:root {
  color-scheme: light;
  --bg: #f5f5f3; --surface: #fcfcfb; --surface-2: #efeeea; --line: #dedcd6;
  --text: #0b0b0b; --text-2: #52514e; --muted: #77756f;
  --accent: #2a78d6; --accent-ink: #ffffff; --track: #d7e6f8;
  --good: #0f7b3f; --warn-bg: #fff4d6; --warn-ink: #6b4a00; --err-bg: #fde6e4; --err-ink: #8a1c12;
  --ok-bg: #e3f3e8; --ok-ink: #0f5a30;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #121211; --surface: #1a1a19; --surface-2: #242422; --line: #34332f;
    --text: #f0efec; --text-2: #c3c2b7; --muted: #9a998f;
    --accent: #3987e5; --accent-ink: #ffffff; --track: #23364d;
    --good: #4cc27c; --warn-bg: #3a2f10; --warn-ink: #f3d68a; --err-bg: #3d1a17; --err-ink: #f5b3ab;
    --ok-bg: #173323; --ok-ink: #a6e3bd;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121211; --surface: #1a1a19; --surface-2: #242422; --line: #34332f;
  --text: #f0efec; --text-2: #c3c2b7; --muted: #9a998f;
  --accent: #3987e5; --accent-ink: #ffffff; --track: #23364d;
  --good: #4cc27c; --warn-bg: #3a2f10; --warn-ink: #f3d68a; --err-bg: #3d1a17; --err-ink: #f5b3ab;
  --ok-bg: #173323; --ok-ink: #a6e3bd;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
h1 { font-size: 1.45rem; margin: 0 0 .25rem; }
h2 { font-size: 1.1rem; margin: 1.6rem 0 .6rem; }
h3 { font-size: 1rem; margin: 1.2rem 0 .5rem; }
.sub { color: var(--text-2); margin: 0 0 1rem; font-size: .93rem; }
.muted { color: var(--muted); }

/* barra superior */
.top { background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.top-in { max-width: 1180px; margin: 0 auto; padding: 0 16px; display: flex; align-items: center; gap: 12px;
  min-height: 54px; flex-wrap: wrap; }
.marca { font-weight: 700; letter-spacing: .02em; margin-right: 8px; color: var(--text); text-decoration: none; }
nav { display: flex; gap: 2px; overflow-x: auto; flex: 1; scrollbar-width: none; }
nav a { padding: 8px 12px; border-radius: 8px; color: var(--text-2); text-decoration: none; white-space: nowrap;
  font-size: .95rem; }
nav a.on { background: var(--surface-2); color: var(--text); font-weight: 600; }
nav a .pronto { font-size: .7rem; color: var(--muted); margin-left: 4px; }
.salir { margin-left: auto; }

main { max-width: 1180px; margin: 0 auto; padding: 20px 16px 60px; }

/* botones y formularios */
button, .btn {
  font: inherit; font-size: .95rem; border: 1px solid var(--line); background: var(--surface); color: var(--text);
  padding: 9px 14px; border-radius: 8px; cursor: pointer; text-decoration: none; display: inline-block;
}
.btn-p { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn-link { border: 0; background: none; color: var(--text-2); padding: 8px; }
button:focus-visible, .btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible,
nav a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
label { display: block; font-size: .88rem; color: var(--text-2); margin: 0 0 4px; }
input, select, textarea {
  font: inherit; width: 100%; padding: 9px 10px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--surface); color: var(--text);
}
input[type=checkbox] { width: auto; margin-right: 6px; }
.campo { margin-bottom: 12px; }
.fila { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.fila > .campo { flex: 1 1 160px; }
.check { display: flex; align-items: center; color: var(--text); font-size: .95rem; }

/* tarjetas */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.grid-2 { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.tile .k { color: var(--text-2); font-size: .85rem; }
.tile .v { font-size: 2rem; font-weight: 700; line-height: 1.1; margin-top: 4px; font-variant-numeric: tabular-nums; }
.tile .n { color: var(--muted); font-size: .82rem; margin-top: 2px; }

/* medidor de avance */
.meter { margin: 10px 0 2px; }
.meter .lbl { display: flex; justify-content: space-between; font-size: .88rem; color: var(--text-2); gap: 8px; }
.meter .lbl b { color: var(--text); font-variant-numeric: tabular-nums; }
.track { height: 8px; background: var(--track); border-radius: 4px; margin-top: 5px; overflow: hidden; }
.track i { display: block; height: 100%; background: var(--accent); border-radius: 4px; }
.marca-ritmo { font-size: .78rem; color: var(--muted); margin-top: 3px; }

/* avisos */
.aviso { border-radius: 10px; padding: 10px 14px; margin: 0 0 14px; font-size: .95rem; }
.aviso.ok { background: var(--ok-bg); color: var(--ok-ink); }
.aviso.error { background: var(--err-bg); color: var(--err-ink); }
.aviso.warn { background: var(--warn-bg); color: var(--warn-ink); }
.alertas { list-style: none; margin: 0; padding: 0; }
.alertas li { padding: 8px 0; border-bottom: 1px solid var(--line); font-size: .95rem; }
.alertas li:last-child { border-bottom: 0; }
.alertas li::before { content: "⚠ "; color: var(--warn-ink); }

/* tablas */
.tabla-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: .9rem; font-variant-numeric: tabular-nums; }
th, td { padding: 7px 10px; text-align: right; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { background: var(--surface-2); color: var(--text-2); font-weight: 600; font-size: .8rem; position: sticky; top: 0; }
th:first-child, td:first-child { text-align: left; position: sticky; left: 0; background: inherit; }
td:first-child { background: var(--surface); }
tr.total td { font-weight: 700; background: var(--surface-2); }
td.izq, th.izq { text-align: left; }
td.cero { color: var(--muted); }
.cab { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.acciones { display: flex; gap: 8px; flex-wrap: wrap; }
.etq { display: inline-block; font-size: .75rem; padding: 2px 8px; border-radius: 99px; background: var(--surface-2);
  color: var(--text-2); }
.etq.semanal { background: var(--track); color: var(--text); }

/* login */
.login { max-width: 360px; margin: 12vh auto 0; }

@media (max-width: 600px) {
  .tile .v { font-size: 1.6rem; }
  .card.tile { padding: 12px; }
  h1 { font-size: 1.25rem; }
  .salir { margin-left: 0; }
}