:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --secondary: #f59e0b;
    --dark: #0f172a;
    --darker: #020617;
    --light: #f8fafc;
    --gray: #64748b;
    --light-gray: #e2e8f0;
    --darker-rgb: 2, 6, 23;
    --primary-rgb: 59, 130, 246;
    --primary-dark-rgb: 37, 99, 235;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    color: var(--light);
    min-height: 100vh;
}

.stars {
    position: fixed;
    width: 100vw;
    height: 100vh;
    top: 0;
    left: 0;
    z-index: 0;
    background: linear-gradient(145deg, var(--darker) 0%, var(--dark) 100%);
    overflow: hidden;
}

.star {
    position: absolute;
    background-color: white;
    border-radius: 50%;
    opacity: 0.4;
    animation: star-glow 3s infinite alternate;
}

@keyframes star-glow {
    0%, 100% {
        opacity: 0.4;
    }
    50% {
        opacity: 0.9;
    }
}

.wave {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100vw;
    height: 250px;
    background: radial-gradient(ellipse at 50% 100%, var(--primary), transparent 70%);
    opacity: 0.6;
    border-radius: 100% 100% 0 0;
    transform: scale(1.5, 1);
    filter: blur(50px);
    box-shadow: 0 0 100px 50px var(--primary);
    z-index: 1;
    animation: wave-animation 15s ease-in-out infinite alternate;
}

.wave-2 {
    position: fixed;
    bottom: -50px;
    left: 0;
    width: 100vw;
    height: 250px;
    background: radial-gradient(ellipse at 50% 100%, var(--primary-dark), transparent 70%);
    opacity: 0.8;
    border-radius: 100% 100% 0 0;
    transform: scale(1.8, 1);
    filter: blur(70px);
    box-shadow: 0 0 120px 60px var(--primary-dark);
    z-index: 1;
    animation: wave-animation 18s ease-in-out infinite alternate;
}

@keyframes wave-animation {
    0% {
        transform: scale(1.5, 1) translateX(0) translateY(0);
    }
    50% {
        transform: scale(1.8, 1.2) translateX(10%) translateY(-5%);
    }
    100% {
        transform: scale(1.5, 1) translateX(0) translateY(0);
    }
}

.glass-card {
    background-color: rgba(var(--darker-rgb), 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    overflow: hidden;
}