/* Спільні стилі сторінок логіну та реєстрації (преміальний dark split-screen) */
:root{
  --bg:#080a10; --bg2:#0c0f17;
  --ink:#eef1f8; --muted:#98a1b6; --faint:#5c6478;
  --line:rgba(255,255,255,.09);
  --card:rgba(20,23,33,.62);
  --primary:#6f6bff; --primary2:#9a7bff; --accent:#38e6c8;
  --radius:18px;
  --sans:'Plus Jakarta Sans',-apple-system,Segoe UI,Roboto,sans-serif;
  --display:'Bricolage Grotesque',var(--sans);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--bg);overflow-x:hidden;-webkit-font-smoothing:antialiased}

/* ── Aurora background ── */
.bg{position:fixed;inset:0;z-index:0;overflow:hidden;background:
  radial-gradient(1200px 800px at 15% 10%, #10142400 0%, transparent 60%),
  linear-gradient(160deg,#080a10 0%,#0b0e18 55%,#090b12 100%);}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.55;mix-blend-mode:screen;will-change:transform}
.b1{width:46vw;height:46vw;left:-8vw;top:-10vw;background:radial-gradient(circle at 30% 30%,#5b57e0,#5b57e000 68%);animation:drift1 26s ease-in-out infinite}
.b2{width:40vw;height:40vw;left:18vw;top:35vh;background:radial-gradient(circle at 50% 50%,#22d3ee,#22d3ee00 66%);opacity:.4;animation:drift2 32s ease-in-out infinite}
.b3{width:38vw;height:38vw;right:-6vw;bottom:-10vw;background:radial-gradient(circle at 50% 50%,#8b5cf6,#8b5cf600 66%);animation:drift3 30s ease-in-out infinite}
.b4{width:26vw;height:26vw;right:12vw;top:-6vw;background:radial-gradient(circle at 50% 50%,#10b981,#10b98100 68%);opacity:.28;animation:drift2 38s ease-in-out infinite reverse}
@keyframes drift1{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(6vw,4vh) scale(1.12)}}
@keyframes drift2{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-5vw,-3vh) scale(1.1)}}
@keyframes drift3{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-4vw,-5vh) scale(1.15)}}
.grain{position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.06;mix-blend-mode:overlay;
  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='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");}
.grid{position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.4;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;-webkit-mask-image:radial-gradient(circle at 30% 40%,#000 0%,transparent 62%);mask-image:radial-gradient(circle at 30% 40%,#000 0%,transparent 62%);}

/* ── Layout ── */
.wrap{position:relative;z-index:2;min-height:100vh;display:grid;grid-template-columns:1.15fr .85fr}
.brand{position:relative;display:flex;flex-direction:column;justify-content:center;padding:6vh 6vw;overflow:hidden}
.panel{display:flex;align-items:center;justify-content:center;padding:5vh 5vw;
  background:linear-gradient(180deg,rgba(10,12,18,.2),rgba(10,12,18,.5));
  border-left:1px solid var(--line);backdrop-filter:blur(2px)}

/* ── Brand side ── */
.logo{display:flex;align-items:center;gap:12px;margin-bottom:auto}
.logo .mark{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),var(--primary2));box-shadow:0 8px 30px -8px var(--primary)}
.logo .name{font-family:var(--display);font-weight:700;font-size:1.12rem;letter-spacing:-.01em}
.logo .name b{color:var(--accent);font-weight:700}
.brand-mid{margin:auto 0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.72rem;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);padding:6px 12px;border:1px solid var(--line);border-radius:99px;background:rgba(255,255,255,.02)}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
h1.hero{font-family:var(--display);font-weight:700;font-size:clamp(2.3rem,4.4vw,4rem);line-height:1.02;
  letter-spacing:-.025em;margin:22px 0 16px;max-width:12ch;
  background:linear-gradient(180deg,#fff,#c8ccdb);-webkit-background-clip:text;background-clip:text;color:transparent}
.sub{font-size:clamp(1rem,1.3vw,1.18rem);color:var(--muted);max-width:44ch;line-height:1.6;margin:0}
.features{list-style:none;padding:0;margin:34px 0 0;display:grid;gap:14px;max-width:30rem}
.features li{display:flex;align-items:center;gap:14px;font-weight:500;color:#d7dbe8}
.features .ic{flex:none;width:40px;height:40px;border-radius:11px;display:grid;place-items:center;border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--accent)}
.features .ic svg{width:19px;height:19px}
.brand-foot{margin-top:auto;padding-top:34px;color:var(--faint);font-size:.86rem;display:flex;align-items:center;gap:10px}
.brand-foot .pill{color:var(--muted)}

/* ── Form side ── */
.card{width:100%;max-width:400px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:38px 34px;backdrop-filter:blur(22px) saturate(140%);
  box-shadow:0 30px 80px -30px rgba(0,0,0,.7),inset 0 1px 0 rgba(255,255,255,.05)}
.card h2{font-family:var(--display);font-weight:700;font-size:1.7rem;letter-spacing:-.02em;margin:0 0 6px}
.card .lead{color:var(--muted);margin:0 0 26px;font-size:.95rem}
.field{margin-bottom:16px}
.field label{display:block;font-size:.78rem;font-weight:600;color:var(--muted);margin:0 0 7px;letter-spacing:.01em}
.inp{position:relative;display:flex;align-items:center}
.inp svg{position:absolute;left:14px;width:18px;height:18px;color:var(--faint);pointer-events:none;transition:color .2s}
.inp input{width:100%;padding:14px 14px 14px 44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--ink);font-family:var(--sans);font-size:.98rem;transition:border-color .2s,box-shadow .2s,background .2s}
.inp input::placeholder{color:var(--faint)}
.inp input:focus{outline:none;border-color:var(--primary);background:rgba(111,107,255,.06);box-shadow:0 0 0 4px rgba(111,107,255,.14)}
.inp input:focus ~ svg{color:var(--primary)}
.inp .toggle{position:absolute;right:12px;left:auto;width:auto;height:auto;background:none;border:none;color:var(--faint);font-size:.74rem;font-weight:600;cursor:pointer;padding:4px 6px;pointer-events:auto;transition:color .2s}
.inp .toggle:hover{color:var(--muted)}
.submit{width:100%;margin-top:8px;padding:14px;border:none;border-radius:12px;cursor:pointer;
  font-family:var(--sans);font-weight:700;font-size:1rem;color:#fff;letter-spacing:.01em;
  background:linear-gradient(120deg,var(--primary),var(--primary2));box-shadow:0 12px 30px -10px var(--primary);transition:transform .12s,box-shadow .2s,filter .2s}
.submit:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 16px 40px -12px var(--primary)}
.submit:active{transform:translateY(0)}
.submit .arr{display:inline-block;margin-left:6px;transition:transform .2s}
.submit:hover .arr{transform:translateX(3px)}
.err{display:flex;align-items:center;gap:9px;background:rgba(255,86,86,.1);border:1px solid rgba(255,86,86,.28);color:#ffb4b4;padding:11px 14px;border-radius:11px;font-size:.88rem;margin-bottom:18px}
.err svg{width:17px;height:17px;flex:none}
.reg{margin:24px 0 0;text-align:center;color:var(--muted);font-size:.92rem}
.reg a{color:var(--ink);font-weight:600;text-decoration:none;border-bottom:1.5px solid var(--primary);padding-bottom:1px}
.reg a:hover{color:var(--accent);border-color:var(--accent)}

/* ── Language switch ── */
.lang{position:fixed;top:22px;right:26px;z-index:5;display:flex;gap:2px;padding:4px;border:1px solid var(--line);border-radius:99px;background:rgba(12,15,23,.6);backdrop-filter:blur(10px)}
.lang a{font-size:.72rem;font-weight:600;color:var(--muted);text-decoration:none;padding:5px 10px;border-radius:99px;transition:.2s}
.lang a:hover{color:var(--ink)}
.lang a.on{background:linear-gradient(120deg,var(--primary),var(--primary2));color:#fff}

/* ── Entrance animation ── */
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@keyframes pop{from{opacity:0;transform:translateY(14px) scale(.985)}to{opacity:1;transform:none}}
.anim{opacity:0;animation:rise .7s cubic-bezier(.22,1,.36,1) forwards}
.card{opacity:0;animation:pop .8s cubic-bezier(.22,1,.36,1) .15s forwards}
.d1{animation-delay:.05s}.d2{animation-delay:.14s}.d3{animation-delay:.24s}
.d4{animation-delay:.34s}.d5{animation-delay:.42s}.d6{animation-delay:.5s}.d7{animation-delay:.58s}
@media (prefers-reduced-motion:reduce){.anim,.card{animation:none;opacity:1}.blob{animation:none}}

/* ── Responsive ── */
@media (max-width:900px){
  .wrap{grid-template-columns:1fr}
  .brand{padding:64px 30px 20px;min-height:auto}
  .brand-mid{margin:26px 0 6px}
  h1.hero{font-size:clamp(2rem,8vw,2.7rem);max-width:none}
  .features{display:none}
  .brand-foot{padding-top:22px}
  .panel{border-left:none;border-top:1px solid var(--line);padding:24px 22px 60px}
  .card{max-width:440px;padding:30px 24px}
  .grid{opacity:.25}
}
@media (max-width:560px){.lang{top:14px;right:14px}.brand{padding:58px 22px 14px}}