:root{--bg: #04081c;--bg-elevated: #0b1330;--text: #e6e6ec;--text-dim: #7a86ad;--accent: #4dd0e1;--border: #1a2450}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;min-height:100vh;overscroll-behavior:none}main{max-width:780px;margin:0 auto;padding:16px;display:grid;grid-template-columns:1fr;gap:16px}.page-title h1{margin:0;font-size:20px;letter-spacing:.02em}.page-title .tagline{margin:2px 0 0;color:var(--text-dim);font-size:13px}.picker{position:relative}#airport-search{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--border);background:var(--bg-elevated);color:var(--text);font-size:15px;font-family:inherit}#airport-search:focus{outline:2px solid var(--accent);outline-offset:-1px}#airport-results{position:absolute;top:calc(100% + 4px);left:0;right:0;margin:0;padding:4px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:10px;list-style:none;max-height:240px;overflow-y:auto;z-index:10}#airport-results li{padding:8px 10px;border-radius:6px;cursor:pointer;font-size:14px}#airport-results li:hover,#airport-results li[aria-selected=true]{background:var(--border)}#airport-results li .icao{color:var(--accent);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;margin-right:8px}.stage{display:flex;justify-content:center;align-items:center;padding:4px 0}#radar{width:min(480px,calc(100vw - 32px));height:min(480px,calc(100vw - 32px));image-rendering:pixelated;border-radius:50%;touch-action:manipulation;background:transparent}.controls{display:grid;gap:10px}.hints{display:flex;gap:10px;justify-content:center;color:var(--text-dim);font-size:13px}button.hint{background:transparent;border:none;padding:4px;color:var(--text-dim);font-size:13px;font-family:inherit;cursor:pointer;border-radius:6px}button.hint:hover,button.hint:focus-visible{color:var(--text);background:var(--bg-elevated);outline:none}.hint kbd{background:var(--bg-elevated);border:1px solid var(--border);border-radius:4px;padding:1px 6px;color:var(--text);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;margin-right:4px}button.hint:hover kbd,button.hint:focus-visible kbd{background:var(--border)}.layers{display:flex;flex-wrap:wrap;gap:6px;justify-content:center}.layers button{background:var(--bg-elevated);border:1px solid var(--border);color:var(--text);padding:6px 10px;border-radius:999px;font-size:12px;cursor:pointer;font-family:inherit}.layers button[aria-pressed=true]{background:var(--accent);color:var(--bg);border-color:var(--accent)}.page-footer{color:var(--text-dim);font-size:12px;text-align:center;padding-bottom:20px}.page-footer a{color:var(--accent);text-decoration:none}.page-footer a:hover{text-decoration:underline}@media (min-width: 720px){main{grid-template-columns:1fr auto;grid-template-areas:"title title" "stage controls" "stage picker" "footer footer"}.page-title{grid-area:title}.stage{grid-area:stage}.controls{grid-area:controls;align-self:end;justify-items:start}.picker{grid-area:picker;align-self:start;min-width:280px}.hints{flex-direction:column;align-items:flex-start;gap:4px}.layers{justify-content:flex-start}.page-footer{grid-area:footer}}