/* ==========================================================
   NOXCHO.AI
   ==========================================================
   Стекло невидимо на плоском фоне: чтобы слой читался как
   стекло, под ним должно быть что-то, поддающееся размытию.
   Поэтому позади всего живёт мягкий градиентный фон, а панели
   получают блик по верхней кромке — так свет ложится на
   настоящее стекло.
   ========================================================== */

:root{
  --r-xs:12px; --r-sm:16px; --r:22px; --r-lg:30px; --r-xl:38px;
  --header:56px;
  --safe-t:env(safe-area-inset-top,0px);
  --safe-b:env(safe-area-inset-bottom,0px);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text",system-ui,"Segoe UI",Roboto,sans-serif;

  /* Одна кривая на всё приложение: вход быстрый, выход мягкий */
  --ease:cubic-bezier(.22,1,.36,1);
  --ease-back:cubic-bezier(.34,1.56,.64,1);
}

html[data-theme="dark"]{
  color-scheme:dark;
  --bg:#08090B;
  --ink-1:#F3F5F8; --ink-2:#9BA4B0; --ink-3:#646C77;

  --glass:rgba(255,255,255,.065);
  --glass-hi:rgba(255,255,255,.105);
  --glass-line:rgba(255,255,255,.13);
  --spec:rgba(255,255,255,.34);      /* блик по верхней кромке */
  --veil:rgba(10,11,14,.55);         /* затемнение под шторкой */

  --brand:#E9B44C; --brand-2:#F7D794; --brand-ink:#1B1305;
  --accent-ink:#F0C266;
  --danger:#FF6B60;

  --bubble-me:rgba(233,180,76,.17);
  --bubble-me-line:rgba(233,180,76,.30);

  --blob-1:rgba(233,180,76,.14);
  --blob-2:rgba(72,132,255,.11);
  --blob-3:rgba(190,80,255,.08);

  --shadow-lg:0 24px 70px rgba(0,0,0,.62);
  --shadow-md:0 10px 34px rgba(0,0,0,.5);
}

html[data-theme="light"]{
  color-scheme:light;
  --bg:#ECECF1;
  --ink-1:#0A0C11; --ink-2:#5A626D; --ink-3:#8E96A1;

  --glass:rgba(255,255,255,.60);
  --glass-hi:rgba(255,255,255,.80);
  --glass-line:rgba(255,255,255,.85);
  --spec:rgba(255,255,255,.95);
  --veil:rgba(150,155,168,.42);

  --brand:#E0A02C; --brand-2:#F3C264; --brand-ink:#241804;
  --accent-ink:#9A6A0A;
  --danger:#D93A2E;

  --bubble-me:rgba(224,160,44,.24);
  --bubble-me-line:rgba(224,160,44,.42);

  --blob-1:rgba(255,190,80,.34);
  --blob-2:rgba(90,150,255,.26);
  --blob-3:rgba(200,110,255,.20);

  --shadow-lg:0 24px 60px rgba(60,66,84,.20);
  --shadow-md:0 10px 30px rgba(60,66,84,.16);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%;margin:0;overscroll-behavior:none}
body{
  font:400 16px/1.5 var(--font);
  background:var(--bg);color:var(--ink-1);
  -webkit-font-smoothing:antialiased;
  overflow:hidden;
  transition:background .5s var(--ease),color .5s var(--ease);
}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:10px}

h1{margin:0;font-size:clamp(1.6rem,6vw,2.05rem);font-weight:700;letter-spacing:-.03em;line-height:1.1}
h2{margin:0;font-size:1.0625rem;font-weight:620;letter-spacing:-.016em;line-height:1.25}

/* ---------- Фон, который стеклу есть что преломлять ---------- */
body::before{
  content:'';position:fixed;inset:-25%;z-index:0;pointer-events:none;
  background:
    radial-gradient(38% 30% at 18% 12%, var(--blob-1), transparent 70%),
    radial-gradient(34% 28% at 84% 26%, var(--blob-2), transparent 70%),
    radial-gradient(40% 34% at 62% 88%, var(--blob-3), transparent 72%);
  filter:blur(30px);
  animation:drift 34s ease-in-out infinite alternate;
  transition:opacity .5s var(--ease);
}
@keyframes drift{
  0%{transform:translate3d(0,0,0) scale(1)}
  50%{transform:translate3d(2.5%,-2%,0) scale(1.07)}
  100%{transform:translate3d(-2%,2.5%,0) scale(1.02)}
}

#app{position:relative;z-index:1;height:100dvh;overflow:hidden}
.screen{position:absolute;inset:0;display:none;flex-direction:column}
.screen.on{display:flex}

/* ==========================================================
   Стекло
   ========================================================== */
.glass{
  background:var(--glass);
  backdrop-filter:blur(30px) saturate(190%);
  -webkit-backdrop-filter:blur(30px) saturate(190%);
  border:1px solid var(--glass-line);
  /* Свет ложится на верхнюю кромку и уходит вниз — так стекло
     выглядит объёмным, а не просто полупрозрачным */
  box-shadow:inset 0 1px 0 var(--spec), var(--shadow-md);
}

/* ==========================================================
   Логотип
   ========================================================== */
.brand{display:flex;align-items:center;gap:12px}
.brand .glyph{width:40px;height:40px;flex:none;overflow:visible}
.brand .word{font-size:1.0625rem;font-weight:660;letter-spacing:-.015em}
.brand .word b{color:var(--accent-ink);font-weight:660}
.glyph .arc{
  stroke-dasharray:var(--len,60);stroke-dashoffset:var(--len,60);
  animation:draw .9s var(--ease) forwards;
}
.glyph .arc:nth-of-type(2){animation-delay:.09s}
.glyph .arc:nth-of-type(3){animation-delay:.18s}
.glyph .core{transform-origin:center;animation:pop .55s var(--ease-back) forwards}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes pop{from{transform:scale(0)}to{transform:scale(1)}}

/* ==========================================================
   Кнопки
   ========================================================== */
.btn{
  display:flex;align-items:center;justify-content:center;gap:9px;
  width:100%;padding:16px;border-radius:var(--r-sm);
  background:linear-gradient(180deg,var(--brand-2),var(--brand));
  color:var(--brand-ink);font-weight:660;letter-spacing:-.01em;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.45),0 6px 20px rgba(0,0,0,.16);
  transition:transform .16s var(--ease),filter .18s,opacity .18s;
}
.btn:active{transform:scale(.968);filter:brightness(.93)}
.btn[disabled]{opacity:.4;pointer-events:none;box-shadow:none}
.btn.ghost{
  background:var(--glass-hi);color:var(--ink-1);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 var(--spec);
}
.btn.danger{background:none;border:1px solid var(--danger);color:var(--danger);box-shadow:none}
.btn.slim{padding:13px;border-radius:var(--r-xs);font-size:.9375rem}

.link{display:block;text-align:center;color:var(--ink-3);font-size:.875rem;
      padding:11px;text-decoration:none;transition:color .18s}
.link:active,.link:hover{color:var(--ink-2)}

.icon-btn{
  flex:none;width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;color:var(--ink-2);
  transition:transform .16s var(--ease),background .2s,color .2s;
}
.icon-btn:active{transform:scale(.86);background:var(--glass-hi)}
.icon-btn svg{width:21px;height:21px}
a.icon-btn{text-decoration:none}
a.icon-btn[hidden]{display:none}

/* ==========================================================
   Поля
   ========================================================== */
.field{display:flex;flex-direction:column;gap:7px;min-width:0}
.field label{font-size:.8125rem;color:var(--ink-2)}
.field .hint{font-size:.75rem;color:var(--ink-3);line-height:1.45}
.field input{
  padding:15px 16px;border-radius:var(--r-xs);
  background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  box-shadow:inset 0 1px 0 var(--spec);
  font-size:16px;                    /* меньше 16px — iOS зумит при фокусе */
  transition:border-color .2s,background .2s;
}
.field input:focus{outline:none;border-color:var(--brand);background:var(--glass-hi)}
.field input::placeholder{color:var(--ink-3)}

.msg-box{padding:12px 15px;border-radius:var(--r-xs);font-size:.875rem;
         line-height:1.5;animation:slip .32s var(--ease)}
.msg-box:empty{display:none}
.msg-box.err{background:color-mix(in srgb,var(--danger) 16%,transparent);color:var(--danger)}
.msg-box.ok{background:color-mix(in srgb,var(--brand) 18%,transparent);color:var(--accent-ink)}
@keyframes slip{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* ==========================================================
   Установка и вход
   ========================================================== */
#install,#login{
  padding:calc(var(--safe-t) + 34px) 24px calc(var(--safe-b) + 22px);
  justify-content:center;gap:26px;max-width:440px;margin:0 auto;width:100%;
}
.lede{color:var(--ink-2);margin:12px 0 0;max-width:34ch;line-height:1.55}

.steps{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.steps li{
  display:flex;gap:14px;align-items:flex-start;padding:15px 16px;
  border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(24px) saturate(180%);
  -webkit-backdrop-filter:blur(24px) saturate(180%);
  box-shadow:inset 0 1px 0 var(--spec);
  opacity:0;animation:rise .55s var(--ease) forwards;
}
.steps li:nth-child(1){animation-delay:.05s}
.steps li:nth-child(2){animation-delay:.12s}
.steps li:nth-child(3){animation-delay:.19s}
@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

.steps .n{flex:none;width:23px;height:23px;border-radius:50%;
          background:var(--glass-hi);color:var(--accent-ink);
          font-size:.75rem;font-weight:660;display:grid;place-items:center;margin-top:1px}
.steps .t{font-size:.9375rem;line-height:1.45}
.steps b{font-weight:620}
.gl{display:inline-flex;vertical-align:-4px;margin:0 2px;width:18px;height:18px;color:var(--accent-ink)}
.note{color:var(--ink-3);font-size:.8125rem;text-align:center;line-height:1.55;margin:0}

/* ==========================================================
   Шапка — плавающее стекло
   ========================================================== */
.bar{
  position:relative;z-index:5;flex:none;
  padding-top:var(--safe-t);
  display:flex;align-items:center;gap:8px;
  height:calc(var(--header) + var(--safe-t));
  padding-inline:8px 10px;
  background:var(--glass);
  backdrop-filter:blur(34px) saturate(200%);
  -webkit-backdrop-filter:blur(34px) saturate(200%);
  box-shadow:inset 0 -1px 0 var(--glass-line),0 1px 0 var(--spec) inset;
}
.bar .title{flex:1;min-width:0;padding-left:8px}
.bar .title h2{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bar .sub{font-size:.75rem;color:var(--ink-2);margin-top:1px;
          white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.balance{display:inline-flex;align-items:center;gap:5px;font-size:.75rem;
         color:var(--ink-2);font-variant-numeric:tabular-nums;transition:color .35s}
.balance .dot{width:5px;height:5px;border-radius:50%;background:var(--brand)}
.balance.flash{color:var(--accent-ink)}

/* ==========================================================
   Список чатов
   ========================================================== */
.list{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;
      padding:10px 12px calc(var(--safe-b) + 104px)}
.row{
  display:flex;gap:13px;align-items:center;width:100%;
  padding:11px 13px;text-align:left;margin-bottom:6px;
  border-radius:var(--r-sm);
  transition:transform .18s var(--ease),background .2s;
  opacity:0;animation:rise .5s var(--ease) forwards;
  touch-action:pan-y;
}
.row:active{transform:scale(.978);background:var(--glass)}
.row.held{transform:scale(.955);background:var(--glass-hi)}
.ava{
  flex:none;width:47px;height:47px;border-radius:50%;
  display:grid;place-items:center;font-weight:660;font-size:.9375rem;
  letter-spacing:-.02em;color:var(--model);
  background:
    linear-gradient(160deg,color-mix(in srgb,var(--model) 34%,transparent),
                           color-mix(in srgb,var(--model) 10%,transparent)),
    var(--glass);
  border:1px solid color-mix(in srgb,var(--model) 34%,transparent);
  box-shadow:inset 0 1px 0 var(--spec);
}
.row .body{flex:1;min-width:0}
.row .top{display:flex;align-items:baseline;gap:8px}
.row .name{flex:1;min-width:0;font-weight:560;font-size:.9875rem;letter-spacing:-.01em;
           white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row .time{flex:none;font-size:.6875rem;color:var(--ink-3);font-variant-numeric:tabular-nums}
.row .last{font-size:.875rem;color:var(--ink-2);margin-top:2px;
           white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.empty{padding:56px 32px;text-align:center;color:var(--ink-3);
       display:flex;flex-direction:column;gap:10px;align-items:center;
       animation:rise .55s var(--ease)}
.empty strong{color:var(--ink-2);font-weight:560;font-size:.9375rem}
.empty .ring{width:62px;height:62px;border-radius:50%;display:grid;place-items:center;
             background:var(--glass);border:1px solid var(--glass-line);
             backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
             box-shadow:inset 0 1px 0 var(--spec);
             color:var(--ink-3);margin-bottom:4px;animation:breathe 3.6s ease-in-out infinite}
.empty .ring svg{width:26px;height:26px}
@keyframes breathe{0%,100%{transform:scale(1)}50%{transform:scale(1.07)}}

.skel{display:flex;gap:13px;align-items:center;padding:11px 13px;margin-bottom:6px}
.skel .c{width:47px;height:47px;border-radius:50%;flex:none}
.skel .l{flex:1;display:flex;flex-direction:column;gap:8px}
.skel .l i{display:block;height:11px;border-radius:6px}
.skel .l i:first-child{width:42%}
.skel .l i:last-child{width:70%;height:9px}
.skel .c,.skel .l i{background:var(--glass-hi);animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.5}50%{opacity:1}}

/* Кнопка создания — слева снизу */
.fab{
  position:absolute;left:18px;bottom:calc(var(--safe-b) + 22px);
  width:58px;height:58px;border-radius:50%;
  background:linear-gradient(180deg,var(--brand-2),var(--brand));
  color:var(--brand-ink);display:grid;place-items:center;z-index:6;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.5),var(--shadow-lg);
  transition:transform .2s var(--ease-back);
}
.fab:active{transform:scale(.88) rotate(-90deg)}
.fab svg{width:26px;height:26px}

/* ==========================================================
   Чат
   ========================================================== */
#chat{z-index:10;background:var(--bg);transform:translate3d(100%,0,0);will-change:transform}
#chat.on{display:flex}
.dim{position:absolute;inset:0;z-index:9;background:#000;opacity:0;
     pointer-events:none;display:none}
.dim.on{display:block}

.thread{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;
        padding:16px 14px 10px;display:flex;flex-direction:column;gap:9px}
.msg{
  max-width:80%;padding:11px 15px;border-radius:var(--r);
  font-size:.9375rem;line-height:1.5;white-space:pre-wrap;word-break:break-word;
  transform-origin:var(--org,left bottom);
  animation:bubble .46s var(--ease);
  backdrop-filter:blur(24px) saturate(180%);
  -webkit-backdrop-filter:blur(24px) saturate(180%);
  box-shadow:inset 0 1px 0 var(--spec);
}
@keyframes bubble{
  from{opacity:0;transform:translateY(14px) scale(.93)}
  to{opacity:1;transform:none}
}
.msg.me{align-self:flex-end;background:var(--bubble-me);
        border:1px solid var(--bubble-me-line);
        border-bottom-right-radius:8px;--org:right bottom}
.msg.ai{align-self:flex-start;background:var(--glass);
        border:1px solid var(--glass-line);border-bottom-left-radius:8px}
.msg .meta{display:block;font-size:.6875rem;color:var(--ink-3);
           margin-top:6px;font-variant-numeric:tabular-nums}
.msg.err{background:color-mix(in srgb,var(--danger) 16%,transparent);
         border-color:color-mix(in srgb,var(--danger) 34%,transparent);color:var(--danger)}
.msg.typing::after{
  content:'';display:inline-block;width:2px;height:.95em;background:var(--brand);
  vertical-align:-2px;margin-left:2px;animation:blink 1s steps(2) infinite;
}
@keyframes blink{50%{opacity:0}}

.dots{display:inline-flex;gap:5px;padding:5px 0}
.dots i{width:6px;height:6px;border-radius:50%;background:var(--ink-3);
        animation:wave 1.3s ease-in-out infinite}
.dots i:nth-child(2){animation-delay:.16s}
.dots i:nth-child(3){animation-delay:.32s}
@keyframes wave{0%,60%,100%{opacity:.25;transform:translateY(0)}
                30%{opacity:.95;transform:translateY(-3px)}}

.composer{
  flex:none;display:flex;gap:9px;align-items:flex-end;
  padding:10px 12px calc(var(--safe-b) + 10px);
  background:var(--glass);
  backdrop-filter:blur(34px) saturate(200%);
  -webkit-backdrop-filter:blur(34px) saturate(200%);
  box-shadow:inset 0 1px 0 var(--spec),0 -1px 0 var(--glass-line) inset;
}
.composer textarea{
  flex:1;resize:none;max-height:136px;padding:12px 16px;border-radius:22px;
  background:var(--glass-hi);border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 var(--spec);
  font-size:16px;line-height:1.45;transition:border-color .2s;
}
.composer textarea:focus{outline:none;border-color:color-mix(in srgb,var(--brand) 50%,transparent)}
.send{
  flex:none;width:44px;height:44px;border-radius:50%;
  background:linear-gradient(180deg,var(--brand-2),var(--brand));
  color:var(--brand-ink);display:grid;place-items:center;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.45);
  transition:transform .18s var(--ease-back),opacity .22s;
}
.send:active{transform:scale(.86)}
.send[disabled]{opacity:.3;pointer-events:none}
.send svg{width:20px;height:20px}

/* ==========================================================
   Картинки в сообщениях
   ========================================================== */
.msg.has-shot{max-width:92%;padding:8px}
.msg.has-shot .meta{padding:0 7px 2px}
.shot{
  display:block;margin:4px 0;border-radius:var(--r-sm);overflow:hidden;
  background:var(--glass-hi);border:1px solid var(--glass-line);
  min-height:120px;position:relative;text-decoration:none;
  color:var(--ink-3);font-size:.8125rem;
}
.shot img{display:block;width:100%;height:auto;opacity:0;transform:scale(1.03);
          transition:opacity .5s var(--ease),transform .5s var(--ease)}
.shot.ready img{opacity:1;transform:none}
.shot.ready{min-height:0;background:none;border-color:transparent}
.shot:not(.ready):not(.bad)::after{
  content:'';position:absolute;inset:0;background:var(--glass-hi);
  animation:pulse 1.6s ease-in-out infinite;
}
.shot.bad{display:grid;place-items:center;padding:22px;text-align:center;border-style:dashed}
.shot:active img{transform:scale(.985)}

/* ==========================================================
   Шторка
   ========================================================== */
.sheet-wrap{position:absolute;inset:0;z-index:20;display:none;
            align-items:flex-end;justify-content:center}
.sheet-wrap.on{display:flex}
.scrim{position:absolute;inset:0;background:var(--veil);opacity:0;
       backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px)}
.sheet{
  position:relative;width:100%;max-width:460px;
  background:var(--glass-hi);
  backdrop-filter:blur(44px) saturate(200%);
  -webkit-backdrop-filter:blur(44px) saturate(200%);
  border:1px solid var(--glass-line);border-bottom:0;
  border-radius:var(--r-lg) var(--r-lg) 0 0;
  padding:16px 18px calc(var(--safe-b) + 18px);
  display:flex;flex-direction:column;gap:15px;
  transform:translate3d(0,100%,0);will-change:transform;
  max-height:88dvh;overflow-y:auto;
  box-shadow:inset 0 1px 0 var(--spec),var(--shadow-lg);
}
.grip{width:40px;height:5px;border-radius:3px;background:var(--glass-line);
      margin:-2px auto 0;flex:none;touch-action:none}
.sheet-body{display:flex;flex-direction:column;gap:15px}
.sheet-head{padding:2px 0 0;touch-action:none}

.models{display:flex;flex-direction:column;gap:8px}
.model{
  display:flex;align-items:center;gap:12px;width:100%;
  padding:14px 15px;border-radius:var(--r-sm);text-align:left;
  background:var(--glass);border:1.5px solid transparent;
  box-shadow:inset 0 1px 0 var(--spec);
  transition:border-color .22s,transform .16s var(--ease),background .22s;
}
.model:active{transform:scale(.985)}
.model[aria-checked="true"]{border-color:var(--model);
  background:color-mix(in srgb,var(--model) 13%,transparent)}
.model[disabled]{opacity:.35}
.model .dot{width:10px;height:10px;border-radius:50%;background:var(--model);flex:none;
            box-shadow:0 0 0 4px color-mix(in srgb,var(--model) 20%,transparent)}
.model .n{flex:1;font-size:.9375rem;font-weight:540}
.model .tag{font-size:.75rem;color:var(--ink-3)}

/* Меню */
.menu{display:flex;flex-direction:column;gap:2px}
.menu button{
  display:flex;align-items:center;gap:13px;width:100%;padding:15px 16px;
  text-align:left;background:var(--glass);
  transition:background .18s,transform .16s var(--ease);
}
.menu button:first-child{border-radius:var(--r-sm) var(--r-sm) 0 0}
.menu button:last-child{border-radius:0 0 var(--r-sm) var(--r-sm)}
.menu button:only-child{border-radius:var(--r-sm)}
.menu button:active{background:var(--glass-hi);transform:scale(.99)}
.menu .ico{flex:none;width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
           background:color-mix(in srgb,var(--brand) 18%,transparent);color:var(--accent-ink)}
.menu .ico svg{width:17px;height:17px}
.menu .tx{flex:1;min-width:0}
.menu .tx b{display:block;font-size:.9375rem;font-weight:540;letter-spacing:-.008em}
.menu .tx span{display:block;font-size:.75rem;color:var(--ink-3);margin-top:2px}
.menu .arr{color:var(--ink-3);flex:none}
.menu .arr svg{width:16px;height:16px}
.menu button.warn .ico{background:color-mix(in srgb,var(--danger) 16%,transparent);color:var(--danger)}
.menu button.warn .tx b{color:var(--danger)}

.wallet{
  border-radius:var(--r);padding:20px;
  background:
    radial-gradient(120% 90% at 88% 6%,color-mix(in srgb,var(--brand) 26%,transparent),transparent 62%),
    var(--glass);
  border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 var(--spec);
}
.wallet .k{font-size:.75rem;color:var(--ink-2);letter-spacing:.02em;text-transform:uppercase}
.wallet .v{font-size:2.15rem;font-weight:700;letter-spacing:-.035em;
           font-variant-numeric:tabular-nums;margin-top:5px;line-height:1}
.wallet .v span{font-size:1.2rem;color:var(--ink-2);font-weight:560;margin-left:3px}

/* ---------- Переключатель темы ---------- */
.seg{
  position:relative;display:grid;grid-template-columns:repeat(3,1fr);
  padding:4px;border-radius:var(--r-xs);
  background:var(--glass);border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 var(--spec);
}
.seg .pill{
  position:absolute;top:4px;bottom:4px;left:4px;
  width:calc((100% - 8px) / 3);border-radius:11px;
  background:var(--glass-hi);border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 var(--spec),0 2px 8px rgba(0,0,0,.14);
  /* Индикатор едет пружиной — жест «переключил» читается физически */
  transition:transform .42s var(--ease-back);
}
.seg button{
  position:relative;z-index:1;padding:10px 4px;font-size:.8125rem;font-weight:560;
  color:var(--ink-2);border-radius:11px;transition:color .28s;
}
.seg button[aria-pressed="true"]{color:var(--ink-1)}

/* ==========================================================
   Уведомление
   ========================================================== */
#toast{
  position:absolute;left:50%;bottom:calc(var(--safe-b) + 26px);
  transform:translate(-50%,160%);
  background:var(--glass-hi);border:1px solid var(--glass-line);
  backdrop-filter:blur(30px) saturate(190%);
  -webkit-backdrop-filter:blur(30px) saturate(190%);
  box-shadow:inset 0 1px 0 var(--spec),var(--shadow-md);
  padding:13px 20px;border-radius:var(--r-xs);font-size:.875rem;z-index:60;
  max-width:88vw;text-align:center;
  transition:transform .46s var(--ease);
}
#toast.on{transform:translate(-50%,0)}

/* ==========================================================
   Оболочка
   ==========================================================
   Компьютер: панель слева стоит всегда, чат справа.
   Телефон: панель — это вкладка, чат наезжает поверх,
   нижнее меню всегда под рукой.
   ========================================================== */
#shell{display:none;position:absolute;inset:0}
#shell.on{display:block}

.pane{position:absolute;inset:0;display:none;flex-direction:column}
.pane.on{display:flex}

/* ---------- Боковая панель ---------- */
#side{
  background:var(--glass);
  backdrop-filter:blur(34px) saturate(190%);
  -webkit-backdrop-filter:blur(34px) saturate(190%);
}
.side-top{
  flex:none;display:flex;align-items:center;gap:10px;
  padding:calc(var(--safe-t) + 14px) 14px 10px;
}
.side-top .brand{flex:1;min-width:0}
.side-act{display:flex;gap:4px;flex:none}

.new-chat{
  flex:none;display:flex;align-items:center;gap:10px;
  margin:2px 12px 10px;padding:13px 15px;border-radius:var(--r-sm);
  background:var(--glass-hi);border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 var(--spec);
  font-size:.9375rem;font-weight:560;letter-spacing:-.008em;
  transition:transform .16s var(--ease),background .2s,border-color .2s;
}
.new-chat svg{width:19px;height:19px;flex:none;color:var(--accent-ink)}
.new-chat:active{transform:scale(.98)}

/* Профиль внизу панели — как в ChatGPT */
.me{
  flex:none;display:flex;align-items:center;gap:11px;
  margin:8px 12px calc(var(--safe-b) + 12px);
  padding:10px 12px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 var(--spec);
  text-align:left;
  transition:transform .16s var(--ease),background .2s;
}
.me:active{transform:scale(.985)}
.me-ava{
  flex:none;width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;font-size:.8125rem;font-weight:660;
  color:var(--brand-ink);
  background:linear-gradient(180deg,var(--brand-2),var(--brand));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.45);
}
.me-tx{flex:1;min-width:0}
.me-tx b{display:block;font-size:.875rem;font-weight:560;
         white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.me-arr{flex:none;color:var(--ink-3)}
.me-arr svg{width:16px;height:16px}

.pane-body{flex:1;overflow-y:auto;display:flex;flex-direction:column}

/* ---------- Аватарка модели ---------- */
.ava{
  flex:none;width:47px;height:47px;border-radius:50%;
  display:grid;place-items:center;font-weight:660;font-size:.9375rem;
  letter-spacing:-.02em;color:var(--model);overflow:hidden;
  background:
    linear-gradient(160deg,color-mix(in srgb,var(--model) 34%,transparent),
                           color-mix(in srgb,var(--model) 10%,transparent)),
    var(--glass);
  border:1px solid color-mix(in srgb,var(--model) 34%,transparent);
  box-shadow:inset 0 1px 0 var(--spec);
}
.ava img{width:100%;height:100%;object-fit:cover;display:block}

/* ---------- Ярлык ---------- */
.tag-chip{
  flex:none;max-width:96px;padding:2px 8px;border-radius:20px;
  font-size:.6875rem;font-weight:600;letter-spacing:.01em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  color:var(--chip);
  background:color-mix(in srgb,var(--chip) 20%,transparent);
  border:1px solid color-mix(in srgb,var(--chip) 40%,transparent);
}
.bar .tag-chip{margin-left:8px;vertical-align:2px}

.swatches{display:grid;grid-template-columns:repeat(8,1fr);gap:8px}
.swatch{
  aspect-ratio:1;border-radius:50%;background:var(--sw);
  border:2px solid transparent;box-shadow:inset 0 1px 0 rgba(255,255,255,.35);
  transition:transform .18s var(--ease-back),border-color .2s;
}
.swatch:active{transform:scale(.88)}
.swatch[aria-pressed="true"]{
  border-color:var(--ink-1);transform:scale(1.12);
}

/* ==========================================================
   Нижнее меню — только телефон
   ========================================================== */
.tabbar{
  position:absolute;left:0;right:0;bottom:0;z-index:14;
  display:grid;grid-template-columns:repeat(4,1fr);align-items:end;
  padding:8px 10px calc(var(--safe-b) + 8px);
  background:var(--glass);
  backdrop-filter:blur(34px) saturate(200%);
  -webkit-backdrop-filter:blur(34px) saturate(200%);
  box-shadow:inset 0 1px 0 var(--spec);
  transform:translateY(0);
  transition:transform .42s var(--ease);
}
/* Пока открыт чат, меню уезжает вниз — экран отдан переписке */
.tabbar.away{transform:translateY(115%)}

.tab{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:6px 2px;color:var(--ink-3);border-radius:14px;
  transition:color .24s,transform .18s var(--ease);
}
.tab svg{width:23px;height:23px;transition:transform .3s var(--ease-back)}
.tab span{font-size:.625rem;font-weight:560;letter-spacing:.01em}
.tab:active{transform:scale(.9)}
.tab[aria-selected="true"]{color:var(--accent-ink)}
.tab[aria-selected="true"] svg{transform:translateY(-1px) scale(1.08)}

/* Плюс приподнят и подсвечен — главное действие экрана */
.tab-add{
  justify-self:center;width:50px;height:50px;border-radius:50%;
  display:grid;place-items:center;margin-bottom:2px;
  background:linear-gradient(180deg,var(--brand-2),var(--brand));
  color:var(--brand-ink);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 6px 18px rgba(0,0,0,.28);
  transition:transform .22s var(--ease-back);
}
.tab-add:active{transform:scale(.86) rotate(-90deg)}
.tab-add svg{width:24px;height:24px}

/* Список не должен упираться в меню */
#side .list{padding-bottom:calc(var(--safe-b) + 92px)}

/* ==========================================================
   Компьютер
   ========================================================== */
@media (min-width:900px) and (pointer:fine){
  #shell.on{display:grid;grid-template-columns:312px 1fr}
  #side{position:relative;display:flex!important;
        box-shadow:inset -1px 0 0 var(--glass-line)}
  #side .list{padding-bottom:8px}
  #support{display:none!important}
  .tabbar{display:none}
  #chat{position:relative;transform:none!important;z-index:1;background:transparent}
  .bar .back{display:none}
  .thread{padding-inline:24px;align-items:center}
  .thread>*{width:100%;max-width:764px}
  .composer{padding-inline:24px;justify-content:center}
  .composer>*{max-width:764px}
  .composer textarea{max-width:708px}
  .row:hover{background:var(--glass)}
  .new-chat:hover{background:var(--glass);border-color:var(--brand)}
  .me:hover{background:var(--glass-hi)}
  .icon-btn:hover{background:var(--glass-hi);color:var(--ink-1)}
  .menu button:hover{background:var(--glass-hi)}
  .model:hover{border-color:color-mix(in srgb,var(--model) 50%,transparent)}
  .swatch:hover{transform:scale(1.1)}
  .msg{max-width:72%}
  .msg.has-shot{max-width:420px}
  #chat.blank .thread,#chat.blank .composer,#chat.blank .bar{display:none}
  #chat.blank{align-items:center;justify-content:center}
  #chat.blank::after{content:'Выберите чат или создайте новый';
                     color:var(--ink-3);font-size:.9375rem}
}

/* Планшет и узкий десктоп — как телефон, но шире поля */
@media (max-width:899px){
  #side .list{padding-inline:12px}
}

/* ==========================================================
   Доступность
   ========================================================== */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms!important;animation-iteration-count:1!important;
    transition-duration:.01ms!important;
  }
  .btn:active,.fab:active,.send:active,.icon-btn:active,
  .model:active,.row:active,.row.held{transform:none}
  .glyph .arc{stroke-dashoffset:0}
  .glyph .core{transform:scale(1)}
  body::before{animation:none}
}
@media (prefers-reduced-transparency:reduce){
  .glass,.bar,.composer,.sheet,.msg,.steps li,.field input,#toast{
    backdrop-filter:none;-webkit-backdrop-filter:none;
    background:var(--bg);
  }
  body::before{opacity:.25}
  .scrim{backdrop-filter:none;-webkit-backdrop-filter:none}
}
@media (prefers-contrast:more){
  html[data-theme="dark"]{--glass-line:rgba(255,255,255,.4);--ink-2:#C4CBD4}
  html[data-theme="light"]{--glass-line:rgba(0,0,0,.3);--ink-2:#3A414B}
  body::before{opacity:.35}
}