/* Auth Surface */

.interface-auth-root {
  display: none;
  width: 100vw;
  height: 100vh;
  background: var(--main-background-color);
  color: var(--color-ink);
  overflow-y: auto;
  overflow-x: hidden;
}

.interface-auth-root.is-active {
  display: block;
}

.interface-main-area.is-auth-hidden {
  display: none;
}

.interface-auth-view {
  display: flex;
  width: 100%;
  min-height: 100%;
}

.auth-form-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100%;
  width: 100%;
  padding: var(--space-4);
}

@media (max-height: 760px) {
  .auth-form-container {
    align-items: flex-start;
  }
}

.auth-form-card {
  width: 100%;
  max-width: 400px;
  background: var(--main-background-color);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}

.auth-form-header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: center;
  margin-bottom: 5rem;
}

.auth-form-logo {
  display: block;
  width: 250px;
  height: 250px;
  margin-left: auto;
  margin-right: auto;
}

.auth-form-tagline {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.auth-form .form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.auth-form .form-group label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-ink);
}

.auth-form .form-group label .optional {
  font-weight: var(--weight-normal);
  color: var(--color-ink-lighter);
}

.auth-form .form-group input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--main-background-color-third);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  color: var(--color-ink);
  transition: all var(--transition-fast);
}

.auth-form .form-group input:focus {
  background: var(--main-background-color);
  border-color: var(--color-ink);
  outline: none;
}

.auth-form .form-group input::placeholder {
  color: var(--color-ink-lighter);
}

.auth-input-with-prefix {
  display: flex;
  align-items: stretch;
  background: var(--main-background-color-third);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--radius-full);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.auth-input-with-prefix:focus-within {
  background: var(--main-background-color);
  border-color: var(--color-ink);
}

.auth-input-prefix {
  display: flex;
  align-items: center;
  padding: var(--space-3);
  padding-right: 0;
  font-size: var(--text-base);
  color: var(--color-ink-lighter);
  background: transparent;
  user-select: none;
}

.auth-input-with-prefix input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  padding-left: var(--space-1);
  background: transparent !important;
  border: none !important;
  font-size: var(--text-base);
  color: var(--color-ink);
}

.auth-input-with-prefix input:focus {
  outline: none;
}

.field-status {
  font-size: var(--text-xs);
  padding: var(--space-1) 0;
  transition: all var(--transition-fast);
}

.field-status.status-checking {
  color: var(--color-ink-lighter);
}

.field-status.status-available {
  color: var(--color-positive);
}

.field-status.status-taken,
.field-status.status-invalid {
  color: var(--color-negative);
}

.auth-error {
  padding: var(--space-3) var(--space-4);
  background: rgba(220, 53, 69, 0.1);
  border: var(--border-width) solid rgba(220, 53, 69, 0.2);
  border-radius: var(--radius-md);
  color: var(--color-negative);
  font-size: var(--text-sm);
}

.auth-submit-btn {
  width: 100%;
  padding: var(--space-4);
  background: var(--color-ink);
  color: var(--main-background-color);
  border: none;
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.auth-submit-btn:hover:not(:disabled) {
  background: var(--color-ink-light);
}

.auth-submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.auth-mode-toggle {
  text-align: center;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: var(--border-width) solid var(--border-color);
  font-size: var(--text-sm);
  color: var(--color-ink-lighter);
}

.auth-toggle-btn {
  padding: var(--space-1) var(--space-2);
  background: none;
  border: none;
  color: var(--color-target);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.auth-toggle-btn:hover {
  color: var(--color-ink);
  text-decoration: underline;
}

@media (min-width: 768px) {
  .auth-form-card {
    padding: var(--space-10);
  }
}