/* ===========================
   Responsive Design
   Mobile-first approach
   =========================== */

/* ===========================
   Base (Mobile < 768px)
   =========================== */
.sidebar {
  transform: translateX(-100%);
}

.sidebar.sidebar-open {
  transform: translateX(0);
}

.main-content.with-sidebar {
  margin-left: 0;
}

.mobile-menu-btn.hidden {
  display: none;
}

.menu-toggle {
  display: block;
}

.table th,
.table td {
  padding: var(--space-sm);
  font-size: var(--font-size-sm);
}

.card-grid {
  grid-template-columns: 1fr;
}

.page-header {
  flex-direction: column;
  align-items: flex-start;
}

.filter-bar {
  flex-direction: column;
  align-items: stretch;
}

.filter-bar .form-select {
  width: 100%;
}

.toast-container {
  top: var(--space-sm);
  right: var(--space-sm);
  left: var(--space-sm);
}

.toast {
  max-width: 100%;
}

.landing-content {
  padding: var(--space-md);
}

.logo-icon {
  font-size: 3.5rem;
}

.logo-text {
  font-size: var(--font-size-2xl);
}

.login-form {
  padding: var(--space-lg);
  margin: 0 var(--space-sm);
}

/* ===========================
   Tablet (768px - 1024px)
   =========================== */
@media (min-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.sidebar-open {
    transform: translateX(0);
  }

  .main-content.with-sidebar {
    margin-left: 0;
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-header {
    flex-direction: row;
    align-items: center;
  }

  .filter-bar {
    flex-direction: row;
    align-items: center;
  }

  .filter-bar .form-select {
    width: auto;
    min-width: 180px;
  }

  .table th,
  .table td {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-base);
  }

  .logo-icon {
    font-size: 4rem;
  }

  .logo-text {
    font-size: var(--font-size-3xl);
  }

  .login-form {
    padding: var(--space-xl);
    margin: 0 auto;
  }

  .toast-container {
    top: var(--space-lg);
    right: var(--space-lg);
    left: auto;
  }

  .toast {
    max-width: 400px;
  }
}

/* ===========================
   Desktop (> 1024px)
   =========================== */
@media (min-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.sidebar-open {
    transform: translateX(0);
  }

  .sidebar.hidden {
    display: none;
  }

  .main-content.with-sidebar {
    margin-left: 0;
  }

  .mobile-menu-btn {
    display: flex !important;
  }

  .mobile-menu-btn.hidden {
    display: none !important;
  }

  .menu-toggle {
    display: block;
  }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }

  .logo-icon {
    font-size: 5rem;
  }
}