:root {
  --azul: #1f63b8;
  --azul-osc: #0f3f80;
  --azul-claro: #e8f0fb;
  --amarillo: #f5d10a;
  --texto: #1d2633;
  --suave: #5b6676;
  --borde: #c9d4e3;
  --fondo: #f3f6fa;
  --blanco: #ffffff;
  --ok: #1b7f3b;
  --ok-bg: #e6f4ea;
  --err: #b42318;
  --err-bg: #fdecea;
  --aviso-bg: #fff6d6;
  --radio: 10px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --azul: #5b9be6; --azul-osc: #8bb8ef; --azul-claro: #16263d; --texto: #e6ebf2; --suave: #a3afc0;
    --borde: #34445c; --fondo: #0f1724; --blanco: #172133; --ok: #59c27b; --ok-bg: #12301d;
    --err: #ff8a80; --err-bg: #3a1714; --aviso-bg: #3a3214;
  }
}
:root[data-theme="dark"] {
  --azul: #5b9be6; --azul-osc: #8bb8ef; --azul-claro: #16263d; --texto: #e6ebf2; --suave: #a3afc0;
  --borde: #34445c; --fondo: #0f1724; --blanco: #172133; --ok: #59c27b; --ok-bg: #12301d;
  --err: #ff8a80; --err-bg: #3a1714; --aviso-bg: #3a3214;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--fondo); color: var(--texto);
  font: 16px/1.5 "Open Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}
[hidden] { display: none !important; }

.banner { background: #1f63b8; text-align: center; line-height: 0; overflow: hidden; }
.banner img { width: 100%; max-width: 980px; height: auto; }
.titlebar { text-align: center; padding: 14px 16px 4px; }
.titlebar h1 { margin: 0; color: var(--azul); font-size: 1.6rem; letter-spacing: .5px; }
.modo { margin: 6px auto 0; max-width: 760px; background: var(--aviso-bg); border-radius: 8px; padding: 6px 12px; font-size: .9rem; }

/* Progreso */
.progress { max-width: 980px; margin: 8px auto 0; padding: 0 16px; overflow-x: auto; scrollbar-width: none; }
.progress ol { list-style: none; display: flex; gap: 4px; padding: 0; margin: 0; min-width: max-content; }
.progress button {
  display: flex; flex-direction: column; align-items: center; gap: 2px; background: none; border: 0;
  color: var(--suave); font: inherit; font-size: .72rem; cursor: pointer; padding: 4px 6px; min-width: 64px;
}
.progress button:disabled { cursor: default; opacity: .55; }
.progress span {
  width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font-weight: 700;
  background: var(--blanco); border: 2px solid var(--borde); font-size: .8rem;
}
.progress em { font-style: normal; white-space: nowrap; }
.progress li.hecho span { background: var(--azul-claro); border-color: var(--azul); color: var(--azul); }
.progress li.activo span { background: var(--azul); border-color: var(--azul); color: #fff; }
.progress li.activo em { color: var(--azul); font-weight: 700; }

main { max-width: 980px; margin: 0 auto; padding: 12px 16px 32px; }
.step {
  background: var(--blanco); border-radius: var(--radio); padding: 22px 22px 26px;
  box-shadow: 0 1px 3px rgba(15, 40, 80, .08), 0 6px 18px rgba(15, 40, 80, .05);
}
.step h2 {
  margin: 0 0 14px; font-size: 1.15rem; color: #fff; background: var(--azul);
  padding: 8px 12px; border-radius: 6px; line-height: 1.35;
}
.step h2 ~ h2 { margin-top: 26px; }
.step h3 { margin: 22px 0 6px; font-size: 1rem; color: var(--azul-osc); }
.doc-tag { margin: 0 0 6px; font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .6px; color: var(--azul); }
.help { color: var(--suave); font-size: .88rem; margin: 6px 0 12px; }

/* Campos */
label { display: block; font-size: .82rem; font-weight: 600; color: var(--suave); margin: 0 0 12px; text-transform: uppercase; letter-spacing: .3px; }
input:not([type=radio]):not([type=checkbox]), select, textarea {
  display: block; width: 100%; margin-top: 4px; padding: 10px 12px; font: inherit; font-size: 1rem;
  color: var(--texto); background: var(--blanco); border: 1.5px solid var(--borde); border-radius: 8px;
  text-transform: none; letter-spacing: 0; min-height: 44px;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--azul); box-shadow: 0 0 0 3px color-mix(in srgb, var(--azul) 22%, transparent); }
label.invalid input, label.invalid select, label.invalid textarea { border-color: var(--err); background: var(--err-bg); }
.ferr { display: block; color: var(--err); font-size: .78rem; text-transform: none; letter-spacing: 0; margin-top: 3px; }
.err { color: var(--err); font-size: .85rem; margin: -4px 0 10px; min-height: 0; }
.err:empty { display: none; }

.grid { display: grid; gap: 0 14px; }
.g2 { grid-template-columns: 1fr 1fr; }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g2-1 { grid-template-columns: 2fr 1fr; }
.g1-2 { grid-template-columns: 1fr 2fr; }
.g-mail { grid-template-columns: 2fr 1fr; }
.mail { display: flex; align-items: center; gap: 6px; margin-top: 4px; }
.mail input, .mail select { margin-top: 0 !important; }
.mail b { color: var(--texto); }
.mail select { max-width: 48%; }
@media (max-width: 680px) {
  .g2, .g3, .g2-1, .g1-2, .g-mail { grid-template-columns: 1fr; }
  .step { padding: 18px 14px 22px; }
}

.card { border: 1.5px solid var(--borde); border-radius: var(--radio); padding: 12px 14px 4px; margin: 0 0 16px; }
.card legend { font-weight: 700; color: var(--azul); padding: 0 6px; }

.check { display: flex; gap: 10px; align-items: flex-start; text-transform: none; letter-spacing: 0; font-size: .95rem; color: var(--texto); font-weight: 400; cursor: pointer; }
.check input { width: 22px; height: 22px; margin: 1px 0 0; flex: none; accent-color: var(--azul); }
.check.strong { background: var(--azul-claro); padding: 12px 14px; border-radius: 8px; font-weight: 600; margin-top: 16px; }

.seg { display: flex; flex-wrap: wrap; gap: 8px 10px; align-items: center; margin: 4px 0 14px; }
.seg.col { flex-direction: column; align-items: stretch; }
.seg-label { width: 100%; font-weight: 600; font-size: .95rem; }
.seg label {
  display: flex; align-items: flex-start; gap: 10px; margin: 0; padding: 10px 14px; border: 1.5px solid var(--borde);
  border-radius: 8px; text-transform: none; letter-spacing: 0; color: var(--texto); font-weight: 400; font-size: .95rem;
  cursor: pointer; background: var(--blanco);
}
.seg label:has(input:checked) { border-color: var(--azul); background: var(--azul-claro); }
.seg input[type=radio] { width: 20px; height: 20px; margin: 1px 0 0; accent-color: var(--azul); flex: none; }

.callout { background: var(--azul-claro); border-left: 4px solid var(--azul); padding: 10px 14px; border-radius: 8px; margin: 12px 0; }
.callout p { margin: 6px 0; }
.callout.ok { background: var(--ok-bg); border-color: var(--ok); }
.doclist li { margin: 4px 0; }

.resumen { border: 1px dashed var(--borde); border-radius: 8px; padding: 8px 12px; margin: 0 0 14px; font-size: .9rem; }
.resumen .auto { margin: 0 0 4px; font-size: .72rem; text-transform: uppercase; color: var(--azul); font-weight: 700; letter-spacing: .5px; }
.resumen dl { display: grid; grid-template-columns: max-content 1fr; gap: 2px 12px; margin: 0; }
.resumen dt { color: var(--suave); }
.resumen dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
@media (max-width: 480px) { .resumen dl { grid-template-columns: 1fr; } .resumen dd { margin-bottom: 4px; } }

.legal { border: 1px solid var(--borde); border-radius: 8px; padding: 8px 14px; margin: 0 0 10px; font-size: .92rem; }
.legal summary { cursor: pointer; font-weight: 700; color: var(--azul-osc); }
.legal li { margin: 3px 0; }

/* Foto */
.foto-wrap { display: flex; gap: 18px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.foto {
  width: 126px; aspect-ratio: 9 / 10; border: 2px dashed var(--borde); border-radius: 6px; display: grid; place-items: center;
  text-align: center; color: var(--suave); font-size: .8rem; overflow: hidden; background: var(--fondo);
}
.foto img { width: 100%; height: 100%; object-fit: cover; }
.foto-wrap > div:not(.foto) { flex: 1; min-width: 200px; }
.foto { flex: none; }
.foto-btns { display: flex; flex-wrap: wrap; gap: 8px; }
.foto-btns label.btn { margin: 0; font-size: .95rem; }
.foto-btns label.btn-ghost { color: var(--azul); }
.foto-btns label.btn-primary { color: #fff; }

/* Firma */
.sig { margin: 4px 0 8px; max-width: 560px; }
.sig-box { position: relative; border: 1.5px solid var(--borde); border-radius: 8px; background: #fff; touch-action: none; }
.sig-box canvas { display: block; width: 100%; aspect-ratio: 4 / 1; cursor: crosshair; touch-action: none; }
.sig-hint { position: absolute; inset: 0; display: grid; place-items: center; color: #9aa6b8; pointer-events: none; font-size: .9rem; }
.sig-line { position: absolute; left: 8%; right: 8%; bottom: 18%; border-bottom: 1px solid #b8c4d6; pointer-events: none; }
.sig-actions { display: flex; gap: 8px; margin-top: 6px; flex-wrap: wrap; }

/* Botones */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; font: inherit; font-weight: 600; font-size: .95rem;
  padding: 10px 18px; border-radius: 8px; border: 1.5px solid transparent; cursor: pointer; text-decoration: none;
  text-transform: none; letter-spacing: 0; min-height: 44px; margin: 0;
}
.btn-primary { background: var(--azul); color: #fff; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-primary:disabled { opacity: .6; cursor: progress; }
.btn-ghost { background: var(--blanco); color: var(--azul); border-color: var(--borde); }
.btn-ghost:hover { border-color: var(--azul); }
.btn-sm { padding: 6px 12px; font-size: .85rem; min-height: 36px; }
.btn-lg { padding: 14px 24px; font-size: 1.05rem; }

.nav {
  position: sticky; bottom: 0; display: flex; justify-content: space-between; align-items: center; gap: 10px;
  padding: 12px 0; margin-top: 12px; background: linear-gradient(transparent, var(--fondo) 30%);
}
.nav .btn { white-space: nowrap; }
.guardado { font-size: .8rem; color: var(--suave); text-align: center; }
@media (max-width: 420px) { .guardado { font-size: .7rem; } .nav .btn { padding: 10px 14px; } }

/* Checklist final */
.checklist { list-style: none; padding: 0; margin: 0 0 16px; }
.checklist li { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border: 1px solid var(--borde); border-radius: 8px; margin-bottom: 8px; }
.checklist li > span:nth-child(2) { flex: 1; }
.checklist small { display: block; color: var(--suave); }
.checklist .ico { width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; flex: none; }
.checklist .ok .ico { background: var(--ok-bg); color: var(--ok); }
.checklist .pend .ico { background: var(--err-bg); color: var(--err); }
.checklist em { color: var(--ok); font-style: normal; font-weight: 600; font-size: .85rem; }

.final-actions { margin-top: 22px; display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
#resultado { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; width: 100%; }
.estado { margin: 0; font-weight: 600; }
.estado:empty { display: none; }
.estado.ok { color: var(--ok); }
.estado.error { color: var(--err); }
.estado.aviso { background: var(--aviso-bg); padding: 6px 12px; border-radius: 6px; }

.pie { text-align: center; color: var(--suave); font-size: .8rem; padding: 10px 16px 24px; }
.pie p { margin: 2px 0; }
.pie .autor { font-size: .78rem; }
.pie .autor strong { color: var(--azul-osc); font-weight: 600; }

/* Historial de pre-matrículas enviadas (paso Inicio) */
.historial { margin-bottom: 24px; padding-bottom: 8px; border-bottom: 1px solid var(--borde); }
.hist-lista { list-style: none; padding: 0; margin: 0 0 10px; display: grid; gap: 8px; }
.hist-item {
  width: 100%; display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; align-items: center; text-align: left;
  padding: 12px 14px; border: 1.5px solid var(--borde); border-radius: 10px; background: var(--blanco);
  color: var(--texto); font: inherit; cursor: pointer;
}
.hist-item:hover, .hist-item:focus-visible { border-color: var(--azul); background: var(--azul-claro); }
.hist-nombre { font-weight: 700; color: var(--azul-osc); }
.hist-meta { grid-column: 1; font-size: .85rem; color: var(--suave); }
.hist-accion { grid-column: 2; grid-row: 1 / span 2; font-weight: 600; font-size: .85rem; color: var(--azul); white-space: nowrap; }
@media (max-width: 480px) {
  .hist-item { grid-template-columns: 1fr; }
  .hist-accion { grid-column: 1; grid-row: auto; margin-top: 4px; }
}
.hist-pie { font-size: .82rem; color: var(--suave); margin: 0 0 12px; }
.link-sutil { background: none; border: 0; padding: 0; font: inherit; color: var(--suave); text-decoration: underline; cursor: pointer; }

/* Sesión en la barra superior */
.usuario { margin: 4px 0 0; font-size: .85rem; color: var(--suave); }
.usuario:empty { display: none; }
.usuario button { background: none; border: 0; padding: 0 2px; color: var(--azul); font: inherit; text-decoration: underline; cursor: pointer; }

/* Página de entrada */
.login { max-width: 460px; margin: 0 auto; padding: 22px 16px 8px; display: flex; flex-direction: column; align-items: center; }
.login-card {
  width: 100%; background: var(--blanco); border-radius: 14px; padding: 26px 22px 18px;
  box-shadow: 0 1px 3px rgba(15, 40, 80, .08), 0 10px 30px rgba(15, 40, 80, .08);
}
.login h1 { margin: 0; text-align: center; color: var(--azul); font-size: 1.55rem; letter-spacing: .5px; }
.login-sub { text-align: center; margin: 6px 0 20px; color: var(--suave); }
.login-btns { display: flex; flex-direction: column; gap: 10px; }
.btn-prov {
  display: flex; align-items: center; gap: 12px; width: 100%; min-height: 52px; padding: 10px 16px;
  border: 1.5px solid var(--borde); border-radius: 10px; background: var(--blanco); color: var(--texto);
  font: inherit; font-weight: 600; font-size: 1rem; cursor: pointer; text-align: left;
}
.btn-prov:hover { border-color: var(--azul); background: var(--azul-claro); }
.btn-prov:disabled { opacity: .6; cursor: progress; }
.btn-prov svg { width: 22px; height: 22px; flex: none; }
.btn-prov small { margin-left: auto; font-weight: 400; color: var(--suave); font-size: .8rem; }
@media (max-width: 420px) { .btn-prov small { display: none; } }
.sep { display: flex; align-items: center; gap: 10px; margin: 20px 0 12px; color: var(--suave); font-size: .82rem; text-align: center; }
.sep::before, .sep::after { content: ""; flex: 1; border-top: 1px solid var(--borde); }
.login-email label { margin-bottom: 0; }
.email-row { display: flex; gap: 8px; align-items: stretch; }
.email-row input { flex: 1; min-width: 0; }
.email-row .btn { margin-top: 4px; white-space: nowrap; }
@media (max-width: 420px) { .email-row { flex-direction: column; } .email-row .btn { margin-top: 0; } }
.login .estado { margin-top: 12px; text-align: center; }
.login-why { margin: 16px 0 0; padding: 12px 0 0 18px; border-top: 1px solid var(--borde); color: var(--suave); font-size: .85rem; }
.login-why li { margin: 3px 0; }
/* Acceso sin cuenta: deliberadamente discreto */
.invitado {
  margin: 18px 0 0; background: none; border: 0; padding: 4px 8px; font: inherit; font-size: .68rem;
  color: var(--suave); opacity: .45; cursor: pointer; letter-spacing: .2px;
}
.invitado:hover, .invitado:focus-visible { opacity: .9; text-decoration: underline; }