:root{--team1-color:#2563eb;--team2-color:#dc2626;--background:#0f172a;--surface:#1e293b;--surface-light:#334155;--text:#fff;--text-muted:#94a3b8;--border:#475569;--success:#16a34a}*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;-moz-user-select:none;user-select:none}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--background);color:var(--text);min-height:100vh;overflow:hidden}.container{max-width:100%;margin:0 auto;height:100vh;display:flex;flex-direction:column}.header{background:var(--surface);padding:1rem;text-align:center;flex-shrink:0;border-bottom:2px solid var(--border)}.header h1{font-size:1.5rem;font-weight:700}.tabs{display:flex;gap:0;flex-shrink:0;border-bottom:2px solid var(--border)}.tab,.tabs{background:var(--surface)}.tab{flex:1 1;padding:1rem;color:var(--text-muted);cursor:pointer;font-size:1rem;font-weight:600;transition:all .2s;border:none;border-bottom:3px solid transparent}.tab.active{color:var(--text);border-bottom-color:var(--team1-color)}.tab-content{display:none;flex:1 1;overflow:auto}.tab-content.active{display:flex;flex-direction:column}.setup-form{background:var(--surface);padding:2rem;margin:auto;max-width:500px;width:100%}.team-input{margin-bottom:1.5rem}.team-input label{display:block;margin-bottom:.5rem;color:var(--text);font-size:1rem;font-weight:600}.team-input input{width:100%;padding:1rem;background:var(--surface-light);border:2px solid var(--border);border-radius:8px;color:var(--text);font-size:1.1rem;transition:border-color .2s}.team-input input:focus{outline:none;border-color:var(--team1-color)}.start-btn{width:100%;padding:1.25rem;background:var(--success);color:#fff;border:none;border-radius:8px;font-size:1.25rem;font-weight:700;cursor:pointer;transition:all .2s}.start-btn:active{transform:scale(.98)}.mode-select,.server-select{display:grid;grid-template-columns:1fr 1fr;grid-gap:.75rem;gap:.75rem}.mode-btn{padding:1rem;border:3px solid var(--border);border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;background:var(--surface-light);color:var(--text)}.mode-btn.active{border-color:var(--success);border-width:4px;transform:scale(1.02)}.mode-btn:active{transform:scale(.98)}.server-btn{padding:1rem;border:3px solid var(--border);border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;color:#fff}.server-btn.team1-btn{background:var(--team1-color)}.server-btn.team2-btn{background:var(--team2-color)}.server-btn.active{border-color:var(--success);border-width:4px;transform:scale(1.02)}.server-btn:active{transform:scale(.98)}.scoreboard{flex:1 1;display:flex;flex-direction:column;overflow:hidden}.game-info{justify-content:space-between;padding:.75rem 1rem;background:var(--surface);border-bottom:2px solid var(--border);flex-shrink:0}.game-info,.game-info-left{display:flex;align-items:center}.game-info-left{gap:1.5rem;font-size:.9rem}.set-indicator{font-weight:700;font-size:1rem}.sets-display{color:var(--text-muted);font-size:.9rem}.game-actions{display:flex;gap:.5rem}.action-btn{padding:.5rem 1rem;border:none;border-radius:6px;font-weight:600;font-size:.85rem;cursor:pointer;transition:all .2s}.action-btn.swap{background:var(--surface-light);color:var(--text);border:2px solid var(--border);font-size:1.2rem;padding:.5rem .75rem;font-weight:700}.action-btn.swap:active{transform:scale(.95) rotate(180deg);transition:transform .3s ease}.action-btn.serve{background:var(--success);color:#fff;font-size:1.2rem;padding:.5rem .75rem;border:2px solid var(--success)}.action-btn.serve:active:not(:disabled){transform:scale(.95)}.action-btn.serve.disabled{background:var(--border);border-color:var(--border);opacity:.5;cursor:not-allowed}.action-btn.secondary{background:var(--surface-light);color:var(--text);border:2px solid var(--border)}.action-btn.secondary:active{transform:scale(.95)}.action-btn.primary{background:var(--success);color:#fff}.action-btn.primary:active{transform:scale(.95)}.teams{flex:1 1;display:grid;grid-template-columns:1fr 1fr;overflow:hidden}.team{display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;position:relative;transition:opacity .2s}.team:active{opacity:.8}.team.team1{background:var(--team1-color)}.team.team2{background:var(--team2-color)}.team-name{font-size:1.5rem;text-align:center;padding:0 1rem;color:#fff}.serve-indicator,.team-name{font-weight:700;margin-bottom:.5rem}.serve-indicator{background:hsla(0,0%,100%,.95);color:#000;padding:.4rem .8rem;border-radius:20px;font-size:.8rem;box-shadow:0 2px 8px rgba(0,0,0,.3);display:inline-block}.score{font-size:12rem;font-weight:900;line-height:1;color:#fff;text-shadow:0 4px 8px rgba(0,0,0,.3)}@media (max-width:768px){.score{font-size:9rem}.team-name{font-size:1.25rem}}@media (max-width:480px){.score{font-size:7rem}.team-name{font-size:1rem}.serve-indicator{font-size:.7rem;padding:.3rem .6rem}}@media (max-height:500px) and (orientation:landscape){.score{font-size:5rem}.team-name{font-size:.85rem;margin-bottom:.25rem}.serve-indicator{font-size:.6rem;padding:.2rem .5rem;margin-bottom:.25rem}.game-info{padding:.5rem}.action-btn,.game-info-left{font-size:.75rem}.action-btn{padding:.4rem .8rem}}@media (min-width:768px) and (orientation:landscape){.score{font-size:15rem}.team-name{font-size:1.75rem}.serve-indicator{font-size:.9rem}}.history{padding:1.5rem;overflow-y:auto;flex:1 1}.history h2{margin-bottom:1.5rem;font-size:1.5rem}.history-list{display:flex;flex-direction:column;gap:1rem}.history-item{background:var(--surface);padding:1.5rem;border-radius:12px}.history-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.history-date{color:var(--text-muted);font-size:.9rem}.history-scores{display:grid;grid-template-columns:1fr auto 1fr;grid-gap:1rem;gap:1rem;align-items:center;margin-bottom:1rem}.history-team{text-align:center}.history-team-name{font-weight:600;margin-bottom:.25rem}.history-team-score{font-size:1.5rem;font-weight:700}.history-team.winner .history-team-score{color:var(--success)}.vs{color:var(--text-muted);font-weight:600}.set-scores{background:var(--surface-light);padding:1rem;border-radius:8px;margin-top:1rem}.set-scores-title{font-weight:600;margin-bottom:.5rem;color:var(--text-muted);font-size:.9rem}.set-score-item{display:flex;gap:.5rem;padding:.5rem 0;font-size:.95rem}.set-score-item span:first-child{min-width:4rem;color:var(--text-muted)}.winner-score{color:var(--success);font-weight:700}.help{padding:1.5rem;overflow-y:auto;flex:1 1}.help h2{margin-bottom:1.5rem;font-size:1.5rem}.help-section{background:var(--surface);padding:1.5rem;border-radius:12px;margin-bottom:1.5rem}.help-section h3{margin-bottom:1rem;font-size:1.1rem;color:var(--text)}.instruction-item{display:flex;align-items:center;gap:1rem;padding:.75rem 0;color:var(--text);font-size:.95rem}.instruction-item:not(:last-child){border-bottom:1px solid var(--border)}.instruction-icon{font-size:1.5rem;min-width:2.5rem;text-align:center}.rules-list{list-style:none;padding:0}.rules-list li{padding:.75rem 0 .75rem 1.5rem;position:relative;color:var(--text)}.rules-list li:before{content:"✓";position:absolute;left:0;color:var(--success);font-weight:700}.rules-list li:not(:last-child){border-bottom:1px solid var(--border)}.empty-state{text-align:center;padding:3rem 1rem;color:var(--text-muted)}.winner-modal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.8);align-items:center;justify-content:center;z-index:1000}.winner-modal.show{display:flex}.serve-setup-modal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.9);align-items:center;justify-content:center;z-index:1000;overflow-y:auto}.serve-setup-modal.show{display:flex}.serve-setup-content{background:var(--surface);padding:2rem;border-radius:16px;max-width:500px;width:90%;margin:1rem;max-height:90vh;overflow-y:auto}.serve-setup-content h2{font-size:1.75rem;margin-bottom:1rem;text-align:center}.serve-setup-content>p{text-align:center;color:var(--text-muted);margin-bottom:2rem}.serve-setup-section{margin-bottom:2rem}.serve-setup-section h3{font-size:1rem;margin-bottom:.75rem;color:var(--text-muted)}.player-select{display:grid;grid-template-columns:1fr 1fr;grid-gap:.75rem;gap:.75rem}.player-btn{padding:1rem;border:3px solid var(--border);border-radius:8px;background:var(--surface-light);color:var(--text);font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s}.player-btn.active{border-color:var(--success);border-width:4px;transform:scale(1.02)}.player-btn:active{transform:scale(.98)}.team-serve-select{display:grid;grid-template-columns:1fr 1fr;grid-gap:.75rem;gap:.75rem}.team-serve-btn{padding:1rem;border:3px solid var(--border);border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;color:#fff}.team-serve-btn.team1-btn{background:var(--team1-color)}.team-serve-btn.team2-btn{background:var(--team2-color)}.team-serve-btn.active{border-color:var(--success);border-width:4px;transform:scale(1.02)}.team-serve-btn:active{transform:scale(.98)}.confirm-serve-btn{width:100%;padding:1.25rem;background:var(--success);color:#fff;border:none;border-radius:8px;font-size:1.25rem;font-weight:700;cursor:pointer;transition:all .2s;margin-top:1rem}.confirm-serve-btn:active{transform:scale(.98)}.winner-content{background:var(--surface);padding:3rem;border-radius:16px;text-align:center;max-width:500px;margin:1rem}.winner-content h2{font-size:2.5rem;margin-bottom:1rem}.winner-content .team-name{color:var(--success);font-size:2rem;margin-bottom:2rem}.winner-actions{display:flex;gap:1rem;justify-content:center}