/* ==========================================================================
   P4U FAQ - Front Styles (v1.2.1)
   Premium FAQ design — clean, modern, professional
   ========================================================================== */

:root {
    --p4u-primary: #9C77EA;
    --p4u-primary-dark: #8460d6;
    --p4u-primary-light: #f3f0fa;
    --p4u-accent: #9C77EA;
    --p4u-text: #0C023D;
    --p4u-text-light: #555;
    --p4u-bg: #fff;
    --p4u-bg-light: #f8f7fc;
    --p4u-border: #e0dce8;
    --p4u-border-light: #f0eef5;
    --p4u-shadow: 0 2px 8px rgba(29, 10, 74, 0.06);
    --p4u-shadow-hover: 0 4px 16px rgba(29, 10, 74, 0.1);
    --p4u-radius: 8px;
    --p4u-transition: 0.25s ease;
}

/* ==========================================================================
   Container & Page header
   ========================================================================== */

.p4u-faq-container {
    margin: 0 0 40px;
    font-family: inherit;
}

/* Page title — styled via breadcrumb or category heading */
.p4u-faq-container h2,
.p4u-faq-categories h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--p4u-text);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--p4u-primary);
    display: inline-block;
}

/* ==========================================================================
   Search — modern elevated search bar
   ========================================================================== */

.p4u-faq-search {
    margin-bottom: 32px;
    background: linear-gradient(135deg, var(--p4u-primary-light) 0%, #f0f4ff 100%);
    padding: 28px 24px;
    border-radius: var(--p4u-radius);
    border: 1px solid rgba(47, 181, 210, 0.15);
}

.p4u-faq-search form {
    display: flex;
    width: 100%;
}

.p4u-faq-search .input-group {
    max-width: 600px;
    width: 100%;
    box-shadow: var(--p4u-shadow);
    border-radius: 6px;
    overflow: hidden;
    display: flex;
    flex-wrap: nowrap;
}

.p4u-faq-search input.form-control {
    border: 1px solid #d8dde6;
    border-right: none;
    padding: 12px 18px;
    font-size: 15px;
    color: var(--p4u-text);
    background: var(--p4u-bg);
    height: auto;
    flex: 1 1 auto;
    min-width: 0;
    transition: border-color var(--p4u-transition), box-shadow var(--p4u-transition);
}

.p4u-faq-search .input-group-append {
    flex: 0 0 auto;
}

.p4u-faq-search input.form-control:focus {
    border-color: var(--p4u-primary);
    box-shadow: 0 0 0 3px rgba(47, 181, 210, 0.15);
    outline: none;
}

.p4u-faq-search input.form-control::placeholder {
    color: #aab0b8;
}

.p4u-faq-search .btn-primary {
    background: var(--p4u-primary);
    border: 1px solid var(--p4u-primary);
    padding: 12px 20px;
    transition: background var(--p4u-transition);
}

.p4u-faq-search .btn-primary:hover {
    background: var(--p4u-primary-dark);
    border-color: var(--p4u-primary-dark);
}

.p4u-faq-search .btn-primary .material-icons {
    font-size: 20px;
    vertical-align: middle;
}

/* ==========================================================================
   Categories sidebar — clean list with hover effects
   ========================================================================== */

.p4u-faq-categories {
    margin-bottom: 24px;
}

.p4u-category-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.category-item {
    padding: 0;
    border-bottom: none;
}

.category-item a {
    display: block;
    padding: 10px 14px;
    color: var(--p4u-text-light);
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.93rem;
    transition: all var(--p4u-transition);
    position: relative;
    margin-bottom: 2px;
}

.category-item a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--p4u-primary);
    border-radius: 2px;
    transition: height var(--p4u-transition);
}

.category-item a:hover {
    background: var(--p4u-primary-light);
    color: var(--p4u-primary-dark);
    padding-left: 18px;
}

.category-item a:hover::before {
    height: 60%;
}

.category-item.active a {
    font-weight: 700;
    color: var(--p4u-primary-dark);
    background: var(--p4u-primary-light);
    padding-left: 18px;
}

.category-item.active a::before {
    height: 60%;
}

/* ==========================================================================
   FAQ Item — card with left accent border
   ========================================================================== */

.p4u-faq-item {
    margin-bottom: 16px;
    border: 1px solid var(--p4u-border);
    border-left: 4px solid var(--p4u-primary);
    border-radius: var(--p4u-radius);
    padding: 0;
    background: var(--p4u-bg);
    box-shadow: var(--p4u-shadow);
    transition: box-shadow var(--p4u-transition), transform var(--p4u-transition);
    overflow: hidden;
}

.p4u-faq-item:hover {
    box-shadow: var(--p4u-shadow-hover);
    transform: translateY(-1px);
}

.p4u-faq-list .p4u-faq-item,
.p4u-faq-product-extra .p4u-faq-item,
.p4u-faq-product-tab .p4u-faq-item {
    overflow: hidden;
}

/* ==========================================================================
   Question heading — clickable with icon
   ========================================================================== */

.p4u-faq-question {
    margin: 0;
    padding: 18px 22px;
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.5;
    color: var(--p4u-text);
    background: var(--p4u-bg);
    border-bottom: 1px solid var(--p4u-border-light);
}

/* Clickable toggle (accordion mode) */
.p4u-faq-question.p4u-toggle {
    cursor: pointer;
    position: relative;
    padding-right: 50px;
    transition: background-color var(--p4u-transition), color var(--p4u-transition);
    user-select: none;
}

.p4u-faq-question.p4u-toggle:hover {
    background-color: var(--p4u-primary-light);
    color: var(--p4u-primary-dark);
}

.p4u-faq-question.p4u-toggle::after {
    content: '+';
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    line-height: 26px;
    text-align: center;
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--p4u-primary);
    background: var(--p4u-primary-light);
    border-radius: 50%;
    transition: all var(--p4u-transition);
}

.p4u-faq-question.p4u-toggle:hover::after {
    background: var(--p4u-primary);
    color: #fff;
}

.p4u-faq-question.p4u-toggle.is-open::after {
    content: '\2212'; /* minus sign */
    background: var(--p4u-primary);
    color: #fff;
    transform: translateY(-50%) rotate(180deg);
}

/* ==========================================================================
   Short Answer — highlighted info box
   ========================================================================== */

.p4u-faq-short-answer {
    padding: 14px 22px;
    background: var(--p4u-bg-light);
    border-bottom: 1px solid var(--p4u-border-light);
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--p4u-text);
}

/* ==========================================================================
   Full Answer — smooth collapse animation
   ========================================================================== */

.p4u-faq-full-answer {
    padding: 18px 22px;
    line-height: 1.7;
    color: var(--p4u-text);
    font-size: 0.95rem;
}

.p4u-faq-full-answer p {
    margin-bottom: 12px;
}

.p4u-faq-full-answer p:last-child {
    margin-bottom: 0;
}

/* Collapsible state */
.p4u-faq-full-answer.p4u-collapsible {
    max-height: 0;
    overflow: hidden;
    padding: 0 22px;
    opacity: 0;
    transition: max-height 0.35s ease, opacity 0.3s ease, padding 0.3s ease;
}

.p4u-faq-full-answer.p4u-collapsible.is-open {
    max-height: 5000px;
    opacity: 1;
    padding: 18px 22px;
}

/* ==========================================================================
   Feedback — clean inline buttons
   ========================================================================== */

.faq-feedback {
    border-top: 1px solid var(--p4u-border-light);
    padding: 14px 0 4px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.faq-feedback p {
    margin: 0;
    font-size: 0.88rem;
    color: var(--p4u-text-light);
    margin-right: 4px;
}

.feedback-btn {
    margin: 0;
    border-radius: 20px;
    padding: 5px 14px;
    font-size: 0.82rem;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: all var(--p4u-transition);
}

.feedback-btn .material-icons {
    font-size: 15px;
    vertical-align: middle;
}

.feedback-btn.btn-outline-success:hover {
    background: #28a745;
    color: #fff;
    transform: scale(1.05);
}

.feedback-btn.btn-outline-danger:hover {
    background: #dc3545;
    color: #fff;
    transform: scale(1.05);
}

/* ==========================================================================
   Author (E-E-A-T) — subtle info bar
   ========================================================================== */

.p4u-faq-author {
    padding: 10px 22px;
    font-size: 0.85rem;
    color: var(--p4u-text-light);
    border-top: 1px solid var(--p4u-border-light);
    background: var(--p4u-bg-light);
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 4px;
}

.p4u-faq-author .author-label {
    margin-right: 2px;
    color: #999;
}

.p4u-faq-author strong {
    color: var(--p4u-text);
}

.p4u-faq-author .author-bio {
    width: 100%;
    margin-top: 2px;
    font-style: italic;
    color: #888;
    font-size: 0.82rem;
}

/* ==========================================================================
   Date Updated
   ========================================================================== */

.p4u-faq-updated {
    display: inline-block;
    padding: 6px 22px;
    font-size: 0.8rem;
    color: #999;
}

/* ==========================================================================
   Answer Type Badge — pill style
   ========================================================================== */

.p4u-answer-type-badge {
    display: inline-block;
    margin: 6px 22px 10px;
    padding: 4px 12px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: #fff;
    background: linear-gradient(135deg, var(--p4u-accent) 0%, var(--p4u-primary) 100%);
    border-radius: 20px;
}

/* ==========================================================================
   Question Variants (screen reader only)
   ========================================================================== */

.p4u-faq-variants.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================================================
   Related FAQs — links section
   ========================================================================== */

.p4u-faq-related {
    padding: 12px 22px 16px;
    border-top: 1px solid var(--p4u-border-light);
    font-size: 0.9rem;
    background: var(--p4u-bg-light);
}

.p4u-faq-related strong {
    display: block;
    margin-bottom: 8px;
    color: var(--p4u-text-light);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.p4u-faq-related ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.p4u-faq-related ul li {
    padding: 4px 0;
}

.p4u-faq-related ul li::before {
    content: '\2192'; /* right arrow */
    margin-right: 8px;
    color: var(--p4u-primary);
    font-weight: bold;
}

.p4u-faq-related a {
    color: var(--p4u-primary-dark);
    text-decoration: none;
    transition: color var(--p4u-transition);
}

.p4u-faq-related a:hover {
    color: var(--p4u-primary);
    text-decoration: underline;
}

/* ==========================================================================
   Product Extra Content styles
   ========================================================================== */

.p4u-faq-product-extra .p4u-faq-item {
    border-left-width: 3px;
}

.p4u-faq-product-extra .p4u-faq-question {
    background: none;
    border-bottom-color: var(--p4u-border-light);
}

/* ==========================================================================
   Product Footer styles — full-width accordion
   ========================================================================== */

.p4u-faq-product-footer {
    margin-top: 2.5rem;
    padding: 0;
}

.p4u-faq-section-title {
    margin: 0 0 1.25rem;
    padding: 0;
    letter-spacing: -0.01em;
}

.p4u-faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.p4u-faq-product-footer .faq-item {
    border: none;
    border-bottom: 1px solid var(--p4u-border);
    border-left: none;
    border-radius: 0;
    padding: 0;
    box-shadow: none;
    background: transparent;
    overflow: hidden;
    margin-bottom: 0;
}

.p4u-faq-product-footer .faq-item:first-child {
    border-top: 1px solid var(--p4u-border);
}

.p4u-faq-product-footer .faq-item:hover {
    box-shadow: none;
    transform: none;
}

.p4u-faq-product-footer .p4u-faq-question {
    font-size: 0.95rem;
    font-weight: 600;
    padding: 16px 48px 16px 0;
    margin: 0;
    background: transparent;
    border-bottom: none;
    color: var(--p4u-text);
    cursor: pointer;
    position: relative;
    user-select: none;
    transition: color var(--p4u-transition);
}

.p4u-faq-product-footer .p4u-faq-question:hover {
    color: var(--p4u-accent);
}

.p4u-faq-product-footer .p4u-faq-question::after {
    content: '+';
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    line-height: 26px;
    text-align: center;
    font-size: 1.25rem;
    font-weight: 300;
    color: var(--p4u-accent);
    border-radius: 50%;
    transition: all var(--p4u-transition);
}

.p4u-faq-product-footer .p4u-faq-question.is-open::after {
    content: '\2212';
    transform: translateY(-50%) rotate(180deg);
}

.p4u-faq-product-footer .p4u-faq-full-answer {
    padding: 0 0 16px;
    line-height: 1.7;
    font-size: 0.9rem;
    color: var(--p4u-text-light);
}

.p4u-faq-product-footer .p4u-faq-full-answer.p4u-collapsible {
    max-height: 0;
    overflow: hidden;
    padding: 0;
    opacity: 0;
    transition: max-height 0.35s ease, opacity 0.25s ease, padding 0.3s ease;
}

.p4u-faq-product-footer .p4u-faq-full-answer.p4u-collapsible.is-open {
    max-height: 5000px;
    opacity: 1;
    padding: 0 0 16px;
}

.p4u-faq-product-footer .p4u-faq-full-answer p {
    margin: 0;
}

.p4u-faq-footer-link {
    margin-top: 1.25rem;
    text-align: left;
}

.p4u-faq-footer-link a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--p4u-accent);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: color var(--p4u-transition);
}

.p4u-faq-footer-link a::after {
    content: '\2192';
    font-size: 1.1em;
    transition: transform var(--p4u-transition);
}

.p4u-faq-footer-link a:hover {
    color: var(--p4u-primary);
}

.p4u-faq-footer-link a:hover::after {
    transform: translateX(4px);
}

/* ==========================================================================
   Product Tab styles
   ========================================================================== */

.p4u-faq-product-tab {
    padding: 20px 0;
}

.p4u-faq-product-tab .p4u-faq-question {
    background: none;
    border-bottom-color: var(--p4u-border-light);
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.p4u-faq-container .pagination {
    margin-top: 24px;
    justify-content: center;
}

.p4u-faq-container .pagination .page-link {
    border-radius: 6px;
    margin: 0 3px;
    color: var(--p4u-primary);
    border-color: var(--p4u-border);
    transition: all var(--p4u-transition);
}

.p4u-faq-container .pagination .page-item.active .page-link {
    background: var(--p4u-primary);
    border-color: var(--p4u-primary);
}

.p4u-faq-container .pagination .page-link:hover {
    background: var(--p4u-primary-light);
    border-color: var(--p4u-primary);
}

/* ==========================================================================
   Empty state
   ========================================================================== */

.p4u-faq-list .alert-info {
    border-radius: var(--p4u-radius);
    border-left: 4px solid var(--p4u-primary);
    padding: 20px 24px;
    background: var(--p4u-primary-light);
    color: var(--p4u-text-light);
}

/* ==========================================================================
   Responsive - Tablet (max-width: 991px)
   ========================================================================== */

@media (max-width: 991px) {
    .p4u-faq-content.row {
        flex-direction: column;
    }

    .p4u-faq-categories.col-md-3 {
        flex: 0 0 100%;
        max-width: 100%;
        margin-bottom: 24px;
    }

    .p4u-faq-categories h3 {
        font-size: 1rem;
    }

    .p4u-faq-list.col-md-9 {
        flex: 0 0 100%;
        max-width: 100%;
    }

    .p4u-category-list {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .category-item a {
        padding: 7px 16px;
        border: 1px solid var(--p4u-border);
        border-radius: 24px;
        font-size: 0.85rem;
        margin-bottom: 0;
    }

    .category-item a::before {
        display: none;
    }

    .category-item a:hover {
        padding-left: 16px;
    }

    .category-item.active a {
        background: var(--p4u-primary);
        border-color: var(--p4u-primary);
        color: #fff;
        padding-left: 16px;
    }

    .p4u-faq-product-footer .p4u-faq-question {
        font-size: 0.9rem;
        padding: 14px 42px 14px 0;
    }
}

/* ==========================================================================
   Responsive - Mobile (max-width: 576px)
   ========================================================================== */

@media (max-width: 576px) {
    .p4u-faq-container {
        margin: 10px 0 30px;
    }

    .p4u-faq-search {
        padding: 18px 16px;
        margin-bottom: 24px;
    }

    .p4u-faq-search input.form-control {
        padding: 10px 14px;
        font-size: 14px;
    }

    .p4u-faq-search .btn-primary {
        padding: 10px 16px;
    }

    .p4u-faq-item {
        margin-bottom: 12px;
        border-radius: 6px;
        border-left-width: 3px;
    }

    .p4u-faq-question {
        font-size: 0.95rem;
        padding: 14px 16px;
    }

    .p4u-faq-question.p4u-toggle {
        padding-right: 42px;
    }

    .p4u-faq-question.p4u-toggle::after {
        right: 12px;
        width: 24px;
        height: 24px;
        line-height: 22px;
        font-size: 1.1rem;
    }

    .p4u-faq-short-answer {
        padding: 12px 16px;
        font-size: 0.9rem;
    }

    .p4u-faq-full-answer {
        padding: 14px 16px;
    }

    .p4u-faq-full-answer.p4u-collapsible.is-open {
        padding: 14px 16px;
    }

    .p4u-faq-author {
        padding: 10px 16px;
        font-size: 0.8rem;
    }

    .p4u-faq-updated {
        padding: 6px 16px;
        font-size: 0.75rem;
    }

    .p4u-answer-type-badge {
        margin: 6px 16px 8px;
        font-size: 0.7rem;
    }

    .p4u-faq-related {
        padding: 10px 16px 14px;
        font-size: 0.85rem;
    }

    .p4u-faq-search .input-group {
        flex-wrap: nowrap;
    }

    .faq-feedback {
        padding: 12px 0 4px;
        gap: 6px;
    }

    .feedback-btn {
        padding: 4px 10px;
        font-size: 0.78rem;
    }

    .p4u-faq-product-footer .p4u-faq-question {
        font-size: 0.88rem;
        padding: 12px 40px 12px 0;
    }

    .p4u-faq-section-title {
        font-size: 1.1rem;
    }
}