.auth-overlay{
  position:fixed;inset:0;z-index:9999;
  background:rgba(2,6,15,.78);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  display:none;align-items:center;justify-content:center;
  padding:20px;
  opacity:0;transition:opacity .25s ease;
}
.auth-overlay.open{display:flex;opacity:1}
.auth-overlay[aria-hidden="false"]{display:flex}

.auth-modal{
  background:linear-gradient(160deg,#0a1f3a 0%,#071427 100%);
  border:1px solid rgba(0,184,217,.18);
  border-radius:24px;
  padding:clamp(28px,4vw,44px);
  width:100%;max-width:440px;
  position:relative;
  font-family:'Plus Jakarta Sans',system-ui,sans-serif;
  color:#f0f6ff;
  box-shadow:0 30px 80px rgba(0,0,0,.5),0 0 60px rgba(0,184,217,.08);
  transform:translateY(20px);opacity:0;
  transition:transform .3s cubic-bezier(.2,.9,.3,1),opacity .25s ease;
}
.auth-overlay.open .auth-modal{transform:translateY(0);opacity:1}

.auth-close{
  position:absolute;top:18px;right:18px;
  width:32px;height:32px;border-radius:50%;
  background:rgba(255,255,255,.06);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;line-height:1;color:rgba(240,246,255,.65);
  cursor:pointer;transition:background .15s;
  border:0;
}
.auth-close:hover{background:rgba(255,255,255,.12);color:#fff}

.auth-logo{height:40px;margin:0 auto 18px;display:block;opacity:.95}

.auth-title{
  font-size:clamp(22px,2.4vw,28px);font-weight:800;
  line-height:1.15;letter-spacing:-.02em;
  text-align:center;margin-bottom:8px;
}
.auth-subtitle{
  font-size:14px;color:rgba(240,246,255,.55);
  text-align:center;margin-bottom:24px;line-height:1.5;
}

.auth-step{display:none}
.auth-step.active{display:block;animation:authFadeIn .3s ease}
@keyframes authFadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

.auth-input{
  width:100%;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:12px;
  padding:14px 16px;
  font-size:15px;color:#f0f6ff;
  font-family:inherit;
  outline:none;
  transition:border-color .15s,background .15s;
}
.auth-input:focus{border-color:rgba(0,184,217,.5);background:rgba(0,184,217,.04)}
.auth-input::placeholder{color:rgba(240,246,255,.3)}
.auth-input[readonly]{opacity:.7;cursor:default}

.auth-field{margin-bottom:14px}
.auth-field-label{
  font-size:12px;font-weight:600;
  color:rgba(240,246,255,.6);margin-bottom:6px;
  display:block;
}
.auth-error{
  font-size:13px;color:#ff6060;
  margin-top:8px;line-height:1.4;
  display:none;
}
.auth-error.show{display:block}

.auth-btn{
  display:flex;align-items:center;justify-content:center;gap:10px;
  width:100%;
  padding:14px 20px;
  border-radius:12px;
  font-size:15px;font-weight:700;
  font-family:inherit;
  cursor:pointer;
  transition:transform .12s,box-shadow .2s,background .15s;
  border:0;
  margin-top:8px;
}
.auth-btn:active{transform:scale(.98)}
.auth-btn:disabled{opacity:.5;cursor:not-allowed}

.auth-btn-primary{
  background:linear-gradient(135deg,#00b8d9 0%,#38d4f0 100%);
  color:#04080f;
  box-shadow:0 4px 20px rgba(0,184,217,.3);
}
.auth-btn-primary:hover:not(:disabled){box-shadow:0 6px 28px rgba(0,184,217,.45)}

.auth-btn-oauth{
  background:#fff;color:#0a0a0a;
  border:1px solid rgba(255,255,255,.1);
}
.auth-btn-oauth.apple{background:#000;color:#fff;border:1px solid rgba(255,255,255,.15)}
.auth-btn-oauth:hover:not(:disabled){opacity:.92}
.auth-btn-oauth svg{width:18px;height:18px;flex-shrink:0}

.auth-btn-ghost{
  background:rgba(255,255,255,.06);color:#f0f6ff;
  border:1px solid rgba(255,255,255,.1);
}
.auth-btn-ghost:hover:not(:disabled){background:rgba(255,255,255,.1)}

.auth-divider{
  display:flex;align-items:center;gap:12px;
  margin:20px 0;color:rgba(240,246,255,.35);
  font-size:12px;font-weight:600;letter-spacing:1px;
}
.auth-divider::before,.auth-divider::after{
  content:'';flex:1;height:1px;background:rgba(255,255,255,.08);
}

.auth-link{
  background:none;border:0;color:#38d4f0;
  font-size:13px;font-weight:600;cursor:pointer;
  padding:0;margin:0;font-family:inherit;
  text-decoration:none;
}
.auth-link:hover{text-decoration:underline}

.auth-foot{
  text-align:center;font-size:12px;
  color:rgba(240,246,255,.4);margin-top:18px;line-height:1.5;
}
.auth-foot a{color:rgba(0,184,217,.8);text-decoration:underline}

.auth-store-row{
  display:flex;gap:12px;margin-top:18px;
}
.auth-store-btn{
  flex:1;display:flex;align-items:center;gap:10px;justify-content:center;
  padding:14px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
  border-radius:12px;
  color:#f0f6ff;font-size:13px;font-weight:600;
  text-decoration:none;
  transition:background .15s,border-color .15s;
}
.auth-store-btn:hover{background:rgba(255,255,255,.08);border-color:rgba(0,184,217,.3)}
.auth-store-btn svg{width:22px;height:22px;flex-shrink:0}

.auth-spinner{
  display:inline-block;width:16px;height:16px;
  border:2px solid currentColor;border-right-color:transparent;
  border-radius:50%;animation:authSpin .7s linear infinite;
}
@keyframes authSpin{to{transform:rotate(360deg)}}

.auth-typo-hint{
  font-size:13px;color:rgba(240,246,255,.6);
  margin-top:8px;line-height:1.4;display:none;
}
.auth-typo-hint.show{display:block}
.auth-typo-hint b{color:#38d4f0;cursor:pointer;text-decoration:underline}

.auth-status-pill{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(240,160,32,.12);color:#f0a020;
  padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:600;
  margin:0 auto 14px;
}
.auth-status-pill.danger{background:rgba(224,48,48,.12);color:#ff6060}
.auth-status-pill.ok{background:rgba(24,200,122,.12);color:#18c87a}

@media (max-width:480px){
  .auth-modal{padding:24px 20px;border-radius:20px}
  .auth-title{font-size:20px}
}