/* assets/css/related-questions.css */
/* Google PAA-style Accordion - Modern, Accessible, Responsive */

/* CSS Custom Properties for theming and dark mode */
:root {
    --paa-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --paa-border-color: #dadce0;
    --paa-border-radius: 8px;
    --paa-bg-primary: #ffffff;
    --paa-bg-hover: #f8f9fa;
    --paa-bg-active: #f1f3f4;
    --paa-text-primary: #202124;
    --paa-text-secondary: #5f6368;
    --paa-text-answer: #3c4043;
    --paa-chevron-color: #5f6368;
    --paa-shadow: 0 1px 6px rgba(32, 33, 36, 0.1);
    --paa-shadow-hover: 0 1px 6px rgba(32, 33, 36, 0.18);
    --paa-focus-ring: rgba(26, 115, 232, 0.4);
    --paa-transition-duration: 0.25s;
    --paa-transition-easing: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --paa-border-color: #3c4043;
        --paa-bg-primary: #202124;
        --paa-bg-hover: #292a2d;
        --paa-bg-active: #35363a;
        --paa-text-primary: #e8eaed;
        --paa-text-secondary: #9aa0a6;
        --paa-text-answer: #bdc1c6;
        --paa-chevron-color: #9aa0a6;
        --paa-shadow: 0 1px 6px rgba(0, 0, 0, 0.3);
        --paa-shadow-hover: 0 1px 6px rgba(0, 0, 0, 0.5);
        --paa-focus-ring: rgba(138, 180, 248, 0.4);
    }
}

/* Main container */
.related-questions {
    margin: 2rem 0;
    font-family: var(--paa-font-family);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Title styling - Google-like */
.related-questions__title {
    margin: 0 0 1rem 0;
    padding: 0;
    font-size: 1.125rem;
    font-weight: 400;
    color: var(--paa-text-primary);
    line-height: 1.5;
}

/* Accordion container */
.paa-accordion {
    border: 1px solid var(--paa-border-color);
    border-radius: var(--paa-border-radius);
    background-color: var(--paa-bg-primary);
    box-shadow: var(--paa-shadow);
    overflow: hidden;
}

/* Individual accordion item */
.paa-accordion__item {
    border-bottom: 1px solid var(--paa-border-color);
}

.paa-accordion__item:last-child {
    border-bottom: none;
}

/* Accordion header/trigger button */
.paa-accordion__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    padding: 16px 20px;
    margin: 0;
    border: none;
    background-color: var(--paa-bg-primary);
    color: var(--paa-text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 500;
    line-height: 1.4;
    text-align: left;
    cursor: pointer;
    transition: background-color var(--paa-transition-duration) var(--paa-transition-easing);
}

.paa-accordion__header:hover {
    background-color: var(--paa-bg-hover);
}

.paa-accordion__header:focus {
    outline: none;
}

.paa-accordion__header:focus-visible {
    outline: none;
    background-color: var(--paa-bg-hover);
    box-shadow: inset 0 0 0 2px var(--paa-focus-ring);
}

/* Question text */
.paa-accordion__question {
    flex: 1;
    margin: 0;
    padding: 0;
}

/* Chevron icon container */
.paa-accordion__icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    transition: transform var(--paa-transition-duration) var(--paa-transition-easing);
}

/* SVG chevron styling */
.paa-accordion__icon svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: var(--paa-chevron-color);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Rotate chevron when expanded */
.paa-accordion__item[aria-expanded="true"] .paa-accordion__icon {
    transform: rotate(180deg);
}

/* Accordion content panel */
.paa-accordion__panel {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--paa-transition-duration) var(--paa-transition-easing);
}

.paa-accordion__item[aria-expanded="true"] .paa-accordion__panel {
    grid-template-rows: 1fr;
}

/* Inner content wrapper for smooth animation */
.paa-accordion__content {
    overflow: hidden;
}

/* Answer body styling */
.paa-accordion__body {
    padding: 0 20px 20px 20px;
    color: var(--paa-text-answer);
    font-size: 0.875rem;
    line-height: 1.75;
}

.paa-accordion__body p {
    margin: 0 0 1em 0;
}

.paa-accordion__body p:last-child {
    margin-bottom: 0;
}

.paa-accordion__body a {
    color: #1a73e8;
    text-decoration: none;
}

.paa-accordion__body a:hover {
    text-decoration: underline;
}

@media (prefers-color-scheme: dark) {
    .paa-accordion__body a {
        color: #8ab4f8;
    }
}

/* Lists in answers */
.paa-accordion__body ul,
.paa-accordion__body ol {
    margin: 0.5em 0;
    padding-left: 1.5em;
}

.paa-accordion__body li {
    margin-bottom: 0.25em;
}

/* Mobile responsive adjustments */
@media screen and (max-width: 600px) {
    .related-questions {
        margin: 1.5rem 0;
    }

    .related-questions__title {
        font-size: 1rem;
    }

    .paa-accordion__header {
        padding: 14px 16px;
        font-size: 0.875rem;
        /* Ensure minimum touch target of 44px */
        min-height: 48px;
    }

    .paa-accordion__body {
        padding: 0 16px 16px 16px;
        font-size: 0.8125rem;
    }

    .paa-accordion__icon {
        width: 20px;
        height: 20px;
    }

    .paa-accordion__icon svg {
        width: 18px;
        height: 18px;
    }
}

/* Empty state */
.related-questions__empty {
    padding: 1rem;
    color: var(--paa-text-secondary);
    font-size: 0.875rem;
    text-align: center;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .paa-accordion__icon,
    .paa-accordion__panel,
    .paa-accordion__header {
        transition: none;
    }
}

/* Print styles */
@media print {
    .paa-accordion {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .paa-accordion__item[aria-expanded="false"] .paa-accordion__panel {
        grid-template-rows: 1fr;
    }

    .paa-accordion__icon {
        display: none;
    }

    .paa-accordion__header {
        font-weight: 600;
    }
}