:root{--bg: #0d1117;--panel: #161b22;--border: rgba(255, 255, 255, .1);--text: #e6edf3;--muted: #8b949e;--accent: #4ea1ff;--error: #ff6b6b;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}.app{max-width:1100px;margin:0 auto;padding:24px 20px 48px}.app-header h1{margin:0;font-size:1.6rem;letter-spacing:-.01em}.tagline{margin:4px 0 0;color:var(--muted);font-size:.95rem}.search{display:flex;gap:10px;margin:24px 0 8px}.search-input{flex:1;min-width:0;padding:12px 14px;font-size:1rem;color:var(--text);background:var(--panel);border:1px solid var(--border);border-radius:10px;text-transform:uppercase}.search-input::placeholder{color:var(--muted);text-transform:none}.search-input:focus{outline:2px solid var(--accent);outline-offset:1px}.search-button{padding:12px 22px;font-size:1rem;font-weight:600;color:#06121f;background:var(--accent);border:none;border-radius:10px;cursor:pointer}.search-button:hover{filter:brightness(1.08)}.search-button:focus-visible{outline:2px solid #fff;outline-offset:2px}.chart-header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:24px}.chart-title{display:flex;align-items:baseline;gap:10px}.chart-title h2{margin:0;font-size:1.5rem}.source{color:var(--muted);font-size:.85rem}.range-controls{display:inline-flex;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:3px;gap:2px}.range-button{padding:7px 16px;font-size:.9rem;font-weight:600;color:var(--muted);background:transparent;border:none;border-radius:7px;cursor:pointer}.range-button:hover{color:var(--text)}.range-button.active{color:#06121f;background:var(--accent)}.range-button:focus-visible{outline:2px solid #fff;outline-offset:1px}.legend{display:flex;flex-wrap:wrap;gap:16px;list-style:none;padding:0;margin:14px 0 6px;font-size:.85rem;color:var(--muted)}.legend-item{display:inline-flex;align-items:center;gap:7px}.swatch{width:14px;height:4px;border-radius:2px;display:inline-block}.content{margin-top:12px}.chart-wrap{position:relative;width:100%;height:540px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:8px}.chart-canvas{width:100%;height:100%}.chart-tooltip{display:none;position:absolute;z-index:5;pointer-events:none;min-width:170px;padding:10px 12px;background:#161b22f5;border:1px solid var(--border);border-radius:8px;box-shadow:0 6px 18px #0006;font-size:.85rem}.tt-date{font-weight:700;margin-bottom:6px}.tt-row{display:flex;justify-content:space-between;gap:18px}.tt-label{color:var(--muted)}.tt-value{font-variant-numeric:tabular-nums;font-weight:600}.placeholder{display:flex;align-items:center;justify-content:center;gap:10px;min-height:320px;padding:24px;text-align:center;color:var(--muted);background:var(--panel);border:1px dashed var(--border);border-radius:12px}.placeholder.error{color:var(--error);border-color:#ff6b6b66}.spinner{width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.app-footer{margin-top:28px;color:var(--muted);font-size:.8rem}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);border:0}@media(max-width:640px){.chart-wrap{height:440px}.chart-header{align-items:flex-start}}