:root {
    --bg-gradient-start: #0f172a;
    --bg-gradient-end: #1e1b4b;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --accent-hover: #60a5fa;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-primary);
    overflow: hidden;
}

.container {
    perspective: 1000px;
    padding: 2rem;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 4rem 3rem;
    text-align: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform-style: preserve-3d;
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    animation: fadeUp 1s ease-out forwards;
}

.card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.6);
}

.greeting {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #60a5fa, #a78bfa, #f472b6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: gradientShift 6s ease infinite;
    background-size: 200% 200%;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-weight: 400;
}

.interactive-btn {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    border-radius: 9999px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.4);
    position: relative;
    overflow: hidden;
}

.interactive-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.interactive-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 15px 25px -5px rgba(59, 130, 246, 0.5);
}

.interactive-btn:hover::before {
    left: 100%;
}

.interactive-btn:active {
    transform: translateY(1px);
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Magic effect classes added via JS */
.magic-sparkle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: white;
    border-radius: 50%;
    pointer-events: none;
    animation: sparkleAnim 1s ease-out forwards;
}

@keyframes sparkleAnim {
    0% {
        transform: scale(0) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: scale(1.5) translate(var(--tx), var(--ty)) rotate(180deg);
        opacity: 0;
    }
}