/* =============================================================================
   FORM COMPONENTS — lib/styles/components/forms.css
   Covers: TextInput, SelectDropdown, CheckboxGroup, RadioGroup, FormValidator
   Aligned with: Total Solutions Brand Guidelines (Light Mode Only, Calm & Neutral)
   ============================================================================= */

/* =============================================================================
   TEXT INPUT
   Spec: Background #FFFFFF | Border 1px #E2E4E8 | Border-radius 8px
         Padding 12px 14px | Font-size 16px | Min-height 44px
         Focus: border #0056D2 (Action Blue), box-shadow
   ============================================================================= */

.form-field {
    display: flex;
    flex-direction: column;
    gap: 0;
    width: 100%;
}

.form-field__label {
    display: block;
    font-family: 'Inter', Roboto, sans-serif;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary, #1A1C20);
    margin-bottom: 8px;
    line-height: 1.4;
    cursor: default;
    
    /* Smooth color transition without changing font-weight to prevent layout jumping */
    transition: color var(--motion-transition-interactive);
}

/* Subtle focus state feedback for labels */
.form-field:focus-within .form-field__label:not(.form-field__label--error) {
    color: var(--color-primary, #0056D2);
}

.form-field__label--error {
    color: var(--color-danger, #D12930);
}

.form-field__required {
    color: var(--color-danger, #D12930); /* Critical Crimson */
    font-weight: 700;
    margin-left: 2px;
}

.form-field__helper {
    display: block;
    font-family: 'Inter', Roboto, sans-serif;
    font-size: 12px;
    font-weight: 400;
    color: var(--color-text-muted, #4A4D55); /* Secondary Text */
    margin-bottom: 6px;
    line-height: 1.5;
}

.form-field__input-wrapper {
    position: relative;
    display: flex;
    align-items: stretch;
}

.form-field__input {
    width: 100%;
    min-height: 44px;
    padding: 12px 14px;
    background-color: var(--color-surface-base, #FFFFFF);
    border: 1px solid var(--color-border-default, #E2E4E8);
    border-radius: var(--radius-md, 8px);
    font-family: 'Inter', Roboto, sans-serif;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-text-primary, #1A1C20);
    box-sizing: border-box;
    
    /* Hooked into structured motion tokens for snappy, smooth transitions */
    transition: border-color var(--motion-transition-interactive), 
                box-shadow var(--motion-transition-interactive), 
                background-color var(--motion-transition-interactive);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
}

.form-field__input::placeholder {
    color: var(--color-text-muted, #4A4D55);
    opacity: 0.7;
    font-weight: 400;
}

.form-field--multiline .form-field__input {
    min-height: 120px;
    resize: vertical;
    padding-right: 14px;
}

.form-field__input:focus {
    border-color: var(--color-primary, #0056D2); /* Action Blue */
    box-shadow: 0 0 0 3px rgba(0, 86, 210, 0.10);
}

/* Validation states */
.form-field__input--error {
    border-color: var(--color-danger, #D12930); /* Critical Crimson */
}

.form-field__input--error:focus {
    border-color: var(--color-danger, #D12930);
    box-shadow: 0 0 0 3px rgba(209, 41, 48, 0.10);
}

.form-field__input--success {
    border-color: var(--color-success, #0E793C); /* Compliance Green */
    padding-right: 42px;
}

.form-field__input--success:focus {
    border-color: var(--color-success, #0E793C);
    box-shadow: 0 0 0 3px rgba(14, 121, 60, 0.10);
}

.animate-form-icon {
    animation: form-error-fade var(--motion-duration-fast, 200ms) var(--motion-ease-out, ease-out) forwards;
}

.form-field__success-icon {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-success, #0E793C); /* Compliance Green */
    font-size: 16px;
    pointer-events: none;
    line-height: 1;
}

.form-field--multiline .form-field__success-icon {
    top: 14px;
    transform: none;
}

.form-field--disabled .form-field__input {
    background-color: var(--color-surface-subtle, #F4F5F7);
    color: var(--color-text-muted, #4A4D55);
    cursor: not-allowed;
    border-color: var(--color-border-default, #E2E4E8);
}

.form-field--disabled .form-field__input::placeholder {
    opacity: 0.5;
}

.form-field--disabled .form-field__label {
    color: var(--color-text-muted, #4A4D55);
    cursor: default;
}

.form-field__char-counter {
    display: block;
    font-family: 'Inter', Roboto, sans-serif;
    font-size: 12px;
    font-weight: 400;
    color: var(--color-text-muted, #4A4D55);
    text-align: right;
    margin-top: 4px;
    line-height: 1.4;
}

.form-field--error .form-field__char-counter {
    color: var(--color-danger, #D12930);
}

/* Fast fade-in for inline error messages to prevent jitter on rapid re-validation */
@keyframes form-error-fade {
    from { opacity: 0; }
    to { opacity: 1; }
}

.form-error-anim {
    animation: form-error-fade var(--motion-duration-fast, 200ms) var(--motion-ease-out, ease-out) forwards;
}

.form-field .message--inline {
    margin-top: 6px;
    font-size: 12px;
    color: var(--color-danger, #D12930);
}

/* =============================================================================
   SELECT DROPDOWN
   ============================================================================= */

.form-field__select-wrapper {
    position: relative;
    display: flex;
    align-items: stretch;
}

.form-field__select-chevron {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted, #4A4D55); 
    font-size: 13px;
    pointer-events: none;
    line-height: 1;
    transition: transform var(--motion-transition-interactive), color var(--motion-transition-interactive);
}

.form-field__select:focus ~ .form-field__select-chevron {
    transform: translateY(-50%) rotate(180deg);
    color: var(--color-primary, #0056D2);
}

.form-field__select {
    width: 100%;
    min-height: 44px;
    padding: 12px 42px 12px 14px;
    background-color: var(--color-surface-base, #FFFFFF);
    border: 1px solid var(--color-border-default, #E2E4E8);
    border-radius: var(--radius-md, 8px);
    font-family: 'Inter', Roboto, sans-serif;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-text-primary, #1A1C20);
    box-sizing: border-box;
    cursor: pointer;
    transition: border-color var(--motion-transition-interactive), box-shadow var(--motion-transition-interactive);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.form-field__select--placeholder {
    color: var(--color-text-muted, #4A4D55);
    opacity: 0.7;
}

.form-field__option {
    color: var(--color-text-primary, #1A1C20);
    background-color: var(--color-surface-base, #FFFFFF);
    font-size: 16px;
}

.form-field__select:focus {
    border-color: var(--color-primary, #0056D2);
    box-shadow: 0 0 0 3px rgba(0, 86, 210, 0.10);
}

.form-field__select--error {
    border-color: var(--color-danger, #D12930);
}

.form-field__select--error:focus {
    border-color: var(--color-danger, #D12930);
    box-shadow: 0 0 0 3px rgba(209, 41, 48, 0.10);
}

.form-field--error .form-field__select-chevron {
    color: var(--color-danger, #D12930);
}

.form-field__select--success {
    border-color: var(--color-success, #0E793C);
}

.form-field__select--success:focus {
    border-color: var(--color-success, #0E793C);
    box-shadow: 0 0 0 3px rgba(14, 121, 60, 0.10);
}

.form-field--success .form-field__select-chevron {
    color: var(--color-success, #0E793C);
}

.form-field--disabled .form-field__select {
    background-color: var(--color-surface-subtle, #F4F5F7);
    color: var(--color-text-muted, #4A4D55);
    cursor: not-allowed;
    border-color: var(--color-border-default, #E2E4E8);
}

/* =============================================================================
   CHECKBOX GROUP
   ============================================================================= */

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    border: none;
    padding: 0;
    margin: 0;
}

.checkbox-group--single {
    gap: 0;
}

.checkbox-group__legend {
    font-family: 'Inter', Roboto, sans-serif;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary, #1A1C20);
    margin-bottom: 10px;
    padding: 0;
    line-height: 1.4;
}

.checkbox__item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    position: relative;
    cursor: pointer;
    min-height: 24px;
}

.checkbox__item--disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.checkbox__input {
    position: absolute;
    opacity: 0;
    width: 24px;
    height: 24px;
    margin: 0;
    cursor: pointer;
    z-index: 1;
}

.checkbox__input:disabled {
    cursor: not-allowed;
}

.checkbox__indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 2px;
    background-color: var(--color-surface-base, #FFFFFF);
    border: 2px solid var(--color-border-default, #E2E4E8);
    border-radius: 4px;
    transition: background-color var(--motion-transition-interactive), 
                border-color var(--motion-transition-interactive), 
                box-shadow var(--motion-transition-interactive);
    pointer-events: none;
}

.checkbox__indicator--checked {
    background-color: var(--color-primary, #0056D2);
    border-color: var(--color-primary, #0056D2);
}

.checkbox__item:hover:not(.checkbox__item--disabled) .checkbox__indicator {
    border-color: var(--color-brand-trust-navy, #0F294A);
}

.checkbox__input:focus-visible ~ .checkbox__indicator {
    outline: 3px solid rgba(0, 86, 210, 0.4);
    outline-offset: 3px;
}

.checkbox__checkmark {
    font-size: 11px;
    color: #FFFFFF;
    line-height: 1;
}

.checkbox__label {
    font-family: 'Inter', Roboto, sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: var(--color-text-primary, #1A1C20);
    line-height: 1.6;
    cursor: pointer;
    flex: 1;
}

.checkbox__item--disabled .checkbox__label {
    cursor: not-allowed;
    color: var(--color-text-muted, #4A4D55);
}

.checkbox__label-link {
    color: var(--color-primary, #0056D2);
    font-weight: 500;
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color var(--motion-transition-interactive);
}

.checkbox__label-link:hover {
    color: var(--color-brand-trust-navy, #0F294A);
}

.checkbox__label-link:focus-visible {
    outline: 2px solid var(--color-primary, #0056D2);
    outline-offset: 2px;
    border-radius: 2px;
}

.checkbox-group--error .checkbox__indicator {
    border-color: var(--color-danger, #D12930);
}

/* =============================================================================
   RADIO GROUP
   ============================================================================= */

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0;
    border: none;
    padding: 0;
    margin: 0;
}

.radio-group--disabled {
    opacity: 0.5;
}

.radio-group__legend {
    font-family: 'Inter', Roboto, sans-serif;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary, #1A1C20);
    margin-bottom: 10px;
    padding: 0;
    line-height: 1.4;
}

.radio-group__items {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.radio-group__items--horizontal {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 16px 24px;
}

.radio__item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    position: relative;
    cursor: pointer;
    min-height: 24px;
}

.radio__item--disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

.radio__input {
    position: absolute;
    opacity: 0;
    width: 24px;
    height: 24px;
    margin: 0;
    cursor: pointer;
    z-index: 1;
}

.radio__input:disabled {
    cursor: not-allowed;
}

.radio__indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 2px;
    background-color: var(--color-surface-base, #FFFFFF);
    border: 2px solid var(--color-border-default, #E2E4E8);
    border-radius: 50%;
    transition: background-color var(--motion-transition-interactive), 
                border-color var(--motion-transition-interactive), 
                box-shadow var(--motion-transition-interactive);
    pointer-events: none;
}

.radio__item:hover:not(.radio__item--disabled) .radio__indicator {
    border-color: var(--color-brand-trust-navy, #0F294A);
}

.radio__indicator--checked {
    border-color: var(--color-primary, #0056D2);
}

.radio__input:focus-visible ~ .radio__indicator {
    outline: 3px solid rgba(0, 86, 210, 0.4);
    outline-offset: 3px;
}

.radio__dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--color-primary, #0056D2);
    pointer-events: none;
    flex-shrink: 0;
    opacity: 0;
    transition: opacity var(--motion-transition-interactive);
}

.radio__indicator--checked .radio__dot {
    opacity: 1;
}

.radio__label {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-family: 'Inter', Roboto, sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: var(--color-text-primary, #1A1C20);
    line-height: 1.5;
    cursor: pointer;
    flex: 1;
}

.radio__item--disabled .radio__label {
    cursor: not-allowed;
    color: var(--color-text-muted, #4A4D55);
}

.radio__item--selected .radio__label {
    color: var(--color-brand-trust-navy, #0F294A);
    font-weight: 500;
}

.radio__sublabel {
    font-size: 12px;
    font-weight: 400;
    color: var(--color-text-muted, #4A4D55);
    line-height: 1.4;
}

.radio-group--error .radio__indicator {
    border-color: var(--color-danger, #D12930);
}

.radio-group--error .radio__item:hover:not(.radio__item--disabled) .radio__indicator {
    border-color: var(--color-danger, #D12930);
}

/* =============================================================================
   FORM VALIDATOR
   ============================================================================= */

.form-validator {
    position: relative;
    background-color: rgba(209, 41, 48, 0.05); /* Soft Critical Crimson */
    border: 1px solid rgba(209, 41, 48, 0.20);
    border-radius: 8px;
    padding: 16px 20px;
    margin-bottom: 24px;
    box-sizing: border-box;
    width: 100%;
    animation: dd-validator-slide-in var(--motion-duration-medium, 300ms) var(--motion-ease-in-out, ease-out) forwards;
}

.form-validator--hidden {
    display: none;
}

@keyframes dd-validator-slide-in {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-validator__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.form-validator__count {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: 'Inter', Roboto, sans-serif;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-danger, #D12930);
    line-height: 1.4;
}

.form-validator__header-icon {
    font-size: 16px;
    color: var(--color-danger, #D12930);
    flex-shrink: 0;
    line-height: 1;
}

.form-validator__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 8px;
    background: transparent;
    border: 1px solid rgba(209, 41, 48, 0.30);
    border-radius: 4px;
    cursor: pointer;
    color: var(--color-danger, #D12930);
    font-size: 12px;
    transition: background-color var(--motion-transition-interactive), border-color var(--motion-transition-interactive);
    flex-shrink: 0;
}

.form-validator__toggle:hover {
    background-color: rgba(209, 41, 48, 0.10);
}

.form-validator__toggle:focus-visible {
    outline: 3px solid rgba(0, 86, 210, 0.4);
    outline-offset: 2px;
}

.form-validator__error-list {
    list-style: none;
    padding: 0;
    margin: 12px 0 0 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow: hidden;
    animation: dd-list-expand var(--motion-duration-fast, 200ms) var(--motion-ease-out, ease-out) forwards;
}

@keyframes dd-list-expand {
    from { opacity: 0; }
    to { opacity: 1; }
}

.form-validator__error-list--collapsed {
    display: none;
}

.form-validator__error-item {
    display: flex;
    align-items: flex-start;
}

.form-validator__error-message {
    display: inline-flex;
    align-items: flex-start;
    gap: 8px;
    font-family: 'Inter', Roboto, sans-serif;
    font-size: 13px;
    font-weight: 400;
    color: var(--color-danger, #D12930);
    line-height: 1.5;
}

.form-validator__error-bullet {
    font-size: 10px;
    margin-top: 4px;
    color: var(--color-danger, #D12930);
    flex-shrink: 0;
    line-height: 1;
}

.form-validator__error-link {
    text-decoration: none;
    color: inherit;
    width: 100%;
}

.form-validator__error-link:hover .form-validator__error-message {
    text-decoration: underline;
    text-underline-offset: 2px;
}

.form-validator__error-link:focus-visible {
    outline: 2px solid rgba(0, 86, 210, 0.4);
    outline-offset: 2px;
    border-radius: 2px;
}

.form-validator__dismiss {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    color: var(--color-danger, #D12930);
    font-size: 14px;
    opacity: 0.70;
    transition: opacity var(--motion-transition-interactive), background-color var(--motion-transition-interactive);
}

.form-validator__dismiss:hover {
    opacity: 1;
    background-color: rgba(209, 41, 48, 0.10);
}

.form-validator__dismiss:focus-visible {
    outline: 3px solid rgba(0, 86, 210, 0.4);
    outline-offset: 2px;
    opacity: 1;
}

.form-validator:has(.form-validator__dismiss) .form-validator__header {
    padding-right: 28px;
}