:root {
    --primary-color: #6366f1;
    --background-light: #f8fafc;
    --background-dark: #0f172a;
    --text-light: #1e293b;
    --text-dark: #f8fafc;
    --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--background-light);
    padding: 1rem;
}

.container {
    text-align: center;
    max-width: 480px;
    padding: 2.5rem;
    border-radius: 16px;
    background: white;
    box-shadow: var(--shadow);
    animation: fadeIn 0.8s ease-out;
}

.logo {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    animation: float 4s ease-in-out infinite;
}

h1 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 1.2rem;
    line-height: 1.3;
}

p {
    font-size: 1rem;
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.progress-container {
    width: 100%;
    height: 4px;
    background: #e2e8f0;
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar {
    width: 60%;
    height: 100%;
    background: var(--primary-color);
    animation: progress 2s ease-in-out infinite;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0); }
}

@keyframes progress {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(280%); }
}

@media (prefers-color-scheme: dark) {
    body {
        background-color: var(--background-dark);
    }
    .container {
        background: #1e293b;
    }
    h1 {
        color: var(--text-dark);
    }
    p {
        color: #94a3b8;
    }
    .progress-container {
        background: #334155;
    }
}