/* ============ VibeStack — premium dark theme ============ */
:root{
  --bg:#07070c;
  --bg-2:#0b0b13;
  --surface:#101018;
  --surface-2:#15151f;
  --border:rgba(255,255,255,.08);
  --border-strong:rgba(255,255,255,.14);
  --text:#f4f4f8;
  --text-2:#a7a7ba;
  --text-3:#6f6f85;
  --accent:#818cf8;
  --accent-2:#c084fc;
  --grad:linear-gradient(120deg,#818cf8,#c084fc 55%,#f0abfc);
  --ease:cubic-bezier(.22,1,.36,1);
  --radius:18px;
  --header-h:64px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 76px)}
body{
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,"Helvetica Neue",Arial,sans-serif;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:#818cf8;color:#0b0b13}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:#26263a;border-radius:8px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:#3a3a58}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}

/* ---------- header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;height:var(--header-h);z-index:60;
  background:rgba(7,7,12,.35);
  -webkit-backdrop-filter:blur(14px) saturate(150%);backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid transparent;
  transition:background .4s var(--ease),border-color .4s var(--ease);
}
.site-header.scrolled{background:rgba(8,8,14,.86);border-bottom-color:var(--border)}
.header-inner{max-width:1200px;margin:0 auto;height:100%;padding:0 20px;display:flex;align-items:center;gap:20px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;letter-spacing:-.02em}
.logo-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:rgba(129,140,248,.12);border:1px solid rgba(129,140,248,.3)}
.logo-text em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.header-nav{display:flex;gap:22px;margin-left:12px}
.header-nav a{color:var(--text-2);font-size:.95rem;font-weight:500;transition:color .25s}
.header-nav a:hover{color:var(--text)}
.header-badge{margin-left:auto;font-size:.78rem;font-weight:700;letter-spacing:.04em;padding:6px 12px;border-radius:999px;color:#c7d2fe;background:rgba(129,140,248,.12);border:1px solid rgba(129,140,248,.35)}

/* ---------- hero ---------- */
.hero{position:relative;padding:calc(var(--header-h) + 72px) 20px 84px;overflow:hidden;text-align:center}
.aurora{position:absolute;inset:0;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;will-change:transform}
.blob-a{width:520px;height:520px;left:-140px;top:-180px;background:radial-gradient(circle at 30% 30%,#4f46e5,transparent 65%);animation:drift-a 26s ease-in-out infinite alternate}
.blob-b{width:460px;height:460px;right:-120px;top:-100px;background:radial-gradient(circle at 60% 40%,#9333ea,transparent 65%);animation:drift-b 32s ease-in-out infinite alternate}
.blob-c{width:380px;height:380px;left:42%;bottom:-260px;background:radial-gradient(circle at 50% 50%,#2563eb,transparent 65%);opacity:.35;animation:drift-a 38s ease-in-out infinite alternate-reverse}
@keyframes drift-a{from{transform:translate(0,0) scale(1)}to{transform:translate(70px,40px) scale(1.12)}}
@keyframes drift-b{from{transform:translate(0,0) scale(1.05)}to{transform:translate(-60px,55px) scale(.95)}}
.grain{position:absolute;inset:0;opacity:.05;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E")}
.hero-inner{position:relative;max-width:820px;margin:0 auto}
.hero-eyebrow{display:inline-block;font-size:.82rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#c7d2fe;padding:7px 14px;border:1px solid rgba(129,140,248,.35);border-radius:999px;background:rgba(129,140,248,.08);margin-bottom:26px}
.hero-title{font-size:clamp(2.35rem,6.2vw,4.1rem);line-height:1.06;font-weight:850;letter-spacing:-.03em}
.hero-title .w{display:inline-block;opacity:0;transform:translateY(26px);animation:word-up .9s var(--ease) forwards;animation-delay:calc(var(--i)*70ms)}
.hero-title .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
@keyframes word-up{to{opacity:1;transform:translateY(0)}}
.hero-sub{margin:22px auto 0;max-width:600px;color:var(--text-2);font-size:clamp(1rem,2.4vw,1.15rem)}
.reveal-up{opacity:0;transform:translateY(22px);animation:word-up 1s var(--ease) forwards}
.hero-sub.reveal-up{animation-delay:.45s}
.hero-search.reveal-up{animation-delay:.6s}
.hero-stats.reveal-up{animation-delay:.75s}

/* hero search */
.hero-search{
  margin:36px auto 0;max-width:620px;display:flex;align-items:center;gap:12px;
  background:rgba(16,16,26,.82);border:1px solid var(--border-strong);border-radius:16px;
  padding:6px 8px 6px 18px;text-align:left;
  transition:border-color .3s,box-shadow .3s;
}
.hero-search .search-icon{color:var(--text-3);flex:none}
.hero-search input{flex:1;min-width:0;background:none;border:none;outline:none;color:var(--text);font-size:1.02rem;padding:12px 0}
.hero-search input::placeholder{color:var(--text-3)}
.hero-search:focus-within{border-color:rgba(129,140,248,.65);box-shadow:0 0 0 4px rgba(129,140,248,.16),0 12px 44px -12px rgba(129,140,248,.45)}
.search-kbd{flex:none;font-family:inherit;font-size:.8rem;color:var(--text-2);background:var(--surface-2);border:1px solid var(--border-strong);border-bottom-width:2px;border-radius:7px;padding:3px 9px;margin-right:6px}

/* stats */
.hero-stats{margin-top:30px;display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap}
.stat{display:flex;align-items:baseline;gap:8px}
.stat-num{font-size:1.7rem;font-weight:850;letter-spacing:-.02em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums}
.stat-label{color:var(--text-2);font-size:.95rem}
.stat-dot{color:var(--text-3);font-size:1.2rem}

/* ---------- marquee ---------- */
.marquee{border-block:1px solid var(--border);background:var(--bg-2);overflow:hidden;padding:13px 0;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee-track{display:flex;gap:44px;width:max-content;animation:marquee 46s linear infinite;white-space:nowrap;color:var(--text-3);font-weight:600;font-size:.92rem;letter-spacing:.02em}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-track .mq-dot{color:var(--accent)}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- directory / toolbar ---------- */
.directory{max-width:1200px;margin:0 auto;padding:10px 20px 30px}
.toolbar{
  position:sticky;top:var(--header-h);z-index:50;
  padding:16px 0 12px;margin-bottom:8px;
  background:rgba(7,7,12,.82);
  -webkit-backdrop-filter:blur(14px) saturate(150%);backdrop-filter:blur(14px) saturate(150%);
}
.chips{display:flex;gap:9px;overflow-x:auto;padding:4px 2px 8px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.chips::-webkit-scrollbar{display:none}
.chip{
  flex:none;display:inline-flex;align-items:center;gap:7px;
  padding:9px 16px;border-radius:999px;font-size:.9rem;font-weight:600;color:var(--text-2);
  background:var(--surface);border:1px solid var(--border);
  transition:color .3s var(--ease),background .3s var(--ease),border-color .3s,transform .2s var(--ease),box-shadow .3s;
}
.chip:hover{color:var(--text);border-color:var(--border-strong);transform:translateY(-1px)}
.chip:active{transform:scale(.96)}
.chip .chip-ico{font-size:.95rem}
.chip.active{color:#fff;background:linear-gradient(120deg,#6366f1,#a855f7);border-color:transparent;box-shadow:0 8px 24px -8px rgba(139,92,246,.65)}
.result-count{color:var(--text-3);font-size:.9rem;margin-top:6px;font-variant-numeric:tabular-nums}

/* ---------- sections & cards ---------- */
.cat-section{padding:34px 0 6px;scroll-margin-top:calc(var(--header-h) + 84px)}
.cat-head{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.cat-ico{width:46px;height:46px;flex:none;display:grid;place-items:center;font-size:1.35rem;border-radius:13px;background:var(--surface-2);border:1px solid var(--border)}
.cat-head h2{font-size:1.45rem;font-weight:800;letter-spacing:-.02em}
.cat-head .cat-count{color:var(--text-3);font-size:.9rem;font-weight:600}
.cat-head .cat-line{flex:1;height:1px;background:linear-gradient(90deg,var(--border-strong),transparent)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(258px,1fr));gap:16px}

.card{
  position:relative;display:flex;flex-direction:column;gap:8px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:20px;overflow:hidden;isolation:isolate;
  transition:transform .45s var(--ease),border-color .45s,box-shadow .45s var(--ease);
}
.card::before{ /* gradient border sweep */
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;z-index:-1;
  background:linear-gradient(135deg,var(--cat,#818cf8),transparent 45%,transparent 60%,var(--cat,#818cf8));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;
  opacity:0;transition:opacity .45s;
}
.card::after{ /* soft glow */
  content:"";position:absolute;inset:-40% -20% auto;height:70%;z-index:-2;
  background:radial-gradient(closest-side,var(--cat,#818cf8),transparent);opacity:0;filter:blur(28px);transition:opacity .5s;
}
.card:hover{transform:translateY(-6px);border-color:transparent;box-shadow:0 22px 44px -18px rgba(0,0,0,.75)}
.card:hover::before{opacity:.9}
.card:hover::after{opacity:.16}
.card:active{transform:translateY(-2px) scale(.99)}
.card-top{display:flex;align-items:flex-start;gap:12px}
.tile{
  width:48px;height:48px;flex:none;display:grid;place-items:center;font-size:1.45rem;border-radius:13px;
  background:linear-gradient(145deg,color-mix(in srgb,var(--cat) 26%,transparent),color-mix(in srgb,var(--cat) 8%,transparent));
  border:1px solid color-mix(in srgb,var(--cat) 35%,transparent);
}
.card h3{font-size:1.06rem;font-weight:750;letter-spacing:-.01em;line-height:1.3;padding-top:3px}
.card p{color:var(--text-2);font-size:.93rem;flex:1}
.fav-btn{
  margin-left:auto;flex:none;width:34px;height:34px;display:grid;place-items:center;border-radius:9px;
  color:var(--text-3);font-size:1.05rem;transition:color .25s,background .25s,transform .2s var(--ease);
}
.fav-btn:hover{color:#fbbf24;background:rgba(251,191,36,.1)}
.fav-btn:active{transform:scale(1.25)}
.fav-btn.faved{color:#fbbf24}
.visit{
  margin-top:8px;display:inline-flex;align-items:center;gap:7px;align-self:flex-start;
  font-weight:700;font-size:.92rem;color:#c7d2fe;
  padding:9px 15px;border-radius:10px;background:rgba(129,140,248,.1);border:1px solid rgba(129,140,248,.28);
  transition:background .3s,color .3s,transform .25s var(--ease),box-shadow .3s;
}
.visit .arr{transition:transform .3s var(--ease)}
.visit:hover{background:linear-gradient(120deg,#6366f1,#a855f7);color:#fff;box-shadow:0 10px 26px -10px rgba(139,92,246,.7)}
.visit:hover .arr{transform:translateX(3px)}

/* reveal animations */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:calc(var(--d,0)*60ms)}
.reveal.in{opacity:1;transform:none}
.card.enter{animation:card-in .65s var(--ease) both;animation-delay:calc(var(--d,0)*45ms)}
@keyframes card-in{from{opacity:0;transform:translateY(22px) scale(.985)}to{opacity:1;transform:translateY(0) scale(1)}}

/* ---------- empty state ---------- */
.empty-state{text-align:center;padding:70px 20px 90px}
.empty-emoji{font-size:2.6rem;margin-bottom:14px}
.empty-state h2{font-size:1.4rem;font-weight:800;margin-bottom:8px}
.empty-state p{color:var(--text-2);margin-bottom:22px}
.btn-reset{padding:12px 22px;border-radius:12px;font-weight:700;color:#fff;background:linear-gradient(120deg,#6366f1,#a855f7);box-shadow:0 12px 28px -10px rgba(139,92,246,.6);transition:transform .25s var(--ease),box-shadow .3s}
.btn-reset:hover{transform:translateY(-2px)}
.btn-reset:active{transform:scale(.97)}

/* ---------- note + footer ---------- */
.categories-note{max-width:820px;margin:40px auto 0;padding:60px 20px 30px;text-align:center}
.categories-note h2{font-size:clamp(1.5rem,3.6vw,2rem);font-weight:820;letter-spacing:-.02em;margin-bottom:14px}
.categories-note p{color:var(--text-2);font-size:1.02rem}
.site-footer{border-top:1px solid var(--border);margin-top:60px;padding:36px 20px 44px;text-align:center}
.footer-brand{color:var(--text-2);font-size:.95rem}
.footer-brand strong{color:var(--text)}
.footer-credit{color:var(--text-3);font-size:.83rem;margin-top:8px}

/* ---------- back to top ---------- */
.back-to-top{
  position:fixed;right:20px;bottom:22px;z-index:55;width:46px;height:46px;border-radius:13px;
  display:grid;place-items:center;color:#fff;
  background:linear-gradient(135deg,#6366f1,#a855f7);box-shadow:0 14px 30px -10px rgba(139,92,246,.65);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .4s var(--ease),transform .4s var(--ease);
}
.back-to-top.show{opacity:1;transform:none;pointer-events:auto}
.back-to-top:hover{transform:translateY(-3px)}
.back-to-top:active{transform:scale(.94)}

/* ---------- responsive ---------- */
@media (max-width:640px){
  .header-nav{display:none}
  .hero{padding:calc(var(--header-h) + 52px) 16px 64px}
  .directory{padding:6px 16px 24px}
  .grid{grid-template-columns:1fr}
  .search-kbd{display:none}
  .hero-stats{gap:10px}
  .stat-num{font-size:1.45rem}
  .blob{filter:blur(64px)}
  .back-to-top{right:16px;bottom:18px}
}
@media (min-width:1100px){
  .grid{grid-template-columns:repeat(4,1fr)}
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001s !important;animation-iteration-count:1 !important;transition-duration:.001s !important}
  .reveal,.reveal-up,.hero-title .w{opacity:1;transform:none}
  .marquee-track{animation:none}
}