:root {
    --bg-color: #0d0d15;
    --card-bg: rgba(255, 255, 255, 0.05);
    --primary-color: #6a11cb;
    --secondary-color: #2575fc;
    --text-color: #ffffff;
    --text-muted: #a0a0a0;
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --glow: 0 0 20px rgba(106, 17, 203, 0.4);
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Pretendard', 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    background-image: radial-gradient(circle at top left, rgba(106, 17, 203, 0.3), transparent 40%),
        radial-gradient(circle at bottom right, rgba(37, 117, 252, 0.3), transparent 40%);
    background-attachment: fixed;
    min-height: 100vh;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    text-align: center;
}

header {
    margin-bottom: 40px;
    margin-top: 20px;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #fff 0%, #a0a0ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(106, 17, 203, 0.5);
}

p.subtitle {
    color: var(--text-muted);
    font-size: 1rem;
}

.card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 40px;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: var(--glass-border);
    border-radius: 20px;
    padding: 30px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5), var(--glow);
    border-color: rgba(255, 255, 255, 0.3);
}

.card-icon {
    font-size: 3rem;
    margin-right: 20px;
}

.card-content {
    text-align: left;
    flex: 1;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0 0 5px 0;
}

.card-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

.arrow {
    font-size: 1.5rem;
    opacity: 0.5;
    transition: opacity 0.3s;
}

.card:hover .arrow {
    opacity: 1;
}

footer {
    margin-top: 50px;
    color: var(--text-muted);
    font-size: 0.8rem;
    opacity: 0.6;
}

/* Animations */
@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }

    100% {
        transform: translateY(0px);
    }
}

.floating {
    animation: float 6s ease-in-out infinite;
}

@media (min-width: 600px) {
    .card-grid {
        grid-template-columns: 1fr 1fr;
    }
}