:root {
  --ink: #172A3A; --teal: #217C87; --teal-strong: #1A6570; --wash: #E4F0F1;
  --paper: #F5F8F8; --surface: #FFFFFF; --line: #D8E2E5; --text: #22333D; --muted: #5B6C75;
  --ok: #2F7D4F; --ok-bg: #E2F1E7; --bad: #B23B32; --bad-bg: #F8E0DD;
  --display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
  color-scheme: light;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--text); font-family: var(--body); font-size: 15px; line-height: 1.55; }
h1, h2, h3 { font-family: var(--display); margin: 0 0 12px; line-height: 1.2; }
a { color: var(--teal-strong); }
:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }
.muted { color: var(--muted); }
.centro { min-height: 100vh; display: grid; place-items: center; padding: 24px 16px; }
.tarjeta { background: var(--surface); border: 1px solid var(--line); padding: 28px; width: 100%; max-width: 440px; display: grid; gap: 14px; }
.btn { display: inline-flex; justify-content: center; align-items: center; gap: 8px; background: var(--teal); color: #fff; border: 0; padding: 10px 18px; border-radius: 4px; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn:hover { background: var(--teal-strong); }
.btn-secundario { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn-secundario:hover { background: var(--wash); }
.alerta { background: var(--bad-bg); color: var(--bad); padding: 10px 14px; border-radius: 4px; }
.aviso-ok { background: var(--ok-bg); color: var(--ok); padding: 10px 14px; border-radius: 4px; }
.campo { display: grid; gap: 6px; }
.campo label { font-weight: 600; font-size: 0.9rem; }
.campo input, .campo select { font: inherit; padding: 9px 11px; border: 1px solid var(--line); border-radius: 4px; background: var(--paper); }
.codigo-input { font-family: var(--mono); font-size: 1.4rem; letter-spacing: 0.3em; text-align: center; }
.codigos { font-family: var(--mono); display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px 18px; background: var(--wash); padding: 14px; list-style: none; margin: 0; }
.tabla { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--line); }
.tabla th, .tabla td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 0.92rem; }
.tabla th { font-family: var(--mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); background: var(--paper); }
.app { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.menu { background: var(--ink); color: #fff; padding: 20px 14px; display: grid; align-content: start; gap: 4px; }
.menu a { color: #B7C8CE; text-decoration: none; padding: 8px 10px; border-radius: 4px; }
.menu a[aria-current="page"], .menu a:hover { color: #fff; background: rgba(93,184,194,0.16); }
.menu .marca { font-family: var(--display); font-weight: 700; letter-spacing: 0.04em; color: #fff; padding: 0 10px 14px; }
.menu .grupo { font-family: var(--mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.1em; color: #8FA6AE; padding: 14px 10px 4px; }
.contenido { padding: 24px; display: grid; gap: 18px; align-content: start; min-width: 0; }
.barra { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.fila-form { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; }
.permisos { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 6px 16px; }
.ancho { max-width: none; }
@media (max-width: 760px) { .app { grid-template-columns: 1fr; } .codigos { grid-template-columns: 1fr; } }

/* Entrega 2: tablero, fichas y bitácora */
.resumen { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.resumen div { background: var(--surface); padding: 14px 16px; display: grid; gap: 2px; }
.resumen strong { font-family: var(--display); font-size: 1.6rem; }
.resumen span { color: var(--muted); font-size: 0.85rem; }
.tablero { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(230px, 1fr); gap: 12px; overflow-x: auto; padding-bottom: 8px; }
.columna { background: var(--paper); border: 1px solid var(--line); border-radius: 6px; padding: 10px; display: grid; gap: 8px; align-content: start; min-height: 220px; }
.columna h2 { font-size: 0.95rem; margin: 0 0 4px; display: flex; justify-content: space-between; }
.columna.sobre { border-color: var(--teal); background: var(--wash); }
.tarjeta-int { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--teal); border-radius: 4px; padding: 10px 12px; display: grid; gap: 4px; font-size: 0.88rem; }
.tarjeta-int[draggable="true"] { cursor: grab; }
.tarjeta-int.arrastrando { opacity: 0.5; }
.tarjeta-int.alerta { border-left-color: #B7791F; }
.tarjeta-int .titulo { font-weight: 600; color: var(--text); text-decoration: none; }
.tarjeta-int .casa { font-family: var(--mono); font-size: 0.75rem; color: var(--teal-strong); }
.tarjeta-int .ruta, .tarjeta-int .meta { color: var(--muted); }
.etiqueta-alerta { background: #FBEFD5; color: #8E6310; font-size: 0.75rem; padding: 2px 6px; border-radius: 3px; justify-self: start; }
.cerradas { background: var(--surface); border: 1px solid var(--line); padding: 10px 14px; }
.cerradas summary { cursor: pointer; font-weight: 600; }
.etapa-pill { font-family: var(--mono); font-size: 0.72rem; background: var(--wash); color: var(--teal-strong); padding: 2px 8px; border-radius: 999px; white-space: nowrap; }
.dos-col { display: grid; grid-template-columns: 1.3fr 1fr; gap: 18px; align-items: start; }
.grid-form { display: grid; gap: 12px; }
.bitacora { list-style: none; padding: 0; margin: 0; display: grid; gap: 0; }
.bitacora li { border-top: 1px solid var(--line); padding: 10px 0; display: grid; gap: 2px; }
.bitacora li:first-child { border-top: 0; }
.bitacora .cuando { font-size: 0.8rem; color: var(--muted); }
.bitacora .tipo-cambio_etapa { color: var(--teal-strong); }
.campo textarea { font: inherit; padding: 9px 11px; border: 1px solid var(--line); border-radius: 4px; background: var(--paper); min-height: 90px; resize: vertical; }
.zona-peligro { border: 1px solid var(--bad); padding: 14px; display: grid; gap: 8px; }
@media (max-width: 900px) { .dos-col { grid-template-columns: 1fr; } }
.filas-sistemas { border: 1px solid var(--line); border-radius: 4px; padding: 10px 12px; display: grid; gap: 8px; margin: 0; }
.filas-sistemas legend { font-weight: 600; padding: 0 4px; }
.filas-sistemas p { margin: 0; font-size: 0.85rem; }
.fila-sistema { display: grid; grid-template-columns: 2fr 1fr; gap: 8px; }
.tarjeta-int .tipo { font-size: 0.75rem; color: var(--muted); }
.oculto { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }