/* ============================================
   ohos-sdd-site 全局样式
   设计风格：浅色背景 + 卡片式布局 + 青绿主题
   ============================================ */

:root {
  /* 色彩系统 */
  --color-primary: #0d9488;       /* 青绿主色 */
  --color-primary-light: #14b8a6;
  --color-primary-dark: #0f766e;
  --color-primary-bg: #f0fdfa;
  
  --color-ink: #1e293b;           /* 墨色文字 */
  --color-ink-light: #64748b;     /* 次级文字 */
  --color-ink-muted: #94a3b8;     /* 占位文字 */
  
  --color-bg: #ffffff;
  --color-bg-soft: #f8fafc;
  --color-bg-card: #ffffff;
  --color-border: #e2e8f0;
  
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #3b82f6;
  
  /* 阶段色彩 */
  --stage-intake: #3b82f6;        /* 需求导入 蓝色 */
  --stage-design: #8b5cf6;        /* 设计 紫色 */
  --stage-delivery: #0d9488;      /* 交付 青绿 */
  
  /* 间距 */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;
  
  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
  
  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "JetBrains Mono", "Consolas", monospace;
  
  /* 布局 */
  --max-width: 960px;
  --sidebar-width: 240px;
}

/* ===== Reset ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-bg-soft);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--color-primary-dark);
}

/* ===== 导航栏 ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-ink);
}

.navbar-brand .logo {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1rem;
}

.navbar-links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.navbar-toggle {
  display: none;
}

.navbar-links a {
  color: var(--color-ink-light);
  font-size: 0.9rem;
  font-weight: 500;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.navbar-links a:hover,
.navbar-links a.active {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

/* ===== 主容器 ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

/* ===== Hero 区域 ===== */
.hero {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-ink);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.hero .subtitle {
  font-size: 1.15rem;
  color: var(--color-ink-light);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

.hero .badge {
  display: inline-block;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  margin-top: var(--space-xl);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-xl);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--color-bg);
  color: var(--color-ink);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: 0.85rem;
}

/* ===== 卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all 0.2s;
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.card-icon {
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.card p {
  font-size: 0.9rem;
  color: var(--color-ink-light);
  line-height: 1.5;
}

/* ===== 流程时间线 ===== */
.flow-timeline {
  position: relative;
  margin: var(--space-xl) 0;
  padding-left: 2rem;
}

.flow-timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.flow-step {
  position: relative;
  padding: var(--space-md) 0 var(--space-lg) var(--space-lg);
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}

.flow-step:hover {
  background: var(--color-bg-soft);
}

.flow-step::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: var(--space-md);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 3px solid var(--dot-color, var(--color-primary));
  z-index: 1;
}

.flow-step.completed::before {
  background: var(--color-primary);
}

.flow-step .step-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xs);
}

.flow-step .step-id {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-bg);
  padding: 2px var(--space-sm);
  border-radius: var(--radius-full);
}

.flow-step .step-title {
  font-weight: 600;
  font-size: 1rem;
}

.flow-step .step-desc {
  font-size: 0.875rem;
  color: var(--color-ink-light);
}

.flow-step .step-artifacts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}

.flow-step .artifact-tag {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  padding: 2px var(--space-sm);
  border-radius: var(--radius-sm);
  color: var(--color-ink-light);
}

/* 可点击的产物标签 */
.flow-step .artifact-linked {
  color: var(--color-primary);
  border-color: var(--color-primary-light);
  background: var(--color-primary-bg);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}

.flow-step .artifact-linked:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* 可点击的 Skill 名称 */
.flow-step .skill-linked {
  text-decoration: none;
}

.flow-step .skill-linked code {
  color: var(--color-primary);
  transition: color 0.2s;
}

.flow-step .skill-linked:hover code {
  text-decoration: underline;
}

/* Skill tooltip 容器 — inline 包裹 */
.skill-tip-wrap {
  position: relative;
  display: inline-block;
}

/* tooltip 弹层 — absolute 定位在 wrap 内 */
.skill-tip-popup {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  width: 360px;
  max-width: 90vw;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  padding: 12px 14px;
  /* 透明 padding-bottom 桥接 link 与 tooltip 之间的 8px 间隙，防止 mouseleave 闪烁 */
  padding-bottom: 12px;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--color-ink);
  z-index: 1000;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.15s, transform 0.15s;
}

/* 透明桥接层：覆盖 tooltip 底部到 link 之间的间隙 */
.skill-tip-popup::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 12px;
  /* 透明区域，仅用于扩展 mouseleave 检测范围 */
}

.flow-step .skill-linked code {
  color: var(--color-primary);
  transition: color 0.2s;
}

.flow-step .skill-linked:hover code {
  text-decoration: underline;
}

/* ===== Gate 标识 ===== */
.gate-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px var(--space-sm);
  border-radius: var(--radius-full);
}

.gate-pass { background: #dcfce7; color: #166534; }
.gate-warn { background: #fef3c7; color: #92400e; }
.gate-fail { background: #fee2e2; color: #991b1b; }

/* ===== 交互演示区域 ===== */
.demo-panel {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: var(--space-xl) 0;
}

.demo-header {
  background: var(--color-bg-soft);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.demo-header .title {
  font-weight: 600;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.demo-header .step-counter {
  font-size: 0.8rem;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
}

.demo-body {
  padding: var(--space-lg);
}

.demo-output {
  background: var(--color-ink);
  color: #e2e8f0;
  border-radius: var(--radius-sm);
  padding: var(--space-lg);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  margin-top: var(--space-md);
  overflow-x: auto;
  white-space: pre-wrap;
  min-height: 120px;
}

.demo-output .prompt { color: #94a3b8; }
.demo-output .ai { color: #2dd4bf; }
.demo-output .user { color: #fbbf24; }
.demo-output .gate { color: #f87171; font-weight: bold; }
.demo-output .artifact { color: #818cf8; }

.demo-controls {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

/* ===== Section 通用 ===== */
.section {
  padding: var(--space-xl) 0;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  text-align: center;
}

.section-desc {
  text-align: center;
  color: var(--color-ink-light);
  font-size: 1rem;
  max-width: 560px;
  margin: 0 auto var(--space-xl);
}

/* ===== 表格 ===== */
.table-wrap {
  overflow-x: auto;
  margin: var(--space-lg) 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

th, td {
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

th {
  font-weight: 600;
  color: var(--color-ink-light);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

tbody tr:hover {
  background: var(--color-bg-soft);
}

/* 表格内的可点击产物链接 */
.table-wrap .artifact-linked {
  color: var(--color-primary);
  text-decoration: none;
}

.table-wrap .artifact-linked code {
  transition: color 0.2s;
}

.table-wrap .artifact-linked:hover code {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* ===== 页脚 ===== */
.footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  color: var(--color-ink-muted);
  font-size: 0.85rem;
}

.footer a {
  color: var(--color-ink-light);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .navbar-inner {
    padding: var(--space-sm) var(--space-md);
    flex-wrap: wrap;
  }
  
  .navbar-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
  }
  
  .navbar-toggle span {
    width: 22px;
    height: 2px;
    background: var(--color-ink);
    border-radius: 1px;
    transition: all 0.2s;
  }
  
  .navbar-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
  }
  .navbar-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  .navbar-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
  }
  
  .navbar-links {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0;
    padding-bottom: var(--space-sm);
  }
  
  .navbar-links.show {
    display: flex;
  }
  
  .navbar-links li {
    padding: var(--space-sm) 0;
    border-top: 1px solid var(--color-border);
  }
  
  .navbar-links a {
    display: block;
    padding: var(--space-xs) 0;
  }
  
  .hero h1 {
    font-size: 1.75rem;
  }
  
  .hero .subtitle {
    font-size: 1rem;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .container {
    padding: var(--space-lg) var(--space-md);
  }
}