 2px; }
.page-item:hover .page-actions { display: flex; }
.page-item .page-actions button {
  width: 22px; height: 22px; border: none; background: transparent;
  border-radius: 4px; cursor: pointer; font-size: 12px; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  color: #9ca3af; transition: all .12s;
}
.page-item .page-actions button:hover { background: #e5e7eb; color: #374151; }
.page-item .page-actions .btn-del-page:hover { background: #fee2e2; color: #dc2626; }

/* 页面名内联编辑 */
.page-name-input {
  border: 1px solid #3b82f6; border-radius: 4px; padding: 1px 4px;
  font-size: 13px; outline: none; width: 100%; background: white;
}

/* ==================== 右侧属性面板 ==================== */
.right-panel {
  width: 280px; min-width: 280px; background: #fff;
  border-left: 1px solid #e5e7eb; overflow-y: auto;
}
.prop-group { margin-bottom: 14px; }
.prop-group label {
  display: block; font-size: 11px; font-weight: 600; color: #6b7280;
  margin-bottom: 4px; text-transform: uppercase; letter-spacing: .3px;
}
.prop-group input,
.prop-group select,
.prop-group textarea {
  width: 100%; padding: 6px 8px; border: 1px solid #d1d5db;
  border-radius: 6px; font-size: 13px; outline: none; transition: border .12s;
  background: #fff; color: #1f2937;
}
.prop-group input:focus,
.prop-group select:focus,
.prop-group textarea:focus { border-color: #3b82f6; box-shadow: 0 0 0 3px rgba(59,130,246,.1); }
.prop-group textarea { resize: vertical; min-height: 60px; font-family: inherit; }
.prop-group input[type="color"] { height: 34px; padding: 2px; cursor: pointer; }
.prop-row { display: flex; gap: 8px; }
.prop-row > * { flex: 1; }
.prop-btn {
  padding: 6px 10px; font-size: 12px; border: 1px solid #e5e7eb;
  background: #fff; color: #374151; border-radius: 6px; cursor: pointer;
  transition: all .12s;
}
.prop-btn:hover { background: #3b82f6; color: #fff; border-color: #3b82f6; }

/* ==================== 画布 ==================== */
/* —— 网格背景 —— */
.canvas-wrapper {
  padding: 32px; min-height: 100%; display: flex; justify-content: center;
  align-items: flex-start; position: relative;
}

#canvas {
  position: relative; background: #ffffff;
  border-radius: 4px;
  box-shadow: 0 1px 4px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.05);
  /* 背景网格：20px 格子 */
  background-image:
    linear-gradient(rgba(0,0,0,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,.04) 1px, transparent 1px);
  background-size: 20px 20px;
  /* 尺寸由 JS 动态设置 */ width: 1200px; min-height: 700px;
  transition: width .3s ease;
}

/* 预览模式画布 */
.preview-mode #canvas {
  box-shadow: 0 2px 20px rgba(0,0,0,.12);
  border: 1px solid #e5e7eb;
}

/* 画布元素容器 */
.canvas-elements { width: 100%; min-height: 700px; position: relative; }

/* ==================== 画布上的元素 ==================== */
.canvas-el {
  position: absolute; cursor: move; user-select: none;
  border: 2px solid transparent; border-radius: 6px;
  transition: box-shadow .12s;
  overflow: hidden;
}
.canvas-el:hover { border-color: rgba(59,130,246,.3); }

/* 选中状态：显示手柄和选中边框，且优先级最高 */
.canvas-el.selected {
  border-color: #3b82f6; z-index: 20 !important;
  box-shadow: 0 0 0 1px rgba(59,130,246,.2);
}
.canvas-el.selected .resize-handle { display: block; }

/* 多选：除主选中外的次选中元素，使用虚线边框 */
.canvas-el.selected:not(.main-selected) {
  border-style: dashed;
  border-color: #60a5fa;
  box-shadow: 0 0 0 1px rgba(96,165,250,.15);
}
.canvas-el.selected:not(.main-selected) .resize-handle { display: none; }

/* 预览模式下隐藏选中态及手柄 */
.preview-mode .canvas-el { cursor: default; border-color: transparent !important; }
.preview-mode .canvas-el:hover { border-color: transparent !important; }
.preview-mode .resize-handle { display: none !important; }
.preview-mode .canvas-el.selected { border-color: transparent !important; box-shadow: none !important; }

/* —— 调整大小手柄 —— */
.resize-handle {
  display: none; position: absolute; width: 10px; height: 10px;
  background: #3b82f6; border: 2px solid #fff; border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,.2); z-index: 10;
}
.resize-handle.nw { top: -5px; left: -5px; cursor: nw-resize; }
.resize-handle.ne { top: -5px; right: -5px; cursor: ne-resize; }
.resize-handle.sw { bottom: -5px; left: -5px; cursor: sw-resize; }
.resize-handle.se { bottom: -5px; right: -5px; cursor: se-resize; }
.resize-handle.n  { top: -5px; left: 50%; margin-left: -5px; cursor: n-resize; }
.resize-handle.s  { bottom: -5px; left: 50%; margin-left: -5px; cursor: s-resize; }
.resize-handle.w  { top: 50%; left: -5px; margin-top: -5px; cursor: w-resize; }
.resize-handle.e  { top: 50%; right: -5px; margin-top: -5px; cursor: e-resize; }

/* ==================== 选择框（拖拽创建） ==================== */
#selection-box {
  position: absolute; z-index: 100;
  border: 2px dashed #3b82f6; background: rgba(59,130,246,.06);
  border-radius: 4px; pointer-events: none;
}

/* ==================== 组件选择弹窗 ==================== */
.picker-item {
  display: flex; flex-direction: column; align-items: center;
  gap: 6px; padding: 16px 8px 12px;
  border: 2px solid #e5e7eb; border-radius: 10px; cursor: pointer;
  transition: all .15s; user-select: none;
}
.picker-item:hover {
  border-color: #3b82f6; background: #eff6ff; transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59,130,246,.15);
}
.picker-icon { font-size: 28px; line-height: 1; }
.picker-label { font-size: 12px; color: #374151; font-weight: 500; }
.picker-item:hover .picker-label { color: #2563eb; }

/* ==================== 元素内部内容样式 ==================== */
.el-text { padding: 12px 16px; font-size: 15px; color: #1f2937; line-height: 1.6; word-break: break-word; }
.el-text h1 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.el-text h2 { font-size: 22px; font-weight: 600; margin-bottom: 6px; }
.el-text p { margin-bottom: 6px; }
.el-text .small { font-size: 13px; color: #6b7280; }

.el-image { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; background: #f9fafb; }
.el-image img { width: 100%; height: 100%; object-fit: cover; }
.el-image .placeholder {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  color: #9ca3af; font-size: 13px;
}
.el-image .placeholder svg { width: 40px; height: 40px; }

.el-video { width: 100%; height: 100%; background: #111; display: flex; align-items: center; justify-content: center; }
.el-video video, .el-video iframe { width: 100%; height: 100%; border: none; }
.el-video .placeholder {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: #9ca3af; font-size: 13px; cursor: pointer;
}

.el-button { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; }
.el-button button {
  padding: 10px 28px; border-radius: 8px; font-size: 15px; font-weight: 500;
  border: none; cursor: pointer; transition: all .15s;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.el-button button:hover { filter: brightness(1.08); transform: translateY(-1px); }
.el-button button:active { transform: translateY(0); }

.el-card {
  width: 100%; height: 100%; display: flex; flex-direction: column;
  border-radius: 8px; overflow: hidden;
}
.el-card .card-img { height: 55%; background: #e5e7eb; display: flex; align-items: center; justify-content: center; color: #9ca3af; font-size: 24px; }
.el-card .card-img img { width: 100%; height: 100%; object-fit: cover; }
.el-card .card-body { padding: 12px 14px; flex: 1; }
.el-card .card-body .card-title { font-weight: 600; font-size: 15px; margin-bottom: 4px; color: #1f2937; }
.el-card .card-body .card-desc { font-size: 12px; color: #6b7280; line-height: 1.4; }

/* ==================== 滚动条美化 ==================== */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #9ca3af; }

/* ==================== 空状态提示 ==================== */
.empty-hint {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  text-align: center; color: #d1d5db; pointer-events: none;
}
.empty-hint svg { width: 56px; height: 56px; margin: 0 auto 12px; }
.empty-hint p { font-size: 14px; }

/* ==================== 导出预览 ==================== */
.toast {
  position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%);
  background: #1f2937; color: #fff; padding: 10px 24px; border-radius: 8px;
  font-size: 13px; z-index: 999; box-shadow: 0 4px 20px rgba(0,0,0,.2);
  animation: toastIn .3s ease;
}
@keyframes toastIn { from { opacity: 0; transform: translateX(-50%) translateY(20px); } to { opacity: 1; transform: translateX(-50%) translateY(0); } }