body {
    font-family: 'Fredoka One', cursive;
    background: #f0f8ff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    -webkit-user-select: none;
    -ms-user-select: none; 
    user-select: none;
}

#game-container {
    width: 95%;
    max-width: 800px;
    height: 95vh;
    max-height: 600px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
    position: relative;
    overflow: hidden;
}

.screen {
    display: none;
    width: 100%;
    height: 100%;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.screen.active {
    display: flex;
}

h1 {
    color: #ff6347;
    font-size: 2.5em;
    margin-bottom: 10px;
}

h2 {
    color: #4a4a4a;
    font-size: 1.5em;
    margin-bottom: 20px;
}

.banner-image {
    width: 80%;
    max-width: 400px;
    margin-bottom: 20px;
}

.trophy-image {
    width: 50%;
    max-width: 200px;
    margin-bottom: 20px;
}

.difficulty-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 15px 30px;
    font-size: 1.2em;
    font-family: 'Fredoka One', cursive;
    border: none;
    border-radius: 15px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    color: white;
    background: #1e90ff;
    box-shadow: 0 5px #1c7cd6;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px #1c7cd6;
}

.btn:active {
    transform: translateY(2px);
    box-shadow: 0 3px #1c7cd6;
}

.btn[data-difficulty="medium"] { background: #ffa500; box-shadow: 0 5px #cc8400; }
.btn[data-difficulty="hard"] { background: #ff4500; box-shadow: 0 5px #cc3700; }

.btn-icon {
    position: absolute;
    left: 20px;
    top: 15px;
    width: 50px;
    height: 50px;
    font-size: 2em;
    font-family: 'Fredoka One', cursive;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    color: white;
    background: #cccccc;
    box-shadow: 0 5px #aaaaaa;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0;
    line-height: 1;
}

.btn-icon:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px #aaaaaa;
}

.btn-icon:active {
    transform: translateY(2px);
    box-shadow: 0 3px #aaaaaa;
}

.game-header {
    position: absolute;
    top: 20px;
    width: calc(100% - 40px);
    display: flex;
    justify-content: space-between;
    font-size: 1.5em;
    color: #4a4a4a;
}

#prompt-container {
    margin-top: 50px;
    min-height: 50px;
}

#target-shape-container {
    margin: 10px 0;
    height: 120px;
}

#target-shape-container svg {
    width: 100px;
    height: 100px;
}

#options-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    padding: 20px;
}

.shape-option {
    width: 100px;
    height: 100px;
    border: 5px solid #ddd;
    border-radius: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: transform 0.2s, background-color 0.2s;
    background-color: #f9f9f9;
}

.shape-option:hover {
    transform: scale(1.1);
    background-color: #e9e9e9;
}

.shape-option svg {
    width: 70px;
    height: 70px;
}

.shape-option.correct {
    animation: correct-pulse 0.5s ease;
}

.shape-option.incorrect {
    animation: incorrect-shake 0.5s ease;
}

@keyframes correct-pulse {
    0% { transform: scale(1); background-color: #c8e6c9; border-color: #4caf50; }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); background-color: #f9f9f9; border-color: #ddd; }
}

@keyframes incorrect-shake {
    0%, 100% { transform: translateX(0); background-color: #ffcdd2; border-color: #f44336;}
    20% { transform: translateX(-10px); }
    40% { transform: translateX(10px); }
    60% { transform: translateX(-10px); }
    80% { transform: translateX(10px); }
}