/**
 * Knowledge Graph Styles for Hexo Butterfly
 * 知识图谱组件样式
 */

/* ========== 侧边栏图谱卡片 ========== */
.kg-card-widget {
  background: var(--card-bg, var(--global-bg, #fff));
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.kg-card-widget:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.kg-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px 8px;
}

.kg-card-title {
  font-size: 0.9em;
  font-weight: 600;
  color: var(--font-color, #4c4948);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.kg-card-title i {
  font-size: 0.85em;
  color: var(--theme-color, #49B1F5);
}

.kg-global-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--font-color, #4c4948);
  opacity: 0.4;
  padding: 4px;
  border-radius: 4px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.kg-global-btn:hover {
  opacity: 0.8;
  background: var(--hover-bg, rgba(169, 169, 169, 0.1));
}

.kg-global-btn svg {
  width: 18px;
  height: 18px;
}

.kg-graph-outer {
  position: relative;
  height: 250px;
  margin: 0 8px 8px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border-color, rgba(169, 169, 169, 0.15));
  background: var(--card-bg, var(--global-bg, #fff));
}

.kg-graph-outer canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
}

.kg-graph-outer canvas:active {
  cursor: grabbing;
}

.kg-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--font-color, #4c4948);
  opacity: 0.5;
  font-size: 0.85em;
}

/* 图谱节点统计 */
.kg-stats {
  display: flex;
  gap: 12px;
  padding: 6px 16px 10px;
  font-size: 0.75em;
  color: var(--font-color, #4c4948);
  opacity: 0.6;
}

.kg-stats span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.kg-stats .kg-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.kg-dot-current { background: #f7ba2a; }
.kg-dot-visited { background: #ff7e67; }
.kg-dot-node { background: #49B1F5; }
.kg-dot-tag { background: #49B1F5; border: 1px solid #ff7e67; }

/* ========== 全局图谱弹窗 ========== */
.kg-global-overlay {
  position: fixed;
  z-index: 9999;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.kg-global-overlay.active {
  display: flex;
  opacity: 1;
}

.kg-global-container {
  position: relative;
  width: 85vw;
  height: 80vh;
  max-width: 1200px;
  background: var(--card-bg, var(--global-bg, #fff));
  border-radius: 12px;
  border: 1px solid var(--border-color, rgba(169, 169, 169, 0.15));
  overflow: hidden;
  margin: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  animation: kg-fade-in 0.3s ease;
}

@keyframes kg-fade-in {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.kg-global-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color, rgba(169, 169, 169, 0.1));
}

.kg-global-title {
  font-size: 1.1em;
  font-weight: 600;
  color: var(--font-color, #4c4948);
  display: flex;
  align-items: center;
  gap: 8px;
}

.kg-global-title i {
  color: var(--theme-color, #49B1F5);
}

.kg-global-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--font-color, #4c4948);
  opacity: 0.5;
  font-size: 1.2em;
  padding: 4px 8px;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.kg-global-close:hover {
  opacity: 1;
  background: var(--hover-bg, rgba(169, 169, 169, 0.1));
}

.kg-global-body {
  height: calc(100% - 60px);
  position: relative;
}

.kg-global-body canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
}

.kg-global-body canvas:active {
  cursor: grabbing;
}

/* 全局图谱图例 */
.kg-legend {
  position: absolute;
  bottom: 16px;
  left: 16px;
  display: flex;
  gap: 16px;
  font-size: 0.75em;
  color: var(--font-color, #4c4948);
  opacity: 0.7;
  background: var(--card-bg, var(--global-bg, #fff));
  padding: 8px 14px;
  border-radius: 6px;
  border: 1px solid var(--border-color, rgba(169, 169, 169, 0.1));
}

.kg-legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
}

.kg-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

/* 快捷键提示 */
.kg-shortcut-hint {
  position: absolute;
  bottom: 16px;
  right: 16px;
  font-size: 0.7em;
  color: var(--font-color, #4c4948);
  opacity: 0.4;
  background: var(--card-bg, var(--global-bg, #fff));
  padding: 6px 10px;
  border-radius: 4px;
  border: 1px solid var(--border-color, rgba(169, 169, 169, 0.1));
}

/* ========== 暗色模式适配 ========== */
[data-theme="dark"] {
  /* 侧边栏 */
  .kg-card-widget {
    background: var(--card-bg, rgba(30, 30, 30, 0.9));
  }
  .kg-graph-outer {
    background: var(--card-bg, rgba(30, 30, 30, 0.6));
    border-color: rgba(255, 255, 255, 0.06);
  }
  .kg-global-btn:hover,
  .kg-global-close:hover {
    background: rgba(255, 255, 255, 0.06);
  }
  
  /* 全局图 */
  .kg-global-overlay {
    background: rgba(0, 0, 0, 0.6);
  }
  .kg-global-container {
    background: var(--card-bg, rgba(30, 30, 30, 0.95));
    border-color: rgba(255, 255, 255, 0.06);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  }
  .kg-legend,
  .kg-shortcut-hint {
    background: rgba(30, 30, 30, 0.9);
    border-color: rgba(255, 255, 255, 0.06);
  }
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .kg-graph-outer {
    height: 200px;
  }
  
  .kg-global-container {
    width: 95vw;
    height: 85vh;
    border-radius: 8px;
  }
  
  .kg-legend {
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.65em;
    padding: 6px 10px;
  }
  
  .kg-shortcut-hint {
    display: none;
  }
}