:root {
  --navy: #1f3864;
  --navy-dark: #16294a;
  --gold: #b08830;
  --bg: #f4f6f9;
}

body {
  background: var(--bg);
  font-family: 'Segoe UI', Roboto, Arial, sans-serif;
}

/* ---- Sidebar ---- */
#sidebar {
  width: 250px;
  min-height: 100vh;
  background: var(--navy);
  color: #fff;
  position: fixed;
  top: 0;
  left: 0;
  overflow-y: auto;
  z-index: 1030;
  transition: margin-left .25s ease;
}
#sidebar .brand {
  padding: 20px 18px;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
#sidebar .brand h5 { color: #fff; margin: 0; font-weight: 700; }
#sidebar .brand small { color: rgba(255,255,255,.65); }
#sidebar .nav-link {
  color: rgba(255,255,255,.82);
  padding: 10px 18px;
  font-size: .92rem;
  border-left: 3px solid transparent;
}
#sidebar .nav-link:hover { background: rgba(255,255,255,.06); color: #fff; }
#sidebar .nav-link.active {
  background: rgba(255,255,255,.10);
  border-left: 3px solid var(--gold);
  color: #fff;
  font-weight: 600;
}
#sidebar .nav-section {
  padding: 14px 18px 4px;
  font-size: .72rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: rgba(255,255,255,.45);
}

#main {
  margin-left: 250px;
  min-height: 100vh;
}
.topbar {
  background: #fff;
  border-bottom: 1px solid #e3e6ea;
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.content-wrap { padding: 24px; }

.card { border: none; border-radius: 10px; box-shadow: 0 1px 4px rgba(0,0,0,.06); }
.card-header { background: #fff; border-bottom: 1px solid #eef0f3; font-weight: 600; color: var(--navy); border-radius: 10px 10px 0 0 !important; }
.btn-primary { background: var(--navy); border-color: var(--navy); }
.btn-primary:hover { background: var(--navy-dark); border-color: var(--navy-dark); }
.table thead th { background: var(--navy); color: #fff; font-size: .82rem; white-space: nowrap; }
.table td, .table th { vertical-align: middle; font-size: .88rem; }
.badge-navy { background: var(--navy); }
.seat-cell {
  width: 90px; height: 60px; border: 1px solid #cfd5dd; border-radius: 6px;
  display: flex; align-items: center; justify-content: center; text-align: center;
  font-size: .78rem; background: #fff; padding: 4px;
}
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--navy), #2f5288);
}
.login-card { width: 380px; border-radius: 14px; }

@media (max-width: 991px) {
  #sidebar { margin-left: -250px; }
  #sidebar.show { margin-left: 0; }
  #main { margin-left: 0; }
}

@media print {
  #sidebar, .topbar, .no-print { display: none !important; }
  #main { margin-left: 0 !important; }
  body { background: #fff; }
}