:root {
  --azul: #003087;
  --vermelho: #CC0000;
  --sidebar-w: 220px;
}

/* ── Layout ── */
body {
  background: #F5F5F5;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--azul);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-brand {
  padding: 1.25rem 1rem;
  font-size: 1.1rem;
  font-weight: 700;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}
.brand-icon { font-size: 1.4rem; }

.sidebar-nav {
  list-style: none;
  padding: 0.5rem 0;
  margin: 0;
  flex: 1;
}
.sidebar-nav li .nav-link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 1rem;
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 0.9rem;
  border-radius: 0;
  transition: background 0.15s, color 0.15s;
}
.sidebar-nav li .nav-link:hover,
.sidebar-nav li .nav-link.active {
  background: rgba(255,255,255,0.15);
  color: #fff;
}
.sidebar-nav li .nav-link.active {
  border-left: 3px solid var(--vermelho);
}
.sidebar-nav li .nav-link i { font-size: 1rem; min-width: 1.2rem; }

.nav-section {
  padding: 0.75rem 1rem 0.25rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.45);
  text-transform: uppercase;
}

.sidebar-footer {
  padding: 0.75rem 1rem;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.user-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  color: rgba(255,255,255,0.85);
  font-size: 0.85rem;
}
.user-info i { font-size: 1.5rem; }

/* ── Main content ── */
.main-content {
  margin-left: var(--sidebar-w);
  padding: 1.5rem;
  min-height: 100vh;
}

/* ── Page header ── */
.page-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid #e9ecef;
}

/* ── Cards ── */
.card {
  border: none;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  border-radius: 8px;
}
.card-header {
  background: #fff;
  border-bottom: 1px solid #f0f0f0;
  padding: 0.85rem 1.25rem;
}

/* ── Buttons ── */
.btn-primary {
  background: var(--azul);
  border-color: var(--azul);
}
.btn-primary:hover, .btn-primary:focus {
  background: #002470;
  border-color: #002470;
}

/* ── Login page ── */
.login-page { background: linear-gradient(135deg, #003087 0%, #001a5c 100%); }
.login-card {
  background: #fff;
  border-radius: 12px;
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}
.login-logo { font-size: 3rem; margin-bottom: 0.5rem; }

/* ── Preview container ── */
#preview-container {
  background: #ddd;
  border-radius: 6px;
  border: 1px solid #ccc;
}

/* ── Empty state ── */
.empty-state { color: #999; }

/* ── Uppercase inputs ── */
.uppercase-input { text-transform: uppercase; }

/* ── Table ── */
.table > :not(caption) > * > * { padding: 0.6rem 0.75rem; }

/* ── Badge letter spacing ── */
.letter-spacing-wide { letter-spacing: 0.15em; }

/* ── Responsive sidebar ── */
@media (max-width: 1280px) {
  .sidebar { width: 60px; }
  .sidebar .brand-text,
  .sidebar .nav-link span,
  .sidebar .nav-section,
  .sidebar .user-info div,
  .sidebar-footer .btn span { display: none; }
  .sidebar .sidebar-brand { justify-content: center; padding: 1rem 0.5rem; }
  .sidebar .nav-link { justify-content: center; padding: 0.75rem; }
  .sidebar .user-info { justify-content: center; }
  .main-content { margin-left: 60px; }
}