:root {
  --rojo: #b3261e;
  --rojo-oscuro: #8c1d17;
  --fondo: #faf7f4;
  --tarjeta: #ffffff;
  --texto: #26201d;
  --texto-suave: #7a6f68;
  --borde: #e7ddd6;
  --ok: #1b7f4b;
  --aviso: #a35c00;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--fondo);
  color: var(--texto);
  font-size: 17px;
}

a { color: var(--rojo); }

/* ---------- login ---------- */
.login {
  max-width: 420px;
  margin: 0 auto;
  padding: 48px 20px;
  text-align: center;
}
.login h1 { margin: 0 0 4px; font-size: 1.6rem; }
.login .sub { color: var(--texto-suave); margin: 0 0 28px; }
.login form { text-align: left; }

/* ---------- barra superior ---------- */
.barra {
  background: var(--rojo);
  color: #fff;
  padding: 12px 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  justify-content: space-between;
  align-items: baseline;
  position: sticky;
  top: 0;
  z-index: 5;
}
.barra a { color: #ffd9d6; text-decoration: none; }
.barra .quien { display: block; font-size: 0.85rem; opacity: 0.9; }
.barra .volver { margin-right: 8px; font-weight: 600; }
.resumen { display: flex; gap: 14px; font-size: 0.9rem; }
.resumen .aviso { color: #ffe2b8; }

/* ---------- contenido ---------- */
.contenido { max-width: 680px; margin: 0 auto; padding: 16px 16px 96px; }

.buscador { display: flex; gap: 8px; margin-bottom: 16px; }
.buscador input { flex: 1; }

.vacio { text-align: center; color: var(--texto-suave); padding: 40px 0; }

/* ---------- tarjetas ---------- */
.tarjetas { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.tarjeta {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--tarjeta);
  border: 1px solid var(--borde);
  border-radius: 14px;
  padding: 10px;
  text-decoration: none;
  color: inherit;
}
.tarjeta img, .tarjeta .sinfoto {
  width: 64px;
  height: 64px;
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
}
.tarjeta .sinfoto {
  background: var(--fondo);
  border: 1px dashed var(--borde);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}
.tarjeta .info { flex: 1; min-width: 0; }
.tarjeta .nombre { display: block; font-weight: 600; overflow-wrap: anywhere; }
.tarjeta .meta { font-size: 0.8rem; color: var(--texto-suave); }
.tarjeta .meta .aviso { color: var(--aviso); }
.tarjeta .cantidad {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--rojo);
  min-width: 44px;
  text-align: right;
}

/* ---------- formularios ---------- */
label { display: block; margin-bottom: 14px; font-weight: 600; }
input[type="text"], input[type="password"], input[type="number"], input[type="search"] {
  width: 100%;
  margin-top: 6px;
  padding: 12px;
  font-size: 1.05rem;
  border: 1px solid var(--borde);
  border-radius: 10px;
  background: #fff;
}
input:focus { outline: 2px solid var(--rojo); border-color: var(--rojo); }

.codigo-fila { display: flex; gap: 8px; margin-bottom: 14px; }
.codigo-fila input { flex: 1; margin-top: 0; }
.codigo-fila .btn { white-space: nowrap; }
#lector {
  margin: 0 0 14px;
  border: 2px solid var(--rojo);
  border-radius: 14px;
  overflow: hidden;
  background: #000;
}
#lector video { display: block; width: 100%; }
.ayuda { font-size: 0.85rem; color: var(--texto-suave); margin: -4px 0 14px; }

.fotos { display: grid; gap: 12px; margin: 18px 0; }
@media (min-width: 480px) { .fotos { grid-template-columns: 1fr 1fr; } }
.foto-campo {
  background: var(--tarjeta);
  border: 1px dashed var(--borde);
  border-radius: 14px;
  padding: 14px;
  font-weight: 600;
}
.foto-campo img {
  display: block;
  width: 100%;
  max-height: 220px;
  object-fit: contain;
  margin: 10px 0;
  border-radius: 10px;
  background: var(--fondo);
}
.foto-campo input { margin-top: 10px; width: 100%; }

.btn {
  padding: 12px 18px;
  font-size: 1.05rem;
  font-weight: 700;
  border: 1px solid var(--borde);
  border-radius: 12px;
  background: #fff;
  color: var(--texto);
  cursor: pointer;
}
.btn.principal {
  display: block;
  width: 100%;
  background: var(--rojo);
  border-color: var(--rojo-oscuro);
  color: #fff;
  margin-top: 8px;
}
.btn.principal:active { background: var(--rojo-oscuro); }
.btn.peligro {
  display: block;
  width: 100%;
  margin-top: 24px;
  background: #fff;
  color: var(--rojo);
  border-color: var(--rojo);
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.chip {
  border: 1px solid var(--borde);
  background: #fff;
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 0.95rem;
  cursor: pointer;
}

.error {
  background: #fdecea;
  color: var(--rojo);
  border: 1px solid #f5c6c2;
  border-radius: 10px;
  padding: 10px 12px;
  font-weight: 600;
}

.alerta {
  background: #fff6e5;
  border: 1px solid #f0d9ac;
  border-radius: 12px;
  padding: 12px 16px;
  margin-bottom: 16px;
}
.alerta ul { margin: 8px 0; padding-left: 20px; }

.historial { margin-top: 28px; color: var(--texto-suave); }
.historial summary { font-weight: 700; cursor: pointer; }
.historial ul { list-style: none; padding: 0; }
.historial li { padding: 6px 0; border-bottom: 1px solid var(--borde); font-size: 0.9rem; }
.historial .meta { display: block; font-size: 0.8rem; }

.acciones-pie {
  display: flex;
  gap: 18px;
  justify-content: center;
  margin-top: 28px;
}
.enlace { font-weight: 600; }

/* ---------- botón flotante ---------- */
.fab {
  position: fixed;
  right: 20px;
  bottom: 24px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--rojo);
  color: #fff;
  font-size: 2rem;
  line-height: 60px;
  text-align: center;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(140, 29, 23, 0.4);
}