/* Official reference hydrography, independent of flood data and statistics. */
.river-network-control.leaflet-bar {
    position: relative;
    box-sizing: content-box;
    width: 34px;
    height: 34px;
    padding: 0;
    border: 1px solid var(--border-color, #cccccc);
    border-radius: 0;
    background: #ffffff;
    color: #333333;
    font-family: Georgia, 'Times New Roman', serif;
}
.river-network-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: #ffffff;
    color: #333333;
    cursor: pointer;
    transition: background 150ms ease, color 150ms ease;
}
.river-network-button:hover,
.river-network-button.active {
    background: #000000;
    color: #ffffff;
}
.river-network-panel {
    position: absolute;
    top: 0;
    left: 38px;
    box-sizing: border-box;
    width: 210px;
    max-height: 420px;
    overflow-y: auto;
    overscroll-behavior: contain;
    background: #ffffff;
    border: 1px solid #333333;
    box-shadow: var(--shadow-md, 0 2px 8px rgba(0, 0, 0, 0.18));
    z-index: 800;
}
.river-network-panel[hidden] {
    display: none !important;
}
.river-network-panel-header {
    padding: 0.55rem 0.85rem;
    border-bottom: 1px solid #e5e5e5;
    background: #fafafa;
    color: var(--text-muted, #666666);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.river-network-toggle {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.55rem 0.85rem;
    cursor: pointer;
    user-select: none;
    color: var(--text-primary, #111111);
    font-size: 0.82rem;
    line-height: 1.3;
    transition: background 150ms ease;
}
.river-network-toggle:hover {
    background: #f5f5f5;
}
.river-network-toggle input {
    flex: 0 0 auto;
    width: 14px;
    height: 14px;
    margin: 0;
    accent-color: #000000;
    cursor: pointer;
}
.river-network-swatch {
    box-sizing: border-box;
    flex: 0 0 14px;
    width: 14px;
    height: 14px;
    border: 2px solid currentColor;
    background: transparent;
}
.river-network-boundaries .river-network-toggle {
    border-top: 1px solid #f0f0f0;
}
.river-network-boundaries .river-network-swatch {
    border-style: dashed;
}
.river-network-status,
.river-network-context-status {
    margin: -2px 0.85rem 7px;
    color: #606872;
    font-size: 10px;
    line-height: 1.4;
}
.river-network-panel .river-network-status:not(.river-network-error),
.river-network-panel .river-network-context-status:not(.river-network-error) {
    /* Keep routine loading/count announcements available to screen readers. */
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}
.river-network-control :focus-visible {
    outline: 2px solid #000000;
    outline-offset: -2px;
}
.river-network-status.river-network-error,
.river-network-context-status.river-network-error {
    color: #8a4234;
}
.river-network-retry {
    margin: 0 0.85rem 7px;
    padding: 2px 5px;
    border: 1px solid #b3c1ca;
    border-radius: 3px;
    background: #fff;
    color: #335f7b;
    font: inherit;
    cursor: pointer;
}
.river-network-retry[hidden],
.river-network-context-status[hidden] {
    display: none;
}
.leaflet-tooltip.river-network-tooltip {
    /* Leaflet's absolute pane provides no intrinsic content width. Prevent
       normal wrapping from shrinking an automatic width to one character. */
    box-sizing: border-box;
    width: max-content;
    max-width: min(260px, calc(100vw - 48px));
    overflow-wrap: break-word;
    word-break: normal;
    white-space: normal;
    font: 12px/1.4 Inter, sans-serif;
}
.leaflet-popup.river-network-popup {
    /* Flood records use custom modals and hide Leaflet popups globally. */
    display: block !important;
    animation: none;
    cursor: auto;
    font: 12px/1.5 Inter, sans-serif;
}
.river-network-popup .leaflet-popup-content-wrapper {
    border: 1px solid rgba(0, 0, 0, 0.2);
    border-radius: 5px;
}
.river-network-popup .leaflet-popup-content {
    box-sizing: border-box;
    min-width: 210px;
    max-width: min(310px, calc(100vw - 60px));
    max-height: min(420px, calc(100vh - 180px));
    margin: 14px 25px 14px 14px;
    padding: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
    overflow-wrap: anywhere;
    font: 12px/1.5 Inter, sans-serif;
}
.river-network-popup a.leaflet-popup-close-button {
    display: block;
    width: 28px;
    height: 28px;
    color: #52606c;
    font: 20px/28px Arial, sans-serif;
}
.river-network-popup a.leaflet-popup-close-button:focus-visible {
    outline: 2px solid #277bb7;
    outline-offset: -3px;
}
.river-network-popup .leaflet-popup-content p {
    margin: 5px 0;
    white-space: pre-line;
    overflow-wrap: anywhere;
}
.river-network-quality-note {
    color: #666;
    font-size: 10px;
}
@media (max-width: 600px) {
    .river-network-popup .leaflet-popup-content {
        min-width: 180px;
        max-width: calc(100vw - 70px);
        max-height: calc(100vh - 200px);
    }
}
@media (max-width: 480px) {
    .river-network-panel {
        left: 0;
        top: 38px;
        width: 190px;
    }
}
/* A short landscape/tablet map cannot fit another button below the toolbar. */
@media (min-width: 481px) and (max-width: 1000px) and (max-height: 520px) {
    .river-network-control.leaflet-bar {
        position: absolute;
        left: 46px;
        top: 0;
    }
}