* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #000000;
    overflow: hidden;
    font-family: Arial, sans-serif;
}

#container {
    width: 100vw;
    height: 100vh;
}

#controls {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 10;

    background: rgba(20, 20, 20, 0.9);
    padding: 15px;
    border: 1px solid #333;
    border-radius: 8px;

    color: white;
}

#controls label {
    display: block;
    margin-bottom: 10px;
    font-size: 14px;
}

#orbitalSelect {
    background: #111;
    color: #00ff66;

    border: 1px solid #00ff66;
    border-radius: 4px;

    padding: 8px 12px;
    font-size: 16px;

    cursor: pointer;
}

/* Particle size slider */

.slider-control {
    margin-top: 20px;
}

.slider-control label {
    display: block;
    margin-bottom: 10px;
    font-size: 14px;
    color: white;
}

.slider-control input[type="range"] {
    width: 100%;
    cursor: pointer;
    accent-color: #00ff66;
}

#particleSizeValue {
    color: #00ff66;
    font-weight: bold;
}

/* ------------------------------------
   Quantum information panel
------------------------------------ */

#orbitalInfo {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 330px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    z-index: 10;

    background: rgba(15, 15, 15, 0.92);
    border: 1px solid #333;
    border-radius: 8px;

    padding: 20px;
    color: white;
}

#orbitalInfo h2 {
    font-size: 18px;
    color: #00ff66;
    margin-bottom: 20px;
}

#orbitalInfo h3 {
    font-size: 14px;
    color: #aaa;
    margin-bottom: 12px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 13px;
}

.info-row span {
    color: #aaa;
}

.info-row strong {
    color: white;
    text-align: right;
}

.info-divider {
    height: 1px;
    background: #333;
    margin: 18px 0;
}

#wavefunctionEquation {
    font-size: 16px;
    color: #00ff66;
    overflow-x: auto;
    padding: 10px 0;
}

#orbitalDescription {
    color: #ccc;
    font-size: 13px;
    line-height: 1.6;
}

.phase-legend {
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 13px;
    color: #ccc;
}

.phase-legend span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.phase-legend i {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    display: inline-block;
}

.phase-positive {
    background: #00ff66;
}

.phase-negative {
    background: #0088ff;
}

/* Small screens */

@media (max-width: 700px) {
    #orbitalInfo {
        top: auto;
        bottom: 15px;
        right: 15px;
        width: min(330px, calc(100vw - 30px));
        max-height: 40vh;
    }
}

#probabilityEquation {
    font-size: 16px;
    color: #0088ff;
    overflow-x: auto;
    padding: 10px 0;
}

#orbitalInfo h3 {
    margin-top: 15px;
}