/**
 * 3Syxty Studio — Toggle, Checkbox & Radio Components
 *
 * Beautiful custom form controls with smooth transitions,
 * accessible focus states, and card-style variants.
 */

/* -----------------------------------------------------------------------
   Toggle Switch
   ----------------------------------------------------------------------- */

.toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.toggle-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-track {
    position: relative;
    width: 36px;
    height: 20px;
    background-color: var(--border-default);
    border-radius: var(--radius-full);
    transition: background-color var(--motion-fast);
    flex-shrink: 0;
}

.toggle-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background-color: #FFFFFF;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
    transition: transform var(--motion-fast), box-shadow var(--motion-fast);
}

/* Checked state */
.toggle-input:checked + .toggle-track {
    background-color: var(--accent-primary);
}

.toggle-input:checked + .toggle-track .toggle-thumb {
    transform: translateX(16px);
}

/* Hover */
.toggle:hover .toggle-track {
    background-color: var(--border-strong);
}

.toggle:hover .toggle-input:checked + .toggle-track {
    background-color: var(--accent-primary-hover);
}

/* Focus */
.toggle-input:focus-visible + .toggle-track {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* Disabled */
.toggle-input:disabled + .toggle-track {
    opacity: 0.4;
    cursor: not-allowed;
}

.toggle:has(.toggle-input:disabled) {
    cursor: not-allowed;
}

/* Toggle label */
.toggle-label {
    font: var(--type-body);
    color: var(--text-primary);
}

.toggle-label-desc {
    font: var(--type-body-sm);
    color: var(--text-muted);
}

/* Large toggle variant */
.toggle-lg .toggle-track {
    width: 44px;
    height: 24px;
}

.toggle-lg .toggle-thumb {
    width: 20px;
    height: 20px;
}

.toggle-lg .toggle-input:checked + .toggle-track .toggle-thumb {
    transform: translateX(20px);
}

/* -----------------------------------------------------------------------
   Checkbox
   ----------------------------------------------------------------------- */

.checkbox {
    position: relative;
    display: inline-flex;
    align-items: flex-start;
    gap: var(--space-2);
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.checkbox-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkbox-box {
    position: relative;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-default);
    border-radius: var(--radius-sm);
    background-color: var(--input-bg);
    flex-shrink: 0;
    margin-top: 1px;
    transition: background-color var(--motion-instant),
                border-color var(--motion-instant),
                box-shadow var(--motion-instant);
}

/* Checkmark icon */
.checkbox-box::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 5px;
    width: 5px;
    height: 9px;
    border: solid #FFFFFF;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    transition: transform var(--motion-instant);
}

/* Checked */
.checkbox-input:checked + .checkbox-box {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.checkbox-input:checked + .checkbox-box::after {
    transform: rotate(45deg) scale(1);
}

/* Indeterminate */
.checkbox-input:indeterminate + .checkbox-box {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.checkbox-input:indeterminate + .checkbox-box::after {
    top: 6px;
    left: 3px;
    width: 8px;
    height: 0;
    border-width: 0 0 2px 0;
    transform: rotate(0deg) scale(1);
}

/* Hover */
.checkbox:hover .checkbox-box {
    border-color: var(--border-strong);
}

.checkbox:hover .checkbox-input:checked + .checkbox-box {
    background-color: var(--accent-primary-hover);
    border-color: var(--accent-primary-hover);
}

/* Focus */
.checkbox-input:focus-visible + .checkbox-box {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* Disabled */
.checkbox-input:disabled + .checkbox-box {
    opacity: 0.4;
    cursor: not-allowed;
}

.checkbox:has(.checkbox-input:disabled) {
    cursor: not-allowed;
}

/* Checkbox label */
.checkbox-label {
    font: var(--type-body);
    color: var(--text-primary);
}

/* -----------------------------------------------------------------------
   Radio
   ----------------------------------------------------------------------- */

.radio {
    position: relative;
    display: inline-flex;
    align-items: flex-start;
    gap: var(--space-2);
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.radio-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.radio-circle {
    position: relative;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-default);
    border-radius: 50%;
    background-color: var(--input-bg);
    flex-shrink: 0;
    margin-top: 1px;
    transition: background-color var(--motion-instant),
                border-color var(--motion-instant);
}

/* Inner dot */
.radio-circle::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 8px;
    height: 8px;
    background-color: #FFFFFF;
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    transition: transform var(--motion-instant);
}

/* Checked */
.radio-input:checked + .radio-circle {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.radio-input:checked + .radio-circle::after {
    transform: translate(-50%, -50%) scale(1);
}

/* Hover */
.radio:hover .radio-circle {
    border-color: var(--border-strong);
}

.radio:hover .radio-input:checked + .radio-circle {
    background-color: var(--accent-primary-hover);
    border-color: var(--accent-primary-hover);
}

/* Focus */
.radio-input:focus-visible + .radio-circle {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* Disabled */
.radio-input:disabled + .radio-circle {
    opacity: 0.4;
    cursor: not-allowed;
}

.radio:has(.radio-input:disabled) {
    cursor: not-allowed;
}

.radio-label {
    font: var(--type-body);
    color: var(--text-primary);
}

/* -----------------------------------------------------------------------
   Card-Style Checkbox / Radio
   ----------------------------------------------------------------------- */

.choice-card {
    position: relative;
    display: flex;
    gap: var(--space-3);
    padding: var(--space-4);
    background-color: var(--surface-secondary);
    border: 2px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: border-color var(--motion-instant),
                background-color var(--motion-instant),
                box-shadow var(--motion-instant);
}

.choice-card:hover {
    border-color: var(--border-default);
    background-color: var(--surface-tertiary);
}

.choice-card:has(.checkbox-input:checked),
.choice-card:has(.radio-input:checked) {
    border-color: var(--accent-primary);
    background-color: var(--accent-primary-subtle);
    box-shadow: 0 0 0 1px var(--accent-primary);
}

.choice-card:has(.checkbox-input:focus-visible),
.choice-card:has(.radio-input:focus-visible) {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

.choice-card-content {
    flex: 1;
}

.choice-card-title {
    font: var(--type-body);
    font-weight: 500;
    color: var(--text-primary);
}

.choice-card-desc {
    font: var(--type-body-sm);
    color: var(--text-muted);
    margin-top: var(--space-1);
}

/* Radio/Checkbox group layout */
.choice-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.choice-group-horizontal {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-2);
}