body {
  min-height: 100dvh;
  background:
    radial-gradient(circle at top left, rgba(20, 94, 216, 0.10), transparent 32%),
    radial-gradient(circle at bottom right, rgba(15, 118, 110, 0.08), transparent 28%),
    linear-gradient(180deg, #f4f8ff 0%, #eef4fb 100%);
  color: var(--color-text);
}

body[data-shell="auth"] {
  display: flex;
  flex-direction: column;
  gap: 0;
  min-height: 100dvh;
  padding: 0;
}

body[data-shell="auth"] .shell-footer {
  width: 100%;
  margin-top: auto;
}

.auth-shell {
  flex: 1 0 auto;
  display: flex;
  align-items: center;
  width: min(560px, calc(100vw - 28px));
  margin: 0 auto;
  padding: clamp(20px, 5vh, 48px) 0;
  min-height: clamp(360px, 48dvh, 640px);
}

body[data-shell="auth"][data-auth-page="register"] .auth-shell {
  min-height: clamp(460px, 58dvh, 760px);
}

body[data-shell="auth"][data-auth-page="register"] .auth-card--form {
  min-height: clamp(260px, 34dvh, 380px);
  align-content: start;
}

.auth-card {
  display: grid;
  width: 100%;
  gap: 16px;
  padding: clamp(55px, 8vw, 80px);
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(180, 196, 223, 0.42);
  border-radius: 0;
  box-shadow: var(--shadow-card);
}

.auth-card header {
  display: grid;
  gap: 8px;
  justify-items: center;
  text-align: center;
}

.auth-card header h1 {
  margin: 0;
  color: var(--color-primary-dark);
  font-size: clamp(26px, 2.8vw, 34px);
  line-height: 1.05;
}

.auth-card form {
  display: grid;
  gap: 12px;
}

.auth-card form > button[type="submit"] {
  margin-top: 10px;
}

.auth-card .label-group {
  display: grid;
  gap: 8px;
}

.auth-card .label-group label {
  color: var(--color-text);
  font-size: 13px;
  font-weight: 700;
}

.auth-card .label-group input,
.auth-card button[type="submit"] {
  min-height: 44px;
}

.auth-card button[type="submit"] {
  min-height: 48px;
  border: 1px solid rgba(15, 75, 177, 0.26);
  background: var(--color-primary-dark);
  color: #ffffff;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.02em;
  box-shadow: var(--shadow-pop);
}

.auth-card button[type="submit"]:hover,
.auth-card button[type="submit"]:focus-visible {
  transform: translateY(-1px);
  background: #0f4bb1;
  box-shadow: var(--shadow-pop);
}

.auth-card .status {
  margin: 0;
}

.auth-card .status--panel {
  padding: 14px 16px;
  border: 1px solid rgba(180, 196, 223, 0.42);
  background: rgba(247, 250, 255, 0.96);
  color: var(--color-text);
  line-height: 1.6;
}

.auth-card .status--panel a {
  font-weight: 700;
}

.alt-link,
.legal-links {
  margin: -2px 0 0;
  color: var(--color-text-muted);
  font-size: 12px;
  line-height: 1.4;
}

.alt-link a,
.legal-links a {
  font-weight: 700;
}

@media (max-width: 640px) {
  body[data-shell="auth"] .shell-brand .tagline {
    display: block;
    font-size: 12px;
    line-height: 1.15;
  }

  .auth-shell {
    width: calc(100vw - 20px);
    align-items: stretch;
    padding: 10px 0 20px;
    min-height: clamp(420px, 56dvh, 720px);
  }

  body[data-shell="auth"][data-auth-page="register"] .auth-shell {
    min-height: clamp(500px, 64dvh, 820px);
  }

  .auth-card {
    gap: 14px;
    padding: 45px;
  }

  .auth-card form > button[type="submit"] {
    margin-top: 12px;
  }
}