/* Tela de login: vidro azul escuro, trilhas de circuito neon e painel diagonal deslizante */
@font-face{font-family:Poppins;font-weight:400;font-style:normal;font-display:swap;src:url(/fonts/poppins-400.woff2) format('woff2')}
@font-face{font-family:Poppins;font-weight:500;font-style:normal;font-display:swap;src:url(/fonts/poppins-500.woff2) format('woff2')}
@font-face{font-family:Poppins;font-weight:600;font-style:normal;font-display:swap;src:url(/fonts/poppins-600.woff2) format('woff2')}
@font-face{font-family:Poppins;font-weight:700;font-style:normal;font-display:swap;src:url(/fonts/poppins-700.woff2) format('woff2')}
@font-face{font-family:Poppins;font-weight:800;font-style:normal;font-display:swap;src:url(/fonts/poppins-800.woff2) format('woff2')}

:root{
  --blue:#3d7bff;--blue-2:#2457e6;--blue-3:#1639a8;--ink:#fff;
  --card-w:min(760px,92vw);
  --side:max(0px,calc((100vw - var(--card-w)) / 2 - 40px));
  color-scheme:dark;
}
*{box-sizing:border-box}
body{margin:0;background:#03050e;color:var(--ink);font-family:Poppins,"Segoe UI",system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.stage{min-height:100vh;display:grid;place-items:center;padding:56px 0;overflow:hidden;
  background:
    radial-gradient(95% 55% at 50% 112%,rgba(24,64,200,.55),transparent 66%),
    radial-gradient(60% 38% at 50% -8%,rgba(20,50,160,.3),transparent 72%),
    #03050e}
.rig{position:relative;width:var(--card-w)}

/* ---------- trilhas de circuito ---------- */
.rail,.trace{position:absolute;background:rgba(61,123,255,.5);box-shadow:0 0 10px rgba(61,123,255,.45);overflow:hidden;pointer-events:none}
.rail{width:2px;top:-130px;bottom:-190px;background:linear-gradient(180deg,transparent,rgba(61,123,255,.55) 14%,rgba(61,123,255,.55) 86%,transparent)}
.rail-l{right:calc(100% + var(--side))}.rail-r{left:calc(100% + var(--side))}
.trace{height:2px;width:var(--side)}
.t-l1{right:100%;top:23%}.t-l2{right:100%;top:81%}.t-r1{left:100%;top:23%}.t-r2{left:100%;top:71%}
.trace i,.rail i{position:absolute;border-radius:6px;background:radial-gradient(circle,#fff 0,#8fb4ff 40%,transparent 72%);filter:drop-shadow(0 0 7px var(--blue))}
.trace i{top:-2px;width:34px;height:6px}
.rail i{left:-2px;width:6px;height:34px;animation:runV 6s linear infinite}
.t-l1 i,.t-l2 i{animation:runR 3.6s linear infinite}.t-l2 i{animation-delay:-1.4s}
.t-r1 i,.t-r2 i{animation:runL 3.2s linear infinite}.t-r2 i{animation-delay:-1.1s}
.rail-r i{animation-delay:-3s;animation-direction:reverse}
@keyframes runR{0%{left:-40px;opacity:0}12%{opacity:1}88%{opacity:1}100%{left:100%;opacity:0}}
@keyframes runL{0%{left:100%;opacity:0}12%{opacity:1}88%{opacity:1}100%{left:-40px;opacity:0}}
@keyframes runV{0%{top:-40px;opacity:0}10%{opacity:1}90%{opacity:1}100%{top:100%;opacity:0}}
.node{position:absolute;width:10px;height:10px;border-radius:50%;background:#050b1f;border:2px solid var(--blue);box-shadow:0 0 12px var(--blue);animation:pulse 2.8s ease-in-out infinite;pointer-events:none}
.n-l1{right:calc(100% + var(--side) - 5px);top:calc(23% - 4px)}.n-l2{right:calc(100% + var(--side) - 5px);top:calc(81% - 4px)}
.n-r1{left:calc(100% + var(--side) - 5px);top:calc(23% - 4px)}.n-r2{left:calc(100% + var(--side) - 5px);top:calc(71% - 4px)}
.n-l2,.n-r2{animation-delay:-1.2s}
@keyframes pulse{0%,100%{box-shadow:0 0 8px var(--blue)}50%{box-shadow:0 0 18px 3px var(--blue)}}

/* ---------- cartão ---------- */
.card{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;min-height:430px;border-radius:18px;overflow:hidden;
  background:linear-gradient(135deg,rgba(16,38,110,.58),rgba(4,9,30,.84));
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border:1px solid rgba(100,150,255,.24);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07),0 34px 90px rgba(0,0,0,.65),0 0 70px rgba(40,90,230,.22)}
.card::before{content:"";position:absolute;left:8%;right:8%;top:0;height:1px;z-index:3;background:linear-gradient(90deg,transparent,rgba(120,165,255,.85),transparent)}

.pane{position:relative;z-index:2;display:flex;flex-direction:column;justify-content:center;padding:34px clamp(18px,5.4%,42px);
  opacity:0;visibility:hidden;pointer-events:none;filter:blur(8px);
  transition:opacity .45s ease,transform .6s cubic-bezier(.2,.8,.2,1),filter .45s ease,visibility 0s .45s}
.pane-login{grid-column:1;transform:translateX(-34px)}
.pane-register{grid-column:2;transform:translateX(34px)}
.card[data-mode=login] .pane-login,.card[data-mode=register] .pane-register{opacity:1;visibility:visible;pointer-events:auto;filter:none;transform:none;transition-delay:.18s,.18s,.18s,0s}

.ttl{margin:0 0 22px;text-align:center;font-size:1.9rem;font-weight:700;letter-spacing:-.01em}
.form{display:flex;flex-direction:column;gap:14px}

/* ---------- campos ---------- */
.field{position:relative}
.field .ico{position:absolute;left:15px;top:50%;width:19px;height:19px;margin-top:-9.5px;fill:none;stroke:rgba(255,255,255,.55);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;pointer-events:none;transition:stroke .2s}
.field input{width:100%;height:50px;padding:0 46px 0 46px;font:500 .95rem Poppins,"Segoe UI",system-ui,sans-serif;color:#fff;
  background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.13);border-radius:9px;outline:none;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 4px 14px rgba(0,0,0,.25);transition:border-color .2s,box-shadow .2s,background .2s}
.field input::placeholder{color:rgba(255,255,255,.46);font-weight:400}
.field input:hover{background:rgba(255,255,255,.075)}
.field input:focus{border-color:#4f8bff;background:rgba(255,255,255,.08);box-shadow:0 0 0 1px #4f8bff,0 0 18px rgba(79,139,255,.45)}
.field:focus-within .ico{stroke:#7fa8ff}
.field input:-webkit-autofill{-webkit-text-fill-color:#fff;caret-color:#fff;box-shadow:0 0 0 100px #0b1636 inset;border-color:rgba(255,255,255,.2)}
.eye{position:absolute;right:6px;top:50%;width:38px;height:38px;margin-top:-19px;display:grid;place-items:center;background:transparent;border:0;border-radius:8px;color:rgba(255,255,255,.55);cursor:pointer}
.eye:hover,.eye:focus-visible{color:#fff;background:rgba(255,255,255,.08);outline:none}
.eye svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ---------- botão ---------- */
.cta{position:relative;height:50px;margin-top:6px;border:0;border-radius:999px;cursor:pointer;color:#fff;font:600 1rem Poppins,"Segoe UI",system-ui,sans-serif;
  background:linear-gradient(90deg,#4a86ff,var(--blue-2) 62%,var(--blue-3));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.38),0 10px 30px rgba(50,110,255,.42);transition:transform .2s,box-shadow .2s,filter .2s}
.cta:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 14px 38px rgba(50,110,255,.55)}
.cta:active{transform:translateY(1px)}
.cta:focus-visible{outline:2px solid #fff;outline-offset:3px}
.cta:disabled{cursor:progress;filter:saturate(.7) brightness(.9)}
.cta .spin{position:absolute;left:50%;top:50%;width:20px;height:20px;margin:-10px 0 0 -10px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;opacity:0;animation:spin .8s linear infinite}
.cta.loading .cta-t{opacity:0}.cta.loading .spin{opacity:1}
@keyframes spin{to{transform:rotate(360deg)}}

.msg{min-height:1.4em;margin:0;text-align:center;font-size:.84rem;color:#ff8896}
.alt{margin:0;text-align:center;font-size:.82rem;color:rgba(255,255,255,.88)}
.alt a{color:#6aa0ff;font-weight:600;text-decoration:none}
.alt a:hover,.alt a:focus-visible{text-decoration:underline;outline:none}
.alt.dim{color:rgba(255,255,255,.5);font-size:.76rem}
.shake{animation:shake .42s}
@keyframes shake{20%,60%{transform:translateX(-7px)}40%,80%{transform:translateX(7px)}}

/* ---------- painel diagonal ---------- */
.info{position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(135deg,rgba(255,255,255,.085),rgba(255,255,255,.025));
  transition:clip-path .75s cubic-bezier(.65,0,.2,1)}
.card[data-mode=login] .info{clip-path:polygon(57% 0,100% 0,100% 100%,43% 100%)}
.card[data-mode=register] .info{clip-path:polygon(0 0,43% 0,57% 100%,0 100%)}
.info-box{position:absolute;top:0;bottom:0;width:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:30px clamp(16px,5%,40px);
  opacity:0;filter:blur(8px);transition:opacity .45s ease,transform .6s cubic-bezier(.2,.8,.2,1),filter .45s ease}
.info-box[data-for=login]{right:0;transform:translateX(34px)}
.info-box[data-for=register]{left:0;transform:translateX(-34px)}
.card[data-mode=login] .info-box[data-for=login],.card[data-mode=register] .info-box[data-for=register]{opacity:1;filter:none;transform:none;transition-delay:.2s}
.brand{margin:0 0 14px;font-size:.72rem;font-weight:600;letter-spacing:.32em;text-transform:uppercase;color:#7fa8ff}
.info h2{margin:0 0 12px;font-size:1.9rem;font-weight:800;line-height:1.22;letter-spacing:.015em;text-transform:uppercase}
.info p:not(.brand){margin:0;max-width:27ch;font-size:.93rem;line-height:1.55;color:rgba(255,255,255,.86)}

/* ---------- celular: empilha e dispensa a diagonal ---------- */
@media (max-width:900px){.rail,.trace,.node{display:none}}
@media (max-width:760px){
  .stage{padding:28px 0;align-items:start}
  .card{grid-template-columns:1fr;min-height:0}
  .info{position:relative;inset:auto;order:-1;clip-path:none!important;background:linear-gradient(180deg,rgba(255,255,255,.07),transparent);transition:none;pointer-events:auto}
  .info-box{position:relative;width:auto;display:none;transform:none!important;filter:none;opacity:1;padding:26px 22px 10px}
  .card[data-mode=login] .info-box[data-for=login],.card[data-mode=register] .info-box[data-for=register]{display:flex}
  .info h2{font-size:1.35rem}.info p:not(.brand){font-size:.86rem}
  .pane{grid-column:1!important;display:none;padding:22px 22px 30px;transform:none!important;filter:none}
  .card[data-mode=login] .pane-login,.card[data-mode=register] .pane-register{display:flex;animation:fadeIn .45s ease both}
  .ttl{font-size:1.5rem;margin-bottom:16px}
}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .trace i,.rail i{display:none}
}