html, body { 
    height: 100vh; 
    margin: 0; 
    overflow: hidden; 
    font-family: 'Poppins', sans-serif; 
    background: #000; 
}

.gateway-header { 
    position: fixed; 
    top: 0; 
    width: 100%; 
    z-index: 1000; 
    display: flex; 
    justify-content: center; 
}

.header-tab {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 10px 40px;
    width: 100%;
    max-width: 1300px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 4px 25px rgba(0,0,0,0.2);
    border-bottom-left-radius: 20px;
    border-bottom-right-radius: 20px;
    border: 1px solid rgba(255,255,255,0.3);
}

.header-logo { height: 70px; width: auto; }
.header-titles h1 { 
    margin: 0; 
    font-size: 1.05rem; 
    color: #111; 
    font-weight: 600; 
    letter-spacing: 0.5px;
    white-space: nowrap; 
}
.about-link { 
    margin-left: auto; 
    color: #111; 
    text-decoration: none; 
    font-size: 0.85rem; 
    font-weight: 600; 
    border-left: 1.5px solid #ddd; 
    padding-left: 20px; 
}

.gateway-container { 
    display: flex; 
    height: 100vh; 
    width: 100%; 
}

.gateway-part {
    flex: 1;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center; 
    text-decoration: none;
    overflow: hidden;
    transition: flex 0.7s cubic-bezier(0.25, 1, 0.3, 1);
}

.health { background: url('../images/health.jpg') center/cover no-repeat; }
.realestate { background: url('../images/realestate.jpg') center/cover no-repeat; }
.importexport { background: url('../images/importexport.jpg') center/cover no-repeat; }

.part-overlay { 
    position: absolute; 
    inset: 0; 
    background: rgba(0,0,0,0.1); 
    z-index: 1; 
    transition: 0.4s;
}

.part-content { 
    position: relative; 
    z-index: 5; 
    color: #fff; 
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.text-glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 20px 35px;
    border-radius: 20px;
    margin-bottom: 20px;
}

.part-content i { font-size: 2.2rem; margin-bottom: 10px; display: block; }

.part-content h2 { 
    font-size: 1.8rem; 
    margin: 0; 
    text-transform: uppercase; 
    letter-spacing: 1.5px; 
    white-space: nowrap; 
}

.part-content p { font-size: 0.85rem; margin: 0; opacity: 0.9; }

.enter-btn {
    display: inline-block;
    padding: 10px 35px;
    border: 1.5px solid #fff;
    border-radius: 40px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    transition: 0.3s;
}

@media (min-width: 901px) {
    .gateway-part:hover { flex: 1.6; }
    .gateway-part:hover .part-overlay { background: rgba(0,0,0,0); }
    .gateway-part:hover .enter-btn { background: #fff; color: #000; }
}

@media (max-width: 900px) {
    .gateway-container { flex-direction: column; }
    
    .header-tab { padding: 8px 15px; max-width: 92%; border-radius: 0 0 15px 15px; }
    .header-logo { height: 60px; }
    
    .header-titles h1 { 
        font-size: 0.65rem; 
        line-height: 1.2; 
        white-space: normal; 
    }

    .part-content h2 { 
        font-size: clamp(0.9rem, 4vw, 1.1rem); 
        letter-spacing: 0.5px; 
        white-space: nowrap; 
    }

    .part-content p { font-size: 0.65rem; }
    .about-link { font-size: 0.7rem; padding-left: 10px; }

    .gateway-part {
        flex: 1;
        justify-content: space-between; 
        padding: 20px 0;
        box-sizing: border-box;
    }

    .health { padding-top: 85px; }

    .text-glass {
        padding: 12px 15px; 
        width: 50%;
        margin-bottom: 0;
        border-radius: 15px;
    }

    .enter-btn {
        margin-bottom: 10px;
        padding: 6px 25px;
        font-size: 0.7rem;
    }

    .gateway-part:hover { flex: 1; }
}

.wa-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #25d366;
    color: white;
    width: 55px;
    height: 55px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    z-index: 2000;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(0,0,0,0.4);
}