/* --- BỐ CỤC TIỆM TRÀ SỮA --- */
.boba-arena {
    height: 220px;
    background: linear-gradient(180deg, #bbdefb 0%, #64b5f6 100%);
    box-shadow: inset 0 0 20px rgba(0,0,0,0.3);
    position: relative; 
    overflow: hidden;
}

/* Tường và quầy bar caro nhạt */
.boba-counter-bg {
    position: absolute;
    bottom: 0; left: 0;
    width: 100%; height: 60px;
    background: #ffcc80;
    background-image: 
        linear-gradient(90deg, rgba(255,255,255,0.4) 50%, transparent 50%),
        linear-gradient(rgba(255,255,255,0.4) 50%, transparent 50%);
    background-size: 20px 20px;
    border-top: 5px solid #ef6c00;
    z-index: 1;
}

/* Ly trà sữa */
.boba-cup-wrapper {
    position: absolute;
    bottom: 50px;
    left: 55%;
    transform: translateX(-50%);
    z-index: 2;
}

.boba-cup {
    width: 70px;
    height: 100px;
    background: rgba(255, 255, 255, 0.4);
    border: 4px solid #fff;
    border-top: none;
    border-radius: 5px 5px 20px 20px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 5px 10px rgba(0,0,0,0.2);
}

.boba-cup::before {
    content: '';
    position: absolute;
    top: -4px; left: -5px;
    width: 80px; height: 10px;
    background: #fff;
    border-radius: 5px;
}

/* Nước bên trong */
.liquid-fill {
    position: absolute;
    bottom: 0; left: 0;
    width: 100%; height: 0%; /* Khởi đầu rỗng */
    background: #ffccbc; /* Màu trà sữa ngả cam */
    transition: height 1s cubic-bezier(0.25, 1, 0.5, 1);
    z-index: 1;
}

.fill-up {
    height: 85% !important;
}

/* Hạt trân châu */
.boba-pearls {
    position: absolute;
    bottom: 5px;
    width: 100%;
    display: flex;
    justify-content: space-around;
    z-index: 2;
}

.pearl {
    width: 15px; height: 15px;
    background: #3e2723; /* Màu đen trân châu */
    border-radius: 50%;
    box-shadow: inset -2px -2px 0 rgba(0,0,0,0.5);
    animation: float-pearl 2s infinite alternate;
}

.pearl:nth-child(2) { animation-delay: 0.5s; width: 12px; height: 12px; }
.pearl:nth-child(3) { animation-delay: 1s; width: 14px; height: 14px; }

@keyframes float-pearl {
    0% { transform: translateY(0); }
    100% { transform: translateY(-5px); }
}

.floating-icon {
    position: absolute;
    top: 30%; left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    z-index: 3;
    opacity: 0.8;
}

/* Nhân vật Barista */
.barista-char {
    position: absolute;
    bottom: 20px;
    left: 10%;
    font-size: 4.5rem;
    z-index: 5;
    filter: drop-shadow(3px 5px 4px rgba(0,0,0,0.4));
}

/* Nhảy mừng */
.happy-jump {
    animation: build-jump 0.8s ease-out forwards !important;
}
@keyframes build-jump {
    0% { transform: translateY(0); }
    50% { transform: translateY(-30px) scale(1.1); }
    100% { transform: translateY(0); }
}

/* Rung lắc khi sai */
.shake-error { animation: shake-char 0.4s !important; }
@keyframes shake-char {
    0% { transform: translateX(0); }
    25% { transform: translateX(-15px) rotate(-10deg); }
    50% { transform: translateX(15px) rotate(10deg); }
    75% { transform: translateX(-15px) rotate(-10deg); }
    100% { transform: translateX(0); }
}

.min-h-75 { min-height: 85px; }