/* ==========================================================================
   Form Component Styles
   Form inputs, labels, and validation states
   ========================================================================== */

/* Form Container */
.form {
  max-width: 600px;
}

.form-wide {
  max-width: 800px;
}

.form-narrow {
  max-width: 400px;
}

/* Form Groups */
.form-group {
  margin-bottom: var(--space-4);
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-row {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.form-row .form-group {
  flex: 1;
  margin-bottom: 0;
}

/* Labels */
.form-label {
  display: block;
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
}

.form-label.required::after {
  content: ' *';
  color: var(--error-500);
}

/* Input Base Styles */
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3);
  font-size: var(--font-size-base);
  font-family: inherit;
  color: var(--text-primary);
  background-color: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px var(--primary-100);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--neutral-400);
}

/* Input Variants */
.form-input-sm {
  padding: var(--space-2);
  font-size: var(--font-size-sm);
}

.form-input-lg {
  padding: var(--space-4);
  font-size: var(--font-size-lg);
}

/* Textarea */
.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-textarea-sm {
  min-height: 80px;
}

.form-textarea-lg {
  min-height: 160px;
}

/* Select */
.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--space-3) center;
  background-repeat: no-repeat;
  background-size: 16px;
  padding-right: calc(var(--space-3) + 24px);
}

/* Checkbox & Radio */
.form-checkbox,
.form-radio {
  width: 16px;
  height: 16px;
  margin-right: var(--space-2);
  accent-color: var(--primary-600);
}

.form-check {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.form-check:last-child {
  margin-bottom: 0;
}

.form-check-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  cursor: pointer;
  margin: 0;
}

/* File Input */
.form-file {
  padding: var(--space-2);
  cursor: pointer;
}

.form-file::-webkit-file-upload-button {
  padding: var(--space-2) var(--space-3);
  margin-right: var(--space-3);
  background-color: var(--neutral-100);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: var(--font-size-sm);
}

/* Input Groups */
.input-group {
  display: flex;
  width: 100%;
}

.input-group .form-input {
  border-radius: 0;
}

.input-group .form-input:first-child {
  border-top-left-radius: var(--radius-md);
  border-bottom-left-radius: var(--radius-md);
}

.input-group .form-input:last-child {
  border-top-right-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
}

.input-group-addon {
  display: flex;
  align-items: center;
  padding: var(--space-3);
  background-color: var(--neutral-100);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.input-group-addon:first-child {
  border-right: none;
  border-top-left-radius: var(--radius-md);
  border-bottom-left-radius: var(--radius-md);
}

.input-group-addon:last-child {
  border-left: none;
  border-top-right-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
}

/* Validation States */
.form-input.is-valid,
.form-textarea.is-valid,
.form-select.is-valid {
  border-color: var(--success-500);
}

.form-input.is-valid:focus,
.form-textarea.is-valid:focus,
.form-select.is-valid:focus {
  box-shadow: 0 0 0 3px var(--success-100);
}

.form-input.is-invalid,
.form-textarea.is-invalid,
.form-select.is-invalid {
  border-color: var(--error-500);
}

.form-input.is-invalid:focus,
.form-textarea.is-invalid:focus,
.form-select.is-invalid:focus {
  box-shadow: 0 0 0 3px var(--error-100);
}

/* Help Text */
.form-help {
  margin-top: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.form-error {
  margin-top: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--error-600);
}

.form-success {
  margin-top: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--success-600);
}

/* Disabled State */
.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
  background-color: var(--neutral-100);
  color: var(--neutral-400);
  cursor: not-allowed;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .form-row {
    flex-direction: column;
    gap: 0;
  }
  
  .form-row .form-group {
    margin-bottom: var(--space-4);
  }
  
  .input-group {
    flex-direction: column;
  }
  
  .input-group .form-input,
  .input-group-addon {
    border-radius: var(--radius-md);
  }
  
  .input-group .form-input:not(:last-child),
  .input-group-addon:not(:last-child) {
    border-bottom: none;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
  }
  
  .input-group .form-input:not(:first-child),
  .input-group-addon:not(:first-child) {
    border-top-left-radius: 0;
    border-top-right-radius: 0;
  }
}