:root {
    --bg-dark: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    --bg-light: #ffffff;
    --text-dark: #f8f9fa;
    --text-light: #212529;
}

html[data-theme='dark'] body {
    background: var(--bg-dark);
    color: var(--text-dark);
}

html[data-theme='light'] body {
    background: var(--bg-light);
    color: var(--text-light);
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
}

.container {
    flex: 1;
}

.card {
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

html[data-theme='dark'] .card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
}

html[data-theme='light'] .card {
    background: #ffffff;
    border: 1px solid #e0e0e0;
}

.card:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
}

.card i {
    font-size: 2rem;
    margin-bottom: 10px;
    
}

.footer {
    padding-top: 20px;
}