/* =============================================
   RESPONSIVE BREAKPOINTS
   ============================================= */

/* ---------- Tablet (≤ 1024px) ---------- */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 240px;
  }

  .split-panel.three-col {
    grid-template-columns: 220px 1fr 280px;
  }

  .arch-flow {
    gap: 0;
    padding: 20px 8px;
  }

  .arch-node .node-box {
    padding: 12px 14px;
    min-width: 100px;
  }

  .arch-arrow {
    width: 30px;
    font-size: 18px;
  }

  .workflow-step {
    min-width: 130px;
  }

  .workflow-arrow {
    width: 32px;
  }

  .login-illustration-panel {
    display: none;
  }

  .login-form-panel {
    flex: 1;
  }
}

/* ---------- Tablet Portrait (≤ 768px) ---------- */
@media (max-width: 768px) {
  /* Sidebar becomes overlay */
  .sidebar {
    transform: translateX(-100%);
    box-shadow: none;
  }

  .sidebar.mobile-open {
    transform: translateX(0);
    box-shadow: var(--shadow-xl);
  }

  .sidebar.collapsed {
    width: var(--sidebar-width);
    transform: translateX(-100%);
  }

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

  .mobile-sidebar-toggle {
    display: flex;
  }

  .topnav {
    left: 0 !important;
  }

  .main-content {
    margin-left: 0 !important;
  }

  .sidebar.collapsed ~ .topnav {
    left: 0 !important;
  }

  .sidebar.collapsed ~ .main-content {
    margin-left: 0 !important;
  }

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

  .page-header .page-actions {
    width: 100%;
  }

  /* Split panels stack vertically */
  .split-panel.three-col,
  .split-panel.two-col {
    grid-template-columns: 1fr;
    height: auto;
  }

  .split-panel .panel {
    max-height: 400px;
  }

  /* Tabs scroll */
  .nav-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nav-tabs .nav-link {
    white-space: nowrap;
    font-size: 12.5px;
    padding: 8px 14px;
  }

  /* Filter bar stacks */
  .filter-bar {
    flex-direction: column;
  }

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

  /* Tables scroll */
  .table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Dashboard metric cards */
  .metric-card .metric-value {
    font-size: 22px;
  }

  /* Topnav adjustments */
  .topnav-left .page-title {
    font-size: 15px;
  }

  .env-selector select {
    max-width: 140px;
    font-size: 12px;
  }

  /* Quick action buttons */
  .quick-action-btn {
    padding: 14px 12px;
  }

  .quick-action-btn i {
    font-size: 20px;
  }

  .quick-action-btn span {
    font-size: 11px;
  }

  /* Architecture flow stack */
  .arch-flow {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .arch-node .node-box {
    min-width: auto;
  }

  .arch-arrow {
    width: auto;
    height: 32px;
    transform: rotate(90deg);
  }

  /* Workflow flow stack */
  .workflow-flow {
    flex-direction: column;
    align-items: center;
  }

  .workflow-arrow {
    width: auto;
    height: 32px;
    transform: rotate(90deg);
  }

  .workflow-step {
    min-width: auto;
    width: 100%;
    max-width: 280px;
  }

  /* Login page */
  .login-page {
    flex-direction: column;
  }

  .login-illustration-panel {
    display: none;
  }

  .login-form-panel {
    padding: 24px;
  }

  .login-title {
    font-size: 22px;
  }

  /* Hide breadcrumb on mobile */
  .topnav-left .breadcrumb {
    display: none;
  }

  /* Deployment options */
  .deploy-option {
    padding: 14px;
  }

  .deploy-option .deploy-icon {
    font-size: 28px;
  }
}

/* ---------- Mobile (≤ 576px) ---------- */
@media (max-width: 576px) {
  .main-content {
    padding: 16px;
  }

  .topnav {
    padding: 0 16px;
    height: 56px;
  }

  .main-content {
    margin-top: 56px;
    min-height: calc(100vh - 56px);
  }

  .topnav-right {
    gap: 8px;
  }

  .theme-toggle,
  .topnav-icon-btn {
    width: 34px;
    height: 34px;
    font-size: 16px;
  }

  .user-avatar {
    width: 32px;
    height: 32px;
    font-size: 12px;
  }

  .env-selector select {
    max-width: 110px;
    padding: 4px 8px;
    font-size: 11px;
  }

  .card-body {
    padding: 16px;
  }

  .card-header {
    padding: 12px 16px;
    font-size: 14px;
  }

  .page-header h1 {
    font-size: 20px;
  }

  .btn {
    font-size: 12.5px;
    padding: 7px 12px;
  }

  .btn-lg {
    font-size: 14px;
    padding: 10px 20px;
  }

  .metric-card .metric-value {
    font-size: 20px;
  }

  .metric-card .metric-label {
    font-size: 12px;
  }

  .metric-card .metric-icon {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }

  /* Feature cards */
  .feature-card {
    padding: 16px;
  }

  .feature-card .feature-icon {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }

  /* Health cards */
  .health-card .health-icon {
    width: 48px;
    height: 48px;
    font-size: 20px;
  }

  /* Hide non-essential columns on mobile */
  .hide-mobile {
    display: none !important;
  }

  /* Login */
  .login-form-container {
    max-width: 100%;
  }

  .login-logo .logo-icon {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }

  .login-title {
    font-size: 20px;
  }

  .login-subtitle {
    font-size: 13px;
  }

  /* Modal */
  .modal-dialog {
    margin: 12px;
  }

  .modal-content {
    border-radius: var(--border-radius);
  }

  /* Code editor */
  .code-editor {
    min-height: 200px;
    font-size: 12px;
  }
}

/* ---------- Large Desktop (≥ 1440px) ---------- */
@media (min-width: 1440px) {
  .main-content {
    padding: 28px 32px;
  }

  .split-panel.three-col {
    grid-template-columns: 280px 1fr 400px;
  }
}

/* ---------- Print Styles ---------- */
@media print {
  .sidebar,
  .topnav,
  .mobile-sidebar-toggle,
  .sidebar-overlay,
  .btn,
  .page-actions {
    display: none !important;
  }

  .main-content {
    margin: 0 !important;
    padding: 0 !important;
  }

  .card {
    box-shadow: none !important;
    border: 1px solid #ddd !important;
    page-break-inside: avoid;
  }

  body {
    background: white !important;
    color: #000 !important;
  }
}