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

body {
    font-family: 'Vazir', 'Tahoma', sans-serif;
    min-height: 100vh;
    overflow: hidden;
    position: relative;
    background: #0a0a0a;
}

/* پس زمینه گرادینت متحرک */
.gradient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.gradient-bg div {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, 
        #ff00cc, #3333ff, #00ff99, #ff0066);
    background-size: 400% 400%;
    animation: gradientMove 15s ease infinite;
    opacity: 0.5;
}

.gradient-1 {
    filter: blur(100px);
}

.gradient-2 {
    animation-delay: -5s;
    background: linear-gradient(45deg, 
        #00ffcc, #ff33cc, #6600ff, #ff9900);
    filter: blur(120px);
}

.gradient-3 {
    animation-delay: -10s;
    background: linear-gradient(45deg, 
        #ff3300, #00ff00, #0066ff, #ff00aa);
    filter: blur(150px);
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* محتوای اصلی */
.container {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

/* لوگو */
.logo-container {
    margin-bottom: 30px;
    animation: float 3s ease-in-out infinite;
}

.logo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    box-shadow: 
        0 0 20px rgba(255, 255, 255, 0.5),
        0 0 40px rgba(255, 0, 255, 0.3),
        0 0 60px rgba(0, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.logo:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 
        0 0 30px rgba(255, 255, 255, 0.8),
        0 0 60px rgba(255, 0, 255, 0.5),
        0 0 90px rgba(0, 255, 255, 0.4);
}

/* متن نئونی */
.neon-text {
    font-size: 4rem;
    font-weight: bold;
    margin-bottom: 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.letter {
    display: inline-block;
    font-size: 4rem;
    color: white;
    text-shadow: 
        0 0 10px #fff,
        0 0 20px #fff,
        0 0 30px #fff,
        0 0 40px #ff00de,
        0 0 70px #ff00de,
        0 0 80px #ff00de,
        0 0 100px #ff00de;
    animation: neonPulse 1.5s ease-in-out infinite,
               letterFloat 3s ease-in-out infinite;
    margin: 0 2px;
}

.letter:nth-child(odd) {
    animation-delay: 0.1s, 0.2s;
    color: #ff99ff;
}

.letter:nth-child(3n) {
    animation-delay: 0.3s, 0.4s;
    color: #99ffff;
}

@keyframes neonPulse {
    0%, 100% {
        text-shadow: 
            0 0 10px #fff,
            0 0 20px #fff,
            0 0 30px #fff,
            0 0 40px #ff00de,
            0 0 70px #ff00de;
    }
    50% {
        text-shadow: 
            0 0 20px #fff,
            0 0 30px #fff,
            0 0 40px #fff,
            0 0 50px #ff00de,
            0 0 80px #ff00de,
            0 0 100px #ff00de;
    }
}

@keyframes letterFloat {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* زیرنویس */
.subtitle {
    font-size: 1.5rem;
    color: white;
    text-shadow: 
        0 0 10px #00ffff,
        0 0 20px #00ffff,
        0 0 30px #00ffff;
    animation: subtitleGlow 2s ease-in-out infinite;
}

@keyframes subtitleGlow {
    0%, 100% {
        opacity: 0.8;
        text-shadow: 0 0 10px #00ffff;
    }
    50% {
        opacity: 1;
        text-shadow: 0 0 20px #00ffff, 0 0 30px #00ffff;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .neon-text {
        font-size: 2.5rem;
    }
    
    .letter {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .logo {
        width: 100px;
        height: 100px;
    }
}