.app{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem}.game-board{width:min(640px,100%);background:#00000040;border-radius:12px;padding:2rem;box-shadow:0 8px 32px #0000004d}.game-board__header{text-align:center;margin-bottom:2rem}.game-board__header h1{margin:0;font-size:2rem}.game-board__subtitle{margin:.25rem 0 0;opacity:.75;font-size:.875rem}.hand{margin-bottom:1.5rem}.hand__label{margin:0 0 .75rem;font-size:1.125rem;font-weight:600}.hand__total{font-weight:400;opacity:.85}.hand__cards{display:flex;flex-wrap:wrap;gap:.5rem}.card{width:64px;height:88px;background:#fff;border-radius:6px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-weight:700;box-shadow:0 2px 6px #0003}.card--red{color:#c0392b}.card--black{color:#2c3e50}.card--hidden{background:#1a5276;color:#fff;font-size:1.5rem}.card__rank{font-size:1.25rem}.card__suit{font-size:1.125rem}.game-board__result{text-align:center;font-size:1.25rem;font-weight:600;margin:1rem 0;padding:.75rem;background:#ffffff1a;border-radius:6px}.controls{display:flex;gap:.75rem;justify-content:center;margin-top:1.5rem}.controls button{padding:.625rem 1.25rem;font-size:1rem;font-weight:600;border:none;border-radius:6px;cursor:pointer;background:#f1c40f;color:#1a1a1a}.controls button:hover:not(:disabled){background:#f39c12}.controls button:disabled{opacity:.4;cursor:not-allowed}.start-screen{width:min(640px,100%);background:#00000040;border-radius:12px;padding:3rem 2rem;box-shadow:0 8px 32px #0000004d;text-align:center}.start-screen h1{margin:0;font-size:2.5rem}.start-screen p{margin:.5rem 0 2rem;opacity:.75}.start-screen__play{padding:.75rem 2rem;font-size:1.125rem;font-weight:600;border:none;border-radius:6px;cursor:pointer;background:#f1c40f;color:#1a1a1a}.start-screen__play:hover{background:#f39c12}*{box-sizing:border-box}body{margin:0;min-height:100vh;font-family:system-ui,-apple-system,sans-serif;background:#0d5c2e;color:#f5f5f5}#root{min-height:100vh}