/* ════════ Ask Zincky — component styles ════════
   Adapted verbatim from the approved mockup; theme-able colours now reference
   tokens.css so light/dark is a variable swap. New components (figures, answer
   actions, markdown/code, theme toggle, chats) are appended at the end. */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;font-family:var(--sans);background:#0b1a2a;color:var(--text-1);-webkit-font-smoothing:antialiased;overflow:hidden}

@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes msgIn{from{opacity:0;transform:translateY(12px) scale(.99)}to{opacity:1;transform:translateY(0) scale(1)}}
@keyframes uMsgIn{from{opacity:0;transform:translateY(8px) translateX(8px)}to{opacity:1;transform:translateY(0) translateX(0)}}
@keyframes popIn{from{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}
@keyframes dotb{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-6px);opacity:1}}
@keyframes growbar{from{transform:scaleY(0)}to{transform:scaleY(1)}}
@keyframes micpulse{0%,100%{box-shadow:0 0 0 0 rgba(224,104,90,.4)}50%{box-shadow:0 0 0 9px rgba(224,104,90,0)}}

/* ════════ SPLASH ════════ */
#intro{position:fixed;inset:0;z-index:100;overflow:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;
  background:var(--app-bg);transition:opacity .6s ease,visibility .6s}
#intro.gone{opacity:0;visibility:hidden;pointer-events:none}
.intro-wv{position:absolute;left:0;right:0;bottom:0;width:100%;height:48%;object-fit:cover;object-position:bottom;
  opacity:var(--wave-op);pointer-events:none;mask-image:linear-gradient(to bottom,transparent,#000 72%);-webkit-mask-image:linear-gradient(to bottom,transparent,#000 72%)}
.intro-word{position:relative;z-index:2;font-family:var(--display);font-size:clamp(50px,7vw,86px);font-weight:400;letter-spacing:.02em;
  text-transform:uppercase;color:#fff;line-height:1;text-shadow:0 3px 30px rgba(6,21,40,.3);animation:fadeUp .6s ease both}
.intro-word b{font-weight:400;color:#eafff8}
.intro-sub{position:relative;z-index:2;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.85);
  text-shadow:0 1px 8px rgba(6,21,40,.25);animation:fadeIn .9s .35s ease both}

/* ════════ APP ════════ */
#app{position:fixed;inset:0;z-index:1;display:flex;opacity:0;transition:opacity .5s ease;overflow:hidden;background:var(--app-bg)}
#app.show{opacity:1}
.app-wv{position:absolute;left:0;right:0;bottom:0;width:100%;height:48%;object-fit:cover;object-position:bottom;
  opacity:var(--wave-op);pointer-events:none;z-index:0;
  mask-image:linear-gradient(to bottom,transparent,#000 72%);-webkit-mask-image:linear-gradient(to bottom,transparent,#000 72%)}

/* ── Sidebar ── */
.side{width:268px;flex-shrink:0;background:var(--side-bg);backdrop-filter:blur(24px) saturate(1.3);border-right:1px solid var(--side-border);
  display:flex;flex-direction:column;overflow:hidden;transition:width .26s var(--ease),left .3s var(--ease);position:relative;z-index:2}
.side.collapsed{width:70px}
.side-head{display:flex;align-items:center;justify-content:space-between;height:60px;padding:0 16px;flex-shrink:0}
.side-mark{height:30px;width:auto;display:block;transition:opacity .2s}
.side.collapsed .side-mark{opacity:0;width:0}
.side-collapse{width:34px;height:34px;border-radius:9px;border:none;background:transparent;color:var(--text-2);cursor:pointer;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .15s}
.side-collapse:hover{background:var(--surface-3);color:var(--text-1)}
.side-collapse svg{width:19px;height:19px}
.side-body{flex:1;overflow-y:auto;overflow-x:hidden;padding:6px 12px 14px;scrollbar-width:thin;scrollbar-color:var(--surface-3) transparent}
.side-body::-webkit-scrollbar{width:6px}
.side-body::-webkit-scrollbar-thumb{background:var(--surface-3);border-radius:5px}

.nav-new{display:flex;align-items:center;gap:12px;width:100%;height:44px;padding:0 13px;margin-bottom:18px;
  background:transparent;border:1px solid var(--border-2);border-radius:11px;cursor:pointer;color:var(--text-1);
  font-family:var(--sans);font-size:14px;font-weight:600;transition:all .15s var(--ease);white-space:nowrap}
.nav-new:hover{background:var(--surface-3);border-color:var(--border-2)}
.nav-new .ic{width:24px;height:24px;flex-shrink:0;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;color:var(--on-grad)}
.nav-new .ic svg{width:13px;height:13px}
.side.collapsed .nav-new{justify-content:center;padding:0;gap:0}
.side.collapsed .nav-new .tx{display:none}

.nav-label{font-family:var(--display);font-size:13px;font-weight:400;letter-spacing:.06em;text-transform:uppercase;
  color:var(--text-3);padding:0 10px;margin-bottom:8px;white-space:nowrap}
.side.collapsed .nav-label{opacity:0;height:6px;margin:0;overflow:hidden}

.topic-item{display:flex;align-items:center;gap:12px;padding:9px 10px;border-radius:9px;cursor:pointer;margin-bottom:2px;
  transition:background .18s var(--ease),transform .18s var(--ease);white-space:nowrap}
.topic-item:hover{background:var(--surface-3)}
.topic-item.on{background:rgba(31,194,176,.12)}
.topic-ic{width:18px;height:18px;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:var(--text-2);transition:color .18s}
.topic-ic svg{width:18px;height:18px}
.topic-item:hover .topic-ic,.topic-item.on .topic-ic{color:var(--teal)}
.topic-tx{font-size:13.5px;font-weight:500;color:var(--text-2);transition:color .18s}
.topic-item:hover .topic-tx{color:var(--text-1)}
.topic-item.on .topic-tx{color:var(--teal);font-weight:600}
.side.collapsed .topic-item{justify-content:center;padding:9px 0}
.side.collapsed .topic-tx{display:none}

.nav-sec{margin-top:18px}
.nav-label-row{display:flex;align-items:center;justify-content:space-between;padding:0 10px;margin-bottom:8px}
.nav-label-row .nav-label{padding:0;margin:0}
.clear-btn{font-family:var(--sans);font-size:11px;font-weight:500;color:var(--text-3);background:none;border:none;cursor:pointer;padding:3px 6px;border-radius:5px;transition:all .15s}
.clear-btn:hover{color:var(--down);background:rgba(224,104,90,.1)}
.side.collapsed .nav-sec{display:none}

.hist-list{display:flex;flex-direction:column;gap:1px}
.hist-empty{padding:8px 10px;font-size:12.5px;color:var(--text-3);line-height:1.5}
.hist-item{display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:8px;cursor:pointer;transition:all .15s;animation:fadeUp .3s ease both}
.hist-item:hover{background:var(--surface-3)}
.hist-item.on{background:var(--surface-3)}
.hist-ic{width:16px;height:16px;flex-shrink:0;font-size:12px;display:flex;align-items:center;justify-content:center;opacity:.85}
.hist-tx{flex:1;min-width:0;font-size:13px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hist-item:hover .hist-tx,.hist-item.on .hist-tx{color:var(--text-1)}
.hist-edit{flex:1;min-width:0;font-size:13px;font-family:var(--sans);color:var(--text-1);background:var(--bubble);border:1px solid var(--teal);border-radius:6px;padding:3px 6px;outline:none}
.hist-act{width:24px;height:24px;border:none;background:none;border-radius:6px;color:var(--text-3);cursor:pointer;opacity:0;display:flex;align-items:center;justify-content:center;transition:all .15s;flex-shrink:0}
.hist-item:hover .hist-act{opacity:1}
.hist-act:hover{background:var(--surface-3);color:var(--text-1)}
.hist-act.del:hover{background:rgba(224,104,90,.12);color:var(--down)}
.hist-act svg{width:13px;height:13px}

.side-foot{flex-shrink:0;padding:10px 12px;border-top:1px solid var(--border)}
.foot-link{display:flex;align-items:center;gap:11px;padding:9px 11px;border-radius:9px;text-decoration:none;
  color:var(--text-2);font-size:13px;font-weight:500;transition:all .15s;white-space:nowrap}
.foot-link:hover{background:var(--surface-3);color:var(--text-1)}
.foot-link svg{width:17px;height:17px;flex-shrink:0}
.side.collapsed .foot-link{justify-content:center;padding:9px 0}
.side.collapsed .foot-link span{display:none}

/* ── Main ── */
.main{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0;position:relative;z-index:1}
.topbar{height:54px;flex-shrink:0;display:flex;align-items:center;justify-content:space-between;padding:0 18px;gap:10px}
.top-burger{display:none;width:38px;height:38px;border-radius:9px;border:none;background:transparent;color:var(--text-2);cursor:pointer;align-items:center;justify-content:center}
.top-burger:hover{background:var(--surface-3)}
.top-burger svg{width:20px;height:20px}
.top-sp{flex:1}
.top-actions{display:flex;align-items:center;gap:10px}
.top-theme{width:38px;height:38px;border-radius:9px;border:1px solid var(--border-2);background:transparent;color:var(--text-2);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s}
.top-theme:hover{color:var(--text-1);border-color:var(--text-3);background:var(--surface-2)}
.top-theme svg{width:18px;height:18px}
.top-report{display:flex;align-items:center;gap:7px;font-size:12.5px;font-weight:500;color:var(--text-2);text-decoration:none;
  border:1px solid var(--border-2);border-radius:9px;padding:7px 13px;transition:all .15s}
.top-report:hover{color:var(--text-1);border-color:var(--text-3);background:var(--surface-2)}
.top-report svg{width:14px;height:14px}

.stage{flex:1;overflow-y:auto;display:flex;flex-direction:column;scrollbar-width:thin;scrollbar-color:var(--surface-3) transparent}
.stage::-webkit-scrollbar{width:8px}
.stage::-webkit-scrollbar-thumb{background:var(--surface-3);border-radius:6px}

/* ── Hub ── */
.hub{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px 24px 60px;min-height:0}
.hub.gone{display:none}
.hub-center{width:100%;max-width:680px;display:flex;flex-direction:column;align-items:center}
.hub-word{font-family:var(--display);font-size:clamp(46px,6.5vw,78px);font-weight:400;letter-spacing:.02em;text-transform:uppercase;
  color:#fff;line-height:1;margin-bottom:34px;text-shadow:0 3px 30px rgba(6,21,40,.3);animation:fadeUp .55s var(--ease) both}
.hub-word b{font-weight:400;color:#eafff8}
#hubInputSlot{width:100%;animation:fadeUp .55s .08s var(--ease) both}

/* ── Ask box ── */
.ask{width:100%;max-width:680px;margin:0 auto;background:var(--glass);backdrop-filter:blur(22px) saturate(1.3);border:1px solid var(--glass-border);
  border-radius:20px;padding:14px 16px 10px;box-shadow:var(--sh);transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.ask:focus-within{border-color:rgba(31,194,176,.5);box-shadow:var(--sh),0 0 0 3px rgba(31,194,176,.1)}
.ask-ta{width:100%;border:none;outline:none;resize:none;background:none;font-family:var(--sans);font-size:15px;color:var(--text-1);
  line-height:1.5;max-height:160px;min-height:26px;padding:2px 2px}
.ask-ta::placeholder{color:var(--text-3)}
.ask-row{display:flex;align-items:center;gap:8px;margin-top:8px}
.ask-sp{flex:1}
.ibtn{width:36px;height:36px;border-radius:50%;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s var(--ease);flex-shrink:0}
.ibtn svg{width:17px;height:17px}
.mic{background:transparent;color:var(--text-2);border:1px solid var(--border-2)}
.mic:hover{background:var(--surface-3);color:var(--teal);border-color:rgba(31,194,176,.3)}
.mic.live{background:rgba(224,104,90,.14);color:var(--down);border-color:rgba(224,104,90,.4);animation:micpulse 1.2s ease-in-out infinite}
.mic.live .mic-i{display:none}
.mic .wave{display:none;gap:2px;align-items:center}
.mic.live .wave{display:flex}
.wbar{width:3px;border-radius:2px;background:var(--down);animation:dotb 1s ease-in-out infinite}
.wbar:nth-child(1){height:5px}.wbar:nth-child(2){height:11px;animation-delay:.15s}.wbar:nth-child(3){height:15px;animation-delay:.3s}.wbar:nth-child(4){height:11px;animation-delay:.45s}.wbar:nth-child(5){height:5px;animation-delay:.6s}
.send{background:var(--surface-3);color:var(--text-3)}
.send.on{background:var(--grad);color:#fff;box-shadow:0 4px 14px rgba(31,194,176,.35)}
.send.on:hover{transform:scale(1.06)}
.send.on:active{transform:scale(.95)}
.send.stop{background:rgba(224,104,90,.16);color:var(--down);box-shadow:none}
.send.stop:hover{background:rgba(224,104,90,.26)}

/* ── Starter cards ── */
.starters{display:flex;gap:10px;width:100%;max-width:680px;margin-top:16px;flex-wrap:wrap;animation:fadeUp .55s .16s var(--ease) both}
.scard{flex:1;min-width:180px;display:flex;align-items:center;gap:10px;text-align:left;
  background:var(--glass-2);backdrop-filter:blur(18px) saturate(1.25);border:1px solid var(--glass-border);border-radius:14px;padding:13px 14px;cursor:pointer;transition:all .2s var(--ease)}
.scard:hover{border-color:rgba(12,124,109,.45);transform:translateY(-2px)}
.scard-ic{width:30px;height:30px;border-radius:9px;flex-shrink:0;display:flex;align-items:center;justify-content:center;background:rgba(31,194,176,.12);color:var(--teal)}
.scard-ic svg{width:16px;height:16px}
.scard-tx{font-size:13px;font-weight:500;color:var(--text-1);line-height:1.4}

/* ── Thread ── */
.thread{display:none;flex-direction:column;width:100%;max-width:760px;margin:0 auto;padding:30px 28px 24px}
.thread.show{display:flex}
.zrow{display:flex;gap:14px;margin-bottom:30px;animation:msgIn .5s var(--ease) both}
.zav{width:34px;height:34px;flex-shrink:0;display:flex;align-items:center;justify-content:center;margin-top:1px}
.zav img{width:100%;height:100%;object-fit:contain}
.zav span{width:32px;height:32px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-family:var(--display);font-size:16px;color:var(--on-grad)}
.zbody{flex:1;min-width:0;padding-top:2px}
.zname{font-size:12px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:6px;text-shadow:0 1px 8px rgba(6,21,40,.32)}
.ztext{font-size:15px;line-height:1.72;color:var(--text-1);background:var(--bubble);
  border:1px solid var(--bubble-border);border-radius:5px 16px 16px 16px;padding:14px 17px;box-shadow:0 6px 22px rgba(6,21,40,.12)}
.ztext.oos{border-left:3px solid var(--green)}

.ztyping{display:inline-flex;gap:5px;align-items:center;padding:6px 0}
.ztyping i{width:8px;height:8px;border-radius:50%;background:var(--text-3);animation:dotb 1.2s ease-in-out infinite}
.ztyping i:nth-child(2){animation-delay:.16s}.ztyping i:nth-child(3){animation-delay:.32s}

/* markdown inside answers */
.ztext p{margin:0 0 10px}.ztext p:last-child{margin-bottom:0}
.ztext strong{font-weight:700;color:var(--text-1)}
.ztext h1,.ztext h2,.ztext h3,.ztext h4{font-weight:700;line-height:1.3;margin:14px 0 8px}
.ztext h1{font-size:19px}.ztext h2{font-size:17px}.ztext h3{font-size:15.5px}
.ztext ul,.ztext ol{margin:6px 0 10px;padding-left:22px}
.ztext li{margin:3px 0}
.ztext a{color:var(--blue);text-decoration:underline;text-underline-offset:2px}
.ztext code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;background:var(--surface-3);padding:1px 5px;border-radius:5px}
.ztext table{border-collapse:collapse;margin:8px 0;font-size:13.5px;width:100%}
.ztext th,.ztext td{border:1px solid var(--border);padding:6px 9px;text-align:left}
.ztext th{background:var(--surface-3);font-weight:600}
.codewrap{position:relative;margin:10px 0}
.codewrap pre{background:var(--surface-3);border:1px solid var(--border);border-radius:10px;padding:12px 14px;overflow-x:auto}
.codewrap pre code{background:none;padding:0;font-size:12.5px;line-height:1.6;color:var(--text-1)}
.code-copy{position:absolute;top:7px;right:7px;font-size:11px;font-weight:600;color:var(--text-2);background:var(--glass);border:1px solid var(--border-2);border-radius:6px;padding:3px 8px;cursor:pointer;opacity:.85}
.code-copy:hover{color:var(--teal);border-color:rgba(31,194,176,.4)}

/* data card */
.dcard{margin-top:16px;background:var(--card-bg);border:1px solid var(--bubble-border);box-shadow:0 6px 22px rgba(6,21,40,.12);border-radius:16px;padding:20px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;animation:popIn .5s var(--ease) both;transition:transform .25s var(--ease),border-color .25s}
.dcard:hover{transform:translateY(-2px);border-color:rgba(31,194,176,.3)}
.dcard-val{font-family:var(--display);font-size:40px;font-weight:400;letter-spacing:.02em;text-transform:uppercase;color:var(--text-1);line-height:.95}
.dcard-lab{font-size:12.5px;color:var(--text-2);margin-top:7px;font-weight:500}
.dcard-delta{display:inline-flex;align-items:center;gap:4px;font-size:12.5px;font-weight:600;margin-top:10px;padding:3px 9px;border-radius:20px}
.dcard-delta.up{color:var(--teal);background:rgba(31,194,176,.12)}
.dcard-delta.down{color:var(--down);background:rgba(224,104,90,.12)}
.dcard-delta svg{width:12px;height:12px}
.dcard-delta small{font-weight:500;color:var(--text-3);margin-left:2px}
.dchart{display:flex;align-items:flex-end;gap:7px;height:60px;flex-shrink:0}
.dbar-wrap{display:flex;flex-direction:column;align-items:center;gap:6px;height:100%}
.dbar-col{flex:1;display:flex;align-items:flex-end;width:20px}
.dbar{width:100%;border-radius:5px 5px 2px 2px;background:var(--surface-3);transform-origin:bottom;animation:growbar .6s var(--ease) both}
.dbar.hi{background:var(--grad)}
.dbar-lab{font-size:10px;color:var(--text-3);font-weight:500}

/* source figures */
.zfigs{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}
.zfig{max-width:280px;background:var(--card-bg);border:1px solid var(--bubble-border);border-radius:12px;overflow:hidden;box-shadow:0 6px 22px rgba(6,21,40,.1);animation:popIn .4s var(--ease) both}
.zfig img{display:block;width:100%;height:auto;cursor:zoom-in}
.zfig-cap{font-size:11.5px;color:var(--text-3);padding:7px 10px;line-height:1.4}

/* citations */
.zcite{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}
.cite{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:600;color:#0a5e53;
  background:var(--cite-bg);border:1px solid rgba(12,124,109,.4);border-radius:8px;padding:5px 11px;cursor:default}
[data-theme="dark"] .cite{color:var(--teal)}
.cite svg{width:11px;height:11px}

/* answer actions */
.zactions{display:flex;gap:6px;margin-top:12px}
.zact{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;color:var(--text-2);
  background:var(--surface-3);border:1px solid var(--border-2);border-radius:8px;padding:6px 12px;cursor:pointer;transition:all .15s}
.zact .zact-ic{display:inline-flex;align-items:center}
.zact svg{width:14px;height:14px}

/* chips */
.zchips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.zchip-l{width:100%;font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:rgba(255,255,255,.9);text-shadow:0 1px 6px rgba(6,21,40,.25);margin-bottom:3px}
.zchip{font-family:var(--sans);font-size:13px;font-weight:500;color:var(--text-1);background:var(--glass);backdrop-filter:blur(14px);
  border:1px solid var(--glass-border);border-radius:20px;padding:8px 14px;cursor:pointer;transition:all .2s var(--ease)}
.zchip:hover{border-color:rgba(12,124,109,.5);color:var(--teal-2);transform:translateY(-2px)}

/* topic intro tiles */
.ztiles{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:15px}
.ztile{background:var(--glass);backdrop-filter:blur(14px);border:1px solid var(--glass-border);border-radius:12px;padding:13px 15px;cursor:pointer;
  font-size:13.5px;color:var(--text-1);line-height:1.45;transition:all .2s var(--ease)}
.ztile:hover{border-color:rgba(12,124,109,.45);transform:translateY(-1px)}

/* user message */
.urow{display:flex;justify-content:flex-end;margin-bottom:30px;animation:uMsgIn .42s var(--ease) both}
.ubub{max-width:74%}
.ubub-tx{background:linear-gradient(135deg,#0063a8,#075089);color:#fff;font-size:14.5px;line-height:1.55;padding:11px 16px;border-radius:16px 16px 5px 16px;box-shadow:0 4px 14px rgba(6,40,80,.25);white-space:pre-wrap;word-wrap:break-word}
.ubub-tm{font-size:11px;color:rgba(255,255,255,.82);text-align:right;margin-top:6px;text-shadow:0 1px 5px rgba(6,21,40,.2)}

/* ── Bottom input ── */
.askwrap{flex-shrink:0;padding:12px 28px 22px;display:none}
.askwrap.show{display:block}
.askwrap .ask{box-shadow:0 -2px 24px rgba(0,0,0,.3)}
.ask-foot{max-width:760px;margin:8px auto 0;text-align:center;font-size:11px;color:var(--text-3)}

/* scroll pill */
.scrollpill{position:absolute;bottom:104px;left:50%;transform:translateX(-50%);display:none;
  background:var(--surface-2);border:1px solid var(--border-2);color:var(--text-1);font-size:12.5px;font-weight:600;
  border-radius:20px;padding:7px 16px;cursor:pointer;box-shadow:var(--sh);z-index:10}
.scrollpill.show{display:block}

/* toast */
.toast{position:fixed;bottom:96px;left:50%;transform:translateX(-50%) translateY(14px);z-index:60;
  background:rgba(16,21,28,.92);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.12);color:#eef2f6;border-radius:20px;padding:9px 18px;font-size:13px;font-weight:500;
  display:flex;align-items:center;gap:8px;opacity:0;pointer-events:none;transition:all .3s}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast-dot{width:8px;height:8px;border-radius:50%;background:var(--down);animation:dotb 1s ease-in-out infinite}

.backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:35;backdrop-filter:blur(2px)}
.backdrop.show{display:block}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;background:rgba(4,10,18,.86);padding:30px;cursor:zoom-out}
.lightbox.show{display:flex}
.lightbox img{max-width:100%;max-height:100%;border-radius:10px;box-shadow:var(--sh)}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001s!important;animation-iteration-count:1!important;transition-duration:.001s!important}
}

/* ════════ MOBILE ════════ */
@media(max-width:820px){
  .side{position:fixed;top:0;bottom:0;left:-100%;width:80%;max-width:300px;box-shadow:var(--sh);z-index:40}
  .side.open{left:0}
  .side.collapsed{width:80%;max-width:300px}
  .top-burger{display:flex}
  .hub{padding:20px 18px 40px}
  .hub-word{font-size:46px;margin-bottom:26px}
  .thread{padding:22px 16px 18px}
  .askwrap{padding:10px 16px calc(16px + env(safe-area-inset-bottom,0px))}
  .starters{flex-direction:column}
  .scard{min-width:0}
  .ztiles{grid-template-columns:1fr}
  .ubub{max-width:86%}
  .dcard{flex-direction:column;align-items:flex-start;gap:16px}
  .zfig{max-width:100%}
}