:root{--font-heading: "Oswald", "Impact", -apple-system, sans-serif;--font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", monospace;--bg-primary: #111215;--bg-secondary: #17181f;--bg-card: #1a1b22;--bg-card-hover: #21222c;--bg-input: #131418;--border-subtle: #272933;--border-card: #323542;--border-focus: #df0001;--accent-red: #df0001;--accent-red-hover: #b80001;--accent-red-subtle: rgba(223, 0, 1, .12);--fret-green: #22c55e;--fret-red: #ef4444;--fret-yellow: #eab308;--fret-blue: #0284c7;--fret-orange: #f97316;--text-primary: #f4f4f6;--text-secondary: #a1a1aa;--text-muted: #71717a;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 8px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);background-color:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.5;overflow-x:hidden;background-image:linear-gradient(180deg,#16171d,#111215 350px)}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:600;text-transform:uppercase;letter-spacing:.04em}button,input,select,textarea{font-family:inherit}.rb-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:0 4px 16px #0006;transition:border-color .15s ease,background .15s ease}.rb-card:hover{border-color:var(--border-card)}.rb-input{background:var(--bg-input);border:1px solid var(--border-subtle);border-radius:var(--radius-md);color:var(--text-primary);padding:9px 12px;font-size:.92rem;transition:border-color .15s ease}.rb-input:focus{outline:none;border-color:var(--accent-red);box-shadow:0 0 0 1px var(--accent-red)}.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--accent-red);color:#fff;font-family:var(--font-heading);text-transform:uppercase;letter-spacing:.05em;font-weight:600;font-size:1.05rem;padding:11px 22px;border-radius:var(--radius-md);border:1px solid #ff2627;cursor:pointer;box-shadow:0 2px 8px #df000159;transition:background .15s ease,transform .1s ease}.btn-primary:hover:not(:disabled){background:var(--accent-red-hover);border-color:#df0001}.btn-primary:active:not(:disabled){transform:translateY(1px)}.btn-primary:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:#23252e;color:var(--text-primary);font-weight:500;font-size:.9rem;padding:9px 16px;border-radius:var(--radius-md);border:1px solid #363946;cursor:pointer;transition:background .15s ease,border-color .15s ease}.btn-secondary:hover:not(:disabled){background:#2b2e3b;border-color:#4a4e5f;color:#fff}.btn-secondary:disabled{opacity:.45;cursor:not-allowed}.btn-danger{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:#ef44441a;color:#f87171;font-weight:500;font-size:.85rem;padding:6px 12px;border-radius:var(--radius-sm);border:1px solid rgba(239,68,68,.25);cursor:pointer;transition:background .15s ease,border-color .15s ease}.btn-danger:hover{background:#ef444433;border-color:#ef4444}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:var(--radius-sm);font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.badge-red{background:#df000126;color:#ff4d4d;border:1px solid rgba(223,0,1,.35)}.badge-green{background:#22c55e1f;color:#4ade80;border:1px solid rgba(34,197,94,.3)}.badge-yellow{background:#eab3081f;color:#facc15;border:1px solid rgba(234,179,8,.3)}.badge-blue{background:#0284c71f;color:#38bdf8;border:1px solid rgba(2,132,199,.3)}.badge-orange{background:#f973161f;color:#fb923c;border:1px solid rgba(249,115,22,.3)}.badge-neutral{background:#252732;color:var(--text-secondary);border:1px solid #363946}::-webkit-scrollbar{width:7px;height:7px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:#2d303d;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#3d4152}@keyframes spin{to{transform:rotate(360deg)}}.spin{animation:spin 1s linear infinite}