:root,:root[data-theme=dark]{--bg: #10131a;--panel-bg: rgba(20, 24, 33, .92);--panel-border: rgba(255, 255, 255, .1);--fg: #f0f3f8;--fg-dim: #b6bfce;--accent: #58a6ff;--error: #ff9a9a;--code-bg: rgba(255, 255, 255, .12);--inset-bg: rgba(255, 255, 255, .06);--inset-hover-bg: rgba(30, 36, 48, .9)}:root[data-theme=light]{--bg: #eef1f6;--panel-bg: rgba(255, 255, 255, .92);--panel-border: rgba(0, 0, 0, .14);--fg: #1b1f27;--fg-dim: #515a68;--accent: #1f6feb;--error: #c0341d;--code-bg: rgba(0, 0, 0, .08);--inset-bg: rgba(0, 0, 0, .05);--inset-hover-bg: rgba(0, 0, 0, .08)}:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;background:var(--bg);color:var(--fg)}#app{position:fixed;inset:0;user-select:none;-webkit-user-select:none}#viewport{position:absolute;inset:0}#viewport canvas{display:block}#panel{position:absolute;top:16px;left:16px;max-width:320px;z-index:10}.hud{background:var(--panel-bg);border:1px solid var(--panel-border);border-radius:10px;padding:14px 16px;backdrop-filter:blur(8px);box-shadow:0 8px 30px #00000059}.hud-title{font-size:15px;font-weight:600;margin:0 0 10px;letter-spacing:.02em}.hud-hint{font-size:13px;color:var(--fg-dim);margin:0;line-height:1.5}.hud-hint code,.drop-message code{background:var(--code-bg);padding:1px 5px;border-radius:4px;font-size:.9em}.hud-error{font-size:13px;color:var(--error);margin:0;line-height:1.5}.hud-stats{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;margin:0;font-size:13px}.hud-stats dt{color:var(--fg-dim)}.hud-stats dd{margin:0;text-align:right;font-variant-numeric:tabular-nums;word-break:break-word}.hud-privacy{font-size:11px;color:var(--fg-dim);margin:12px 0 0;line-height:1.45;border-top:1px solid var(--panel-border);padding-top:10px}.hud-repo{display:inline-block;margin-top:8px;font-size:11px;color:var(--accent);text-decoration:none}.hud-repo:hover{text-decoration:underline}.station-info{margin-top:10px}.station-info-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px}.station-info-name{font-size:13px;font-weight:600;word-break:break-word}.station-info-close{flex:none;background:var(--inset-bg);border:1px solid var(--panel-border);color:var(--fg);border-radius:6px;width:22px;height:22px;line-height:1;font-size:15px;cursor:pointer}.station-info-close:hover{border-color:var(--accent)}.station-info-flags{margin:8px 0 0;font-size:11px;color:var(--fg-dim)}#toolbar{position:absolute;bottom:18px;left:50%;transform:translate(-50%);display:flex;gap:8px;z-index:10}#toolbar button{background:var(--panel-bg);border:1px solid var(--panel-border);color:var(--fg);font-size:13px;padding:8px 14px;border-radius:8px;cursor:pointer;backdrop-filter:blur(8px);transition:border-color .15s,background .15s}#toolbar button:hover{border-color:var(--accent);background:var(--inset-hover-bg)}#toolbar button:disabled{opacity:.4;cursor:default;border-color:var(--panel-border);background:var(--panel-bg)}#toolbar button.active{border-color:var(--accent);color:var(--accent);background:var(--inset-hover-bg)}.measure-ends{margin:0 0 8px;font-size:12px;color:var(--fg-dim);word-break:break-word}#controls-host{position:absolute;top:84px;right:18px;z-index:10;display:flex;flex-direction:column;align-items:flex-end;gap:10px;max-height:calc(100vh - 164px);overflow-y:auto;pointer-events:none}#controls-host>*{pointer-events:auto}.controls{background:var(--panel-bg);border:1px solid var(--panel-border);border-radius:10px;padding:10px 12px;backdrop-filter:blur(8px);display:flex;flex-direction:column;gap:8px;font-size:12px;min-width:190px}.controls-row{display:flex;align-items:center;gap:6px}.controls button{background:var(--inset-bg);border:1px solid var(--panel-border);color:var(--fg);font-size:12px;padding:5px 9px;border-radius:6px;cursor:pointer}.controls button:hover{border-color:var(--accent)}.controls button:disabled{opacity:.45;cursor:default;border-color:var(--panel-border)}.controls-views{display:grid;grid-template-columns:repeat(2,1fr);gap:4px}.controls-views button{padding:5px 0;text-align:center}.controls-row>button{width:100%}.controls-select{flex-direction:column;align-items:stretch;gap:4px;color:var(--fg-dim)}.controls-select select{background:var(--inset-bg);border:1px solid var(--panel-border);color:var(--fg);border-radius:6px;padding:5px 6px;font-size:12px}.controls-show{flex-wrap:wrap;gap:4px 10px;color:var(--fg-dim)}.controls-show label{display:inline-flex;align-items:center;gap:3px;color:var(--fg);cursor:pointer}.controls-show-title{width:100%;color:var(--fg-dim)}.survey-tree{gap:4px;max-height:240px;overflow-y:auto}.survey-tree-body,.survey-tree-children{display:flex;flex-direction:column}.survey-tree-body{font-size:12px}.survey-tree-children{margin-left:14px;border-left:1px solid var(--panel-border);padding-left:6px}.survey-tree details>summary{list-style:revert;cursor:pointer}.survey-tree-row{display:inline-flex;align-items:center;gap:4px;cursor:pointer}.scalebar{position:absolute;bottom:18px;left:16px;z-index:10;background:var(--panel-bg);border:1px solid var(--panel-border);border-radius:8px;padding:6px 10px;backdrop-filter:blur(8px);display:flex;flex-direction:column;align-items:center;gap:4px}.scalebar-bar{height:4px;background:var(--fg);border-radius:2px;min-width:20px}.scalebar-label{font-size:11px;color:var(--fg-dim);font-variant-numeric:tabular-nums}.legend-note{font-size:12px;color:var(--fg);max-width:120px;text-align:center}.legend{background:var(--panel-bg);border:1px solid var(--panel-border);border-radius:10px;padding:10px 12px;backdrop-filter:blur(8px)}.legend-title{font-size:11px;color:var(--fg-dim);text-align:center;margin-bottom:8px;text-transform:uppercase;letter-spacing:.05em}.legend-body{display:flex;gap:8px;height:180px}.legend-bar{width:14px;border-radius:4px;border:1px solid var(--panel-border)}.legend-labels{display:flex;flex-direction:column;justify-content:space-between;font-size:11px;color:var(--fg-dim);font-variant-numeric:tabular-nums}.search{padding:8px 10px}.search-input{width:100%;background:var(--inset-bg);border:1px solid var(--panel-border);color:var(--fg);border-radius:6px;padding:6px 8px;font-size:12px}.search-input::placeholder{color:var(--fg-dim)}.search-input:focus{outline:none;border-color:var(--accent)}.station-tooltip{position:absolute;z-index:30;pointer-events:none;background:var(--panel-bg);border:1px solid var(--panel-border);color:var(--fg);border-radius:6px;padding:3px 7px;font-size:12px;backdrop-filter:blur(8px);max-width:320px;white-space:normal;overflow-wrap:anywhere}.viewcube{position:absolute;bottom:18px;right:18px;width:96px;height:96px;z-index:10;filter:drop-shadow(0 4px 12px rgba(0,0,0,.35))}.north-indicator{position:absolute;top:16px;right:18px;width:56px;height:56px;border-radius:50%;background:var(--panel-bg);border:1px solid var(--panel-border);backdrop-filter:blur(8px);z-index:10;display:grid;place-items:center}.north-needle{position:relative;width:100%;height:100%;display:grid;place-items:center}.north-arrow{position:absolute;top:6px;width:0;height:0;border-left:6px solid transparent;border-right:6px solid transparent;border-bottom:14px solid #ff5a5a}.north-n{position:absolute;top:20px;font-size:12px;font-weight:700;color:var(--fg)}#drop-overlay{position:absolute;inset:0;z-index:50;display:none;place-items:center;background:#10131ac7;border:3px dashed var(--accent);backdrop-filter:blur(2px)}#drop-overlay.active{display:grid}.drop-message{font-size:22px;color:var(--fg);padding:28px 40px;border-radius:14px}.mobile-only{display:none}@media (max-width: 640px){#viewport canvas{touch-action:none}.mobile-only{display:inline-block}#toolbar{left:0;right:0;bottom:0;transform:none;gap:6px;padding:8px 10px calc(8px + env(safe-area-inset-bottom));background:var(--panel-bg);border-top:1px solid var(--panel-border);backdrop-filter:blur(8px);flex-wrap:nowrap;justify-content:flex-start;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}#toolbar::-webkit-scrollbar{display:none}#toolbar button{flex:0 0 auto;white-space:nowrap;min-height:40px;backdrop-filter:none}#panel{top:8px;left:8px;max-width:min(320px,86vw);max-height:calc(100vh - 130px);overflow-y:auto;-webkit-overflow-scrolling:touch;transform:translate(calc(-100% - 16px));transition:transform .2s ease}#panel.open{transform:none}#controls-host{inset:8px 8px auto auto;max-height:calc(100vh - 130px);transform:translate(calc(100% + 16px));transition:transform .2s ease}#controls-host.open{transform:none}.controls,.search,.survey-tree,.legend{width:min(300px,84vw)}.legend-body{height:130px}.scalebar{bottom:70px;left:8px}.viewcube{bottom:70px;right:8px}.north-indicator{top:8px;right:8px;width:44px;height:44px}}