/* ─────────────────────────────────────────
   根哥AI · main.css
   ───────────────────────────────────────── */

/* ── 设计令牌 ── */
:root {
  --bg:           #0a0c10;
  --bg2:          #0e1117;
  --bg3:          #141820;
  --surface:      #161b26;
  --surface2:     #1c2333;
  --border:       rgba(255,255,255,0.07);
  --border2:      rgba(255,255,255,0.12);
  --text:         #e8eaf0;
  --text2:        #8b92a5;
  --text3:        #5a6070;
  --accent:       #6366f1;
  --accent-glow:  rgba(99,102,241,0.35);
  --accent2:      #8b5cf6;
  --green:        #22c55e;
  --orange:       #f97316;
  --yellow:       #eab308;
  --pink:         #ec4899;
  --cyan:         #06b6d4;
  --red:          #ef4444;

  /* 分类色 */
  --cat-skills:   #6366f1;
  --cat-mcp:      #8b5cf6;
  --cat-llm:      #06b6d4;
  --cat-token:    #f97316;
  --cat-agent:    #22c55e;
  --cat-cli:      #ec4899;

  --radius:       14px;
  --radius-sm:    8px;
  --radius-lg:    20px;
  --shadow:       0 4px 24px rgba(0,0,0,0.45);
  --shadow-lg:    0 12px 48px rgba(0,0,0,0.6);
  --transition:   0.22s cubic-bezier(0.4,0,0.2,1);

  --navbar-h:     64px;
  --font:         'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;
}

/* Light theme */
[data-theme="light"] {
  --bg:      #f5f7fc;
  --bg2:     #eef1f8;
  --bg3:     #e6eaf5;
  --surface: #ffffff;
  --surface2:#f0f3ff;
  --border:  rgba(0,0,0,0.07);
  --border2: rgba(0,0,0,0.12);
  --text:    #1a1d2e;
  --text2:   #4b5168;
  --text3:   #8b92a5;
  --shadow:  0 4px 24px rgba(0,0,0,0.10);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.16);
  --accent-glow: rgba(99,102,241,0.18);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 15px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font); }
select { font-family: var(--font); }
img { max-width: 100%; display: block; }

/* ── 容器 ── */
.container {
  width: 100%;
  max-width: 1380px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ═══════════════════════════════════════
   导航栏
═══════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--navbar-h);
  z-index: 1000;
  background: rgba(10,12,16,0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
[data-theme="light"] .navbar {
  background: rgba(245,247,252,0.85);
}
.navbar.scrolled {
  background: rgba(10,12,16,0.95);
  box-shadow: 0 1px 24px rgba(0,0,0,0.3);
}
[data-theme="light"] .navbar.scrolled {
  background: rgba(245,247,252,0.97);
}
.navbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
  text-decoration: none;
}
.logo-img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: contain;
  flex-shrink: 0;
  filter: drop-shadow(0 0 8px var(--accent-glow));
}
.logo-text {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
}
.logo-text-ai {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo-badge {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--accent-glow);
  color: var(--accent);
  border: 1px solid rgba(99,102,241,0.3);
  margin-top: -8px;
}
/* 页脚 logo */
.footer-logo {
  width: 20px;
  height: 20px;
  border-radius: 5px;
  object-fit: contain;
  opacity: .85;
}

/* Nav links */
.nav-links {
  display: flex;
  gap: 2px;
  flex: 1;
}
.nav-link {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text2);
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: var(--text); background: var(--surface); }
.nav-link.active { color: var(--accent); background: var(--accent-glow); }

/* 搜索 */
.nav-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.search-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.search-icon {
  position: absolute;
  left: 10px;
  width: 16px;
  height: 16px;
  color: var(--text3);
  pointer-events: none;
}
.search-input {
  height: 36px;
  width: 220px;
  padding: 0 36px 0 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 13.5px;
  outline: none;
  transition: border var(--transition), box-shadow var(--transition), width var(--transition);
}
.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  width: 280px;
}
.search-input::placeholder { color: var(--text3); }
.search-kbd {
  position: absolute;
  right: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text3);
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
}

/* 主题切换 */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  color: var(--text2);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: color var(--transition), background var(--transition);
}
.theme-toggle:hover { color: var(--text); background: var(--surface2); }
.theme-toggle svg { width: 17px; height: 17px; }
.icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }

/* ═══════════════════════════════════════
   Hero
═══════════════════════════════════════ */
.hero {
  padding-top: calc(var(--navbar-h) + 64px);
  padding-bottom: 64px;
  position: relative;
  overflow: hidden;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 380px;
  align-items: center;
  gap: 48px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--green);
  background: rgba(34,197,94,0.1);
  border: 1px solid rgba(34,197,94,0.25);
  border-radius: 20px;
  padding: 5px 14px;
  margin-bottom: 20px;
  font-weight: 500;
}
.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
  animation: pulse-anim 2s infinite;
  flex-shrink: 0;
}
@keyframes pulse-anim {
  0%,100% { opacity:1; transform:scale(1); }
  50% { opacity:.5; transform:scale(1.4); }
}
.hero-title {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -1.5px;
  margin-bottom: 18px;
  color: var(--text);
}
.gradient-text {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 40%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 16px;
  color: var(--text2);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 560px;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
}
.stat-item { padding: 0 28px 0 0; }
.stat-item:first-child { padding-left: 0; }
.stat-num {
  display: block;
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-size: 12px;
  color: var(--text3);
  font-weight: 500;
}
.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border2);
  margin: 0 28px 0 0;
}

/* Hero Visual */
.hero-visual {
  position: relative;
  height: 280px;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.45;
  animation: orb-float 8s ease-in-out infinite;
}
.orb1 {
  width: 220px; height: 220px;
  background: radial-gradient(circle, #6366f1, transparent 70%);
  top: 20px; left: 40px;
  animation-delay: 0s;
}
.orb2 {
  width: 160px; height: 160px;
  background: radial-gradient(circle, #8b5cf6, transparent 70%);
  top: 60px; right: 30px;
  animation-delay: -3s;
}
.orb3 {
  width: 120px; height: 120px;
  background: radial-gradient(circle, #06b6d4, transparent 70%);
  bottom: 20px; left: 120px;
  animation-delay: -5s;
}
@keyframes orb-float {
  0%,100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}
.grid-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

/* ═══════════════════════════════════════
   趋势横幅
═══════════════════════════════════════ */
.trend-bar {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
  overflow: hidden;
}
.trend-bar .container { display: flex; align-items: center; gap: 16px; }
.trend-label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text2);
  white-space: nowrap;
  flex-shrink: 0;
  padding-right: 16px;
  border-right: 1px solid var(--border2);
}
.trend-scroll {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.trend-scroll::-webkit-scrollbar { display: none; }
.trend-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  font-size: 12.5px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--border2);
  color: var(--text2);
  background: var(--bg2);
  cursor: pointer;
  transition: all var(--transition);
}
.trend-tag:hover {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--accent);
}
.trend-tag .trend-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text3);
}

/* ═══════════════════════════════════════
   主内容
═══════════════════════════════════════ */
.main-content {
  padding: 32px 24px 80px;
}

/* 筛选栏 */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: sticky;
  top: calc(var(--navbar-h) + 8px);
  z-index: 100;
  backdrop-filter: blur(16px);
}
.filter-left, .filter-right { display: flex; align-items: center; gap: 12px; }
.tab-group {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text2);
  transition: all var(--transition);
  border: 1px solid transparent;
}
.tab:hover { color: var(--text); background: var(--surface2); }
.tab.active {
  color: var(--accent);
  background: var(--accent-glow);
  border-color: rgba(99,102,241,0.3);
}
.cat-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
.cat-dot.cat-skills { background: var(--cat-skills); }
.cat-dot.cat-mcp    { background: var(--cat-mcp); }
.cat-dot.cat-llm    { background: var(--cat-llm); }
.cat-dot.cat-token  { background: var(--cat-token); }
.cat-dot.cat-agent  { background: var(--cat-agent); }
.cat-dot.cat-cli    { background: var(--cat-cli); }

/* 排序 & 刷新 */
.sort-select-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg2);
  color: var(--text2);
}
.sort-select-wrap svg { width: 14px; height: 14px; flex-shrink: 0; }
.sort-select {
  background: none;
  border: none;
  color: var(--text2);
  font-size: 13.5px;
  font-weight: 500;
  outline: none;
  cursor: pointer;
}
.sort-select option { background: var(--surface); color: var(--text); }

/* 历史日期选择器（复用 sort-select-wrap 样式，加个历史色标） */
.date-picker-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg2);
  color: var(--text2);
}
.date-picker-wrap svg { width: 14px; height: 14px; flex-shrink: 0; color: var(--accent); }
.refresh-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text2);
  border: 1px solid var(--border);
  background: var(--bg2);
  transition: all var(--transition);
}
.refresh-btn svg { width: 15px; height: 15px; }
.refresh-btn:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-glow); }
.refresh-btn.spinning svg { animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* 标题行 */
.section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
}
.section-title svg { width: 18px; height: 18px; color: var(--accent); flex-shrink: 0; }
.news-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.news-header .section-title { margin-bottom: 0; }
.news-count {
  font-size: 13px;
  color: var(--text3);
  font-variant-numeric: tabular-nums;
}

/* ═══════════════════════════════════════
   精选卡片
═══════════════════════════════════════ */
.featured-section { margin-bottom: 48px; }
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 1100px) { .featured-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 700px)  { .featured-grid { grid-template-columns: 1fr; } }

.featured-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: pointer;
}
.featured-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border2);
}
.featured-card:first-child {
  grid-column: span 1;
}
.fc-cover {
  height: 180px;
  position: relative;
  overflow: hidden;
}
.fc-cover-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.featured-card:hover .fc-cover-bg { transform: scale(1.05); }
.fc-cover-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, rgba(0,0,0,0.75) 100%);
}
.fc-cat-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 3px 10px;
  border-radius: 20px;
  color: #fff;
  text-transform: uppercase;
}
.fc-body { padding: 18px; }
.fc-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.fc-desc {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.55;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.fc-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.fc-source {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text3);
}
.fc-source img {
  width: 16px;
  height: 16px;
  border-radius: 4px;
}
.fc-time {
  font-size: 11.5px;
  color: var(--text3);
  font-variant-numeric: tabular-nums;
}

/* ═══════════════════════════════════════
   资讯卡片网格
═══════════════════════════════════════ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 18px;
  margin-bottom: 40px;
}
@media (max-width: 700px) { .cards-grid { grid-template-columns: 1fr; } }

/* 卡片 */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: transparent;
  transition: background var(--transition);
  border-radius: var(--radius) var(--radius) 0 0;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--border2);
}
.card:hover::before { background: var(--cat-color, var(--accent)); }

/* 卡片头 */
.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.card-cat {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  flex-shrink: 0;
}
.cat-skills .card-cat, .card-cat.cat-skills { background: rgba(99,102,241,.15); color: var(--cat-skills); }
.cat-mcp .card-cat,    .card-cat.cat-mcp    { background: rgba(139,92,246,.15); color: var(--cat-mcp); }
.cat-llm .card-cat,    .card-cat.cat-llm    { background: rgba(6,182,212,.15);  color: var(--cat-llm); }
.cat-token .card-cat,  .card-cat.cat-token  { background: rgba(249,115,22,.15); color: var(--cat-token); }
.cat-agent .card-cat,  .card-cat.cat-agent  { background: rgba(34,197,94,.15);  color: var(--cat-agent); }
.cat-cli .card-cat,    .card-cat.cat-cli    { background: rgba(236,72,153,.15); color: var(--cat-cli); }

.card-hot {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--orange);
  background: rgba(249,115,22,.1);
  border-radius: 6px;
  padding: 3px 8px;
  flex-shrink: 0;
}
.card-hot svg { width: 12px; height: 12px; }

/* 卡片主体 */
.card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-desc {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

/* 标签组 */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tag {
  font-size: 11.5px;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: 6px;
  background: var(--bg2);
  color: var(--text2);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.tag:hover {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--border2);
}

/* 卡片底部 */
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.card-source {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--text3);
  font-weight: 500;
}
.card-source-icon {
  width: 18px;
  height: 18px;
  border-radius: 5px;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--surface2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}
.card-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}
.card-time {
  font-size: 11.5px;
  color: var(--text3);
  font-variant-numeric: tabular-nums;
}
.card-link-btn {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  display: grid;
  place-items: center;
  color: var(--text3);
  background: var(--bg2);
  border: 1px solid var(--border);
  transition: all var(--transition);
  flex-shrink: 0;
}
.card-link-btn:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-glow); }
.card-link-btn svg { width: 14px; height: 14px; }
.card-star-btn {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  display: grid;
  place-items: center;
  color: var(--text3);
  background: var(--bg2);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.card-star-btn:hover { color: var(--yellow); border-color: var(--yellow); background: rgba(234,179,8,.1); }
.card-star-btn.starred { color: var(--yellow); border-color: var(--yellow); background: rgba(234,179,8,.1); }
.card-star-btn svg { width: 14px; height: 14px; }

/* GitHub 统计行 */
.card-github-stats {
  display: flex;
  gap: 14px;
}
.gh-stat {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--text3);
  font-family: var(--font-mono);
}
.gh-stat svg { width: 13px; height: 13px; }

/* 骨架屏 */
.skeleton {
  pointer-events: none;
  min-height: 200px;
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}
@keyframes skeleton-pulse {
  0%,100% { opacity:.4; }
  50% { opacity:.7; }
}
.skeleton::after {
  content: '';
  display: block;
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--surface) 25%,
    var(--surface2) 50%,
    var(--surface) 75%
  );
  background-size: 400% 100%;
  animation: skeleton-slide 1.5s ease-in-out infinite;
}
@keyframes skeleton-slide {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

/* 加载更多 */
.load-more-wrap { text-align: center; padding: 20px 0; }
.load-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  color: var(--text2);
  border: 1px solid var(--border2);
  background: var(--surface);
  transition: all var(--transition);
}
.load-more-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-1px);
}
.load-more-btn svg { width: 16px; height: 16px; }
.load-more-btn.loading svg { animation: spin 1s linear infinite; }

/* ═══════════════════════════════════════
   浮动侧边栏
═══════════════════════════════════════ */
.sidebar-float {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 200;
  opacity: 0;
  transition: opacity var(--transition);
}
.sidebar-float.visible { opacity: 1; }
.sf-btn {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  font-size: 10.5px;
  font-weight: 700;
  color: var(--text3);
  background: var(--surface);
  border: 1px solid var(--border);
  transition: all var(--transition);
  display: grid;
  place-items: center;
}
.sf-btn:hover, .sf-btn.active {
  color: var(--accent);
  background: var(--accent-glow);
  border-color: var(--accent);
}
@media (max-width: 1200px) { .sidebar-float { display: none; } }

/* ═══════════════════════════════════════
   弹窗
═══════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  place-items: center;
  padding: 24px;
}
.modal-overlay.open { display: grid; }
.modal-box {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius-lg);
  max-width: 640px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: modal-in 0.25s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes modal-in {
  from { opacity:0; transform:scale(0.92) translateY(12px); }
  to   { opacity:1; transform:scale(1) translateY(0); }
}
.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 32px; height: 32px;
  border-radius: 8px;
  color: var(--text3);
  background: var(--bg2);
  display: grid;
  place-items: center;
  transition: all var(--transition);
  z-index: 1;
}
.modal-close:hover { color: var(--text); background: var(--surface2); }
.modal-close svg { width: 16px; height: 16px; }
.modal-content { padding: 28px; }

/* 弹窗内容样式 */
.modal-cat-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 4px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.modal-title {
  font-size: 22px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
  color: var(--text);
}
.modal-desc {
  font-size: 14.5px;
  color: var(--text2);
  line-height: 1.7;
  margin-bottom: 20px;
}
.modal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}
.modal-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--text3);
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 5px 10px;
}
.modal-meta-item svg { width: 13px; height: 13px; }
.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 24px;
}
.modal-actions {
  display: flex;
  gap: 12px;
}
.btn-primary {
  flex: 1;
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border: none;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
}
.btn-primary:hover {
  opacity: .9;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-secondary {
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  color: var(--text2);
  background: var(--surface2);
  border: 1px solid var(--border2);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 7px;
}
.btn-secondary:hover { color: var(--text); background: var(--bg3); }
.btn-primary svg, .btn-secondary svg { width: 15px; height: 15px; }

/* ═══════════════════════════════════════
   Toast 通知
═══════════════════════════════════════ */
.toast-container {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: var(--radius);
  font-size: 13.5px;
  font-weight: 500;
  color: #fff;
  box-shadow: var(--shadow-lg);
  animation: toast-in 0.3s cubic-bezier(0.34,1.56,0.64,1);
  pointer-events: auto;
  white-space: nowrap;
}
.toast.success { background: linear-gradient(135deg, #059669, #22c55e); }
.toast.info    { background: linear-gradient(135deg, var(--accent), var(--accent2)); }
.toast.error   { background: linear-gradient(135deg, #dc2626, var(--red)); }
.toast.fade-out { animation: toast-out 0.3s ease forwards; }
@keyframes toast-in  { from { opacity:0; transform:translateY(16px) scale(0.9); } to { opacity:1; transform:translateY(0) scale(1); } }
@keyframes toast-out { to   { opacity:0; transform:translateY(-8px) scale(0.95); } }

/* ═══════════════════════════════════════
   页脚
═══════════════════════════════════════ */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  background: var(--surface);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text2);
}
.footer-links, .footer-meta {
  font-size: 12.5px;
  color: var(--text3);
}

/* ═══════════════════════════════════════
   空状态
═══════════════════════════════════════ */
.empty-state {
  text-align: center;
  padding: 64px 24px;
  color: var(--text3);
  grid-column: 1 / -1;
}
.empty-state svg { width: 56px; height: 56px; margin: 0 auto 16px; opacity: .4; }
.empty-state h3 { font-size: 18px; font-weight: 600; color: var(--text2); margin-bottom: 8px; }
.empty-state p  { font-size: 14px; }

/* ═══════════════════════════════════════
   滚动条样式
═══════════════════════════════════════ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text3); }

/* ═══════════════════════════════════════
   响应式
═══════════════════════════════════════ */
@media (max-width: 900px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .nav-links { display: none; }
  .filter-bar { flex-direction: column; align-items: flex-start; }
  .tab-group { gap: 4px; }
  .tab { font-size: 12px; padding: 6px 12px; }
}
@media (max-width: 600px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 28px; }
  .hero-desc { font-size: 14px; }
  .search-input { width: 160px; }
  .footer-inner { flex-direction: column; text-align: center; }
}

/* ── 卡片 category color 变量映射 ── */
.card[data-cat="skills"] { --cat-color: var(--cat-skills); }
.card[data-cat="mcp"]    { --cat-color: var(--cat-mcp); }
.card[data-cat="llm"]    { --cat-color: var(--cat-llm); }
.card[data-cat="token"]  { --cat-color: var(--cat-token); }
.card[data-cat="agent"]  { --cat-color: var(--cat-agent); }
.card[data-cat="cli"]    { --cat-color: var(--cat-cli); }