/* KK工具网 · 组件样式
 * 详细规范见 ../docs/STYLE_GUIDE.md
 */

/* ============================================================
 * 侧边栏
 * ============================================================ */
.kk-side {
  padding: var(--kk-space-3) var(--kk-space-2);
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.kk-side__title {
  font-size: 12px;
  color: var(--kk-text-3);
  padding: var(--kk-space-3) var(--kk-space-3) var(--kk-space-2);
  letter-spacing: .4px;
}

.kk-side-item {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 40px;
  padding: 0 var(--kk-space-3);
  border-radius: var(--kk-radius-sm);
  color: var(--kk-text-2);
  cursor: pointer;
  position: relative;
  transition: background .14s, color .14s;
  user-select: none;
}
.kk-side-item:hover { background: var(--kk-sidebar-hov); }
.kk-side-item.is-active {
  background: var(--kk-primary-bg);
  color: var(--kk-primary);
  font-weight: 550;
}
.kk-side-item.is-active::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  border-radius: 0 3px 3px 0;
  background: var(--kk-primary);
}
.kk-side-item__icon {
  width: 18px; height: 18px;
  flex-shrink: 0;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.6;
}
.kk-side-item__name { flex: 1; font-size: var(--kk-fs-base); }
.kk-side-item__arrow {
  margin-left: auto;
  width: 12px; height: 12px;
  transition: transform .2s;
  color: var(--kk-text-3);
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}
.kk-side-item.is-open .kk-side-item__arrow {
  transform: rotate(90deg);
  color: var(--kk-primary);
}

/* 二级分类 */
.kk-side-sub {
  display: none;
  flex-direction: column;
  gap: 1px;
  padding: 2px 0 6px 28px;
}
.kk-side-item.is-open + .kk-side-sub { display: flex; }

.kk-side-sub__item {
  height: 32px;
  padding: 0 var(--kk-space-3);
  border-radius: var(--kk-radius-sm);
  color: var(--kk-text-3);
  font-size: var(--kk-fs-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color .14s, background .14s;
}
.kk-side-sub__item::before {
  content: "";
  width: 4px; height: 4px;
  border-radius: 50%;
  background: currentColor;
  opacity: .4;
}
.kk-side-sub__item:hover { color: var(--kk-primary); background: transparent; }
.kk-side-sub__item.is-active {
  color: var(--kk-primary);
  font-weight: 500;
  background: transparent;
}
.kk-side-sub__item.is-active::before { opacity: 1; }

/* ============================================================
 * 工具卡片
 * ============================================================ */
.kk-card {
  background: var(--kk-surface);
  border: 1px solid var(--kk-border);
  border-radius: var(--kk-radius);
  padding: var(--kk-space-5);
  box-shadow: var(--kk-shadow-sm);
  cursor: pointer;
  transition: all .18s;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--kk-space-3);
}
.kk-card:hover {
  border-color: var(--kk-primary);
  box-shadow: var(--kk-shadow);
  transform: translateY(-2px);
}
.kk-card:hover .kk-card__icon {
  background: var(--kk-primary);
  color: var(--kk-primary-fg);
}

.kk-card__head {
  display: flex;
  align-items: flex-start;
  gap: var(--kk-space-3);
}

.kk-card__icon {
  width: 40px; height: 40px;
  border-radius: var(--kk-radius-sm);
  background: var(--kk-primary-bg);
  color: var(--kk-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background .18s, color .18s;
}
.kk-card__icon svg {
  width: 22px; height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.6;
}

.kk-card__title-block { flex: 1; min-width: 0; }

.kk-card__title {
  font-size: var(--kk-fs-md);
  font-weight: 600;
  color: var(--kk-text-1);
  margin: 0 0 2px;
  line-height: 1.4;
}

.kk-card__desc {
  font-size: var(--kk-fs-sm);
  color: var(--kk-text-2);
  line-height: 1.6;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: calc(var(--kk-fs-sm) * 1.6 * 2);
}

.kk-card__foot {
  display: flex;
  align-items: center;
  gap: var(--kk-space-4);
  font-size: var(--kk-fs-xs);
  color: var(--kk-text-3);
  margin-top: auto;
  padding-top: var(--kk-space-2);
  border-top: 1px dashed var(--kk-border-soft);
}
.kk-card__meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
}
.kk-card__meta-item svg {
  width: 12px; height: 12px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.6;
}
.kk-card__meta-item b {
  font-weight: 600;
  color: var(--kk-text-2);
  font-variant-numeric: tabular-nums;
}

/* HOT 红点 */
.kk-hot {
  position: absolute;
  top: 12px; right: 12px;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: var(--kk-radius-sm);
  background: var(--kk-hot-bg);
  color: var(--kk-hot);
  font-weight: 600;
  letter-spacing: .3px;
}

/* ============================================================
 * 分组区块（选中「全部工具」时，按二级分类分块展示）
 * ============================================================ */
.kk-group {
  grid-column: 1 / -1;
  margin-bottom: var(--kk-space-8);
}
.kk-group:last-child { margin-bottom: 0; }

.kk-group__head {
  display: flex;
  align-items: center;
  gap: var(--kk-space-2);
  margin-bottom: var(--kk-space-4);
}
.kk-group__bar {
  width: 3px;
  height: 15px;
  border-radius: 2px;
  background: var(--kk-primary);
  flex-shrink: 0;
}
.kk-group__title {
  font-size: var(--kk-fs-md);
  font-weight: 600;
  color: var(--kk-text-1);
  letter-spacing: -.2px;
}
.kk-group__count {
  font-size: var(--kk-fs-xs);
  color: var(--kk-text-3);
  padding: 2px 9px;
  background: var(--kk-info-bg);
  border-radius: var(--kk-radius-pill);
  font-weight: 400;
}

/* 分组模式下：外层网格行间距归零，改由 .kk-group 的 margin 控制组间距 */
.kk-tool-grid--grouped { row-gap: 0; }

/* 分组内的卡片网格（间距略小于顶层） */
.kk-tool-grid--inner { gap: var(--kk-space-4); }

/* 空态补充提示 */
.kk-empty__hint {
  margin-top: var(--kk-space-2);
  font-size: var(--kk-fs-xs);
  color: var(--kk-text-3);
  opacity: .8;
}

/* ============================================================
 * 按钮
 * ============================================================ */
.kk-btn {
  height: 36px;
  padding: 0 16px;
  border-radius: var(--kk-radius);
  font-size: var(--kk-fs-base);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid transparent;
  background: transparent;
  color: inherit;
  transition: all .14s;
}
.kk-btn--pri {
  background: var(--kk-primary);
  color: var(--kk-primary-fg);
  font-weight: 500;
}
.kk-btn--pri:hover { background: var(--kk-primary-hover); }
.kk-btn--sec {
  background: var(--kk-surface);
  color: var(--kk-text-2);
  border-color: var(--kk-border);
}
.kk-btn--sec:hover {
  color: var(--kk-primary);
  border-color: var(--kk-primary);
}
.kk-btn--txt {
  color: var(--kk-primary);
  padding: 0 8px;
}
.kk-btn--txt:hover { background: var(--kk-primary-bg); }

/* ============================================================
 * 标签
 * ============================================================ */
.kk-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: var(--kk-radius-sm);
  font-size: var(--kk-fs-xs);
  font-weight: 500;
  line-height: 1.4;
}
.kk-tag::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: currentColor;
}
.kk-tag--pri { background: var(--kk-primary-bg); color: var(--kk-primary); }
.kk-tag--suc { background: var(--kk-success-bg); color: var(--kk-success); }
.kk-tag--wrn { background: var(--kk-warning-bg); color: var(--kk-warning); }
.kk-tag--dan { background: var(--kk-danger-bg);  color: var(--kk-danger); }
.kk-tag--info{ background: var(--kk-info-bg);    color: var(--kk-info); }
.kk-tag--plain::before { display: none; }

/* ============================================================
 * 图片图标（AI 生成 / 后台上传，替代内置 SVG）
 * ============================================================ */
.kk-card__icon-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--kk-radius-sm);
  display: block;
}
.kk-side-item__icon-img {
  width: 18px;
  height: 18px;
  object-fit: contain;
  border-radius: 4px;
  flex-shrink: 0;
}
.kk-side-sub__img {
  width: 13px;
  height: 13px;
  object-fit: contain;
  border-radius: 3px;
  display: inline-block;
  vertical-align: -2px;
  margin-right: 5px;
}
/* 无图标时的首字占位块 */
.kk-icph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--kk-radius-sm);
  background: var(--kk-primary-bg);
  color: var(--kk-primary);
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
}

/* ============================================================
 * 侧栏底部：反馈 / 建议 / 投稿 入口
 * ============================================================ */
.kk-side-feedback {
  /* 上外边距 auto → 推到侧栏底部（父级 .kk-side 为 flex column） */
  margin: auto var(--kk-space-1) 0;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 var(--kk-space-3);
  border-radius: var(--kk-radius-sm);
  background: var(--kk-primary-bg);
  color: var(--kk-primary);
  font-size: var(--kk-fs-sm);
  font-weight: 500;
  cursor: pointer;
  flex-shrink: 0;
  transition: background .14s, color .14s;
}
.kk-side-feedback:hover {
  background: var(--kk-primary);
  color: var(--kk-primary-fg);
}
.kk-side-feedback__icon { flex-shrink: 0; }

/* ============================================================
 * 弹窗 Modal
 * ============================================================ */
.kk-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.kk-modal__mask {
  position: absolute;
  inset: 0;
  background: rgba(29, 33, 41, .45);
}
.kk-modal__panel {
  position: relative;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  background: var(--kk-surface);
  border-radius: var(--kk-radius-lg);
  box-shadow: var(--kk-shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: kk-modal-in .18s ease;
}
@keyframes kk-modal-in {
  from { opacity: 0; transform: translateY(12px) scale(.98); }
  to   { opacity: 1; transform: none; }
}

.kk-modal__head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: var(--kk-space-4) var(--kk-space-5);
  border-bottom: 1px solid var(--kk-border-soft);
  flex-shrink: 0;
}
.kk-modal__icon {
  width: 28px; height: 28px;
  border-radius: var(--kk-radius-sm);
  background: var(--kk-primary-bg);
  color: var(--kk-primary);
  display: flex; align-items: center; justify-content: center;
}
.kk-modal__title {
  flex: 1;
  margin: 0;
  font-size: var(--kk-fs-md);
  font-weight: 600;
  color: var(--kk-text-1);
}
.kk-modal__close {
  width: 28px; height: 28px;
  border: none;
  background: transparent;
  border-radius: var(--kk-radius-sm);
  color: var(--kk-text-3);
  display: flex; align-items: center; justify-content: center;
  transition: background .14s, color .14s;
}
.kk-modal__close:hover { background: var(--kk-border-soft); color: var(--kk-text-1); }

.kk-modal__body {
  padding: var(--kk-space-5);
  overflow-y: auto;
  flex: 1;
}

.kk-modal__foot {
  display: flex;
  align-items: center;
  gap: var(--kk-space-3);
  padding: var(--kk-space-4) var(--kk-space-5);
  border-top: 1px solid var(--kk-border-soft);
  background: var(--kk-bg);
  flex-shrink: 0;
}
.kk-modal__tip {
  flex: 1;
  font-size: var(--kk-fs-xs);
  color: var(--kk-text-3);
}

/* ============================================================
 * 表单字段
 * ============================================================ */
.kk-field { margin-bottom: var(--kk-space-5); }
.kk-field:last-child { margin-bottom: 0; }

.kk-field__label {
  display: block;
  font-size: var(--kk-fs-sm);
  font-weight: 500;
  color: var(--kk-text-2);
  margin-bottom: var(--kk-space-2);
}
.kk-field__label .req { color: var(--kk-danger); }

.kk-textarea,
.kk-input {
  width: 100%;
  border: 1px solid var(--kk-border);
  border-radius: var(--kk-radius);
  padding: 10px 12px;
  font-size: var(--kk-fs-base);
  color: var(--kk-text-1);
  background: var(--kk-surface);
  outline: none;
  font-family: inherit;
  transition: border-color .14s, box-shadow .14s;
}
.kk-textarea { min-height: 110px; resize: vertical; line-height: 1.6; }
.kk-textarea:focus,
.kk-input:focus {
  border-color: var(--kk-primary);
  box-shadow: 0 0 0 3px var(--kk-primary-bg);
}
.kk-textarea::placeholder,
.kk-input::placeholder { color: var(--kk-text-3); }

.kk-field__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 6px;
}
.kk-field__hint  { font-size: var(--kk-fs-xs); color: var(--kk-text-3); }
.kk-field__count {
  font-size: var(--kk-fs-xs);
  color: var(--kk-text-3);
  font-variant-numeric: tabular-nums;
}
.kk-field__count b { color: var(--kk-text-2); font-weight: 500; }

/* 类型单选（胶囊式） */
.kk-field__types {
  display: flex;
  flex-wrap: wrap;
  gap: var(--kk-space-2);
}
.kk-radio {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--kk-border);
  border-radius: var(--kk-radius-pill);
  font-size: var(--kk-fs-sm);
  color: var(--kk-text-2);
  cursor: pointer;
  user-select: none;
  transition: background .14s, border-color .14s, color .14s;
}
.kk-radio input { display: none; }
.kk-radio:hover { border-color: var(--kk-primary); color: var(--kk-primary); }
.kk-radio.is-on {
  background: var(--kk-primary-bg);
  border-color: var(--kk-primary);
  color: var(--kk-primary);
  font-weight: 500;
}

/* 提示条 */
.kk-alert {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: var(--kk-radius);
  font-size: var(--kk-fs-sm);
  line-height: 1.5;
  margin-top: var(--kk-space-4);
}
.kk-alert svg { flex-shrink: 0; }
.kk-alert--err { background: var(--kk-danger-bg);  color: var(--kk-danger); }
.kk-alert--ok  { background: var(--kk-success-bg); color: var(--kk-success); }
/* 工具卡片：收藏按钮（真实计数） */
.kk-card__like {
  border: none; background: none; cursor: pointer; font: inherit; color: inherit;
  padding: 0; display: inline-flex; align-items: center; gap: 4px;
}
.kk-card__like:hover { color: var(--kk-danger); }
.kk-card__like.is-on { color: var(--kk-danger); }
.kk-card__like.is-on svg { fill: currentColor; }
.kk-card__like:disabled { opacity: .55; cursor: default; }

/* 前台底部（版权 + 备案号） */
.kk-foot {
  /* 位于右侧主区内容末尾：随主区一起滚动，不再单独占一屏、不影响左侧栏固定 */
  margin-top: var(--kk-space-5);
  padding-top: 14px;
  border-top: 1px solid var(--kk-border-soft);
}
.kk-foot__inner {
  display: flex; align-items: center; justify-content: center;
  gap: 6px 14px; flex-wrap: wrap;
  font-size: var(--kk-fs-xs); color: var(--kk-text-3);
}
.kk-foot__icp { color: var(--kk-text-3); text-decoration: none; }
.kk-foot__icp:hover { color: var(--kk-primary); text-decoration: underline; }
.kk-foot__note { color: var(--kk-text-3); }

/* 侧栏计数徽标（我的收藏数量） */
.kk-side-badge {
  margin-left: auto;
  min-width: 18px;
  height: 18px;
  padding: 0 6px;
  border-radius: 9px;
  background: var(--kk-primary-bg);
  color: var(--kk-primary);
  font-size: 11px;
  font-weight: 600;
  line-height: 18px;
  text-align: center;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}
.kk-side-item.is-active .kk-side-badge {
  background: rgba(255, 255, 255, .25);
  color: #fff;
}