body {
    min-height: 100vh;
    background: #0e1a2b;
    overflow: hidden;
}
.bubbles {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: 0;
    pointer-events: none;
}
.bubble {
    position: absolute;
    bottom: -100px;
    background: rgba(255,255,255,0.07);
    border-radius: 50%;
    animation: rise 12s linear infinite;
}
@keyframes rise {
    to {
        transform: translateY(-110vh) scale(1.2);
        opacity: 0.2;
    }
}
.login-box {
    position: relative;
    z-index: 1;
    background: rgba(255,255,255,0.95);
    border-radius: 1rem;
    box-shadow: 0 4px 32px rgba(0,0,0,0.2);
    padding: 2rem 2.5rem;
    max-width: 370px;
    margin: 5vh auto;
}
.logo-img {
    max-width: 140px;
    display: block;
    margin: 0 auto 1rem auto;
}