.container {
    max-width: 1000px;
    margin: auto;
    background: #fff;
    padding: 20px;
    border-radius: 12px;
    display: flex;
    gap: 25px;
}

/* SECTIONS */
.left, .right {
    flex: 1;
}

/* SLIDERS */
.slider-box {
    margin-bottom: 18px;
}

label {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
}

.value {
    color: #00b386;
    font-weight: bold;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 5px;
    background: #ddd;
    outline: none;
    appearance: none;
}

/* Thumb */
input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #00b386;
    cursor: pointer;
}

/* RESULT */
.result {
    background: #f0f4ff;
    padding: 15px;
    border-radius: 10px;
    margin-top: 20px;
}

/* CHART FIX */
.chart-box {
    width: 100%;
    height: 260px;
}

canvas {
    width: 100% !important;
    height: 100% !important;
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }

    .right {
        order: 2; /* 👈 moves donut BELOW calculator */
        margin-top: 20px;
    }

    .left {
        order: 1;
    }
}