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

body {
    min-height: 100vh;
    font-family: Arial, Helvetica, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* Full-screen background */
.background {
    position: fixed;
    inset: -25px;
    background-image: url("roofing.jpg");
    background-size: cover;
    background-position: center;
    filter: blur(6px);
    transform: scale(1.06);
    z-index: -2;
}

/* Dark layer for readability */
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.40);
    z-index: -1;
}

/* Center tile/card */
.welcome-card {
    width: min(80%, 620px);
    padding: 42px 45px;
    text-align: center;

    /* Slightly transparent */
    background: rgba(255, 255, 255, 0.76);

    /* Glass effect */
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);

    border: 1px solid rgba(255, 255, 255, 0.65);
    border-radius: 24px;

    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);

    animation: fadeUp 0.8s ease-out;
}

.logo {
    display: block;
    width: min(100%, 390px);
    max-height: 230px;
    object-fit: contain;
    margin: 0 auto 5px;
}

h1 {
    color: #151515;
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.15;
    margin-bottom: 14px;
    font-weight: 800;
}

p {
    color: #555;
    font-size: 17px;
    line-height: 1.6;
    max-width: 520px;
    margin: 0 auto 18px;
}

.enter-btn {
    display: inline-block;
    padding: 14px 34px;
    background: linear-gradient(135deg, #21a900, #087b00);
    color: white;
    text-decoration: none;
    font-size: 17px;
    font-weight: 700;
    border-radius: 10px;
    box-shadow: 0 7px 18px rgba(20, 130, 0, 0.30);
    transition: 0.25s ease;
}

.enter-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 24px rgba(20, 130, 0, 0.40);
    background: linear-gradient(135deg, #2abb00, #079000);
}

.enter-btn:active {
    transform: translateY(0);
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(25px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 600px) {
    .welcome-card {
        padding: 30px 22px;
        border-radius: 18px;
    }

    .logo {
        width: 280px;
        max-height: 180px;
    }

    h1 {
        font-size: 28px;
    }

    p {
        font-size: 15px;
    }

    .enter-btn {
        width: 100%;
    }
}