@import url('https://fonts.googleapis.com/css2?family=Open+Sans:ital,wght@0,300..800;1,300..800&display=swap');

* {
    box-sizing: border-box;
}

:is(html, body) {
    padding: 0;
    margin: 0;
    background: var(--background-color);
    color: var(--text-color);
    font-family: var(--font-ui);
    line-height: 1.55;
    scroll-behavior: smooth;
    /* overflow-x: hidden; */
}

:is(img, video) {
    height: 100%;
    max-width: 100%;
    object-fit: cover;
    border-radius: 0.5rem;
}

a {
    color: var(--accent-color);
    text-decoration: none;
}

/***** HEADER/TOP-NAVIGATION SECTION *****/
header {
    display: flex;
    position: sticky;
    top: 0;
    padding: 0 1rem;
    align-items: center;
    z-index: 1;
    background-color: color-mix(in oklab, var(--background-color) 90%, transparent);
    backdrop-filter: saturate(120%) blur(0.375rem);
    justify-content: space-between;
    transition: all 0.3s ease;

    & :is(.col-1, .col-2) {
        display: flex;
    }

    & .col-1 {
        gap: 1.4rem;
        user-select: none;
    }

    & .logo-link {
        cursor: pointer;
        color: var(--text-black);
        text-decoration: none;
    }

    & .col-1 label {
        font-size: 1.2rem;
        font-weight: 500;

        & span {
            font-weight: 600;
        }
    }

    & .col-2 label {
        font-size: 0.9rem;
        font-weight: 500;
        cursor: pointer;
        position: relative;
        padding: 1rem 1.2rem;
        height: 100%;
        text-align: center;
        transition: all 0.3s ease;
        
        &::after {
            content: "";
            position: absolute;
            margin-bottom: 0.4rem;
            left: 50%;
            transform: translate(-50%);
            width: 70%;
            bottom: 0;
            height: 0;
            background: red;
            border-top-right-radius: 10rem;
            border-top-left-radius: 10rem;
            border-bottom: 0;
            transition: all 0.3s ease;
        }
    }

    & .theme-btn {
        border: none;
        color: #fff;
        cursor: pointer;
        text-align: center;
        margin: 0.4rem 0;
        padding: 0.4rem 0.7rem;
        border-radius: 10rem;
        box-shadow: var(--shadow-attr);
        background: var(--accent-color);
        transition: all 0.3s ease;
    }

    &:is(#home-content, #explore-content, #nearby-content) {
        width: 100%;
    }

    & .action {
        display: flex;
        align-items: center;
        gap: 0.45rem;
    }
}

:root[data-theme="dark"] header .theme-btn {
    color: #201b13;
    background: var(--accent-2-color);
}

.menu-btn {
    position: relative;
    display: none;
    cursor: pointer;
    user-select: none;
    font-size: 1.25rem;
    line-height: 1;
    padding: 0.35rem 0.6rem;
    border-radius: 0.5rem;
    border: 0.1rem solid var(--border-color);
    background: var(--panel-color);

    &::before {
        content: "☰";
        font-size: 1.1rem;
        line-height: 1;
    }
}

header:has(#navToggle:checked) .menu-btn::before {
    content: "✕";
}

header.scrolled {
    box-shadow: 0 0.2rem 0.2rem rgba(0, 0, 0, 0.1)
}

#home:checked ~ header .col-2 label[for="home"],
#exhibitions:checked ~ header .col-2 label[for="exhibitions"],
#stories:checked ~ header .col-2 label[for="stories"],
#map:checked ~ header .col-2 label[for="map"],
#about:checked ~ header .col-2 label[for="about"] {
    color: red;
}

#home:checked ~ header .col-2 label[for="home"]::after,
#exhibitions:checked ~ header .col-2 label[for="exhibitions"]::after,
#stories:checked ~ header .col-2 label[for="stories"]::after,
#map:checked ~ header .col-2 label[for="map"]::after,
#about:checked ~ header .col-2 label[for="about"]::after {
    height: 0.2rem;
}

#home:checked ~ .content-container #home-content,
#exhibitions:checked ~ .content-container #exhibitions-content,
#stories:checked ~ .content-container #stories-content,
#map:checked ~ .content-container #map-content,
#about:checked ~ .content-container #about-content {
    display: block;
}

header .col-2 label[for="home"]:active,
header .col-2 label[for="exhibitions"]:active,
header .col-2 label[for="stories"]:active,
header .col-2 label[for="collections"]:active,
header .col-2 label[for="map"]:active {
    background-color: var(--background-lightgrey);
}

.content-container > section {
    display: none;
}

.content-container {
    max-width: var(--max-width);
    margin: 2rem auto;
    padding: 0 var(--space-3);
}



/***** SECTIONS SECTION *****/
:is(#home-content, #exhibitions-content, #stories-content, #collections-content, #map-content) {
    animation:slide-in-top 0.5s ease-in-out both
}

section {
    padding: var(--space-5) 0;
}

#home-content {
    background-color: var(--background-white);
}

#explore-content {
    background-color: var(--background-white);
}

#nearby-content {
    background-color: var(--background-white);
}

.hero {
    display: flex;
    gap: var(--space-4);
    transition: all 0.3s ease;

    & .home-title {
        font-family: var(--font-reading);
        font-size: clamp(1.75rem, 4vw, 2.75rem);
        line-height: 1.2;
        margin: 0;
    }

    & p {
        color: var(--muted-color);
        max-width: 60ch;
    }
}

.panel {
    background: var(--panel-color);
    border-radius: var(--radius-attr);
    box-shadow: var(--shadow-attr);
    padding: var(--space-4);
    border: 0.1rem solid var(--border-color);
    transition: all 0.3s ease;
}

.mosaic {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.5rem;

    & img {
        aspect-ratio: 1/1;
        border-radius: 0.5rem;
        border: 0.1rem solid var(--border-color);
        background: linear-gradient(135deg, #dbe7e6, #f2e9dd);
    }
}

.tiles {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3);
    transition: all 0.3s ease;

    & .tile {
        display: flex;
        flex-direction: column;
        overflow: hidden;
        color: var(--accent-color);
        border-radius: 0.75rem;
        background: var(--panel-color);
        box-shadow: 0.2rem 0.2rem 0.2rem rgba(0, 0, 0, 0.25);
        border: 1px solid var(--border-color);
        transition: all 0.3s ease;

        &:hover {
            transform: translateY(0.1rem);
        box-shadow: 0.1rem 0.1rem 0.1rem rgba(0, 0, 0, 0.25);
        }

        & img {
            display: block;
        }

        & .body {
            padding: 1rem;
        }
    }
}

.subtle {
    color: var(--muted-color);
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.ref-btns {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    
}

.ref {
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 800;
    color: #0c6d6b;
    padding: 0.3rem 0.6rem;
    border-radius: 10rem;
    border: 0.1rem solid #d4eceb;
    background: #eef7f7;
    transition: all 0.3s ease;

    &:not(.tk):active {
        background-color: #a9f4f4;
    }
}

.ref.tk {
    color: #704a11;
    border-color: #e6dcc6;
    background: #f3efe7;

    &:active {
        background-color: #fee4b0;
    }
}

:root[data-theme="dark"] .ref {
    background: #123a39;
    border-color: #205a58;
    color: #8fe7e3;

    &:active {
        background-color: rgb(7, 27, 27);
    }
}

:root[data-theme="dark"] .ref.tk {
    color: #e8c89b;
    border-color: #4b3a22;
    background: #2a241a;

    &:active {
        background-color: #201b13;
    }
}

.grid {
    display: grid;
    gap: var(--space-3);
}

.grid-2 {
    grid-template-columns: 1fr;
    gap: var(--space-3);
}

.grid-3 {
    grid-template-columns: 1fr;
    gap: var(--space-3);
}

.card {
    overflow: hidden;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    box-shadow: 0.2rem 0.2rem 0.2rem rgba(0, 0, 0, 0.25);
    background: var(--panel-color);
    transition: all 0.3s ease;

    &:hover {
        box-shadow: 0.1rem 0.1rem 0.1rem rgba(0, 0, 0, 0.25);
    }

    & .body {
        padding: 1rem;
    }
}

.page-title {
    font-family: var(--font-reading);
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    margin: 0 0 0.5rem;
    transition: all 0.3s ease;
}


/***** EXHIBIT SECTIONS *****/
.exhibit {
    display: grid;
    grid-template-columns: 17.5rem 1fr;
    gap: var(--space-4);
    transition: all 0.3s ease;
}

.toc {
    position: sticky;
    top: 5.5rem;
    padding: 16px;
    height: fit-content;
    border-radius: 0.75rem;
    border: 0.1rem solid var(--border-color);
    background: var(--panel-color);
    transition: all 0.3s ease;

    & a {
        display: block;
        color: var(--text-color);
        padding: 0.3rem 0;
        transition: all 0.3s ease;
    }

    & a:hover {
        color: var(--accent-color);
    }
}


/***** STORIES SECTION *****/
.blockquote {
    background: #f8f2ea;
    padding: 0.75rem;
    border-radius: 0.3rem;
    border-left: 0.25rem solid var(--earth-color);
    transition: all 0.3s ease;
}

:root[data-theme="dark"] .blockquote {
    background: #201b13;
}

.story-meta {
    margin-top: -0.25rem;
    font-size: 0.9rem;
    color: var(--muted-color);
}

.callout {
    margin-top: 0.75rem;
    padding: 0.75rem 1rem;
    border: 0.1rem solid var(--border-color);
    border-left: 0.3rem solid var(--accent-color);
    border-radius: 0.5rem;
    background: color-mix(in oklab, var(--accent-color) 6%, var(--panel-color));
}
:root[data-theme="dark"] .callout {
    background: color-mix(in oklab, var(--accent-color) 10%, #0f1c23);
    border-color: #1f3a3a;
}

/***** MAP SECTION *****/
.map-input {
    display: none;
}

.map-views {
    position: relative;
    min-height: 32.5rem;
    
    & iframe {
        display: none;
        position: absolute;
        inset: 0;
        width: 100%;
        height: 32.5rem;
        border-radius: 0.75rem;
        border: 0.1rem solid var(--border-color);
    }
}

#tab-bokod:checked ~ .map-views .view-bokod,
#tab-bontoc:checked ~ .map-views .view-bontoc,
#tab-ambuklao:checked ~ .map-views .view-ambuklao,
#tab-origin:checked ~ .map-views .view-origin {
    display: block;
}

#tab-bokod:checked + label[for="tab-bokod"],
#tab-bontoc:checked + label[for="tab-bontoc"],
#tab-ambuklao:checked + label[for="tab-ambuklao"],
#tab-origin:checked + label[for="tab-origin"] {
    outline: 0.125rem solid var(--accent-color);
    outline-offset: 0.125rem;
}


/***** STORIES SECTION *****/
.story-index {
    display: grid;
    gap: var(--space-3);
    grid-template-columns: 1fr;

    & a.story-tile {
        display: grid;
        grid-template-rows: auto 1fr;

        & img {
            object-fit: cover;
            aspect-ratio: 16/9;
        }
    }
}


.story-section {
    scroll-margin-top: 5.5rem;

    & h2 {
        margin-top: 0;
    }

    &:target {
        outline: 0.125rem solid var(--accent-color);
        border-radius: var(--radius-attr);
        box-shadow: 0 0 0 0.375rem color-mix(in oklab, var(--accent-color) 20%, transparent);
    }
}

.story-full details {
    border-radius: 0.75rem;
    border: 0.1rem solid var(--border-color);
    background: var(--panel-color);
    margin-top: 0.75rem;
    box-shadow: var(--shadow-attr);
}

.story-full summary {
    display: inline-flex;
    align-items: center;
    list-style: none;
    cursor: pointer;
    font-weight: 800;
    user-select: none;
    gap: 0.5rem;
    margin: 0.75rem;
    padding: 0.6rem 0.8rem;
    border-radius: 10rem;
    border: 0.1rem solid var(--border-color);
    background: color-mix(in oklab, var(--accent-color) 8%, var(--panel-color));
}

.story-full details[open] summary {
    background: color-mix(in oklab, var(--accent-color) 14%, var(--panel-color));
}

.story-full summary .hide,
.story-full details[open] summary .show {
    display: none;
}

.story-full details[open] summary .hide {
    display: inline;
}

.story-full .fulltext {
    padding: 0 1rem 1rem 1rem;
    line-height: 1.7;
}

.story-full .fulltext p {
    margin: 0.75rem 0;
}

.story-nav {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
}

#stories-content .story-section {
    display: none;
}

#stories-content:has(.story-section:target) .story-index {
    display: none;
}

#stories-content .story-section:target {
    display: block;
}

.viewing-badge {
    z-index: 3;
    display: none;
    position: sticky;
    width: max-content;
    top: 5.5rem;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    padding: 0.375rem 1rem;
    border-radius: 10rem;
    border: 0.1rem solid var(--border-color);
    box-shadow: var(--shadow-attr);
    background: color-mix(in oklab, var(--accent-color) 8%, var(--panel-color));

    &::before {
        content: "You're viewing: ";
        opacity: 0.85;
        margin-right: 0.25rem;
    }

    &::after {
        content: attr(data-title);
    }
}

:root[data-theme="dark"] .viewing-badge {
    border-color: #1f3a3a;
    background: color-mix(in oklab, var(--accent-color) 12%, #0f1c23);
}

.story-section:target .viewing-badge {
    display: inline-flex;
}


/***** ABOUT US SECTION *****/
.teams li {
    font-weight: 800;
}



/***** FOOTER SECTION *****/
footer {
    margin-top: var(--space-5);
    border-top: 0.1rem solid var(--border-color);
    background: color-mix(in oklab, var(--background-color) 90%, var(--panel-color));

    & .linklist {
        list-style: none;
        padding: 0;
        margin: 0;

        & li {
            margin: 0.25rem 0;
        }

        & a {
            color: var(--text-color);

            &:hover {
                color: var(--accent-color);
            }
        }
    }

    & .footnote {
        padding: var(--space-2) 0;
        border-top: 0.1rem solid var(--border-color);
    }
}

.footgrid {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
    padding: var(--space-2) 0;

    & .col h4 {
        margin: 0 0 0.5rem;
    }

    & .col p {
        margin: 0.25rem 0;
    }
}

/***** ANIMATIONS SECTION *****/
@keyframes slide-in-top{0%{transform:translateY(-6px);opacity:0}100%{transform:translateY(0);opacity:1}}


/***** RESPONSIVE SECTION *****/ 
@media (min-width: 720px){
    .hero {
        grid-template-columns:1.2fr 1fr;
    }

    .tiles {
        grid-template-columns: repeat(3, 1fr);
    }

    .grid-2 {
        grid-template-columns: 1.2fr 1fr;
    }

    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }

    .story-index {
        grid-template-columns: repeat(3, 1fr);
    }

    .footgrid {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

@media (min-width: 821px) {

    .menu-btn {
        display: none;
    }

    header .col-2 {
        display: flex;
    }
}

@media (max-width: 820px) {
    header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0.25rem;
        padding: 0.25rem 0.75rem;

        & .logo-link {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: calc(100% - 7.5rem);
        }

        & .col-1 {
            justify-content: space-between;
            min-width: 0;
        }

        & .col-2 {
            display: block;
            overflow: hidden;
            visibility: hidden;
            pointer-events: none;
            max-height: 0;
            opacity: 0;
            padding: 0.35rem 0 0.5rem 0;
            border-top: 0.1rem solid var(--border-color);
            transform: translateX(100%);
            transition: all 0.3s ease;

        }

        &:has(#navToggle:checked) .col-2 {
            visibility: visible;
            pointer-events: auto;
            max-height: 50vh;
            opacity: 1;
            transform: translateX(0);
            transition: all 0.3s ease;
        }

        & .menu-btn {
            display: inline-flex;
        }
    }

    header .col-2 label.nav-item {
        display: block;
        text-align: left;
        padding: 0.9rem 0.75rem;
        height: auto;
        border-radius: 0.5rem;
    
        &::after {
            display: none;
        }
    }

    .toc {
        position: static;
    }

    .footgrid {
        padding: var(--space-4);
    }
}


@media(max-width: 960px) {
    .exhibit {
        grid-template-columns: 1fr;
    }
}