:root {
    --panel-bg: #f7f4ea;
    --panel-border: #d9c9a7;
    --accent: #2e7d32;
    --accent-dark: #1b5e20;
}

body {
    margin: 0;
    padding: 0;
    font-family: "Trebuchet MS", "Segoe UI", Arial, sans-serif;
    background: #fffef7;
    color: #2b2b2b;
}

.wrap {
    display: grid;
    grid-template-rows: auto 1fr auto;
    gap: 12px;
    padding: 12px;
    box-sizing: border-box;
}

.panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    padding: 10px 12px;
}

.controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px 14px;
    align-items: end;
}

.control {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 14px;
}

label {
    font-weight: 600;
}

input[type="range"] {
    accent-color: var(--accent);
}

.actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

button {
    background: var(--accent);
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
}

button:hover {
    background: var(--accent-dark);
}

#plot {
    width: 100%;
    min-height: 360px;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
    background: #fff;
}

.stats h3 {
    margin: 0 0 6px 0;
    font-size: 15px;
    color: var(--accent-dark);
}

.stats p {
    margin: 2px 0;
    font-size: 14px;
}

.note {
    font-size: 13px;
    color: #4a4a4a;
}

@media (max-width: 700px) {
    .wrap {
        padding: 8px;
    }
}