/* DisChat login page */
:root{
  --bg:#060a1c;--panel:#0b1030;--card:#10173d;--line:#1f2860;--tx:#eef1ff;--mut:#8a93c2;
  --a1:#8b3dff;--a2:#2b7bff;--grad:linear-gradient(135deg,#8b3dff,#2b7bff);
  --glass:#0b1030c7;--red:#ff6b8a;--ease:cubic-bezier(.2,.8,.2,1);
}
html.light{
  --bg:#eef1fb;--panel:#ffffff;--card:#f3f5ff;--line:#dde2f5;--tx:#141a3a;--mut:#6a72a0;--glass:#ffffffcc;--red:#d6264f;
}
*{box-sizing:border-box;margin:0}
html{-webkit-text-size-adjust:100%}
body.login{
  min-height:100vh;min-height:100dvh;position:relative;overflow-x:hidden;
  font:15px/1.5 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);color:var(--tx);-webkit-font-smoothing:antialiased;
  -webkit-tap-highlight-color:transparent;
}
svg{fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- animated background ---------- */
.bg{position:fixed;inset:0;overflow:hidden;z-index:0;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55;will-change:transform}
.b1{width:48vmax;height:48vmax;left:-12vmax;top:-14vmax;background:#6d2bff;animation:f1 18s ease-in-out infinite alternate}
.b2{width:44vmax;height:44vmax;right:-12vmax;bottom:-16vmax;background:#1f7bff;animation:f2 22s ease-in-out infinite alternate}
.b3{width:26vmax;height:26vmax;right:22%;top:8%;background:#be185d;opacity:.22;animation:f3 26s ease-in-out infinite alternate}
html.light .blob{opacity:.28}
.grid{position:absolute;inset:0;
  background-image:linear-gradient(#ffffff0b 1px,transparent 1px),linear-gradient(90deg,#ffffff0b 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(70% 60% at 50% 40%,#000 30%,transparent 100%);
          mask-image:radial-gradient(70% 60% at 50% 40%,#000 30%,transparent 100%)}
html.light .grid{background-image:linear-gradient(#141a3a0a 1px,transparent 1px),linear-gradient(90deg,#141a3a0a 1px,transparent 1px)}
@keyframes f1{to{transform:translate(8vmax,6vmax) scale(1.1)}}
@keyframes f2{to{transform:translate(-7vmax,-5vmax) scale(1.12)}}
@keyframes f3{to{transform:translate(-6vmax,8vmax) scale(.9)}}

/* ---------- layout ---------- */
.shell{
  position:relative;z-index:1;max-width:1120px;margin:0 auto;min-height:100vh;min-height:100dvh;
  padding:clamp(16px,4vw,40px);padding-bottom:max(clamp(16px,4vw,40px),env(safe-area-inset-bottom));
  display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:clamp(28px,6vw,72px);
}

/* ---------- hero ---------- */
.hero .brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:24px;letter-spacing:-.03em;margin-bottom:34px}
.hero .brand img{border-radius:14px;box-shadow:0 8px 24px #8b3dff55}
.hero h2{font-size:clamp(34px,4.6vw,54px);line-height:1.05;font-weight:800;letter-spacing:-.04em}
.hero h2 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero>p{margin-top:16px;max-width:440px;color:var(--mut);font-size:17px}

.demo{margin:34px 0 28px;display:flex;flex-direction:column;gap:10px;max-width:400px}
.bub{max-width:88%;padding:10px 14px;border-radius:18px;font-size:14px;line-height:1.4;box-shadow:0 6px 20px #0003;animation:bob 6s ease-in-out infinite}
.bub b{display:block;font-size:11.5px;font-weight:700;margin-bottom:2px;opacity:.75}
.bub.them{background:var(--glass);border:1px solid #ffffff18;border-bottom-left-radius:5px;align-self:flex-start;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}
.bub.me{background:linear-gradient(135deg,#6d2bff,#4a4df0);color:#fff;border-bottom-right-radius:5px;align-self:flex-end;animation-delay:-2s}
.bub.ai{background:linear-gradient(135deg,#8b3dff22,#2b7bff22);border:1px solid #8b3dff55;border-bottom-left-radius:5px;align-self:flex-start;animation-delay:-4s}
.bub.ai b{color:#b99aff}
html.light .bub.ai b{color:#6d2bff}
html.light .bub.them{border-color:var(--line)}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}

.chips{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:10px}
.chips li{display:flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;font-size:13.5px;font-weight:600;
  background:var(--glass);border:1px solid #ffffff18;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
html.light .chips li{border-color:var(--line)}
.chips svg{width:16px;height:16px;color:#a982ff}
html.light .chips svg{color:#6d2bff}

/* ---------- card ---------- */
.card{
  width:100%;max-width:430px;justify-self:end;padding:clamp(24px,4vw,38px);
  background:var(--glass);border:1px solid #ffffff1f;border-radius:30px;
  -webkit-backdrop-filter:blur(26px) saturate(140%);backdrop-filter:blur(26px) saturate(140%);
  box-shadow:0 30px 80px #0009,inset 0 1px 0 #ffffff14;
  animation:rise .6s var(--ease) both;
}
html.light .card{border-color:var(--line);box-shadow:0 24px 70px #8b3dff26}
@keyframes rise{from{opacity:0;transform:translateY(20px) scale(.98)}to{opacity:1;transform:none}}

.logo-wrap{position:relative;width:72px;height:72px;margin:0 0 20px}
.logo-wrap::before{content:"";position:absolute;inset:-10px;border-radius:30px;background:var(--grad);filter:blur(22px);opacity:.55;z-index:0}
.logo{position:relative;z-index:1;display:block;width:72px;height:72px;border-radius:20px;box-shadow:0 10px 30px #0006;animation:pop .7s var(--ease) both .1s}
@keyframes pop{from{transform:scale(.6) rotate(-8deg);opacity:0}to{transform:none;opacity:1}}

.card h1{font-size:30px;line-height:1.15;font-weight:800;letter-spacing:-.035em}
.sub{margin:6px 0 22px;color:var(--mut)}

/* error */
.alert{display:flex;gap:10px;align-items:flex-start;margin-bottom:18px;padding:12px 14px;border-radius:14px;font-size:14px;
  background:#ff3d6b1f;border:1px solid #ff3d6b55;color:var(--red);animation:shake .45s}
.alert svg{width:18px;height:18px;flex:none;margin-top:1px}
@keyframes shake{20%,60%{transform:translateX(-6px)}40%,80%{transform:translateX(6px)}}

/* fields */
.field{display:block;margin-bottom:16px}
.lbl{display:block;margin-bottom:7px;font-size:13px;font-weight:600;color:var(--mut)}
.ctl{position:relative;display:block}
.ctl .ico{position:absolute;left:15px;top:50%;width:19px;height:19px;transform:translateY(-50%);color:var(--mut);pointer-events:none;transition:color .2s}
.ctl input{
  width:100%;height:52px;padding:0 48px 0 46px;border-radius:15px;font:inherit;font-size:16px;color:var(--tx);
  background:var(--card);border:1.5px solid var(--line);outline:none;transition:border-color .2s,box-shadow .2s,background .2s;
}
.ctl input::placeholder{color:var(--mut);opacity:.6}
.ctl input:focus{border-color:var(--a1);box-shadow:0 0 0 4px #8b3dff2b}
.ctl:focus-within .ico{color:var(--a1)}
.ctl input:-webkit-autofill{-webkit-text-fill-color:var(--tx);-webkit-box-shadow:0 0 0 40px var(--card) inset}

.eye{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:40px;height:40px;display:grid;place-items:center;
  background:none;border:0;border-radius:12px;color:var(--mut);cursor:pointer;transition:color .2s,background .2s}
.eye:hover{color:var(--tx);background:#ffffff12}
.eye svg{width:19px;height:19px}
.eye .off{display:none}.eye.shown .off{display:block}.eye.shown .on{display:none}

/* buttons */
.go{
  position:relative;width:100%;height:54px;margin-top:6px;border:0;border-radius:16px;cursor:pointer;
  font:inherit;font-size:16px;font-weight:700;color:#fff;background:var(--grad);
  box-shadow:0 12px 30px #8b3dff66;transition:transform .2s var(--ease),box-shadow .2s,filter .2s;
}
.go:hover{transform:translateY(-2px);box-shadow:0 16px 38px #8b3dff88;filter:brightness(1.06)}
.go:active{transform:translateY(0)}
.go:disabled{cursor:progress}
.go .spin{display:none;position:absolute;left:50%;top:50%;width:22px;height:22px;margin:-11px 0 0 -11px;border-radius:50%;
  border:3px solid #ffffff55;border-top-color:#fff;animation:sp .7s linear infinite}
.go.busy .t{opacity:0}.go.busy .spin{display:block}
@keyframes sp{to{transform:rotate(360deg)}}

.hint{margin-top:14px;text-align:center;font-size:13px;color:var(--mut)}

.or{display:flex;align-items:center;gap:12px;margin:22px 0 14px;color:var(--mut);font-size:13px}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}
.create{display:grid;place-items:center;height:50px;border-radius:15px;text-decoration:none;font-weight:700;color:var(--tx);
  border:1.5px solid var(--line);background:transparent;transition:border-color .2s,background .2s,transform .2s var(--ease)}
.create:hover{border-color:var(--a1);background:#8b3dff14;transform:translateY(-1px)}

:focus-visible{outline:2px solid var(--a2);outline-offset:2px}
.ctl input:focus-visible{outline:none}

/* ---------- small screens ---------- */
@media (max-width:899px){
  .shell{grid-template-columns:1fr;align-content:center;justify-items:center}
  .hero{display:none}
  .card{justify-self:center}
}
@media (max-width:420px){
  .card{border-radius:26px}
  .card h1{font-size:27px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
}

/* ---------- register: profile picture picker ---------- */
.pick{display:flex;align-items:center;gap:14px;margin:2px 0 16px;padding:10px 12px;border-radius:15px;cursor:pointer;
  background:var(--card);border:1.5px dashed var(--line);transition:border-color .2s,background .2s}
.pick:hover{border-color:var(--a1);background:#8b3dff12}
.pick .pv{flex:none;width:52px;height:52px;border-radius:50%;display:grid;place-items:center;color:var(--mut);
  background:var(--panel) center/cover no-repeat;border:1.5px solid var(--line)}
.pick .pv svg{width:22px;height:22px}
.pick .pv.has svg{display:none}
.pick .pt{display:flex;flex-direction:column;min-width:0}
.pick .pt b{font-size:14px}
.pick .pt small{color:var(--mut);font-size:12.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}