/* Authentication Styles */

/* Modal Styles */
.modal-content {
  border: none;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
}

.modal-header {
  border-bottom: 1px solid var(--gray-200);
  padding: var(--spacing-xl);
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--gray-900);
}

.modal-body {
  padding: var(--spacing-xl);
}

.modal-footer {
  border-top: 1px solid var(--gray-200);
  padding: var(--spacing-lg) var(--spacing-xl);
}

/* Form Styles */
.form-floating {
  position: relative;
}

.form-floating > .form-control {
  height: calc(3.5rem + 2px);
  padding: 1rem 0.75rem;
}

.form-floating > label {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  padding: 1rem 0.75rem;
  pointer-events: none;
  border: 1px solid transparent;
  transform-origin: 0 0;
  transition: opacity 0.1s ease-in-out, transform 0.1s ease-in-out;
}

.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label {
  opacity: 0.65;
  transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
}

/* Social Login Buttons */
.btn-google {
  background-color: #4285f4;
  color: white;
  border: none;
}

.btn-google:hover {
  background-color: #3367d6;
  color: white;
}

.btn-google i {
  margin-right: var(--spacing-sm);
}

/* Form Validation */
.is-invalid {
  border-color: var(--danger-color) !important;
}

.invalid-feedback {
  display: block;
  width: 100%;
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--danger-color);
}

.is-valid {
  border-color: var(--success-color) !important;
}

.valid-feedback {
  display: block;
  width: 100%;
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--success-color);
}

/* Password Strength Indicator */
.password-strength {
  margin-top: var(--spacing-sm);
}

.strength-bar {
  height: 4px;
  background-color: var(--gray-300);
  border-radius: 2px;
  overflow: hidden;
  margin-top: var(--spacing-xs);
}

.strength-fill {
  height: 100%;
  transition: width 0.3s ease, background-color 0.3s ease;
  width: 0%;
}

.strength-weak .strength-fill {
  width: 25%;
  background-color: var(--danger-color);
}

.strength-fair .strength-fill {
  width: 50%;
  background-color: var(--warning-color);
}

.strength-good .strength-fill {
  width: 75%;
  background-color: var(--info-color);
}

.strength-strong .strength-fill {
  width: 100%;
  background-color: var(--success-color);
}

/* Loading States */
.btn-loading {
  position: relative;
  color: transparent !important;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* Alert Styles */
.alert {
  border: none;
  border-radius: var(--border-radius);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.alert-success {
  background-color: #d4edda;
  color: #155724;
}

.alert-danger {
  background-color: #f8d7da;
  color: #721c24;
}

.alert-warning {
  background-color: #fff3cd;
  color: #856404;
}

.alert-info {
  background-color: #d1ecf1;
  color: #0c5460;
}

/* Form Groups */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--gray-700);
}

.form-group .form-control {
  width: 100%;
}

/* Checkbox and Radio Styles */
.form-check {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.form-check-input {
  margin-right: var(--spacing-sm);
  margin-top: 0;
}

.form-check-label {
  margin-bottom: 0;
  font-size: var(--font-size-sm);
  color: var(--gray-600);
}

.form-check-label a {
  color: var(--primary-color);
  text-decoration: none;
}

.form-check-label a:hover {
  text-decoration: underline;
}

/* Divider */
.divider {
  position: relative;
  text-align: center;
  margin: var(--spacing-xl) 0;
}

.divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background-color: var(--gray-300);
}

.divider span {
  background-color: var(--white);
  padding: 0 var(--spacing-md);
  color: var(--gray-500);
  font-size: var(--font-size-sm);
}

/* Link Styles */
.auth-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

.auth-link:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 576px) {
  .modal-dialog {
    margin: var(--spacing-md);
  }
  
  .modal-header,
  .modal-body {
    padding: var(--spacing-lg);
  }
  
  .btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  .modal-content {
    background-color: var(--gray-800);
    color: var(--white);
  }
  
  .modal-header {
    border-bottom-color: var(--gray-700);
  }
  
  .modal-title {
    color: var(--white);
  }
  
  .form-control {
    background-color: var(--gray-700);
    border-color: var(--gray-600);
    color: var(--white);
  }
  
  .form-control:focus {
    background-color: var(--gray-700);
    border-color: var(--primary-color);
    color: var(--white);
  }
  
  .form-label {
    color: var(--gray-300);
  }
  
  .form-check-label {
    color: var(--gray-400);
  }
}