.signup-overlay {
  --cosmos-cyan: #67e8f9;
  --cosmos-blue: #4f8cff;
  --cosmos-violet: #9b7bff;
  --cosmos-panel: rgba(3, 12, 31, .94);
}

.signup-overlay.is-open {
  background:
    radial-gradient(circle at 70% 42%, rgba(37, 99, 235, .18), transparent 32%),
    radial-gradient(circle at 30% 66%, rgba(109, 40, 217, .13), transparent 36%),
    rgba(0, 4, 14, .72);
  backdrop-filter: blur(15px) saturate(1.16);
  -webkit-backdrop-filter: blur(15px) saturate(1.16);
}

.signup-overlay .signup-overlay__panel {
  border: 1px solid rgba(103, 232, 249, .18);
  background:
    radial-gradient(circle at 90% 5%, rgba(79, 140, 255, .18), transparent 30%),
    radial-gradient(circle at 4% 100%, rgba(139, 92, 246, .15), transparent 34%),
    radial-gradient(circle at 12% 15%, rgba(103, 232, 249, .06) 0 1px, transparent 2px),
    radial-gradient(circle at 73% 26%, rgba(255, 255, 255, .055) 0 1px, transparent 2px),
    linear-gradient(152deg, rgba(7, 23, 51, .97), var(--cosmos-panel) 48%, rgba(5, 8, 27, .97));
  background-size: auto, auto, 94px 94px, 132px 132px, auto;
  box-shadow:
    0 0 0 1px rgba(99, 102, 241, .10) inset,
    0 1px 0 rgba(255, 255, 255, .08) inset,
    0 26px 86px rgba(0, 0, 0, .62),
    0 0 78px rgba(37, 99, 235, .17),
    0 0 120px rgba(109, 40, 217, .08);
}

.signup-overlay .signup-overlay__panel::after {
  opacity: .9;
  background: linear-gradient(
    118deg,
    rgba(103, 232, 249, .72),
    rgba(79, 140, 255, .35) 34%,
    rgba(155, 123, 255, .72) 67%,
    rgba(103, 232, 249, .32)
  );
}

.signup-overlay .signup-overlay__head {
  padding-bottom: 15px;
  border-bottom: 1px solid rgba(103, 232, 249, .10);
}

.signup-overlay .signup-overlay__head h2 {
  color: #f4f8ff;
  font-weight: 780;
  text-shadow: 0 0 24px rgba(79, 140, 255, .25);
}

.signup-overlay .signup-overlay__head p {
  color: #8498b8;
}

.signup-overlay .signup-close {
  color: #9fb4d4;
  background: rgba(7, 20, 44, .74);
  box-shadow:
    0 0 0 1px rgba(103, 232, 249, .14) inset,
    0 10px 24px rgba(0, 0, 0, .18);
}

.signup-overlay .signup-close:hover,
.signup-overlay .signup-close:focus-visible {
  color: #ecfeff;
  background: rgba(10, 40, 73, .88);
  box-shadow: 0 0 0 1px rgba(103, 232, 249, .42) inset, 0 0 24px rgba(34, 211, 238, .12);
}

.signup-overlay .signup-field label,
.signup-overlay .signup-plans legend {
  color: #8da2c2;
}

.signup-overlay .signup-field input,
.signup-overlay .signup-field textarea {
  border: 1px solid rgba(91, 122, 171, .16);
  color: #eaf2ff;
  caret-color: var(--cosmos-cyan);
  background: linear-gradient(145deg, rgba(2, 9, 25, .84), rgba(7, 20, 44, .72));
  box-shadow:
    0 0 0 1px rgba(2, 6, 23, .25) inset,
    0 8px 24px rgba(0, 0, 0, .12);
}

.signup-overlay .signup-field input::placeholder,
.signup-overlay .signup-field textarea::placeholder {
  color: #526684;
}

#signup-overlay .signup-field input:disabled {
  border-color: rgba(91, 122, 171, .09);
  color: rgba(148, 163, 184, .38);
  background: rgba(2, 8, 21, .46);
  box-shadow: none;
  cursor: not-allowed;
}

#signup-overlay .signup-field input:disabled::placeholder { color: rgba(82, 102, 132, .42); }
#signup-overlay .signup-agreements input:disabled { cursor: not-allowed; opacity: .45; }
#signup-overlay .is-plan-locked .signup-form-grid,
#signup-overlay .is-plan-locked .signup-agreements { opacity: .66; }

.signup-overlay .signup-field input:hover,
.signup-overlay .signup-field textarea:hover {
  border-color: rgba(79, 140, 255, .30);
}

.signup-overlay .signup-field input:focus,
.signup-overlay .signup-field textarea:focus {
  border-color: rgba(103, 232, 249, .62);
  background: linear-gradient(145deg, rgba(3, 14, 34, .96), rgba(8, 27, 56, .86));
  box-shadow:
    0 0 0 3px rgba(34, 211, 238, .09),
    0 0 28px rgba(37, 99, 235, .10);
}

.signup-overlay .intro-btn {
  min-height: 44px;
  padding: 10px 22px;
}

.signup-overlay .intro-btn--primary {
  color: #edf7ff;
  border: 1px solid rgba(125, 211, 252, .26);
  background:
    radial-gradient(circle at 15% 15%, rgba(103, 232, 249, .13), transparent 30%),
    linear-gradient(125deg, rgba(9, 48, 84, .98), rgba(21, 54, 103, .98) 58%, rgba(39, 40, 83, .98));
  box-shadow:
    0 0 0 1px rgba(191, 219, 254, .08) inset,
    0 1px 0 rgba(255, 255, 255, .13) inset,
    0 12px 30px rgba(1, 12, 34, .36),
    0 0 26px rgba(56, 189, 248, .08);
}

.signup-overlay .intro-btn--primary::after {
  opacity: .62;
  background: linear-gradient(115deg, rgba(125, 211, 252, .56), rgba(96, 165, 250, .24), rgba(129, 140, 248, .42));
}

.signup-overlay .intro-btn--primary:hover {
  background:
    radial-gradient(circle at 15% 15%, rgba(103, 232, 249, .18), transparent 32%),
    linear-gradient(125deg, rgba(10, 61, 101, .99), rgba(25, 66, 119, .99) 58%, rgba(48, 47, 94, .99));
  box-shadow:
    0 0 0 1px rgba(186, 230, 253, .12) inset,
    0 1px 0 rgba(255, 255, 255, .16) inset,
    0 15px 34px rgba(1, 12, 34, .42),
    0 0 30px rgba(56, 189, 248, .11);
}

.signup-overlay .intro-btn--ghost {
  color: #9eb0ca;
  background: rgba(5, 16, 37, .74);
  box-shadow: 0 0 0 1px rgba(103, 232, 249, .13) inset, 0 10px 26px rgba(0, 0, 0, .18);
}

.signup-overlay .signup-msg--ok { color: #67e8f9; }
.signup-overlay .signup-msg--err { color: #fda4af; }

#signup-overlay .signup-plan {
  border-color: rgba(91, 122, 171, .18);
  background:
    radial-gradient(circle at 86% 12%, rgba(79, 140, 255, .10), transparent 38%),
    linear-gradient(145deg, rgba(3, 13, 34, .78), rgba(8, 22, 48, .68));
}

#signup-overlay .signup-plan:hover {
  border-color: rgba(103, 232, 249, .40);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .20), 0 0 28px rgba(37, 99, 235, .08);
}

#signup-overlay .signup-plan:has(input:checked) {
  border-color: rgba(103, 232, 249, .72);
  background:
    radial-gradient(circle at 85% 10%, rgba(139, 92, 246, .22), transparent 42%),
    linear-gradient(145deg, rgba(8, 80, 112, .30), rgba(24, 35, 83, .70));
  box-shadow:
    0 0 0 3px rgba(34, 211, 238, .07),
    0 14px 36px rgba(0, 0, 0, .28),
    0 0 34px rgba(79, 140, 255, .12);
}

#signup-overlay .signup-plan__name { color: #81effb; }
#signup-overlay .signup-plan small { color: #7187a7; }

#signup-overlay .signup-plan-guide {
  margin-left: 9px;
  color: #fda4af;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
}

#signup-overlay .signup-plan-guide[hidden] { display: none; }

#signup-overlay .signup-agreements {
  border: 1px solid rgba(91, 122, 171, .12);
  background: rgba(2, 10, 27, .56);
}

#signup-overlay .signup-agreements label { color: #93a5bf; }
#signup-overlay .signup-agreements a { color: #7eeaf6; }

#signup-overlay .signup-username-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 9px;
}

#signup-overlay .signup-check-button {
  min-width: 92px;
  padding: 0 15px;
  border: 1px solid rgba(103, 232, 249, .28);
  border-radius: 12px;
  color: #a9eff7;
  font-weight: 760;
  background: linear-gradient(145deg, rgba(8, 37, 66, .95), rgba(14, 30, 61, .92));
  box-shadow: 0 8px 22px rgba(0, 0, 0, .18), 0 0 20px rgba(56, 189, 248, .05);
  cursor: pointer;
}

#signup-overlay .signup-check-button:hover,
#signup-overlay .signup-check-button:focus-visible {
  border-color: rgba(103, 232, 249, .58);
  color: #ecfeff;
  box-shadow: 0 0 0 3px rgba(34, 211, 238, .08), 0 8px 22px rgba(0, 0, 0, .22);
}

#signup-overlay .signup-check-button:disabled { opacity: .42; cursor: not-allowed; }
#signup-overlay .signup-field-status { min-height: 17px; color: #7187a7; font-size: 11px; }
#signup-overlay .signup-field-status.is-ok { color: #67e8f9; }
#signup-overlay .signup-field-status.is-error { color: #fda4af; }

#signup-overlay .signup-payment-summary {
  margin: 13px 0 0;
  padding: 11px 14px;
  border: 1px solid rgba(103, 232, 249, .13);
  border-radius: 12px;
  color: #92a8c7;
  background: linear-gradient(90deg, rgba(12, 54, 86, .22), rgba(41, 31, 88, .18));
  font-size: 12px;
  text-align: right;
}

#signup-overlay .signup-payment-summary strong { color: #8ceef8; font-size: 14px; }

#signup-overlay { padding: 12px; }

#signup-overlay .signup-overlay__panel {
  width: min(980px, calc(100vw - 24px));
  max-height: calc(100dvh - 24px);
  overflow-x: hidden;
  overflow-y: auto;
}

@media (max-width: 560px) {
  #signup-overlay .signup-username-row { grid-template-columns: 1fr; }
  #signup-overlay .signup-check-button { min-height: 42px; }
}

#login-overlay .mfa-setup-card,
#login-overlay .mfa-recovery-card {
  border-color: rgba(103, 232, 249, .16);
  background: linear-gradient(145deg, rgba(2, 10, 28, .68), rgba(10, 25, 53, .58));
}

#login-overlay .mfa-manual-toggle,
#login-overlay .mfa-recovery-toggle,
#login-overlay .mfa-copy-button {
  color: #7eeaf6;
}

#login-overlay .mfa-manual-key,
#login-overlay .mfa-recovery-codes li {
  color: #dcecff;
  background: rgba(1, 7, 21, .78);
}

#login-submit {
  min-width: 138px;
  overflow: hidden;
  border: 1px solid rgba(125, 211, 252, .28);
  background:
    radial-gradient(circle at 18% 20%, rgba(103, 232, 249, .15), transparent 30%),
    linear-gradient(125deg, rgba(9, 48, 84, .98), rgba(21, 54, 103, .98) 58%, rgba(39, 40, 83, .98));
  box-shadow:
    0 0 0 1px rgba(191, 219, 254, .08) inset,
    0 1px 0 rgba(255, 255, 255, .14) inset,
    0 13px 34px rgba(1, 12, 34, .40),
    0 0 28px rgba(56, 189, 248, .10),
    0 0 44px rgba(99, 102, 241, .06);
}

#login-submit::before {
  inset: 1px auto 1px -22%;
  width: 30%;
  opacity: .42;
  background: linear-gradient(90deg, transparent, rgba(224, 251, 255, .76), transparent);
  animation: loginCosmosSweep 3.8s ease-in-out infinite;
}

#login-submit:hover {
  transform: translateY(-2px) scale(1.008);
  background:
    radial-gradient(circle at 18% 20%, rgba(103, 232, 249, .20), transparent 32%),
    linear-gradient(125deg, rgba(10, 61, 101, .99), rgba(25, 66, 119, .99) 58%, rgba(48, 47, 94, .99));
  box-shadow:
    0 0 0 1px rgba(186, 230, 253, .13) inset,
    0 1px 0 rgba(255, 255, 255, .17) inset,
    0 16px 38px rgba(1, 12, 34, .44),
    0 0 34px rgba(56, 189, 248, .13),
    0 0 50px rgba(99, 102, 241, .08);
}

@keyframes loginCosmosSweep {
  0%, 58% { opacity: 0; transform: translateX(-160%) skewX(-22deg); }
  70% { opacity: .72; }
  88%, 100% { opacity: 0; transform: translateX(520%) skewX(-22deg); }
}

body.is-login-submitting #login-overlay .signup-overlay__panel {
  box-shadow:
    0 0 0 1px rgba(103, 232, 249, .24) inset,
    0 28px 90px rgba(0, 0, 0, .65),
    0 0 110px rgba(37, 99, 235, .19),
    0 0 76px rgba(139, 92, 246, .10);
}

@media (max-width: 520px) {
  .signup-overlay .signup-overlay__panel {
    border-radius: 20px;
    box-shadow: 0 18px 58px rgba(0, 0, 0, .58), 0 0 54px rgba(37, 99, 235, .13);
  }
}

@media (prefers-reduced-motion: reduce) {
  #login-submit::before { animation: none; opacity: 0; }
}