:root{color-scheme:dark;--bg: #07080a;--panel: #11151b;--panel-2: #171d25;--line: #2b3441;--text: #f6f8fb;--muted: #aab4c0;--green: #2dd4bf;--blue: #60a5fa;--red: #f87171;--gold: #fbbf24}*{box-sizing:border-box}body{margin:0;min-width:320px;background:radial-gradient(circle at top left,rgba(96,165,250,.16),transparent 34rem),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,select{font:inherit}.app-shell{width:min(1440px,100%);margin:0 auto;padding:28px}.hero{display:flex;justify-content:space-between;gap:16px;align-items:flex-end;margin-bottom:22px}.eyebrow{margin:0 0 6px;color:var(--green);font-size:12px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.14em;text-transform:uppercase}h1,h2{margin:0;letter-spacing:0}h1{font-size:clamp(32px,5vw,64px)}h2{font-size:26px}.subtitle{margin:10px 0 0;color:var(--muted);line-height:1.6}.trust-badge{display:flex;align-items:center;gap:8px;border:1px solid rgba(251,191,36,.55);background:#fbbf241f;color:#fde68a;border-radius:8px;padding:10px 12px;white-space:nowrap}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 420px;gap:18px;align-items:start}.panel{border:1px solid var(--line);background:#11151bf0;border-radius:8px;padding:18px}.panel-title{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:14px}.searchbox{display:grid;grid-template-columns:auto 90px auto;gap:8px;align-items:center;border:1px solid var(--line);background:#0b0f14;border-radius:8px;padding:7px 8px}.searchbox input{border:0;outline:0;background:transparent;color:var(--text);width:100%}.searchbox button,.hand-cell{border:1px solid var(--line);color:var(--text);cursor:pointer}.searchbox button{background:var(--panel-2);border-radius:6px;padding:6px 10px}.hand-grid{display:grid;grid-template-columns:repeat(13,minmax(42px,1fr));gap:5px}.hand-cell{aspect-ratio:1;border-radius:6px;font-weight:800;font-size:clamp(12px,1.4vw,17px);text-shadow:0 1px 1px rgba(0,0,0,.45)}.hand-cell.pair{background:linear-gradient(135deg,#7f1d1d,#b91c1c)}.hand-cell.suited{background:linear-gradient(135deg,#115e59,#0f766e)}.hand-cell.offsuit{background:linear-gradient(135deg,#1e3a5f,#172554)}.hand-cell.active{outline:3px solid var(--gold);box-shadow:0 0 0 2px #fbbf2433}.legend{display:flex;flex-wrap:wrap;gap:14px;margin-top:12px;color:var(--muted);font-size:14px}.legend span{display:flex;align-items:center;gap:6px}.legend i{width:12px;height:12px;border-radius:3px;display:inline-block}.pair-dot{background:#b91c1c}.suited-dot{background:#0f766e}.offsuit-dot{background:#1e3a5f}.decision-panel{position:sticky;top:18px}label{display:block;color:var(--muted);font-size:13px;margin:14px 0 6px}select{width:100%;border:1px solid var(--line);background:#0b0f14;color:var(--text);border-radius:7px;padding:10px}.answer-card{margin-top:16px;border:1px solid var(--line);background:#0b0f14;border-radius:8px;padding:14px}.scenario-text{margin:0 0 12px;color:var(--muted)}.action-pill{width:100%;border-radius:8px;padding:18px;text-align:center;font-size:34px;font-weight:900}.action-pill.action-fold{background:#29313c}.action-pill.action-check,.action-pill.action-call{background:#164e63}.action-pill.action-open,.action-pill.action-iso,.action-pill.action-3bet,.action-pill.action-4bet{background:#7f1d1d}.action-pill.action-jam{background:#581c87}.confidence{margin:10px 0 0;color:var(--muted);font-size:13px;line-height:1.5}.review-note{margin:8px 0 0;color:#dbeafe;font-size:13px;line-height:1.55}.review-note.warning{color:#fde68a}.action-list{display:grid;gap:10px;margin-top:14px}.action-item{border:1px solid var(--line);border-left-width:4px;background:#0b0f14b8;border-radius:8px;padding:12px}.action-item.recommended{border-left-color:var(--green)}.action-item.consider{border-left-color:var(--gold)}.action-item.avoid{border-left-color:var(--red)}.action-item div{display:flex;justify-content:space-between;gap:10px;align-items:center}.action-item span{color:var(--muted);font-size:13px}.action-item p{margin:8px 0 0;color:#dbe3ea;line-height:1.55}.data-note{margin-top:14px;border:1px solid rgba(251,191,36,.4);background:#fbbf2414;border-radius:8px;padding:12px;color:#fde68a}.data-note p{margin:6px 0 0;line-height:1.5}.error{border:1px solid rgba(248,113,113,.5);background:#f871711f;color:#fecaca;border-radius:8px;padding:12px;margin-bottom:16px}.mode-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}.mode-tabs button,.study-actions button,.feedback button,.mistakes-panel button,.danger-button{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid var(--line);background:var(--panel-2);color:var(--text);border-radius:7px;padding:9px 12px;cursor:pointer}.mode-tabs button.active{border-color:#2dd4bfb3;background:#2dd4bf29;color:#ccfbf1}.mode-tabs span{min-width:24px;border-radius:999px;background:#fbbf242e;color:#fde68a;padding:1px 7px;font-size:12px}.study-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:18px;align-items:start}.study-topline{display:flex;justify-content:space-between;align-items:start;gap:16px;margin-bottom:16px}.study-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.study-actions button:disabled,.answer-buttons button:disabled,.mistakes-panel button:disabled{cursor:not-allowed;opacity:.45}.question-card{display:grid;grid-template-columns:180px minmax(0,1fr);gap:18px;align-items:stretch;border:1px solid var(--line);background:#0b0f14;border-radius:8px;padding:14px}.question-hand{display:grid;place-items:center;min-height:150px;border-radius:8px;background:linear-gradient(135deg,#7f1d1d,#164e63);color:#fff7ed;font-size:58px;font-weight:950}.question-card h3{margin:0;font-size:24px;line-height:1.25}.question-card p:not(.eyebrow){margin:12px 0 0;color:var(--muted);line-height:1.6}.answer-buttons{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:14px}.answer-buttons button{min-height:52px;border:1px solid var(--line);border-radius:7px;background:#202832;color:var(--text);font-weight:800;cursor:pointer}.feedback{margin-top:14px;border:1px solid var(--line);border-left-width:5px;border-radius:8px;padding:14px;background:#0b0f14cc}.feedback.good{border-left-color:var(--green)}.feedback.bad{border-left-color:var(--red)}.feedback p{margin:8px 0 0;color:#dbe3ea;line-height:1.55}.feedback button{margin-top:12px}.study-stats 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button{margin-top:12px}@media(max-width:980px){.app-shell{padding:16px}.hero,.panel-title{display:grid;align-items:start}.workspace,.study-layout{grid-template-columns:1fr}.decision-panel{position:static}.hand-grid{gap:4px}.question-card{grid-template-columns:1fr}.question-hand{min-height:110px}.answer-buttons{grid-template-columns:repeat(2,minmax(0,1fr))}.study-topline{display:grid}.study-actions{justify-content:start}}