.river-system-header {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
}

.river-system-header td {
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
}

.rising {
    color: var(--danger-color);
    font-weight: 600;
}

.falling {
    color: var(--success-color);
    font-weight: 600;
}

.steady {
    color: var(--info-color);
    font-weight: 600;
}

.minor-flood {
    background-color: var(--alert-warning-bg);
}

.moderate-flood {
    background-color: var(--status-unknown-bg);
}

.major-flood {
    background-color: var(--status-offline-bg);
}

.river-loading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    z-index: 10;
    color: var(--text-primary);
}

:root[data-theme="light"] .river-loading {
    background-color: rgba(255, 255, 255, 0.8);
}

.river-chart-container {
    width: 100%;
    height: 400px;
}

.river-data-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--danger-color);
    padding: 2rem;
}

.river-data-error svg {
    margin-bottom: 1rem;
    color: var(--danger-color);
}