/* Base styles */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f2f5;
    min-height: 100vh;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px;
}

/* Hero section */
.hero {
    position: relative;
    height: 50vh;
    width: 100%;
    overflow: hidden;
}

.hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    z-index: 1;
    width: 90%;
    max-width: 800px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin: 0 0 15px 0;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-content p {
    font-size: 1.5rem;
    margin: 0;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* Worksheet grid */
.worksheet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.worksheet-card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    text-decoration: none;
    color: #333;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.worksheet-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.worksheet-icon {
    font-size: 40px;
    margin-bottom: 15px;
    color: #1a73e8;
}

.worksheet-title {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #1a73e8;
}

.worksheet-description {
    color: #5f6368;
    font-size: 16px;
    margin: 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero {
        height: 40vh;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.2rem;
    }

    .container {
        padding: 20px;
    }

    .worksheet-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero {
        height: 30vh;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }
}