/**
 * 素材选择器 - V21 设计系统样式
 * 支持批量选择、拖拽排序、预览缩略图、质量分筛选
 * 前缀: as- (AssetSelector)
 */
@import "../../styles/global.css";

/* ============================================================
   容器
   ============================================================ */
.as-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

/* ── 工具栏 ─────────────────────────────────────────────────── */
.as-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
  flex-wrap: wrap;
}

.as-toolbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex: 1;
  min-width: 0;
}

.as-toolbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* 搜索框 */
.as-search {
  flex: 1;
  min-width: 120px;
  max-width: 200px;
}

/* 视图切换按钮 */
.as-view-btn {
  width: 28px;
  height: 28px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-all);
  font-size: 14px;
}

.as-view-btn:hover {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.as-view-btn.active {
  background: var(--primary-soft);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

/* ── 批量操作栏 ─────────────────────────────────────────────── */
.as-batch-bar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 6px var(--space-md);
  background: var(--primary-soft);
  border-bottom: 1px solid var(--color-primary-200);
  font-size: var(--font-size-sm);
  color: var(--primary-color);
  flex-shrink: 0;
}

.as-batch-bar-count {
  font-weight: 600;
}

.as-batch-bar-actions {
  display: flex;
  gap: var(--space-xs);
  margin-left: auto;
}

/* ── 素材列表区域 ───────────────────────────────────────────── */
.as-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-sm);
}

.as-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl) var(--space-md);
  text-align: center;
  color: var(--text-secondary);
}

.as-empty-icon {
  font-size: 36px;
  margin-bottom: var(--space-sm);
  opacity: 0.4;
}

.as-empty p {
  margin: 0;
  font-size: var(--font-size-sm);
}

/* ── 网格视图 ───────────────────────────────────────────────── */
.as-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: var(--space-sm);
}

.as-grid.compact {
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 6px;
}

/* ── 列表视图 ───────────────────────────────────────────────── */
.as-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* ============================================================
   素材卡片 — 网格模式
   ============================================================ */
.as-card {
  position: relative;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition-all);
  background: var(--bg-primary);
  user-select: none;
}

.as-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-sm);
}

.as-card.selected {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px var(--primary-soft);
}

.as-card.dragging {
  opacity: 0.4;
}

.as-card.drag-over {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px var(--primary-color);
}

/* 缩略图区域 */
.as-card-thumb {
  position: relative;
  aspect-ratio: 9 / 16;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.as-card-thumb-icon {
  font-size: 28px;
  opacity: 0.4;
}

.as-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 类型角标 */
.as-card-type-badge {
  position: absolute;
  top: 4px;
  left: 4px;
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  font-size: 10px;
  line-height: 1.4;
  backdrop-filter: blur(4px);
}

/* 时长角标 */
.as-card-duration {
  position: absolute;
  bottom: 4px;
  right: 4px;
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  font-size: 10px;
  font-weight: 500;
  line-height: 1.4;
}

/* 质量分角标 */
.as-card-quality {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 700;
  color: #fff;
}

.as-card-quality.excellent {
  background: var(--success-color, #10b981);
}

.as-card-quality.good {
  background: var(--primary-color, #6366f1);
}

.as-card-quality.fair {
  background: var(--warning-color, #f59e0b);
}

.as-card-quality.poor {
  background: var(--error-color, #ef4444);
}

/* 选择 checkbox */
.as-card-checkbox {
  position: absolute;
  top: 4px;
  left: 4px;
  z-index: 2;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-sm);
  border: 2px solid rgba(255, 255, 255, 0.7);
  background: rgba(0, 0, 0, 0.2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-all);
  backdrop-filter: blur(4px);
}

.as-card-checkbox.checked {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.as-card-checkbox.checked::after {
  content: "✓";
  color: #fff;
  font-size: 11px;
  font-weight: 700;
}

/* 有 checkbox 时，类型角标右移 */
.as-card.has-checkbox .as-card-type-badge {
  left: 26px;
}

/* 卡片信息 */
.as-card-info {
  padding: 6px 8px;
}

.as-card-name {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
  line-height: 1.3;
}

.as-card-meta {
  font-size: 10px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ============================================================
   素材卡片 — 列表模式
   ============================================================ */
.as-list-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 6px 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-all);
  user-select: none;
}

.as-list-item:hover {
  background: var(--bg-secondary);
  border-color: var(--border-color);
}

.as-list-item.selected {
  background: var(--primary-soft);
  border-color: var(--primary-color);
}

.as-list-item.dragging {
  opacity: 0.4;
}

.as-list-item.drag-over {
  border-top: 2px solid var(--primary-color);
}

.as-list-item-checkbox {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  border: 2px solid var(--border-color);
  flex-shrink: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-all);
}

.as-list-item-checkbox.checked {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.as-list-item-checkbox.checked::after {
  content: "✓";
  color: #fff;
  font-size: 10px;
  font-weight: 700;
}

.as-list-item-drag {
  cursor: grab;
  color: var(--text-secondary);
  font-size: 14px;
  opacity: 0.4;
  flex-shrink: 0;
}

.as-list-item-drag:hover {
  opacity: 1;
}

.as-list-item-drag:active {
  cursor: grabbing;
}

.as-list-item-icon {
  font-size: 20px;
  flex-shrink: 0;
  width: 28px;
  text-align: center;
}

.as-list-item-info {
  flex: 1;
  min-width: 0;
}

.as-list-item-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.as-list-item-meta {
  font-size: 11px;
  color: var(--text-secondary);
}

.as-list-item-quality {
  width: 32px;
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 0;
}

/* ============================================================
   悬浮预览
   ============================================================ */
.as-preview-overlay {
  position: fixed;
  z-index: 1000;
  pointer-events: none;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  min-width: 180px;
  max-width: 260px;
  animation: as-preview-in 0.15s ease;
}

.as-preview-overlay-thumb {
  width: 100%;
  aspect-ratio: 9 / 16;
  max-height: 200px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 8px;
}

.as-preview-overlay-thumb img,
.as-preview-overlay-thumb video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.as-preview-overlay-thumb-icon {
  font-size: 48px;
  opacity: 0.3;
}

.as-preview-overlay-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 4px;
  word-break: break-all;
}

.as-preview-overlay-meta {
  font-size: 11px;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

@keyframes as-preview-in {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 768px) {
  .as-grid {
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  }

  .as-toolbar {
    padding: var(--space-xs) var(--space-sm);
  }

  .as-search {
    max-width: 140px;
  }
}

@media (max-width: 480px) {
  .as-grid {
    grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    gap: 4px;
  }

  .as-card-info {
    padding: 4px 6px;
  }

  .as-card-name {
    font-size: 10px;
  }
}