/* ==========================================================================
   AUTHENTICATION LAYOUT (Login/Register)
   ========================================================================== */

/* Main wrapper to push footer down and center content */
.auth-main {
  min-height: calc(100vh - 6.5rem - 25.375rem);
  display: flex;
  flex-direction: column;
  padding: 2rem 4rem;
  max-width: 1440px;
  margin: 0 auto;
  position: relative;
}

/* Back button container */
.auth-back-container {
  position: absolute;
  top: 2rem;
  left: 4rem;
}

/* Authentication Content */
.auth-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  padding: 3rem 0;
  width: 100%;
}

.auth-title-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: fit-content;
  margin-bottom: 2.5rem;
}

.auth-title {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-title-md);
  font-weight: var(--font-weight-normal);
  color: var(--color-neutral-900);
  margin-bottom: 0.75rem;
  text-align: center;
}

.auth-divider-top {
  width: 100%;
  height: 1px;
  background-color: var(--color-primary-700);
}

/* Auth Card */
.auth-card {
  background-color: var(--color-neutral-000);
  border: 1px solid var(--color-primary-700);
  border-radius: var(--border-radius-md);
  box-shadow: 0 0 0.5rem rgba(0, 0, 0, 0.25);
  width: 100%;
  max-width: 34.125rem; /* ~546px */
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.auth-form-group {
  width: 100%;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.auth-form-group .input-label {
  font-size: var(--font-size-subhead);
}

.auth-form-group .input-field {
  width: 100%;
}

.auth-form-group .input-helper {
  font-size: var(--font-size-caption);
  color: var(--color-neutral-600);
  margin-top: -0.25rem;
}

.auth-submit-btn {
  margin-top: 1rem;
  margin-bottom: 2rem;
  width: 12.375rem;
}

/* Form Validation States */
.input-field.is-invalid {
  border-color: var(--color-danger-500);
}

.input-field.is-invalid:focus {
  box-shadow: 0 0 0 0.1875rem var(--color-danger-500-alpha-08);
}

.error-message {
  color: var(--color-danger-500);
  font-size: var(--font-size-caption);
  margin-top: 0.25rem;
  display: none;
}

.input-field.is-invalid ~ .error-message {
  display: block;
}

/* Register Prompt */
.auth-divider-bottom {
  width: 75%;
  height: 1px;
  background-color: var(--color-primary-700);
  opacity: 0.5;
  margin-bottom: 1.5rem;
}

.auth-register-prompt {
  text-align: center;
  font-size: var(--font-size-subhead);
  font-weight: var(--font-weight-light);
  line-height: 1.5;
}

.auth-register-prompt a {
  color: var(--color-primary-300);
  font-weight: var(--font-weight-normal);
  text-decoration: none;
  display: block;
  font-size: var(--font-size-title-subhead);
  margin-top: 0.5rem;
}

.auth-register-prompt a:hover {
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 1024px) {
  .auth-main {
    padding: 2rem;
  }
  
  .auth-back-container {
    left: 2rem;
    position: static;
    margin-bottom: 2rem;
  }
}

@media (max-width: 768px) {
  .auth-main {
    padding: 1.5rem 1rem;
  }
  
  .auth-card {
    padding: 1.5rem 1rem;
  }

  /* Prevent iOS Mobile Safari auto-zoom on input focus */
  .input-field {
    font-size: 16px !important;
  }
}