:root{--color-bg: #0d0d0f;--color-surface: #1a1a1f;--color-border: #2a2a32;--color-accent: #7c6af7;--color-accent-2: #a89cff;--color-text: #e8e8f0;--color-muted: #6b6b80;--color-success: #4ade80;--color-danger: #f87171;--font-sans: system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono: "SF Mono", "Fira Code", "Consolas", monospace;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;width:100%}body{background:var(--color-bg);color:var(--color-text);font-family:var(--font-sans);font-size:14px;line-height:1.5;overflow:hidden;-webkit-font-smoothing:antialiased}.screen{display:flex;flex-direction:column;height:100%;width:100%;padding:16px;overflow:hidden}.screen--center{align-items:center;justify-content:center;gap:16px}.screen--overlay{position:fixed;inset:0;background:var(--color-bg);z-index:100}.loading-pulse{width:40px;height:40px;border-radius:50%;border:2px solid var(--color-border);border-top-color:var(--color-accent);animation:spin .8s linear infinite}.loading-text{color:var(--color-muted);font-size:13px}.error-icon{font-size:32px}.error-title{font-size:16px;font-weight:600}.error-message{color:var(--color-muted);font-size:13px;text-align:center;max-width:280px}.screen--lobby{gap:12px}.lobby-header{display:flex;align-items:center;justify-content:space-between;padding-bottom:8px;border-bottom:1px solid var(--color-border)}.app-title{font-size:18px;font-weight:700;letter-spacing:-.02em;background:linear-gradient(135deg,var(--color-accent),var(--color-accent-2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.participant-count{font-size:12px;color:var(--color-muted)}.lobby-participants{flex:1;overflow-y:auto;scrollbar-width:none}.lobby-participants::-webkit-scrollbar{display:none}.lobby-settings{display:flex;flex-direction:column;gap:8px;padding:12px 0;border-top:1px solid var(--color-border)}.settings-label{font-size:11px;font-weight:600;color:var(--color-muted);text-transform:uppercase;letter-spacing:.08em;margin-top:4px}.lobby-actions{display:flex;gap:8px}.ready-status{font-size:11px;color:var(--color-muted);text-align:center}.participant-list{list-style:none;display:flex;flex-direction:column;gap:6px}.participant-item{display:flex;align-items:center;gap:10px;padding:6px 8px;border-radius:var(--radius-sm);background:var(--color-surface)}.participant-avatar-wrap{position:relative;flex-shrink:0}.participant-avatar{border-radius:50%;display:block}.ready-dot{position:absolute;bottom:-1px;right:-1px;width:10px;height:10px;border-radius:50%;background:var(--color-border);border:2px solid var(--color-bg);transition:background .2s}.ready-dot--on{background:var(--color-success)}.participant-name{flex:1;font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.participant-you{color:var(--color-muted);font-weight:400}.ready-badge{font-size:11px;color:var(--color-muted);font-weight:500;flex-shrink:0}.ready-badge--on{color:var(--color-success)}.segmented-control{display:flex;gap:4px;background:var(--color-surface);border-radius:var(--radius-sm);padding:3px}.segment-btn{flex:1;padding:5px 8px;border:none;border-radius:calc(var(--radius-sm) - 2px);background:transparent;color:var(--color-muted);font-size:12px;font-weight:500;cursor:pointer;transition:background .15s,color .15s;white-space:nowrap}.segment-btn:hover{color:var(--color-text)}.segment-btn--active{background:var(--color-accent);color:#fff}.volume-wrap{display:flex;align-items:center;gap:8px}.volume-icon{font-size:14px}.volume-slider{flex:1;accent-color:var(--color-accent);height:3px}.countdown-number{font-size:96px;font-weight:800;color:var(--color-accent);font-family:var(--font-mono);animation:countdown-pop .4s cubic-bezier(.34,1.56,.64,1)}.screen--session{align-items:center;justify-content:center;gap:20px}.session-status{display:flex;justify-content:center}.status-badge{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.12em;padding:3px 10px;border-radius:99px}.status-badge--focus{background:#7c6af726;color:var(--color-accent-2)}.status-badge--break{background:#4ade801f;color:var(--color-success)}.session-timer,.circular-timer{display:flex;justify-content:center}.session-participants{text-align:center}.participants-label{font-size:12px;color:var(--color-muted)}.session-controls{display:flex;align-items:center;gap:12px;width:100%;max-width:240px}.pulse-wave{display:flex;flex-direction:column;align-items:center;gap:4px}.pulse-wave-label{font-size:10px;color:var(--color-muted);letter-spacing:.08em}.screen--end{gap:12px}.end-icon{font-size:48px;color:var(--color-success);animation:fadeIn .4s ease}.end-title{font-size:20px;font-weight:700}.end-subtitle{color:var(--color-muted);font-size:14px}.end-actions{display:flex;flex-direction:column;gap:8px;width:100%;max-width:220px;margin-top:8px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:9px 16px;border:none;border-radius:var(--radius-sm);font-size:13px;font-weight:600;cursor:pointer;transition:opacity .15s,transform .1s;white-space:nowrap;width:100%}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn--primary{background:var(--color-accent);color:#fff}.btn--primary:hover:not(:disabled){opacity:.88}.btn--secondary{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border)}.btn--secondary:hover{border-color:var(--color-muted)}.btn--accent{background:linear-gradient(135deg,var(--color-accent),var(--color-accent-2));color:#fff}.btn--accent:hover:not(:disabled){opacity:.9}.btn--ghost{background:transparent;color:var(--color-muted);border:1px solid var(--color-border)}.btn--ghost:hover{color:var(--color-text)}.btn--small{padding:5px 12px;font-size:12px;width:auto}.toast-container{position:fixed;bottom:16px;left:50%;transform:translate(-50%);display:flex;flex-direction:column;gap:6px;z-index:200;pointer-events:none}.toast{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:6px 14px;font-size:12px;color:var(--color-text);white-space:nowrap;animation:toastIn .2s ease,toastOut .2s ease 1.8s forwards;pointer-events:auto;cursor:pointer}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}@keyframes countdown-pop{0%{opacity:0;transform:scale(.6)}to{opacity:1;transform:scale(1)}}@keyframes toastIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes toastOut{0%{opacity:1}to{opacity:0}}@keyframes pulse-ring{0%{transform:scale(1);opacity:.6}50%{transform:scale(1.04);opacity:.9}to{transform:scale(1);opacity:.6}}.screen--session .circular-timer svg{animation:pulse-ring 4s ease-in-out infinite}