/* ===== CSS Variables ===== */
:root {
    --primary: #6366f1;
    --primary-light: #818cf8;
    --background: #0f172a;
    --text-primary: #f1f5f9;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    height: 100%;
}

body {
    font-family: var(--font-family);
    background: var(--background);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* ===== Background Decoration ===== */
body::before,
body::after {
    content: '';
    position: fixed;
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    opacity: 0.15;
    pointer-events: none;
    animation: float 20s infinite ease-in-out;
}

body::before {
    width: 500px;
    height: 500px;
    top: -250px;
    right: -150px;
}

body::after {
    width: 400px;
    height: 400px;
    bottom: -200px;
    left: -100px;
    animation-delay: 10s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(30px, -30px) scale(1.1);
    }

    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

/* ===== Main Title ===== */
h1 {
    font-size: 4rem;
    font-weight: 700;
    text-align: center;
    letter-spacing: 2px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 50%, #a855f7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInScale 1.2s ease-out;
    position: relative;
    z-index: 10;
    text-shadow: 0 0 40px rgba(99, 102, 241, 0.3);
    padding: 2rem;
}

@keyframes fadeInScale {
    0% {
        opacity: 0;
        transform: scale(0.8) translateY(20px);
    }

    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
        letter-spacing: 1px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
        letter-spacing: 0.5px;
        padding: 1rem;
    }
}