/* 移动端与交互降级层，独立放置便于后续继续收口。 */
.color-note {
  display: -webkit-box;
  overflow: hidden;
  color: #b8c8cf;
  font-size: 0.75rem;
  line-height: 1.35;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.rich-color-swatch.is-copied {
  border-color: rgba(94, 234, 212, 0.78);
  background: #0b302d;
  box-shadow: inset 0 0 0 1px rgba(94, 234, 212, 0.16);
}

.color-empty-state {
  margin: 14px 4px 4px;
  padding: 18px;
  border: 1px dashed rgba(148, 190, 202, 0.28);
  border-radius: 10px;
  color: #b8c8cf;
  text-align: center;
}

@media (hover: none) {
  .tool-card-mini:hover,
  .tool-card-mini:hover .tool-icon,
  .color-swatch:hover,
  .rich-color-swatch:hover,
  .btn:hover {
    transform: none;
  }
}

@media (max-width: 768px) {
  body::before {
    position: absolute;
    opacity: 0.25;
  }

  .container {
    padding: 22px 14px 38px;
  }

  .header {
    margin-bottom: 22px;
    text-align: left;
  }

  .header h1 {
    font-size: clamp(1.7rem, 8vw, 2.05rem);
  }

  .tools-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .tool-card-mini {
    height: auto;
    min-height: 86px;
    padding: 12px;
  }

  .tool-card-mini .tool-icon {
    width: 40px;
    height: 40px;
    margin-right: 10px;
  }

  .tool-card-mini h3 {
    font-size: 0.9rem;
  }

  .tool-modal {
    align-items: stretch;
    padding: 0;
    background: var(--tool-shell);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  .tool-modal-content {
    width: 100%;
    height: 100dvh;
    max-height: 100dvh;
    margin: 0;
    padding: 14px 12px 28px;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    animation-duration: 130ms;
  }
}

@media (max-width: 768px) {
  .tool-modal-close {
    position: fixed;
    top: max(10px, env(safe-area-inset-top));
    right: 10px;
    width: 44px;
    height: 44px;
    border-radius: 11px;
  }

  .tool-modal-content h2,
  .book-tool > h2 {
    margin: 2px 54px 8px 0;
    font-size: 1.28rem;
    line-height: 1.2;
  }

  .tool-subtitle {
    margin: 0 54px 14px 0;
    color: #b7c9d1;
    font-size: 0.86rem;
    line-height: 1.5;
  }

  .book-spread {
    gap: 10px;
  }

  .book-control-page {
    order: 1;
    overflow: visible;
  }

  .book-preview-page {
    order: 2;
    min-height: 250px;
  }

  .book-page {
    padding: 10px;
  }

  .tabs,
  .color-tabs {
    display: flex;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scrollbar-width: none;
  }

  .tabs::-webkit-scrollbar,
  .color-tabs::-webkit-scrollbar {
    display: none;
  }

  .tab {
    min-width: max-content;
    min-height: 44px;
    padding-inline: 14px;
  }

  .btn,
  .btn-copy,
  .upload-button,
  .tool-actions .btn {
    min-height: 44px;
  }
}

@media (max-width: 768px) {
  .form-input,
  .form-textarea,
  .form-select,
  .tool-modal-content select,
  .tool-modal-content input[type="text"],
  .tool-modal-content input[type="search"],
  .tool-modal-content input[type="number"],
  .tool-modal-content input[type="datetime-local"],
  .tool-modal-content input[type="password"],
  .tool-modal-content input[type="url"] {
    min-height: 44px;
    font-size: 16px;
  }

  .color-tool-heading {
    grid-template-columns: 1fr;
    gap: 12px;
    margin: 0 52px 12px 0;
  }

  .color-tool-heading .tool-subtitle {
    margin-right: 0;
  }

  .color-search-field {
    margin-right: -52px;
  }

  .color-workbench {
    grid-template-columns: 1fr;
  }

  .color-composer {
    position: static;
  }

  .custom-color-preview {
    min-height: 148px;
  }

  .color-library {
    padding: 8px;
  }

  .color-tabs {
    position: static;
    margin-bottom: 8px;
  }

  .color-palette {
    grid-template-columns: 1fr;
    max-height: none;
    overflow: visible;
  }

  .color-swatch,
  .rich-color-swatch {
    min-height: 86px;
    grid-template-columns: 68px minmax(0, 1fr);
  }

  .color-swatch .color-box,
  .rich-color-swatch .color-box {
    width: 68px;
    min-height: 66px;
  }
}

@media (max-width: 560px) {
  .tools-grid {
    grid-template-columns: 1fr;
  }

  .tool-card-mini {
    min-height: 72px;
  }

  .form-grid,
  .compact-inline-grid,
  .book-control-page .form-grid,
  .book-control-page .compact-inline-grid,
  .password-number-grid,
  .password-options-grid {
    grid-template-columns: 1fr;
  }

  .color-picker-controls {
    grid-template-columns: 76px minmax(0, 1fr);
  }
}

@media (max-width: 380px) {
  .container {
    padding-inline: 10px;
  }

  .tool-modal-content {
    padding-inline: 9px;
  }

  .color-picker-controls {
    grid-template-columns: 1fr;
  }

  .color-picker-field input[type="color"] {
    height: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}