/* Caja 3° Básico — hoja de cuaderno cuadriculado */
:root {
  --papel: #F5F7FB;
  --cuadro: #DCE5F0;
  --blanco: #FFFFFF;
  --tinta: #1B2A4A;
  --tinta-2: #55627A;
  --linea: #C9D4E3;
  --verde: #1E7A4C;
  --verde-suave: #E3F2EA;
  --rojo: #B8361E;
  --rojo-suave: #FBE9E5;
  --destacador: #FFE15A;
  --margen: #E8A3A3;
  --escudo: #3752A7;
  --escudo-osc: #2A4290;
  --escudo-suave: #E8EDF8;
  --pasto: #77C043;
  --radio: 6px;
  --paso: 24px;
  --fuente: "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "Bricolage Grotesque", var(--fuente);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--fuente);
  font-size: 17px;
  line-height: 1.5;
  color: var(--tinta);
  background-color: var(--papel);
  background-image:
    linear-gradient(var(--cuadro) 1px, transparent 1px),
    linear-gradient(90deg, var(--cuadro) 1px, transparent 1px);
  background-size: var(--paso) var(--paso);
  background-attachment: fixed;
}
a { color: var(--tinta); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid #3A6FD8; outline-offset: 2px; border-radius: 3px; }
h1, h2, h3 { font-family: var(--display); line-height: 1.15; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.6rem, 4.5vw, 2.2rem); font-weight: 800; }
h2 { font-size: 1.25rem; font-weight: 700; }
h3 { font-size: 1.05rem; font-weight: 700; margin: 20px 0 8px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.tenue { color: var(--tinta-2); font-size: 0.88em; font-weight: 400; }
.neg { color: var(--rojo); }
.pos { color: var(--verde); }
.pre { white-space: pre-line; margin: 6px 0 0; }

/* ---------- Barra superior ---------- */
.barra {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 20px;
  padding: 10px max(16px, env(safe-area-inset-left));
  background: var(--blanco);
  border-bottom: 3px solid var(--escudo);
}
.marca { display: flex; align-items: center; gap: 10px; flex: 0 1 auto; text-decoration: none; font-family: var(--display); font-weight: 800; font-size: 1.05rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.marca img { flex: none; border-radius: 50%; }
.marca-curso { overflow: hidden; text-overflow: ellipsis; }
.nav { display: flex; gap: 4px; flex: none; }
.nav a { text-decoration: none; padding: 6px 12px; border-radius: 999px; font-weight: 700; color: var(--tinta-2); }
.nav a:hover { color: var(--tinta); background: var(--papel); }
.nav a.activo { color: var(--tinta); background: var(--destacador); }
.salir { margin-left: auto; display: flex; align-items: center; gap: 10px; font-size: 0.9rem; color: var(--tinta-2); }
.quien { white-space: nowrap; }

/* ---------- Hoja ---------- */
.hoja {
  max-width: 920px;
  margin: 24px auto 64px;
  padding: 28px 28px 36px 56px;
  background: var(--blanco);
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  position: relative;
}
.hoja::before { /* margen rojo del cuaderno */
  content: ""; position: absolute; top: 0; bottom: 0; left: 36px;
  border-left: 2px solid var(--margen);
}
.hoja-sola { max-width: 520px; margin-top: 8vh; }

.cab { display: flex; align-items: baseline; justify-content: space-between; gap: 12px 20px; flex-wrap: wrap; margin-bottom: 12px; }
.cab-total { font-family: var(--display); font-weight: 800; font-size: 1.6rem; margin: 0; font-variant-numeric: tabular-nums; }
.miga { margin: 0 0 4px; font-size: 0.92rem; }
.miga a { color: var(--tinta-2); }
.miga a::before { content: "‹ "; }
.meta { color: var(--tinta-2); margin: 0 0 12px; }
.nota { background: var(--papel); border-left: 3px solid var(--linea); padding: 10px 14px; margin: 0 0 16px; }
.ayuda { color: var(--tinta-2); font-size: 0.92rem; margin: 6px 0 12px; }
.vacio-linea { color: var(--tinta-2); font-style: italic; }
.pie { margin: 32px 0 0; color: var(--tinta-2); font-size: 0.92rem; }

.bloque { margin-top: 32px; }
.bloque > h2 { margin-bottom: 10px; }
.bloque-cab { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 10px; }
.bloque-cab a { font-size: 0.92rem; }

.aviso { padding: 12px 16px; border-radius: var(--radio); margin: 0 0 20px; font-weight: 700; }
.aviso-ok { background: var(--verde-suave); color: #14573A; border: 1px solid #A9D6BC; }
.aviso-error { background: var(--rojo-suave); color: #8A2814; border: 1px solid #EDB6A8; }
.aviso-pendiente { background: #FFF6D6; color: #6B5300; border: 1px solid #E9D27A; font-weight: 700; }
.aviso-pendiente a { color: inherit; }

.etiqueta { display: inline-block; font-family: var(--fuente); font-size: 0.75rem; font-weight: 700; padding: 2px 8px; border-radius: 999px; background: var(--papel); border: 1px solid var(--linea); color: var(--tinta-2); vertical-align: middle; }

/* ---------- Suma del resumen (lo memorable) ---------- */
.cuenta-titulo { font-size: 1.1rem; font-weight: 700; color: var(--tinta-2); margin-bottom: 14px; }
.suma { display: inline-grid; grid-template-columns: auto auto 1fr; column-gap: 0; font-variant-numeric: tabular-nums; }
.suma-fila { display: contents; }
.suma-signo, .suma-num { font-family: var(--display); font-weight: 700; font-size: clamp(1.35rem, 4.2vw, 1.9rem); text-align: right; line-height: 1.5; }
.suma-signo { color: var(--tinta-2); padding-right: 14px; }
.suma-et { padding-left: 14px; }
.suma-et { align-self: center; color: var(--tinta-2); font-size: 0.95rem; }
a.suma-et { text-decoration-color: var(--linea); }
.suma-resta .suma-num { color: var(--rojo); }
.suma-total .suma-num, .suma-total .suma-signo {
  font-size: clamp(2.6rem, 10vw, 4.4rem); font-weight: 800; color: var(--verde);
  border-top: 3px solid var(--tinta); padding-top: 4px; margin-top: 6px; line-height: 1.1;
}
.suma-total .suma-et { color: var(--tinta); font-weight: 700; font-size: 1.05rem; border-top: 3px solid transparent; padding-top: 4px; margin-top: 6px; }

.transferir { background: #FFFBE6; border: 1px dashed #D9C46A; border-radius: var(--radio); padding: 14px 18px; }
.transferir h2 { font-size: 1.05rem; }

/* ---------- Meses ---------- */
.meses { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.meses li { display: grid; grid-template-columns: 3.2ch 1fr 4.5ch; align-items: center; gap: 12px; padding: 2px 6px; border-radius: 4px; }
.mes-nom { font-weight: 700; }
.mes-barra { height: 12px; background: var(--papel); border: 1px solid var(--linea); border-radius: 999px; overflow: hidden; }
.mes-barra span { display: block; height: 100%; background: var(--verde); border-radius: 999px; }
.mes-dato { text-align: right; font-variant-numeric: tabular-nums; color: var(--tinta-2); font-size: 0.92rem; }
.mes-actual { background: var(--destacador); }
.mes-actual .mes-dato { color: var(--tinta); }
.mes-futuro { opacity: 0.55; }

/* ---------- Listas ---------- */
.lista { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--linea); }
.lista > li { display: flex; align-items: center; gap: 10px 14px; padding: 11px 2px; border-bottom: 1px solid var(--linea); flex-wrap: wrap; }
.lista-txt { flex: 1 1 220px; min-width: 0; text-decoration: none; }
a.lista-txt:hover { text-decoration: underline; }
.lista-txt .tenue { display: block; }
.lista-monto { font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; margin-left: auto; }
.lista-acciones { display: flex; gap: 14px; align-items: center; flex-basis: 100%; justify-content: flex-end; }
.lista-cuotas li.listo .lista-txt::before { content: "✓ "; color: var(--verde); font-weight: 700; }
.lista-edit li.inactivo { opacity: 0.6; }

.clip { display: inline-flex; align-items: center; gap: 4px; font-size: 0.85rem; color: var(--tinta-2); white-space: nowrap; }
.clip svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.clip-falta { color: var(--rojo); }

/* ---------- Grilla de cuotas (cuaderno) ---------- */
.pestanas { display: flex; gap: 4px; background: var(--papel); padding: 4px; border-radius: 999px; border: 1px solid var(--linea); }
.pestanas a { text-decoration: none; padding: 5px 14px; border-radius: 999px; font-weight: 700; color: var(--tinta-2); }
.pestanas { flex-wrap: nowrap; overflow-x: auto; max-width: 100%; scrollbar-width: none; }
.pestanas a { white-space: nowrap; }
.solo-movil { display: none; }
.pestanas a.activo { background: var(--escudo); color: var(--blanco); }
.contador { display: inline-block; min-width: 1.4em; padding: 0 6px; border-radius: 999px; background: var(--rojo); color: var(--blanco); font-size: 0.78rem; text-align: center; }

.cuaderno { overflow-x: auto; margin: 0 -8px; padding: 0 8px; -webkit-overflow-scrolling: touch; }
.grilla { border-collapse: collapse; font-variant-numeric: tabular-nums; min-width: 100%; }
.grilla th, .grilla td { border: 1px solid var(--cuadro); padding: 0; text-align: center; height: 38px; min-width: 44px; }
.grilla thead th { font-size: 0.85rem; font-weight: 700; color: var(--tinta-2); padding: 4px 6px; vertical-align: bottom; border-bottom: 2px solid var(--tinta); }
.th-monto { display: block; font-weight: 400; font-size: 0.75rem; }
.grilla .col-alumno { position: sticky; left: 0; background: var(--blanco); text-align: left; padding: 0 12px 0 4px; min-width: 150px; white-space: nowrap; font-weight: 400; z-index: 1; border-right: 2px solid var(--margen); }
.grilla tbody .col-alumno a { text-decoration: none; display: block; line-height: 38px; }
.grilla tbody .col-alumno a:hover { text-decoration: underline; }
.grilla .col-total { padding: 0 10px; text-align: right; font-weight: 700; white-space: nowrap; }
.grilla tfoot td, .grilla tfoot th { font-size: 0.82rem; color: var(--tinta-2); border-top: 2px solid var(--tinta); }
.grilla tbody tr:hover td, .grilla tbody tr:hover .col-alumno { background-color: #F0F4FA; }
.grilla .destacado { background: var(--destacador); }
.grilla tbody tr:hover td.destacado { background: #F7D63F; }
.check { width: 24px; height: 24px; fill: none; stroke: var(--verde); stroke-width: 2.8; stroke-linecap: round; stroke-linejoin: round; vertical-align: middle; }
.exento { font-size: 0.8rem; color: var(--tinta-2); font-style: italic; }
.muestra-destacado { background: var(--destacador); padding: 0 6px; border-radius: 3px; color: var(--tinta); }

/* ---------- Cifras del alumno ---------- */
.cifras { display: flex; gap: 12px 40px; flex-wrap: wrap; margin: 4px 0 0; }
.cifras div { margin: 0; }
.cifras dt { color: var(--tinta-2); font-size: 0.9rem; }
.cifras dd { margin: 0; font-family: var(--display); font-weight: 800; font-size: 1.8rem; font-variant-numeric: tabular-nums; }

.abono { border-top: 1px solid var(--linea); padding: 14px 0; }
.abono h3 { margin: 0 0 6px; }
.abono p { margin: 0 0 8px; }

/* ---------- Respaldos ---------- */
.respaldos { list-style: none; margin: 8px 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 14px; }
.respaldos li { display: flex; flex-direction: column; gap: 4px; }
.respaldo { display: block; text-decoration: none; border: 1px solid var(--linea); border-radius: var(--radio); overflow: hidden; background: var(--papel); }
.respaldo img { display: block; width: 100%; height: 150px; object-fit: cover; background: var(--blanco); }
.respaldo-doc { display: flex; align-items: center; justify-content: center; height: 150px; font-family: var(--display); font-weight: 800; font-size: 1.6rem; color: var(--rojo); background: repeating-linear-gradient(var(--blanco) 0 22px, var(--cuadro) 22px 23px); }
.respaldo-nom { display: block; padding: 6px 8px; font-size: 0.8rem; color: var(--tinta-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; border-top: 1px solid var(--linea); }
.respaldos form { margin: 0; }
.subir-mas { margin-top: 12px; }

/* ---------- Formularios ---------- */
label { display: block; font-weight: 700; font-size: 0.92rem; margin: 14px 0 4px; }
input[type=text], input:not([type]), input[type=email], input[type=password], input[type=date], input[inputmode], select, textarea {
  width: 100%; font: inherit; color: var(--tinta);
  padding: 10px 12px; border: 1.5px solid var(--linea); border-radius: var(--radio); background: var(--blanco);
  min-height: 46px;
}
textarea { resize: vertical; min-height: 0; }
input:focus, select:focus, textarea:focus { border-color: var(--tinta); outline: none; box-shadow: 0 0 0 3px rgba(58, 111, 216, .25); }
input[type=file] { font: inherit; font-size: 0.9rem; width: 100%; padding: 10px; border: 1.5px dashed var(--linea); border-radius: var(--radio); background: var(--papel); }
fieldset { border: 0; padding: 0; margin: 14px 0 0; }
legend { font-weight: 700; font-size: 0.92rem; padding: 0; margin-bottom: 6px; }
.fila-campos { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0 16px; }
.formulario form > .boton, .formulario > form > .boton { margin-top: 18px; }

.marcas { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 6px; }
.marca-op { display: flex; align-items: center; gap: 8px; margin: 0; padding: 8px 10px; border: 1.5px solid var(--linea); border-radius: var(--radio); font-weight: 400; cursor: pointer; }
.marca-op:has(input:checked) { border-color: var(--verde); background: var(--verde-suave); }
.marca-op .tenue { margin-left: auto; }
.marca-op input, .estado input { width: 20px; height: 20px; accent-color: var(--verde); margin: 0; }
.estado label { display: flex; align-items: center; gap: 8px; font-weight: 400; margin: 6px 0; }
.total-sel { margin: 10px 0 0; }

.en-linea { display: flex; gap: 8px 12px; align-items: center; flex-wrap: wrap; margin: 0; flex: 1 1 100%; }
.en-linea input { flex: 1 1 180px; width: auto; }
.en-linea input.corto { flex: 0 0 110px; }
.en-linea input.mini { flex: 0 0 64px; }
.en-linea-txt { flex: 1 1 180px; }
.lista-edit .en-linea { flex: 1 1 100%; }

.boton {
  display: inline-block; font: inherit; font-weight: 700; cursor: pointer;
  padding: 12px 22px; min-height: 46px;
  color: var(--blanco); background: var(--escudo); border: 2px solid var(--escudo); border-radius: var(--radio);
  text-decoration: none; text-align: center;
}
.boton:hover { background: var(--escudo-osc); border-color: var(--escudo-osc); }
.boton-wa { background: #1E7A4C; border-color: #1E7A4C; }
.boton-wa:hover { background: #17603B; border-color: #17603B; }
.boton-peligro { background: var(--rojo); border-color: var(--rojo); }
.boton-peligro:hover { background: #962C17; border-color: #962C17; }
.boton:active { transform: translateY(1px); }
.boton[disabled] { opacity: 0.6; cursor: progress; }
.boton-chico { padding: 8px 16px; min-height: 40px; font-size: 0.95rem; }
.enlace { font: inherit; background: none; border: 0; padding: 4px 0; color: var(--tinta); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; font-size: 0.92rem; }
.enlace-peligro { color: var(--rojo); }
.zona-peligro { margin-top: 22px; padding-top: 14px; border-top: 1px dashed var(--linea); }

details.desplegable summary { cursor: pointer; font-size: 0.92rem; text-decoration: underline; text-underline-offset: 3px; list-style: none; }
details.desplegable summary::-webkit-details-marker { display: none; }
details.desplegable[open] { flex-basis: 100%; }
details.desplegable[open] > form { padding: 10px 0 4px; }
details.desplegable-grande { border: 1.5px solid var(--tinta); border-radius: var(--radio); padding: 0 18px; }
details.desplegable-grande > summary { cursor: pointer; font-family: var(--display); font-weight: 700; font-size: 1.1rem; padding: 14px 0; list-style: none; }
details.desplegable-grande > summary::-webkit-details-marker { display: none; }
details.desplegable-grande > summary::before { content: "+ "; color: var(--verde); font-weight: 800; }
details.desplegable-grande[open] > summary::before { content: "− "; }
details.desplegable-grande > form:last-child { padding-bottom: 18px; }

.indice { display: flex; gap: 8px 16px; flex-wrap: wrap; font-size: 0.92rem; margin: 0 0 8px; }

.actividad { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--linea); }
.actividad li { display: grid; grid-template-columns: 9.5rem 1fr; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--linea); font-size: 0.93rem; }
.actividad time { color: var(--tinta-2); font-variant-numeric: tabular-nums; }

/* ---------- Entrada ---------- */
.entrada-logo { display: block; margin: 0 0 14px; border-radius: 50%; }
.entrada-colegio { margin: 0 0 4px; color: var(--tinta-2); font-weight: 700; }
.entrada-titulo { font-size: clamp(2.2rem, 9vw, 3.4rem); line-height: 1; }
.entrada-bajada { margin: 12px 0 8px; max-width: 34ch; }
.entrada-form .boton { width: 100%; margin-top: 14px; }
.entrada-directiva { margin: 24px 0 0; font-size: 0.92rem; }

.vacio h1 { margin-bottom: 10px; }

/* ---------- Metas ---------- */
.meta-fila { margin: 10px 0 14px; }
.meta-txt { margin-bottom: 6px; }
.meta-barra { position: relative; height: 22px; background: var(--escudo-suave); border-radius: 999px; overflow: hidden; }
.meta-barra span { display: block; height: 100%; background: var(--escudo); border-radius: 999px; }
.meta-barra b { position: absolute; right: 10px; top: 0; line-height: 22px; font-size: 0.8rem; color: var(--tinta); }

/* ---------- Link de familia ---------- */
.familia-cab { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.familia-cab img { border-radius: 50%; flex: none; }
.familia-curso { margin: 0; color: var(--tinta-2); font-size: 0.9rem; font-weight: 700; }
.familia-estado { border-radius: var(--radio); padding: 16px 18px; }
.familia-estado p { margin: 0; }
.familia-estado.con-deuda { background: var(--rojo-suave); border: 1px solid #EDB6A8; }
.familia-estado.al-dia { background: var(--verde-suave); border: 1px solid #A9D6BC; }
.familia-monto { font-family: var(--display); font-weight: 800; font-size: 2.4rem; line-height: 1.1; }
.con-deuda .familia-monto { color: var(--rojo); }
.al-dia .familia-monto { color: var(--verde); }
.motivo { display: block; color: var(--rojo); font-size: 0.88rem; }
.estado-envio { display: inline-block; font-size: 0.78rem; font-weight: 700; padding: 2px 9px; border-radius: 999px; white-space: nowrap; }
.estado-pendiente { background: #FFF1BF; color: #6B5300; }
.estado-aprobado { background: var(--verde-suave); color: #14573A; }
.estado-rechazado { background: var(--rojo-suave); color: #8A2814; }
.lista-txt .estado-envio { margin-top: 4px; }

.link-familia .en-linea { margin-bottom: 6px; }
.link-campo { font-size: 0.85rem !important; color: var(--tinta-2) !important; background: var(--papel) !important; }

/* ---------- Revisión ---------- */
.envio { border: 1.5px solid var(--linea); border-left: 5px solid var(--escudo); border-radius: var(--radio); padding: 16px 18px; margin: 18px 0; }
.envio-cab { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.envio-cab h2 a { text-decoration: none; }
.envio-monto { font-family: var(--display); font-weight: 800; font-size: 1.5rem; margin: 0; font-variant-numeric: tabular-nums; }
.envio form .boton { margin-top: 14px; }
.envio .desplegable { margin-top: 12px; }
.nombres-al-dia { color: var(--tinta-2); line-height: 1.8; }

/* ---------- Eventos ---------- */
.eventos { list-style: none; margin: 16px 0 0; padding: 0; border-top: 1px solid var(--linea); }
.evento-fila { display: grid; grid-template-columns: 1fr auto; gap: 4px 16px; padding: 14px 2px; border-bottom: 1px solid var(--linea); text-decoration: none; }
.evento-fila:hover .evento-nom { text-decoration: underline; }
.evento-nom { font-family: var(--display); font-weight: 700; font-size: 1.1rem; }
.evento-cuenta { grid-column: 1; display: flex; gap: 16px; flex-wrap: wrap; font-size: 0.92rem; font-variant-numeric: tabular-nums; }
.evento-resultado { grid-column: 2; grid-row: 1 / span 2; align-self: center; font-family: var(--display); font-weight: 800; font-size: 1.3rem; font-variant-numeric: tabular-nums; }
.suma-chica { margin: 8px 0 4px; }
.suma-chica .suma-signo, .suma-chica .suma-num { font-size: 1.15rem; }
.suma-chica .suma-total .suma-num, .suma-chica .suma-total .suma-signo { font-size: 1.8rem; }

select.corto-sel { flex: 0 1 170px; width: auto; }

/* ---------- Informe ---------- */
.barra-informe { display: flex; gap: 12px; align-items: center; justify-content: flex-end; margin-bottom: 16px; }
.barra-informe .en-linea { flex: 0 0 auto; }
.barra-informe select { width: auto; }
.informe section { margin-top: 26px; break-inside: avoid; }
.informe h2 { font-size: 1.1rem; margin-bottom: 8px; }
.informe-cab { display: flex; gap: 16px; align-items: center; border-bottom: 3px solid var(--escudo); padding-bottom: 14px; }
.informe-cab img { border-radius: 50%; }
.informe-cab p { margin: 0; }
.informe-curso { font-weight: 700; color: var(--tinta-2); }
.tabla { width: 100%; border-collapse: collapse; font-size: 0.93rem; font-variant-numeric: tabular-nums; }
.tabla th { text-align: left; font-size: 0.82rem; color: var(--tinta-2); border-bottom: 2px solid var(--tinta); padding: 6px 8px; }
.tabla td { border-bottom: 1px solid var(--linea); padding: 7px 8px; vertical-align: top; }
.tabla .num { text-align: right; white-space: nowrap; }
.tabla .fecha { white-space: nowrap; color: var(--tinta-2); }
.tabla tfoot td { font-weight: 700; border-top: 2px solid var(--tinta); border-bottom: 0; }
.informe-pie { margin-top: 28px; padding-top: 10px; border-top: 1px solid var(--linea); font-size: 0.85rem; color: var(--tinta-2); }

@media print {
  @page { size: A4; margin: 14mm; }
  body { background: none; font-size: 11pt; padding: 0; }
  .barra, .no-imprimir, .aviso { display: none !important; }
  .hoja { border: 0; margin: 0; padding: 0; max-width: none; }
  .hoja::before { display: none; }
  .tabla { font-size: 9.5pt; }
  .suma-total .suma-num, .suma-total .suma-signo { font-size: 26pt; }
  a { text-decoration: none; }
}

/* ---------- Móvil ---------- */
@media (max-width: 720px) {
  body { font-size: 16px; padding-bottom: calc(70px + env(safe-area-inset-bottom)); }
  .barra { padding: 10px 16px; }
  .nav {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
    justify-content: space-around; gap: 0;
    padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
    background: var(--blanco); border-top: 2px solid var(--tinta);
  }
  .nav a { flex: 1 1 0; text-align: center; padding: 8px 2px; font-size: 0.86rem; }
  .solo-movil { display: inline; }
  .solo-escritorio { display: none; }
  .pestanas a { padding: 5px 11px; font-size: 0.95rem; }
  .quien { display: none; }
  .hoja { margin: 0; border: 0; border-radius: 0; padding: 20px 16px 28px; min-height: calc(100vh - 54px); }
  .hoja::before { display: none; }
  .hoja-sola { margin-top: 0; padding-top: 12vh; }
  .grilla .col-alumno { min-width: 128px; max-width: 150px; overflow: hidden; text-overflow: ellipsis; }
  .actividad li { grid-template-columns: 1fr; gap: 0; }
  .marca-curso { display: none; }
  .salir { margin-left: auto; }
  .tabla { font-size: 0.85rem; }
  .tabla th, .tabla td { padding: 6px 4px; }
  .barra-informe { justify-content: stretch; }
  .barra-informe .boton { flex: 1; }
  .respaldos { grid-template-columns: repeat(2, 1fr); }
}
.sin-sesion { padding-bottom: 0; }

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