*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg: #131722;--surface: #1e222d;--border: #2a2e39;--text: #d1d4dc;--text-muted: #787b86;--accent: #2962ff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:var(--bg);color:var(--text)}html,body,#app{height:100%}#app{display:flex;flex-direction:column}header{display:flex;align-items:center;gap:1rem;padding:.75rem 1.25rem;border-bottom:1px solid var(--border);background:var(--surface)}header h1{font-size:1.1rem;font-weight:600;color:var(--text);letter-spacing:.02em}select{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:4px;padding:.4rem 2rem .4rem .75rem;font-size:.9rem;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23787b86' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .5rem center}select:focus{outline:none;border-color:var(--accent)}main{flex:1;min-height:0}#chart{width:100%;height:100%}