/* @theme tvu-dark */

/*
 * TVU Dark — Marp theme for all TVU consumer-product retrospects
 * 真源: tvu-design-system/templates/consumer-product/marp-themes/tvu-dark.css
 * 改主题 → 改本文件 → 所有 consumer 的 .marprc.yml 引用同路径，下次导出即生效
 *
 * 颜色 token 同步自 tvu-design-system/src/tokens/variables.css (dark mode)
 *   --brand        #2fb54e
 *   --brand-hover  #41c760
 *   --brand-disable #1a652c
 *   --msg-bg-brand #19311e
 */

/* 不 @import default — 默认主题用 GitHub Markdown CSS，
   会以 `div#:$p > svg > foreignObject > section` 超高优先级强制白底深字，
   把所有自定义规则压住。tvu-dark 必须独立自包含。 */

:root {
  --tvu-bg:           #0a0e14;
  --tvu-bg-elevated:  #161b22;
  --tvu-bg-card:      #1a1f2e;
  --tvu-border:       #30363d;
  --tvu-border-soft:  #21262d;
  --tvu-text:         #e6edf3;
  --tvu-text-muted:   #8b949e;
  --tvu-text-dim:     #6e7681;
  --tvu-brand:        #2fb54e;
  --tvu-brand-hover:  #41c760;
  --tvu-brand-soft:   #19311e;
  --tvu-brand-glow:   rgba(47, 181, 78, 0.25);
  --tvu-danger:       #f85149;
  --tvu-warn:         #d29922;
  --tvu-mono:         'JetBrains Mono', 'SF Mono', 'Menlo', monospace;
  --tvu-sans:         -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

section {
  background: var(--tvu-bg);
  color: var(--tvu-text);
  font-family: var(--tvu-sans);
  font-size: 20px;
  padding: 44px 56px;
  line-height: 1.45;
  letter-spacing: 0.01em;
  position: relative;
}

/* 左侧 accent bar 已移除 (2026-05-21 用户反馈"看起来不整洁") — 保留干净边距 */

/* === Headings === */

h1 {
  color: var(--tvu-brand);
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 18px 0;
  letter-spacing: -0.01em;
  position: relative;
  padding-bottom: 12px;
}
h1::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 60px;
  height: 3px;
  background: var(--tvu-brand);
  box-shadow: 0 0 12px var(--tvu-brand-glow);
}

h2 {
  color: var(--tvu-text);
  font-size: 26px;
  font-weight: 600;
  margin: 0 0 14px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--tvu-border);
  position: relative;
}
h2::before {
  content: '▍';
  color: var(--tvu-brand);
  margin-right: 8px;
  font-weight: bold;
}

h3 {
  color: var(--tvu-text);
  font-size: 22px;
  font-weight: 600;
  margin: 14px 0 8px 0;
}

h4 {
  color: var(--tvu-brand-hover);
  font-size: 19px;
  font-weight: 600;
  margin: 12px 0 6px 0;
}

/* === Body text === */

p, li {
  color: var(--tvu-text);
}

strong {
  color: var(--tvu-brand-hover);
  font-weight: 600;
}

em {
  color: var(--tvu-text-muted);
  font-style: italic;
}

a, a:visited {
  color: var(--tvu-brand-hover);
  text-decoration: none;
  border-bottom: 1px dotted var(--tvu-brand);
}

/* === Lists === */

ul, ol {
  padding-left: 22px;
}

li {
  margin: 4px 0;
}

li::marker {
  color: var(--tvu-brand);
}

ul li::marker {
  content: '▸ ';
}

/* === Blockquote (key insight) === */

blockquote {
  background: var(--tvu-brand-soft);
  border-left: 4px solid var(--tvu-brand);
  border-radius: 0 6px 6px 0;
  padding: 12px 18px;
  margin: 12px 0;
  color: var(--tvu-text);
  font-style: normal;
  position: relative;
}

blockquote::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--tvu-brand-glow) 0%, transparent 30%);
  border-radius: 0 6px 6px 0;
  pointer-events: none;
}

blockquote > * {
  position: relative;
}

blockquote strong {
  color: var(--tvu-brand);
}

/* === Code === */

code {
  background: var(--tvu-bg-elevated);
  color: var(--tvu-brand-hover);
  font-family: var(--tvu-mono);
  font-size: 0.88em;
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--tvu-border-soft);
}

pre {
  background: var(--tvu-bg-elevated);
  border: 1px solid var(--tvu-border);
  border-left: 3px solid var(--tvu-brand);
  border-radius: 6px;
  padding: 18px 22px;
  font-family: var(--tvu-mono);
  font-size: 20px;
  overflow-x: auto;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--tvu-text);
}

/* === Tables (card-style with brand accent header) === */

table {
  border-collapse: separate;
  border-spacing: 0;
  margin: 12px 0;
  width: 100%;
  font-size: 18px;
  background: var(--tvu-bg-elevated);
  border: 1px solid var(--tvu-border);
  border-radius: 8px;
  overflow: hidden;
}

thead {
  background: linear-gradient(180deg, var(--tvu-brand-soft) 0%, var(--tvu-bg-elevated) 100%);
}

th {
  color: var(--tvu-brand-hover);
  font-weight: 600;
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--tvu-brand);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: 0.85em;
}

td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--tvu-border-soft);
  color: var(--tvu-text);
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.015);
}

/* === Horizontal rule === */

hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--tvu-border) 20%, var(--tvu-border) 80%, transparent 100%);
  margin: 24px 0;
}

/* === Lead slide (cover / chapter) === */

section.lead {
  background:
    radial-gradient(ellipse at top, var(--tvu-brand-glow) 0%, transparent 50%),
    var(--tvu-bg);
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

section.lead::before {
  display: none;
}

section.lead h1 {
  font-size: 72px;
  background: linear-gradient(135deg, var(--tvu-brand-hover) 0%, var(--tvu-brand) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0 0 16px 0;
  padding: 0;
  letter-spacing: -0.02em;
}

section.lead h1::after {
  display: none;
}

section.lead h2 {
  color: var(--tvu-text);
  font-size: 30px;
  font-weight: 400;
  border: none;
  padding: 0;
  margin: 0 0 32px 0;
}

section.lead h2::before {
  display: none;
}

section.lead p {
  font-size: 22px;
  color: var(--tvu-text);
  margin: 8px 0;
}

section.lead strong {
  color: var(--tvu-text);
  font-weight: 600;
}

/* 移除 section.lead::after 装饰条 (2026-05-21 用户反馈)
   原因: 与 Marp pagination 的 ::after 冲突, 在 Thank You 等 lead 页造成内容洗白
   保留干净的 lead 视觉只用 top radial gradient */

/* === Header / footer === */

header {
  color: var(--tvu-text-dim);
  font-size: 14px;
  font-family: var(--tvu-mono);
  letter-spacing: 0.05em;
  padding: 16px 70px 0;
}

footer {
  color: var(--tvu-text-dim);
  font-size: 14px;
  font-family: var(--tvu-mono);
  letter-spacing: 0.05em;
  padding: 0 70px 16px;
}

/* === Pagination === */

section::after {
  color: var(--tvu-text-dim);
  font-family: var(--tvu-mono);
  font-size: 14px;
  bottom: 20px;
  right: 30px;
}

/* === Checklist (- [ ] / - [x]) styling === */

ul li input[type="checkbox"] {
  margin-right: 6px;
  accent-color: var(--tvu-brand);
}

/* === Highlight / emoji boost === */

/* Make 🎨 📋 🔀 ✅ ⏳ pop a bit */
section li:has(> p:first-child:contains('✅')) { color: var(--tvu-brand-hover); }