/*
 * Jekyll Tabs - Custom styles
 * Kodeco-inspired design, fully adaptive to sunyazhou.com dark/light theme
 */

/* ══════════════════════════════════════
   CSS 变量定义 — 深色模式（默认）
   ══════════════════════════════════════ */
:root {
  --tab-header-bg:             #2b2b2b;
  --tab-header-border:         rgba(255,255,255,0.08);
  --tab-label-color:           rgba(255,255,255,0.45);
  --tab-label-hover:           rgba(255,255,255,0.85);
  --tab-label-active:          #ffffff;
  --tab-active-line:           #f05138;
  --tab-body-bg:               #1c1c1e;
  --tab-gutter-bg:             rgba(255,255,255,0.04);
  --tab-gutter-border:         rgba(255,255,255,0.08);
  --tab-lineno-color:          rgba(255,255,255,0.25);
  --tab-copy-btn-bg:           rgba(255,255,255,0.08);
  --tab-copy-btn-border:       rgba(255,255,255,0.18);
  --tab-copy-btn-color:        rgba(255,255,255,0.5);
  --tab-copy-btn-hover-bg:     rgba(255,255,255,0.16);
  --tab-copy-btn-hover-border: rgba(255,255,255,0.35);
  --tab-copy-btn-hover-color:  #ffffff;
}

/* ══════════════════════════════════════
   浅色模式覆盖
   匹配博客的 html[mode=light] 和系统浅色
   ══════════════════════════════════════ */
html[mode=light] {
  --tab-header-bg:             #3a3a3c;
  --tab-header-border:         rgba(255,255,255,0.1);
  --tab-label-color:           rgba(255,255,255,0.5);
  --tab-label-hover:           rgba(255,255,255,0.9);
  --tab-label-active:          #ffffff;
  --tab-active-line:           #f05138;
  --tab-body-bg:               #f0f0f0;
  --tab-gutter-bg:             rgba(0,0,0,0.04);
  --tab-gutter-border:         rgba(0,0,0,0.08);
  --tab-lineno-color:          #999999;
  --tab-copy-btn-bg:           rgba(0,0,0,0.06);
  --tab-copy-btn-border:       rgba(0,0,0,0.15);
  --tab-copy-btn-color:        #555555;
  --tab-copy-btn-hover-bg:     rgba(0,0,0,0.12);
  --tab-copy-btn-hover-border: rgba(0,0,0,0.3);
  --tab-copy-btn-hover-color:  #111111;
}

/* 系统浅色 + 未手动设置模式时 */
@media (prefers-color-scheme: light) {
  html:not([mode]) {
    --tab-header-bg:             #3a3a3c;
    --tab-header-border:         rgba(255,255,255,0.1);
    --tab-label-color:           rgba(255,255,255,0.5);
    --tab-label-hover:           rgba(255,255,255,0.9);
    --tab-label-active:          #ffffff;
    --tab-active-line:           #f05138;
    --tab-body-bg:               #f0f0f0;
    --tab-gutter-bg:             rgba(0,0,0,0.04);
    --tab-gutter-border:         rgba(0,0,0,0.08);
    --tab-lineno-color:          #999999;
    --tab-copy-btn-bg:           rgba(0,0,0,0.06);
    --tab-copy-btn-border:       rgba(0,0,0,0.15);
    --tab-copy-btn-color:        #555555;
    --tab-copy-btn-hover-bg:     rgba(0,0,0,0.12);
    --tab-copy-btn-hover-border: rgba(0,0,0,0.3);
    --tab-copy-btn-hover-color:  #111111;
  }
}

/* ══════════════════════════════════════
   Tab 导航栏
   ══════════════════════════════════════ */
ul.tab {
  display: flex;
  flex-wrap: wrap;
  list-style: none !important;
  margin: 1.5rem 0 0 0 !important;
  padding: 0 0.5rem !important;
  background: var(--tab-header-bg);
  border-radius: 10px 10px 0 0;
  /* 用 border-bottom 做分隔线，配合 li a 的 margin-bottom:-2px 实现压线效果 */
  border-bottom: 2px solid var(--tab-header-border);
  gap: 0;
}

ul.tab li {
  margin: 0;
  list-style: none !important;
}

ul.tab li a {
  display: inline-block;
  padding: 0.6rem 1.1rem;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: 'Source Sans Pro', 'Microsoft Yahei', sans-serif;
  color: var(--tab-label-color);
  text-decoration: none !important;
  border-bottom: 2px solid transparent;
  /* 关键：负 margin 让 border-bottom 压住 ul.tab 的 border-bottom，实现无缝衔接 */
  margin-bottom: -2px;
  background: transparent;
  cursor: pointer;
  letter-spacing: 0.3px;
  transition: color 0.15s ease, border-color 0.15s ease;
}

ul.tab li a:hover {
  color: var(--tab-label-hover);
  text-decoration: none !important;
  border-bottom-color: rgba(255,255,255,0.25);
}

ul.tab li.active a {
  color: var(--tab-label-active);
  border-bottom-color: var(--tab-active-line);
}

/* ══════════════════════════════════════
   Tab 内容区
   ══════════════════════════════════════ */
ul.tab-content {
  list-style: none !important;
  margin: 0 0 1.5rem 0 !important;
  padding: 0 !important;
  background: var(--tab-body-bg);
  border-radius: 0 0 10px 10px;
  overflow: hidden;
}

ul.tab-content > li {
  display: none;
  margin: 0 !important;
  padding: 0 !important;
  list-style: none !important;
}

ul.tab-content > li.active {
  display: block;
}

/* 内容区内代码块：去掉多余圆角/背景/边距，与容器融合 */
ul.tab-content > li > div.highlighter-rouge,
ul.tab-content > li > div.highlight {
  margin-bottom: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
}

ul.tab-content > li > div.highlighter-rouge pre,
ul.tab-content > li > div.highlight pre {
  border-radius: 0 !important;
  margin: 0 !important;
  background: transparent !important;
  padding: 1rem 1.2rem !important;
}

/* rouge 行号列修正 */
ul.tab-content > li .rouge-table {
  margin: 0;
  background: transparent;
}

ul.tab-content > li .rouge-gutter {
  background: var(--tab-gutter-bg);
  border-right: 1px solid var(--tab-gutter-border);
}

ul.tab-content > li .lineno {
  color: var(--tab-lineno-color);
  border-right: none;
  padding: 0 0.8rem;
}

/* ══════════════════════════════════════
   复制按钮
   ══════════════════════════════════════ */
.jekyll-tabs-copy-btn {
  background: var(--tab-copy-btn-bg);
  border: 1px solid var(--tab-copy-btn-border);
  border-radius: 5px;
  color: var(--tab-copy-btn-color);
  cursor: pointer;
  font-size: 0.72rem;
  padding: 3px 8px;
  line-height: 1.5;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
  z-index: 10;
}

.jekyll-tabs-copy-btn:hover {
  color: var(--tab-copy-btn-hover-color);
  background: var(--tab-copy-btn-hover-bg);
  border-color: var(--tab-copy-btn-hover-border);
}

/* ══════════════════════════════════════
   Toast 提示
   ══════════════════════════════════════ */
#jekyll-tabs-copy-to-clipboard-message {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: #f05138;
  color: #fff;
  padding: 0.45rem 1.2rem;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 9999;
  white-space: nowrap;
}

#jekyll-tabs-copy-to-clipboard-message.show {
  opacity: 1;
}