/**
 * CAC Table of Contents - Frontend Styles
 * By TebarDigital
 */

:root {
    --cac-toc-accent: #2563eb;
    --cac-toc-accent-hover: #1d4ed8;
    --cac-toc-pill-bg: #eef2ff;
    --cac-toc-pill-text: #2563eb;
    --cac-toc-text: #475569;
    --cac-toc-text-dark: #1e293b;
    --cac-toc-divider: #e2e8f0;
    --cac-toc-divider-style: solid;
    --cac-toc-rail-color: #e2e8f0;
    --cac-toc-kicker-color: #64748b;
    --cac-toc-border-radius: 8px;
    --cac-toc-card-bg: #ffffff;
}

/* Wrapper */
.cac-toc-wrapper {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.cac-toc-wrapper--sticky {
    position: -webkit-sticky;
    position: sticky;
    top: 100px;
    z-index: 25;
    will-change: transform;
}

/* Divi Ancestor Sticky Compatibility (Prevents Divi scroll scripts from trapping sticky with overflow-y: hidden) */
html:has(.cac-toc-wrapper--sticky),
body:has(.cac-toc-wrapper--sticky),
#page-container:has(.cac-toc-wrapper--sticky),
#et-boc:has(.cac-toc-wrapper--sticky),
#et-main-area:has(.cac-toc-wrapper--sticky),
#main-content:has(.cac-toc-wrapper--sticky),
.et-l--body:has(.cac-toc-wrapper--sticky),
.et_builder_inner_content:has(.cac-toc-wrapper--sticky) {
    overflow-y: visible !important;
}

body.single #page-container,
body.single #main-content,
body.single #et-main-area,
body.single .et-l--body,
body.single .et_builder_inner_content {
    overflow-y: visible !important;
}

/* Divi Theme Builder Flexbox & Sticky Container Compatibility */
.et_pb_row:has(.cac-toc-wrapper--sticky),
.et_flex_row:has(.cac-toc-wrapper--sticky) {
    align-items: stretch !important;
    overflow: visible !important;
}

.et_pb_column:has(.cac-toc-wrapper--sticky),
.et_flex_column:has(.cac-toc-wrapper--sticky) {
    display: block !important;
    align-self: stretch !important;
    overflow: visible !important;
    position: relative !important;
    min-height: 100% !important;
}

/* Card */
.cac-toc-card {
    background-color: var(--cac-toc-card-bg);
    box-sizing: border-box;
    font-family: inherit;
}

/* Header */
.cac-toc-card__header {
    padding-bottom: 0;
    margin-bottom: 10px;
    display: block;
    font-size: 16px;
    font-weight: 600;
    color: var(--cac-toc-text-dark);
    line-height: 1.3;
    letter-spacing: -0.01em;
}

/* Rail */
.cac-toc-rail {
    position: relative;
}

/* Kicker */
.cac-toc-rail__kicker {
    display: none;
}

/* Nav & Lists */
.cac-toc-nav {
    display: block;
}

.cac-toc-list,
.cac-toc-sublist {
    list-style: none !important;
    margin: 0 !important;
    padding: 0 !important;
}

.cac-toc-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--cac-toc-divider);
    border-bottom: none;
    border-radius: 8px;
    overflow: hidden;
}

/* Parent Bar */
.cac-toc-parent-bar {
    position: relative;
}

.cac-toc-link {
    text-decoration: none !important;
    display: inline-block;
    color: var(--cac-toc-text);
    font-size: 14px;
    line-height: 1.5;
    transition: color 0.15s ease;
}

.cac-toc-link--parent,
.cac-toc-link--child {
    display: block;
    width: 100%;
    font-weight: 500;
    color: var(--cac-toc-text-dark);
    flex: 1;
    padding: 4px 12px;
    border-bottom: 1px solid var(--cac-toc-divider);
}

.cac-toc-link--parent:hover,
.cac-toc-link--child:hover {
    background-color: var(--cac-toc-pill-bg);
}

.cac-toc-link--child {
    padding-left: 30px;
}

/* Chevron Button */
.cac-toc-toggle {
    position: absolute;
    right: 5px;
    top: 5px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    padding: 0;
    margin: 0;
    border-radius: 50%;
    border: 1px solid transparent;
    background: #ffffff;
    color: var(--cac-toc-accent);
    cursor: pointer;
    flex-shrink: 0;
    transition: background-color 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.cac-toc-toggle:hover {
    background-color: #f0f6ff;
    border-color: var(--cac-toc-accent);
}

.cac-toc-toggle__icon {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    transition: transform 0.25s ease;
}

/* Open / Closed State for Accordion */
.cac-toc-item--parent.is-open .cac-toc-toggle__icon {
    transform: rotate(0deg);
}

.cac-toc-item--parent:not(.is-open) .cac-toc-toggle__icon {
    transform: rotate(180deg);
}

.cac-toc-sublist {
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
}

.cac-toc-item--parent:not(.is-open) .cac-toc-sublist {
    max-height: 0;
    opacity: 0;
    pointer-events: none;
}

.cac-toc-item--parent.is-open .cac-toc-sublist {
    max-height: 1000px;
    opacity: 1;
}

.cac-toc-subitem:last-child {
    border-bottom: none;
}

/* Target Heading Flash/Pulse Animation */
@keyframes cac-toc-target-pulse {
    0% {
        background-color: var(--cac-toc-pill-bg);
        box-shadow: 0 0 0 6px var(--cac-toc-pill-bg);
    }

    100% {
        background-color: transparent;
        box-shadow: 0 0 0 0 transparent;
    }
}

.cac-toc-target-pulse {
    animation: cac-toc-target-pulse 1.4s cubic-bezier(0.22, 1, 0.36, 1) forwards !important;
    border-radius: 4px;
}

/* Active Highlight */
.cac-toc-nav .cac-toc-link {
    transition: all .3s;
}

.cac-toc-nav .cac-toc-link.is-active {
    color: var(--cac-toc-accent) !important;
    background-color: var(--cac-toc-pill-bg);
}

/* Flat Item (no children) */
.cac-toc-item--flat {
    padding: 0;
}

/* Target heading smooth offset focus */
:target {
    scroll-margin-top: 100px;
}

/* Responsive */
@media (max-width: 768px) {
    .cac-toc-wrapper--sticky {
        position: static;
    }

    .cac-toc-card {
        padding: 10px 12px 16px 12px;
    }
}