/* ==========================================================
   LITTLE EXPLORERS LEARNING HUB
   SCIENCE & STEM RESOURCE LIBRARY
   /styles/science-library.css
========================================================== */


/* ==========================================================
   RESET / FOUNDATION
========================================================== */

.science-library-page,
.science-library-page *,
.science-library-page *::before,
.science-library-page *::after {
    box-sizing: border-box;
}

.science-library-page {
    --science-green: #2f7d5a;
    --science-green-dark: #205c42;
    --science-green-light: #e9f5ee;

    --science-blue: #2878a8;
    --science-blue-dark: #1d587d;
    --science-blue-light: #e8f4fa;

    --science-teal: #269b9b;
    --science-teal-light: #e7f7f7;

    --science-yellow: #e5ad38;
    --science-yellow-light: #fff6dc;

    --science-orange: #d97835;
    --science-orange-light: #fff0e5;

    --science-purple: #7657a6;
    --science-purple-light: #f1ebfa;

    --science-text: #24342d;
    --science-muted: #607068;
    --science-border: #dce9e1;

    margin: 0;
    padding: 0;

    background:
        linear-gradient(
            180deg,
            #f8fbf7 0%,
            #ffffff 35%,
            #f8fbf7 100%
        );

    color: var(--science-text);

    font-family:
        "Inter",
        Arial,
        sans-serif;

    line-height: 1.6;
}

.science-library-page body {
    margin: 0;
}

.science-library-page h1,
.science-library-page h2,
.science-library-page h3,
.science-library-page h4,
.science-library-page p {
    margin-top: 0;
}

.science-library-page img {
    display: block;
    max-width: 100%;
}

.science-library-page a {
    transition:
        color .2s ease,
        background-color .2s ease,
        border-color .2s ease,
        transform .2s ease,
        box-shadow .2s ease;
}

.science-library-page button {
    font: inherit;
}

.science-library-page .container {
    width: min(1180px, 92%);
    margin-inline: auto;
}


/* ==========================================================
   HEADER
========================================================== */

.science-library-page header {
    position: relative;
    z-index: 1000;

    width: 100%;

    background: #ffffff;

    border-bottom:
        1px solid var(--science-border);
}

.science-library-page .nav-container {
    width: min(1180px, 92%);
    min-height: 78px;

    margin-inline: auto;

    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: 25px;
}

.science-library-page .logo {
    display: flex;
    align-items: center;

    gap: 12px;

    min-width: 0;

    color: inherit;
    text-decoration: none;
}

.science-library-page .logo img {
    width: 54px;
    height: 54px;

    flex: 0 0 54px;

    object-fit: contain;
}

.science-library-page .logo h1 {
    margin: 0;

    color: var(--science-green-dark);

    font-family: "Nunito", sans-serif;

    font-size: 1.45rem;
    font-weight: 800;

    line-height: 1;
}

.science-library-page .logo span {
    display: block;

    margin-top: 4px;

    color: var(--science-blue);

    font-size: .9rem;
    font-weight: 600;
}


/* ==========================================================
   DESKTOP NAVIGATION
========================================================== */

.science-library-page nav {
    display: block;
}

.science-library-page nav ul {
    display: flex;
    align-items: center;

    gap: 8px;

    margin: 0;
    padding: 0;

    list-style: none;
}

.science-library-page nav li {
    margin: 0;
    padding: 0;
}

.science-library-page nav a {
    display: block;

    padding: 10px 14px;

    border-radius: 10px;

    color: var(--science-text);

    text-decoration: none;

    font-weight: 700;
}

.science-library-page nav a:hover {
    background: var(--science-green-light);
    color: var(--science-green-dark);
}

.science-library-page nav a.active {
    background: var(--science-green);
    color: #ffffff;
}


/* ==========================================================
   MOBILE MENU
========================================================== */

.science-library-page .mobile-menu {
    display: none;

    width: 48px;
    height: 48px;

    align-items: center;
    justify-content: center;

    margin-left: auto;
    padding: 0;

    border: 0;
    border-radius: 10px;

    background: transparent;

    color: var(--science-green-dark);

    font-size: 1.8rem;

    cursor: pointer;
}

.science-library-page .mobile-menu:hover {
    background: var(--science-green-light);
}


/* ==========================================================
   HERO
========================================================== */

.science-library-page .study-hero {
    position: relative;

    overflow: hidden;

    padding: 90px 0 100px;

    background:
        radial-gradient(
            circle at 10% 20%,
            rgba(38,155,155,.18),
            transparent 30%
        ),
        radial-gradient(
            circle at 90% 15%,
            rgba(229,173,56,.18),
            transparent 28%
        ),
        linear-gradient(
            135deg,
            #edf8f1 0%,
            #eaf6fa 50%,
            #fffaf0 100%
        );

    border-bottom:
        1px solid var(--science-border);
}

.science-library-page .study-hero::after {
    content: "";

    position: absolute;

    width: 280px;
    height: 280px;

    right: -100px;
    bottom: -140px;

    border-radius: 50%;

    background:
        rgba(47,125,90,.08);

    pointer-events: none;
}

.science-library-page .breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;

    gap: 8px;

    margin-bottom: 25px;

    font-size: .9rem;
}

.science-library-page .breadcrumb a {
    color: var(--science-blue-dark);

    font-weight: 700;

    text-decoration: none;
}

.science-library-page .breadcrumb a:hover {
    color: var(--science-green);
}

.science-library-page .breadcrumb span {
    color: var(--science-muted);
}

.science-library-page .study-hero .section-label {
    display: inline-flex;

    max-width: 100%;

    padding: 8px 14px;

    margin-bottom: 18px;

    border:
        1px solid rgba(47,125,90,.18);

    border-radius: 999px;

    background:
        rgba(47,125,90,.10);

    color: var(--science-green-dark);

    font-size: .78rem;
    font-weight: 800;

    letter-spacing: .08em;
}

.science-library-page .study-hero h1 {
    max-width: 900px;

    margin: 0 0 22px;

    color: var(--science-green-dark);

    font-family: "Nunito", sans-serif;

    font-size:
        clamp(2.3rem, 5vw, 4.4rem);

    line-height: 1.05;
}

.science-library-page .study-hero > .container > p {
    max-width: 850px;

    margin: 0;

    color: var(--science-text);

    font-size: 1.12rem;

    line-height: 1.8;
}


/* ==========================================================
   HERO BUTTONS
========================================================== */

.science-library-page .hero-buttons {
    display: flex;
    flex-wrap: wrap;

    gap: 14px;

    margin-top: 30px;
}

.science-library-page .btn {
    display: inline-flex;

    align-items: center;
    justify-content: center;

    min-height: 48px;

    padding: 12px 20px;

    border-radius: 12px;

    text-decoration: none;

    font-weight: 800;
}

.science-library-page .btn-primary {
    background: var(--science-green);

    color: #ffffff;

    box-shadow:
        0 8px 18px rgba(47,125,90,.20);
}

.science-library-page .btn-primary:hover {
    background: var(--science-green-dark);

    transform: translateY(-2px);
}

.science-library-page .btn-secondary {
    background: #ffffff;

    color: var(--science-blue-dark);

    border:
        1px solid var(--science-border);
}

.science-library-page .btn-secondary:hover {
    background: var(--science-blue-light);

    border-color: var(--science-blue);

    transform: translateY(-2px);
}


/* ==========================================================
   FEATURED STUDY
========================================================== */

.science-library-page .featured-study {
    padding: 90px 0;
}

.science-library-page .featured-study-card {
    display: grid;

    grid-template-columns:
        minmax(0, .95fr)
        minmax(0, 1.05fr);

    align-items: center;

    gap: 45px;

    padding: 28px;

    background: #ffffff;

    border:
        1px solid var(--science-border);

    border-radius: 26px;

    box-shadow:
        0 12px 32px rgba(32,75,55,.10);
}

.science-library-page .featured-image {
    overflow: hidden;

    width: 100%;

    border-radius: 20px;

    background:
        var(--science-green-light);
}

.science-library-page .featured-image img {
    width: 100%;

    aspect-ratio: 4 / 3;

    object-fit: cover;
}

.science-library-page .featured-text {
    padding: 10px;
}

.science-library-page .featured-label {
    display: inline-block;

    margin-bottom: 14px;

    color: var(--science-teal);

    font-size: .78rem;
    font-weight: 800;

    letter-spacing: .08em;
}

.science-library-page .featured-text h2 {
    margin: 0 0 18px;

    color: var(--science-green-dark);

    font-family: "Nunito", sans-serif;

    font-size:
        clamp(1.8rem, 3vw, 2.8rem);

    line-height: 1.15;
}

.science-library-page .featured-text p {
    margin: 0 0 25px;

    color: var(--science-muted);

    line-height: 1.8;
}


/* ==========================================================
   HIGHLIGHTS
========================================================== */

.science-library-page .featured-highlights {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 10px;
}

.science-library-page .featured-highlights div {
    padding: 12px 14px;

    border:
        1px solid var(--science-border);

    border-left-width: 4px;

    border-radius: 12px;

    background: var(--science-cream);

    color: var(--science-text);

    font-weight: 700;
}

.science-library-page .featured-highlights div:nth-child(1) {
    border-left-color: var(--science-green);
}

.science-library-page .featured-highlights div:nth-child(2) {
    border-left-color: var(--science-blue);
}

.science-library-page .featured-highlights div:nth-child(3) {
    border-left-color: var(--science-orange);
}

.science-library-page .featured-highlights div:nth-child(4) {
    border-left-color: var(--science-purple);
}

.science-library-page .featured-highlights div:nth-child(5) {
    border-left-color: var(--science-yellow);
}

.science-library-page .featured-highlights div:nth-child(6) {
    border-left-color: var(--science-teal);
}

.science-library-page .featured-highlights div:nth-child(7) {
    border-left-color: var(--science-blue);
}

.science-library-page .featured-highlights div:nth-child(8) {
    border-left-color: var(--science-green);
}


/* ==========================================================
   SECTIONS
========================================================== */

.science-library-page .study-section {
    padding: 90px 0;
}

.science-library-page .study-section.alternate {
    background:
        linear-gradient(
            180deg,
            #f1f8f3 0%,
            #eef7fa 100%
        );

    border-top:
        1px solid var(--science-border);

    border-bottom:
        1px solid var(--science-border);
}

.science-library-page .section-header {
    max-width: 820px;

    margin: 0 auto 45px;

    text-align: center;
}

.science-library-page .section-header .section-label {
    display: inline-block;

    margin-bottom: 12px;

    color: var(--science-green);

    font-size: .78rem;
    font-weight: 800;

    letter-spacing: .08em;
}

.science-library-page .section-header h2 {
    margin: 0 0 14px;

    color: var(--science-green-dark);

    font-family: "Nunito", sans-serif;

    font-size:
        clamp(1.9rem, 4vw, 3rem);

    line-height: 1.15;
}

.science-library-page .section-header p {
    margin: 0;

    color: var(--science-muted);

    line-height: 1.75;
}


/* ==========================================================
   IMPORTANT: STEM CARD GRID
========================================================== */

.science-library-page .study-grid {
    display: grid !important;

    grid-template-columns:
        repeat(3, minmax(0, 1fr)) !important;

    align-items: stretch;

    gap: 25px;

    width: 100%;
}


/* ==========================================================
   STUDY CARDS
========================================================== */

.science-library-page .study-card {
    display: flex;

    flex-direction: column;

    min-width: 0;

    width: 100%;
    height: 100%;

    overflow: hidden;

    background: #ffffff;

    border:
        1px solid var(--science-border);

    border-radius: 20px;

    box-shadow:
        0 8px 24px rgba(32,75,55,.07);

    transition:
        transform .25s ease,
        box-shadow .25s ease,
        border-color .25s ease;
}

.science-library-page .study-card:hover {
    transform: translateY(-7px);

    box-shadow:
        0 18px 40px rgba(32,75,55,.16);

    border-color:
        rgba(47,125,90,.30);
}

.science-library-page .study-card > img {
    display: block;

    width: 100%;
    height: auto;

    aspect-ratio: 16 / 10;

    object-fit: cover;

    background:
        var(--science-green-light);
}

.science-library-page .study-content {
    display: flex;

    flex-direction: column;

    flex: 1;

    min-width: 0;

    padding: 24px;
}

.science-library-page .study-content h3 {
    margin: 0 0 12px;

    color: var(--science-green-dark);

    font-family: "Nunito", sans-serif;

    font-size: 1.35rem;

    line-height: 1.25;
}

.science-library-page .study-content p {
    margin: 0;

    color: var(--science-muted);

    line-height: 1.7;
}

.science-library-page .study-footer {
    margin-top: auto;

    padding-top: 22px;
}

.science-library-page .study-footer a {
    display: inline-flex;

    align-items: center;

    gap: 6px;

    color: var(--science-blue-dark);

    font-weight: 800;

    text-decoration: none;
}

.science-library-page .study-footer a:hover {
    color: var(--science-green);

    transform: translateX(3px);
}


/* CARD ACCENTS */

.science-library-page .study-card:nth-child(1) {
    border-top: 5px solid var(--science-green);
}

.science-library-page .study-card:nth-child(2) {
    border-top: 5px solid var(--science-yellow);
}

.science-library-page .study-card:nth-child(3) {
    border-top: 5px solid var(--science-orange);
}

.science-library-page .study-card:nth-child(4) {
    border-top: 5px solid var(--science-blue);
}

.science-library-page .study-card:nth-child(5) {
    border-top: 5px solid var(--science-purple);
}

.science-library-page .study-card:nth-child(6) {
    border-top: 5px solid var(--science-teal);
}


/* ==========================================================
   INTEREST GRID
========================================================== */

.science-library-page .interest-grid {
    display: grid !important;

    grid-template-columns:
        repeat(4, minmax(0, 1fr)) !important;

    align-items: stretch;

    gap: 20px;

    width: 100%;
}

.science-library-page .interest-card {
    position: relative;

    display: flex;

    flex-direction: column;

    min-width: 0;

    width: 100%;
    height: 100%;

    padding: 25px;

    background: #ffffff;

    border:
        1px solid var(--science-border);

    border-radius: 18px;

    box-shadow:
        0 7px 20px rgba(32,75,55,.06);

    transition:
        transform .25s ease,
        box-shadow .25s ease;
}

.science-library-page .interest-card:hover {
    transform: translateY(-5px);

    box-shadow:
        0 15px 32px rgba(32,75,55,.12);
}

.science-library-page .interest-icon {
    width: 52px;
    height: 52px;

    display: flex;

    align-items: center;
    justify-content: center;

    margin-bottom: 18px;

    flex: 0 0 52px;

    border-radius: 14px;

    background:
        var(--science-green-light);

    font-size: 1.6rem;
}

.science-library-page .interest-card h3 {
    margin: 0 0 10px;

    color: var(--science-green-dark);

    font-family: "Nunito", sans-serif;

    font-size: 1.2rem;
}

.science-library-page .interest-card p {
    margin: 0 0 18px;

    color: var(--science-muted);

    line-height: 1.65;
}

.science-library-page .interest-card a {
    margin-top: auto;

    color: var(--science-blue-dark);

    font-weight: 800;

    text-decoration: none;
}

.science-library-page .interest-card a:hover {
    color: var(--science-green);
}


/* ==========================================================
   FAMILY / CHALLENGE CARD ACCENT
========================================================== */

.science-library-page
.study-section:not(.alternate)
.interest-card::before {
    content: "";

    position: absolute;

    top: 0;
    left: 0;

    width: 100%;
    height: 4px;

    border-radius:
        18px 18px 0 0;

    background:
        linear-gradient(
            90deg,
            var(--science-green),
            var(--science-blue),
            var(--science-yellow)
        );

    opacity: .75;
}


/* ==========================================================
   FINAL FEATURE
========================================================== */

.science-library-page .featured-study:last-of-type {
    padding-bottom: 100px;
}

.science-library-page
.featured-study:last-of-type
.featured-study-card {
    grid-template-columns: 1fr;

    max-width: 950px;

    margin-inline: auto;

    text-align: center;

    background:
        linear-gradient(
            135deg,
            #edf8f1,
            #eaf6fa,
            #fff8e7
        );
}

.science-library-page
.featured-study:last-of-type
.featured-text {
    padding: 25px 40px;
}

.science-library-page
.featured-study:last-of-type
.featured-highlights {
    max-width: 760px;

    margin-inline: auto;
}


/* ==========================================================
   FOOTER
========================================================== */

.science-library-page footer {
    background:
        linear-gradient(
            135deg,
            #173c2c,
            #16485a
        );

    color: #ffffff;
}

.science-library-page .footer-grid {
    display: grid;

    grid-template-columns:
        1.4fr
        1fr
        1fr
        1.2fr;

    gap: 45px;

    padding: 65px 0 50px;
}

.science-library-page .footer-brand {
    max-width: 340px;
}

.science-library-page .footer-site-name {
    display: inline-block;

    margin-bottom: 14px;

    color: #ffffff;

    font-family: "Nunito", sans-serif;

    font-size: 1.3rem;
    font-weight: 800;

    text-decoration: none;
}

.science-library-page .footer-brand p {
    margin: 0;

    color:
        rgba(255,255,255,.78);

    line-height: 1.7;
}

.science-library-page .footer-column {
    display: flex;

    flex-direction: column;

    gap: 9px;
}

.science-library-page .footer-column h4 {
    margin: 0 0 10px;

    color: #ffffff;

    font-size: 1rem;
}

.science-library-page .footer-column a {
    color:
        rgba(255,255,255,.75);

    text-decoration: none;
}

.science-library-page .footer-column a:hover {
    color: #ffffff;

    transform: translateX(3px);
}

.science-library-page .footer-bottom {
    display: flex;

    justify-content: space-between;

    gap: 20px;

    flex-wrap: wrap;

    width: min(1180px, 92%);

    margin-inline: auto;

    padding: 20px 0;

    border-top:
        1px solid rgba(255,255,255,.14);

    color:
        rgba(255,255,255,.65);

    font-size: .9rem;
}

.science-library-page .footer-bottom p {
    margin: 0;
}


/* ==========================================================
   TABLET
========================================================== */

@media (max-width: 950px) {

    .science-library-page .study-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr)) !important;
    }

    .science-library-page .interest-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr)) !important;
    }

    .science-library-page .featured-study-card {
        gap: 30px;
    }

    .science-library-page .footer-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }

}


/* ==========================================================
   MOBILE
========================================================== */

@media (max-width: 700px) {

    .science-library-page .nav-container {
        min-height: 82px;

        padding:
            10px 16px;
    }

    .science-library-page .mobile-menu {
        display: flex;
    }

    .science-library-page nav {
        display: none;

        position: absolute;

        top: 100%;
        left: 0;

        width: 100%;

        background: #ffffff;

        border-top:
            1px solid var(--science-border);

        border-bottom:
            1px solid var(--science-border);

        box-shadow:
            0 14px 30px rgba(0,0,0,.10);
    }

    .science-library-page nav.open {
        display: block;
    }

    .science-library-page nav ul {
        display: flex;

        flex-direction: column;
        align-items: stretch;

        gap: 4px;

        padding: 12px;
    }

    .science-library-page nav a {
        width: 100%;
    }

    .science-library-page .logo h1 {
        font-size: 1.35rem;
    }

    .science-library-page .logo span {
        font-size: .82rem;
    }

    .science-library-page .study-hero {
        padding:
            60px 0
            70px;
    }

    .science-library-page .study-hero h1 {
        font-size:
            clamp(2rem, 9vw, 3rem);
    }

    .science-library-page .study-hero > .container > p {
        font-size: 1rem;
    }

    .science-library-page .hero-buttons {
        flex-direction: column;

        width: 100%;
    }

    .science-library-page .hero-buttons .btn {
        width: 100%;
    }

    .science-library-page .featured-study,
    .science-library-page .study-section {
        padding:
            60px 0;
    }

    .science-library-page .featured-study-card {
        grid-template-columns: 1fr;

        gap: 25px;

        padding: 18px;
    }

    .science-library-page .featured-text {
        padding: 4px;
    }

    .science-library-page .featured-highlights {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }

    /* TWO CARDS PER ROW ON PHONES */

    .science-library-page .study-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr)) !important;

        gap: 16px;
    }

    .science-library-page .study-content {
        padding: 18px;
    }

    .science-library-page .study-content h3 {
        font-size: 1.1rem;
    }

    .science-library-page .study-content p {
        font-size: .92rem;
    }

    /* TWO INTEREST CARDS PER ROW */

    .science-library-page .interest-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr)) !important;

        gap: 16px;
    }

    .science-library-page .interest-card {
        padding: 18px;
    }

    .science-library-page .interest-card h3 {
        font-size: 1.05rem;
    }

    .science-library-page .interest-card p {
        font-size: .92rem;
    }

    .science-library-page .footer-grid {
        grid-template-columns: 1fr;

        gap: 30px;

        padding:
            50px 0
            40px;
    }

    .science-library-page .footer-bottom {
        flex-direction: column;

        text-align: center;
    }

}


/* ==========================================================
   VERY SMALL PHONES
========================================================== */

@media (max-width: 420px) {

    .science-library-page .study-grid,
    .science-library-page .interest-grid {
        grid-template-columns:
            1fr !important;
    }

    .science-library-page .featured-highlights {
        grid-template-columns:
            1fr;
    }

    .science-library-page .logo img {
        width: 48px;
        height: 48px;

        flex-basis: 48px;
    }

    .science-library-page .logo h1 {
        font-size: 1.15rem;
    }

    .science-library-page .logo span {
        font-size: .75rem;
    }

}


/* ==========================================================
   ACCESSIBILITY
========================================================== */

.science-library-page a:focus-visible,
.science-library-page button:focus-visible {
    outline:
        3px solid var(--science-yellow);

    outline-offset: 3px;
}


/* ==========================================================
   REDUCED MOTION
========================================================== */

@media (prefers-reduced-motion: reduce) {

    .science-library-page *,
    .science-library-page *::before,
    .science-library-page *::after {
        scroll-behavior: auto !important;

        transition: none !important;

        animation: none !important;
    }

}