/* ============================================================
   dockerlab.online — 全局样式
   暗色 GitHub 风格主题
   ============================================================ */

/* ---- CSS 变量 ---- */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --border-primary: #21262d;
  --border-secondary: #30363d;
  --text-primary: #c9d1d9;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --accent-blue: #58a6ff;
  --accent-green: #3fb950;
  --accent-pink: #db61a2;
  --accent-gold: #d29922;
  --accent-red: #ff7b72;
  --code-bg: #0d1117;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-card: 0 4px 20px rgba(88, 166, 255, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.7;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ---- 导航栏 ---- */
.nav-bar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
  padding: 0 20px;
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
}

.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
}

.nav-brand {
  font-weight: 600;
  font-size: 16px;
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--text-secondary);
  transition: all 0.15s;
}

.nav-links a:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  text-decoration: none;
}

.nav-links a.active {
  background: var(--bg-tertiary);
  color: var(--accent-blue);
}

/* 移动端导航 */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 20px;
  cursor: pointer;
  padding: 4px 8px;
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 52px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
    flex-direction: column;
    padding: 8px 20px;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-toggle {
    display: block;
  }
}

/* ---- 页面头部 ---- */
.page-header {
  text-align: center;
  padding: 60px 20px 40px;
  border-bottom: 1px solid var(--border-primary);
}

.page-header h1 {
  font-size: 36px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.page-header .subtitle {
  color: var(--text-secondary);
  font-size: 16px;
}

.page-header .badge {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-secondary);
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-blue);
}

/* ---- 内容容器 ---- */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

/* ---- 卡片 ---- */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  padding: 24px;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.card .card-icon { font-size: 32px; margin-bottom: 12px; }
.card h3 { color: var(--accent-blue); font-size: 16px; margin-bottom: 4px; }
.card p { color: var(--text-secondary); font-size: 14px; margin-bottom: 8px; }

/* ---- 标签 ---- */
.tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 500;
  margin-bottom: 8px;
}

.tag-blue { background: #1b2d36; color: var(--accent-blue); border: 1px solid #388bfd; }
.tag-green { background: #1b3623; color: var(--accent-green); border: 1px solid #2ea043; }
.tag-pink { background: #361b2d; color: var(--accent-pink); border: 1px solid #bf4b8a; }
.tag-gold { background: #36211b; color: var(--accent-gold); border: 1px solid #bd8b19; }
.tag-ghost { background: var(--bg-tertiary); color: var(--text-primary); border: 1px solid var(--border-secondary); }

/* ---- 按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-secondary);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-sans);
}

.btn:hover {
  background: var(--border-secondary);
  color: #fff;
}

.btn-primary {
  background: #1a3a5c;
  border-color: #388bfd;
  color: var(--accent-blue);
}

.btn-primary:hover {
  background: #1b4a7a;
}

/* ---- 服务器信息区 ---- */
.server-info {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  padding: 24px;
}

.server-info h3 {
  color: var(--text-secondary);
  font-size: 13px;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tag {
  padding: 4px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-secondary);
  border-radius: 16px;
  font-size: 13px;
  color: var(--text-primary);
  white-space: nowrap;
}

.tech-tag.hl-green { border-color: var(--accent-green); color: var(--accent-green); }
.tech-tag.hl-blue { border-color: var(--accent-blue); color: var(--accent-blue); }
.tech-tag.hl-pink { border-color: var(--accent-pink); color: var(--accent-pink); }

/* ---- 资源链接 ---- */
.resources {
  margin-top: 32px;
}

.resources h2 {
  color: var(--text-secondary);
  font-size: 13px;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.res-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.res-link {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: 10px;
  padding: 14px 18px;
  text-decoration: none;
  color: var(--accent-blue);
  font-size: 13px;
  transition: all 0.2s;
}

.res-link:hover {
  border-color: var(--accent-blue);
  background: #1a2433;
  text-decoration: none;
}

.res-link .res-icon { font-size: 20px; flex-shrink: 0; }
.res-link .res-info { display: flex; flex-direction: column; }
.res-link .res-name { font-weight: 500; }
.res-link .res-desc { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

/* ---- 代码块 ---- */
pre {
  background: var(--code-bg);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-sm);
  padding: 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  margin: 10px 0 16px;
  position: relative;
}

pre code {
  font-family: var(--font-mono);
  color: var(--text-primary);
}

/* 语法高亮 */
.syn-kw { color: var(--accent-red); }
.syn-str { color: #a5d6ff; }
.syn-cm { color: var(--text-muted); font-style: italic; }
.syn-opt { color: #d2a8ff; }
.syn-val { color: var(--accent-green); }
.syn-name { color: var(--accent-blue); }

/* 复制按钮 */
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-secondary);
  color: var(--text-secondary);
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s;
}

pre:hover .copy-btn {
  opacity: 1;
}

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

/* ---- 提示框 ---- */
.tip-box, .warn-box {
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 13px;
  margin: 12px 0;
}

.tip-box {
  background: #1b3623;
  border: 1px solid #2ea043;
  color: #7ee787;
}

.warn-box {
  background: #36211b;
  border: 1px solid #bd8b19;
  color: var(--accent-gold);
}

/* ---- 页脚 ---- */
.footer {
  text-align: center;
  padding: 20px;
  color: var(--text-muted);
  font-size: 12px;
  border-top: 1px solid var(--border-primary);
}

/* ---- 辅助类 ---- */
.text-muted { color: var(--text-secondary); }
.text-blue { color: var(--accent-blue); }
.text-green { color: var(--accent-green); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }

/* ---- 多页面通用布局 ---- */

/* 两栏布局（roadmap 等） */
.split-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 24px;
  align-items: start;
}

@media (max-width: 768px) {
  .split-layout {
    grid-template-columns: 1fr;
  }
}

/* 详情面板 */
.detail-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  min-height: 400px;
  position: sticky;
  top: 72px;
}

.detail-panel .empty-state {
  color: var(--text-muted);
  text-align: center;
  padding: 60px 20px;
  font-size: 14px;
}

.detail-panel h2 {
  color: var(--accent-blue);
  font-size: 20px;
  margin-bottom: 4px;
}

.detail-panel h3 {
  color: var(--accent-green);
  font-size: 15px;
  margin: 24px 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-primary);
}

.detail-panel h3:first-child { margin-top: 0; }

.detail-panel p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 12px;
}

.detail-panel ul {
  list-style: none;
  margin: 8px 0 16px;
}

.detail-panel ul li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 6px;
  font-size: 14px;
  color: var(--text-secondary);
}

.detail-panel ul li::before {
  content: '\2022';
  position: absolute;
  left: 4px;
  color: var(--accent-blue);
}

/* ---- 搜索框 ---- */
.search-box {
  position: relative;
  margin-bottom: 24px;
}

.search-box input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 0.2s;
}

.search-box input:focus {
  border-color: var(--accent-blue);
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box .search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 16px;
  pointer-events: none;
}

.search-kbd {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  padding: 2px 6px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: 4px;
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ---- 动画 ---- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.3s ease;
}