:root{--ink:#eff6ee;--muted:#aac8c6;--glass:rgba(8,34,39,.81);--edge:rgba(191,232,225,.2);--gold:#f2ca88;--aqua:#7dd9d2;--alert:#ffad7d}
*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;background:#0d292b;color:var(--ink);font-family:Segoe UI,Arial,sans-serif}button,input{font:inherit}button{cursor:pointer}#game{position:relative;width:100vw;height:100vh;min-height:590px;overflow:hidden}#lake{position:absolute;inset:0;width:100%;height:100%;display:block;background:#1a514f}.topbar{position:absolute;z-index:5;top:0;left:0;right:0;height:80px;padding:16px 22px;display:flex;align-items:center;justify-content:space-between;background:linear-gradient(180deg,rgba(4,23,29,.93),rgba(4,23,29,.54) 80%,transparent);gap:18px}.brand{display:flex;align-items:center;gap:10px;white-space:nowrap}.brand-mark{display:grid;place-items:center;width:45px;height:45px;border:2px solid var(--gold);border-radius:50%;font-size:14px;font-weight:900;letter-spacing:-1px;color:var(--gold)}.brand strong{display:block;font-size:14px;letter-spacing:.13em}.brand small{display:block;margin-top:4px;color:var(--aqua);letter-spacing:.2em;font-size:9px;font-weight:800}.top-actions{display:flex;align-items:center;gap:10px}.lake-name{font-size:12px;font-weight:700;color:var(--muted);margin-right:6px}.top-actions button,.banner button{padding:10px 14px;color:var(--ink);background:rgba(255,255,255,.09);border:1px solid var(--edge);border-radius:9px;font-size:12px;font-weight:800}.top-actions button:hover,.banner button:hover{border-color:var(--aqua);background:rgba(125,217,210,.16)}.panel{position:absolute;z-index:4;border:1px solid var(--edge);border-radius:16px;background:var(--glass);box-shadow:0 18px 45px rgba(2,15,16,.22);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}.panel-title{font-size:10px;font-weight:850;letter-spacing:.15em;color:var(--aqua);display:flex;align-items:center;justify-content:space-between}.panel-title span{letter-spacing:.1em}.signal-dot{width:7px;height:7px;border-radius:50%;background:#9be1bd;box-shadow:0 0 12px #9be1bd;margin-right:7px}.telemetry{left:20px;top:95px;width:258px;padding:17px}.speed{display:flex;align-items:end;gap:10px;margin:15px 0 13px}.speed strong{font-size:60px;line-height:.9;font-weight:700;letter-spacing:-.07em}.speed span{color:var(--gold);font-size:13px;font-weight:800;line-height:1.05;margin-bottom:5px}.speed span small{font-size:8px;color:var(--muted);letter-spacing:.13em}.instrument-grid{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--edge);border-bottom:1px solid var(--edge)}.instrument-grid div{padding:12px 4px 10px 0;min-height:58px}.instrument-grid div:nth-child(odd){border-right:1px solid var(--edge)}.instrument-grid div:nth-child(even){padding-left:12px}.instrument-grid div:nth-child(-n+2){border-bottom:1px solid var(--edge)}.instrument-grid small,.course-row small{display:block;font-size:9px;font-weight:750;letter-spacing:.1em;color:var(--muted)}.instrument-grid strong{display:block;margin-top:5px;font-size:14px}.wind-row{display:flex;gap:13px;align-items:center;padding:14px 1px}.wind-icon{display:grid;place-items:center;width:33px;height:33px;border-radius:50%;border:1px solid rgba(242,202,136,.5);color:var(--gold);font-size:15px;transition:transform .25s}.wind-row strong{display:block;font-size:13px}.wind-row small{display:block;margin-top:3px;font-size:10px;color:var(--muted)}.meter{display:grid;grid-template-columns:1fr 39px;gap:6px;align-items:center}.meter span{grid-column:1/-1;color:var(--muted);font-weight:750;font-size:9px;letter-spacing:.11em}.track{height:6px;background:rgba(255,255,255,.12);border-radius:4px;overflow:hidden}.track i{display:block;height:100%;width:0;background:var(--aqua);border-radius:4px;transition:width .2s,background .2s}.meter b{font-size:9px;color:var(--aqua);text-align:right}.course{right:20px;top:95px;width:274px;padding:17px}.course canvas{display:block;width:100%;height:104px;margin:13px 0 10px;border-radius:8px;background:#183e40}.course-row{display:flex;align-items:center;gap:9px;padding:10px 0;border-top:1px solid var(--edge);border-bottom:1px solid var(--edge)}.mark-dot{width:13px;height:13px;flex:none;border-radius:50%;background:#f99a56;box-shadow:0 0 0 4px rgba(249,154,86,.2)}.course-row strong{font-size:12px}.course-row b{margin-left:auto;color:var(--gold);font-size:12px}.course-footer{display:flex;justify-content:space-between;gap:8px;font-size:9px;font-weight:800;letter-spacing:.08em;padding-top:12px}.course-footer span:last-child{color:var(--gold)}.course p{font-size:10px;color:var(--muted);line-height:1.35;margin:8px 0 0}.controls{right:20px;bottom:58px;width:274px;padding:17px}.controls .panel-title{margin-bottom:13px}.controls .panel-title span{color:#9be1bd}.control-row{display:flex;justify-content:space-between;align-items:center;gap:8px}.control-row label{font-size:12px;font-weight:700}.control-row label small{display:block;margin-top:3px;color:var(--muted);font-size:9px;font-weight:500}.control-row output{color:var(--gold);font-weight:800;font-size:11px}.crew-row{margin-top:12px}input[type=range]{appearance:none;-webkit-appearance:none;width:100%;height:20px;margin:5px 0 0;background:none}input[type=range]::-webkit-slider-runnable-track{height:5px;background:linear-gradient(90deg,#468f8f,#b1dad3);border-radius:5px}input[type=range]::-moz-range-track{height:5px;background:linear-gradient(90deg,#468f8f,#b1dad3);border-radius:5px}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;margin-top:-5px;background:var(--gold);border:3px solid #173b3d;border-radius:50%;box-shadow:0 1px 5px #071d20}input[type=range]::-moz-range-thumb{width:12px;height:12px;background:var(--gold);border:3px solid #173b3d;border-radius:50%}.range-ends{display:flex;justify-content:space-between;color:var(--muted);font-size:8px;font-weight:800;letter-spacing:.1em}.toggle-row,.helm-row{display:flex;gap:7px;margin-top:16px}.toggle-row button{width:50%;height:43px;border:1px solid var(--edge);border-radius:9px;background:rgba(125,217,210,.1);color:var(--ink);font-size:10px;font-weight:700;text-align:left;padding:6px 8px}.toggle-row b{display:block;color:var(--gold);font-size:10px}.toggle-row small{float:right;color:var(--muted)}.helm-row{align-items:center}.helm-row button{flex:1;height:38px;border:1px solid rgba(242,202,136,.44);border-radius:8px;background:rgba(242,202,136,.11);color:var(--gold);font-size:10px;font-weight:850;touch-action:none}.helm-row button:active,.helm-row button.held{background:rgba(242,202,136,.33)}.helm-row span{text-align:center;font-size:8px;font-weight:850;letter-spacing:.12em;color:var(--muted)}.helm-row small{font-size:9px;letter-spacing:0}.bottom-strip{position:absolute;z-index:3;left:0;right:0;bottom:0;min-height:42px;padding:12px 22px;display:flex;justify-content:space-between;gap:12px;background:rgba(5,26,29,.88);color:var(--muted);font-size:11px}.banner{position:absolute;z-index:10;top:50%;left:50%;transform:translate(-50%,-50%);width:min(420px,calc(100vw - 30px));text-align:center;padding:28px;border:1px solid rgba(255,173,125,.6);border-radius:18px;background:rgba(7,28,33,.95);box-shadow:0 20px 70px #071619}.banner strong{display:block;font-size:30px;color:var(--alert);letter-spacing:.08em}.banner span{display:block;margin:11px 0 20px;color:var(--ink);font-size:13px;line-height:1.5}.toast{position:absolute;z-index:8;bottom:60px;left:50%;transform:translateX(-50%) translateY(12px);opacity:0;pointer-events:none;background:#f0ddae;color:#143333;border-radius:30px;padding:9px 17px;font-size:12px;font-weight:800;transition:opacity .3s,transform .3s;white-space:nowrap}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media(max-width:900px){.course{display:none}.lake-name{display:none}.telemetry{width:230px}.controls{width:244px}.topbar{padding:13px}.brand strong{font-size:12px}.bottom-strip span:last-child{display:none}}
@media(max-width:640px){#game{min-height:540px}.topbar{height:64px}.brand-mark{width:36px;height:36px;font-size:11px}.brand strong{font-size:10px}.brand small{font-size:7px}.top-actions button{padding:8px;font-size:10px}.top-actions{gap:5px}.telemetry{top:73px;left:8px;width:184px;padding:11px}.speed{margin:10px 0}.speed strong{font-size:44px}.instrument-grid div{min-height:50px;padding-top:8px}.instrument-grid strong{font-size:11px}.instrument-grid small{font-size:7px}.wind-row{padding:9px 1px}.meter{display:none}.controls{right:8px;bottom:47px;width:204px;padding:11px}.controls .panel-title{margin-bottom:8px}.control-row label{font-size:10px}.toggle-row{margin-top:9px}.toggle-row button{height:39px;font-size:9px}.helm-row{margin-top:9px}.helm-row button{font-size:9px}.bottom-strip{padding:9px 11px;min-height:35px;font-size:9px}.toast{bottom:48px;font-size:10px}}
.toggle-row button{width:auto;flex:1;min-width:0;padding:6px 6px;font-size:9px}
@media(max-width:640px){.toggle-row{gap:4px}.toggle-row button{font-size:8px;padding:5px 4px}.toggle-row b{font-size:9px}}
@media(max-height:750px){.course{top:86px;padding:12px}.course canvas{height:82px;margin:8px 0 6px}.course-row{padding:6px 0}.course-footer{padding-top:7px}.course p{font-size:9px;margin:5px 0 0}}
@media(max-height:630px){.course{display:none}}
.map-warning{display:inline-flex;align-items:center;min-height:28px;padding:0 8px;border:1px solid rgba(242,202,136,.48);border-radius:5px;color:var(--gold);background:rgba(242,202,136,.09);font-size:8px;font-weight:900;letter-spacing:.1em;white-space:nowrap}
@media(max-width:900px){.map-warning{font-size:7px}}
@media(max-width:640px){.map-warning{padding:0 4px;min-height:24px;max-width:72px;white-space:normal;line-height:1.1;text-align:center}}
#lake{cursor:grab;touch-action:none}#lake.dragging{cursor:ew-resize}.mouse-hint{margin:12px 0 -8px;color:var(--aqua);font-size:8px;font-weight:850;letter-spacing:.09em;text-align:center}
.distance-sailed{margin:-6px 0 10px;color:var(--aqua);font-size:10px;font-weight:800;letter-spacing:.08em}
#viewToggle{border-color:rgba(125,217,210,.44);color:var(--aqua)}
#viewToggle[aria-pressed="true"]{background:rgba(125,217,210,.2)}
.wind-icon{position:relative;width:42px;height:42px;flex:none;background:rgba(242,202,136,.07);transition:none}
.wind-bow{position:absolute;top:-7px;left:50%;transform:translateX(-50%);color:var(--aqua);font-size:10px;line-height:1}
.wind-needle{display:block;font-size:21px;line-height:1;transform:rotate(-90deg);transition:transform .18s ease}
.wind-row>span:last-child{min-width:0}
#trueWind{color:var(--gold);font-size:9px}
@media(max-width:640px){.mouse-hint{font-size:7px;margin:8px 0 -5px}}
/* The thumbnail opens a three-times-larger, sharp lake map. */
.map-open{position:relative;display:block;width:100%;padding:0;margin:13px 0 10px;border:1px solid rgba(208,199,147,.55);border-radius:8px;background:#183e40;color:var(--ink);text-align:left;overflow:hidden}
.course .map-open canvas{display:block;width:100%;height:104px;margin:0;border-radius:0}
.map-open:hover,.map-open:focus-visible{border-color:var(--gold);outline:2px solid rgba(242,202,136,.55);outline-offset:2px}
.map-open-label{position:absolute;right:5px;bottom:5px;padding:3px 5px;border-radius:4px;background:rgba(5,30,35,.82);color:#fff1bf;font-size:8px;font-weight:850;letter-spacing:.04em}
.map-fab{display:none;position:absolute;z-index:6;left:20px;bottom:58px;padding:10px 15px;border:1px solid var(--gold);border-radius:9px;background:rgba(9,39,43,.92);color:var(--gold);font-size:12px;font-weight:850}
.map-dialog{width:min(768px,calc(100vw - 24px));max-height:calc(100vh - 24px);padding:18px;border:1px solid rgba(242,202,136,.55);border-radius:16px;background:#14363b;color:var(--ink);box-shadow:0 24px 80px rgba(1,13,17,.65);overflow:auto}
.map-dialog::backdrop{background:rgba(3,18,23,.76)}
.map-dialog-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:13px}
.map-dialog-head small{color:var(--aqua);font-size:10px;font-weight:850;letter-spacing:.16em}
.map-dialog-head h2{margin:4px 0 0;color:var(--ink);font-size:19px}
.map-dialog-head button{flex:none;padding:8px 12px;border:1px solid var(--edge);border-radius:8px;background:rgba(255,255,255,.09);color:var(--ink);font-size:12px;font-weight:800}
.map-dialog-head button:hover,.map-dialog-head button:focus-visible{border-color:var(--gold)}
.map-dialog canvas{display:block;width:100%;height:auto;border:1px solid rgba(208,199,147,.55);border-radius:10px;background:#214943}
.map-position-text{margin:12px 0 4px;color:#fff1bf;font-size:13px;font-weight:750}
.map-pause-note{margin:0;color:var(--muted);font-size:11px}
@media(max-height:750px){.map-open{margin:8px 0 6px}.course .map-open canvas{height:82px}}
@media(max-width:900px),(max-height:630px){.map-fab{display:block}}
@media(max-width:640px){.map-dialog{padding:11px}.map-dialog-head h2{font-size:15px}.map-fab{left:8px;bottom:47px;padding:8px 11px}}
@media(max-width:420px){.topbar{height:54px;padding:6px}.brand{gap:4px}.brand-mark{display:none}.brand strong{font-size:9px}.brand small{display:none}.top-actions{gap:3px}.top-actions button{padding:6px 5px;font-size:9px}.map-warning{font-size:6px;max-width:66px;min-height:22px}.telemetry{top:59px;left:6px;right:6px;width:auto;height:74px;display:flex;align-items:center;justify-content:space-around;padding:7px 10px}.telemetry .panel-title,.telemetry .instrument-grid,.telemetry .meter{display:none}.speed{margin:0}.speed strong{font-size:35px}.speed span{font-size:10px}.speed span small{font-size:7px}.wind-row{padding:0}.wind-row strong{font-size:10px}.wind-row small{font-size:8px}.wind-icon{width:26px;height:26px;font-size:12px}.controls{left:6px;right:6px;width:auto;bottom:39px;padding:10px}.controls .panel-title{margin-bottom:4px}.control-row label{font-size:10px}.control-row label small{font-size:8px}.toggle-row button{height:37px}.helm-row button{height:34px}.bottom-strip{padding:8px;font-size:8px;min-height:33px}.bottom-strip span:last-child{display:none}}
@media(max-width:420px){.wind-icon{width:29px;height:29px}.wind-bow{font-size:8px;top:-5px}.wind-needle{font-size:16px}#trueWind{display:none}}
@media(max-width:420px){.map-fab{top:140px;bottom:auto;left:6px}}