/* ==============================================
   ClutterlessNest TOC v1.0 — Coastal Calm Theme
   Palette:
     Primary Teal:  #2A7B88
     Hover Teal:    #1F5C66
     Gold/CTA:      #D4A574
     Dark Slate:    #2D3436
     Seafoam BG:    #E8F4F3
     Cream:         #FAFCFC
   ============================================== */

/* --- Container --- */
.cn-toc-container {
    background: linear-gradient(135deg, #FAFCFC 0%, #E8F4F3 100%);
    border: 1px solid #c8ddd9;
    border-left: 4px solid #2A7B88;
    padding: 0;
    margin-top: 1.5em;
    margin-bottom: 2.5em;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(42, 123, 136, 0.08);
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
    transition: box-shadow 0.3s ease;
}

.cn-toc-container:hover {
    box-shadow: 0 4px 16px rgba(42, 123, 136, 0.12);
}

/* --- Title/Header --- */
.cn-toc-container .cn-toc-title,
.cn-toc-container.amp-active amp-accordion > section > h4 {
    font-weight: 600;
    font-size: 1.05em;
    color: #2D3436;
    margin: 0;
    padding: 14px 20px;
    background: transparent;
    border-bottom: 1px solid rgba(42, 123, 136, 0.15);
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: default;
    letter-spacing: 0.02em;
}

.cn-toc-container.amp-active amp-accordion > section > h4 {
    cursor: pointer;
}

/* When collapsed, remove bottom border */
.cn-toc-container:not(.is-expanded) .cn-toc-title {
    border-bottom-color: transparent;
}

/* --- Leaf Icon --- */
.cn-toc-icon {
    color: #2A7B88;
    flex-shrink: 0;
    opacity: 0.8;
}

/* --- Title text --- */
.cn-toc-title span {
    flex: 1;
}

/* --- Arrow SVG --- */
.cn-toc-arrow {
    color: #D4A574;
    transition: transform 0.3s ease, color 0.2s ease;
    flex-shrink: 0;
}

/* Rotate arrow when expanded */
.cn-toc-container.is-expanded .cn-toc-arrow,
.cn-toc-container.amp-active amp-accordion > section[expanded] .cn-toc-arrow {
    transform: rotate(180deg);
}

/* --- Toggle Button (Non-AMP) --- */
.cn-toc-container .cn-toc-toggle {
    background: none;
    border: none;
    padding: 4px;
    line-height: 0;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    border-radius: 50%;
    transition: background-color 0.2s ease;
}

.cn-toc-container .cn-toc-toggle:hover {
    background-color: rgba(42, 123, 136, 0.1);
}

.cn-toc-container .cn-toc-toggle:hover .cn-toc-arrow {
    color: #2A7B88;
}

.cn-toc-container .cn-toc-toggle:focus {
    outline: 2px solid rgba(42, 123, 136, 0.3);
    outline-offset: 2px;
}

/* --- List Area --- */
.cn-toc-container amp-accordion > section > div,
.cn-toc-container ul#cn-toc-list {
    list-style: none;
    padding: 12px 20px 16px;
    margin: 0;
    background: transparent;
    overflow: hidden;
    border-top: none;
}

.cn-toc-container amp-accordion > section > div > ul.cn-toc-list {
    padding: 0;
}

/* --- List Items (H2) --- */
.cn-toc-container .cn-toc-list .cn-toc-item {
    margin-bottom: 1px;
    line-height: 1.4;
}

.cn-toc-container .cn-toc-list a {
    text-decoration: none;
    color: #2A7B88;
    font-weight: 500;
    display: inline-block;
    transition: color 0.2s ease, padding-left 0.2s ease;
    padding: 4px 0;
    border-radius: 3px;
}

.cn-toc-container .cn-toc-list a:hover,
.cn-toc-container .cn-toc-list a:focus {
    color: #1F5C66;
    text-decoration: none;
    padding-left: 4px;
}

/* --- Sublist (H3) --- */
.cn-toc-container .cn-toc-sublist {
    list-style: none;
    padding-left: 20px;
    margin-top: 2px;
    margin-bottom: 4px;
    border-left: 2px solid #D4A574;
    padding-top: 2px;
    padding-bottom: 2px;
}

.cn-toc-container .cn-toc-sublist .cn-toc-item {
    font-size: 0.93em;
    margin-bottom: 1px;
}

.cn-toc-container .cn-toc-sublist a {
    color: #3a8f9b;
    font-weight: 400;
    padding: 3px 0;
}

.cn-toc-container .cn-toc-sublist a:hover,
.cn-toc-container .cn-toc-sublist a:focus {
    color: #1F5C66;
}

/* --- Mobile responsive --- */
@media (max-width: 767px) {
    .cn-toc-container {
        margin-top: 1em;
        margin-bottom: 1.5em;
        border-radius: 6px;
    }

    .cn-toc-container .cn-toc-title {
        padding: 12px 16px;
        font-size: 1em;
    }

    .cn-toc-container ul#cn-toc-list,
    .cn-toc-container amp-accordion > section > div {
        padding: 10px 16px 14px;
    }

    .cn-toc-container .cn-toc-sublist {
        padding-left: 16px;
    }
}