.login-page {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1.5rem, 4vw, 3rem);
  overflow: hidden;
  background:
    radial-gradient(900px 600px at 15% 10%, rgba(255, 201, 77, 0.18), transparent 60%),
    radial-gradient(700px 500px at 85% 80%, rgba(30, 95, 163, 0.35), transparent 55%),
    linear-gradient(160deg, var(--ds-navy-900) 0%, var(--ds-navy-950) 55%, #041525 100%);
}

.login-page::after {
  content: '';
  position: absolute;
  inset: auto -10% -20% auto;
  width: 70%;
  height: 45%;
  background: linear-gradient(90deg, transparent, rgba(255, 201, 77, 0.12));
  transform: skewY(-8deg);
  pointer-events: none;
}

/* Card */
.login-form-card {
  position: relative;
  z-index: 1;
  width: min(100%, 400px);
  background: rgba(255, 255, 255, 0.97);
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 1.35rem;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.8) inset,
    0 24px 64px rgba(4, 21, 37, 0.42),
    0 8px 24px rgba(7, 31, 56, 0.18);
  padding: 2rem 2rem 1.85rem;
  animation: login-card-in 0.65s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.login-form-card__accent {
  position: absolute;
  top: 0;
  left: 1.5rem;
  right: 1.5rem;
  height: 3px;
  border-radius: 0 0 4px 4px;
  background: linear-gradient(90deg, var(--ds-gold-500), var(--ds-gold-400), var(--ds-gold-500));
  opacity: 0.95;
}

@keyframes login-card-in {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Brand */
.login-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.1rem;
  text-align: center;
  animation: login-brand-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.08s both;
}

.login-brand__logo {
  width: 6.75rem;
  height: 6.75rem;
  object-fit: contain;
}

.login-brand__text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  max-width: 19rem;
}

.login-brand__app {
  margin: 0;
  font-family: var(--ds-font-display);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--ds-navy-950);
}

.login-brand__institution {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.005em;
  color: var(--ds-navy-700);
}

@keyframes login-brand-in {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.92);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Fields */
.login-field {
  margin-bottom: 0;
  animation: login-field-in 0.6s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.login-field:nth-child(1) { animation-delay: 0.14s; }
.login-field:nth-child(2) { animation-delay: 0.22s; }

@keyframes login-field-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-field__label {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ds-navy-800);
}

.login-field__control {
  position: relative;
  display: flex;
  align-items: center;
}

.login-field__icon {
  position: absolute;
  left: 0.9rem;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ds-navy-600);
  font-size: 0.95rem;
  line-height: 1;
  pointer-events: none;
  transition: color 0.2s ease;
}

.login-field__input {
  width: 100%;
  min-height: 2.85rem;
  padding: 0.65rem 0.9rem 0.65rem 2.65rem;
  border: 1.5px solid rgba(11, 50, 88, 0.12);
  border-radius: 0.7rem;
  background: var(--ds-bg-subtle);
  color: var(--ds-text);
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.4;
  box-shadow: inset 0 1px 2px rgba(7, 31, 56, 0.04);
  transition:
    border-color 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
}

.login-field__input::placeholder {
  color: rgba(95, 111, 130, 0.72);
  font-weight: 400;
}

.login-field__input:hover {
  border-color: rgba(11, 50, 88, 0.2);
  background: #fff;
}

.login-field__input:focus {
  outline: none;
  border-color: var(--ds-navy-600);
  background: #fff;
  box-shadow:
    0 0 0 3px rgba(22, 74, 133, 0.14),
    inset 0 1px 2px rgba(7, 31, 56, 0.03);
}

.login-field__control:focus-within .login-field__icon {
  color: var(--ds-navy-700);
}

.login-field__control:has(#id_password) .login-field__input {
  padding-right: 2.75rem;
}

.login-field__toggle {
  position: absolute;
  right: 0.35rem;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.15rem;
  height: 2.15rem;
  padding: 0;
  border: none;
  border-radius: 0.5rem;
  background: transparent;
  color: var(--ds-text-muted);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease;
}

.login-field__toggle:hover {
  color: var(--ds-navy-700);
  background: rgba(11, 50, 88, 0.06);
}

.login-field__toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px rgba(22, 74, 133, 0.25);
}

.login-field--invalid .login-field__input {
  border-color: var(--ds-danger);
  background: var(--ds-danger-bg);
}

.login-field--invalid .login-field__icon {
  color: var(--ds-danger);
}

/* Submit */
.login-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 3rem;
  margin-top: 0.35rem;
  padding: 0.75rem 1.25rem;
  border: none;
  border-radius: 0.7rem;
  background: linear-gradient(135deg, var(--ds-gold-400) 0%, var(--ds-gold-500) 55%, var(--ds-gold-600) 100%);
  color: var(--ds-navy-950);
  font-family: var(--ds-font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.2;
  cursor: pointer;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.35) inset,
    0 4px 14px rgba(201, 143, 0, 0.35);
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    filter 0.18s ease;
  animation: login-field-in 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.3s both;
}

.login-submit:hover {
  filter: brightness(1.03);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.4) inset,
    0 8px 22px rgba(201, 143, 0, 0.42);
  transform: translateY(-1px);
}

.login-submit:active {
  transform: translateY(0);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.3) inset,
    0 3px 10px rgba(201, 143, 0, 0.28);
}

.login-submit:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 3px rgba(255, 201, 77, 0.45),
    0 4px 14px rgba(201, 143, 0, 0.35);
}

/* Validation slot (reserved space + separator) */
.login-field__feedback {
  min-height: 1.2rem;
  margin: 0.22rem 0 0;
  padding: 0 0.15rem;
  font-size: 0.76rem;
  font-weight: 500;
  line-height: 1.3;
  color: transparent;
  user-select: none;
}

.login-field--invalid .login-field__feedback,
.was-validated .login-field:has(.login-field__input:invalid) .login-field__feedback {
  color: var(--ds-danger);
}

.was-validated .login-field__input:valid,
.login-field__input.is-valid,
.was-validated .login-field__input:invalid,
.login-field__input.is-invalid {
  background-image: none !important;
}

@media (max-width: 420px) {
  .login-form-card {
    padding: 2rem 1.35rem 1.75rem;
    border-radius: 1.15rem;
  }

  .login-brand__logo {
    width: 6.25rem;
    height: 6.25rem;
  }

  .login-brand__app {
    font-size: 1.4rem;
  }

  .login-brand__institution {
    font-size: 0.74rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .login-form-card,
  .login-brand,
  .login-field,
  .login-submit {
    animation: none;
  }

  .login-submit:hover {
    transform: none;
  }

}