/* Estudia con Ed: temporizador Pomodoro. Se apoya en guia-mkt.css,
   calculadora-notas.css (encabezado, botones, Ed) y ed-app.css. */
.po-grid { display:grid; grid-template-columns:minmax(0,1.1fr) minmax(0,1fr); gap:20px; align-items:start; }
.po-reloj-card { position:relative; overflow:hidden; border-radius:24px; padding:22px; text-align:center;
  background:var(--calc-brand-tint); background:color-mix(in srgb, var(--ed) 16%, var(--card-surface));
  border:2px solid color-mix(in srgb, var(--ed) 50%, transparent); transition:background 250ms ease,border-color 250ms ease; }
.po-anillo { position:relative; width:300px; height:300px; margin:0 auto; }
.po-anillo svg.ring { position:absolute; inset:0; width:100%; height:100%; transform:rotate(-90deg); }
.po-anillo .pista { fill:none; stroke:var(--border-subtle); stroke-width:14; }
.po-anillo .arco { fill:none; stroke:var(--ed); stroke-width:14; stroke-linecap:round; transition:stroke-dashoffset 250ms linear,stroke 250ms ease; }
.po-centro { position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center; }
.po-centro .nt-ed { width:118px; height:118px; }
.po-tiempo { margin:6px 0 0; font-size:52px; line-height:56px; font-weight:800; letter-spacing:-1.5px; font-variant-numeric:tabular-nums; color:var(--text-primary); }
.po-fase { margin:0; font-size:13.5px; font-weight:700; color:var(--text-secondary); max-width:220px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.po-ctrl { display:flex; gap:10px; justify-content:center; margin-top:18px; flex-wrap:wrap; }
.po-ctrl .btn-nt.brand { min-width:210px; }
.po-dia { margin-top:18px; }
.po-puntos { display:flex; gap:8px; justify-content:center; flex-wrap:wrap; }
.po-puntos span { width:16px; height:16px; border-radius:50%; border:2px solid var(--border-solid); background:var(--card-surface); }
.po-puntos span.on { background:var(--ed-meterle); border-color:var(--ed-meterle); }
.po-app[data-estado="ya"] .po-puntos span.on { background:var(--ed-ya); border-color:var(--ed-ya); }
.po-hoy { margin:10px 0 0; font-size:14px; font-weight:600; color:var(--text-primary); }
.po-racha { margin:4px 0 0; font-size:13.5px; font-weight:700; color:var(--brand-ink); }
.po-chips { display:flex; flex-wrap:wrap; gap:6px; margin-top:8px; }
.po-chip { font-family:var(--font-roboto); font-size:12.5px; font-weight:600; color:var(--text-secondary); background:var(--card-surface); border:1px solid var(--border-solid); border-radius:var(--radius-pill); padding:6px 11px; cursor:pointer; }
.po-chip:hover { color:var(--text-primary); border-color:var(--text-tertiary); }
.po-personal[hidden] { display:none; }
.po-aviso { margin-top:16px; padding:14px 16px; border-radius:16px; background:var(--card-surface); border:1px solid var(--border-subtle); text-align:left; }
.po-aviso[hidden] { display:none; }
.po-aviso strong { display:block; font-size:14.5px; color:var(--text-primary); }
.po-aviso p { margin:4px 0 10px; font-size:13px; line-height:19px; color:var(--text-secondary); }
.po-reto { margin:0 0 16px; padding:14px 16px; border-radius:16px; background:var(--calc-brand-tint); border:1px solid var(--calc-brand-line); display:flex; gap:12px; align-items:center; justify-content:space-between; flex-wrap:wrap; }
.po-reto[hidden] { display:none; }
.po-reto p { margin:0; font-size:14.5px; font-weight:600; color:var(--text-primary); }
.po-share[hidden] { display:none; }
.po-share .nt-in input { text-align:left; font-size:15px; font-weight:600; padding:0 12px; height:44px; }
.po-avisar { background:none; border:0; padding:0; margin-top:14px; font-family:var(--font-roboto); font-size:13px; font-weight:600; color:var(--text-secondary); cursor:pointer; }
.po-sonido { display:flex; gap:8px; align-items:center; justify-content:center; margin-top:14px; font-size:13px; font-weight:600; color:var(--text-secondary); }
.po-sonido select { font-family:var(--font-roboto); font-size:13px; font-weight:600; color:var(--text-primary); background:var(--card-surface); border:1px solid var(--border-solid); border-radius:var(--radius-pill); padding:6px 10px; }
.po-sonido .po-avisar { margin-top:0; }
.po-atajo { margin-top:10px; font-size:12px; color:var(--text-tertiary); }
html.ed-standalone .po-atajo { display:none; }
.po-activa { margin:12px auto 0; max-width:320px; font-size:13.5px; font-weight:600; color:var(--text-primary); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.po-activa[hidden] { display:none; }
.po-tarea-form { display:grid; grid-template-columns:minmax(0,1fr) 78px auto; gap:8px; align-items:center; }
.po-tarea-form .nt-sel { margin-top:0; height:48px; padding:0 8px; }
.po-tarea-form .btn-nt { height:48px; }
.po-tareas { list-style:none; margin:10px 0 0; padding:0; }
.po-tarea { display:grid; grid-template-columns:28px minmax(0,1fr) auto 32px 28px; gap:8px; align-items:center; padding:10px 10px; margin-bottom:6px; border-radius:14px; border:1px solid var(--border-subtle); background:var(--card-surface); }
.po-tarea.activa { border-color:var(--calc-brand-line); background:var(--calc-brand-tint); }
.po-tarea.hecha { grid-template-columns:28px minmax(0,1fr) auto 28px; opacity:.7; }
.po-tarea.hecha .po-tarea-t { text-decoration:line-through; color:var(--text-tertiary); }
.po-tarea-t { font-size:14.5px; line-height:20px; color:var(--text-primary); overflow-wrap:anywhere; }
.po-tarea-n { font-size:12.5px; font-weight:600; color:var(--text-secondary); white-space:nowrap; font-variant-numeric:tabular-nums; }
.po-check { width:24px; height:24px; border-radius:8px; border:2px solid var(--border-solid); background:var(--card-surface); cursor:pointer; padding:0; position:relative; }
.po-check[aria-pressed="true"] { background:var(--green); border-color:var(--green); }
.po-check[aria-pressed="true"]::after { content:"✓"; position:absolute; inset:0; display:flex; align-items:center; justify-content:center; font-size:14px; font-weight:800; color:#08090a; }
.po-tarea-play, .po-tarea-x { width:28px; height:28px; border:0; border-radius:8px; background:none; cursor:pointer; color:var(--text-tertiary); font-size:12px; }
.po-tarea-play { color:var(--brand-ink); font-size:13px; }
.po-tarea-play:hover, .po-tarea-x:hover { background:var(--surface-raised); color:var(--text-primary); }
.po-limpiar { margin-top:4px; background:none; border:0; padding:0; font-family:var(--font-roboto); font-size:12.5px; color:var(--text-tertiary); text-decoration:underline; cursor:pointer; }
.po-limpiar[hidden] { display:none; }
@media (max-width:1040px) { .po-grid { grid-template-columns:minmax(0,1fr); } }
@media (max-width:760px) {
    .po-anillo { width:260px; height:260px; }
    .po-centro .nt-ed { width:100px; height:100px; }
    .po-tiempo { font-size:46px; line-height:50px; }
    .po-ctrl .btn-nt.brand { min-width:0; flex:1 1 100%; }
}