:root {
  --fondo: #f5f8fb;
  --tarjeta: #ffffff;
  --borde: #dfe6ee;
  --texto: #0f1b2a;
  --suave: #5a6b7e;
  --acento: #0b7fd6;
  --acento-2: #06b6d4;
  --acento-texto: #ffffff;
  --ambar: #b45309;
  --ambar-fondo: #fef3c7;
  --verde: #047857;
  --verde-fondo: #d1fae5;
  --error: #b91c1c;
  --error-fondo: #fee2e2;
  --radio: 14px;
  --sombra: 0 1px 2px rgba(15, 27, 42, .06), 0 8px 24px rgba(15, 27, 42, .06);
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  letter-spacing: -0.011em;
  background: var(--fondo);
  color: var(--texto);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
}
a { color: var(--acento); text-decoration: none; }
a:hover { text-decoration: underline; }

.barra {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 24px; background: var(--tarjeta); border-bottom: 1px solid var(--borde);
  position: sticky; top: 0; z-index: 5;
}
.marca { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--texto); letter-spacing: -0.02em; }
.marca:hover { text-decoration: none; }
.logo { width: 28px; height: 28px; border-radius: 8px; background: linear-gradient(135deg, var(--acento), var(--acento-2)); }
.nav { display: flex; align-items: center; gap: 18px; font-size: 14px; font-weight: 500; }
.nav[hidden] { display: none; }
.nav a { color: var(--suave); }
.nav a.activo { color: var(--texto); }
.enlace { background: none; border: 0; padding: 0; font: inherit; color: var(--suave); cursor: pointer; }
.enlace:hover { color: var(--texto); }

.contenido { flex: 1; width: 100%; max-width: 1080px; margin: 0 auto; padding: 32px 24px 48px; }
.pie { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding: 18px 24px; font-size: 13px; color: var(--suave); border-top: 1px solid var(--borde); background: var(--tarjeta); }

h1 { font-size: 28px; line-height: 1.2; letter-spacing: -0.025em; margin: 0 0 6px; }
h2 { font-size: 19px; letter-spacing: -0.02em; margin: 0; }
h3 { font-size: 15px; letter-spacing: -0.015em; margin: 0 0 10px; }
.sub { color: var(--suave); margin: 0 0 28px; }

.tarjeta { background: var(--tarjeta); border: 1px solid var(--borde); border-radius: var(--radio); box-shadow: var(--sombra); padding: 24px; }
.pila > * + * { margin-top: 20px; }

/* Formularios */
.acceso { max-width: 420px; margin: 24px auto; }
.pestanas { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; background: var(--fondo); border: 1px solid var(--borde); padding: 4px; border-radius: 10px; margin-bottom: 20px; }
.pestanas button { border: 0; background: none; padding: 9px; border-radius: 7px; font: inherit; font-weight: 600; font-size: 14px; color: var(--suave); cursor: pointer; }
.pestanas button[aria-selected="true"] { background: var(--tarjeta); color: var(--texto); box-shadow: 0 1px 2px rgba(15, 27, 42, .08); }
label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
input[type=email], input[type=password], input[type=text] {
  width: 100%; padding: 11px 12px; border: 1px solid var(--borde); border-radius: 10px; font: inherit; color: var(--texto); background: #fff;
}
input:focus { outline: 2px solid var(--acento); outline-offset: 1px; border-color: transparent; }
.campo { margin-bottom: 14px; }
.boton {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 0; border-radius: 10px; padding: 11px 18px; font: inherit; font-weight: 600; font-size: 14px; cursor: pointer;
  background: var(--acento); color: var(--acento-texto); text-decoration: none;
}
.boton:hover { filter: brightness(1.06); text-decoration: none; }
.boton:disabled { opacity: .6; cursor: progress; }
.boton.bloque { width: 100%; }
.boton.sec { background: var(--fondo); color: var(--texto); border: 1px solid var(--borde); }
.boton.peq { padding: 7px 12px; font-size: 13px; }
.aviso { border-radius: 10px; padding: 11px 13px; font-size: 14px; margin-bottom: 14px; }
.aviso.error { background: var(--error-fondo); color: var(--error); }
.aviso.ok { background: var(--verde-fondo); color: var(--verde); }
.nota { font-size: 13px; color: var(--suave); margin-top: 14px; text-align: center; }

/* Mis Laboratorios */
.modulo-cab { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.chip { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: var(--verde-fondo); color: var(--verde); white-space: nowrap; }
.chip.ambar { background: var(--ambar-fondo); color: var(--ambar); }
.chip.gris { background: var(--fondo); color: var(--suave); border: 1px solid var(--borde); }
.vence { font-size: 13px; color: var(--suave); margin-top: 4px; }
.sims { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }
.sim { border: 1px solid var(--borde); border-radius: 12px; padding: 16px; display: flex; flex-direction: column; gap: 12px; min-height: 120px; background: linear-gradient(180deg, #fbfdff, #fff); }
.sim .nombre { font-weight: 600; letter-spacing: -0.015em; }
.sim .acciones { margin-top: auto; }
.mats { margin-top: 22px; border-top: 1px solid var(--borde); padding-top: 18px; }
.lista { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 8px; }
.lista li { display: flex; justify-content: space-between; align-items: center; gap: 10px; border: 1px solid var(--borde); border-radius: 10px; padding: 9px 12px; font-size: 14px; }
.lista .cod { font-variant-numeric: tabular-nums; color: var(--suave); font-size: 12px; font-weight: 600; margin-right: 8px; }
.vacio { text-align: center; padding: 48px 24px; }
.vacio p { color: var(--suave); max-width: 460px; margin: 8px auto 20px; }

/* Visor */
body.visor .contenido { max-width: none; padding: 0; display: flex; flex-direction: column; }
body.visor .pie { display: none; }
.visor-barra { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 20px; background: var(--tarjeta); border-bottom: 1px solid var(--borde); font-size: 14px; }
.visor-marco { flex: 1; width: 100%; border: 0; background: #fff; min-height: calc(100vh - 120px); }
.cargando { padding: 48px; text-align: center; color: var(--suave); }

@media (max-width: 640px) {
  .barra { padding: 12px 16px; }
  .nav { gap: 12px; font-size: 13px; }
  .marca span:last-child { display: none; }
  .contenido { padding: 24px 16px 40px; }
  h1 { font-size: 24px; }
  .tarjeta { padding: 18px; }
  .lista { grid-template-columns: 1fr; }
}