/* Pill Button Components for Radio and Checkbox Inputs */
/* Integrates with existing QnA app design system */

:root {
    /* Pill Button Variables - using existing color scheme */
    --pill-button-border-radius: 20px;
    --pill-button-padding: 8px 16px;
    --pill-button-font-size: 14px;
    --pill-button-font-weight: 500;
    --pill-button-transition: all 0.2s ease;

    /* Default state colors */
    --pill-button-background: white;
    --pill-button-border: 2px solid #e1e5e9;
    --pill-button-text-color: var(--text-color-primary);

    /* Hover state colors */
    --pill-button-background-hover: #f8f9fa;
    --pill-button-border-hover: 2px solid #ced4da;

    /* Selected state colors - using app primary colors */
    --pill-button-background-selected: var(--color-primary);
    --pill-button-border-selected: 2px solid var(--color-primary);
    --pill-button-text-color-selected: var(--button-text-color-primary);

    /* Selected hover state */
    --pill-button-background-selected-hover: var(--color-secondary);
    --pill-button-border-selected-hover: 2px solid var(--color-secondary);

    /* Focus state */
    --pill-button-focus-outline: 2px solid var(--focus-default-border-color);
    --pill-button-focus-outline-offset: 2px;

    /* Disabled state */
    --pill-button-background-disabled: #f5f5f5;
    --pill-button-border-disabled: 2px solid #dee2e6;
    --pill-button-text-color-disabled: var(--button-disabled-background-color-primary);
}

/* Base pill button container */
.pill-button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 10px 0;
}

/* Base pill button styling */
.pill-button {
    position: relative;
    display: inline-block;
    cursor: pointer;
    font-family: inherit;
    font-size: var(--pill-button-font-size);
    font-weight: var(--pill-button-font-weight);
    line-height: 1.4;
    padding: var(--pill-button-padding);
    border-radius: var(--pill-button-border-radius);
    border: var(--pill-button-border);
    background: var(--pill-button-background);
    color: var(--pill-button-text-color);
    transition: var(--pill-button-transition);
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

/* Hide the actual input */
.pill-button input[type="radio"],
.pill-button input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 0;
    height: 0;
}

/* Hover state */
.pill-button:hover {
    background: var(--pill-button-background-hover);
    border: var(--pill-button-border-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Focus state for accessibility */
.pill-button:focus-within,
.pill-button input:focus + .pill-button-label {
    outline: var(--pill-button-focus-outline);
    outline-offset: var(--pill-button-focus-outline-offset);
}

/* Selected state */
.pill-button:has(input:checked),
.pill-button.selected {
    background: var(--pill-button-background-selected) !important;
    border: var(--pill-button-border-selected) !important;
    color: var(--pill-button-text-color-selected) !important;
    font-weight: 600;
}

/* Selected hover state */
.pill-button:has(input:checked):hover,
.pill-button.selected:hover {
    background: var(--pill-button-background-selected-hover);
    border: var(--pill-button-border-selected-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(212, 55, 49, 0.3);
}

/* Disabled state */
.pill-button.disabled {
    background: var(--pill-button-background-disabled);
    border: var(--pill-button-border-disabled);
    color: var(--pill-button-text-color-disabled);
    cursor: not-allowed;
    opacity: 0.6;
    transform: none !important;
    box-shadow: none !important;
}

.pill-button.disabled:hover,
.pill-button:has(input:disabled) + .pill-button-label:hover {
    background: var(--pill-button-background-disabled);
    border: var(--pill-button-border-disabled);
}

/* Label styling when used with hidden inputs */
.pill-button-label {
    display: block;
    cursor: pointer;
    margin: 0;
    padding: 0;
    font-weight: inherit;
    color: inherit;
}

/* Size variants */
.pill-button.pill-button-sm {
    --pill-button-padding: 6px 12px;
    --pill-button-font-size: 12px;
    --pill-button-border-radius: 16px;
}

.pill-button.pill-button-lg {
    --pill-button-padding: 12px 20px;
    --pill-button-font-size: 16px;
    --pill-button-border-radius: 24px;
}

/* Color variants */
.pill-button.pill-button-secondary {
    --pill-button-background-selected: var(--color-secondary);
    --pill-button-border-selected: 2px solid var(--color-secondary);
    --pill-button-background-selected-hover: #6a2422;
    --pill-button-border-selected-hover: 2px solid #6a2422;
}

.pill-button.pill-button-success {
    --pill-button-background-selected: var(--color-success);
    --pill-button-border-selected: 2px solid var(--color-success);
    --pill-button-background-selected-hover: darkgreen;
    --pill-button-border-selected-hover: 2px solid darkgreen;
}

/* Multi-select checkboxes - add check icon */
.pill-button input[type="checkbox"]:checked + .pill-button-label::before {
    content: " ";
    font-weight: bold;
    margin-right: 4px;
}

/* Radio button groups - ensure only one selection */
.pill-button-group.radio-group .pill-button input[type="radio"] {
    margin: 0;
}

/* Responsive behavior */
@media (max-width: 600px) {
    .pill-button-group {
        gap: 6px;
    }

    .pill-button {
        --pill-button-padding: 6px 12px;
        --pill-button-font-size: 13px;
    }
}

/* Integration with existing form styles */
.pill-button-group.form-field {
    margin: 10px 0;
}

/* Error state integration */
.pill-button-group.error .pill-button {
    --pill-button-border: 2px solid var(--color-error);
}

.pill-button-group.error .pill-button:hover {
    --pill-button-border-hover: 2px solid var(--color-error);
}

/* Loading state */
.pill-button.loading {
    pointer-events: none;
    opacity: 0.7;
}

.pill-button.loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 12px;
    height: 12px;
    margin: -6px 0 0 -6px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Animation for check mark appearance */
.pill-button input[type="checkbox"]:checked + .pill-button-label::before {
    animation: checkmark-appear 0.2s ease-out;
}

@keyframes checkmark-appear {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}