body {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    background:
        linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)),
        linear-gradient(120deg, #ff9a9e, #fad0c4, #a1c4fd, #c2e9fb, #fbc2eb, #a6c1ee);
    background-size: 500% 500%;
    animation: bgAnimation 18s ease infinite;
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    overflow: hidden;
    padding: 20px;
}

@keyframes bgAnimation {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* ===== Shining Gradient Text ===== */
h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    position: relative;
    overflow: hidden;
    text-align: center;
    padding: 0 10px;
    background: linear-gradient(90deg, #fff, #ffd700, #fff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    border-radius: 5px;
}

h1::after {
    content: "";
    position: absolute;
    left: -100%;
    top: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.7), transparent);
    animation: textShine 3s linear infinite;
}

@keyframes textShine {
    0% {
        left: -100%;
    }

    100% {
        left: 100%;
    }
}

/* ===== Floating Glassmorphism Card ===== */
.card {
    background: rgba(255, 255, 255, 0.08);
    padding: 30px 50px;
    border-radius: 20px;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    animation: float 5s ease-in-out infinite;
    text-align: center;
    max-width: 400px;
    transition: box-shadow 0.3s ease;
}

.card:hover {
    box-shadow: 0 12px 40px rgba(255, 255, 255, 0.4);
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-15px);
    }
}

/* ===== Premium Glowing Button ===== */
.btn {
    display: inline-block;
    margin-top: 25px;
    padding: 14px 40px;
    font-size: 1.2rem;
    color: white;
    border: none;
    background: linear-gradient(45deg, #ff6ec4, #7873f5, #4ade80);
    background-size: 300% 300%;
    animation: btnGradient 6s ease infinite;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.4);
    position: relative;
    overflow: hidden;
}

.btn:hover {
    transform: scale(1.08);
    box-shadow: 0 0 25px rgba(255, 255, 255, 0.8);
}

.btn::after {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.3);
    transform: skewX(-30deg);
    transition: 0.5s;
}

.btn:hover::after {
    left: 100%;
}

@keyframes btnGradient {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* ===== Responsive Text in Card ===== */
.card p {
    font-size: clamp(0.9rem, 2vw, 1.1rem);
}

/* ===== Responsive Media Queries ===== */
@media screen and (max-width: 768px) {
    body {
        padding: 15px;
    }

    h1 {
        font-size: clamp(1.5rem, 6vw, 2.8rem);
    }

    .card {
        padding: 25px 30px;
        max-width: 90%;
    }

    .btn {
        padding: 12px 30px;
        font-size: 1rem;
    }
}

@media screen and (max-width: 480px) {
    h1 {
        font-size: clamp(1.2rem, 7vw, 2rem);
    }

    .card {
        padding: 20px 20px;
        max-width: 95%;
    }

    .btn {
        padding: 10px 25px;
        font-size: 0.95rem;
    }
}