:root {

--color-logo-blue: #2F70D3;
--color-logo-yellow: #facc15;

--color-bg-light: #fff7eb;
--color-bg-white: #ffffff;
--color-bg-dark: #1B1917;
--color-bg-card-yellow: #E6D6B5;

--color-text: #1f2933;
--color-text-hero: #2858B8;
--color-text-light: #f3f4f6;
--color-text-muted: #4b5563;

--color-accent: #f97316;
--color-border: #e5e7eb;
--color-shadow: rgba(15, 23, 42, 0.15);

--bp-sm: 600px;
--bp-md: 768px;
--bp-lg: 1024px;

--font-heading: "Nunito", sans-serif;
--font-body: "Montserrat", sans-serif;

--fs-xxl: 2rem;
--fs-xl: 1.5rem;
--fs-lg: 1.25rem;
--fs-md: 1rem;
--fs-sm: 0.875rem;

--lh-tight: 1.1;
--lh-normal: 1.45;
--lh-relaxed: 1.6;

--space-xs: 0.25rem;
--space-sm: 0.5rem;
--space-md: 1rem;
--space-lg: 1.5rem;
--space-xl: 2rem;

--radius-sm: 0.5rem;
--radius-md: 1rem;
--radius-lg: 1.5rem;
--radius-btn: 0.9375rem;

--shadow-soft: 0 14px 30px var(--color-shadow);
--shadow-card: 0 12px 24px rgba(0, 0, 0, 0.12);
}

.skip-link:focus,
.skip-link:focus-visible {
    top: 0;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    background: var(--color-bg-light);
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--color-text);
}
h1, h2, h3, h4, h5 {
    font-family: var(--font-heading);
    font-weight: 700;
}

img {
    max-width: 100%;
    display: block;
}

button {
    font-family: inherit;
}

.section {
    padding-block: var(--space-lg);
}

.section .container {
    padding-inline: var(--space-md);
}

.container {
    max-width: 1120px;
    margin-inline: auto;
}

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background-color: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
}

.header-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-inline: var(--space-md);
    padding-block: var(--space-md);
    position: relative;
}

.section.hero {
    margin: 0;
    padding: 0;
}

.section.involved-hero {
    margin: 0;
    padding: 0;
}

.hero {
    padding: 0;
    position: relative;
}

.hero__image {
    width: 100%;
    height: auto;
    display: block;
}

.hero-card {
    background-color: var(--color-bg-card-yellow);
    max-width: 600px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    text-align: center;
    position: relative;
    z-index: 1;
    transform: translateY(-4rem);
}

.hero-card__title {
    font-size: var(--fs-xl);
    line-height: 1.25;
    margin-bottom: 0.25rem;
    color: var(--color-logo-blue);
    font-weight: 800;
}

.hero-card__text {
    font-size: var(--fs-xl);
    line-height: 1.25;
    color: var(--color-text-hero);
    margin-bottom: var(--space-lg);
    font-weight: 600;
}


.hero-floating-btn {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: -30px;
    height: 3.2rem;
    min-width: 11.5rem;
    padding: 0 3rem;
    font-size: 1.062rem;
    font-weight: 600;
    border-radius: 0.5rem;
    background-color: var(--color-logo-blue);
    color: var(--color-bg-white);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;

    box-shadow: 0 12px 22px rgba(0, 0, 0, 0.18);
    z-index: 5;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.hero-floating-btn:hover,
.hero-floating-btn:focus-visible {
    transform: translateX(-50%) translateY(-2px);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.25);
}

.hero-card__buttons {
    display: flex;
    justify-content: center;
    margin-top: -1.5rem;
    position: relative;
    z-index: 2;
}

.hero-card__buttons .btn--primary {
    display: inline-block;
    border-radius: 12px;
    padding: 0.9rem 2rem;
    font-size: var(--fs-md);
    background-color: var(--color-logo-blue);
    color: var(--color-bg-white);
}

.visit-hero {
    margin: 0;
    padding: 0;
    position: relative;
}

.visit-hero__image {
    width: 100%;
    height: auto;
    display: block;
}

.visit-hero__overlay {
    position: absolute;
    left: 50%;
    bottom: calc(var(--space-xl) * 1.8);
    transform: translateX(-50%);
    background: transparent;
    padding: 0;
    max-width: 90%;
    text-align: center;
}

.visit-hero__title {
    margin: 0;
    font-size: var(--fs-lg);
    color: var(--color-bg-white);
    font-weight: 700;
    text-align: center;
    line-height: 1.3;
    text-shadow: 0 3px 12px rgba(0, 0, 0, 0.85);
}

.visit-details__grid {
    display: grid;
    gap: var(--space-xl);
    max-width: 900px;
    margin-inline: auto;
}

.visit-details__item-title {
    text-align: center;
}

.visit-details__item p {
    text-align: center;
}

.visit-cta {
    background-color: var(--color-bg-light);
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
    margin-top: 4rem;
}

.visit-cta__box {
    background-color: #F7F9FC;
    border-radius: var(--radius-lg);
    border: 1px solid #111111;
    padding: var(--space-xl);
    text-align: center;
    box-shadow: 0px 4px 20px rgba(0, 0, 0, 0.12);
    max-width: 620px;
    margin-inline: auto;
}

.visit-cta__title {
    margin-bottom: 1.2rem;
    font-size: var(--fs-md);
    font-weight: 700;
}


.section-audience {
    background-color: var(--color-bg-light);
    margin-top: -8rem;
    padding-top: 4rem;
    padding-bottom: var(--space-xl);
}

.audience-card {
    background-color: var(--color-logo-blue);
    padding: 3px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
}

.audience-card img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: calc(var(--radius-lg) - 3px);
    box-shadow: none;
}

.audience-grid {
    align-items: stretch;
}

.audience-card {
    display: block;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.audience-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 0 22px rgba(47, 112, 211, 0.45);
}

.audience-card img {
    transition: transform 0.35s ease, filter 0.35s ease;
}

.audience-card:hover img {
    transform: scale(1.02);
    filter: brightness(1.06);
}

.section-line {
    padding-block: var(--space-md);
    padding-inline: 0;
    background-color: var(--color-bg-card-yellow);
}

.section--dark {
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
}

.section-events {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

.section-title--light {
    color: var(--color-text-light);
    text-align: center;
    margin: 0 0 var(--space-xl);
}

.events-grid {
    align-items: stretch;
}

.card {
    border-radius: var(--radius-md);
    overflow: hidden;
}

.card--dark {
    background-color: #262320;
    box-shadow: none;
}

.card__image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.card__body {
    padding: var(--space-md);
}

.card__title {
    font-size: var(--fs-md);
    margin: 0 0 var(--space-sm);
    color: var(--color-text-light);
    text-align: center;
}

.card__text--light {
    font-size: var(--fs-sm);
    line-height: var(--lh-relaxed);
    color: var(--color-text-light);
    margin: 0;
}

.section-exhibitions-cta {
    padding: 0;
    background-color: var(--color-bg-dark);
}

.section--flush-footer {
    padding-bottom: 0;
}

.exhibitions-cta__image-wrapper {
    position: relative;
}

.exhibitions-cta__image {
    width: 100%;
    display: block;
}

.exhibitions-cta__card {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 2.5rem 3rem;
    box-shadow: var(--shadow-soft);
    max-width: 550px;
    margin: var(--space-xl) auto 0;
    text-align: center;
    text-decoration: none;
    color: var(--color-text);
    display: block;
}

.exhibitions-cta__title {
    font-size: var(--fs-lg);
    margin: 0;
    font-weight: 700;
}

.section-exhibitions-cta .btn {
    margin-top: var(--space-sm);
}

.exhibitions-hero {
    position: relative;
}

.exhibitions-hero__image {
    width: 100%;
    height: auto;
    display: block;
}

.exhibitions-hero__title {
    margin: 0 0 var(--space-xs);
    font-size: var(--fs-lg);
}

.exhibitions-hero__text {
    position: absolute;
    bottom: calc(var(--space-xl) * 1.8);
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-bg-white);
    font-family: var(--font-body);
    font-size: var(--fs-lg);
    font-weight: 400;
    text-align: center;
    max-width: 90%;
    padding: 0 var(--space-md);
    text-shadow: 0 3px 12px rgba(0, 0, 0, 0.8);
}

.exhibitions-list {
    background-color: var(--color-bg-light);
}

.exhibitions-grid {
    align-items: flex-start;
    gap: 5rem;
}

.exhibitions-card {
    margin-bottom: var(--space-xl);
}

.exhibitions-card__title {
    font-size: var(--fs-lg);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-lg);
}

.exhibitions-card__image {
    width: 100%;
    display: block;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-sm);
}

.exhibitions-card__text {
    font-size: var(--fs-sm);
    line-height: var(--lh-relaxed);
    font-weight: 400;
    text-align: center;
    max-width: 480px;
    margin: 0 auto var(--space-md);
}

.exhibitions-card__text p {
    margin-bottom: var(--space-md);
}

.exhibitions-card .card__title {
    color: var(--color-text);
    font-size: var(--fs-md);
}

.exhibitions-visit-cta {
    background-color: var(--color-bg-light);
}

.exhibitions-visit-cta__title {
    margin: 0 0 var(--space-sm);
    font-size: var(--fs-lg);
}

.exhibitions-visit-cta__text {
    margin:  0 0 var(--space-md);
    font-size: var(--fs-sm);
    color: var(--color-text-muted);
}

.exhibitions-visit-cta__box {
    background-color: #F7F9FC;
    border-radius: var(--radius-lg);
    border: 1px solid #111111;
    padding: var(--space-lg);
    text-align: center;
    box-shadow: 0px 4px 20px rgba(0, 0, 0, 0.18);
    max-width: 620px;
    margin-inline: auto;
}

.exhibitions-visit-cta__box .btn--primary {
    padding: 0.9rem 2.2rem;
    border-radius: 0.75rem;
    font-size: var(--fs-md);
}

.exhibitions-cta__card:hover {
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.20);
    transform: translate(-50%, -52%);
    transition: 0.25s ease;
}

.hero--involved {
    padding-inline: 0;
    padding-top: 0;
    margin-bottom: 6rem;
}

.hero-card--involved {
    background-color: var(--color-bg-light);
    max-width: 560px;
    padding: calc(var(--space-lg) * 1.5) var(--space-xl) calc(var(--space-lg) * 1.6);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    text-align: center;
    transform: translateY(calc(var(--space-xl) * -2.5));
}

.involved-hero .hero-floating-btn {
    bottom: 3rem;
    border-radius: var(--radius-btn);
    font-weight: 700;
}

.hero-card--involved .hero-card__title {
    margin: 0 0 1rem;
    font-size: var(--fs-xl);
    line-height: var(--lh-tight);
    color: var(--color-text);
}

.hero-card__text--involved {
    margin: 0;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 1.25rem;
    line-height: 1.45;
    color: var(--color-text);
}

.hero-floating-btn--involved {
    bottom: -1.9rem;
    min-width: 11.5rem;
    padding: 0.9rem 3rem;
    border-radius: 999px;
    font-size: 1.0625rem;
    font-weight: 700;
}

.involved-options {
    background-color: var(--color-bg-light);
    margin-top: 4rem;
}

.involved-options__grid {
    align-items: flex-start;
    row-gap: var(--space-xl);
}

.involved-card {
background-color: transparent;
border-radius: 0;
padding: 0;
box-shadow: none;
}

.involved-card__title {
    margin: 0 0 var(--space-sm);
    font-size: var(--fs-md);
}

.involved-card__text {
    margin: 0;
    font-size: var(--fs-sm);
    line-height: var(--lh-relaxed);
    color: var(--color-text-muted);
}

.btn {
    display: inline-flex;
    justify-content: center;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: var(--fs-md);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
}

.btn--primary {
    background-color: var(--color-logo-blue);
    color: var(--color-bg-white);
}

.btn--secondary {
    background-color: var(--color-bg-white);
    color: var(--color-logo-blue);
    border: 2px solid var(--color-logo-blue);
}



.logo img {
    height: 40px;
}

.nav-toggle-checkbox {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

.nav-toggle {
    border: none;
    background: none;
    padding: 0;
    font-size: var(--fs-xl);
    color: var(--color-text);
    cursor: pointer;
}

.nav-toggle::before {
    content: "☰";
}

.nav-toggle-checkbox:checked + .nav-toggle::before {
    content: "X";
}

.main-nav {
    display:none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md);
    z-index: 10;
}

.main-nav__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin: 0;
    padding: 0;
}

.nav-toggle-checkbox:checked ~ .main-nav {
    display: block;
}


.main-nav__link {
    text-decoration: none;
    font-size: var(--fs-sm);
    color: var(--color-text);
}

.main-nav__link--active {
    border-bottom: 2px solid var(--color-logo-blue);
    padding-bottom: 0.1rem;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-logo-blue);
    color: var(--color-bg-white);
    padding: var(--space-sm) var(--space-md);
    z-index: 1000;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    transition: top 0.2s ease;
}

.site-footer {
    background-color: var(--color-bg-light);
    margin-top: var(--space-lg);
    padding-block: var(--space-xl);
    border-top: 1px solid var(--color-border);
    font-size: var(--fs-sm);
    color: var(--color-text);
}

.site-footer .footer-top,
.site-footer .footer-bottom,
.site-footer .footer-copy {
    max-width: 1120px;
    margin-inline: auto;
    padding-inline: var(--space-md);
}

.footer-top {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer-logo img {
    height: 40px;
    width: auto;
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer-column {
    max-width: 260px;
}

.footer-title {
    margin: 0 0 var(--space-xs);
    font-size: var(--fs-sm);
    font-weight: 700;
}

.footer-copy {
    text-align: center;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin: 0;
}

.footer-logo {
    margin-bottom: var(--space-lg);
}

@media (max-width: 767px) {
    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
        border-radius: 0.75rem;
    }

    .footer-logo {
        margin-bottom: var(--space-lg);
    }

    .site-footer {
        margin-top: var(--space-md);
    }

    .exhibitions-hero__text {
        width: 100%;
        font-size: var(--fs-md);
        line-height: var(--lh-relaxed);
        padding-inline: var(--space-lg);
    }

    .exhibitions-grid {
        gap: var(--space-lg);
    }

    .exhibitions-card {
        margin-bottom: var(--space-md);
    }

    .exhibitions-card__text {
        margin-bottom: var(--space-sm);
    }
}



@media (min-width: 768px) {
    .footer-logo {
        margin-bottom: 0;
        flex-shrink: 0;
    }

    .site-footer--flush {
        margin-top: 0;
    }

    .section {
        padding-block: var(--space-xl);
    }

    .hero-card {
        padding: var(--space-lg) var(--space-xl);
        max-width: 640px;
        position: relative;
        z-index: 2;
        transform: translateY(-10rem);
    }

    .hero-card__buttons {
        display: flex;
        justify-content: center;
        margin-top: -1.5rem;
    }

    .hero-card__title {
        font-size: var(--fs-xxl);
    }

    .hero-card__text {
        font-size: var(--fs-md);
        max-width: 36rem;
        margin: 0 auto var(--space-md);
    }

    .exhibitions-cta__card {
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        max-width: 420px;
        margin: 0;
    }

    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
    }

    .footer-top {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
    }

    .visit-details__grid {
        grid-template-columns: repeat(2, minmax(0 , 1fr));
        column-gap: 4rem;
        row-gap: 3rem;
    }

    .visit-hero__title {
        font-size: var(--fs-xl);
    }

    .hero.hero--involved,
    .hero.involved-hero {
        margin-bottom: calc(var(--space-xl) * 3);
    }
    .hero-card--involved {
        max-width: 560px;
        padding: calc(var(--space-lg) * 1.5) var(--space-xl) calc(var(--space-lg) * 1.6);
        background-color: var(--color-bg-light);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-soft);
        text-align: center;
        transform: translateY(calc(var(--space-xl) * -2.5));
    }

    .nav-toggle {
        display: none;
    }

    .nav-toggle-checkbox {
        display: none;
    }

    .main-nav {
        display: block;
        position: static;
        border-bottom: none;
        padding: 0;
    }

    .main-nav__list {
        flex-direction: row;
        gap: var(--space-md);
    }

    .header-bar {
        padding-inline: var(--space-xl);
    }

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

    .grid--3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }


}

@media (min-width: 1024px) {
    .header-bar {
        max-width: 1120px;
        margin-inline: auto;
    }

    .hero-card__title,
    .exhibitions-hero__title,
    .involved-hero__title {
        font-size: var(--fs-xl);
    }
}