:root{--bg-main:#fff;--bg-sidebar:#f8f9fa;--border-color:#dee2e6;--text-main:#212529;--text-muted:#6c757d;--accent-red:#e03131;--accent-red-hover:#c92a2a;--clock-red:#e03131;--font-digital:"Share Tech Mono", monospace;--font-pixel:"VT323", monospace;--font-sans:"Inter", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-main);color:var(--text-main);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{width:100vw;height:100vh;display:flex;overflow:hidden}.sidebar{background-color:var(--bg-sidebar);border-right:1px solid var(--border-color);flex-direction:column;width:250px;padding-top:30px;display:flex}.logo{font-family:var(--font-pixel);letter-spacing:2px;margin-bottom:40px;padding-left:30px;font-size:2.2rem}.menu{flex-direction:column;list-style:none;display:flex}.menu-item{color:var(--text-muted);cursor:pointer;padding:12px 30px;font-size:1rem;transition:all .2s;position:relative}.menu-item:hover{color:var(--text-main)}.menu-item.active{color:var(--accent-red)}.menu-item.active:before{content:"•";color:var(--accent-red);position:absolute;left:15px}.menu-item.active:after{content:"";background-color:var(--accent-red);width:4px;position:absolute;top:0;bottom:0;right:0}.main-content{background-color:var(--bg-main);flex-direction:column;flex:1;justify-content:center;align-items:center;display:flex;position:relative}.state-label{font-family:var(--font-sans);letter-spacing:2px;text-transform:uppercase;color:var(--text-main);margin-bottom:20px;font-size:.9rem}.main-timer{font-family:var(--font-digital);color:var(--clock-red);align-items:center;margin-bottom:60px;font-size:8rem;line-height:1;display:flex}.bracket{color:var(--text-main);text-shadow:none;font-size:7.5rem;font-weight:300;transform:translateY(-4px)}.stats-container{gap:40px;margin-bottom:70px;display:flex}.stat-item{flex-direction:column;align-items:center;display:flex}.stat-label{font-family:var(--font-sans);color:var(--text-main);letter-spacing:1px;text-transform:uppercase;margin-bottom:10px;font-size:.8rem}.stat-value{font-family:var(--font-digital);color:var(--text-main);font-size:2rem}.stat-bracket{font-weight:300}.actions{gap:20px;display:flex}.btn{color:var(--text-main);border:1px solid var(--border-color);font-size:.9rem;font-family:var(--font-pixel);letter-spacing:1px;cursor:pointer;text-transform:uppercase;background-color:#0000;border-radius:4px;padding:12px 24px;transition:all .2s}.btn:hover{background-color:#0000000d}.btn-primary{background-color:var(--accent-red);border-color:var(--accent-red);color:#fff}.btn-primary:hover{background-color:var(--accent-red-hover);border-color:var(--accent-red-hover)}.progress-page{flex-direction:column;align-items:center;gap:40px;width:100%;height:100%;padding:40px;display:flex;overflow-y:auto}.progress-page h2{font-family:var(--font-pixel);letter-spacing:2px;color:var(--accent-red);margin-bottom:10px;font-size:2rem}.graph-container{border:1px solid var(--border-color);background-color:#fff;border-radius:8px;width:100%;padding:20px}.graph-grid{flex-wrap:wrap;justify-content:center;gap:4px;display:flex}.graph-column{flex-direction:column-reverse;gap:4px;display:flex}.graph-cell{border-radius:2px;width:12px;height:12px;transition:transform .1s}.graph-cell:hover{outline:1px solid #00000080;transform:scale(1.2)}.session-list{flex-direction:column;gap:15px;width:100%;max-width:800px;display:flex}.session-card{border:1px solid var(--border-color);background-color:#fff;border-radius:8px;justify-content:space-between;align-items:center;padding:20px;transition:all .2s;display:flex}.session-card:hover{background-color:#f8f9fa;border-color:#dee2e6}.session-info,.session-stats{font-family:var(--font-sans);flex-direction:column;gap:8px;font-size:.9rem;display:flex}.session-info strong,.session-stats strong{color:var(--text-muted)}.status{border-radius:4px;padding:2px 6px;font-size:.8rem;font-weight:600}.status.started{color:#39d353;background-color:#39d3531a;border:1px solid #39d3534d}.status.finished{color:var(--text-main);background-color:#0000000d;border:1px solid #0000001a}.btn-delete{color:var(--accent-red);border-color:#e0313180;padding:8px 16px;font-size:.8rem}.btn-delete:hover{border-color:var(--accent-red);background-color:#e031311a}.no-data{text-align:center;color:var(--text-muted);font-family:var(--font-sans);padding:40px}