/* ═══════════════════════════════════════════════════════════
   style.css — 全局样式表
   文件路径: /www/lanmao/static/css/style.css
   说明: 所有组件类、布局、响应式
   风格: 简约商务风 · 极简卡片
   ═══════════════════════════════════════════════════════════ */

@import url('variables.css');

/* ======== 1. Reset & Base ======== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background var(--duration-slow), color var(--duration-slow);
}
a { color: var(--primary-500); text-decoration: none; transition: color var(--duration-fast); }
a:hover { color: var(--primary-600); }
img { max-width: 100%; height: auto; }

/* ======== 2. Layout ======== */
.wrap { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--space-6); width: 100%; }
.wrap-narrow { max-width: var(--max-w-narrow); margin: 0 auto; padding: 0 var(--space-6); width: 100%; }

/* ======== 3. Typography ======== */
h1, h2, h3, h4 { font-weight: var(--weight-bold); line-height: var(--leading-tight); color: var(--text-primary); }
h1 { font-size: var(--text-3xl); letter-spacing: -0.03em; }
h2 { font-size: var(--text-2xl); letter-spacing: -0.02em; }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }
p { color: var(--text-secondary); line-height: var(--leading-relaxed); }
.text-gradient { background: linear-gradient(135deg, var(--primary-400), #7A9CF5, var(--primary-600)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

/* ======== 4. Navbar ======== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: var(--z-nav);
  height: var(--header-h); background: var(--bg-nav);
  backdrop-filter: var(--nav-blur); -webkit-backdrop-filter: var(--nav-blur);
  border-bottom: 1px solid var(--border-light);
  transition: background var(--duration-slow), box-shadow var(--duration-normal);
}
.navbar.scrolled { box-shadow: var(--shadow-md); }
.navbar-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 var(--space-6);
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: var(--space-3); text-decoration: none; color: var(--text-primary); font-weight: var(--weight-bold); font-size: 1.2rem; }
.brand:hover { color: var(--text-primary); opacity: 0.85; }
.brand-icon { width: 36px; height: 36px; border-radius: var(--radius-md); background: linear-gradient(135deg, var(--primary-500), var(--primary-700)); display: flex; align-items: center; justify-content: center; font-size: 18px; box-shadow: 0 2px 8px rgba(30,86,212,0.3); }
.brand-text span { color: var(--text-tertiary); font-weight: var(--weight-normal); }

.nav-list { display: flex; align-items: center; gap: 2px; list-style: none; }
.nav-list a { text-decoration: none; color: var(--text-secondary); font-size: var(--text-sm); font-weight: var(--weight-medium); padding: 8px 18px; border-radius: var(--radius-md); transition: all var(--duration-fast); }
.nav-list a:hover { color: var(--text-primary); background: var(--bg-hover); }
.nav-list a.active { color: var(--primary-500); background: rgba(30,86,212,0.08); font-weight: var(--weight-semibold); }

.nav-actions { display: flex; align-items: center; gap: var(--space-2); }
.nav-icon-btn { width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--border); background: transparent; color: var(--text-tertiary); cursor: pointer; font-size: 16px; display: flex; align-items: center; justify-content: center; transition: all var(--duration-fast); }
.nav-icon-btn:hover { background: var(--bg-hover); color: var(--text-primary); transform: scale(1.08); }

/* ======== 5. Buttons ======== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); padding: 11px 28px; border-radius: var(--radius-md); font-size: var(--text-sm); font-weight: var(--weight-semibold); text-decoration: none; border: none; cursor: pointer; transition: all var(--duration-normal) var(--ease-spring); font-family: inherit; white-space: nowrap; }
.btn-primary { background: linear-gradient(135deg, var(--primary-500), var(--primary-700)); color: #fff; box-shadow: 0 4px 14px rgba(30,86,212,0.25); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(30,86,212,0.4); color: #fff; }
.btn-outline { background: transparent; color: var(--text-secondary); border: 1.5px solid var(--border); }
.btn-outline:hover { color: var(--primary-500); border-color: var(--primary-400); background: rgba(30,86,212,0.04); transform: translateY(-2px); }
.btn-sm { padding: 7px 16px; font-size: var(--text-xs); }
.btn-block { width: 100%; justify-content: center; }
.btn .spinner { display: inline-block; width:18px; height:18px; border:2px solid rgba(255,255,255,0.3); border-top-color:#fff; border-radius:50%; animation:spin 0.6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ======== 6. Section ======== */
.section { padding: var(--space-12) 0; }
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-6); }
.section-header h2 { display: flex; align-items: center; gap: var(--space-2); font-size: var(--text-2xl); }
.section-more { color: var(--text-tertiary); font-size: var(--text-sm); font-weight: var(--weight-medium); display: inline-flex; align-items: center; gap: 4px; transition: all var(--duration-fast); }
.section-more:hover { color: var(--primary-500); gap: 8px; }

/* ======== 7. Post Cards ======== */
.post-grid { display: grid; gap: var(--space-5); }
.post-card { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); transition: all var(--duration-normal); position: relative; }
.post-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, transparent, var(--primary-400), transparent); opacity: 0; transition: opacity var(--duration-normal); }
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary-200); }
[data-theme="dark"] .post-card:hover { border-color: rgba(30,86,212,0.15); }
.post-card:hover::before { opacity: 0.6; }
.post-body { padding: var(--space-6); }
.post-meta { display: flex; align-items: center; gap: var(--space-3); font-size: var(--text-sm); color: var(--text-tertiary); margin-bottom: var(--space-3); flex-wrap: wrap; }
.post-card h3 { font-size: var(--text-xl); margin-bottom: var(--space-2); }
.post-card h3 a { color: var(--text-primary); transition: color var(--duration-fast); }
.post-card h3 a:hover { color: var(--primary-500); }
.post-excerpt { font-size: var(--text-sm); color: var(--text-secondary); line-height: var(--leading-relaxed); margin-bottom: var(--space-4); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.post-footer { display: flex; align-items: center; justify-content: space-between; margin-top: var(--space-4); padding-top: var(--space-4); border-top: 1px solid var(--border-light); }
.read-link { display: inline-flex; align-items: center; gap: 4px; font-size: var(--text-sm); font-weight: var(--weight-medium); color: var(--primary-500); transition: all var(--duration-fast); }
.read-link:hover { gap: 8px; color: var(--primary-600); }

/* ======== 8. Tags ======== */
.tag { display: inline-flex; align-items: center; padding: 3px 12px; border-radius: var(--radius-full); background: rgba(30,86,212,0.06); color: var(--primary-500); font-size: var(--text-xs); font-weight: var(--weight-medium); transition: all var(--duration-fast); border: 1px solid transparent; }
.tag:hover { background: var(--primary-500); color: #fff; border-color: var(--primary-500); }
.tag-active { background: var(--primary-500); color: #fff; }
.tag-sm { padding: 2px 10px; font-size: 0.75rem; }
.tag-wrap { display: flex; flex-wrap: wrap; gap: var(--space-2); }

/* ======== 9. Sidebar ======== */
.sidebar-card { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-6); margin-bottom: var(--space-5); }
.sidebar-card h3 { font-size: var(--text-sm); margin-bottom: var(--space-4); display: flex; align-items: center; gap: var(--space-2); }
.sidebar-card h3::before { content: ''; width: 3px; height: 16px; background: var(--primary-500); border-radius: 2px; flex-shrink: 0; }

/* ======== 10. Post Detail ======== */
.post-full { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-xl); overflow: hidden; }
.post-full-header { padding: var(--space-10) var(--space-10) 0; }
.post-full-title { font-size: var(--text-4xl); font-weight: 800; line-height: var(--leading-tight); margin-bottom: var(--space-3); letter-spacing: -0.03em; }
.post-full-meta { display: flex; align-items: center; gap: var(--space-4); color: var(--text-tertiary); font-size: var(--text-sm); margin-bottom: var(--space-6); flex-wrap: wrap; padding-bottom: var(--space-6); border-bottom: 1px solid var(--border-light); }
.post-content { padding: 0 var(--space-10) var(--space-10); font-size: var(--text-base); line-height: var(--leading-loose); color: var(--text-secondary); }
.post-content h1, .post-content h2, .post-content h3, .post-content h4 { color: var(--text-primary); margin-top: 36px; margin-bottom: var(--space-4); }
.post-content h1 { font-size: 1.7rem; } .post-content h2 { font-size: 1.4rem; padding-bottom: var(--space-2); border-bottom: 1px solid var(--border-light); } .post-content h3 { font-size: 1.2rem; }
.post-content p { margin-bottom: var(--space-5); } .post-content strong { color: var(--text-primary); }
.post-content ul, .post-content ol { margin-bottom: var(--space-5); padding-left: var(--space-6); } .post-content li { margin-bottom: var(--space-2); }
.post-content a { border-bottom: 1px solid rgba(30,86,212,0.15); } .post-content a:hover { border-bottom-color: var(--primary-500); }
.post-content code:not(pre code) { background: rgba(30,86,212,0.08); padding: 2px 8px; border-radius: 4px; font-size: 0.88em; font-family: var(--font-mono); color: var(--primary-500); }
.post-content pre { background: #0B1120; color: #E2E8F0; padding: var(--space-6); border-radius: var(--radius-lg); overflow-x: auto; margin-bottom: var(--space-6); font-size: var(--text-sm); line-height: 1.7; border: 1px solid rgba(255,255,255,0.05); }
[data-theme="dark"] .post-content pre { background: #060B18; }
.post-content pre code { background: none; padding: 0; color: inherit; }
.post-content blockquote { border-left: 3px solid var(--primary-500); padding: var(--space-4) var(--space-6); margin: var(--space-6) 0; background: rgba(30,86,212,0.03); border-radius: 0 var(--radius-md) var(--radius-md) 0; color: var(--text-secondary); }
.post-content table { width: 100%; border-collapse: collapse; margin: var(--space-6) 0; font-size: var(--text-sm); border-radius: var(--radius-md); overflow: hidden; }
.post-content th, .post-content td { padding: var(--space-2) var(--space-4); border: 1px solid var(--border); text-align: left; }
.post-content th { background: rgba(30,86,212,0.04); font-weight: var(--weight-semibold); color: var(--text-primary); }
.post-content img { max-width: 100%; border-radius: var(--radius-lg); margin: 28px auto; display: block; box-shadow: var(--shadow-md); }

.post-nav { display: flex; justify-content: space-between; gap: var(--space-4); padding: var(--space-6) var(--space-10) var(--space-10); border-top: 1px solid var(--border-light); }
.post-nav-link { flex: 1; padding: var(--space-5); border-radius: var(--radius-lg); border: 1px solid var(--border); transition: all var(--duration-fast); text-decoration: none; background: var(--bg-body); }
.post-nav-link:hover { border-color: var(--primary-300); box-shadow: var(--shadow-sm); }
[data-theme="dark"] .post-nav-link:hover { border-color: rgba(30,86,212,0.2); }
.post-nav-next { text-align: right; }
.post-nav-label { font-size: var(--text-xs); color: var(--text-tertiary); margin-bottom: 4px; display: block; }
.post-nav-title { font-size: var(--text-sm); font-weight: var(--weight-semibold); color: var(--text-primary); }
.post-nav-link:hover .post-nav-title { color: var(--primary-500); }

/* ======== 11. Tools Grid ======== */
.tools-grid { display: grid; gap: var(--space-4); grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.tools-grid-mini { display: grid; gap: var(--space-4); grid-template-columns: repeat(3, 1fr); }
.tool-card { display: flex; align-items: center; gap: var(--space-5); background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-6); text-decoration: none; color: var(--text-primary); transition: all var(--duration-normal); position: relative; }
.tool-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, transparent, var(--primary-400), transparent); opacity: 0; transition: opacity var(--duration-normal); }
.tool-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary-200); }
.tool-card:hover::before { opacity: 0.6; }
.tool-card-mini { display: flex; flex-direction: column; align-items: center; gap: var(--space-3); background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-8) var(--space-5); text-decoration: none; color: var(--text-primary); transition: all var(--duration-normal); position: relative; }
.tool-card-mini::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, transparent, var(--primary-400), transparent); opacity: 0; transition: opacity var(--duration-normal); }
.tool-card-mini:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary-200); }
.tool-card-mini:hover::before { opacity: 0.6; }
.tool-icon-big { font-size: 2.4rem; display: block; }
.tool-card-mini .tool-icon { font-size: 2.6rem; display: block; }
.tool-card-mini .tool-label { font-weight: var(--weight-semibold); font-size: var(--text-sm); }
.tool-card-body { flex: 1; min-width: 0; }
.tool-card-body h3 { font-size: var(--text-base); margin-bottom: 4px; }
.tool-card-body p { font-size: var(--text-xs); color: var(--text-tertiary); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.tool-card .arrow { color: var(--text-tertiary); font-size: 1.2rem; transition: transform var(--duration-fast); flex-shrink: 0; }
.tool-card:hover .arrow { transform: translateX(4px); color: var(--primary-500); }

/* ======== 12. Hero ======== */
.hero { padding: 120px 0 var(--space-16); text-align: center; position: relative; overflow: hidden; }
.hero-badge { display: inline-flex; align-items: center; gap: var(--space-2); padding: 5px 16px 5px 10px; border-radius: var(--radius-full); background: rgba(30,86,212,0.06); border: 1px solid rgba(30,86,212,0.1); font-size: var(--text-xs); color: var(--primary-500); font-weight: var(--weight-semibold); margin-bottom: var(--space-6); }
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: #10B981; animation: dotPulse 2s ease-in-out infinite; }
@keyframes dotPulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.3; transform: scale(0.8); } }
.hero h1 { font-size: 3.2rem; margin-bottom: var(--space-4); letter-spacing: -0.04em; line-height: 1.15; }
.hero p { font-size: var(--text-lg); color: var(--text-secondary); max-width: 560px; margin: 0 auto var(--space-8); line-height: 1.8; }
.hero-actions { display: flex; gap: var(--space-3); justify-content: center; flex-wrap: wrap; }

/* ======== 13. Stats Bar ======== */
.stats-bar { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); margin-bottom: var(--space-8); }
.stat-item { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-6); text-align: center; transition: all var(--duration-normal); }
.stat-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.stat-num { font-size: 1.8rem; font-weight: 800; color: var(--primary-500); line-height: 1; margin-bottom: 4px; }
.stat-label { font-size: var(--text-xs); color: var(--text-tertiary); }

/* ======== 14. Forms ======== */
.form-group { margin-bottom: var(--space-5); }
.form-label { display: block; font-size: var(--text-sm); font-weight: var(--weight-semibold); margin-bottom: var(--space-2); color: var(--text-primary); }
.form-input, .form-select, .form-textarea { width: 100%; padding: 10px 14px; border: 1.5px solid var(--border); border-radius: var(--radius-md); background: var(--bg-body); color: var(--text-primary); font-size: var(--text-sm); font-family: inherit; outline: none; transition: border-color var(--duration-fast); }
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--primary-400); box-shadow: 0 0 0 3px rgba(30,86,212,0.06); }
.form-textarea { min-height: 120px; resize: vertical; }

/* ======== 15. Footer ======== */
.site-footer { margin-top: 80px; background: var(--bg-surface); border-top: 1px solid var(--border); padding: var(--space-12) 0 var(--space-8); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-10); max-width: var(--max-w); margin: 0 auto; padding: 0 var(--space-6); }
.footer-brand p { font-size: var(--text-sm); color: var(--text-tertiary); line-height: 1.7; max-width: 280px; margin-top: var(--space-3); }
.footer-col h4 { font-size: var(--text-sm); margin-bottom: var(--space-4); color: var(--text-primary); }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: var(--space-2); }
.footer-col a { color: var(--text-tertiary); font-size: var(--text-sm); transition: color var(--duration-fast); }
.footer-col a:hover { color: var(--primary-500); }
.footer-bottom { max-width: var(--max-w); margin: var(--space-8) auto 0; padding: var(--space-5) var(--space-6) 0; border-top: 1px solid var(--border-light); text-align: center; font-size: var(--text-xs); color: var(--text-tertiary); }

/* ======== 16. 404 ======== */
.error-page { text-align: center; padding: 100px 20px; }
.error-code { font-size: 5rem; font-weight: 800; background: linear-gradient(135deg, var(--primary-400), var(--primary-600)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; margin-bottom: var(--space-3); }
.error-message { font-size: var(--text-lg); color: var(--text-secondary); margin-bottom: 36px; }

/* ======== 17. Empty State ======== */
.empty-state { text-align: center; padding: 80px 20px; color: var(--text-tertiary); }
.empty-state .icon { font-size: 3.6rem; display: block; margin-bottom: var(--space-4); }
.empty-state p { font-size: var(--text-base); color: var(--text-tertiary); }

/* ======== 18. Progress Bar ======== */
.progress-bar { width:100%; height:6px; background:var(--bg-hover); border-radius:3px; overflow:hidden; }
.progress-fill { height:100%; border-radius:3px; transition:width 0.6s ease-out; }
.progress-fill.success { background:var(--success-500); }
.progress-fill.primary { background:var(--primary-500); }
.progress-fill.warning { background:var(--accent-500); }
.progress-fill.danger { background:var(--danger-500); }

.status-dot { display:inline-block; width:8px; height:8px; border-radius:50%; }
.status-dot.planning { background:var(--text-tertiary); }
.status-dot.active { background:var(--success-500); }
.status-dot.review { background:var(--accent-500); }
.status-dot.completed { background:var(--primary-500); }
.status-dot.archived { background:var(--text-tertiary); opacity:0.5; }

/* ======== 19. Animations ======== */
.fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.fade-up.show { opacity: 1; transform: translateY(0); }

/* ======== 19. Utilities ======== */
.text-muted { color: var(--text-tertiary); }
.text-center { text-align: center; }

/* ======== 20. Scrollbar ======== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-tertiary); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* ======== 21. Responsive ======== */
@media (max-width: 896px) {
  .hero h1 { font-size: 2.2rem; } .hero { padding: 100px 0 var(--space-10); }
  .post-full-header { padding: var(--space-6) var(--space-6) 0; }
  .post-full-title { font-size: var(--text-3xl); }
  .post-content { padding: 0 var(--space-6) var(--space-6); }
  .post-nav { flex-direction: column; padding: var(--space-4) var(--space-6) var(--space-6); } .post-nav-next { text-align: left; }
  .tools-grid-mini { grid-template-columns: repeat(2, 1fr); }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
}
@media (max-width: 640px) {
  .nav-list { display: none; }
  .nav-list.open { display: flex; flex-direction: column; position: absolute; top: var(--header-h); left: 0; right: 0; background: var(--bg-nav); backdrop-filter: var(--nav-blur); border-bottom: 1px solid var(--border); padding: var(--space-3); gap: 4px; box-shadow: var(--shadow-lg); }
  .nav-list.open a { padding: var(--space-3) var(--space-4); }
  .hero h1 { font-size: 1.7rem; } .hero p { font-size: var(--text-base); }
  .tools-grid-mini { grid-template-columns: 1fr; } .tools-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); } .footer-grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .post-body { padding: var(--space-5); }
  .wrap { padding: 0 var(--space-4); } .navbar-inner { padding: 0 var(--space-4); }
  .section { padding: var(--space-8) 0; }
}