:root {
  --bg: #faf7f3;
  --card: #ffffff;
  --ink: #1f1d1b;
  --muted: #7a726b;
  --line: #e6dfd6;
  --accent: #b5452a;
  --done: #3f7d4e;
  --chip: #f1ebe3;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #161412;
    --card: #1f1c19;
    --ink: #f1ece6;
    --muted: #958c83;
    --line: #342f2a;
    --accent: #e0664a;
    --done: #6bbf82;
    --chip: #262220;
  }
}

:root[data-theme="dark"] {
  --bg: #161412;
  --card: #1f1c19;
  --ink: #f1ece6;
  --muted: #958c83;
  --line: #342f2a;
  --accent: #e0664a;
  --done: #6bbf82;
  --chip: #262220;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

[hidden] { display: none !important; }

main { padding: 16px; max-width: 1100px; margin: 0 auto; }

h1 { font-size: 22px; margin: 0; }
h2 { font-size: 17px; margin: 0; }
h3 { font-size: 15px; margin: 0 0 8px; }

.top {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--card);
  position: sticky; top: 0; z-index: 2;
}
.brand { font-weight: 700; }
.brand span { color: var(--muted); font-weight: 400; }
.top-right { display: flex; gap: 12px; align-items: center; font-size: 14px; }

button, input, select, textarea {
  font: inherit; color: var(--ink); background: var(--card);
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px;
}
button { background: var(--accent); color: #fff; border-color: var(--accent); cursor: pointer; }
button.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
button.small-btn { padding: 4px 10px; font-size: 13px; margin-top: 6px; }
input, select, textarea { width: 100%; }
textarea { resize: vertical; }
label { display: grid; gap: 4px; font-size: 14px; color: var(--muted); margin-bottom: 10px; }
.checks { display: flex; gap: 14px; color: var(--ink); }
.checks label { display: inline-flex; align-items: center; gap: 6px; margin: 0; }
.checks input { width: auto; }

.muted { color: var(--muted); }
.small { font-size: 13px; }
.error { color: var(--accent); min-height: 1em; margin: 6px 0 0; }

/* login */
.login { max-width: 360px; margin: 48px auto; }
.login form { display: grid; gap: 4px; margin-top: 16px; }
.login button { margin-top: 8px; padding: 10px; }

/* semanas */
.weeks {
  display: flex; gap: 8px; overflow-x: auto; padding-bottom: 8px; margin-bottom: 12px;
  -webkit-overflow-scrolling: touch;
}
.weeks button {
  white-space: nowrap; background: var(--card); color: var(--ink); border-color: var(--line);
  padding: 6px 12px; border-radius: 999px; font-size: 14px;
}
.weeks button[aria-current="true"] { background: var(--accent); color: #fff; border-color: var(--accent); }
.weeks button .dot { color: var(--done); }

.week-head { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }

/* carriles */
.lanes { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; }
.lane { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; min-width: 0; }
.lane-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.lane-head .chip { background: var(--chip); border-radius: 999px; padding: 2px 10px; font-size: 13px; color: var(--muted); }
.lane-add { display: flex; gap: 6px; margin-top: 10px; }
.lane-add input { font-size: 14px; padding: 6px 8px; }
.lane-add button { padding: 6px 10px; white-space: nowrap; }
.lane-empty { color: var(--muted); font-size: 14px; margin: 4px 0; }

.task { display: flex; gap: 10px; padding: 8px 0; border-top: 1px solid var(--line); }
.task:first-of-type { border-top: 0; }
.task .check {
  flex: 0 0 22px; height: 22px; width: 22px; padding: 0; margin-top: 2px;
  background: var(--card); border: 2px solid var(--muted); border-radius: 6px;
}
.task.done .check { background: var(--done); border-color: var(--done); }
.task.done .check::after { content: "✓"; color: #fff; display: block; text-align: center; line-height: 18px; font-size: 14px; }
.task-body { min-width: 0; flex: 1; }
.task-title { margin: 0; overflow-wrap: anywhere; }
.task.done .task-title { text-decoration: line-through; color: var(--muted); }
.task-meta { margin: 2px 0 0; }
.note summary { cursor: pointer; font-size: 13px; color: var(--muted); margin-top: 4px; }
.note textarea { margin-top: 6px; font-size: 14px; }

/* bloques */
.block { margin-top: 20px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.block > summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: baseline; }
.block > summary::-webkit-details-marker { display: none; }
.block > summary::after { content: "▾"; color: var(--muted); margin-left: 8px; }
.block:not([open]) > summary::after { content: "▸"; }
.block[open] > summary { margin-bottom: 10px; }

.decisions, .meetings { list-style: none; padding: 0; margin: 0; }
.decision { border-top: 1px solid var(--line); padding: 12px 0; }
.decision:first-child { border-top: 0; }
.decision-head { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.decision-head strong { overflow-wrap: anywhere; }
.badge { font-size: 12px; border-radius: 999px; padding: 2px 8px; background: var(--chip); color: var(--muted); }
.badge.open { color: var(--accent); }
.badge.closed { color: var(--done); }
.answers { display: grid; gap: 8px; margin-top: 8px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.answers label { margin: 0; }
.answers small { display: block; }
.decision-actions { display: flex; gap: 8px; margin-top: 6px; }
.decision-actions button { padding: 4px 10px; font-size: 13px; }

.meeting-form { border-bottom: 1px solid var(--line); padding-bottom: 14px; margin-bottom: 14px; }
.row { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.meeting-form button[type="submit"] { margin-top: 4px; }

.meetings > li { border-top: 1px solid var(--line); padding: 12px 0; }
.meetings > li:first-child { border-top: 0; }
.meetings ul { margin: 4px 0 0 18px; padding: 0; }
.meetings pre { white-space: pre-wrap; font: inherit; margin: 6px 0 0; }

@media (max-width: 480px) {
  main { padding: 16px; }
  .top { padding: 10px 16px; }
  .block { padding: 12px; }
}