:root {
      --ck-bg: var(--elev-surface, #111115);
      --ck-card: #1a1a22;
      --ck-card-hover: #20202a;
      --ck-border: rgba(255,255,255,0.12);
      --ck-text: #f8fafc;
      --ck-muted: rgba(255,255,255,0.70);
      --ck-faint: rgba(255,255,255,0.55);
      --ck-track: rgba(255,255,255,0.10);
      --ck-ok: #34d399;
      --ck-ok-fill: #10b981;
      --ck-ok-bg: #112522;           /* 12% esmeralda sobre #111115, opaco */
      --ck-ok-border: rgba(52,211,153,0.35);
      --ck-warn: #fbbf24;
      --ck-warn-bg: #2c2214;         /* 12% ámbar sobre #111115, opaco */
      --ck-warn-border: rgba(245,158,11,0.35);
      --ck-warn-fill: #f59e0b;
      --ck-warn-ink: #111115;
      --ck-focus: #93c5fd;
      --ck-scrim: rgba(0,0,0,0.62);
    }
    html.light-mode {
      --ck-bg: #ffffff;
      --ck-card: #f8fafc;
      --ck-card-hover: #f1f5f9;
      --ck-border: #e2e8f0;
      --ck-text: #0f172a;
      --ck-muted: #475569;
      --ck-faint: #64748b;
      --ck-track: #e2e8f0;
      --ck-ok: #047857;
      --ck-ok-fill: #059669;
      --ck-ok-bg: #ecfdf5;
      --ck-ok-border: #a7f3d0;
      --ck-warn: #92400e;
      --ck-warn-bg: #fef3c7;
      --ck-warn-border: #fcd34d;
      --ck-warn-fill: #f59e0b;
      --ck-warn-ink: #111115;
      --ck-focus: #2563eb;
      --ck-scrim: rgba(15,23,42,0.45);
    }

    /* Hoja: sube desde abajo y ocupa el alto del teléfono; en pantallas
       grandes es una ventana centrada. [hidden] explícito porque esta regla
       sin capa le gana a la utilidad .hidden de Tailwind (CDN en @layer).
       z-index sobre la barra inferior (#bottomNav, 30000): debajo, la barra
       tapaba los últimos puntos y el botón de avisar. */
    .ck-overlay { position: fixed; inset: 0; z-index: 30500; display: flex; align-items: flex-end; justify-content: center; background: var(--ck-scrim); opacity: 0; transition: opacity .22s ease; }
    .ck-overlay[hidden] { display: none; }
    .ck-overlay.ck-open { opacity: 1; }
    .ck-sheet { position: relative; width: 100%; max-width: 560px; height: calc(100dvh - max(env(safe-area-inset-top), 10px) - 8px); display: flex; flex-direction: column; background: var(--ck-bg); color: var(--ck-text); border-radius: 22px 22px 0 0; box-shadow: 0 -10px 40px rgba(0,0,0,0.45); transform: translateY(100%); transition: transform .3s cubic-bezier(.2,.8,.2,1); overflow: hidden; }
    .ck-overlay.ck-open .ck-sheet { transform: none; }
    @media (min-width: 640px) {
      .ck-overlay { align-items: center; padding: 24px; }
      .ck-sheet { height: min(780px, 92dvh); border-radius: 22px; transform: translateY(24px); }
    }
    @media (prefers-reduced-motion: reduce) {
      .ck-overlay, .ck-sheet, .ck-item, .ck-box, .ck-bar > i, .ck-tab-bar > i { transition: none !important; }
    }
    .ck-grab { width: 40px; height: 5px; border-radius: 99px; background: var(--ck-track); margin: 8px auto 0; flex-shrink: 0; }
    .ck-head { display: flex; align-items: flex-start; gap: 12px; padding: 10px 16px 12px 20px; flex-shrink: 0; }
    .ck-head h2 { font-size: 20px; line-height: 1.2; font-weight: 800; margin: 0; letter-spacing: -0.01em; }
    .ck-sub { font-size: 14px; color: var(--ck-muted); margin: 2px 0 0; }
    .ck-close { margin-left: auto; width: 44px; height: 44px; border-radius: 14px; display: inline-flex; align-items: center; justify-content: center; color: var(--ck-muted); background: var(--ck-card); border: 1px solid var(--ck-border); flex-shrink: 0; font-size: 20px; }
    .ck-close:active { transform: scale(.96); }

    /* Pestañas por tramo, con su avance. */
    .ck-tabs { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 6px; padding: 0 16px 12px; flex-shrink: 0; }
    .ck-tabs[hidden] { display: none; }
    .ck-tab { min-height: 64px; padding: 8px 10px 9px; border-radius: 14px; border: 1.5px solid var(--ck-border); background: var(--ck-card); color: var(--ck-muted); text-align: left; display: flex; flex-direction: column; gap: 4px; }
    .ck-tab[aria-selected="true"] { border-color: var(--ck-text); color: var(--ck-text); background: var(--ck-card-hover); }
    .ck-tab-top { display: flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 700; line-height: 1.15; }
    .ck-tab-ahora { font-size: 11px; font-weight: 800; letter-spacing: .02em; padding: 1px 6px; border-radius: 99px; color: var(--ck-warn-ink); background: var(--ck-warn-fill); }
    .ck-tab-n { font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; display: flex; align-items: center; gap: 4px; }
    .ck-tab-n.ck-full { color: var(--ck-ok); }
    .ck-tab-bar, .ck-bar { display: block; height: 4px; border-radius: 99px; background: var(--ck-track); overflow: hidden; }
    .ck-tab-bar > i, .ck-bar > i { display: block; height: 100%; border-radius: inherit; background: var(--ck-ok-fill); transition: width .3s ease; }

    .ck-body { flex: 1; overflow-y: auto; overscroll-behavior: contain; padding: 4px 16px 16px; -webkit-overflow-scrolling: touch; }
    .ck-body:focus { outline: none; }
    .ck-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; font-size: 14px; color: var(--ck-muted); margin: 2px 4px 10px; }
    .ck-meta b { color: var(--ck-text); font-weight: 700; }
    .ck-plazo { display: inline-flex; align-items: center; gap: 5px; }
    .ck-plazo.ck-vencido { color: var(--ck-warn); font-weight: 700; }
    .ck-avance { display: flex; align-items: center; gap: 10px; margin: 0 4px 14px; }
    .ck-avance .ck-bar { flex: 1; height: 8px; }
    .ck-avance span { font-size: 14px; font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }

    .ck-listo { display: flex; align-items: center; gap: 12px; padding: 14px 16px; margin-bottom: 14px; border-radius: 16px; background: var(--ck-ok-bg); border: 1px solid var(--ck-ok-border); }
    .ck-listo i.ck-listo-ic { font-size: 28px; color: var(--ck-ok); flex-shrink: 0; }
    .ck-listo b { display: block; font-size: 16px; }
    .ck-listo p { margin: 1px 0 0; font-size: 14px; color: var(--ck-muted); }
    .ck-seguir { margin-top: 8px; min-height: 44px; padding: 0 14px; border-radius: 12px; display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 700; color: var(--ck-text); background: var(--ck-bg); border: 1px solid var(--ck-border); }

    /* Ítem: la fila entera es la casilla. */
    .ck-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
    .ck-item { display: flex; align-items: stretch; border-radius: 16px; background: var(--ck-card); border: 1px solid var(--ck-border); transition: background-color .2s ease, border-color .2s ease; flex-wrap: wrap; }
    .ck-item.ck-on { background: var(--ck-ok-bg); border-color: var(--ck-ok-border); }
    .ck-check { flex: 1; min-width: 0; min-height: 60px; display: flex; align-items: center; gap: 14px; padding: 10px 6px 10px 14px; text-align: left; color: inherit; background: none; border: 0; border-radius: 16px; -webkit-tap-highlight-color: transparent; }
    .ck-check:active .ck-box { transform: scale(.9); }
    .ck-box { width: 30px; height: 30px; border-radius: 9px; border: 2px solid var(--ck-faint); display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; color: #fff; font-size: 17px; transition: transform .12s ease, background-color .15s ease, border-color .15s ease; }
    .ck-box i { opacity: 0; }
    .ck-on .ck-box { background: var(--ck-ok-fill); border-color: var(--ck-ok-fill); }
    .ck-on .ck-box i { opacity: 1; }
    .ck-txt { display: block; font-size: 16px; line-height: 1.35; font-weight: 600; }
    .ck-on .ck-txt { color: var(--ck-muted); font-weight: 500; }
    .ck-quien { display: flex; align-items: center; gap: 4px; margin-top: 3px; font-size: 13px; font-weight: 600; color: var(--ck-ok); }
    .ck-quien.ck-tarde { color: var(--ck-warn); }
    .ck-falta { width: 52px; min-height: 60px; flex-shrink: 0; display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; color: var(--ck-warn); background: none; border: 0; border-left: 1px solid var(--ck-border); border-radius: 0 16px 16px 0; font-size: 20px; }
    .ck-falta span { font-size: 10px; font-weight: 700; line-height: 1; }
    .ck-falta[aria-expanded="true"] { background: var(--ck-warn-bg); }

    /* Avisar que falta algo: motivos de un toque + detalle opcional. */
    .ck-form { flex-basis: 100%; padding: 12px 14px 14px; border-top: 1px solid var(--ck-border); }
    .ck-form-sola { margin-top: 12px; border: 1px solid var(--ck-warn-border); border-radius: 16px; background: var(--ck-card); }
    .ck-form-t { font-size: 14px; font-weight: 700; margin: 0 0 8px; }
    .ck-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
    .ck-chip { min-height: 40px; padding: 0 14px; border-radius: 99px; font-size: 14px; font-weight: 600; color: var(--ck-text); background: var(--ck-bg); border: 1.5px solid var(--ck-border); }
    .ck-chip[aria-pressed="true"] { border-color: var(--ck-warn-fill); background: var(--ck-warn-bg); color: var(--ck-warn); }
    .ck-input { width: 100%; min-height: 48px; padding: 0 14px; border-radius: 12px; font-size: 16px; color: var(--ck-text); background: var(--ck-bg); border: 1.5px solid var(--ck-border); outline: none; }
    .ck-input::placeholder { color: var(--ck-faint); }
    .ck-input:focus { border-color: var(--ck-warn-fill); }
    .ck-acc { display: flex; gap: 8px; margin-top: 10px; }
    .ck-btn { min-height: 48px; padding: 0 16px; border-radius: 12px; font-size: 15px; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; gap: 6px; }
    .ck-btn-sec { color: var(--ck-muted); background: transparent; border: 1px solid var(--ck-border); }
    .ck-btn-warn { flex: 1; color: var(--ck-warn-ink); background: var(--ck-warn-fill); border: 0; }
    .ck-btn-warn:disabled { opacity: .45; }

    .ck-foot { flex-shrink: 0; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); border-top: 1px solid var(--ck-border); background: var(--ck-bg); }
    .ck-foot .ck-btn { width: 100%; color: var(--ck-warn); background: var(--ck-warn-bg); border: 1px solid var(--ck-warn-border); }
    .ck-vacio { text-align: center; padding: 40px 12px; color: var(--ck-muted); font-size: 15px; }

    .ck-toast { position: absolute; left: 16px; right: 16px; bottom: calc(84px + env(safe-area-inset-bottom)); padding: 12px 16px; border-radius: 14px; font-size: 15px; font-weight: 600; background: var(--ck-text); color: var(--ck-bg); box-shadow: 0 8px 24px rgba(0,0,0,.3); opacity: 0; transform: translateY(8px); transition: opacity .2s ease, transform .2s ease; pointer-events: none; }
    .ck-toast.ck-ver { opacity: 1; transform: none; }
    .ck-toast.ck-error { background: #b91c1c; color: #fff; }

    .ck-overlay :focus-visible, .ck-card :focus-visible, .ck-card:focus-visible { outline: 3px solid var(--ck-focus); outline-offset: 2px; }

    /* Tarjeta en la vista del día: lo pendiente del tramo que toca, a un toque. */
    .ck-card { width: 100%; display: flex; align-items: center; gap: 12px; padding: 12px 14px; margin-bottom: 12px; border-radius: 16px; text-align: left; color: var(--ck-text); background: var(--ck-card); border: 1px solid var(--ck-border); min-height: 64px; }
    .ck-card[hidden] { display: none; }
    .ck-card.ck-card-vencido { background: var(--ck-warn-bg); border-color: var(--ck-warn-border); }
    .ck-card-ic { width: 40px; height: 40px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 20px; color: var(--ck-ok); background: var(--ck-ok-bg); }
    .ck-card-vencido .ck-card-ic { color: var(--ck-warn); background: var(--ck-bg); }
    .ck-card-t { display: block; font-size: 15px; font-weight: 700; line-height: 1.25; }
    .ck-card-s { display: block; font-size: 13px; color: var(--ck-muted); margin-top: 2px; }
    .ck-card-vencido .ck-card-s { color: var(--ck-warn); font-weight: 600; }
    .ck-card .ck-bar { margin-top: 7px; height: 5px; }
    .ck-card-go { font-size: 18px; color: var(--ck-faint); flex-shrink: 0; }
    .ck-sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }