:root {
    --max-width: 800px;
    --header-height: 6vw; /* Fixed height for the header */
    --scrollbar-width: .33rem;

    --reading-background: #FFFFFF;
    --reading-text: #1A1A1A;
    --control-background: #E0E0E0;
    --control-text: #333333;
    --control-lines: #A2A2A2;
    --secondary-base: #B8860B;
    --secondary-effect: #DAA520;  
}

.dark-theme {
    --reading-background: #0D0D0D;
    --reading-text: #E0E0E0;
    --control-background: #2D2D2D;
    --control-text: #B3B3B3;
    --control-lines: #343434;
    --secondary-base: #B45F06;
    --secondary-effect: #CD7F32;
}

/* Base Styles & Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    z-index: 0;
}

ul, ol {
    list-style: none;
}

html {
    scroll-behavior: smooth;
}

body {
	font: normal 16px "Merriweather Sans";
	font-weight: 300;
    color: var(--reading-text);
    background-color: var(--reading-background);
    min-height: 100vh;
    display: grid;
    grid-template-rows: auto 1fr auto;
    grid-template-columns: 1fr;
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.body-content {
    display: flex;
    height: 100vh;
}

/*
 * Style the left-content div.
 */
.left-content {
    width: 20vw;
    
}

.right-content {
    flex-grow: 1;
    /*overflow: auto;*/
    border-left: var(--secondary-base) 2px solid;
}

.logo-container {
    text-align: right;
}

.logo {
	font-family: "Raleway", sans-serif;
    font-size: 2rem;
    font-weight: 300;
    color: var(--secondary-base); /* Logo uses secondary accent color */
    padding: 0.5rem 0;
    margin-right: 1vw;
}

.main-nav {
    display: flex;
    gap: 1vw;
    align-items: center;
    padding: 0.5rem 0;
    margin-left: 5vw;
}

.menu-button {
    font: normal 16px "Merriweather Sans";
    background-color: transparent;
    border: none;
    border-bottom: transparent 2px solid;
    color: var(--control-text);
    cursor: pointer;
    padding: 0.1rem 1rem;
    font-size: 1rem;
    transition: border-bottom-color .5s ease;
}
.menu-button:hover
{
    background-color: transparent;
    border-color: transparent;
    border-bottom: var(--secondary-effect) 2px solid;
}

/* MODAL OVERLAY AND CONTENT STYLES */
.modal-panel {
    position: absolute;
    text-align: center;
    margin: 5vw;
    padding: 1.75vw 5vw 3vw;
    width: calc(100vw - 10vw);
    height: calc(100vh - 10vw);
    border: var(--control-lines) 1px solid;
    background-color: var(--reading-background);
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: opacity .5s ease, visibility .5s ease;
    pointer-events: none;
}

.modal-panel.is-active {
    opacity: 0.94;
    pointer-events: auto;
    visibility: visible;    
}
.modal-panel button.close {
    border: none;
    border-radius: 2rem;
    width: 2rem;
    height: 2rem;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--control-text);
    background-color: var(--control-background);
    text-align: center;
    vertical-align: middle;
    line-height: 100%;
    margin-bottom: 1rem;
}
.modal-panel {
    overflow-y: scroll;
}
.modal-panel::-webkit-scrollbar {
    display: none;
}

/* Reading area */

main {
    position: relative;
    overflow-y: auto;
    height : calc(100vh - var(--header-height));
/*    scrollbar-width: thin;
    scrollbar-color: var(--secondary-base) var(--reading-background);*/
}

.scrollable-area::-webkit-scrollbar {
    width: var(--scrollbar-width);
    background-color: transparent;
}   
.scrollable-area::-webkit-scrollbar-track {
    background-color: transparent;
    border-radius: var(--scrollbar-width);
}
.scrollable-area::-webkit-scrollbar-thumb {
    background-color: var(--secondary-base);
    border-radius: var(--scrollbar-width);
}
.scrollable-area::-webkit-scrollbar-thumb:hover {
    background-color: var(--secondary-effect); /* Changes color on hover */
}

article {
    position: relative;
	font: normal 1rem "Merriweather Sans";
	font-weight: 300;
	width: 70%;
    max-width: var(--max-width);
	margin: 0 auto 10vw 5vw;
	color: var(--reading-text);
}
article h1 {
	margin-top: 1vw;
    margin-bottom: 1.5rem;
	color: var(--secondary-base);
	font-family: "Raleway", sans-serif;
	font-weight: 200;
	font-style: normal;
	font-size: 3rem;
    letter-spacing: 1px; /* Slightly increased letter spacing for readability */
	text-transform: uppercase;
}
article p {
    padding: 0.5rem 0;
    line-height: 1.6; /* Improved readability */
	text-align: justify;
}
article p > em {
    display: block;
    font-family: "Gloria Hallelujah", cursive;
    font-weight: 400;
    font-style: normal;
    color: var(--secondary-base);
    text-align: center;
    font-style: italic;
}
article p.divider {
    color: var(--secondary-base);
    text-align: center;
    font-size: 1.33rem;
    letter-spacing: 1rem;
    line-height: 1;
    padding: 0.15rem 0;
}
article ul.endnotes {
    margin-top: 2vw;
    border-top: 1px solid var(--control-lines);
}
article p sup.endnote {
    color: var(--reading-background); 
    background-color: var(--secondary-base);
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.6rem;
    padding:0.05rem 0.3rem;
    vertical-align: super;
    position: relative;
    line-height: 100%;
    top:2px;
    margin-left:2px;
    cursor: pointer;
}
article p sup.endnote:hover,
article p sup.endnote:focus {
    background-color: var(--secondary-effect);
}
article .endnotes li {
    margin: 0.5rem;
    text-align: left;
    color: var(--reading-text);
    font-size: 0.8rem;
    line-height: 150%;    
}
.endnotes li::marker {
    color: var(--secondary-base);
}

article nav {
    margin: 2vw auto;
    display: table;
    justify-content: center;
    flex-direction: column;
}
article nav div {
    display: table-row;
}
article nav button {
    display: table-cell;
    width: 100%;
	font: normal 1rem "Raleway", sans-serif;
	font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border: var(--secondary-base) 1.5px solid;
    color: var(--reading-text);
    background-color: transparent;
    cursor: pointer;
    margin: .33rem 0;
    padding: 0.66rem 1.5rem;
    transition: border-color .3s ease;
}
article nav button:hover,
article nav button:focus {
    border-color: var(--secondary-effect);
}
article nav button::after {
    content: " ⇾";
    font-weight: 100;
    font-size: 1.25rem;
    color: var(--secondary-effect);
    transition: color .3s ease;
}


aside#narratives-panel button[data-target] {
    display: inline-block;
    min-width: 44%;
    padding: 1rem;
    background-color: var(--reading-background);
    border: 1px var(--secondary-base) solid;
    cursor: pointer;
    font: normal 1rem "Raleway", sans-serif; 
    text-transform: uppercase;
    color: var(--reading-text);
}
aside#narratives-panel div.chapter-divider::after {
    content: '↓';
}
aside#narratives-panel div.selection {
    display: inline-block;    
    padding: 1rem;
    background-color: var(--control-background);    
    border: 1px var(--secondary-base) solid;
    border-radius: 25px;
    font: normal 0.9rem "Raleway", sans-serif; 
    text-transform: uppercase;
    color: var(--reading-text);
}
div#tooltip {
  position: absolute;
  top: 0;
  left: 0;
  width: 33vw;
  height: auto;
  padding: 20px;
  background-color: var(--reading-background);
  font-size: 0.85rem;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none; /* Prevent interaction while hidden */
}

div#tooltip.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
@media only screen and (max-width: 600px) {
    .left-content {
        width: auto;
        background-color: var(--secondary-base);
    }
    .logo {
        font-size: 0.88rem;
        margin: 0.2rem;        
        color: var(--reading-background);
    }
    article {
        font-size: 0.88rem;
        width: auto;
        margin-right: 5vw;
    }
    article h1 {
        font-size: 2rem;
    }
    aside#narratives-panel button[data-target],
    aside#narratives-panel div.selection {
        font-size: 0.82rem;
        padding: 0.5rem;
    }
}