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

body {
    background: #000;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

/* Animated gradient background */
.gradient-bg {
    position: absolute;
    width: 200%;
    height: 200%;
    top: -50%;
    left: -50%;
    background: radial-gradient(circle at 20% 50%, rgba(74, 144, 226, 0.3) 0%, transparent 50%),
                radial-gradient(circle at 80% 50%, rgba(107, 70, 193, 0.3) 0%, transparent 50%),
                radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.02) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Particle field */
.particles {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: white;
    opacity: 0;
    border-radius: 50%;
    animation: float-up 10s linear infinite;
}

@keyframes float-up {
    0% {
        transform: translateY(100vh) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 0.5;
    }
    90% {
        opacity: 0.5;
    }
    100% {
        transform: translateY(-100vh) translateX(100px);
        opacity: 0;
    }
}

/* Logo container */
.logo-container {
    position: relative;
    z-index: 10;
    animation: logo-entrance 2s ease-out;
}

@keyframes logo-entrance {
    0% {
        transform: scale(0.3) rotate(180deg);
        opacity: 0;
    }
    50% {
        transform: scale(1.1) rotate(0deg);
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

.logo {
    width: 500px;
    max-width: 80vw;
    height: auto;
    filter: drop-shadow(0 0 30px rgba(255, 255, 255, 0.3));
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% {
        filter: drop-shadow(0 0 30px rgba(255, 255, 255, 0.3)) brightness(1);
    }
    50% {
        filter: drop-shadow(0 0 50px rgba(74, 144, 226, 0.8)) brightness(1.1);
    }
}

/* Scanning line effect */
.scan-line {
    position: absolute;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.8), transparent);
    animation: scan 3s linear infinite;
}

@keyframes scan {
    0% {
        transform: translateY(-100vh);
    }
    100% {
        transform: translateY(100vh);
    }
}

/* Grid overlay */
.grid-overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: grid-move 20s linear infinite;
}

@keyframes grid-move {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

/* Glitch effect on hover */
.logo-container:hover .logo {
    animation: glitch 0.3s ease-in-out;
}

@keyframes glitch {
    0%, 100% {
        transform: translate(0);
        filter: drop-shadow(0 0 30px rgba(255, 255, 255, 0.3)) brightness(1);
    }
    20% {
        transform: translate(-2px, 2px);
        filter: drop-shadow(0 0 30px rgba(255, 0, 0, 0.5)) brightness(1.2);
    }
    40% {
        transform: translate(2px, -2px);
        filter: drop-shadow(0 0 30px rgba(0, 255, 0, 0.5)) brightness(0.9);
    }
    60% {
        transform: translate(-2px, -2px);
        filter: drop-shadow(0 0 30px rgba(0, 0, 255, 0.5)) brightness(1.1);
    }
    80% {
        transform: translate(2px, 2px);
        filter: drop-shadow(0 0 30px rgba(255, 255, 255, 0.5)) brightness(0.95);
    }
}

/* Orbiting dots */
.orbit-container {
    position: absolute;
    width: 600px;
    height: 600px;
    animation: orbit-rotate 20s linear infinite;
}

.orbit-dot {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(74, 144, 226, 0.8);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(74, 144, 226, 0.6);
}

.orbit-dot:nth-child(1) {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.orbit-dot:nth-child(2) {
    top: 50%;
    right: 0;
    transform: translateY(-50%);
}

.orbit-dot:nth-child(3) {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.orbit-dot:nth-child(4) {
    top: 50%;
    left: 0;
    transform: translateY(-50%);
}

@keyframes orbit-rotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Ripple animation */
@keyframes ripple {
    0% {
        width: 10px;
        height: 10px;
        opacity: 0.5;
    }
    100% {
        width: 300px;
        height: 300px;
        opacity: 0;
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .logo {
        width: 300px;
    }
    .orbit-container {
        width: 400px;
        height: 400px;
    }
}