body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    line-height: 1.6;
    color: #333;
}

header {
    background-color: #007bff;
    color: white;
    padding: 1rem;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    margin: 0;
    font-size: 2rem;
    font-weight: bold;
}

nav {
    display: flex;
    gap: 1rem;
}

.nav-btn, header a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    background-color: rgba(255, 255, 255, 0.2);
    transition: background-color 0.3s;
}

.nav-btn:hover, header a:hover {
    background-color: rgba(255, 255, 255, 0.4);
}

main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.welcome {
    text-align: center;
    padding: 2rem;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.welcome h2 {
    color: #007bff;
    font-size: 1.5rem;
}

.play-btn, .tutorial-btn {
    padding: 0.8rem 1.5rem;
    margin: 0.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: transform 0.3s, background-color 0.3s;
}

.play-btn {
    background-color: #28a745;
    color: white;
}

.tutorial-btn {
    background-color: #ffc107;
    color: #333;
}

.play-btn:hover, .tutorial-btn:hover {
    transform: scale(1.05);
    background-color: #218838;
}

.game-area {
    display: flex;
    gap: 2rem;
    justify-content: center;
    align-items: flex-start;
}

.ad-container {
    width: 300px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    padding: 1rem;
    display: block;
}

.game-container {
    width: 600px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    text-align: center;
}

.timer, .mistakes {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: #007bff;
}

.grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.grid div {
    background-color: #e9ecef;
    padding: 1rem;
    border-radius: 5px;
    cursor: pointer;
    user-select: none;
    transition: background-color 0.3s, transform 0.2s;
    color: #333;
    font-weight: bold;
}

.grid div:hover {
    background-color: #dee2e6;
    transform: scale(1.05);
}

.grid div.selected {
    background-color: #007bff;
    color: white;
}

.controls button, .difficulty-btn {
    padding: 0.8rem 1.2rem;
    margin: 0.3rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s, transform 0.2s;
    background-color: #007bff;
    color: white;
}

.controls button:hover, .difficulty-btn:hover {
    background-color: #0056b3;
    transform: scale(1.05);
}

.difficulty-btn[data-selected] {
    background-color: #28a745;
}

select {
    padding: 0.5rem;
    margin-top: 1rem;
    border-radius: 5px;
    border: 1px solid #ced4da;
}

footer {
    background-color: #343a40;
    color: white;
    padding: 1rem;
    margin-top: 2rem;
    text-align: center;
}

.video-ad {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.social-share button {
    padding: 0.5rem 1rem;
    margin: 0.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    background-color: #007bff;
    color: white;
    transition: background-color 0.3s;
}

.social-share button:hover {
    background-color: #0056b3;
}

.modal {
    border: none;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.modal-content {
    background-color: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
}

.modal-content h2 {
    color: #007bff;
    margin-bottom: 1rem;
}

.modal-content button {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    background-color: #007bff;
    color: white;
    transition: background-color 0.3s;
}

.modal-content button:hover {
    background-color: #0056b3;
}

#feedbackForm {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

#feedbackForm textarea {
    padding: 0.5rem;
    border-radius: 5px;
    border: 1px solid #ced4da;
    resize: vertical;
    min-height: 100px;
}

#feedbackForm button {
    padding: 0.8rem 1.5rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .game-area {
        flex-direction: column;
        align-items: center;
    }

    .ad-container, .game-container {
        width: 100%;
        max-width: 600px;
    }

    .video-ad {
        width: 100%;
        max-width: 600px;
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.5rem;
    }

    nav {
        flex-direction: column;
        gap: 0.5rem;
    }

    .welcome {
        padding: 1rem;
    }

    .play-btn, .tutorial-btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .grid {
        grid-template-columns: repeat(2, 1fr);
    }
}