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

html,
body {
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, #000405, #000405);
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden;
    position: relative;
    background-color: #000405;
}

.logo-screen {
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 2;
}

.logo-container {
    position: relative;
    animation: popIn 5s ease-out forwards;
    opacity: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

    .logo-container img {
        width: 60%;
        max-width: 700px;
        filter: drop-shadow(0 0 20px rgba(0, 255, 231, 0.5));
    }

.pulse-ring {
    position: absolute;
    width: 400px;
    height: 400px;
    border: 2px solid #00ffe7;
    border-radius: 50%;
    animation: ringPulse 6s ease-out infinite;
    opacity: 0.7;
    z-index: -1;
    /* Daha güçlü gölge */
    filter: drop-shadow(0 0 20px #00ffe7) drop-shadow(0 0 40px #00ffe7) drop-shadow(0 0 60px #00ffe7);
}

@keyframes popIn {
    0 % {
        transform: scale(0.7);
        opacity: 0;
    }

    50% {
        transform: scale(1.1);
        opacity: 1;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes ringPulse {
    0 % {
        transform: scale(1);
        opacity: 0.6;
    }

    100% {
        transform: scale(3);
        opacity: 0;
    }
}

.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    overflow: hidden;
    z-index: 1;
}

.particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: #00ffe7;
    border-radius: 50%;
    opacity: 0.2;
    animation: float 12s infinite linear;
}

@keyframes float {
    from {
        transform: translateY(100vh) translateX(0);
        opacity: 0.4;
    }

    to {
        transform: translateY(-10vh) translateX(20px);
        opacity: 0;
    }
}