:root {
  --auth-card-max-width: 420px;
  --auth-card-padding-block: 40px;
  --auth-card-padding-inline: 32px;
  --auth-card-background: rgba(12, 6, 25, 0.45);
  --auth-card-border: rgba(124, 58, 237, 0.2);
  --auth-card-shadow: 0 0 30px rgba(0, 0, 0, 0.4);
  --auth-input-background: rgba(0, 0, 0, 0.35);
  --auth-input-border: rgba(124, 58, 237, 0.4);
  --auth-input-focus: rgba(167, 139, 250, 0.65);
  --auth-primary: var(--p1, #7C3AED);
  --auth-primary-soft: var(--p2, #A78BFA);
}

.auth-shell {
  position: relative;
  width: min(var(--auth-card-max-width), calc(100vw - 32px));
  margin: 0 auto;
  min-height: clamp(420px, 60vh, 560px);
  transition: height 0.35s ease;
}

.auth-shell--hidden {
  display: none;
}

.auth-card {
  position: absolute;
  top: 0;
  left: 50%;
  z-index: 2;
  width: 100%;
  max-width: var(--auth-card-max-width);
  padding: var(--auth-card-padding-block) var(--auth-card-padding-inline);
  border-radius: 24px;
  background: var(--auth-card-background);
  border: 1px solid var(--auth-card-border);
  backdrop-filter: blur(12px);
  box-shadow: var(--auth-card-shadow);
  text-align: center;
  overflow: hidden;
  box-sizing: border-box;
  opacity: 0;
  transform: translate(-50%, 40px) scale(0.92);
  pointer-events: none;
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.auth-card.auth-card--visible {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
  pointer-events: auto;
}

.auth-card.auth-card--hidden {
  display: none;
}

.auth-card::before {
  content: "";
  position: absolute;
  inset: -20px;
  background: radial-gradient(circle at center, rgba(124, 58, 237, 0.3), transparent 70%);
  filter: blur(40px);
  z-index: -1;
}

.auth-card h1 {
  margin-bottom: 8px;
  font-size: 1.75rem;
}

.auth-card p {
  margin-top: 0;
  margin-bottom: 24px;
  font-size: 1rem;
  color: var(--auth-primary-soft);
}

.auth-card form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: left;
}

.auth-card.auth-card--visible form > * {
  animation: slideUpFadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.auth-card.auth-card--visible form > *:nth-child(1) {
  animation-delay: 0.1s;
}

.auth-card.auth-card--visible form > *:nth-child(2) {
  animation-delay: 0.15s;
}

.auth-card.auth-card--visible form > *:nth-child(3) {
  animation-delay: 0.2s;
}

.auth-card.auth-card--visible form > *:nth-child(4) {
  animation-delay: 0.25s;
}

@keyframes slideUpFadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.auth-card label {
  display: block;
  font-size: 0.875rem;
  margin-bottom: 4px;
  font-weight: 500;
}

.auth-card input {
  width: 100%;
  box-sizing: border-box;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--auth-input-border);
  background: var(--auth-input-background);
  color: #fff;
  font-size: 1rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease, background-color 0.3s ease;
}

.auth-card input::placeholder {
  color: rgba(255, 255, 255, 0.65);
  transition: color 0.3s ease;
}

.auth-card input:hover:not(:disabled) {
  border-color: rgba(167, 139, 250, 0.5);
  background: rgba(0, 0, 0, 0.4);
}

.auth-card input:focus-visible,
.primary-button:focus-visible,
.secondary-button:focus-visible,
.password-toggle:focus-visible {
  outline: 2px solid var(--auth-input-focus);
  outline-offset: 2px;
}

.auth-card input:focus {
  border-color: var(--auth-input-focus);
  box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.25);
  transform: scale(1.01);
  background: rgba(0, 0, 0, 0.45);
}

.auth-card input:focus::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.auth-card input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  border-color: rgba(124, 58, 237, 0.2);
}

.primary-button {
  margin-top: 8px;
  background: linear-gradient(135deg, var(--auth-primary), var(--auth-primary-soft));
  border: none;
  color: #fff;
  padding: 12px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  font-size: 1rem;
  font-family: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
  position: relative;
  overflow: hidden;
}

.primary-button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(124, 58, 237, 0.4);
  filter: brightness(1.05);
}

.primary-button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.primary-button.loading {
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
  }
  50% {
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.6);
  }
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-right: 8px;
  vertical-align: middle;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.secondary-button {
  background: transparent;
  border: 1px solid rgba(124, 58, 237, 0.3);
  color: var(--auth-primary-soft);
  padding: 10px 18px;
  border-radius: 9999px;
  font-weight: 500;
  cursor: pointer;
  font-size: 0.9rem;
  font-family: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.secondary-button:hover:not(:disabled) {
  background: rgba(124, 58, 237, 0.15);
  border-color: var(--auth-primary-soft);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 10px 30px rgba(124, 58, 237, 0.25);
}

.secondary-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.password-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.password-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.password-input-wrapper input {
  padding-right: 48px;
}

.password-toggle {
  position: absolute;
  top: 50%;
  right: 8px;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  border-radius: 9999px;
  border: 1px solid transparent;
  background: rgba(124, 58, 237, 0.08);
  color: var(--auth-primary-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.password-toggle:hover {
  background: rgba(124, 58, 237, 0.18);
  border-color: rgba(124, 58, 237, 0.4);
  color: #fff;
  transform: translateY(-50%) scale(1.03);
}

.password-toggle[aria-pressed="true"] {
  background: rgba(124, 58, 237, 0.22);
  border-color: rgba(124, 58, 237, 0.5);
  color: #fff;
}

.password-toggle[aria-pressed="true"]:hover {
  background: rgba(124, 58, 237, 0.28);
}

.password-toggle__icon {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.password-toggle__icon--hide {
  display: none;
}

.password-toggle[aria-pressed="true"] .password-toggle__icon--show {
  display: none;
}

.password-toggle[aria-pressed="true"] .password-toggle__icon--hide {
  display: inline;
}

.remember-me-field {
  margin: 4px 0;
}

.remember-me-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.85);
  transition: color 0.2s ease;
}

.remember-me-label:hover {
  color: var(--auth-primary-soft);
}

.remember-me-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--auth-primary);
  border-radius: 4px;
}

.auth-toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(-12px) scale(0.96);
  z-index: 10000;
  max-width: 360px;
  width: calc(100% - 48px);
  padding: 12px 44px 12px 16px;
  border-radius: 16px;
  font-size: 0.9rem;
  line-height: 1.4;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  box-shadow: 0 14px 45px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(14px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.24s ease, transform 0.24s ease;
}

.auth-toast.toast-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0) scale(1);
  pointer-events: auto;
}

.auth-toast--error {
  color: #fca5a5;
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.35);
}

.auth-toast--success {
  color: #86efac;
  background: rgba(74, 222, 128, 0.1);
  border: 1px solid rgba(74, 222, 128, 0.35);
}

.auth-toast__message {
  flex: 1;
}

.close-button {
  position: absolute;
  top: 8px;
  right: 8px;
  background: transparent;
  border: none;
  color: currentColor;
  cursor: pointer;
  padding: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  opacity: 0.7;
  transition: opacity 0.2s ease, background-color 0.2s ease;
}

.close-button:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.12);
}

.close-button:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    backdrop-filter: blur(0px);
  }
  to {
    opacity: 1;
    backdrop-filter: blur(12px);
  }
}

.loading-overlay-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  text-align: center;
  animation: scaleIn 0.4s ease-out;
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.loading-overlay .spinner-large {
  width: 48px;
  height: 48px;
  border: 4px solid rgba(167, 139, 250, 0.2);
  border-top-color: var(--auth-primary-soft);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0;
}

.loading-overlay-text {
  color: #fff;
  font-size: 1.1rem;
  font-weight: 600;
}

.loading-overlay-subtext {
  color: var(--auth-primary-soft);
  font-size: 0.9rem;
}

@media (max-width: 540px) {
  .auth-shell {
    width: min(360px, calc(100vw - 24px));
  }

  .auth-card {
    padding: 32px 24px;
    border-radius: 20px;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .auth-toast {
    top: 16px;
    width: calc(100% - 32px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .auth-shell {
    transition: none;
  }

  .auth-card {
    transition: none;
    transform: translate(-50%, 0) scale(1) !important;
  }

  .auth-card.auth-card--visible {
    transform: translate(-50%, 0) scale(1);
  }

  .auth-card.auth-card--visible form > * {
    animation: none !important;
  }

  .auth-toast {
    transition: none;
    transform: translateX(-50%) !important;
  }

  .loading-overlay {
    animation: none !important;
  }

  .loading-overlay-content {
    animation: none !important;
  }
}