.demo-page { background: #07131e; min-height: 100vh; }
.demo-warning { background: #e0a535; color: #101d26; text-align: center; padding: 9px 14px; font-size: 12px; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.demo-top { min-height: 66px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.demo-top .brand img { width: 38px; height: 38px; }
.demo-top-actions { display: flex; gap: 10px; align-items: center; }
.demo-top-actions a { font-size: 12px; color: #c5d9e2; }
.demo-top-actions a:hover { color: var(--teal); }
.demo-shell { display: grid; grid-template-columns: minmax(0, 1fr) 330px; min-height: calc(100vh - 103px); border-top: 1px solid var(--line); }
.demo-map { position: relative; min-height: 690px; overflow: hidden; background: #bce8ef url("helm-demo-chart.png") center center / cover no-repeat; }
.demo-map::before { content: attr(data-label); position: absolute; left: 22px; top: 18px; color: #071725; background: rgba(243,250,251,.88); border: 1px solid rgba(7,23,37,.22); border-radius: 6px; padding: 5px 8px; font: 10px var(--mono); letter-spacing: .12em; z-index: 4; }
.demo-map::after { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; background: rgba(239,250,252,.06); }
.depth { position: absolute; color: rgba(10,74,92,.53); font: 11px var(--mono); }
.d1 { left: 40%; top: 24%; }.d2 { left: 64%; top: 64%; }.d3 { left: 21%; top: 51%; }.d4 { left: 77%; top: 19%; }
.land { position: absolute; background: #d7bd73; border: 2px solid #526f4b; opacity: .92; }
.land-a { width: 36%; height: 32%; left: -8%; bottom: -6%; border-radius: 58% 42% 18% 0; transform: rotate(-7deg); }
.land-b { width: 25%; height: 38%; right: -7%; top: -5%; border-radius: 18% 0 0 64%; transform: rotate(10deg); }
.land-c { width: 16%; height: 12%; left: 53%; top: 17%; border-radius: 62% 38% 55% 45%; transform: rotate(-16deg); }
.land-d { width: 12%; height: 8%; left: 34%; top: 38%; border-radius: 70% 30% 60% 40%; transform: rotate(12deg); }
.route-line { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 2; pointer-events: none; }
.route-line polyline { fill: none; stroke: rgba(31,108,129,.63); stroke-width: 2; stroke-dasharray: 8 7; }
.place-marker { position: absolute; z-index: 7; transform: translate(-50%, -50%); border: 0; background: transparent; cursor: pointer; display: grid; place-items: center; }
.place-marker .symbol { width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; border: 3px solid white; box-shadow: 0 3px 12px rgba(0,0,0,.35); font-size: 11px; font-weight: 900; color: #10202a; }
.place-marker .label { position: absolute; top: 28px; left: 50%; transform: translateX(-50%); padding: 4px 7px; border-radius: 5px; white-space: nowrap; background: rgba(7,23,37,.87); color: white; font-size: 10px; }
.place-marker.waypoint .symbol { background: #69c58a; }
.place-marker.hazard .symbol { background: #f26a21; border-radius: 4px; transform: rotate(45deg); }
.place-marker.hazard .symbol span { transform: rotate(-45deg); }
.place-marker.fishing .symbol { background: #a26bd1; }
.place-marker.filtered, .saved-item.filtered { display: none; }
.boat { position: absolute; z-index: 10; width: 28px; height: 28px; margin: -14px 0 0 -14px; border-radius: 50% 50% 50% 8px; background: #166b84; border: 3px solid white; box-shadow: 0 5px 17px rgba(0,0,0,.35); transition: left .18s linear, top .18s linear, transform .18s linear; }
.boat::after { content: ""; position: absolute; width: 7px; height: 7px; border-radius: 50%; background: white; left: 8px; top: 8px; }
.boat-tag { position: absolute; top: 31px; left: 50%; transform: translateX(-50%); background: #071725; color: white; border-radius: 5px; padding: 3px 6px; font: 9px var(--mono); white-space: nowrap; }
.anchor-zone { position: absolute; z-index: 3; width: 112px; height: 112px; left: 54%; top: 67%; transform: translate(-50%, -50%); border: 2px dashed #e0a535; background: rgba(224,165,53,.10); border-radius: 50%; }
.anchor-zone.off { display: none; }
.anchor-pin { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); color: #7d5509; font-size: 24px; }
.scale { position: absolute; left: 18px; bottom: 17px; z-index: 5; color: #173d4d; font: 10px var(--mono); }
.scale::before { content: ""; display: block; width: 75px; border-top: 3px solid #173d4d; margin-bottom: 4px; }
.map-note { position: absolute; right: 18px; bottom: 16px; z-index: 5; max-width: 240px; padding: 8px 10px; border: 1px solid rgba(7,23,37,.22); background: rgba(244,250,251,.84); color: #183e4b; font-size: 10px; border-radius: 7px; }

.demo-panel { background: #172834; border-left: 1px solid rgba(255,255,255,.12); padding: 18px; overflow-y: auto; }
.app-title { display: flex; align-items: baseline; gap: 8px; border-bottom: 1px solid var(--line); padding-bottom: 15px; }
.app-title strong { font: 22px var(--display); }.app-title span { color: var(--brass-light); font: 10px var(--mono); }
.sim-status { margin: 15px 0; padding: 11px; border-radius: 9px; background: rgba(105,197,138,.11); border: 1px solid rgba(105,197,138,.24); font-size: 12px; }
.sim-status strong { color: #8be2ae; }
.data-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.data-cell { padding: 9px; border-radius: 8px; background: #0e202d; border: 1px solid var(--line); }
.data-cell small { color: var(--muted); display: block; font-size: 9px; text-transform: uppercase; }.data-cell b { font: 14px var(--mono); }
.control-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 7px; margin: 13px 0 17px; }
.control-row button, .filter-grid button, .anchor-toggle { min-height: 38px; border: 1px solid var(--line); border-radius: 8px; background: #293d4a; color: white; cursor: pointer; font-size: 11px; font-weight: 800; }
.control-row button.primary { background: var(--orange); color: #111; border-color: transparent; }
.control-row button.sound-on { background: var(--green); color: #10202a; border-color: transparent; }
.control-row button:hover, .filter-grid button:hover, .anchor-toggle:hover { border-color: var(--teal); }
.panel-section { padding: 16px 0; border-top: 1px solid var(--line); }
.panel-section h2 { font-family: var(--body); font-size: 15px; letter-spacing: 0; margin: 0 0 10px; }
.panel-section p { color: var(--muted); font-size: 11px; margin-bottom: 10px; }
.filter-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.filter-grid button.active { background: #69c58a; color: #10202a; border-color: transparent; }
.saved-list { display: grid; gap: 7px; margin-top: 11px; }
.saved-item { display: grid; grid-template-columns: 10px 1fr; gap: 9px; padding: 9px; border-radius: 8px; background: #0e202d; }
.saved-dot { width: 9px; height: 9px; border-radius: 50%; margin-top: 4px; background: var(--green); }
.saved-item[data-cat="hazard"] .saved-dot { background: var(--orange); border-radius: 2px; transform: rotate(45deg); }
.saved-item[data-cat="fishing"] .saved-dot { background: #a26bd1; }
.saved-item strong { display: block; font-size: 11px; }.saved-item small { color: var(--muted); font-size: 9px; }
.anchor-card { padding: 12px; border-radius: 9px; background: rgba(224,165,53,.09); border: 1px solid rgba(224,165,53,.28); }
.anchor-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.anchor-head strong { color: var(--brass-light); font-size: 12px; }
.anchor-toggle.active { background: var(--green); color: #10202a; border-color: transparent; }
.radius-row { margin-top: 12px; display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: center; }
.radius-row input { width: 100%; accent-color: var(--brass); }
.radius-row output { font: 11px var(--mono); color: white; min-width: 42px; }
.demo-log { min-height: 62px; max-height: 110px; overflow-y: auto; padding: 9px; border-radius: 8px; background: #081824; color: #9fc1ce; font: 9px/1.5 var(--mono); }
.log-entry + .log-entry { margin-top: 4px; }.log-entry.alert { color: #f2c260; }
.demo-disclaimer { color: #8eaab6; font-size: 9px; margin-top: 13px; }
.demo-toast { position: absolute; z-index: 30; left: 50%; top: 18px; transform: translate(-50%, -150%); background: #071725; color: white; border: 1px solid var(--brass); border-radius: 9px; padding: 10px 13px; box-shadow: var(--shadow); font-size: 11px; font-weight: 800; transition: transform .22s; max-width: calc(100% - 30px); text-align: center; }
.demo-toast.show { transform: translate(-50%, 0); }

@media (max-width: 880px) {
  .demo-shell { grid-template-columns: 1fr; }
  .demo-map { min-height: 520px; }
  .demo-panel { border-left: 0; border-top: 1px solid var(--line); }
}
@media (max-width: 540px) {
  .demo-warning { font-size: 9px; }
  .demo-top { min-height: 58px; }.demo-top .brand-copy { display: none; }
  .demo-map { min-height: 430px; }
  .control-row { grid-template-columns: 1fr 1fr; }
  .place-marker .label { display: none; }
  .map-note { max-width: 190px; }
}

/* NZ / US chart switch */
.demo-map.region-us { background-image: url("helm-demo-chart-us.jpg"); }
.region-switch { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; margin-top: 14px; }
.region-switch button { min-height: 46px; border: 1px solid var(--line); border-radius: 8px; background: #293d4a; color: white; cursor: pointer; font-size: 12px; font-weight: 800; line-height: 1.2; }
.region-switch button small { display: block; font-size: 9px; font-weight: 600; opacity: .8; margin-top: 2px; }
.region-switch button.active { background: var(--teal); color: #071725; border-color: transparent; }
.region-switch button:hover { border-color: var(--teal); }

/* Keep the chart at its true shape so the boat, route and places line up with the chart picture */
.demo-map, .demo-map.region-us { min-height: 0; height: auto; aspect-ratio: 1603 / 886; align-self: start; background-size: 100% 100%; position: sticky; top: 0; }
.route-line polyline { vector-effect: non-scaling-stroke; stroke-width: 3; }
@media (max-width: 880px) { .demo-map, .demo-map.region-us { min-height: 0; position: relative; } }
@media (max-width: 540px) { .demo-map, .demo-map.region-us { min-height: 0; } .demo-map::before { font-size: 8px; left: 8px; top: 8px; } .map-note { display: none; } .scale { display: none; } }
.anchor-zone { width: 11%; height: auto; aspect-ratio: 1; }
.anchor-zone .anchor-pin { font-size: clamp(12px, 2.2vw, 26px); }
.demo-toast { opacity: 0; visibility: hidden; transition: transform .25s, opacity .25s, visibility .25s; }
.demo-toast.show { opacity: 1; visibility: visible; }