@font-face {
    font-family: NotoMusic;
    font-weight: 400;
    src: url('fonts/NotoMusic-Regular.ttf') format('truetype');
}

:root {
    --c-blue: #003b5c;
    --c-blue-dark: #002e47;
    --c-green: #ddf0e7;
}

* {
    box-sizing: border-box;
}

.desktop {
    @media (width <60rem) {
        display: none;
    }

}

.mobile {
    @media (width >=60rem) {
        display: none;
    }
}

h2,
h3 {
    margin: 0;
    font-weight: normal;
}

p {
    margin: 1rem 0 0 0;
}

dt,
dd {
    margin: 0;
    display: inline-block
}

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

body {
    margin-block: 0;
    margin-inline: auto;
    font-size: 1rem;
    font-family: Fira Sans, sans-serif;

    @media(width >=48rem) {
        font-size: 1.125rem;
        line-height: 1.75rem;
    }
}

header {
    position: relative;
}

nav {
    padding-inline: 2rem;
    padding-block: 1rem;
    background-color: var(--c-blue);
    color: var(--c-green);
}

.header__content {
    margin-inline: auto;
    max-width: 80rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

.desktop-menu {
    list-style: none;
    display: none;
    padding: 0;
    margin: 0 0 0 1.5rem;

    @media (width >=64rem) {
        display: flex;
        justify-content: flex-start;
        gap: 2rem;
    }

}

.menu-item__link {
    color: var(--c-green);
    text-decoration: none;

    &:visited {
        color: var(--c-green);
    }
}

.menu-item__underline {
    height: .125rem;
    background-color: var(--c-green);
    transform: scaleX(0%);
    transition-duration: 0.15s;
    transition-property: transform;
    transition-timing-function: cubic-bezier(.4, 0, .2, 1);
}

.menu-item:hover {
    .menu-item__underline {
        transform: scaleX(100%);
    }
}

.mobile-menu {
    display: none;
    margin: 0;
    padding-inline: 0;
    padding-top: 0.5rem;
    padding-bottom: 0.75rem;
    list-style: none;

    li:not(:last-child) {
        margin-bottom: 0.25rem;
    }
}

.mobile-menu--open {
    display: block;
}

.mobile-menu__item__link {
    color: var(--c-green);
    display: block;
    padding-left: 0.75rem;
    padding-right: 1rem;
    padding-block: 0.5rem;
    text-decoration: none;

    &:active,
    &:visited,
    &:focus {
        color: var(--c-green);
        text-decoration: none;
    }
}

#mobile-menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    background-color: transparent;
    border: none;
    color: inherit;
}

.mobile-menu__icon {
    height: 1.5rem;
    width: 1.5rem;
}

.mobile-menu__icon--open {
    display: block;
}

.mobile-menu__icon--closed {
    display: none;
}

#mobile-menu-toggle[aria-expanded='true'] {
    .mobile-menu__icon--open {
        display: none;
    }

    .mobile-menu__icon--closed {
        display: block;
    }
}

@media (width >=64rem) {
    #mobile-menu-toggle {
        display: none;
    }
}

.logo {
    height: 3rem;
}

.logo-link {
    display: block;
    color: var(--c-green);
    font-size: 0;
    line-height: 1;

    &:visited,
    &:active,
    &:focus {
        color: var(--c-green);
    }
}

.progressive-image {
    display: grid;
}

.progressive-image img {
    grid-row: 1;
    grid-column: 1;
    width: 100%;
    height: 100%;
}

.progressive-image img.low-res {
    opacity: 1;
}

.progressive-image img.high-res {
    opacity: 0;
}

.progressive-image img.high-res.loaded {
    opacity: 1;
}

.progressive-image img.high-res.loaded+img.low-res {
    opacity: 0;
}

.hero {
    display: none;
    flex-direction: column;
    object-fit: cover;
    object-position: center;
    width: 100%;
    max-height: calc(100vh - 80px);

    @media (width >=60rem) {
        display: flex;
    }
}

.section {
    padding-inline: 2rem;
    padding-block: 4rem;
    color: var(--c-blue);

    &.section--green {
        background-color: var(--c-green);
    }

    @media (width >=40rem) {
        padding-block: 8rem;
    }
}

.section__inner {
    display: grid;
    grid-template-columns: 1fr;
    max-width: 80rem;
    margin-inline: auto;
    column-gap: 5rem;
    row-gap: 1rem;
}

.section__inner--two-cols {
    @media (width >=60rem) {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.section--reverse {
    @media (width >=60rem) {
        .section__inner--two-cols>:first-child {
            order: 2;
        }
    }
}

.section__title {
    font-family: Merriweather, sans-serif;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.section__image {
    width: 100%;
    margin-inline: auto;
}

#auftritte .section__image {
    object-fit: cover;
    object-position: top;
    aspect-ratio: 8/7;

    @media (width <=60rem) {
        aspect-ratio: 3/2;
    }
}

#auftritte .call-to-action {
    display: block;
    margin-top: 1rem;
    width: fit-content;
}

.events__title {
    font-family: Merriweather, sans-serif;
    font-size: 1.875rem;
    line-height: 2.25rem;
    margin-top: 0;
    margin-bottom: 1rem;
}

.events__pretitle {
    font-family: Merriweather, sans-serif;
    font-size: 1rem;
    text-transform: uppercase;
}

.events__items {
    list-style: none;
    padding: 0;
    margin: 0;
}

.event {
    margin-top: 1rem;
}

.event__date,
.event__location {
    img {
        width: 1rem;
        height: 1rem;
    }
}

.event__location {
    margin-top: 0.5rem;
}

.parallax {
    display: flex;
    flex-direction: column;
    background-size: cover;
    background-position: center;
    background-color: var(--c-blue);
    background-blend-mode: luminosity;
    filter: brightness(.75);
    height: 15rem;

    @media (width >=40rem) {
        height: 24rem;
    }

    @media (width >=48rem) {
        background-attachment: fixed;
    }
}

.patronage-options {
    list-style-type: none;
    padding: 0;
    margin-top: 0;
    margin-inline: 0;
    margin-block: 2rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;

    @media (width >=48rem) {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    @media (width >=60rem) {
        grid-template-columns: repeat(4, minmax(0, 1fr))
    }
}

.patronage-option {
    background-color: white;
    border: 2px solid var(--c-blue);
    height: 100%;
}

.patronage-option__icon {
    font-family: NotoMusic;
    text-align: center;
    font-size: 3rem;
    line-height: 1;
    padding-block: 0.5rem;
}

.patronage-option__title {
    font-weight: bold;
    text-align: center;
    background-color: var(--c-blue);
    color: white;
    padding-block: 0.5rem;
}

.patronage-option__price {
    padding: 1rem;
    text-align: center;
    border-bottom: 1px solid #9ca3af;
}

.patronage-option__benefits {
    display: grid;
    row-gap: 1rem;
    padding-block: 1rem;
    padding-inline: 0;
    list-style: none;
}

.patronage-option__benefit {
    padding-inline: 1rem;
}

#newsletter {
    text-align: center;

    .section__inner {
        row-gap: 0;
    }

    form {
        margin-inline: auto;
        margin-top: 1rem;
        max-width: 24rem;
    }

    p {
        margin: 0;
    }

    input[type=email] {
        color: var(--c-blue);
        width: 100%;
        padding: 0.5rem;
        border: 1px solid #d1d5db;
        box-shadow: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
        font-size: inherit;

        &:focus-visible {
            outline: 1px solid var(--c-blue);
        }
    }
}

#newsletter button,
a.call-to-action {
    cursor: pointer;
    padding: 1rem;
    color: white;
    background-color: var(--c-blue);
    font-weight: 600;
    font-size: inherit;
    letter-spacing: .05em;
    transition-property: transform;
    transition-timing-function: cubic-bezier(.4, 0, .2, 1);
    transition-duration: .15s;
    margin-top: 1rem;
    width: 100%;
    border: none;
    text-decoration: none;

    &:hover {
        background-color: var(--c-blue-dark);
    }

    &:active {
        transform: scale(0.9);
    }

    &:focus {
        outline: none;
    }

    &:focus-visible {
        box-shadow: white 0px 0px 0px 2px, var(--c-blue) 0px 0px 0px 4px, black 0px 0px 0px 0px
    }
}

#success-message:not(:empty) {
    margin-top: 1rem;
    max-width: 24rem;
    margin-inline: auto;
    padding: 1rem;
    color: var(--c-blue);
}

#error-message:not(:empty) {
    margin-top: 1rem;
    max-width: 24rem;
    margin-inline: auto;
    padding: 1rem;
    color: var(--c-blue);
    background-color: #fecaca;
    border-radius: 0.25rem;
}

.sponsors {
    background-color: white;
    padding-inline: 2rem;
    padding-block: 4rem;

    @media (width >=40rem) {
        padding-block: 8rem;
    }
}

.sponsors__heading {
    color: var(--c-blue);
    font-size: 1.5rem;
    font-family: Merriweather, sans-serif;
    line-height: 2rem;
    text-align: center;
    margin: 0;
}

.sponsors__list {
    display: grid;
    grid-template-columns: repeat(auto-fit, 15rem);
    justify-content: center;
    align-items: center;
    column-gap: 6rem;
    row-gap: 4rem;
    list-style: none;
    padding: 0;
    margin-inline: 0;
    margin-top: 2rem;
    margin-bottom: 0;
    font-size: 0;
    line-height: 1;

    li img {
        width: 15rem;
    }
}

#to-top-button {
    position: fixed;
    z-index: 20;
    bottom: 1rem;
    right: 1rem;
    background: none;
    border: none;
    cursor: pointer
}

.to-top-button__inner {
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    background-color: black;
    border-radius: 50%;
    width: 2.5rem;
    height: 2.5rem;

    &:hover {
        background-color: hsl(221, 39%, 10%);
    }
}

#to-top-button svg {
    width: 1.5rem;
    height: 1.5rem;
}

footer {
    padding-block: 5rem;
    background-color: var(--c-blue);
    color: var(--c-green);
}

.footer__list {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4rem;
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 0;
    line-height: 1;

    a {
        color: var(--c-green);

        &:hover {
            color: white;
        }
    }

    svg {
        width: 1.875rem;
        height: 1.875rem;
    }
}