/* --- BỐ CỤC CÔNG VIÊN JURA --- */
.jungle-arena {
    height: 180px;
    background: linear-gradient(180deg, #81c784 0%, #388e3c 50%, #1b5e20 100%);
    box-shadow: inset 0 0 20px rgba(0,0,0,0.5);
    position: relative;
    overflow: hidden;
    border: 4px solid #8d6e63; /* Khung hàng rào gỗ */
    border-radius: 12px;
}

/* Cây cối trong rừng */
.trees-bg {
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 200%;
    font-size: 3.5rem;
    white-space: nowrap;
    animation: pan-jungle 15s linear infinite;
    z-index: 1;
}
.trees-bg::before { content: '🌴 🌲  🌴    🌲🌴   🌲   🌴'; }
@keyframes pan-jungle {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Khủng long (Chính giữa) */
.dino-char {
    position: absolute;
    left: 45%;
    bottom: 10%;
    font-size: 4.5rem;
    z-index: 3;
    transition: all 0.3s ease;
    filter: drop-shadow(-3px 5px 5px rgba(0,0,0,0.4));
}
.idle {
    animation: dino-breath 1.5s ease-in-out infinite alternate;
}
@keyframes dino-breath {
    0% { transform: scaleY(1); }
    100% { transform: scaleY(1.05); }
}

/* Thức ăn rơi xuống */
.dino-food {
    position: absolute;
    left: 50%;
    top: -50px;
    font-size: 2.5rem;
    z-index: 4;
}
.drop-food {
    animation: falling-food 0.5s cubic-bezier(0.55, 0.085, 0.68, 0.53) forwards;
}
@keyframes falling-food {
    0% { transform: translateY(0); opacity: 1; }
    90% { transform: translateY(120px); opacity: 1; }
    100% { transform: translateY(130px); opacity: 0; }
}

/* Khủng long ăn no vui vẻ */
.happy-dino {
    animation: dino-jump 0.6s ease-out;
}
@keyframes dino-jump {
    0% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0); }
}

/* Khủng long giận dữ rung lắc */
.shake-error { animation: dino-roar 0.4s; }
@keyframes dino-roar {
    0% { transform: translateX(0) scale(1.1); filter: sepia(1) hue-rotate(-50deg) saturate(3); }
    25% { transform: translateX(-15px) scale(1.1); }
    50% { transform: translateX(15px) scale(1.1); }
    75% { transform: translateX(-15px) scale(1.1); }
    100% { transform: translateX(0) scale(1); filter: none; }
}

.min-h-75 { min-height: 90px; }
.hl-num { color: #d32f2f; font-weight: 900; font-size: 1.2em; }