:root {
  --brownie-accent: #c17a45;
  --brownie-accent-hover: #a8683a;
}

body {
  background-color: #14100e;
}

.sidebar {
  width: 250px;
  min-height: 100vh;
  background-color: #1c1613;
  border-right: 1px solid rgba(255,255,255,0.08);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1.05rem;
  color: #f2e9e4;
}

.sidebar-brand i {
  color: var(--brownie-accent);
  font-size: 1.4rem;
}

.sidebar .nav-link {
  color: #cbbfb8;
  border-radius: 8px;
  padding: 0.55rem 0.8rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar .nav-link:hover {
  background-color: rgba(193,122,69,0.15);
  color: #f2e9e4;
}

.sidebar .nav-link.active {
  background-color: var(--brownie-accent);
  color: #fff;
}

.content-area {
  min-height: 100vh;
}

.card {
  border: 1px solid rgba(255,255,255,0.08);
  background-color: #1c1613;
}

.btn-brownie {
  background-color: var(--brownie-accent);
  border-color: var(--brownie-accent);
  color: #fff;
}

.btn-brownie:hover {
  background-color: var(--brownie-accent-hover);
  border-color: var(--brownie-accent-hover);
  color: #fff;
}

.stat-card .stat-value {
  font-size: 1.8rem;
  font-weight: 700;
}

.margem-positiva { color: #6fbf73; font-weight: 600; }
.margem-negativa { color: #e06a6a; font-weight: 600; }

.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top, #2a1e17, #100c0a 70%);
}

.login-card {
  width: 100%;
  max-width: 380px;
  background-color: #1c1613;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
  padding: 2.5rem;
}