/* ==============
   Base Styles
   ============== */
@font-face {
    font-family: 'IvoryLLWeb-Regular';
    src: url('../fonts/IvoryLLWeb-Regular.woff2') format('woff2');
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: 'IvoryMonoLLWeb-Regular';
    src: url('../fonts/IvoryMonoLLWeb-Regular.woff2') format('woff2');
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: 'IvoryMonoLLSub-Italic';
    src: url('../fonts/IvoryMonoLLSub-Italic.woff2') format('woff2');
    font-weight: normal;
    font-style: italic;
}

:root {
    /* Color Palette */
    --color-dark: #0F0E0E;
    --color-medium: #C79D4D;
    --color-light: #dcdcdc;
    --color-inactive: color-mix(in srgb, var(--color-medium) 67%, black);

    /* Typography */
    --base-font-size: 17px;
    --header-font-size: 36px;
    --side-panel-font-size: 18px;
    --oceanic-indicator-font-size: 14px;
    --content-about-font-size: 27px;
    --base-font-family: 'IvoryLLWeb-Regular', Courier, serif;
    --mono-font-family: 'IvoryMonoLLWeb-Regular', monospace;
    --ital-font-family: 'IvoryMonoLLSub-Italic', Courier, serif;

    /* Layout Dimensions */
    --header-height: 56px;
    --footer-height: 72px;
    --footer-content-gap: 15%;
    --foooter-indicator-height: 4px;
    --side-panel-width: 48px;
    --side-panel-expanded-width: 56px;
    --side-panel-text-offset: calc(35vh - var(--side-panel-width));

    /* Canvas Settings */
    --canvas-image-reverse-side-color: #F1E6D1;
    --canvas-image-annotation-text-color: #2B2B2B;
    --canvas-image-annotation-small-font-size: 7px;
    --canvas-image-annotation-regular-font-size: 14px;
    --canvas-image-small-font-max-size: 128px;

    /* Clipping Cards */
    --clipping-card-min-width: 280px;
    --clipping-card-flip-duration: 0.4s;
    --clipping-card-content-padding: 20px; /* there could be issues with caching and measurements? */
    --clipping-card-line-height: 1.3;
    --clipping-card-front-font-size: 18px;
    --clipping-card-back-font-size: 14px;

    /* Scroll & Pagination */
    --side-content-scroll-panel-visible-width: 64px;
    --side-content-scroll-panel-clickable-width: 128px;
    --page-indicator-width: 32px;
    --page-indicators-gap: 1px;

    /* Minimum space between images in about */
    --image-column-gap: 40px;
}

@media (max-width: 768px) {
    :root { /* TODO adjust these better */
        --header-font-size: 24px;
        --side-panel-font-size: 12px;
        --oceanic-indicator-font-size: 10px;
        --content-about-font-size: 18px;

        --header-height: 32px;
        --footer-height: 32px;
        --footer-content-gap: 5%;
        --foooter-indicator-height: 2px;
        --side-panel-width: 28px;
        --side-panel-expanded-width: 36px;
        --side-content-scroll-panel-visible-width: 24px;
        --side-content-scroll-panel-clickable-width: 48px;
    }
}

.dark-theme {
    background-color: var(--color-dark);
    color: var(--color-medium);
}

.light-theme {
    background-color: var(--color-light);
    color: var(--color-medium);
}

.medium-theme {
    background-color: var(--color-medium);
    color: var(--color-dark)
}

* { margin: 0; padding: 0; }
html {
    hanging-punctuation: first last;
}

body {
    min-height: 100vh; /* Take all available height */
    overflow: hidden; /* Keep this to prevent body scrolling */
    font-family: var(--base-font-family);
    background-color: var(--color-dark); /* use dark as a default */

    display: grid;
    grid-template-columns: var(--side-panel-width) 1fr var(--side-panel-width);
    grid-template-rows: 1fr auto;
}

@supports (height: 100dvh) {
    body {
        min-height: 100dvh;
    }
}

/* general header */
header {
    height: var(--header-height);
    display: flex;
    vertical-align: middle;
    justify-content: center;
    align-items: center;
    font-size: var(--header-font-size);
    grid-column: 2;
    grid-row: 1 / -1;
    caret-color: transparent;
}

header .header-title {
    grid-column: 2;
    font-size: var(--header-font-size);
    font-weight: normal;
    /*padding: 0 20px; !* Prevents overlap with buttons *!*/
    height: var(--header-height);
    line-height: var(--header-height);
}

/* Only in clippings page */
.clippings-header .header-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    width: 100%;
    height: 100%;
}

.clippings-header .header-grid .toggle-buttons {
    grid-column: 3;
    justify-self: end;
    display: flex;
    gap: 8px;
    align-items: center;
    padding: 0 calc(var(--clipping-card-content-padding) / 2); /* margin to prevent overlap with expanded .right-side-link-panel or scrollbar */
    height: var(--header-height);
    line-height: var(--header-height);
}

.clippings-header .header-grid .toggle-buttons i {
    display: inline-block;
    width: var(--base-font-size);
    height: var(--base-font-size);
    background-size: contain;
    background-repeat: no-repeat;
    vertical-align: -0.125em;
}
.clippings-header .header-grid .toggle-buttons i:hover {
    opacity: 0.75;
}
.clippings-header .header-grid .toggle-buttons .stack-grid-toggle-btn {
    background-image: url('../images/icons/stack.svg');
}
.clippings-header .header-grid .toggle-buttons .stack-grid-toggle-btn.active {
    background-image: url('../images/icons/grid.svg');
}
.clippings-header .header-grid .toggle-buttons .collapse-expand-toggle-btn {
    background-image: url('../images/icons/close.svg');
}
.clippings-header .header-grid .toggle-buttons .collapse-expand-toggle-btn.active {
    background-image: url('../images/icons/contents.svg');
}

/* content */
.content {
    font-size: var(--base-font-size);
    position: relative;
    grid-column: 2;
    grid-row: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    margin-top: var(--header-height);
}
.content h1 {
    font-size: 1.5em;
    line-height: 1.2;
    margin-bottom: 0.8rem;
}
.content h2 {
    font-size: 1.25em;
    line-height: 1.3;
    margin: 1.2rem 0 0.8rem;
}
.content p {
    font-size: 1em;
    line-height: 1.6;
    margin-bottom: 1rem;
}
.content p > a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s;
    border-bottom: 1px solid transparent;
}
.content p > a:hover {
    border-bottom-color: currentColor;
}
.content em, .content i {
    font-family: var(--ital-font-family);
    font-style: italic;
}

/* content of index page */
.content-index {
    padding: var(--side-panel-width); /* pad canvas */
}
.content-index canvas {
    display: block;
    background-color: var(--color-dark); /* use dark for now, but transparent is another valid option */
    width: 100%; /* fill all available space */
    height: 100%;
}
.content-index .content-scroll-panel {
    position: fixed;
    top: 0;
    bottom: var(--side-panel-width);
    z-index: 999;
    cursor: pointer;
    transition: opacity 0.3s;
    width: var(--side-content-scroll-panel-clickable-width);
    caret-color: transparent;
    user-select: none;
}
.content-index .content-scroll-panel.disabled {
    opacity: 0;
    pointer-events: none;
    cursor: default;
}
.content-index .left-content-scroll-panel {
    left: var(--side-panel-width);
}
.content-index .right-content-scroll-panel {
    right: var(--side-panel-width);
}

.content-index .content-scroll-panel {
    overflow: hidden;
}

.content-index .content-scroll-panel .arrow-wrapper {
    position: absolute;
    top: var(--side-panel-text-offset);
    bottom: 0;
    display: flex;
    align-items: center;
    width: var(--side-content-scroll-panel-visible-width);
    height: 1px; /* Base height for offset calculation */
}

.content-index .left-content-scroll-panel .arrow-wrapper {
    left: 0;
    justify-content: flex-start;
}

.content-index .right-content-scroll-panel .arrow-wrapper {
    right: 0;
    justify-content: flex-end;
}

.content-index .content-scroll-panel .arrow {
    font-size: calc( 2 * var(--base-font-size) );
    color: var(--color-medium);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
    padding: 0 calc(var(--side-content-scroll-panel-visible-width) * 0.1875);
    white-space: nowrap;
    margin-top: 0;
    transform-origin: center;
}

.content-index .content-scroll-panel:hover .arrow {
    opacity: 1;
}
.content-index .page-indicators {
    position: fixed;
    bottom: calc(var(--footer-height) - 10px);
    height: 20px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: visible !important; /* Override global overflow */
    pointer-events: none; /* Allow clicks through to inner container */
    caret-color: transparent;
    cursor: pointer;
}
.content-index .page-indicators .page-indicators-container {
    position: relative;
    height: 100%;
    display: inline-flex;
    align-items: center;
    gap: var(--page-indicators-gap);
    transform-origin: center;
    pointer-events: auto;
    transition: transform 0.2s ease;
}
.content-index .page-indicators .page-indicators-container .page-indicator {
    flex-shrink: 0;
    box-sizing: border-box;
    width: var(--page-indicator-width);
    height: 12px;
    border-radius: 0;
    background-color: var(--color-inactive);
}
.content-index .page-indicators .page-indicators-container .page-indicator.active {
    background-color: var(--color-medium);
}

/* content of clippings page */
.content-clippings {
    height: auto;
}
.content-clippings .clippings-zone {
    height: 100%;
    position: relative;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-gutter: stable;
}
.content-clippings .clippings-zone .clipping-card {
    position: absolute;
    pointer-events: all;
    width: var(--clipping-card-min-width);
    cursor: pointer;
    opacity: 1;
    transform: scale(1);
    z-index: 1;
    transform-origin: center;
    user-select: none; /* avoid messing with flipping and drag */
}
.content-clippings .clippings-zone .clipping-card .front, .content-clippings .clippings-zone .clipping-card .back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    transform-style: preserve-3d;
    transform-origin: center;
    box-sizing: border-box;
    overflow: hidden;
    transition: transform calc(var(--clipping-card-flip-duration) / 2) linear;
    line-height: var(--clipping-card-line-height);
}
.content-clippings .clippings-zone .clipping-card .front {
    transform: scaleX(1);
    transition-delay: calc(var(--clipping-card-flip-duration) / 2);
    z-index: 1;
    background: var(--canvas-image-reverse-side-color);
    border: 1px solid var(--color-medium);
}
.content-clippings .clippings-zone .clipping-card .front .clipping-content {
    font-family: var(--base-font-family);
    font-size: var(--clipping-card-front-font-size);
    padding: var(--clipping-card-content-padding);
    hanging-punctuation: first last;
}
.content-clippings .clippings-zone .clipping-card .back {
    transform: scaleX(0);
    transition-delay: 0s;
    z-index: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--color-dark);
    color: var(--color-medium);
}
.content-clippings .clippings-zone .clipping-card .back .cite-content {
    font-family: var(--ital-font-family);
    font-style: italic;
    font-size: var(--clipping-card-back-font-size);
    padding: 8%;
    box-sizing: border-box;
    hanging-punctuation: first last;
}
.content-clippings .clippings-zone .clipping-card .back .cite-content a {
    color: var(--color-light);
}
.content-clippings .clippings-zone .clipping-card .back .cite-content a:hover {
    color: var(--color-medium);
}
.content-clippings .clippings-zone .clipping-card:hover {
    z-index: 999 !important;
}
.content-clippings .clippings-zone .clipping-card.flipped {
    z-index: 1000 !important; /* Ensure flipped cards stay on top of hovered cards */
}
.content-clippings .clippings-zone .clipping-card.flipped .front {
    transform: scaleX(0);
    transition-delay: 0s;
    z-index: 0;
}
.content-clippings .clippings-zone .clipping-card.flipped .back {
    transform: scaleX(1);
    transition-delay: calc(var(--clipping-card-flip-duration) / 2);
    z-index: 1;
}
.content-clippings .section-nav {
    position: sticky;
    top: 0;
    right: 0;
    width: var(--clipping-card-min-width);
    margin-left: auto;
    z-index: 1002;
    background-color: var(--color-medium);
    counter-reset: item;
    list-style-position: inside;
    text-align: center;
    user-select: none;
    box-sizing: border-box;
    transform: none;
    align-self: flex-start;
    overflow: hidden;
    transition: max-height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    max-height: 1000px;
}
.content-clippings .section-nav header {
    font-size: var(--clipping-card-front-font-size);
    justify-content: normal;
    padding: calc(var(--clipping-card-content-padding) * 0.5) var(--clipping-card-content-padding);
}
.content-clippings .section-nav .section-nav-list {
    padding: var(--clipping-card-content-padding);
    padding-top: calc(var(--clipping-card-content-padding) / 2);
}
.content-clippings .section-nav .section-nav-list li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 10px;
    font-family: var(--base-font-family);
    color: var(--color-dark);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    white-space: nowrap;
    display: block;
    width: 100%;
    user-select: none;
}
.content-clippings .section-nav .section-nav-list li::before {
    content: counter(item);
    counter-increment: item;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: var(--clipping-card-front-font-size);
    height: var(--clipping-card-front-font-size);
    line-height: var(--clipping-card-front-font-size);
    font-size: calc(var(--clipping-card-front-font-size) * 0.625);
    border-radius: 50%;
    background-color: transparent;
    color: var(--color-dark);
    border: 1px solid var(--color-dark);
    display: flex;
    align-items: center;
    justify-content: center;
}
.content-clippings .section-nav .section-nav-list li.active::before {
    background-color: var(--color-dark);
    color: var(--color-medium);
}
.content-clippings .section-nav .section-nav-list li:hover {
    opacity: 0.5;
}
.content-clippings .section-nav .section-nav-list li.inactive {
    opacity: 0.5;
}
.content-clippings .section-nav.collapsed {
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    max-height: 0; /* Height of collapsed state */
}
.content-clippings .clippings-zone.sorted-layout {
    column-count: auto;
    column-gap: 0;
    backface-visibility: hidden;
    transform: translateZ(0);
}
.content-clippings .clippings-zone.sorted-layout .clipping-card .front {
    border-right: none;
    border-bottom: none;
}

/* content of about page */
.content-about {
    --main-padding: calc(var(--content-about-font-size) * 1.333);
    --half-padding: calc(var(--main-padding) * 0.5);
    --double-padding: calc(var(--main-padding) * 2);
    /* Hide scrollbar for Firefox */
    scrollbar-width: none;
    /* Hide scrollbar for IE and Edge */
    -ms-overflow-style: none;
    overflow-y: auto;

    display: grid;
    height: calc(100vh - var(--header-height));

    grid-template-columns:
        minmax(0, 1fr)    /* Left images column */
        minmax(auto, min(50%, 768px)) /* Middle text column (original width) */
        minmax(0, 1fr);   /* Right images column */
    gap: var(--main-padding); /* Space between columns */
}
.content-about h1, .content-about h2, .content-about p, .content-about header {
    font-size: var(--content-about-font-size);
    line-height: 1.4;
    font-weight: normal;
}
.content-about .middle-column {
    font-size: var(--content-about-font-size);
    padding: var(--main-padding);
    padding-bottom: var(--main-padding);
    hanging-punctuation: first last;
}
.content-about .image-column {
    display: flex;
    flex-direction: column;
    gap: var(--double-padding);
    padding-top: var(--main-padding);
    position: relative;
}
.content-about .left-images {
    grid-column: 1;
    align-items: flex-end;
    padding-right: var(--main-padding);
}
.content-about .right-images {
    grid-column: 3;
    align-items: flex-start;
    padding-left: var(--main-padding);
}
.content-about .image-wrapper {
    position: absolute;
    width: 50%;
    max-width: 300px;
    opacity: 0;
    transition: opacity 1s cubic-bezier(0.4, 0, 0.2, 1);
}
.content-about .image-wrapper.visible {
    opacity: 1;
}
.content-about .image-wrapper img {
    width: 100%;
    height: auto;
}
/* Hide scrollbar for Chrome, Safari and Opera */
.content-about::-webkit-scrollbar {
    display: none;
}

.content-about p > a {
    text-decoration: underline;
}

.content-about p > a:hover {
    border-bottom: none;
    opacity: 0.8;
}

@media (max-width: 768px) {
    .content-about {
        gap: 0;
        grid-template-columns:
        minmax(0, 1fr)    /* Left images column */
        minmax(auto, min(75%, 768px)) /* Middle text column (original width) */
        minmax(0, 1fr);   /* Right images column */

    }
    .content-about .middle-column {
        padding: var(--half-padding);
        padding-bottom: calc(var(--main-padding) * 4);
    }
    .content-about .image-wrapper {
        width: 100%;
    }
    .content-about .left-images {
        padding-right: 0;
        background-color: var(--color-dark);
    }
    .content-about .right-images {
        padding-left: 0;
        background-color: var(--color-dark);
    }
}


/* side link panels */
.side-link-panel {
    position: fixed;
    top: 0;
    bottom: 0;
    width: var(--side-panel-width);
    z-index: 1003;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    text-decoration: none;
}
.side-link-panel span {
    white-space: nowrap;
    font-size: var(--side-panel-font-size);
    transform-origin: center;
    margin-top: var(--side-panel-text-offset);
}
.side-link-panel:hover {
    width: var(--side-panel-expanded-width);
}
.left-side-link-panel {
    left: 0;
    writing-mode: vertical-lr;
}
.left-side-link-panel span {
    transform: rotate(-180deg);
}
.right-side-link-panel {
    right: 0;
    writing-mode: vertical-rl;
}

/* footer (only index page) */
.footer {
    height: var(--footer-height);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    grid-row: 2;
    grid-column: 1 / -1; /* Span all columns */
    /*width: 100%;*/
    background-color: var(--color-dark);
    border: 1px solid var(--color-medium);
}
.footer .footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--footer-content-gap);
    height: 100%;
    padding: 0 calc(2 * var(--side-panel-width));
    width: 100%;
}
.footer .footer-content .oceanic-indicator {
    flex: 1;
    max-width: 30%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.footer .footer-content .oceanic-indicator .indicator-label {
    font-family: var(--base-font-family);
    text-align: center;
    margin-bottom: 4px;
    color: var(--color-medium);
    font-size: var(--oceanic-indicator-font-size);
    text-decoration: none;
    cursor: pointer;
}
.footer .footer-content .oceanic-indicator .indicator-bar {
    position: relative;
    height: var(--foooter-indicator-height);
    background-color: var(--color-medium);
    overflow: visible;
    margin-bottom: 4px;
}
.footer .footer-content .oceanic-indicator .indicator-bar .indicator-value {
    position: absolute;
    top: 0;
    height: 100%;
    width: 5%;
    background-color: var(--color-light);
    transition: left 0.5s ease;
    transform: translateX(-50%);
    left: 0;
}