.game-container {
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 40px;
    padding: 4vw;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2), inset 0 0 0 6px rgba(255, 107, 107, 0.3);
    max-width: 900px;
    width: 95%;
    text-align: center;
    border: 6px solid #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 400px;
    margin-top: 40px;
}

header h1 {
    font-size: 3.5rem;
    font-weight: 900;
    color: #ff4757;
    margin-bottom: 20px;
    text-shadow: 2px 2px 0px rgba(0, 0, 0, 0.1);
    letter-spacing: -1px;
}

.objects-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
    min-height: 120px;
    padding: 20px;
    background: rgba(241, 242, 246, 0.5);
    border-radius: 30px;
    width: 100%;
    border: 3px dashed #dfe4ea;
}

.object-emoji {
    font-size: 4rem;
    animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    filter: drop-shadow(0 5px 10px rgba(0,0,0,0.15));
}

.options-container {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.option-btn {
    font-size: 2.5rem;
    font-weight: 900;
    width: 90px;
    height: 90px;
    border-radius: 25px;
    border: none;
    background-color: white;
    color: #2f3542;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s, background-color 0.2s;
    box-shadow: 0 8px 0 #dfe4ea, 0 15px 20px rgba(0,0,0,0.1);
    outline: none;
}

.option-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 0 #dfe4ea, 0 20px 25px rgba(0,0,0,0.15);
    background-color: #f1f2f6;
}

.option-btn:active {
    transform: translateY(6px);
    box-shadow: 0 2px 0 #dfe4ea, 0 5px 10px rgba(0,0,0,0.1);
}

.option-btn.correct {
    background-color: #2ed573;
    color: white;
    box-shadow: 0 8px 0 #21a351, 0 15px 20px rgba(0,0,0,0.2);
    transform: scale(1.1) translateY(-5px);
}

.option-btn.wrong {
    background-color: #ff4757;
    color: white;
    box-shadow: 0 4px 0 #d93846;
    animation: shake 0.4s;
    transform: translateY(4px);
}

.feedback-text {
    font-size: 1.8rem;
    font-weight: 900;
    height: 40px;
    margin-bottom: 20px;
    transition: color 0.3s, opacity 0.3s;
}

.feedback-text.hidden {
    opacity: 0;
}

.feedback-text.success { color: #2ed573; opacity: 1; text-shadow: 1px 1px 0px rgba(0,0,0,0.05); }
.feedback-text.error { color: #ff4757; opacity: 1; text-shadow: 1px 1px 0px rgba(0,0,0,0.05); }

.btn {
    background-color: #ff4757;
    color: white;
    border: none;
    border-radius: 50px;
    padding: 15px 30px;
    font-size: 1.3rem;
    font-weight: 900;
    cursor: pointer;
    box-shadow: 0 8px 0 #d93846, 0 15px 20px rgba(0,0,0,0.1);
    transition: transform 0.15s, box-shadow 0.15s;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 20px;
    outline: none;
}

.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 0 #d93846, 0 18px 25px rgba(0,0,0,0.15); }
.btn:active { transform: translateY(6px); box-shadow: 0 2px 0 #d93846; }
.btn.hidden { display: none; }

@keyframes popIn {
    0% { transform: scale(0.5); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    50% { transform: translateX(10px); }
    75% { transform: translateX(-10px); }
}

@media (max-width: 600px) {
    .object-emoji { font-size: 3rem; }
    .option-btn { width: 75px; height: 75px; font-size: 2rem; }
    .btn-back-hub { top: 10px; right: 10px; font-size: 0.9rem; padding: 8px 15px; }
}

.btn-large { font-size: 1.5rem; padding: 18px 40px; margin-top: 20px; }