/* --- BỐ CỤC XƯỞNG THỢ MỘC --- */
.carpenter-arena {
    height: 220px;
    background: #d7ccc8;
    box-shadow: inset 0 0 20px rgba(0,0,0,0.6);
    position: relative; 
    overflow: hidden;
}

/* Nền bàn gỗ với vân gỗ */
.wood-table-bg {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-color: #a1887f;
    background-image: 
        repeating-radial-gradient(ellipse at center, rgba(0,0,0,0.05) 0, rgba(0,0,0,0.05) 5px, transparent 6px, transparent 15px),
        linear-gradient(90deg, #8d6e63 0%, #a1887f 20%, #795548 80%, #a1887f 100%);
    z-index: 1;
}

/* Khu vực đo đạc */
.measure-zone {
    position: absolute;
    top: 40%; left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 2;
}

/* Vật phẩm cần đo */
.wood-item {
    font-size: 3.5rem;
    filter: drop-shadow(0 5px 5px rgba(0,0,0,0.5));
    margin-bottom: 5px;
    transition: transform 0.3s;
}

/* Thước kẻ */
.ruler-tool {
    width: 180px;
    height: 30px;
    background: #ffecb3; /* Màu nhựa vàng của thước */
    border: 2px solid #ffb300;
    border-radius: 4px;
    position: relative;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

/* Các vạch chia mm trên thước */
.ruler-marks {
    width: 100%;
    height: 10px;
    background: repeating-linear-gradient(
        90deg,
        #000 0px,
        #000 1px,
        transparent 1px,
        transparent 5px
    );
    border-bottom: 2px solid #000;
}
/* Vạch dài cho cm */
.ruler-tool::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 15px;
    background: repeating-linear-gradient(
        90deg,
        #d32f2f 0px,
        #d32f2f 2px,
        transparent 2px,
        transparent 25px
    );
}

/* Hiệu ứng khi trả lời đúng (Vật phẩm nảy lên) */
.craft-success {
    animation: bounce-craft 0.6s ease-out forwards;
}
@keyframes bounce-craft {
    0% { transform: scale(1) translateY(0); }
    50% { transform: scale(1.2) translateY(-20px); filter: drop-shadow(0 10px 10px #ffeb3b); }
    100% { transform: scale(1) translateY(0); }
}

/* Nhân vật Thợ mộc */
.carpenter-char {
    position: absolute;
    bottom: 10px;
    left: 10%;
    font-size: 4.5rem;
    z-index: 5;
    filter: drop-shadow(3px 5px 4px rgba(0,0,0,0.6));
}

/* Nhảy mừng */
.happy-jump {
    animation: build-jump 0.8s ease-out forwards !important;
}
@keyframes build-jump {
    0% { transform: translateY(0); }
    50% { transform: translateY(-40px) 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; }