:root {
  --bg: #101014;
  --card: #191920;
  --card2: #212129;
  --line: #2b2b34;
  --text: #ececf1;
  --muted: #8c8c98;
  --faint: #6a6a76;
  --acc: #4cd3a5;
  --acc-dim: rgba(76, 211, 165, .13);
  --amber: #efa13b;
  --red: #e0625f;
  --blue: #79a9ea;
}
* { box-sizing: border-box; margin: 0; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  min-height: 100dvh;
}
main {
  max-width: 620px;
  margin: 0 auto;
  padding: 14px 16px calc(40px + env(safe-area-inset-bottom));
}
h1 { font-size: 21px; font-weight: 600; }
a { color: var(--blue); text-decoration: none; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.pad { padding: 6px 2px; }
.subsec { margin-bottom: 12px; }
.empty { color: var(--faint); padding: 30px 0; text-align: center; }
code {
  background: var(--card2); border-radius: 5px; padding: 1px 5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .88em;
}

/* ---- encabezado ---- */
.top {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 10px 16px calc(10px + env(safe-area-inset-top, 0px));
  padding-top: max(10px, env(safe-area-inset-top));
  background: rgba(16, 16, 20, .93);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}
.brand {
  display: flex; align-items: center; gap: 7px;
  color: var(--acc); font-weight: 600; font-size: 17px; letter-spacing: .01em;
}
.brand .mark { width: 22px; height: 22px; flex-shrink: 0; }
.topnav { display: flex; gap: 4px; }
.topnav a {
  color: var(--muted); font-size: 14px; padding: 6px 9px; border-radius: 9px;
  display: flex; align-items: center; gap: 5px;
}
.topnav a.on { color: var(--acc); background: var(--acc-dim); }
.badge {
  background: var(--red); color: #1a0a0a; font-size: 11px; font-weight: 700;
  border-radius: 999px; min-width: 17px; height: 17px; padding: 0 5px;
  display: inline-flex; align-items: center; justify-content: center;
}

/* ---- pestañas de secciones ---- */
.tabs {
  display: flex; gap: 6px; margin: 2px 0 14px;
  overflow-x: auto; scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tabs a {
  flex: 1 0 auto; min-width: 0; text-align: center; white-space: nowrap;
  padding: 9px 14px; border-radius: 11px;
  background: var(--card); border: 1px solid var(--line);
  color: var(--muted); font-size: 14px; font-weight: 600;
}
.tabs a.on { background: var(--acc); border-color: var(--acc); color: #06231a; }
.tabs a b { font-weight: 700; opacity: .65; font-size: 12px; }
.tabs a:active { transform: scale(.98); }

/* ---- alta rápida ---- */
.add { margin-bottom: 16px; }
.addrow { display: flex; gap: 8px; }
.addrow input { flex: 1; min-width: 0; }
input[type="text"], input[type="password"], input[type="date"], input[type="search"],
select, textarea {
  background: var(--card2); border: 1px solid var(--line); border-radius: 11px;
  color: var(--text); font: inherit; font-size: 16px; padding: 11px 13px; width: 100%;
}
textarea { resize: vertical; line-height: 1.45; }
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--acc); outline-offset: 1px; border-color: transparent;
}
.extra { margin-top: 8px; }
.extra > summary {
  color: var(--faint); font-size: 13px; cursor: pointer;
  padding: 4px 2px; width: fit-content;
}
.extra[open] > summary { color: var(--muted); }
.extra textarea { margin-bottom: 8px; }
.field { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); }
.check { display: flex; align-items: center; gap: 8px; font-size: 15px; color: var(--text); }
.check input { width: 20px; height: 20px; accent-color: var(--acc); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

/* ---- botones ---- */
.btn {
  background: var(--card2); border: 1px solid var(--line); border-radius: 11px;
  color: var(--text); font-size: 15px; padding: 11px 16px; cursor: pointer;
  -webkit-tap-highlight-color: transparent; white-space: nowrap;
}
.btn:active { transform: scale(.98); }
.btn.primary { background: var(--acc); border-color: var(--acc); color: #06231a; font-weight: 600; }
.btn.danger { background: transparent; border-color: var(--red); color: var(--red); }
.btn:disabled { opacity: .5; }
.inline { display: inline; }
.iconbtn {
  background: var(--card2); border: 1px solid var(--line); border-radius: 9px;
  color: var(--muted); font-size: 15px; line-height: 1; padding: 7px 10px; cursor: pointer;
}
.logout { margin-top: 30px; text-align: center; }
.export { margin: 14px 0 4px; }

/* ---- lista de tareas ---- */
.tasks { list-style: none; padding: 0; }
.tasks li.task {
  display: flex; gap: 11px; align-items: flex-start;
  padding: 12px 2px; border-bottom: 1px solid var(--line);
}
.tasks li.task:last-child { border-bottom: 0; }
.tasks .body { flex: 1; min-width: 0; }
.tasks .title {
  display: block; color: var(--text); word-break: break-word;
  line-height: 1.35;
}
.tasks .pinmark { color: var(--amber); font-size: 12px; }
.tasks li.isdone .title { color: var(--muted); text-decoration: line-through; }
.meta {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  margin-top: 3px; font-size: 12.5px; color: var(--faint);
}
.meta .ok { color: var(--acc); }
.meta .tag {
  background: var(--card2); border-radius: 999px; padding: 1px 8px; color: var(--muted);
}
.tick {
  background: none; border: 1.5px solid var(--muted); border-radius: 50%;
  width: 26px; height: 26px; flex-shrink: 0; color: transparent;
  font-size: 14px; line-height: 1; cursor: pointer; padding: 0; margin-top: 1px;
  -webkit-tap-highlight-color: transparent;
}
.tick.on { border-color: var(--acc); color: var(--acc); }
.tick.big { width: 32px; height: 32px; font-size: 17px; }
li.queued { opacity: .72; }
li.offdone .title { text-decoration: line-through; color: var(--muted); }
.donebox { margin-top: 20px; }
.donebox > summary, details.notes > summary {
  color: var(--faint); font-size: 13px; cursor: pointer; padding: 4px 0;
  width: fit-content;
}
details.notes { margin-top: 4px; }
details.notes > summary::marker { color: var(--faint); }

/* ---- notas con formato ---- */
.notebody { font-size: 14.5px; color: var(--text); }
.notebody p { margin: 5px 0; word-break: break-word; }
.notebody ul, .notebody ol { margin: 5px 0; padding-left: 22px; }
.notebody li { margin: 3px 0; }
.notebody ul.checks { list-style: none; padding-left: 0; }
.notebody ul.checks li {
  display: flex; align-items: flex-start; gap: 8px;
}
.notebody ul.checks .box {
  background: none; border: 1.4px solid var(--muted); border-radius: 6px;
  width: 21px; height: 21px; flex-shrink: 0; color: transparent;
  font-size: 12px; line-height: 1; cursor: pointer; padding: 0; margin-top: 1px;
  display: inline-flex; align-items: center; justify-content: center;
  -webkit-tap-highlight-color: transparent;
}
.notebody ul.checks li.done .box { border-color: var(--acc); color: var(--acc); }
.notebody ul.checks li.done > span { color: var(--muted); text-decoration: line-through; }
.notebody a { word-break: break-all; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 13px;
  padding: 12px 14px; margin: 12px 0;
}

/* ---- detalle de tarea ---- */
.crumb { font-size: 14px; margin-bottom: 10px; }
.crumb a { color: var(--muted); }
.head { display: flex; gap: 11px; align-items: flex-start; }
.tasktitle { font-size: 20px; font-weight: 600; word-break: break-word; flex: 1; }
.tasktitle.isdone { color: var(--muted); text-decoration: line-through; }
.head + .meta { margin: 8px 0 4px 43px; }
.stamps { margin: 14px 0 4px; font-size: 13px; color: var(--faint); }
.stamps .ok { color: var(--acc); }
.editbox { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 12px; }
.editbox > summary { color: var(--muted); font-size: 14px; cursor: pointer; padding: 4px 0; }
.detail { display: flex; flex-direction: column; gap: 12px; margin: 10px 0; }
.danger-zone { margin-top: 22px; text-align: center; }

/* ---- encabezados de sección ---- */
.sec { font-size: 14px; font-weight: 600; margin: 20px 0 2px; color: var(--muted); }

/* ---- todas: una tarjeta por sección; en el celular van una tras otra y en
   pantalla grande se acomodan en columnas ---- */
.board { display: grid; gap: 12px; grid-template-columns: 1fr; }
.board .col {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 4px 14px 8px;
}
.colhead {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 10px 0 6px; border-bottom: 1px solid var(--line); margin-bottom: 2px;
  font-size: 13px; font-weight: 600; letter-spacing: .05em; text-transform: uppercase;
}
.colhead a { color: var(--acc); }
.colhead .n {
  background: var(--card2); color: var(--muted); border-radius: 999px;
  padding: 1px 9px; font-size: 12px; font-weight: 600; letter-spacing: 0;
}
.board .tasks li.task { padding: 11px 0; }
.board .empty.small { padding: 14px 0; font-size: 13px; }

/* ---- búsqueda ---- */
.searchbar { display: flex; gap: 8px; margin: 12px 0 16px; }
.searchbar input { flex: 1; min-width: 0; }

/* ---- ajustes ---- */
.row {
  background: var(--card); border: 1px solid var(--line); border-radius: 13px;
  padding: 12px 14px; margin: 9px 0;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  flex-wrap: wrap;
}
.row > div:first-child { flex: 1; min-width: 120px; }
.arrows { display: flex; gap: 6px; }
details summary { cursor: pointer; }
.row details, .add-section { width: 100%; }
.row details > summary, .add-section > summary {
  color: var(--faint); font-size: 13px; padding: 4px 0; width: fit-content;
}
.edit { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.edit input[type="text"] { flex: 1; min-width: 130px; }

/* ---- barra de sincronización ---- */
#syncbar {
  position: sticky; top: 0; z-index: 20;
  background: #2c2416; color: var(--amber);
  font-size: 13px; text-align: center; padding: 7px 12px;
}

/* ---- login ---- */
.login { display: flex; flex-direction: column; align-items: center; gap: 14px; padding-top: 16vh; }
.login .logo { width: 92px; height: 92px; }
.login h1 { font-size: 23px; letter-spacing: .14em; font-weight: 500; color: var(--acc); }
.login form { display: flex; flex-direction: column; gap: 10px; width: min(300px, 80vw); }
.err { color: var(--red); font-size: 14px; }

/* ---- pantallas grandes: más aire, sin cambiar la lógica ---- */
@media (min-width: 700px) {
  main { padding-top: 20px; }
  main.wide { max-width: 1100px; }
  .tasks li.task { padding: 13px 4px; }
  .tick { width: 24px; height: 24px; }
  .topnav a { font-size: 15px; padding: 6px 12px; }
  /* las columnas se llenan solas según quepan, y cada una crece lo que necesite */
  .board { grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); align-items: start; gap: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}