/* Form Effects - Reusable CSS for form interactions */

/* Shake animation */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-10px); }
    20%, 40%, 60%, 80% { transform: translateX(10px); }
  }
  
  .shake {
    animation: shake 0.82s cubic-bezier(.36,.07,.19,.97) both;
  }
  
  /* Form error messaging */
  .form-error {
    color: #dc3545;
    font-size: 14px;
    margin-top: 8px;
    display: none;
  }
  
  /* Placeholder styling */
  ::placeholder {
    color: #9EA0A5;
    opacity: 1;
  }
  
  :-ms-input-placeholder {
    color: #9EA0A5;
  }
  
  ::-ms-input-placeholder {
    color: #9EA0A5;
  }
  
  /* Input focus states */
  .form-input input:focus {
    border-color: #6c757d;
    outline: none;
  }
  
  /* Form validation styling */
  .form-input input.is-invalid {
    border-color: #dc3545;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
  }
  
  .form-input input.is-valid {
    border-color: #198754;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23198754' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
  }
  
  /* Form submission indicator */
  .btn-submitting {
    position: relative;
    pointer-events: none;
    opacity: 0.8;
  }
  
  .btn-submitting:after {
    content: "";
    display: inline-block;
    width: 1rem;
    height: 1rem;
    vertical-align: text-bottom;
    border: 0.2em solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spinner-border .75s linear infinite;
    position: absolute;
    right: 1rem;
    top: calc(50% - 0.5rem);
  }
  
  @keyframes spinner-border {
    to { transform: rotate(360deg); }
  }