/* Estilos base. Paleta tomada del artifact "Seguimiento diario SEMS" (navy + naranja). */
:root {
  --bg: #ffffff; --surface: #f4f6f9; --line: #dde3ea;
  --ink: #13294b; --ink-2: #4b5d78; --muted: #7a8799;
  --orange: #e8661c; --orange-soft: #fdeee4; --orange-ink: #b54a0d; --on-orange: #ffffff;
  --band: #13294b; --band-ink: #ffffff; --band-2: #c9d4e6;
  --ok: #1f7a4d; --ok-soft: #e3f3ea; --bad: #c23b3b; --bad-soft: #fbe7e7;
  --field: #ffffff;
  --font: "Poppins", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c1626; --surface: #14223a; --line: #26385a;
    --ink: #eef2f8; --ink-2: #b4c0d3; --muted: #8392aa;
    --orange: #f07a33; --orange-soft: #3a2516; --orange-ink: #ffb07f; --on-orange: #1a0d04;
    --band: #0a1424; --band-ink: #ffffff; --band-2: #9fb0c9;
    --ok: #5fcf97; --ok-soft: #16372a; --bad: #ff8a8a; --bad-soft: #3b1a1a;
    --field: #0f1b2f;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg); color: var(--ink);
  font-family: var(--font); font-size: 15px; line-height: 1.5;
  min-height: 100vh; display: flex; flex-direction: column;
}
a { color: var(--orange-ink); }
h1 { font-size: 26px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 18px; margin: 0 0 6px; }
code { background: var(--surface); padding: 1px 5px; border-radius: 4px; font-size: 13px; }
:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }

.contenedor { width: 100%; max-width: 1080px; margin: 0 auto; padding-inline: 16px; }
.contenido { flex: 1; padding-block: 28px 48px; }
.texto-suave { color: var(--ink-2); margin: 0 0 16px; }
.nota { color: var(--muted); font-size: 13px; margin: 18px 0 0; }

/* Banda superior */
.banda { background: var(--band); color: var(--band-ink); border-bottom: 4px solid var(--orange); }
.banda-fila { display: flex; align-items: center; gap: 24px; min-height: 60px; flex-wrap: wrap; padding-block: 8px; }
.marca { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; color: inherit; text-decoration: none; }
.marca i { display: inline-block; width: 22px; height: 6px; background: var(--orange); border-radius: 3px; }
.nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.nav a { color: var(--band-2); text-decoration: none; padding: 6px 10px; border-radius: 8px; font-size: 14px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--band-ink); background: rgba(255, 255, 255, .1); }
.usuario { display: flex; align-items: center; gap: 12px; font-size: 14px; }
.usuario-nombre { color: var(--band-ink); text-decoration: none; max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.usuario form { margin: 0; }
.boton-enlace { background: none; border: 1px solid rgba(255, 255, 255, .25); color: var(--band-ink); border-radius: 8px; padding: 4px 12px; font: inherit; cursor: pointer; }
.boton-enlace:hover { background: rgba(255, 255, 255, .1); }

/* Tarjetas y rejilla */
.tarjeta { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
.rejilla { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-top: 20px; }
.etiqueta { display: inline-block; padding: 2px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; background: var(--orange-soft); color: var(--orange-ink); }

/* Botones */
.boton { display: inline-flex; align-items: center; justify-content: center; gap: 10px; border-radius: 10px; padding: 12px 18px; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; border: 1px solid transparent; }
.boton-google { width: 100%; background: var(--field); color: var(--ink); border-color: var(--line); }
.boton-google:hover { border-color: var(--orange); }
.boton-secundario { background: var(--orange); color: var(--on-orange); }

/* Mensajes */
.mensajes { list-style: none; padding: 0; margin: 0 0 16px; display: grid; gap: 8px; }
.mensaje { padding: 10px 14px; border-radius: 8px; background: var(--surface); color: var(--ink-2); font-size: 14px; }
.mensaje.error { background: var(--bad-soft); color: var(--bad); }
.mensaje.success { background: var(--ok-soft); color: var(--ok); }
.mensaje.warning, .aviso { background: var(--orange-soft); color: var(--orange-ink); }
.aviso { padding: 10px 14px; border-radius: 8px; font-size: 14px; }

/* Datos (perfil) */
.datos { display: grid; grid-template-columns: max-content 1fr; gap: 8px 24px; margin: 0; }
.datos dt { color: var(--muted); font-size: 13px; }
.datos dd { margin: 0; word-break: break-word; }

/* Páginas públicas (login, errores) */
body.publico { background: var(--band); }
.centro { flex: 1; display: grid; place-items: center; padding: 24px 16px; }
.tarjeta-entrada { width: 100%; max-width: 420px; padding: 32px 28px; box-shadow: 0 10px 40px rgba(0, 0, 0, .25); }
.tarjeta-entrada .marca { color: var(--ink-2); font-size: 13px; margin-bottom: 18px; }
.tarjeta-entrada form { margin: 0; }

.pie { color: var(--muted); font-size: 12px; padding-block: 16px; border-top: 1px solid var(--line); }

@media (max-width: 620px) {
  .banda-fila { gap: 8px 16px; }
  .nav { order: 3; flex-basis: 100%; }
  .usuario { margin-left: auto; }
  .usuario-nombre { max-width: 140px; }
}