:root{--bg: #ffffff;--ink: #111827;--muted: #6b7280;--card: #fbfbfc;--border: rgba(15, 23, 42, .12);--shadow: 0 18px 50px rgba(2, 6, 23, .08);--scale-fill: #e0f2fe;--scale-ink: #075985;--chord-ring: #a78bfa;--pressed-glow: #fb7185}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}body{padding:18px 14px 56px;background:radial-gradient(1200px 700px at 10% -10%,rgba(167,139,250,.18),transparent 55%),radial-gradient(900px 600px at 100% 0%,rgba(14,165,233,.14),transparent 56%),radial-gradient(900px 600px at 50% 120%,rgba(251,113,133,.12),transparent 55%),var(--bg)}.topbar{max-width:min(1320px,calc(100vw - 28px));margin:0 auto 12px;display:flex;align-items:center;justify-content:space-between;gap:10px}.topbar h1{font-size:16px;margin:0;font-weight:700;letter-spacing:.02em}.topbar-actions{display:flex;align-items:center;gap:10px}.icon-btn{display:inline-flex;align-items:center;gap:8px}.material-symbols-rounded{font-variation-settings:"FILL" 0,"wght" 600,"GRAD" 0,"opsz" 20;font-size:18px;line-height:1}@media(max-width:640px){.topbar{flex-direction:column;align-items:flex-start}.topbar-actions{width:100%;flex-wrap:wrap}}.topbar-summary-toggle{padding:10px 12px;background:#ffffffd1;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow)}.topbar-chord-guess{font-size:11px;color:var(--muted);line-height:1.2;display:none;max-width:min(1320px,calc(100vw - 28px))}.topbar-chord-guess strong{color:var(--ink);font-weight:700}.btn{border:1px solid var(--border);background:#ffffffd1;color:var(--ink);border-radius:12px;padding:8px 10px;font-size:13px;cursor:pointer;backdrop-filter:blur(10px)}.btn:hover{background:#fffffff5}.toggle{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);background:#ffffffd1;border-radius:12px;padding:8px 10px;font-size:13px;cursor:pointer;user-select:none;backdrop-filter:blur(10px)}.toggle input{margin:0}.grid{max-width:min(1320px,calc(100vw - 28px));margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:12px}.grid.grid--one-col{grid-template-columns:1fr}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:12px;box-shadow:var(--shadow);position:relative}.card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}.remove-btn{position:absolute;top:10px;right:10px;width:34px;height:34px;border-radius:999px;border:1px solid rgba(239,68,68,.55);background:#ef444424;color:#b91c1cf2;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;backdrop-filter:blur(10px)}.remove-btn:hover{background:#ef444438;border-color:#ef4444cc}.controls{display:flex;flex-wrap:wrap;gap:6px 10px;min-width:0;width:100%}.control-row{display:flex;align-items:center;padding:4px 8px;max-width:100%}.control-label{font-size:12px;color:#000;margin-right:5px;white-space:nowrap;flex:0 0 auto}.control-field{display:flex;justify-content:flex-end;color:#000;align-items:center;flex:1 1 auto;min-width:0}.control-field>*{max-width:100%}.segmented{display:inline-flex;border:1px solid var(--border);background:#ffffffd1;border-radius:999px;padding:2px;gap:2px}.seg-btn{border:0;background:transparent;color:var(--muted);border-radius:999px;padding:6px;font-size:12px;cursor:pointer;line-height:1}.seg-btn:hover{background:#0f172a0d;color:var(--ink)}.seg-btn.is-active{background:#0ea5e929;color:#075985}label{font-size:12px;color:var(--muted)}select{border:1px solid var(--border);background:#ffffffe0;border-radius:12px;padding:6px 8px;font-size:13px;color:var(--ink)}.degrees-row{display:flex;align-items:center;flex-wrap:wrap;gap:8px 12px;margin:10px 0 12px}.degrees{display:flex;flex-wrap:wrap;gap:8px;margin:0}.chord-readout{font-size:10px;color:var(--muted);display:none;letter-spacing:.01em;margin-left:6px}.chord-readout strong{color:var(--ink);font-weight:700}.deg-btn{border:1px solid rgba(148,163,184,.4);background:#f8fafce6;border-radius:10px;padding:7px 12px;font-size:13px;cursor:pointer;line-height:1.1;letter-spacing:.04em;color:#475569e6;box-shadow:0 1px 2px #0f172a0f;transition:background .14s ease-out,box-shadow .14s ease-out,transform .12s ease-out,color .12s ease-out,border-color .14s ease-out}.deg-btn:hover{transform:translateY(-1px);background:#f1f5f9fa;box-shadow:0 3px 8px #0f172a1f;color:var(--ink)}.deg-btn.is-active{border-color:#818cf8e6;background:#e0e7fffa;color:#3730a3;box-shadow:0 4px 14px #818cf859}.piano-wrap{overflow-x:auto;padding-bottom:6px}.piano{position:relative;margin:0 auto;background:#ffffffd1;border:1px solid rgba(15,23,42,.18);border-radius:14px;box-shadow:inset 0 0 0 1px #ffffff80,0 14px 40px #0206171a;backdrop-filter:blur(10px)}.key{position:absolute;top:0;border:none;padding:0;margin:0;cursor:pointer;user-select:none;-webkit-tap-highlight-color:transparent}.key-dot{position:absolute;left:50%;bottom:10px;transform:translate(-50%);width:16px;height:16px;border-radius:999px;background:#f59e0b;box-shadow:0 6px 16px #f59e0b2e;opacity:0;display:grid;place-items:center;font-size:10px;line-height:1;font-weight:700;color:#fffffffa;user-select:none}.piano.hide-scale-dots .key-dot{opacity:0!important}.black-key .key-dot{bottom:8px;width:14px;height:14px;box-shadow:0 6px 16px #f59e0b24;font-size:9px}.key.in-scale .key-dot{opacity:1}.key.is-tonic .key-dot{background:#ef4444;box-shadow:0 8px 18px #ef444433;color:#fffffffa}.white-key{background:#fff;border:2px solid rgba(15,23,42,.5);border-radius:0 0 6px 6px;z-index:1;box-shadow:inset 0 -10px 18px #0f172a0f}.black-key{background:linear-gradient(180deg,#0b1220,#101b31);border-radius:0 0 5px 5px;z-index:2;box-shadow:inset 0 -10px 18px #ffffff0f,0 8px 18px #02061738}.key.in-scale.white-key{background:#fff}.key.in-scale.black-key{background:linear-gradient(180deg,#0b1220,#101b31)}.key.in-chord{box-shadow:inset 0 0 0 2px #a78bfaf2}.key.in-chord.is-chord-root{box-shadow:inset 0 0 0 2px #d946efeb}.key.in-chord:after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;background:repeating-linear-gradient(135deg,#a78bfa00 0px 6px,#a78bfa2e 6px 10px);mix-blend-mode:multiply}.key.in-chord.is-chord-root:after{background:repeating-linear-gradient(135deg,#d946ef00 0px 6px,#d946ef33 6px 10px)}.key.black-key.in-chord{background:linear-gradient(180deg,#1f2937,#020617);box-shadow:inset 0 0 0 2px #a78bfaf2,0 0 0 1px #0f172ae6,0 10px 22px #0f172a8c}.key.black-key.in-chord.is-chord-root{box-shadow:inset 0 0 0 2px #d946efeb,0 0 0 1px #0f172ae6,0 10px 22px #0f172a8c}.key.black-key.in-chord:after{background:repeating-linear-gradient(135deg,#fff0 0px 6px,#ffffff52 6px 10px);mix-blend-mode:screen;opacity:.95}.key.black-key.in-chord.is-chord-root:after{background:repeating-linear-gradient(135deg,#fff0 0px 6px,#f5d0fe94 6px 10px);mix-blend-mode:screen;opacity:.95}.key.is-pressed{transform:translateY(1px);box-shadow:inset 0 0 0 2px #fb7185f2,0 0 0 1px #a78bfa59,0 10px 26px #fb718538,0 0 32px #fb718542}.key.is-pressed:before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;background:radial-gradient(circle at 50% 50%,#fb718585,#fb718500 180%)}.key.is-pressed.in-chord:after{opacity:.1}.summary{max-width:min(1320px,calc(100vw - 28px));margin:10px auto 0;display:flex;flex-direction:column;align-items:flex-start;gap:6px}.summary-row{display:flex;align-items:center;gap:8px}.summary-title{font-size:10px;color:var(--muted);overflow-wrap:anywhere}.summary-piano{position:relative;height:84px;flex:0 0 auto;background:#ffffffd9;border:1px solid rgba(15,23,42,.18);overflow:hidden;min-width:240px;box-shadow:inset 0 0 0 1px #ffffff80}.skey{position:absolute;top:0;border:1px solid rgba(15,23,42,.5)}.swhite{background:#fff;height:84px;z-index:1}.sblack{background:#111827;height:51px;z-index:2;border-top:none}.skey.is-pressed{box-shadow:inset 0 0 0 2px #fb7185f2,0 0 0 2px #fb718538}.topbar-midi-group{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.topbar-midi-group .segmented{flex-shrink:0}.midi-settings-open{padding:8px 10px;min-width:40px;justify-content:center}.midi-settings-open .material-symbols-rounded{font-size:22px}.midi-settings-backdrop{position:fixed;inset:0;z-index:80;display:none;align-items:center;justify-content:center;padding:16px;background:#0f172a73;backdrop-filter:blur(4px)}.midi-settings-backdrop.is-open{display:flex}.midi-settings-dialog{width:min(420px,100%);max-height:min(72vh,520px);overflow:auto;background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);padding:16px 18px 14px}.midi-settings-dialog h2{margin:0 0 4px;font-size:15px;font-weight:700}.midi-settings-dialog .midi-settings-lead{margin:0 0 14px;font-size:12px;color:var(--muted);line-height:1.45}.midi-settings-mode{margin-bottom:12px}.midi-settings-mode .control-label{font-size:11px;color:var(--muted);margin-bottom:6px}.midi-input-list{border:1px solid var(--border);border-radius:12px;padding:8px 10px;background:#ffffffa6;margin-bottom:10px;max-height:220px;overflow-y:auto}.midi-input-row{display:flex;align-items:flex-start;gap:8px;padding:6px 0;border-bottom:1px solid rgba(15,23,42,.06);font-size:12px;line-height:1.35}.midi-input-row:last-child{border-bottom:none;padding-bottom:0}.midi-input-row input{margin-top:2px;flex-shrink:0}.midi-input-row .midi-in-name{font-weight:600;color:var(--ink);word-break:break-word}.midi-input-row .midi-in-id{font-size:10px;color:var(--muted);font-family:ui-monospace,monospace;margin-top:2px}.midi-settings-hint{font-size:11px;color:var(--muted);margin:0 0 12px;line-height:1.4}.midi-settings-hint.is-warn{color:#b45309}.midi-settings-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:4px}