:root {
    --primary-color: #6c5ce7;
    --success-color: #2ed573;
    --error-color: #ff4757;
    --accent-color: #feca57;
    --bg-light: rgba(255, 255, 255, 0.95);
}

.game-container {
    background-color: var(--bg-light);
    border-radius: 40px;
    padding: 30px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1), inset 0 0 0 6px rgba(108, 92, 231, 0.1);
    border: 6px solid #fff;
    max-width: 800px;
    width: 95%;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 40px auto;
}

header h1 {
    font-size: clamp(2rem, 8vw, 3.5rem);
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.score-container {
    font-size: 1.2rem;
    font-weight: 800;
    color: #a4b0be;
    margin-bottom: 30px;
    background: #f1f2f6;
    padding: 8px 20px;
    border-radius: 20px;
    display: inline-block;
}

.subject-area {
    margin-bottom: 40px;
    display: flex;
    justify-content: center;
    width: 100%;
}

.subject-card {
    background: white;
    padding: 30px;
    border-radius: 35px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.08);
    border: 4px solid #f1f2f6;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 280px;
    max-width: 90%;
    animation: popIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.animal-img {
    width: 180px;
    height: 180px;
    object-fit: contain;
    margin-bottom: 15px;
}

.animal-name {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary-color);
}

.shadows-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    width: 100%;
}

.shadow-card {
    background: white;
    padding: 20px;
    border-radius: 30px;
    cursor: pointer;
    border: 4px solid #dfe4ea;
    width: 180px;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 8px 0 #dfe4ea, 0 10px 20px rgba(0,0,0,0.05);
}

.shadow-img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    opacity: 0.8;
    transition: transform 0.3s;
}

.shadow-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 13px 0 #dfe4ea, 0 15px 25px rgba(0,0,0,0.1);
}

.shadow-card:hover .shadow-img {
    transform: scale(1.1);
    opacity: 1;
}

.shadow-card.correct {
    background-color: var(--success-color);
    border-color: #21a351;
    box-shadow: 0 8px 0 #21a351;
    transform: scale(1.05);
}

.shadow-card.wrong {
    background-color: var(--error-color);
    border-color: #d93846;
    box-shadow: 0 8px 0 #d93846;
    animation: shake 0.4s;
}

.feedback-text {
    font-size: 2rem;
    font-weight: 900;
    margin: 20px 0;
    height: 40px;
}

.feedback-text.success { color: var(--success-color); }
.feedback-text.error { color: var(--error-color); }
.feedback-text.hidden { opacity: 0; }

.btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50px;
    padding: 15px 40px;
    font-size: 1.5rem;
    font-weight: 900;
    cursor: pointer;
    box-shadow: 0 8px 0 #4834d4;
    transition: all 0.1s;
    margin-top: 20px;
}

.btn:active {
    transform: translateY(6px);
    box-shadow: 0 2px 0 #4834d4;
}

.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) {
    .game-container { padding: 15px; margin-top: 60px; }
    .subject-card { width: 220px; padding: 15px; }
    .animal-img { width: 140px; height: 140px; }
    .animal-name { font-size: 1.6rem; }
    .shadows-container { gap: 10px; }
    .shadow-card { width: 100px; height: 100px; padding: 10px; }
    .shadow-img { width: 70px; height: 70px; }
}