* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    min-height: 100%;
    overflow-x: hidden;
}

body {
    min-height: 100vh;
    background-color: #050505;
    background-image: url("pozadi.jpg");
    background-size: 100% auto;
    background-position: top center;
    background-repeat: no-repeat;
    font-family: Arial, sans-serif;
    position: relative;
}

/* SOCIÁLNÍ TLAČÍTKA - CELÝ OBRÁZEK BEZ OŘEZU */
.social-btn {
    position: absolute;
    top: clamp(86px, 8.8vw, 150px);
    width: clamp(190px, 28vw, 430px);
    aspect-ratio: 4 / 1;
    display: block;
    z-index: 30;
    background: #000;
    border: none;
    box-shadow: none;
    border-radius: 0;
    overflow: visible;
    text-decoration: none;
    transition: transform 0.2s ease, filter 0.2s ease;
}

/* FB vlevo od loga */
.social-fb {
    right: calc(50% + clamp(135px, 16vw, 285px));
}

/* IG vpravo od loga */
.social-ig {
    left: calc(50% + clamp(135px, 16vw, 285px));
}

.social-btn:hover {
    transform: scale(1.03);
    filter: brightness(1.12);
}

.social-btn img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
    object-position: center center;
    border: none;
    box-shadow: none;
    border-radius: 0;
}

/* DLAŽDICE - POSUNUTÉ NÍŽ, ABY BYL VIDĚT NÁPIS POD LOGEM */
.grid-container {
    width: 94vw;
    max-width: 1160px;
    margin: 0 auto;
    padding-top: clamp(335px, 37vw, 590px);
    padding-bottom: 70px;
    position: relative;
    z-index: 5;
}

.grid {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(10px, 1.8vw, 24px);
}

.card {
    display: block;
    width: 100%;
    border-radius: clamp(10px, 1.4vw, 20px);
    overflow: hidden;
    text-decoration: none;
    background: transparent;
    transition: transform 0.22s ease, filter 0.22s ease;
}

.card:hover {
    transform: scale(1.035);
    filter: brightness(1.08);
}

.card img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: clamp(10px, 1.4vw, 20px);
}

/* TABLET */
@media (max-width: 900px) {
    .social-btn {
        top: clamp(68px, 9vw, 115px);
        width: clamp(145px, 29vw, 270px);
        aspect-ratio: 4 / 1;
    }

    .social-fb {
        right: calc(50% + clamp(92px, 16vw, 170px));
    }

    .social-ig {
        left: calc(50% + clamp(92px, 16vw, 170px));
    }

    .grid-container {
        width: 95vw;
        max-width: 860px;
        padding-top: clamp(275px, 38vw, 410px);
    }

    .grid {
        gap: 12px;
    }
}

/* MOBIL */
@media (max-width: 600px) {
    body {
        background-size: 100% auto;
        background-position: top center;
    }

    .social-btn {
        top: clamp(48px, 9vw, 72px);
        width: clamp(88px, 28vw, 150px);
        aspect-ratio: 4 / 1;
    }

    .social-fb {
        right: calc(50% + clamp(58px, 16vw, 95px));
    }

    .social-ig {
        left: calc(50% + clamp(58px, 16vw, 95px));
    }

    .grid-container {
        width: 96vw;
        padding-top: clamp(190px, 38vw, 275px);
        padding-bottom: 45px;
    }

    .grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 8px;
    }

    .card,
    .card img {
        border-radius: 9px;
    }
}

/* HODNĚ MALÝ MOBIL */
@media (max-width: 420px) {
    .social-btn {
        top: clamp(40px, 9vw, 56px);
        width: clamp(76px, 28vw, 112px);
        aspect-ratio: 4 / 1;
    }

    .social-fb {
        right: calc(50% + clamp(48px, 16vw, 66px));
    }

    .social-ig {
        left: calc(50% + clamp(48px, 16vw, 66px));
    }

    .grid-container {
        width: 96vw;
        padding-top: clamp(165px, 39vw, 220px);
    }

    .grid {
        gap: 7px;
    }
}