:root {
  --verde: #16794f;
  --verde-oscuro: #0f5c3a;
  --gris-fondo: #f4f5f7;
  --gris-borde: #dfe3e8;
  --gris-texto: #4b5563;
  --rojo: #b91c1c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--gris-fondo);
  color: #1f2937;
}

a { color: var(--verde-oscuro); }

.topbar {
  background: var(--verde);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 1.2rem;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.topbar .brand { color: #fff; text-decoration: none; font-weight: 700; font-size: 1.05rem; }
.topbar .links { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.topbar .links a { color: #fff; text-decoration: none; font-size: 0.92rem; }
.topbar .links a:hover { text-decoration: underline; }

.container { max-width: 1100px; margin: 0 auto; padding: 1.2rem; }

.flash { padding: 0.7rem 1rem; border-radius: 8px; margin-bottom: 1rem; font-size: 0.92rem; }
.flash.success { background: #e6f4ea; color: #0f5c3a; }
.flash.error { background: #fdecea; color: var(--rojo); }

.section-title { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.6rem; margin: 1.2rem 0 0.8rem; }
.section-title h1 { font-size: 1.35rem; margin: 0; }

.card { background: #fff; border: 1px solid var(--gris-borde); border-radius: 10px; padding: 1.1rem 1.2rem; margin-bottom: 1rem; }

.btn-row { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-top: 0.6rem; }
.btn { display: inline-block; background: var(--verde); color: #fff; border: none; border-radius: 8px; padding: 0.55rem 1rem; font-size: 0.9rem; cursor: pointer; text-decoration: none; }
.btn:hover { background: var(--verde-oscuro); }
.btn.secondary { background: #6b7280; }
.btn.danger { background: var(--rojo); }
.btn.small { padding: 0.32rem 0.7rem; font-size: 0.8rem; }

label { display: block; font-size: 0.85rem; color: var(--gris-texto); margin: 0.7rem 0 0.25rem; font-weight: 600; }
input[type="text"], input[type="number"], input[type="password"], input[type="search"], select {
  width: 100%; padding: 0.55rem 0.7rem; border: 1px solid var(--gris-borde); border-radius: 8px; font-size: 0.92rem;
}
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }
.checkbox-row { display: flex; align-items: center; gap: 0.5rem; margin-top: 0.8rem; }
.checkbox-row input { width: auto; }
.checkbox-row label { margin: 0; }

.search-bar { display: flex; gap: 0.6rem; margin-bottom: 1rem; flex-wrap: wrap; }
.search-bar input, .search-bar select { flex: 1; min-width: 160px; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.55rem 0.6rem; border-bottom: 1px solid var(--gris-borde); }
th { color: var(--gris-texto); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; }
.table-scroll { overflow-x: auto; }

.muted { color: var(--gris-texto); font-size: 0.88rem; }
.empty { color: var(--gris-texto); font-style: italic; padding: 1.2rem 0; text-align: center; }
.badge-bajo { color: var(--rojo); font-weight: 600; }

.login-card { max-width: 380px; margin: 4rem auto; background: #fff; border: 1px solid var(--gris-borde); border-radius: 12px; padding: 1.8rem; }
.login-card h1 { font-size: 1.3rem; text-align: center; margin-top: 0; }