/* ============ Reset & Base ============ */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:linear-gradient(135deg,#f0f4ff,#e8f0fe,#f0f4ff);min-height:100vh;color:#1e293b;-webkit-font-smoothing:antialiased}
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:#f1f5f9}
::-webkit-scrollbar-thumb{background:linear-gradient(135deg,#8b5cf6,#06b6d4);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:linear-gradient(135deg,#7c3aed,#0891b2)}

/* ============ Background Animation ============ */
.bg-animation{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;overflow:hidden;z-index:0}
.bg-animation:before{content:"";position:absolute;top:-30%;left:-30%;width:160%;height:160%;background:radial-gradient(circle at 15% 75%,rgba(139,92,246,.08) 0%,transparent 50%),radial-gradient(circle at 85% 25%,rgba(6,182,212,.07) 0%,transparent 50%),radial-gradient(circle at 60% 80%,rgba(168,85,247,.05) 0%,transparent 40%);animation:bgMove 30s ease-in-out infinite}
@keyframes bgMove{0%,to{transform:translate(0) rotate(0)}33%{transform:translate(-2%,-2%) rotate(1deg)}66%{transform:translate(2%,-1%) rotate(-1deg)}}
@media(prefers-reduced-motion:reduce){.bg-animation:before{animation:none}}

/* ============ Header ============ */
.header-glass{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(139,92,246,.12)}
.header-inner{max-width:80rem;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:.5rem 1.5rem;gap:1rem}
.logo{display:flex;align-items:center;gap:.5rem;cursor:pointer;flex-shrink:0;margin-left:-1rem}
.logo-icon{font-size:1.75rem}
.logo-img{height:5rem;width:auto;border-radius:.5rem;object-fit:contain}
.logo-text{font-size:1.25rem;font-weight:700;background:linear-gradient(135deg,#7c3aed,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.logo-dot{opacity:.6}

/* ============ Search ============ */
.search-box{position:relative;flex:1;max-width:36rem}
.search-icon{position:absolute;left:.75rem;top:50%;transform:translateY(-50%);width:1.25rem;height:1.25rem;color:#94a3b8;pointer-events:none}
.search-input{width:100%;padding:.625rem 1rem .625rem 2.75rem;border-radius:9999px;border:1.5px solid rgba(139,92,246,.2);background:rgba(255,255,255,.95);color:#1e293b;font-size:.875rem;outline:none;transition:all .2s}
.search-input:focus{border-color:#7c3aed;box-shadow:0 0 0 3px rgba(124,58,237,.12)}
.search-input::placeholder{color:#94a3b8}
.search-dropdown{position:absolute;top:calc(100% + .5rem);left:0;right:0;background:rgba(255,255,255,.98);backdrop-filter:blur(20px);border:1px solid rgba(139,92,246,.15);border-radius:1rem;box-shadow:0 8px 32px rgba(139,92,246,.12);max-height:18rem;overflow-y:auto;padding:.5rem}
.search-dropdown.hidden{display:none}
.search-item{display:flex;align-items:center;gap:.75rem;padding:.5rem .75rem;border-radius:.5rem;cursor:pointer;transition:background .15s}
.search-item:hover{background:rgba(139,92,246,.06)}
.search-item-icon{width:2rem;height:2rem;border-radius:.5rem;display:flex;align-items:center;justify-content:center;font-size:1rem;flex-shrink:0}
.search-item-info{min-width:0;flex:1}
.search-item-name{font-size:.875rem;font-weight:500;color:#1e293b}
.search-item-desc{font-size:.75rem;color:#64748b;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.highlight-text{background:rgba(124,58,237,.15);color:#6d28d9;border-radius:4px;padding:0 2px}

/* ============ GitHub Link ============ */
.github-link{color:#64748b;transition:color .2s;flex-shrink:0;display:flex}
.github-link:hover{color:#7c3aed}

/* ============ Layout ============ */
.main-content{position:relative;z-index:10;display:flex;max-width:80rem;margin:0 auto;padding:8.5rem 1.5rem 6rem;gap:1.5rem}
.category-bar{position:fixed;top:3.5rem;left:0;bottom:0;width:14rem;padding:6rem .75rem;overflow-y:auto;z-index:10;display:none}
@media(min-width:768px){.category-bar{display:block}.main-content{padding-left:16.5rem}}

/* ============ Category Items ============ */
.cat-item{display:flex;align-items:center;gap:.5rem;padding:.625rem .75rem;border-radius:.75rem;cursor:pointer;font-size:.875rem;font-weight:500;color:#475569;transition:all .2s;margin-bottom:.25rem;border:1px solid transparent}
.cat-item:hover{background:rgba(139,92,246,.06);color:#7c3aed}
.cat-item.active{background:linear-gradient(135deg,#7c3aed,#06b6d4);color:#fff;box-shadow:0 4px 16px rgba(124,58,237,.3);border-color:transparent}
.cat-item .cat-icon{font-size:1.125rem}
.cat-item .cat-count{margin-left:auto;font-size:.75rem;opacity:.7}

/* ============ Tool Grid ============ */
.content-area{flex:1;min-width:0}
.tool-grid{display:grid;grid-template-columns:1fr;gap:1rem}
@media(min-width:640px){.tool-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.tool-grid{grid-template-columns:repeat(3,1fr)}}

/* ============ Tool Card ============ */
.tool-card{background:#fff;border-radius:16px;border:1px solid rgba(139,92,246,.1);padding:1.25rem;transition:all .25s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.04);text-decoration:none;color:inherit;display:block}
.tool-card::before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit;padding:1px;background:linear-gradient(135deg,rgba(139,92,246,.4),rgba(6,182,212,.2));-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .25s;pointer-events:none}
.tool-card:hover::before{opacity:1}
.tool-card:hover{transform:translateY(-3px) scale(1.01);box-shadow:0 12px 32px rgba(139,92,246,.15),0 4px 12px rgba(0,0,0,.08);border-color:rgba(139,92,246,.25)}
.tool-card-header{display:flex;align-items:center;gap:.75rem;margin-bottom:.75rem}
.tool-icon{width:2.75rem;height:2.75rem;border-radius:.75rem;display:flex;align-items:center;justify-content:center;font-size:1.5rem;flex-shrink:0}
.tool-info{min-width:0;flex:1}
.tool-name{font-size:1rem;font-weight:600;color:#1e293b;display:flex;align-items:center;gap:.375rem}
.tool-hot{background:linear-gradient(135deg,#f97316,#ef4444);color:#fff;font-size:.625rem;padding:2px 6px;border-radius:9999px;font-weight:600;letter-spacing:.02em;flex-shrink:0}
.tool-desc{font-size:.8125rem;color:#64748b;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:.75rem}
.tool-tags{display:flex;flex-wrap:wrap;gap:.25rem}
.tool-tag{font-size:.6875rem;padding:2px 8px;border-radius:9999px;font-weight:500}
.tag-免费{background:rgba(168,85,247,.1);color:#7c3aed}
.tag-国产{background:rgba(34,197,94,.1);color:#16a34a}
.tag-国际{background:rgba(59,130,246,.1);color:#2563eb}
.tag-付费{background:rgba(245,158,11,.1);color:#d97706}
.tag-开源{background:rgba(6,182,212,.1);color:#0891b2}
.tag-default{background:#f1f5f9;color:#64748b}

/* ============ Category Color Bars ============ */
.color-blue{background:linear-gradient(135deg,#3b82f6,#06b6d4)}
.color-pink{background:linear-gradient(135deg,#ec4899,#d946ef)}
.color-orange{background:linear-gradient(135deg,#fb923c,#f97316)}
.color-green{background:linear-gradient(135deg,#22c55e,#10b981)}
.color-purple{background:linear-gradient(135deg,#a855f7,#ec4899)}
.color-yellow{background:linear-gradient(135deg,#eab308,#f97316)}
.color-indigo{background:linear-gradient(135deg,#6366f1,#8b5cf6)}
.color-red{background:linear-gradient(135deg,#ef4444,#f87171)}

/* ============ No Results ============ */
.no-results{text-align:center;padding:4rem 1rem;color:#94a3b8}
.no-results-icon{font-size:3rem;margin-bottom:1rem}
.no-results.hidden{display:none}

/* ============ Bottom Nav (mobile) ============ */
.bottom-nav{position:fixed;bottom:0;left:0;right:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:1px solid rgba(139,92,246,.1);display:flex;justify-content:space-around;padding:.5rem 0 calc(.5rem + env(safe-area-inset-bottom,0px))}
@media(min-width:768px){.bottom-nav{display:none}}
.bnav-item{display:flex;flex-direction:column;align-items:center;gap:2px;cursor:pointer;padding:.25rem .5rem;border-radius:.5rem;transition:all .2s;color:#64748b;font-size:.6875rem}
.bnav-item:hover,.bnav-item.active{color:#7c3aed}
.bnav-icon{font-size:1.25rem}
.bnav-item.active .bnav-icon{transform:scale(1.1)}

.fav-btn{display:flex;align-items:center;gap:.35rem;padding:.4rem .85rem;border-radius:9999px;border:1.5px solid rgba(139,92,246,.25);background:rgba(255,255,255,.9);color:#7c3aed;font-size:.8125rem;font-weight:500;cursor:pointer;transition:all .2s;flex-shrink:0}
.fav-btn:hover{background:#7c3aed;color:#fff;border-color:#7c3aed}
.fav-btn svg{flex-shrink:0}

/* ============ Footer ============ */
.footer{text-align:center;padding:1.5rem 1rem 6rem;color:#94a3b8;font-size:.8125rem;position:relative;z-index:10}
@media(min-width:768px){.footer{padding-bottom:2rem}}
.footer-sub{margin-top:.25rem;font-size:.75rem;opacity:.7}

/* ============ Hidden utility ============ */
.hidden{display:none!important}

/* ============ Search Hint ============ */
.search-hint{position:absolute;right:.75rem;top:50%;transform:translateY(-50%);background:rgba(139,92,246,.1);color:#7c3aed;font-size:.65rem;font-weight:600;padding:.15rem .45rem;border-radius:4px;pointer-events:none;border:1px solid rgba(139,92,246,.15)}
.search-input:focus ~ .search-hint{display:none}

/* ============ Footer (Full) ============ */
.footer{text-align:left;padding:3rem 1rem 6rem;color:#94a3b8;font-size:.8125rem;position:relative;z-index:10;background:rgba(255,255,255,.5);border-top:1px solid rgba(139,92,246,.1)}
@media(min-width:768px){.footer{padding-bottom:2rem}}
.footer-inner{max-width:80rem;margin:0 auto;display:flex;flex-direction:column;gap:1.5rem}
@media(min-width:768px){.footer-inner{flex-direction:row;flex-wrap:wrap;justify-content:space-between;align-items:flex-start}}
.footer-links{display:flex;gap:1.5rem;flex-wrap:wrap;justify-content:center;margin-top:.5rem}
.footer-col{display:flex;flex-direction:column;gap:.4rem;min-width:7rem}
.footer-col h4{font-size:.7rem;font-weight:700;color:#7c3aed;text-transform:uppercase;letter-spacing:.06em;margin-bottom:.3rem}
.footer-col a{color:#64748b;text-decoration:none;font-size:.8125rem;transition:color .2s}
.footer-links{display:flex;gap:1.5rem;flex-wrap:wrap;justify-content:center;margin-top:.5rem}
.footer-links a{color:#64748b;text-decoration:none;font-size:.8125rem;transition:color .2s}
.footer-links a:hover{color:#7c3aed}
.footer-col a:hover{color:#7c3aed}
.footer-bottom{width:100%;text-align:center;padding-top:1.5rem;border-top:1px solid rgba(139,92,246,.08);display:flex;flex-direction:column;gap:.2rem}
.footer-bottom p{font-size:.75rem;color:#94a3b8}
.footer-icp{font-size:.72rem;color:#94a3b8;text-align:center;margin-top:.5rem}
.footer-icp a{color:#94a3b8;text-decoration:none}
.footer-icp a:hover{color:#7c3aed}

/* ============ 今日推荐横幅 ============ */
.today-pick{background:linear-gradient(135deg,rgba(139,92,246,.08),rgba(6,182,212,.06));border:1px solid rgba(139,92,246,.15);border-radius:12px;padding:.75rem 1rem;margin-bottom:1rem;backdrop-filter:blur(10px)}
.today-pick-inner{display:flex;align-items:center;flex-wrap:wrap;gap:.4rem}
.today-pick-tag{font-size:.75rem;font-weight:700;color:#7c3aed;margin-right:.25rem;flex-shrink:0}
.today-pick-item{font-size:.78rem;color:#475569;text-decoration:none;padding:.2rem .6rem;background:rgba(255,255,255,.7);border-radius:9999px;border:1px solid rgba(139,92,246,.15);transition:all .2s}
.today-pick-item:hover{background:#7c3aed;color:#fff;border-color:#7c3aed}
body.dark .today-pick{background:linear-gradient(135deg,rgba(139,92,246,.12),rgba(6,182,212,.1));border-color:rgba(139,92,246,.25)}
body.dark .today-pick-item{background:rgba(30,30,55,.8);color:#94a3b8;border-color:rgba(139,92,246,.2)}
body.dark .today-pick-item:hover{background:#7c3aed;color:#fff}


#themeToggle{background:none;border:none;cursor:pointer;padding:.4rem;color:#7c3aed;display:flex;align-items:center;border-radius:.5rem;transition:background .2s;flex-shrink:0}
#themeToggle:hover{background:rgba(124,58,237,.1)}

/* ============ Dark Mode ============ */
:root{
  --bg-primary:linear-gradient(135deg,#f0f4ff,#e8f0fe,#f0f4ff);
  --bg-card:#fff;
  --bg-header:rgba(255,255,255,.85);
  --bg-footer:rgba(255,255,255,.5);
  --text-primary:#1e293b;
  --text-secondary:#64748b;
  --text-muted:#94a3b8;
  --border-color:rgba(139,92,246,.12);
  --border-card:rgba(139,92,246,.1);
  --shadow-card:0 2px 8px rgba(0,0,0,.04);
  --shadow-hover:0 12px 32px rgba(139,92,246,.15),0 4px 12px rgba(0,0,0,.08);
  --search-bg:rgba(255,255,255,.95);
  --tag-bg:#f1f5f9;
  --tag-color:#64748b;
  --scrollbar-track:#1e293b;
  --scrollbar-thumb:linear-gradient(135deg,#8b5cf6,#06b6d4);
  --cat-bar-bg:transparent;
  --cat-bar-border:none;
}
body.dark{
  --bg-primary:linear-gradient(135deg,#0f0f1a,#111827,#0f1123);
  --bg-card:#1a1a2e;
  --bg-header:rgba(26,26,46,.9);
  --bg-footer:rgba(26,26,46,.8);
  --text-primary:#e2e8f0;
  --text-secondary:#94a3b8;
  --text-muted:#64748b;
  --border-color:rgba(139,92,246,.2);
  --border-card:rgba(139,92,246,.18);
  --shadow-card:0 2px 8px rgba(0,0,0,.3);
  --shadow-hover:0 12px 32px rgba(139,92,246,.25),0 4px 12px rgba(0,0,0,.4);
  --search-bg:rgba(30,30,55,.95);
  --tag-bg:#1e293b;
  --tag-color:#94a3b8;
  --scrollbar-track:#0f0f1a;
  --cat-bar-bg:transparent;
}
body.dark{background:var(--bg-primary);color:var(--text-primary)}
body.dark body{background:var(--bg-primary)}
body.dark ::-webkit-scrollbar-track{background:var(--scrollbar-track)}
body.dark ::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:3px}
body.dark .bg-animation:before{opacity:.4}
body.dark .header-glass{background:var(--bg-header);border-bottom-color:var(--border-color)}
body.dark .logo-text{-webkit-text-fill-color:#e2e8f0;background:none}
body.dark .logo-dot{color:#94a3b8}
body.dark .search-input{background:var(--search-bg);color:var(--text-primary);border-color:var(--border-color)}
body.dark .search-input::placeholder{color:var(--text-muted)}
body.dark .search-input:focus{border-color:#7c3aed;box-shadow:0 0 0 3px rgba(124,58,237,.2)}
body.dark .search-dropdown{background:var(--bg-card);border-color:var(--border-color);box-shadow:0 8px 32px rgba(0,0,0,.4)}
body.dark .search-item:hover{background:rgba(124,58,237,.12)}
body.dark .search-item-name{color:var(--text-primary)}
body.dark .search-item-desc{color:var(--text-secondary)}
body.dark .github-link{color:var(--text-secondary)}
body.dark .github-link:hover{color:#a855f7}
body.dark .tool-card{background:var(--bg-card);border-color:var(--border-card);box-shadow:var(--shadow-card);color:var(--text-primary)}
body.dark .tool-card:hover{box-shadow:var(--shadow-hover);border-color:rgba(139,92,246,.35)}
body.dark .tool-name{color:var(--text-primary)}
body.dark .tool-desc{color:var(--text-secondary)}
body.dark .cat-item{color:var(--text-secondary)}
body.dark .cat-item:hover{background:rgba(124,58,237,.12);color:#a855f7}
body.dark .cat-item.active{color:#fff}
body.dark .bottom-nav{background:var(--bg-header);border-top-color:var(--border-color)}
body.dark .bnav-item{color:var(--text-secondary)}
body.dark .bnav-item:hover,.bnav-item.active{color:#a855f7}
body.dark .footer{background:var(--bg-footer);color:var(--text-secondary);border-top-color:var(--border-color)}
body.dark .footer-col h4{color:#a855f7}
body.dark .footer-col a{color:var(--text-secondary)}
body.dark .footer-col a:hover{color:#a855f7}
body.dark .footer-bottom{border-top-color:var(--border-color)}
body.dark .footer-bottom p{color:var(--text-muted)}
body.dark .news-panel{background:rgba(26,26,46,.9);border-color:var(--border-color)}
body.dark .news-panel-hd{border-bottom-color:var(--border-color)}
body.dark .news-panel-hd h3{color:#a855f7}
body.dark .news-panel-hd a{color:var(--text-secondary)}
body.dark .news-panel-hd a:hover{color:#a855f7}
body.dark .news-list li{border-bottom-color:var(--border-color)}
body.dark .news-list a{color:var(--text-secondary)}
body.dark .news-list a:hover{background:rgba(124,58,237,.12);color:#a855f7}
body.dark .fav-btn{background:rgba(26,26,46,.9);border-color:rgba(139,92,246,.3);color:#a855f7}
body.dark .fav-btn:hover{background:#7c3aed;color:#fff}
body.dark .tag-default{background:#1e293b;color:#94a3b8}
body.dark .no-results{color:var(--text-muted)}
body.dark #themeToggle{color:#a855f7}
body.dark #themeToggle:hover{background:rgba(124,58,237,.15)}