/* ==========================================================================
   曾文正公嘉言钞 · 社交分享海报预览弹窗样式 (Share Modal & Canvas Preview)
   ========================================================================== */

/* 弹窗遮罩背景 (Ink Backdrop Overlay) */
.share-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(31, 26, 20, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.28s cubic-bezier(0.25, 1, 0.5, 1), visibility 0.28s;
}

.share-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* 弹窗主容器 (Modal Dialog Card) */
.share-modal-dialog {
  position: relative;
  width: 100%;
  max-width: 520px;
  max-height: 92vh;
  background-color: var(--bg-card);
  border: 1px solid var(--border-paper);
  border-radius: var(--radius-card);
  box-shadow: 0 24px 64px -12px rgba(24, 18, 12, 0.35);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.94) translateY(12px);
  transition: transform 0.28s cubic-bezier(0.25, 1, 0.5, 1);
}

.share-modal-overlay.active .share-modal-dialog {
  transform: scale(1) translateY(0);
}

/* 弹窗头部 (Modal Header) */
.share-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-paper);
  background-color: var(--bg-card-inner);
}

.share-modal-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink-heavy);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.share-modal-title-seal {
  display: inline-block;
  padding: 0.1rem 0.35rem;
  background-color: var(--cinnabar);
  color: #FFFDF8;
  font-family: var(--font-brush);
  font-size: 0.75rem;
  border-radius: 2px;
}

.share-modal-close-btn {
  background: none;
  border: none;
  font-size: 1.35rem;
  line-height: 1;
  color: var(--ink-muted);
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.share-modal-close-btn:hover {
  color: var(--ink-heavy);
  background-color: rgba(44, 34, 24, 0.08);
}

/* 弹窗核心内容区 (Modal Body & Image Preview) */
.share-modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.share-preview-container {
  width: 100%;
  max-width: 380px;
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 24px -4px rgba(44, 34, 24, 0.15);
  background-color: #F7F4EB;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

.share-preview-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  user-select: none;
  -webkit-touch-callout: default; /* 允许移动端长按呼出保存菜单 */
}

.share-loading-spinner {
  position: absolute;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--ink-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

/* 定制选项区 (Customization Options) */
.share-options-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 380px;
  padding: 0.25rem 0.5rem;
  font-size: 0.85rem;
  color: var(--ink-secondary);
}

.share-option-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  user-select: none;
  font-family: var(--font-serif);
}

.share-option-checkbox {
  accent-color: var(--cinnabar);
  cursor: pointer;
  width: 16px;
  height: 16px;
}

/* 弹窗底部操作区 (Modal Footer Actions) */
.share-modal-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-paper);
  background-color: var(--bg-card-inner);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.share-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 1.25rem;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  outline: none;
  text-decoration: none;
}

.share-action-btn-primary {
  background-color: var(--cinnabar);
  color: #FFFDF8;
  border: 1px solid var(--cinnabar);
  box-shadow: var(--shadow-seal);
}

.share-action-btn-primary:hover {
  background-color: var(--cinnabar-light);
  transform: translateY(-1px);
}

.share-action-btn-secondary {
  background-color: var(--bg-card-subtle);
  color: var(--ink-primary);
  border: 1px solid var(--border-paper);
}

.share-action-btn-secondary:hover {
  background-color: #FFFDF8;
  border-color: var(--ink-muted);
}

.share-hint-text {
  font-size: 0.78rem;
  color: var(--ink-muted);
  width: 100%;
  text-align: center;
  margin-top: 0.25rem;
}

/* 移动端适配 (Mobile Responsive) */
@media (max-width: 640px) {
  .share-modal-dialog {
    max-height: 96vh;
    border-radius: 12px;
  }

  .share-modal-body {
    padding: 1rem 0.75rem;
  }

  .share-modal-footer {
    padding: 0.75rem 1rem;
  }

  .share-action-btn {
    flex: 1;
    min-width: 120px;
    padding: 0.6rem 0.8rem;
    font-size: 0.86rem;
  }
}