:root{--color-work: #1b9b78;--color-rest: #3b82f6;--color-warmup: #b88020;--color-transition: #d05050;--color-cooldown: #6b7280;--bg: #ffffff;--bg-surface: #f3f4f6;--bg-card: #ffffff;--text-primary: #111827;--text-secondary: #4b5563;--text-muted: #9ca3af;--border: #e5e7eb;--shadow: rgba(0, 0, 0, .08);--btn-bg: #111827;--btn-text: #ffffff;--btn-secondary-bg: #e5e7eb;--btn-secondary-text: #111827;--btn-danger-bg: #ef4444;--btn-danger-text: #ffffff;--timer-font-size: 20vw;--transition-fast: .15s ease;--transition-normal: .25s ease}@media(prefers-color-scheme:dark){:root:not(.light){--bg: #0f172a;--bg-surface: #1e293b;--bg-card: #1e293b;--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #64748b;--border: #334155;--shadow: rgba(0, 0, 0, .3);--btn-bg: #f1f5f9;--btn-text: #0f172a;--btn-secondary-bg: #334155;--btn-secondary-text: #f1f5f9}}.dark{--bg: #0f172a;--bg-surface: #1e293b;--bg-card: #1e293b;--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #64748b;--border: #334155;--shadow: rgba(0, 0, 0, .3);--btn-bg: #f1f5f9;--btn-text: #0f172a;--btn-secondary-bg: #334155;--btn-secondary-text: #f1f5f9}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--bg);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}#app{min-height:100vh;display:flex;flex-direction:column}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}button{font-family:inherit;font-size:1rem;cursor:pointer;border:none;border-radius:8px;min-width:44px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;transition:opacity var(--transition-fast),transform 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1px 3px var(--shadow);transition:box-shadow var(--transition-normal)}.mode-card:hover{box-shadow:0 4px 12px var(--shadow)}.mode-card-btn{width:100%;background:transparent;color:var(--text-primary);padding:1.25rem 1rem;display:flex;align-items:center;gap:.75rem;text-align:left;border-radius:12px 12px 0 0}.mode-card-icon{font-size:2rem;line-height:1;flex-shrink:0}.mode-card-info{display:flex;flex-direction:column;gap:.15rem}.mode-card-name{font-size:1.125rem;font-weight:600;color:var(--text-primary)}.mode-card-desc{font-size:.85rem;color:var(--text-secondary)}.mode-presets{display:flex;gap:.5rem;padding:0 1rem 1rem;flex-wrap:wrap}.preset-btn{background:var(--bg-surface);color:var(--text-secondary);font-size:.8rem;font-weight:500;padding:.4rem .75rem;border-radius:20px;white-space:nowrap}.preset-btn:hover{background:var(--btn-bg);color:var(--btn-text)}.config-screen{min-height:100vh;padding:1rem;display:flex;flex-direction:column;background-color:var(--bg)}.config-header{display:flex;align-items:center;gap:.75rem;padding:.5rem 0 1.5rem}.back-btn{background:var(--bg-surface);color:var(--text-primary);font-size:.9rem;padding:.5rem .75rem}.config-title{font-size:1.25rem;font-weight:700;color:var(--text-primary)}.config-form{display:flex;flex-direction:column;gap:1.25rem;flex:1}.config-field-group{display:flex;flex-direction:column;gap:.4rem}.config-label{font-size:.9rem;font-weight:500;color:var(--text-secondary)}.stepper{display:flex;align-items:center;gap:0;border:1px solid var(--border);border-radius:8px;overflow:hidden;background:var(--bg-card)}.stepper-btn{background:var(--bg-surface);color:var(--text-primary);font-size:1.25rem;font-weight:600;width:52px;height:52px;border-radius:0;flex-shrink:0}.stepper-btn:active{background:var(--border)}.stepper-input{flex:1;text-align:center;font-size:1.25rem;font-weight:600;border:none;background:transparent;color:var(--text-primary);padding:.5rem;min-width:0;-webkit-appearance:textfield;appearance:textfield;-moz-appearance:textfield}.stepper-input::-webkit-inner-spin-button,.stepper-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.stepper-input:focus{outline:none;box-shadow:inset 0 0 0 2px var(--color-work)}.config-select{font-family:inherit;font-size:1rem;padding:.75rem;border:1px solid var(--border);border-radius:8px;background:var(--bg-card);color:var(--text-primary);min-height:44px}.config-select:focus{outline:2px solid var(--color-work);outline-offset:2px}.config-field-error{font-size:.8rem;color:var(--color-transition);min-height:0}.config-error-summary{font-size:.9rem;color:var(--color-transition);background:#ef44441a;padding:.75rem;border-radius:8px}.start-btn{background:var(--color-work);color:#fff;font-size:1.125rem;font-weight:700;padding:1rem;border-radius:12px;margin-top:auto;width:100%}.start-btn:hover{opacity:.9}.timer-display-screen{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1rem;transition:background-color var(--transition-normal);overflow:hidden}.timer-segment-label{font-size:1.25rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:#ffffffd9;margin-bottom:.25rem}.timer-round-indicator{font-size:1rem;font-weight:500;color:#ffffffb3;margin-bottom:.5rem}.round-tracker-count{font-size:1.1rem;font-weight:600;color:#fffc;margin-top:.5rem}.timer-time-display{font-size:var(--timer-font-size);font-weight:800;font-variant-numeric:tabular-nums;line-height:1;color:#fff;text-shadow:0 2px 8px rgba(0,0,0,.2);-webkit-user-select:none;user-select:none}.timer-next-up{font-size:.95rem;color:#ffffffa6;margin-top:.75rem}.timer-control-bar{display:flex;gap:.75rem;margin-top:auto;padding-bottom:env(safe-area-inset-bottom,.5rem);flex-wrap:wrap;justify-content:center}.timer-btn{font-size:1rem;font-weight:600;padding:.75rem 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rgba(255,255,255,.1);font-variant-numeric:tabular-nums}@media(orientation:landscape){.timer-display-screen{flex-direction:row;flex-wrap:wrap;justify-content:center;align-items:center;gap:1rem}.timer-time-display{font-size:min(var(--timer-font-size),25vh)}.timer-control-bar{margin-top:0;padding-bottom:0}}.timer-lock-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;z-index:100;touch-action:none}.timer-lock-msg{font-size:1.25rem;font-weight:600;color:#fffc;text-align:center;padding:2rem;-webkit-user-select:none;user-select:none}.lead-in-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000d9;display:flex;align-items:center;justify-content:center;z-index:200}.lead-in-number{font-size:30vw;font-weight:800;color:#fff;line-height:1;-webkit-user-select:none;user-select:none;animation:lead-in-pulse 1s ease-in-out infinite}@keyframes lead-in-pulse{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.08);opacity:.85}}.settings-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;z-index:300;animation:fade-in var(--transition-normal) forwards}.settings-panel{position:fixed;top:0;right:0;bottom:0;width:min(320px,85vw);background:var(--bg);box-shadow:-4px 0 24px var(--shadow);z-index:301;display:flex;flex-direction:column;animation:slide-in-right var(--transition-normal) forwards}@keyframes slide-in-right{0%{transform:translate(100%)}to{transform:translate(0)}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.settings-header{display:flex;align-items:center;justify-content:space-between;padding:1rem;border-bottom:1px solid var(--border)}.settings-title{font-size:1.125rem;font-weight:700;color:var(--text-primary)}.settings-close-btn{background:var(--bg-surface);color:var(--text-primary);width:44px;height:44px;border-radius:50%;font-size:1rem}.settings-list{flex:1;overflow-y:auto;padding:.5rem 0}.settings-row{display:flex;align-items:center;justify-content:space-between;padding:.85rem 1rem;gap:1rem}.settings-label{font-size:.95rem;color:var(--text-primary);flex:1}.settings-toggle{-moz-appearance:none;appearance:none;-webkit-appearance:none;width:48px;height:28px;background:var(--border);border-radius:14px;position:relative;cursor:pointer;transition:background var(--transition-fast);flex-shrink:0}.settings-toggle:after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;background:#fff;border-radius:50%;transition:transform var(--transition-fast);box-shadow:0 1px 3px #0003}.settings-toggle:checked{background:var(--color-work)}.settings-toggle:checked:after{transform:translate(20px)}.settings-toggle:focus-visible{outline:2px solid var(--color-work);outline-offset:2px}.settings-select{font-family:inherit;font-size:.9rem;padding:.5rem .75rem;border:1px solid var(--border);border-radius:8px;background:var(--bg-surface);color:var(--text-primary);min-height:44px;min-width:120px}.settings-select:focus{outline:2px solid var(--color-work);outline-offset:2px}.session-recovery-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:400;padding:1rem}.session-recovery-dialog{background:var(--bg-card);border-radius:16px;padding:1.5rem;max-width:360px;width:100%;box-shadow:0 8px 32px var(--shadow)}.session-recovery-title{font-size:1.125rem;font-weight:700;color:var(--text-primary);margin-bottom:.5rem}.session-recovery-desc{font-size:.9rem;color:var(--text-secondary);margin-bottom:1.25rem;line-height:1.4}.session-recovery-actions{display:flex;gap:.75rem}.session-recovery-btn{flex:1;font-size:1rem;font-weight:600;padding:.75rem;border-radius:10px}.session-recovery-btn-resume{background:var(--color-work);color:#fff}.session-recovery-btn-resume:hover{opacity:.9}.session-recovery-btn-discard{background:var(--bg-surface);color:var(--text-primary)}.session-recovery-btn-discard:hover{background:var(--border)}@media(min-width:768px){.mode-select-screen,.config-screen{max-width:640px;margin:0 auto}.mode-select-header{padding:.25rem 0 .5rem}.mode-grid{grid-template-columns:1fr 1fr;gap:.75rem}.mode-card-btn{padding:.75rem}.config-form{gap:.75rem}}