*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

html {
    scroll-behavior: smooth;
}

body{
    font-family:Arial, sans-serif;
}

/* =========================================================
   BASE = TELEFONO (mobile-first)
   ========================================================= */

/* header */

header{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: .25rem;
    position: sticky;
    top: 0;
    width: 100%;
    height: var(--header-h);
    background-color: var(--header-color);
    z-index: 1000;
    box-shadow: 0 1px 4px rgba(0,0,0,.15);
}

header a img{
    display: block;
    height: 2.75rem;
    width: auto;
}

header div{
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    padding: 0 .25rem;
}

header button{
    flex: 1;
    background-color: transparent;
    border: none;
    padding: .4rem .15rem;
    font-size: clamp(.72rem, 3.4vw, .95rem);
    line-height: 1.1;
    font-family: Hedvig, serif;
    cursor: pointer;
    transition: transform .2s;
}

@media (hover: hover) {
    header button:hover{
        transform: scale(1.1);
    }
}

/* main */

main{
    position: relative;
    width: 100%;
}

section{
    position: relative;
    width: 100%;
    overflow: hidden;
}

/* slideshow */

.slides{
    display: flex;
    width: 100%;
    min-height: calc(100vh - var(--header-h));
    min-height: calc(100svh - var(--header-h));
    transition: transform .6s ease-in-out;
}

.slides div{
    min-width: 100%;
    background-color: var(--orange-logo);
}

.anniversario,
.raccolta{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 2rem 1.25rem 4.75rem;
    text-align: center;
}

.anniversario{
    flex-direction: row;
    flex-wrap: wrap;
}

.anniversario h1,
.anniversario h3{
    width: 100%;
}

.anniversario h1{
    font-size: clamp(1.75rem, 9vw, 3rem);
    line-height: 1.15;
    font-family: BDOGrotesk, Arial, sans-serif;
}

.anniversario h3{
    font-size: clamp(1.25rem, 6vw, 2rem);
    font-family: Surfer, Arial, sans-serif;
}

.img18,
.palloncini{
    width: 38%;
    max-width: 180px;
    height: auto;
}

.raccolta h1{
    font-size: clamp(1.6rem, 8vw, 2.75rem);
    line-height: 1.15;
    font-family: Hedvig, serif;
}

.raccolta h3{
    text-align: left;
    font-size: clamp(.95rem, 4vw, 1.25rem);
    font-family: Outfit, Arial, sans-serif;
    font-weight: 300;
}

/* immagini decorative fuori dallo schermo (come nell'originale) */
.pane{
    position: absolute;
    top: 60vh;
    right: -100%;
    height: 25vh;
}

.scatola{
    position: absolute;
    top: 10vh;
    left: 105%;
}

/* frecce: sotto la slide, al centro */

.prev,
.next{
    position: absolute;
    bottom: .75rem;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: rgba(0,0,0,.5);
    color: white;
    font-size: 20px;
    cursor: pointer;
    transition: .3s;
}

.prev{
    left: calc(50% - 48px);
}

.next{
    right: calc(50% - 48px);
}

.prev:hover,
.next:hover{
    background: rgba(255,255,255,.8);
    color: black;
}

/* testi generali */

h2{
    font-family: Hedvig, serif;
    font-size: var(--header-size);
    line-height: 1.1;
}

h3{
    font-family: Outfit, Arial, sans-serif;
    font-size: var(--text-size);
    font-weight: var(--text-weight);
    text-align: left;
}

/* chi siamo */

.who{
    display: flex;
    flex-direction: column;
    padding: 2.5rem 1.25rem;
}

.who h3{
    padding: 1rem 0 0;
}

.who iframe{
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    margin-top: 1.5rem;
}

/* volontari */

.member{
    background-color: var(--red-logo);
    padding: 0 1.25rem 2.5rem;
}

.member h2,
.member h3{
    color: white;
}

.member h3{
    padding: 1rem 0 0;
}

.member img{
    display: block;
    width: calc(100% + 2.5rem);
    height: 16rem;
    margin: 0 -1.25rem 1.5rem;
    object-fit: cover;
}

/* famiglie solidali */

.family{
    padding: 2.5rem 1.25rem 2.5rem;
    background-color: var(--orange-logo);
}

.family h3{
    padding: 1rem 0 0;
}

.circle{
    position: relative;
    width: min(80vw, 20rem);
    aspect-ratio: 1;
    margin: 2rem auto 0;
    border-radius: 50%;
    overflow: hidden;
}

.circle img{
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* come aiutarci */

.help{
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2.5rem 1.25rem 1rem;
}

.help h3{
    font-size: 1rem;
    overflow-wrap: anywhere;
}

.help h4{
    font-size: var(--text-size);
}

.big{
    display: flex;
    flex-direction: column;
    width: 100%;
    margin-top: 1.5rem;
}

.small{
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    padding: 1.5rem 0;
    border-bottom: 1px solid rgba(0,0,0,.2);
    text-align: center;
}

.small:last-child{
    border-bottom: 0;
}

/* !important solo perché nell'HTML c'è un border-right inline;
   vale solo fuori dal layout desktop, dove il bordo serve */
@media not all and (min-width: 900px) and (min-height: 600px) {
    .small{
        border-right: 0 !important;
    }

    .pane,
    .scatola{
        display: none;
    }
}

.small img{
    width: 60%;
    max-width: 15rem;
    height: auto;
}

.small h4{
    padding: 1rem 0 0;
}

.small h3{
    padding: .75rem 0 0;
    text-align: center;
}

/* footer */

footer{
    width: 100%;
    height: 6rem;
    background-color: black;
}


/* =========================================================
   DESKTOP (>= 900px di larghezza e >= 600px di altezza)
   Ripristina il layout originale basato su vh/vw
   ========================================================= */

@media (min-width: 900px) and (min-height: 600px) {

    
    html{
        scroll-snap-type: y;
    }

    /* header */

    header{
        flex-direction: row;
        gap: 0;
        box-shadow: none;
    }

    header a img{
        position: absolute;
        top: 1.5vh;
        left: 1vw;
        width: 12vh;
        height: auto;
    }

    header div{
        height: 100%;
        width: 60vw;
        justify-content: space-between;
        padding: 0;
    }

    header button{
        flex: none;
        width: 15vw;
        padding: 0;
        font-size: clamp(1rem, 1.9vw, 1.75rem);
        line-height: normal;
    }

    section{
        min-height: 85vh;
        scroll-snap-align: end;
    }

    h2{
        line-height: normal;
    }

    h3{
        text-align: justify;
    }

    /* slideshow */

    .anniversario,
    .raccolta{
        display: block;
        padding: 0;
        text-align: initial;
    }

    .anniversario h1{
        font-size: min(13vh, 6vw);
        text-align: center;
        padding: 17vh 0 0 0;
    }

    .anniversario h3{
        font-size: min(6vh, 3.2vw);
        text-align: center;
        padding: 10vh 0 0 0;
    }

    .img18,
    .palloncini{
        position: absolute;
        max-width: none;
        height: auto;
    }

    .img18{
        top: 16vh;
        left: 5vw;
        width: 20vw;
    }

    .palloncini{
        right: 5vw;
        top: 15vh;
        width: 18vw;
    }

    .raccolta h1{
        font-size: min(12vh, 6vw);
        text-align: center;
        padding: 8vh 0 0 0;
    }

    .raccolta h3{
        text-align: justify;
        font-size: min(5vh, 2.3vw);
        padding: 8vh 15vw 0 15vw;
    }

    .prev,
    .next{
        top: 50%;
        bottom: auto;
        transform: translateY(-50%);
        width: 45px;
        height: 45px;
        font-size: 24px;
    }

    .prev{
        left: 15px;
    }

    .next{
        right: 15px;
        left: auto;
    }

    /* chi siamo */

    .who{
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        padding: 0 10vw;
    }

    .who div{
        width: 50vw;
        padding: 0 0 10vh 0;
    }

    .who h3{
        padding: 7vh 15vw 0 0;
    }

    .who iframe{
        width: 30vw;
        margin-top: 0;
    }

    /* volontari */

    .member{
        padding: 10vh 0 0 50vw;
    }

    .member h3{
        padding: 7vh 15vw 0 0;
    }

    .member img{
        position: absolute;
        width: auto;
        height: 85vh;
        margin: 0;
        top: 0;
        left: -10vw;
        object-fit: fill;
    }

    /* famiglie solidali: il cerchio scala con --d */

    .family{
        --d: min(140vh, 75vw);
        padding: 15vh 0 0 10vw;
    }

    .family h2{
        font-size: min(14vh, 7vw);
    }

    .family h3{
        padding: 7vh 50vw 0 0;
    }

    .circle{
        position: absolute;
        width: var(--d);
        height: var(--d);
        aspect-ratio: auto;
        margin: 0;
        top: 50%;
        right: calc(var(--d) * -0.393);
        transform: translateY(-50%);
    }

    .circle img{
        position: relative;
        width: auto;
        height: calc(var(--d) * 0.607);
        top: calc(var(--d) * 0.196);
        right: calc(var(--d) * 0.214);
        object-fit: fill;
    }

    /* come aiutarci */

    .help{
        padding: 0;
    }

    .help h2{
        font-size: min(12vh, 6vw);
    }

    .help h3{
        font-size: clamp(.9rem, 1.4vw, 1.7rem);
    }

    .big{
        flex-direction: row;
        align-items: stretch;
        min-height: 73vh;
        margin-top: 0;
    }

    .small{
        width: 33%;
        padding: 2vh 0 0;
        border-bottom: 0;
        text-align: initial;
    }

    .small img{
        width: 65%;
        max-width: none;
    }

    .small h4{
        padding: 3vh 0 0 0;
    }

    .small h3{
        text-align: justify;
        padding: 3vh 5vw 0 5vw;
    }

    /* footer */

    footer{
        height: 30vh;
        scroll-snap-align: end;
    }
}