/* ============================================
   TOP RIBBON - Desktop and Mobile
   ============================================ */
.nav-ribbon {
    /* Fixed at top, full width */
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;

    /* Styling */
    background-color: #fffff8;
    border-bottom: 1px solid #ccc;
    padding: 12px 15px;

    /* Typography */
    font-family: et-book, Palatino, "Palatino Linotype", Georgia, serif;
    font-size: 1.1rem;
    text-align: center;
    color: #111;

    /* Above content */
    z-index: 1000;

    /* Prevent text selection */
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;

    /* Flexbox for arrow layout */
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

/* Navigation text in center */
.nav-ribbon .nav-text {
    cursor: pointer;
}

/* Navigation arrows - remove underlines from links */
.nav-ribbon a,
.nav-aid a {
    text-decoration: none;
    background: none;
}

/* Navigation arrows */
.nav-arrow {
    font-size: 1.4rem;
    color: #111;
    padding: 0 8px;
    transition: color 0.2s ease;
}

.nav-arrow:hover {
    color: #a00;
}

.nav-arrow.disabled {
    color: #ccc;
    cursor: not-allowed;
}

/* Hamburger menu icon */
.nav-menu {
    font-size: 1.2rem;
    color: #ccc;
    cursor: pointer;
    padding: 0 8px;
    transition: color 0.2s ease;
    user-select: none;
    position: absolute;
    left: 15px;
}

.nav-menu:hover {
    color: #a00;
}

/* On desktop, position menu at text margin (12.5% from left) */
@media (min-width: 769px) {
    .nav-menu {
        left: 12.5%;
    }
}

/* Menu dropdown */
.menu-dropdown {
    position: fixed;
    top: 48px;
    left: 15px;
    background-color: #fffff8;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 8px 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 998;
    display: none;
    min-width: 150px;
    font-family: et-book, Palatino, "Palatino Linotype", Georgia, serif;
}

.menu-dropdown.visible {
    display: block;
}

/* On desktop, align dropdown with menu */
@media (min-width: 769px) {
    .menu-dropdown {
        left: 12.5%;
    }
}

.menu-option {
    padding: 10px 16px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    font-size: 1rem;
    color: #111;
}

.menu-option:hover {
    background-color: #f5f5f0;
    color: #a00;
}

/* Verse toggle - don't highlight background on hover */
.menu-option.verse-toggle {
    cursor: default;
}

.menu-option.verse-toggle:hover {
    background-color: transparent;
    color: #111;
}

/* Toggle options container */
.toggle-options {
    float: right;
    font-size: 0.9rem;
    margin-left: 15px;
}

/* Individual toggle choices */
.toggle-choice {
    color: #ccc;
    padding: 0 6px;
    cursor: pointer;
    transition: color 0.2s ease;
}

.toggle-choice:hover {
    color: #888;
}

.toggle-choice.active {
    color: #111;
    font-weight: bold;
    text-decoration: underline;
}


/* Add padding to body to account for fixed ribbon */
body {
    padding-top: 48px;
}

/* ============================================
   NAVIGATION AID - "THE TALUS BONE"
   (Hidden - using ribbon instead)
   ============================================ */
.nav-aid {
    display: none;
}

/* ============================================
   TREE CONTAINER - Navigation Tree
   ============================================ */
.tree-container {
    /* Fixed positioning below the ribbon, centered */
    position: fixed;
    top: 48px;
    left: 50%;
    transform: translateX(-50%);

    /* Core styling matching ribbon */
    background-color: #fffff8;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 15px;

    /* Size and scroll */
    width: 320px;
    max-height: 500px;
    overflow-y: auto;

    /* Shadow for depth */
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);

    /* Z-index below ribbon */
    z-index: 999;

    /* Hidden by default */
    display: none;
}

.tree-container.visible {
    display: block;
}

/* D3 Tree Styling - Tufte Aesthetic */
.tree-container svg {
    font-family: et-book, Palatino, "Palatino Linotype", Georgia, serif;
    font-size: 11px;
    user-select: none;
}

.tree-container .node circle {
    cursor: pointer;
    stroke-width: 1.5px;
}

.tree-container .node text {
    cursor: pointer;
    fill: #111;
}

/* Chapter links have underline on hover */
.tree-container .node.chapter text:hover {
    text-decoration: underline;
}

/* Current/highlighted chapter styling */
.tree-container .node.current text {
    font-weight: bold;
    fill: #a00;
}

.tree-container .node.current circle {
    fill: #a00;
    stroke: #a00;
}

.tree-container .link {
    fill: none;
    stroke: #555;
    stroke-opacity: 0.4;
    stroke-width: 1.5px;
}

/* Dark mode support for tree */
@media (prefers-color-scheme: dark) {
    .tree-container {
        background-color: #1a1a1a;
        border-color: #444;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    }

    .tree-container .node text {
        fill: #ddd;
    }

    .tree-container .node.current text {
        fill: #ff6b6b;
    }

    .tree-container .node.current circle {
        fill: #ff6b6b;
        stroke: #ff6b6b;
    }

    .tree-container .link {
        stroke: #888;
    }
}

/* Mobile adjustments for tree */
@media (max-width: 760px) {
    .tree-container {
        /* Full width on mobile */
        left: 0;
        right: 0;
        width: 100%;
        transform: none;
        max-height: 400px;
        padding: 12px;
    }

    .tree-container svg {
        font-size: 10px;
    }
}

/* ============================================
   BOTTOM NAVIGATION (truly inline, after last period)
   ============================================ */
.nav-ribbon-bottom {
    /* Display inline with text */
    display: inline-block;

    /* Typography - MATCHES nav-ribbon exactly */
    font-family: et-book, Palatino, "Palatino Linotype", Georgia, serif;
    font-size: 1.1rem;
    color: #111;

    /* Prevent text selection */
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;

    /* Slight spacing from text */
    margin-left: 0.25rem;
    white-space: nowrap;
}

/* Navigation text in center */
.nav-ribbon-bottom .nav-text {
    cursor: pointer;
    margin: 0 0.3rem;
}

/* Remove underlines from links */
.nav-ribbon-bottom a {
    text-decoration: none;
    background: none;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .nav-ribbon-bottom {
        color: #ddd;
    }
}

/* ============================================
   VERSE HIGHLIGHTING
   ============================================ */
/* Highlight effect for verse navigation */
.verse-highlight {
    background-color: rgba(255, 235, 59, 0.4);
    transition: background-color 3.5s ease-out;
    padding: 4px 2px;
    border-radius: 3px;
    display: inline;
    box-decoration-break: clone;
    -webkit-box-decoration-break: clone;
}

/* Fade out the highlight very slowly */
.verse-highlight-fadeout {
    background-color: rgba(255, 235, 59, 0);
}

/* Dark mode support for verse highlighting */
@media (prefers-color-scheme: dark) {
    .verse-highlight {
        background-color: rgba(255, 193, 7, 0.3);
    }

    .verse-highlight-fadeout {
        background-color: rgba(255, 193, 7, 0);
    }
}