/* ============================================================
   Login Admin — Painel IPTV
   Glass card moderno, gradiente animado, floating labels,
   ícones Lucide inline. Sem lembrar/esqueci/registrar.
============================================================ */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:           #07071a;
  --primary:      #8b5cf6;
  --primary-2:    #06b6d4;
  --accent:       #c4b5fd;
  --text:         #f5f5ff;
  --muted:        #9ca3af;
  --danger:       #f43f5e;
  --line:         rgba(255,255,255,.18);
  --line-strong:  rgba(255,255,255,.45);
  --glass:        rgba(15,15,35,.55);
  --bg-image:     none;
}

html,body{height:100%;font-family:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;color:var(--text);background:var(--bg)}
body{overflow:hidden;-webkit-font-smoothing:antialiased;position:relative}

/* --- Fundo --- */
.bg-layer{
  position:fixed;inset:0;z-index:0;
  background-size:cover;background-position:center;background-repeat:no-repeat;
}
.bg-layer.bg-gradient{
  background-image:
    radial-gradient(900px 600px at 18% 12%, rgba(139,92,246,.35), transparent 60%),
    radial-gradient(800px 600px at 82% 88%, rgba(6,182,212,.28), transparent 60%),
    radial-gradient(700px 500px at 50% 50%, rgba(217,70,239,.18), transparent 70%),
    linear-gradient(135deg,#0a0a1f 0%,#0f0f2e 50%,#0a0a1f 100%);
  background-size:200% 200%;
  animation:bgShift 18s ease-in-out infinite;
}
.bg-overlay{
  position:fixed;inset:0;z-index:1;pointer-events:none;
  background:
    linear-gradient(180deg, rgba(7,7,26,.18), rgba(7,7,26,.55)),
    radial-gradient(ellipse at center, transparent 0%, rgba(7,7,26,.34) 72%, rgba(7,7,26,.72) 100%);
}
@keyframes bgShift{
  0%,100%{background-position:0% 50%, 100% 50%, 50% 50%, 50% 50%}
  50%   {background-position:100% 50%, 0% 50%, 50% 50%, 50% 50%}
}

/* --- Stage --- */
.stage{
  position:relative;z-index:2;
  min-height:100vh;display:grid;place-items:center;padding:24px;
}

/* --- Card --- */
.login-card{
  position:relative;width:100%;max-width:420px;
  padding:42px 36px 28px;
  border:1px solid var(--line);
  border-radius:24px;
  background:var(--glass);
  backdrop-filter:blur(22px) saturate(140%);
  -webkit-backdrop-filter:blur(22px) saturate(140%);
  box-shadow:
    0 30px 80px -20px rgba(0,0,0,.6),
    0 0 0 1px rgba(255,255,255,.03) inset,
    0 1px 0 rgba(255,255,255,.08) inset;
  animation:cardIn .55s cubic-bezier(.2,.8,.2,1) both;
}
@keyframes cardIn{from{opacity:0;transform:translateY(14px) scale(.985)}to{opacity:1;transform:none}}

/* borda animada sutil */
.login-card::before{
  content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;
  background:linear-gradient(135deg, rgba(139,92,246,.5), rgba(6,182,212,.4) 50%, rgba(139,92,246,.5));
  -webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  opacity:.55;pointer-events:none;
}

.login-card.shake{animation:cardIn .55s cubic-bezier(.2,.8,.2,1) both, shake .45s ease}
@keyframes shake{
  10%,90%{transform:translateX(-2px)}
  20%,80%{transform:translateX(4px)}
  30%,50%,70%{transform:translateX(-7px)}
  40%,60%{transform:translateX(7px)}
}

/* --- Brand head --- */
.brand-head{text-align:center;margin-bottom:30px}
.brand-logo{
  width:200px!important;height:auto!important;max-width:none!important;max-height:none!important;
  object-fit:contain;margin:0 auto 24px;display:block;
  filter:drop-shadow(0 12px 30px rgba(139,92,246,.55));
}
.brand-mark{
  width:64px;height:64px;border-radius:18px;margin:0 auto 14px;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:0 10px 30px -10px rgba(139,92,246,.7);
}
/* --- Campo --- */
.field{position:relative;margin:22px 0}
.field input{
  width:100%;height:52px;
  background:transparent;border:none;outline:none;
  color:var(--text);font-size:15px;font-weight:500;
  padding:18px 44px 6px 36px;
  border-bottom:1.5px solid var(--line);
  transition:border-color .25s;
}
.field input:focus{border-bottom-color:transparent}
.field input::-ms-reveal,
.field input::-ms-clear{display:none}

.field label{
  position:absolute;left:36px;top:50%;transform:translateY(-50%);
  font-size:14px;color:var(--muted);font-weight:500;
  pointer-events:none;transition:.25s cubic-bezier(.2,.8,.2,1);
}
.field input:focus ~ label,
.field input:not(:placeholder-shown) ~ label,
.field input:valid ~ label{
  top:-2px;left:0;font-size:11px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--accent);
}

.field-icon{
  position:absolute;left:4px;top:50%;transform:translateY(-50%);
  width:20px;height:20px;color:var(--muted);
  display:flex;align-items:center;justify-content:center;
  transition:color .25s, transform .25s;
  pointer-events:none;
}
.field-icon svg{width:20px;height:20px}
.field input:focus ~ .field-icon{color:var(--accent);transform:translateY(-50%) scale(1.08)}

/* linha gradiente animada no focus */
.field-line{
  position:absolute;left:0;right:0;bottom:0;height:1.5px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  transform:scaleX(0);transform-origin:left center;
  transition:transform .35s cubic-bezier(.2,.8,.2,1);
}
.field input:focus ~ .field-line{transform:scaleX(1)}

/* autofill (sem amarelo) */
.field input:-webkit-autofill,
.field input:-webkit-autofill:hover,
.field input:-webkit-autofill:focus{
  -webkit-text-fill-color:var(--text);
  -webkit-box-shadow:0 0 0 1000px transparent inset;
  transition:background-color 9999s ease-out, color 9999s ease-out;
  caret-color:var(--text);
}

/* toggle senha (fica à direita) */
.toggle-pw{
  position:absolute;right:4px;top:50%;transform:translateY(-50%);
  width:32px;height:32px;border:none;background:transparent;color:var(--muted);
  display:flex;align-items:center;justify-content:center;cursor:pointer;border-radius:8px;
  transition:color .2s, background .2s;
}
.toggle-pw:hover{color:var(--text);background:rgba(255,255,255,.06)}
.toggle-pw svg{width:18px;height:18px}

/* --- Erro --- */
.error{
  display:flex;align-items:center;gap:10px;
  margin:18px 0 -4px;padding:10px 12px;
  background:rgba(244,63,94,.08);border:1px solid rgba(244,63,94,.3);
  border-radius:12px;color:#fecdd3;font-size:13px;
  animation:errIn .3s ease;
}
.error svg{width:16px;height:16px;flex-shrink:0;color:var(--danger)}
@keyframes errIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* --- Botão --- */
.btn-submit{
  position:relative;width:100%;height:50px;margin-top:28px;
  border:none;outline:none;cursor:pointer;
  border-radius:14px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 100%);
  background-size:200% 100%;
  color:#fff;font-size:15px;font-weight:600;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;gap:8px;
  box-shadow:0 12px 28px -10px rgba(139,92,246,.65), 0 0 0 1px rgba(255,255,255,.08) inset;
  transition:transform .15s, box-shadow .25s, background-position .5s;
  overflow:hidden;
}
.btn-submit::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg, transparent 30%, rgba(255,255,255,.25) 50%, transparent 70%);
  transform:translateX(-100%);transition:transform .7s;
}
.btn-submit:hover{background-position:100% 0;transform:translateY(-1px);box-shadow:0 18px 36px -10px rgba(139,92,246,.8), 0 0 0 1px rgba(255,255,255,.12) inset}
.btn-submit:hover::after{transform:translateX(100%)}
.btn-submit:active{transform:translateY(0)}
.btn-arrow{width:18px;height:18px;transition:transform .25s}
.btn-submit:hover .btn-arrow{transform:translateX(3px)}

.btn-spinner{
  display:none;width:18px;height:18px;border-radius:50%;
  border:2px solid rgba(255,255,255,.3);border-top-color:#fff;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

.login-card.loading .btn-label,
.login-card.loading .btn-arrow{display:none}
.login-card.loading .btn-spinner{display:inline-block}
.login-card.loading .btn-submit{pointer-events:none;opacity:.85}

/* --- Footer --- */
.foot{margin-top:22px;text-align:center;font-size:11.5px;color:var(--muted);letter-spacing:.04em}

/* --- Mobile --- */
@media (max-width:480px){
  .login-card{padding:34px 24px 22px;border-radius:20px}
}
@media (max-width:360px){
  .stage{padding:0}
  .login-card{max-width:100%;min-height:100vh;border:none;border-radius:0;padding:60px 24px 32px;display:flex;flex-direction:column;justify-content:center}
  .login-card::before{display:none}
}