/* Return Over Time styles */
.rot-container {
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 0;
    margin: 0;
    max-width: none;
}

.rot-header {
    text-align: center;
    padding: 1.5rem 1rem 0.5rem;
}

.rot-header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.rot-desc {
    color: var(--text-dim);
    margin-bottom: 0.25rem;
}

.rot-note {
    color: var(--text-dim);
    font-size: 0.9rem;
}

.rot-controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    padding: 0.5rem 1rem 1rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 180px;
}

.control-group label {
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
    text-align: center;
    color: var(--text-dim);
}

.control-inputs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-inputs input[type="range"] {
    width: 160px;
}

.control-inputs input[type="number"] {
    width: 80px;
    padding: 0.25rem;
    background: var(--input);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: #e9a0dd;
    font-size: 0.9rem;
}

.control-inputs .unit {
    color: var(--text-dim);
}

.control-val {
    font-size: 0.95rem;
    color: #6b6b6b;
    margin-top: 0.25rem;
}

.rot-plot {
    flex: 1;
    min-height: 0;
    position: relative;
}

.rot-legend {
    position: absolute;
    top: 18px;
    left: 18px;
    background: rgba(40, 40, 40, 0.92);
    border: 1px solid #444;
    border-radius: 7px;
    padding: 10px 18px;
    font-size: 1rem;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0,0,0,0.18);
    pointer-events: none;
}

.legend-label {
    color: var(--text-dim);
    margin-right: 0.5rem;
}

.legend-value {
    color: #e9a0dd;
    font-weight: bold;
}

.rot-footer {
    text-align: center;
    padding: 0.75rem;
    color: #888;
    font-size: 0.95rem;
}

.help-btn {
    position: fixed;
    top: 35%;
    right: 40px;
    transform: translateY(-50%);
    background: #393939;
    color: #e0e0e0;
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5em;
    font-weight: bold;
    border: 1px solid #444;
    box-shadow: 0 2px 8px rgba(0,0,0,0.14);
    z-index: 101;
    cursor: pointer;
    transition: background 0.2s;
}

.help-btn:hover {
    background: #4a4a4a;
}

.help-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(40, 40, 40, 0.97);
    color: #e0e0e0;
    border: 1px solid #444;
    border-radius: 12px;
    padding: 22px 28px;
    font-size: 1.08em;
    z-index: 102;
    box-shadow: 0 6px 24px rgba(0,0,0,0.22);
    max-width: 360px;
    width: 90vw;
    text-align: left;
    overflow-y: auto;
    max-height: 80vh;
}

@media (max-width: 700px) {
    .rot-controls {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .rot-legend {
        top: 8px;
        left: 8px;
        font-size: 0.95rem;
        padding: 7px 10px;
    }
}