@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800;900&family=Bricolage+Grotesque:opsz,wght@12..96,400;600;700;800&display=swap');
:root{
  --ink:#0d0f14;--ink2:#1a1d26;--ink3:#252836;--ink4:#323548;
  --ghost:rgba(255,255,255,.04);--ghost2:rgba(255,255,255,.07);--ghost3:rgba(255,255,255,.11);
  --wire:rgba(255,255,255,.06);--wire2:rgba(255,255,255,.1);
  --snow:#f0f2ff;--mist:#94a3b8;--fog:#475569;
  --spark:#7c6df4;--spark2:#6355e0;
  --glow:rgba(124,109,244,.18);
  --em:#f0f2ff;
  --font:'Plus Jakarta Sans',system-ui,sans-serif;
  --display:'Bricolage Grotesque',system-ui,sans-serif;
  --r:10px;--r2:16px;--r3:22px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--ink)}
.ch-hub{background:var(--ink);min-height:100vh;font-family:var(--font);color:var(--snow)}

/* ── HERO ──────────────────────────────────────────────── */
.ch-hub-hero{
  background:linear-gradient(160deg,#10111a 0%,#0d0f14 100%);
  border-bottom:1px solid var(--wire);
  padding:56px 24px 0;
  position:relative;overflow:hidden
}
.ch-hub-hero::before{
  content:'';position:absolute;top:-120px;left:50%;transform:translateX(-50%);
  width:700px;height:700px;
  background:radial-gradient(ellipse at center,rgba(124,109,244,.13) 0%,transparent 65%);
  pointer-events:none
}
.ch-hub-hero-inner{max-width:1120px;margin:0 auto;position:relative;z-index:1}
.ch-hub-eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 14px 5px 7px;border-radius:999px;
  background:rgba(124,109,244,.12);border:1px solid rgba(124,109,244,.25);
  font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#a5b4fc;
  margin-bottom:20px
}
.ch-hub-eyebrow-dot{width:6px;height:6px;border-radius:50%;background:#7c6df4;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.8)}}
.ch-hub-hero-title{
  font-family:var(--display);font-size:clamp(2.2rem,6vw,4rem);
  font-weight:800;line-height:.95;letter-spacing:-.05em;
  color:#fff;margin-bottom:16px;max-width:680px
}
.ch-hub-hero-title span{
  background:linear-gradient(135deg,#7c6df4,#a78bfa);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text
}
.ch-hub-hero-sub{font-size:.97rem;color:var(--mist);line-height:1.7;max-width:520px;margin-bottom:28px}
.ch-hub-hero-cta{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:40px}

/* ── Stats ticker ── */
.ch-hub-stats{
  display:flex;gap:0;border-top:1px solid var(--wire);
  margin-top:0
}
.ch-hub-stat{padding:14px 32px 14px 0;position:relative}
.ch-hub-stat strong{display:block;font-family:var(--display);font-size:1.6rem;font-weight:800;letter-spacing:-.04em;color:#fff}
.ch-hub-stat small{font-size:.7rem;color:var(--fog);text-transform:uppercase;letter-spacing:.08em;font-weight:600}

/* ── NAV ────────────────────────────────────────────────── */
.ch-hub-nav{
  background:rgba(13,15,20,.92);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--wire);
  position:sticky;top:0;z-index:100
}
.ch-hub-nav-inner{
  max-width:1120px;margin:0 auto;padding:0 24px;
  display:flex;align-items:center;gap:4px;
  overflow-x:auto;scrollbar-width:none
}
.ch-hub-nav-inner::-webkit-scrollbar{display:none}
.ch-hub-nav-tab{
  padding:14px 16px;font-size:.84rem;font-weight:600;color:var(--fog);
  text-decoration:none;border-bottom:2px solid transparent;
  white-space:nowrap;transition:color .15s;cursor:pointer;background:none;border-top:none;border-left:none;border-right:none;font-family:var(--font)
}
.ch-hub-nav-tab:hover{color:var(--snow)}
.ch-hub-nav-tab.is-active{color:#fff;border-bottom-color:var(--spark)}
.ch-hub-nav-search{
  margin-left:auto;display:flex;align-items:center;gap:8px;
  padding:6px 12px;background:var(--ghost2);border:1px solid var(--wire2);
  border-radius:8px;flex-shrink:0
}
.ch-hub-nav-search svg{color:var(--fog);flex-shrink:0}
.ch-hub-nav-search input{background:none;border:none;outline:none;font-size:.82rem;color:var(--snow);font-family:var(--font);width:160px}
.ch-hub-nav-search input::placeholder{color:var(--fog)}

/* ── BODY ────────────────────────────────────────────────── */
.ch-hub-body{max-width:1120px;margin:0 auto;padding:28px 24px 80px;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}

/* ── SECTION HEADER ── */
.ch-section-hd{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.ch-section-label{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--fog)}

/* ── COMMUNITY CARDS ─────────────────────────────────────── */
.ch-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;margin-bottom:32px}
.ch-card{
  background:var(--ink2);border:1px solid var(--wire);border-radius:var(--r3);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .2s,transform .2s,box-shadow .2s;
  text-decoration:none;color:inherit
}
.ch-card:hover{border-color:rgba(124,109,244,.3);transform:translateY(-3px);box-shadow:0 16px 40px rgba(0,0,0,.4)}
.ch-card-cover{
  height:72px;background:var(--ink3) center/cover no-repeat;
  position:relative;flex-shrink:0
}
.ch-card-cover-gradient{height:72px;flex-shrink:0;position:relative}
.ch-card-body{padding:0 16px 16px;flex:1;display:flex;flex-direction:column}
.ch-card-avatar-row{margin-top:-22px;margin-bottom:10px;display:flex;align-items:flex-end;justify-content:space-between}
.ch-card-avatar{
  width:44px;height:44px;border-radius:12px;
  border:3px solid var(--ink2);background:var(--ink3);
  object-fit:cover;flex-shrink:0;display:flex;align-items:center;justify-content:center;
  font-family:var(--display);font-weight:800;font-size:.9rem;color:#fff
}
.ch-card-join-sm{
  padding:5px 14px;border-radius:999px;font-size:.72rem;font-weight:700;
  border:1.5px solid var(--wire2);background:transparent;color:var(--snow);
  cursor:pointer;font-family:var(--font);transition:all .15s
}
.ch-card-join-sm:hover,.ch-card-join-sm[data-joined="1"]{background:var(--spark);border-color:var(--spark);color:#fff}
.ch-card-name{font-size:.92rem;font-weight:700;color:#fff;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ch-card-desc{font-size:.78rem;color:var(--mist);line-height:1.55;flex:1;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ch-card-footer{display:flex;gap:12px;font-size:.72rem;color:var(--fog)}
.ch-card-footer span{display:flex;align-items:center;gap:4px}

/* ── ACTIVITY FEED ───────────────────────────────────────── */
.ch-feed{display:flex;flex-direction:column;gap:2px;border:1px solid var(--wire);border-radius:var(--r3);overflow:hidden;background:var(--wire)}
.ch-feed-item{
  background:var(--ink2);padding:14px 18px;
  display:flex;gap:12px;transition:background .12s;cursor:pointer
}
.ch-feed-item:hover{background:var(--ink3)}
.ch-feed-vote{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  flex-shrink:0;padding-top:2px
}
.ch-feed-vote-up{
  background:none;border:none;cursor:pointer;padding:4px 6px;
  border-radius:6px;color:var(--fog);font-size:.85rem;line-height:1;
  transition:all .12s;font-family:var(--font)
}
.ch-feed-vote-up:hover{background:rgba(124,109,244,.15);color:var(--spark)}
.ch-feed-vote-count{font-family:var(--display);font-size:.72rem;font-weight:700;color:var(--mist)}
.ch-feed-content{flex:1;min-width:0}
.ch-feed-source{
  font-size:.72rem;color:var(--fog);margin-bottom:5px;
  display:flex;align-items:center;gap:6px;flex-wrap:wrap
}
.ch-feed-source a{color:var(--spark);font-weight:700;text-decoration:none}
.ch-feed-source a:hover{text-decoration:underline}
.ch-feed-title{
  font-size:.9rem;font-weight:700;color:#fff;line-height:1.4;margin-bottom:5px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.ch-feed-title a{color:inherit;text-decoration:none}
.ch-feed-title a:hover{color:#a5b4fc}
.ch-feed-preview{font-size:.78rem;color:var(--mist);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ch-feed-actions{display:flex;gap:2px;margin-top:8px;flex-wrap:wrap}
.ch-feed-action{
  background:none;border:none;cursor:pointer;font-size:.72rem;
  color:var(--fog);font-weight:600;padding:4px 8px;border-radius:6px;
  transition:background .12s;display:flex;align-items:center;gap:4px;
  font-family:var(--font);text-decoration:none
}
.ch-feed-action:hover{background:var(--ghost2);color:var(--mist)}

/* ── EMPTY ── */
.ch-empty{padding:60px 20px;text-align:center;color:var(--fog)}
.ch-empty-icon{font-size:2.8rem;margin-bottom:12px;filter:grayscale(1);opacity:.4}

/* ── SIDEBAR ─────────────────────────────────────────────── */
.ch-sidebar-card{background:var(--ink2);border:1px solid var(--wire);border-radius:var(--r3);overflow:hidden;margin-bottom:16px}
.ch-sidebar-head{padding:13px 18px;border-bottom:1px solid var(--wire);font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--fog);display:flex;align-items:center;justify-content:space-between}
.ch-sidebar-body{padding:16px 18px}

/* ── CREATE FORM ── */
.ch-create-field{margin-bottom:12px}
.ch-create-field label{display:block;font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--fog);margin-bottom:6px}
.ch-create-field input,.ch-create-field textarea{
  width:100%;padding:9px 12px;background:var(--ink);border:1px solid var(--wire2);
  border-radius:8px;color:var(--snow);font-size:.84rem;font-family:var(--font);
  outline:none;transition:border-color .15s
}
.ch-create-field input:focus,.ch-create-field textarea:focus{border-color:var(--spark);box-shadow:0 0 0 3px var(--glow)}
.ch-create-field input::placeholder,.ch-create-field textarea::placeholder{color:var(--fog)}
.ch-create-field textarea{min-height:72px;resize:vertical}
.ch-upload-zone{
  border:1.5px dashed rgba(255,255,255,.12);border-radius:9px;background:var(--ink);
  cursor:pointer;min-height:58px;display:flex;align-items:center;justify-content:center;
  transition:all .15s;overflow:hidden;position:relative
}
.ch-upload-zone:hover,.ch-upload-zone.is-dragover{border-color:var(--spark);background:rgba(124,109,244,.07)}
.ch-upload-zone__inner{display:flex;flex-direction:column;align-items:center;gap:3px;padding:10px;text-align:center;pointer-events:none;width:100%}
.ch-upload-zone__label{font-size:.72rem;font-weight:600;color:var(--fog)}
.ch-upload-zone__hint{font-size:.62rem;color:var(--fog);opacity:.7}
.ch-upload-zone__preview{width:100%;height:100%;position:relative;min-height:58px}
.ch-upload-zone__preview img{width:100%;height:100%;object-fit:cover;display:block;min-height:58px}
.ch-upload-remove{position:absolute;top:4px;right:4px;width:20px;height:20px;border-radius:50%;background:rgba(0,0,0,.7);color:#fff;border:none;cursor:pointer;font-size:.65rem;display:flex;align-items:center;justify-content:center;z-index:2}
.ch-upload-zone.is-uploading{opacity:.6;pointer-events:none}
.ch-create-msg{font-size:.78rem;margin-top:8px;display:block;min-height:16px}

/* ── BUTTONS ── */
.ch-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:9px 20px;border-radius:999px;font-size:.84rem;font-weight:700;
  text-decoration:none;border:none;cursor:pointer;font-family:var(--font);
  transition:all .15s;white-space:nowrap;min-height:38px
}
.ch-btn--primary{background:var(--spark);color:#fff}
.ch-btn--primary:hover{background:var(--spark2);transform:translateY(-1px);box-shadow:0 8px 24px rgba(124,109,244,.3)}
.ch-btn--outline{background:transparent;color:var(--snow);border:1.5px solid var(--wire2)}
.ch-btn--outline:hover{background:var(--ghost2)}
.ch-btn--ghost{background:var(--ghost2);color:var(--mist);border:1px solid var(--wire)}
.ch-btn--ghost:hover{background:var(--ghost3);color:var(--snow)}
.ch-btn--sm{padding:6px 14px;font-size:.76rem;min-height:32px}
.ch-btn--full{width:100%;justify-content:center}
.ch-btn--joined{background:transparent;color:var(--spark);border:1.5px solid rgba(124,109,244,.4)}
.ch-btn--joined:hover{background:rgba(124,109,244,.08)}

/* ── TOP COMMUNITIES MINI LIST ── */
.ch-mini-community{display:flex;align-items:center;gap:10px;padding:8px 0;text-decoration:none;color:inherit;border-bottom:1px solid var(--wire)}
.ch-mini-community:last-child{border-bottom:none;padding-bottom:0}
.ch-mini-community:first-child{padding-top:0}
.ch-mini-community:hover .ch-mini-name{color:var(--spark)}
.ch-mini-avatar{width:34px;height:34px;border-radius:9px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-family:var(--display);font-weight:800;font-size:.7rem;color:#fff;overflow:hidden;background:var(--ink3)}
.ch-mini-avatar img{width:100%;height:100%;object-fit:cover}
.ch-mini-name{font-size:.82rem;font-weight:700;color:var(--snow);transition:color .12s}
.ch-mini-count{font-size:.7rem;color:var(--fog)}
.ch-mini-rank{font-family:var(--display);font-size:.7rem;font-weight:800;color:var(--fog);margin-left:auto}

/* ── RESPONSIVE ── */
@media(max-width:960px){.ch-hub-body{grid-template-columns:1fr}}
@media(max-width:600px){
  .ch-hub-hero{padding:36px 18px 0}
  .ch-hub-body{padding:18px 16px 60px;gap:18px}
  .ch-hub-nav-inner{padding:0 16px}
  .ch-hub-nav-search{display:none}
  .ch-grid{grid-template-columns:1fr 1fr}
  .ch-hub-stat strong{font-size:1.3rem}
  .ch-hub-hero-cta{flex-direction:column}
  .ch-btn{width:100%;justify-content:center}
}
@media(max-width:400px){.ch-grid{grid-template-columns:1fr}}

/* ── MOBILE NATIVE APP FEEL ───────────────────────────── */
@supports(padding-bottom: env(safe-area-inset-bottom)) {
  .ch-hub { padding-bottom: env(safe-area-inset-bottom); }
}
/* Momentum scrolling */
.ch-hub { -webkit-overflow-scrolling: touch; }
/* Remove tap highlight */
.ch-btn, .ch-card, .ch-feed-item, .ch-mini-community { -webkit-tap-highlight-color: transparent; }
/* Touch targets min 44px */
.ch-btn { min-height: 44px; }
.ch-card-join-sm { min-height: 36px; min-width: 70px; }
/* Mobile: sidebar goes BELOW grid on mobile (order fix) */
@media(max-width:960px) {
  .ch-hub-body { grid-template-columns: 1fr; }
  .ch-sidebar { order: 2; } /* sidebar after main on mobile */
  /* Full-width hero on mobile */
  .ch-hub-hero-cta .ch-btn { flex: 1; }
}
@media(max-width:600px) {
  /* Hero condensed on mobile */
  .ch-hub-hero { padding: 28px 16px 0; }
  .ch-hub-hero-title { font-size: 1.8rem; letter-spacing: -.05em; }
  .ch-hub-hero-title br { display: none; }
  .ch-hub-hero-sub { font-size: .88rem; }
  /* Stats smaller */
  .ch-hub-stat strong { font-size: 1.2rem; }
  .ch-hub-stat { padding: 12px 20px 12px 0; }
  /* Cards: 2-column grid on phones, 1-col on tiny */
  .ch-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  /* Card condensed */
  .ch-card-cover-gradient, .ch-card-cover { height: 56px; }
  .ch-card-avatar { width: 38px; height: 38px; border-radius: 10px; font-size: .75rem; }
  .ch-card-body { padding: 0 12px 12px; }
  .ch-card-name { font-size: .82rem; }
  .ch-card-desc { font-size: .72rem; -webkit-line-clamp: 2; }
  .ch-card-footer { font-size: .66rem; gap: 8px; }
  /* Feed condensed */
  .ch-feed-item { padding: 12px 14px; }
  .ch-feed-title { font-size: .84rem; }
  /* Nav search hidden on mobile */
  .ch-hub-nav-search { display: none; }
  /* Body padding */
  .ch-hub-body { padding: 14px 12px 80px; gap: 14px; }
}
@media(max-width:380px) {
  .ch-grid { grid-template-columns: 1fr; }
}