:root{--color-primary:#ffc107;--color-primary-dim:#c79100;--color-accent:#a05a00;--color-on-primary:#2b2000;--color-bg:#f4f3f1;--color-surface:#fff;--color-surface-2:#e9e7e3;--color-on-bg:#1f1d1b;--color-muted:#6b6864;--color-border:#00000014;--color-work:#2e9e3f;--color-rest:#ef6c00;--color-countdown:var(--color-accent);--color-neutral:#546e7a;--radius-sm:12px;--radius-md:16px;--space:20px;--space-sm:12px;--font:system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box}html,body,#app{height:100%}body{background:var(--color-bg);color:var(--color-on-bg);font-family:var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0}#app{flex-direction:column;display:flex}h1,h2,h3{letter-spacing:.04em;margin:0;font-weight:700}button{cursor:pointer;font-family:inherit}button:focus-visible,input:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.app-shell{width:100%;max-width:560px;padding:var(--space);flex-direction:column;flex:1;margin:0 auto;display:flex}.btn{border-radius:var(--radius-sm);letter-spacing:.06em;color:var(--color-on-primary);background:var(--color-primary);border:none;padding:14px 20px;font-size:1rem;font-weight:700;transition:filter .15s}.btn:hover{filter:brightness(1.08)}.btn:active{filter:brightness(.95)}.btn--block{width:100%}.btn--lg{padding:18px 24px;font-size:1.15rem}.btn--ghost{background:var(--color-surface-2);color:var(--color-on-bg)}.btn--danger{color:#fff;background:#ef5350}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--space);margin-bottom:var(--space);box-shadow:0 1px 3px #0000000f}.card__title{text-transform:uppercase;color:var(--color-muted);margin-bottom:var(--space-sm);font-size:.85rem}.card__header{align-items:center;gap:var(--space-sm);margin-bottom:var(--space-sm);display:flex}.card__header .card__title{margin-bottom:0}.help-btn{background:var(--color-surface-2);width:22px;height:22px;color:var(--color-accent);border:none;border-radius:50%;flex:none;place-items:center;font-size:.8rem;font-weight:700;line-height:1;display:grid}.help-btn[aria-expanded=true]{background:var(--color-primary);color:var(--color-on-primary)}.help-overlay{z-index:10;padding:var(--space);background:#00000073;place-items:center;display:grid;position:fixed;inset:0}.help-dialog{background:var(--color-surface);border-radius:var(--radius-md);width:100%;max-width:360px;padding:var(--space);box-shadow:0 8px 30px #00000040}.help-dialog__header{justify-content:space-between;align-items:center;gap:var(--space-sm);margin-bottom:var(--space-sm);display:flex}.help-dialog__title{color:var(--color-accent);font-size:1rem}.help-dialog__close{background:var(--color-surface-2);width:32px;height:32px;color:var(--color-on-bg);border:none;border-radius:50%;flex:none;place-items:center;font-size:1.4rem;line-height:1;display:grid}.control{justify-content:space-between;align-items:center;gap:12px;padding:8px 0;display:flex}.control+.control{border-top:1px solid var(--color-border)}.control--disabled{opacity:.4}.control__label{font-size:1rem}.preset-select{width:100%;color:var(--color-on-bg);background:var(--color-surface-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:12px 14px;font-size:1rem}.stepper{align-items:center;gap:12px;display:flex}.stepper__btn{background:var(--color-surface-2);width:40px;height:40px;color:var(--color-on-bg);border:none;border-radius:50%;place-items:center;font-size:1.4rem;font-weight:700;display:grid}.stepper__btn:disabled{background:var(--color-surface-2);color:var(--color-muted);opacity:.55;cursor:not-allowed}.stepper__readout{justify-content:center;align-items:baseline;gap:4px;min-width:5ch;display:inline-flex}.stepper__value{text-align:center;font-variant-numeric:tabular-nums;font-size:1.25rem;font-weight:700}.stepper__unit{color:var(--color-muted);font-size:.8rem;font-weight:600}.summary{color:var(--color-muted);text-align:center;margin-bottom:var(--space);font-size:.9rem}.info{color:var(--color-muted);font-size:.9rem;line-height:1.5}.link-btn{color:var(--color-accent);background:0 0;border:none;padding:0;font-weight:600}.timer{text-align:center;justify-content:space-between;align-items:center;gap:var(--space);flex-direction:column;flex:1;display:flex}.timer__counters{font-variant-numeric:tabular-nums;gap:32px;display:flex}.timer__counter-label{color:var(--color-muted);text-transform:uppercase;font-size:.75rem;display:block}.timer__counter-value{font-size:1.5rem;font-weight:700}.ring{aspect-ratio:1;border-radius:50%;place-items:center;width:min(70vw,280px);display:grid;position:relative}.ring__svg{width:100%;height:100%;position:absolute;inset:0;transform:rotate(-90deg)}.ring__track{fill:none;stroke:var(--color-surface-2);stroke-width:8px}.ring__progress{fill:none;stroke-width:8px;stroke-linecap:round;transition:stroke-dashoffset .95s linear}.ring__inner{flex-direction:column;gap:6px;display:flex}.ring__stage{letter-spacing:.1em;font-size:1.1rem;font-weight:700}.ring__seconds{font-variant-numeric:tabular-nums;font-size:3.5rem;font-weight:800;line-height:1}.stage--work{--stage-color:var(--color-work)}.stage--rest{--stage-color:var(--color-rest)}.stage--countdown{--stage-color:var(--color-countdown)}.stage--neutral{--stage-color:var(--color-neutral)}.ring__progress{stroke:var(--stage-color,var(--color-primary))}.ring__stage{color:var(--stage-color,var(--color-primary))}.timer__controls{gap:var(--space-sm);width:100%;display:flex}.timer__controls .btn{flex:1}.done{text-align:center;align-items:center;gap:var(--space);flex-direction:column;flex:1;justify-content:center;display:flex}.done__emoji{font-size:4rem}.app-header{justify-content:center;align-items:center;gap:var(--space-sm);margin-bottom:var(--space);display:flex}.app-header h1{color:var(--color-accent);font-size:1.3rem}.app-header__bell{flex:none;width:auto;height:1.9rem}