/* 全屏图片查看器 */
.fullscreen-viewer {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-viewer);
  display: flex;
  flex-direction: column;
  background: #000;
}

.viewer-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #000;
}

.viewer-content {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  z-index: 1;
}

.viewer-header {
  padding: var(--spacing-lg);
  display: flex;
  justify-content: flex-end;
}

.viewer-close {
  color: white;
}

.viewer-image-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

#viewer-image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: var(--transition);
}

.viewer-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  color: white;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.viewer-actions {
  padding: var(--spacing-xl) var(--spacing-lg);
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
}

.action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  color: white;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-sm);
  backdrop-filter: blur(10px);
  transition: var(--transition-fast);
  min-width: 80px;
}

.action-btn:active {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(0.95);
}

.action-btn span {
  font-size: 14px;
}

/* 菜单弹窗 */
.menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--overlay-bg);
  z-index: var(--z-menu);
  display: flex;
  align-items: flex-end;
  animation: fadeIn 0.2s ease;
}

.menu-panel {
  width: 100%;
  background: var(--bg-secondary);
  border-radius: var(--border-radius) var(--border-radius) 0 0;
  padding: var(--spacing-lg);
  animation: slideUp 0.3s ease;
}

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

.menu-header h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
}

.menu-items {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.menu-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  color: var(--text-primary);
  background: var(--bg-color);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
  width: 100%;
  text-align: left;
}

.menu-item:active {
  background: var(--border-color);
  transform: scale(0.98);
}

.menu-item span {
  font-size: 16px;
}

/* 快捷按钮样式 */
.image-btn,
.video-btn {
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.image-btn:hover,
.video-btn:hover {
  color: var(--primary-color);
}

.image-btn:active,
.video-btn:active {
  transform: scale(0.9);
}

/* 图片预览区 */
.image-preview-container {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.image-preview-list {
  display: flex;
  gap: var(--spacing-sm);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.image-preview-item {
  position: relative;
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  background: var(--bg-color);
}

.image-preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-preview-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 20px;
  height: 20px;
  background: rgba(0, 0, 0, 0.6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.image-preview-remove:active {
  background: rgba(0, 0, 0, 0.8);
  transform: scale(0.9);
}

/* 附件菜单 */
.attach-menu {
  position: absolute;
  bottom: calc(var(--input-height) + var(--spacing-sm));
  left: var(--spacing-lg);
  background: var(--bg-secondary);
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-sm);
  animation: slideUp 0.2s ease;
}

.attach-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  color: var(--text-primary);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
  white-space: nowrap;
}

.attach-item:active {
  background: var(--bg-color);
}

.attach-item span {
  font-size: 15px;
}

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

@keyframes slideUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* 功能面板 */
.function-panel {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg);
  z-index: var(--z-modal);
  animation: slideUp 0.2s ease;
}

.function-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-lg);
}

.function-panel.hidden {
  display: none;
}

.function-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  color: var(--text-primary);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
}

.function-item:active {
  background: var(--bg-color);
}

.function-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-color);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.function-label {
  font-size: 12px;
  color: var(--text-secondary);
}

/* 响应式 */
@media (min-width: 768px) {
  .menu-panel {
    max-width: 400px;
    margin: 0 auto;
    border-radius: var(--border-radius);
  }

  .menu-overlay {
    align-items: center;
  }
}