body {
    overflow: hidden;
}

.start-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    z-index: 2;
}

.logo-card {
    width: 460px;
    max-width: 100%;
    padding: 45px 35px;
    text-align: center;
    border-radius: 18px;
    background: rgba(10, 15, 25, 0.82);
    border: 1px solid rgba(255,255,255,0.18);
    box-shadow: 0 0 40px rgba(0,0,0,0.7);
    backdrop-filter: blur(8px);
}

.logo-card h1 {
    margin: 0;
    font-size: 42px;
    letter-spacing: 1px;
}

.logo-card p {
    margin: 12px 0 34px;
    color: #cfd8e3;
}

.button-row {
    display: flex;
    gap: 18px;
    justify-content: center;
}

.menu-button {
    min-width: 130px;
    padding: 15px 22px;
    border-radius: 10px;
    text-decoration: none;
    color: white;
    font-weight: bold;
    letter-spacing: 0.5px;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.menu-button:hover {
    transform: translateY(-3px);
}

.menu-button.start {
    background: linear-gradient(135deg, #28a745, #1f7a34);
    box-shadow: 0 0 18px rgba(40,167,69,0.55);
}

.menu-button.login {
    background: linear-gradient(135deg, #2364d2, #163b82);
    box-shadow: 0 0 18px rgba(35,100,210,0.55);
}

.background-effects span {
    position: absolute;
    display: block;
    border-radius: 50%;
    opacity: 0.55;
    z-index: 1;
}

.ember {
    width: 8px;
    height: 8px;
    background: orange;
    animation: floatUp 8s infinite linear;
}

.ember:nth-child(1) {
    left: 15%;
    bottom: -20px;
    animation-delay: 0s;
}

.ember:nth-child(2) {
    left: 50%;
    bottom: -20px;
    animation-delay: 2s;
}

.ember:nth-child(3) {
    left: 80%;
    bottom: -20px;
    animation-delay: 4s;
}

.mist {
    width: 260px;
    height: 260px;
    background: rgba(70, 150, 255, 0.14);
    filter: blur(30px);
    top: 15%;
    left: 10%;
    animation: drift 12s infinite alternate ease-in-out;
}

@keyframes floatUp {
    from {
        transform: translateY(0) scale(1);
        opacity: 0.7;
    }

    to {
        transform: translateY(-110vh) scale(0.3);
        opacity: 0;
    }
}

@keyframes drift {
    from {
        transform: translateX(0);
    }

    to {
        transform: translateX(90px);
    }
}