:root {
  --azul: #1e3a5f;
  --azul-claro: #2d5688;
  --azul-oscuro: #16283f;
  --gris-fondo: #f4f6f8;
  --gris-borde: #dbe1e8;
  --texto: #1f2933;
  --texto-suave: #5a6472;
  --verde: #16a34a;
  --rojo: #dc2626;
  --ambar: #d97706;
}

* { box-sizing: border-box; }

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

/* ── Layout con sidebar ─────────────────────────────────────────────────── */
.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 230px;
  flex: 0 0 230px;
  background: var(--azul);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  padding: 18px 20px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.brand span {
  display: block;
  font-size: 0.7rem;
  font-weight: 400;
  opacity: 0.7;
  letter-spacing: 0;
  margin-top: 2px;
}

.nav { display: flex; flex-direction: column; padding: 12px 0; flex: 1; }
.nav-btn {
  background: none;
  border: none;
  border-left: 3px solid transparent;
  color: rgba(255, 255, 255, 0.78);
  text-align: left;
  padding: 10px 20px;
  font-size: 0.88rem;
  cursor: pointer;
}
.nav-btn:hover { background: rgba(255, 255, 255, 0.07); color: #fff; }
.nav-btn.active {
  background: rgba(255, 255, 255, 0.1);
  border-left-color: #fff;
  color: #fff;
  font-weight: 600;
}

.sidebar-foot {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 12px 20px;
  font-size: 0.78rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  opacity: 0.85;
}
.sidebar-foot a { color: #fff; text-decoration: underline; }

.contenido { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  background: #fff;
  border-bottom: 1px solid var(--gris-borde);
  padding: 16px 24px;
}
.topbar h1 { margin: 0; font-size: 1.25rem; }
.topbar p { margin: 3px 0 0; font-size: 0.82rem; color: var(--texto-suave); }

.container { padding: 20px 24px; flex: 1; max-width: 1180px; width: 100%; }

.vista { display: none; }
.vista.active { display: block; }

.loading-indicator {
  background: var(--ambar);
  color: #fff;
  text-align: center;
  font-size: 0.85rem;
  padding: 6px;
}

/* ── Login ──────────────────────────────────────────────────────────────── */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--azul);
}
.login-card {
  background: #fff;
  border-radius: 10px;
  padding: 28px;
  width: min(360px, 92vw);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.login-card h1 { margin: 0; font-size: 1.2rem; }
.login-card .hint { margin: -8px 0 4px; }
.login-card .field { width: 100%; }
.login-card input { width: 100%; }

/* ── Pestañas ───────────────────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--gris-borde);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.tab-btn {
  background: none;
  border: none;
  padding: 10px 16px;
  font-size: 0.9rem;
  color: var(--texto-suave);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
}
.tab-btn.active {
  color: var(--azul);
  font-weight: 600;
  border-bottom-color: var(--azul);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Formularios ────────────────────────────────────────────────────────── */
.form-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
  margin-bottom: 16px;
}
.form-stack { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.form-stack textarea { font-family: ui-monospace, monospace; font-size: 0.75rem; }

.field { display: flex; flex-direction: column; gap: 4px; }
.field label { font-size: 0.75rem; color: var(--texto-suave); }

input, select, textarea {
  border: 1px solid var(--gris-borde);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 0.9rem;
  background: #fff;
  color: var(--texto);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--azul-claro);
}

.btn {
  border: none;
  border-radius: 6px;
  padding: 8px 16px;
  font-size: 0.9rem;
  cursor: pointer;
}
.btn-primary { background: var(--azul); color: #fff; }
.btn-primary:hover { background: var(--azul-claro); }
.btn-ghost { background: transparent; color: var(--azul); border: 1px solid var(--gris-borde); }
.btn-ghost:hover { background: #eef1f4; }
.btn-sm { padding: 4px 10px; font-size: 0.78rem; }

.hint { font-size: 0.8rem; color: var(--texto-suave); }
.hint.warn { color: var(--ambar); }

.error-box {
  background: #fdecea;
  border: 1px solid #f5c2c0;
  color: #7a1f1a;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.ok-box {
  background: #edf9f0;
  border: 1px solid #b7e4c3;
  color: #14532d;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 0.85rem;
  margin-bottom: 16px;
}

/* ── Tablas ─────────────────────────────────────────────────────────────── */
.panel-info {
  background: #eef1f4;
  border: 1px solid var(--gris-borde);
  border-radius: 6px 6px 0 0;
  padding: 8px 12px;
  font-size: 0.8rem;
}
.panel-info .warn { color: var(--ambar); }

.table-scroll { overflow-x: auto; }

.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  background: #fff;
}
.tbl th, .tbl td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--gris-borde);
  text-align: left;
  white-space: nowrap;
}
.tbl th { color: var(--texto-suave); font-weight: 600; background: #fafbfc; }
.tbl td.desc, .tbl th.desc { white-space: normal; min-width: 220px; }
.tbl td.right, .tbl th.right { text-align: right; font-variant-numeric: tabular-nums; }
.tbl td.mono { font-family: ui-monospace, monospace; }
.tbl .sub { display: block; font-size: 0.7rem; color: var(--texto-suave); white-space: normal; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.72rem;
  font-weight: 600;
  color: #fff;
  background: #9aa5b1;
}
.badge-green { background: var(--verde); }
.badge-red { background: var(--rojo); }
.badge-amber { background: var(--ambar); }
.badge-gray { background: #9aa5b1; }
.badge-blue { background: var(--azul-claro); }

/* ── Tarjetas ───────────────────────────────────────────────────────────── */
.card {
  background: #fff;
  border: 1px solid var(--gris-borde);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
}
.card h2 { margin: 0; font-size: 1.05rem; }
.card h3 {
  margin: 0 0 10px;
  font-size: 0.9rem;
  color: var(--texto-suave);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px 16px;
  font-size: 0.85rem;
}
.grid + .grid { margin-top: 10px; }
.grid .lbl { display: block; font-size: 0.72rem; color: var(--texto-suave); }
.grid-nums .num { font-variant-numeric: tabular-nums; }
.grid-nums .num.strong { font-weight: 700; color: var(--azul); }

/* ── Dashboard ──────────────────────────────────────────────────────────── */
.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.tile {
  background: #fff;
  border: 1px solid var(--gris-borde);
  border-radius: 8px;
  padding: 14px 16px;
}
.tile .tile-lbl {
  display: block;
  font-size: 0.72rem;
  color: var(--texto-suave);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.tile .tile-val {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  margin-top: 4px;
  color: var(--azul);
}
.tile .tile-sub { font-size: 0.75rem; color: var(--texto-suave); }
.tile.alerta .tile-val { color: var(--ambar); }

.dos-columnas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
}

.barra {
  display: block;
  height: 6px;
  border-radius: 3px;
  background: var(--azul-claro);
  min-width: 2px;
}

.vacio {
  text-align: center;
  color: var(--texto-suave);
  padding: 28px 16px;
  font-size: 0.88rem;
}

.footer {
  border-top: 1px solid var(--gris-borde);
  padding: 14px 24px;
  color: var(--texto-suave);
  font-size: 0.78rem;
}
.footer p { margin: 0; }

@media (max-width: 800px) {
  .layout { flex-direction: column; }
  .sidebar {
    width: 100%;
    flex: none;
    height: auto;
    position: static;
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
  }
  .brand { border-bottom: none; padding: 12px 16px; }
  .nav { flex-direction: row; flex-wrap: wrap; padding: 0 8px; flex: 1; }
  .nav-btn { border-left: none; border-bottom: 3px solid transparent; padding: 10px 12px; }
  .nav-btn.active { border-left: none; border-bottom-color: #fff; }
  .sidebar-foot { border-top: none; gap: 10px; }
  .container, .topbar, .footer { padding-left: 16px; padding-right: 16px; }
  .form-inline { flex-direction: column; align-items: stretch; }
}