/* ============================================
   Switch Component - Unified Switch/Toggle
   ============================================ */

.switch {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    user-select: none;
}

.switch__container {
    display: grid;
    width: 100%;
    gap: var(--spacing-2xs);
    background-color: var(--color-surface);
    border: var(--border-width-hairline) solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-2xs);
    position: relative;
    transition: background-color var(--duration-base) var(--easing-standard),
                border-color var(--duration-base) var(--easing-standard);
}

/* Switch Sizes */
.switch__container--sm {
    padding: var(--spacing-2xs);
    gap: var(--spacing-2xs);
}

.switch__container--md {
    padding: var(--spacing-2xs);
    gap: var(--spacing-2xs);
}

.switch__container--lg {
    padding: var(--spacing-xs);
    gap: var(--spacing-xs);
}

/* Switch Variants */
.switch__container--filled {
    background-color: var(--color-surface-elevated);
    border-color: var(--color-border-dark);
}

.switch__container--outlined {
    background-color: transparent;
    border-width: var(--border-width);
}

/* Input (Hidden) */
.switch__input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    margin: 0;
    padding: 0;
}

/* Label */
.switch__label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-medium);
    text-align: center;
    cursor: pointer;
    background-color: transparent;
    border-radius: var(--radius-xs);
    color: var(--color-text-muted);
    transition: background-color var(--duration-fast) var(--easing-standard),
                color var(--duration-fast) var(--easing-standard),
                box-shadow var(--duration-fast) var(--easing-standard),
                font-weight var(--duration-fast) var(--easing-standard);
    position: relative;
    min-height: 32px;
    line-height: 1.5;
    white-space: nowrap;
}

.switch__container--sm .switch__label {
    padding: var(--spacing-2xs) var(--spacing-xs);
    font-size: var(--font-size-tiny);
    min-height: 28px;
}

.switch__container--lg .switch__label {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-body);
    min-height: 40px;
}

/* Label Hover */
.switch__label:hover {
    background-color: var(--color-surface-hover);
    color: var(--color-text);
}

/* Label Active/Checked */
.switch__input:checked + .switch__label {
    background-color: var(--color-primary);
    color: var(--color-primary-contrast);
    font-weight: var(--font-weight-semibold);
    box-shadow: var(--shadow-xs);
}

.switch__input:checked + .switch__label:hover {
    background-color: var(--color-primary-hover);
    color: var(--color-primary-contrast);
}

/* Focus State */
.switch__input:focus-visible + .switch__label {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Active State */
.switch__input:active + .switch__label {
    box-shadow: var(--shadow-xs);
}

/* Disabled State */
.switch__input:disabled + .switch__label {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Switch Text */
.switch__text {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
}

/* Switch Icon */
.switch__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 16px;
    height: 16px;
}

.switch__container--sm .switch__icon {
    width: 14px;
    height: 14px;
}

.switch__container--lg .switch__icon {
    width: 20px;
    height: 20px;
}

.switch__icon svg {
    width: 100%;
    height: 100%;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.switch__icon--left {
    margin-right: var(--spacing-2xs);
}

.switch__icon--right {
    margin-left: var(--spacing-2xs);
}

/* Grid Columns - Auto based on number of options */
.switch__container {
    grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
}

/* Specific column counts */
.switch__container[data-columns="2"] {
    grid-template-columns: repeat(2, 1fr);
}

.switch__container[data-columns="3"] {
    grid-template-columns: repeat(3, 1fr);
}

.switch__container[data-columns="4"] {
    grid-template-columns: repeat(4, 1fr);
}

.switch__container[data-columns="5"] {
    grid-template-columns: repeat(5, 1fr);
}

/* Responsive */
@media (max-width: 768px) {
    .switch__label {
        padding: var(--spacing-2xs) var(--spacing-xs);
        font-size: var(--font-size-tiny);
        min-height: 28px;
    }
    
    .switch__container--lg .switch__label {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-small);
        min-height: 32px;
    }
    
    .switch__text {
        font-size: var(--font-size-tiny);
    }
    
    .switch__icon {
        width: 14px;
        height: 14px;
    }
}

/* Animation for smooth transitions */
@keyframes switchActive {
    0% {
        transform: scale(0.95);
    }
    100% {
        transform: scale(1);
    }
}

.switch__input:checked + .switch__label {
    animation: switchActive 0.15s ease-out;
}