/* ── Variables ─────────────────────────────────────────────────────────── */
:root {
  --sidebar-width: 240px;
  --sidebar-bg: #1e3a5f;
  --sidebar-text: #ccd9e8;
  --sidebar-active: #f0a500;
  --topbar-height: 56px;
  --body-bg: #f4f6f9;
}

/* ── Layout general ───────────────────────────────────────────────────── */
body {
  background-color: var(--body-bg);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.login-bg {
  background: linear-gradient(135deg, #1e3a5f 0%, #2c5282 100%);
}

.login-card {
  width: 100%;
  max-width: 420px;
  border-radius: 16px;
}

.login-icon {
  width: 72px; height: 72px;
  border-radius: 16px;
  background: rgba(255,255,255,0.15);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto;
}

/* ── Sidebar ──────────────────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  z-index: 1000;
  transition: transform 0.3s ease;
}

.sidebar.collapsed {
  transform: translateX(calc(-1 * var(--sidebar-width)));
}

.sidebar-header {
  padding: 1.25rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
}

.sidebar-brand {
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.5px;
}

.sidebar-company {
  padding: 0.5rem 1rem;
  color: var(--sidebar-text);
  font-size: 0.78rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-nav {
  flex: 1;
  padding: 0.5rem 0;
}

.sidebar-sep {
  padding: 0.75rem 1rem 0.25rem;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: rgba(255,255,255,0.35);
  font-weight: 600;
}

.sidebar-link {
  display: flex;
  align-items: center;
  padding: 0.6rem 1rem;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 0.875rem;
  transition: background 0.15s, color 0.15s;
  border-radius: 0;
}

.sidebar-link:hover {
  background: rgba(255,255,255,0.08);
  color: #fff;
}

.sidebar-link.active {
  background: rgba(240,165,0,0.15);
  color: var(--sidebar-active);
  font-weight: 600;
  border-right: 3px solid var(--sidebar-active);
}

.sidebar-footer {
  padding: 0.75rem 1rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

/* ── Contenido principal ──────────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  transition: margin-left 0.3s ease;
}

.main-content.expanded {
  margin-left: 0;
}

.topbar {
  height: var(--topbar-height);
  background: #fff;
  border-bottom: 1px solid #e9ecef;
  position: sticky;
  top: 0;
  z-index: 100;
}

.page-body {
  max-width: 1400px;
}

/* ── KPI Cards ────────────────────────────────────────────────────────── */
.kpi-card .card-body {
  padding: 1.25rem;
}

.kpi-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.kpi-value {
  font-size: 2rem;
  font-weight: 800;
  color: #1a202c;
  line-height: 1;
}

.kpi-label {
  font-size: 0.78rem;
  color: #6c757d;
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ── Tablas ───────────────────────────────────────────────────────────── */
.table th {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  color: #6c757d;
}

/* ── Peso display ─────────────────────────────────────────────────────── */
#pesoDisplay {
  transition: all 0.3s;
}

#pesoDisplay.activo {
  background: #e8f5e9 !important;
  border: 2px solid #4caf50;
}

/* ── Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(calc(-1 * var(--sidebar-width)));
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0;
  }
}