:root {
  --bs-primary: #2563eb;
  --bs-primary-rgb: 37, 99, 235;
  --app-bg: #f3f4f6;
  --app-card-radius: 0.9rem;
  --app-card-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

body {
  background-color: var(--app-bg);
}

/* Navbar */
.navbar {
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
}

.navbar-brand {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.navbar-nav .nav-link {
  font-weight: 500;
  padding-inline: 1rem;
}

/* Cards & layout */
.card {
  border-radius: var(--app-card-radius);
  border: none;
  box-shadow: var(--app-card-shadow);
}

.card-title {
  font-weight: 600;
}

.card h6.text-muted {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

/* Buttons */
.btn {
  border-radius: 999px;
  font-weight: 500;
}

/* Tables */
.table {
  margin-bottom: 0;
}

.table thead th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Forms */
form .form-label {
  font-weight: 500;
}

.form-control, .form-select {
  border-radius: 0.6rem;
}

/* Main container */
.main-container {
  padding-top: 1.5rem;
  padding-bottom: 2.5rem;
}

/* Mobile tweaks */
@media (max-width: 576px) {
  .navbar-brand {
    font-size: 1rem;
  }

  .card {
    box-shadow: 0 6px 16px rgba(15, 23, 42, 0.12);
  }

  .table-responsive {
    border-radius: 0.8rem;
    background: #ffffff;
    padding: 0.5rem;
  }

  .btn {
    padding-block: 0.6rem;
  }
}

.app-logo {
  height: 44px;
  width: auto;
}

@media (max-width: 768px) {
  .app-logo {
    height: 36px;
  }
}