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

html,
body {
    width: 100%;
    min-height: 100%;
}

body {
    background: #000;
    overflow-x: hidden;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.container {
    position: relative;
    width: 100%;
    min-height: 100vh;

    display: flex;
    flex-direction: column;
}

.bg-video {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    object-fit: cover;
    background: #000;
    pointer-events: none;
    z-index: -1;
}

.overlay {
    position: relative;

    display: flex;
    justify-content: center;
    align-items: flex-start;

    padding: 140px 20px 40px;
    background: linear-gradient(rgba(0, 0, 0, 0.75),
            rgba(0, 0, 0, 0.9));
    z-index: 1;
    flex: 1;
}

.grid-links {
    width: 100%;
    max-width: 1200px;

    margin: 0 auto;
    margin-top: 40px;

    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 28px;

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

.grid-item {
    perspective: 1000px;
    min-height: 220px;
    text-decoration: none;
}

.card {
    width: 100%;
    height: 100%;
    border-radius: 22px;
    overflow: hidden;
}

.card-inner {
    width: 100%;
    height: 100%;
    position: relative;

    transform-style: preserve-3d;
    transition: transform 0.7s ease;
}

@media (hover: hover) {
    .grid-item:hover .card-inner {
        transform: rotateY(180deg);
    }
}

.grid-item:focus-visible .card-inner {
    transform: rotateY(180deg);
}

.card-front,
.card-back {
    position: absolute;
    inset: 0;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

    gap: 16px;
    padding: 28px;
    text-align: center;

    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.08);

    box-shadow:
        0 12px 35px rgba(0, 0, 0, 0.55),
        inset 0 0 0 1px rgba(255, 255, 255, 0.05);

    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);

    border-radius: 22px;

    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.card-back {
    transform: rotateY(180deg);
}

.card-front img {
    width: 55%;              
    max-width: 140px;        
    max-height: 70%;        
    height: auto;
    object-fit: contain;
}

.card-back img {
    

    width: 45%;
    max-width: 120px;
    max-height: 30%;
    object-fit: contain;
}

.card-back p {
    color: #d7dadf;
    font-size: 14px;
    line-height: 1.3;
    max-width: 90%;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

.card-back h1 {
    color: #ffffff;
    font-size: 20px;
    line-height: 1.2;
    max-width: 90%;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;

    width: 100%;
    height: 120px;

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

    background: transparent;
    z-index: 10;
}

.header-inner {
    width: 100%;
    max-width: 1200px;
    padding: 0 20px;

    display: flex;
    justify-content: center;
}

.logo-text {
    color: #ffffff;
    font-size: 30px;
    
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    letter-spacing: 4px;
}

@media (max-width: 1024px) {

    .grid-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
        margin-top: 24px;
    }

    .grid-item {
        min-height: 210px;
    }
}

@media (max-width: 640px) {

    body {
        overflow-y: auto;
    }

    .overlay {
        padding-top: 110px;
    }

    .grid-links {
        grid-template-columns: 1fr;
        gap: 24px;
        margin-top: 20px;
    }

    .grid-item {
        min-height: 200px;
    }

    .card-front img {
        width: 60%;
        max-width: 110px;
    }

    .card-back img {
        width: 64px;
        max-height: 28%;
    }

    .card-back h1 {
        font-size: 16px;
    }

    .card-back p {
        font-size: 12px;
    }

    .site-header {
        height: 84px;
    }

    .logo-text {
        font-size: 22px;
        letter-spacing: 3px;
    }
}

.site-footer {
    width: 100%;
    height: 90px;

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

    background: linear-gradient(rgba(0, 0, 0, 0.85),
            rgba(0, 0, 0, 0.95));

    z-index: 2;
}

.site-footer::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none; 
}

.footer-inner {
    width: 100%;
    max-width: 1200px;
    padding: 0 20px;

    display: flex;
    justify-content: center;
}

.footer-text {
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    letter-spacing: 2px;
    font-weight: 500;

    color: #cfd2d6; 
    text-align: center;

    opacity: 0.85;
}

.card-cta {
    margin-top: 16px;

    font-size: 10px;
    font-weight: 500;
    letter-spacing: 1.2px;
    text-transform: uppercase;

    color: rgba(220, 235, 255, 0.9);

    opacity: 0;
    transform: translateY(6px);

    transition:
        opacity 0.3s ease,
        transform 0.3s ease,
        color 0.3s ease,
        text-shadow 0.3s ease;

    pointer-events: none;
}

.grid-item:hover .card-cta,
.grid-item:focus-visible .card-cta {
    opacity: 1;
    transform: translateY(0);

    color: #ffffff;
    text-shadow:
        0 0 14px rgba(180, 210, 255, 0.6),
        0 0 14px rgba(120, 180, 255, 0.4);
}

@media (max-width: 640px) {
    .site-footer {
        height: 72px;
    }

    .footer-text {
        font-size: 12px;
        letter-spacing: 1.5px;
    }
    .card-cta {
        font-size: 12px;
        letter-spacing: 0.8px;
    }
}