@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap";:root{--bg:#1b2430;--surface:#232d3f;--surface-hover:#2a3548;--border:#35415a;--text:#e8edf4;--text-dim:#8d9bb3;--aqi-good:#4caf50;--aqi-moderate:#d4c43d;--aqi-sensitive:#e8862b;--aqi-unhealthy:#db4437;--aqi-very-unhealthy:#8e44ad;--aqi-default:#6b7a93}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;margin:0;font-family:Inter,system-ui,sans-serif}.mono{font-family:IBM Plex Mono,monospace}.app-shell{max-width:1200px;margin:0 auto;padding:32px 24px 64px}.app-header{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:28px;display:flex}.app-title{letter-spacing:-.01em;font-size:1.5rem;font-weight:700}.app-subtitle{color:var(--text-dim);font-size:.875rem}.connection-badge{color:var(--text-dim);align-items:center;gap:6px;font-family:IBM Plex Mono,monospace;font-size:.75rem;display:inline-flex}.dot{background:var(--aqi-default);border-radius:50%;width:8px;height:8px}.dot.connected{background:var(--aqi-good);box-shadow:0 0 6px var(--aqi-good)}.city-tabs{flex-wrap:wrap;gap:8px;margin-bottom:24px;display:flex}.city-tab{border:1px solid var(--border);background:var(--surface);color:var(--text-dim);cursor:pointer;border-radius:8px;padding:8px 16px;font-size:.875rem;font-weight:500;transition:all .15s}.city-tab:hover{background:var(--surface-hover);color:var(--text)}.city-tab.active{background:var(--text);color:var(--bg);border-color:var(--text)}.grid{grid-template-columns:1.3fr 1fr;gap:20px;display:grid}@media (width<=860px){.grid{grid-template-columns:1fr}}.panel{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:20px}.panel-title{text-transform:uppercase;letter-spacing:.04em;color:var(--text-dim);margin-bottom:16px;font-size:.875rem;font-weight:600}.alert-list{flex-direction:column;gap:8px;max-height:420px;margin:0;padding:0;list-style:none;display:flex;overflow-y:auto}.alert-row{background:var(--bg);border-left:3px solid var(--aqi-default);border-radius:8px;align-items:center;gap:12px;padding:10px 12px;display:flex}.aqi-readout{text-align:right;min-width:48px;font-family:IBM Plex Mono,monospace;font-size:1.1rem;font-weight:600}.alert-meta{flex:1;min-width:0}.alert-city{font-size:.9rem;font-weight:600}.alert-sub{color:var(--text-dim);font-size:.75rem}.category-badge{white-space:nowrap;border-radius:999px;padding:3px 8px;font-size:.7rem;font-weight:600}.empty-state{color:var(--text-dim);text-align:center;padding:32px 0;font-size:.875rem}.history-table{border-collapse:collapse;width:100%;font-size:.8rem}.history-table th{text-align:left;color:var(--text-dim);text-transform:uppercase;letter-spacing:.03em;border-bottom:1px solid var(--border);padding:8px 10px;font-size:.7rem;font-weight:600}.history-table td{border-bottom:1px solid var(--border);padding:8px 10px}.history-table tbody tr:hover{background:var(--surface-hover)}