body {
    background: linear-gradient(to bottom right, #e0fbfc, #c2f2f2);
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden;
    position: relative;
}

.login-box {
    background-color: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    margin: 20px auto;
    position: relative;
    z-index: 1;
}

.bubble {
    position: absolute;
    border-radius: 50%;
    background: rgba(46, 216, 195, 0.2);
    animation: float 15s infinite ease-in-out;
    z-index: 0;
}

.bubble:nth-child(1) {
    width: 100px;
    height: 100px;
    left: 10%;
    top: 20%;
    animation-delay: 0s;
    background: rgba(46, 216, 195, 0.15);
}

.bubble:nth-child(2) {
    width: 150px;
    height: 150px;
    left: 70%;
    top: 40%;
    animation-delay: 2s;
    background: rgba(32, 178, 170, 0.2);
}

.bubble:nth-child(3) {
    width: 80px;
    height: 80px;
    left: 30%;
    top: 60%;
    animation-delay: 4s;
    background: rgba(64, 224, 208, 0.15);
}

.bubble:nth-child(4) {
    width: 120px;
    height: 120px;
    left: 60%;
    top: 10%;
    animation-delay: 6s;
    background: rgba(0, 206, 209, 0.2);
}

.bubble:nth-child(5) {
    width: 200px;
    height: 200px;
    left: 20%;
    top: 70%;
    animation-delay: 8s;
    background: rgba(72, 209, 204, 0.15);
}

.bubble:nth-child(6) {
    width: 90px;
    height: 90px;
    left: 80%;
    top: 80%;
    animation-delay: 10s;
    background: rgba(32, 178, 170, 0.2);
}

@keyframes float {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.8;
    }
    50% {
        transform: translateY(-100px) rotate(180deg);
        opacity: 1;
    }
    100% {
        transform: translateY(0) rotate(360deg);
        opacity: 0.8;
    }
}

.btn-primary {
    background-color: #2ed8c3;
    border: none;
    padding: 10px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #28c1ae;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

@media (max-width: 576px) {
    .login-box {
        padding: 1.5rem;
        margin: 10px;
    }
    
    body {
        padding: 10px;
    }
    
    h2 {
        font-size: 1.5rem;
    }

    .bubble {
        width: 60px !important;
        height: 60px !important;
    }
}

@media (max-width: 400px) {
    .login-box {
        padding: 1rem;
    }
}