/* ═══════════════════════════════════════════════════════════════
   Azure Platform Studio — Dark Theme
   Modern SaaS aesthetic: glassmorphism, gradients, micro-animations
   ═══════════════════════════════════════════════════════════════ */

/* ── Design Tokens ─────────────────────────────────────────────── */
:root {
  /* Backgrounds */
  --bg-base: #0a0e1a;
  --bg-surface: #111827;
  --bg-elevated: #1a2332;
  --bg-glass: rgba(26, 35, 50, 0.72);
  --bg-glass-hover: rgba(30, 41, 59, 0.85);
  --bg-input: rgba(15, 23, 35, 0.6);
  --bg-sidebar: rgba(17, 24, 39, 0.88);

  /* Azure accent */
  --azure: #2b9fff;
  --azure-bright: #4db5ff;
  --azure-dark: #0078d4;
  --azure-glow: rgba(43, 159, 255, 0.35);
  --azure-soft: rgba(43, 159, 255, 0.1);

  /* Text */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-bright: #ffffff;

  /* Borders */
  --border-subtle: rgba(148, 163, 184, 0.1);
  --border-default: rgba(148, 163, 184, 0.18);
  --border-hover: rgba(43, 159, 255, 0.4);
  --border-active: rgba(43, 159, 255, 0.6);

  /* Status */
  --green: #34d399;
  --green-bg: rgba(52, 211, 153, 0.12);
  --amber: #fbbf24;
  --amber-bg: rgba(251, 191, 36, 0.12);
  --red: #f87171;
  --red-bg: rgba(248, 113, 113, 0.12);
  --purple: #a78bfa;
  --purple-bg: rgba(167, 139, 250, 0.12);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--azure-glow);

  /* Gradients */
  --gradient-azure: linear-gradient(135deg, #2b9fff 0%, #0078d4 100%);
  --gradient-surface: linear-gradient(180deg, rgba(26,35,50,0.95) 0%, rgba(17,24,39,0.95) 100%);
  --gradient-glow: radial-gradient(ellipse at top, rgba(43,159,255,0.06) 0%, transparent 60%);

  /* Radii */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 20px;
  --r-pill: 999px;

  /* Transitions */
  --t-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --t-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --t-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  /* Typography */
  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ── Reset & Base ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 14px; }

body {
  background: var(--bg-base);
  color: var(--text-primary);
  font: 14px/1.6 var(--font-sans);
  min-height: 100vh;
  overflow-x: hidden;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(43,159,255,0.08), transparent),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(123,97,255,0.05), transparent);
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(148,163,184,0.2); border-radius: var(--r-pill); }
::-webkit-scrollbar-thumb:hover { background: rgba(148,163,184,0.35); }

/* ── Top Bar ───────────────────────────────────────────────────── */
.topbar {
  height: 64px;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-bright);
  text-decoration: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  background: var(--gradient-azure);
  font-weight: 900;
  font-size: 20px;
  box-shadow: 0 4px 14px var(--azure-glow);
  transition: var(--t-normal);
}

.brand-mark:hover { transform: scale(1.08) rotate(5deg); }

.brand strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand small {
  display: block;
  color: var(--text-muted);
  font-size: 11px;
  margin-top: 1px;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.region-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--border-default);
  background: var(--bg-elevated);
  border-radius: var(--r-pill);
  padding: 7px 12px;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
}

.region-pill i, .footer-status i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px rgba(52,211,153,0.5);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ── Buttons ───────────────────────────────────────────────────── */
.button {
  border: 0;
  border-radius: var(--r-sm);
  padding: 10px 16px;
  font: 600 13px var(--font-sans);
  cursor: pointer;
  transition: var(--t-fast);
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.button::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx,50%) var(--my,50%), rgba(255,255,255,0.15), transparent 50%);
  opacity: 0;
  transition: var(--t-fast);
  pointer-events: none;
}

.button:hover::after { opacity: 1; }

.button.primary, .button.azure {
  background: var(--gradient-azure);
  color: white;
  box-shadow: 0 4px 14px var(--azure-glow);
}

.button.primary:hover, .button.azure:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--azure-glow);
}

.button.secondary {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
}

.button.secondary:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
}

.button.ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
}

.button.ghost:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.button.danger {
  background: var(--red-bg);
  color: var(--red);
}

.button[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

/* ── App Shell ─────────────────────────────────────────────────── */
.app-shell {
  display: grid;
  grid-template-columns: 268px minmax(0, 1fr);
  min-height: calc(100vh - 64px);
}

/* ── Sidebar ───────────────────────────────────────────────────── */
.sidebar {
  background: var(--bg-sidebar);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--border-subtle);
  padding: 24px 18px;
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

/* Progress Ring */
.progress-ring-container {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.progress-ring {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  position: relative;
}

.progress-ring svg {
  transform: rotate(-90deg);
}

.progress-ring circle {
  fill: none;
  stroke-width: 4;
  stroke-linecap: round;
}

.progress-ring .track {
  stroke: var(--border-default);
}

.progress-ring .fill {
  stroke: url(#progress-gradient);
  stroke-dasharray: 138.2;
  transition: stroke-dashoffset var(--t-slow);
  filter: drop-shadow(0 0 4px var(--azure-glow));
}

.progress-ring-text {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 800;
  color: var(--azure-bright);
}

.progress-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.progress-copy span {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.progress-copy strong {
  font-size: 15px;
  color: var(--text-bright);
}

/* Hide old progress bar */
.progress-track { display: none; }

/* Step Navigation */
#steps {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.step-button {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  width: 100%;
  border: 0;
  background: transparent;
  text-align: left;
  padding: 10px 10px;
  border-radius: var(--r-md);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--t-fast);
  position: relative;
}

.step-button::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0;
  background: var(--azure);
  border-radius: var(--r-pill);
  transition: var(--t-normal);
}

.step-button:hover {
  background: var(--bg-elevated);
  color: var(--text-secondary);
}

.step-button.active {
  background: var(--azure-soft);
  color: var(--azure-bright);
}

.step-button.active::before {
  height: 60%;
  box-shadow: 0 0 8px var(--azure-glow);
}

.step-button.complete {
  color: var(--text-secondary);
}

.step-number {
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  border-radius: var(--r-sm);
  background: var(--bg-elevated);
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 800;
  transition: var(--t-fast);
}

.step-button.active .step-number {
  background: var(--gradient-azure);
  color: white;
  box-shadow: 0 2px 8px var(--azure-glow);
}

.step-button.complete .step-number {
  background: var(--green-bg);
  color: var(--green);
}

.step-button strong {
  display: block;
  font-size: 12px;
  font-weight: 600;
  margin-top: 2px;
}

.step-button small {
  display: block;
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Help Card */
.help-card {
  margin-top: auto;
  padding: 16px;
  border-radius: var(--r-md);
  background: var(--bg-glass);
  border: 1px solid var(--border-default);
  backdrop-filter: blur(10px);
}

.help-card .icon-bubble {
  float: left;
  margin-right: 10px;
  background: var(--azure-soft);
  color: var(--azure-bright);
}

.help-card strong {
  font-size: 11px;
  color: var(--text-primary);
}

.help-card p {
  font-size: 10px;
  color: var(--text-muted);
  margin: 5px 0 0 32px;
  line-height: 1.5;
}

/* ── Main Content ──────────────────────────────────────────────── */
main {
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  padding: 32px 38px 60px;
}

.page-heading, .review-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 28px;
}

.eyebrow {
  display: inline-block;
  color: var(--azure-bright);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
  padding: 3px 10px;
  background: var(--azure-soft);
  border-radius: var(--r-pill);
}

h1 {
  font-size: 30px;
  line-height: 1.2;
  letter-spacing: -0.03em;
  font-weight: 800;
  color: var(--text-bright);
  margin-bottom: 8px;
}

h2 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--text-bright);
}

h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.page-heading p, .review-heading p {
  color: var(--text-secondary);
  max-width: 700px;
  font-size: 14px;
}

.icon-button {
  width: 38px;
  height: 38px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border-default);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 16px;
  transition: var(--t-fast);
  display: grid;
  place-items: center;
}

.icon-button:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

/* ── Section Cards (Glassmorphism) ─────────────────────────────── */
.section-card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-default);
  border-radius: var(--r-lg);
  padding: 22px;
  margin-bottom: 16px;
  transition: var(--t-normal);
  animation: card-appear var(--t-normal) ease-out;
}

@keyframes card-appear {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-card:hover {
  border-color: var(--border-subtle);
  box-shadow: var(--shadow-md);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 18px;
}

.section-head p {
  margin-top: 4px;
  color: var(--text-secondary);
  font-size: 12px;
}

/* ── Choice Cards ──────────────────────────────────────────────── */
.choice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.choice-grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.choice-card {
  position: relative;
  display: block;
  border: 1px solid var(--border-default);
  border-radius: var(--r-md);
  padding: 16px;
  background: var(--bg-elevated);
  cursor: pointer;
  transition: var(--t-normal);
  min-height: 112px;
  overflow: hidden;
}

.choice-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-azure);
  opacity: 0;
  transition: var(--t-normal);
  pointer-events: none;
}

.choice-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3), 0 0 0 1px var(--border-hover);
}

.choice-card.selected {
  border-color: var(--azure);
  background: var(--azure-soft);
  box-shadow: 0 0 0 1px var(--azure), 0 8px 24px var(--azure-glow);
}

.choice-card.selected::before { opacity: 0.03; }

.choice-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.choice-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--r-sm);
  display: grid;
  place-items: center;
  background: var(--azure-soft);
  color: var(--azure-bright);
  font-weight: 800;
  margin-bottom: 12px;
  font-size: 15px;
  transition: var(--t-normal);
}

.choice-card:hover .choice-icon, .choice-card.selected .choice-icon {
  background: var(--gradient-azure);
  color: white;
  transform: scale(1.05);
}

.choice-card strong {
  display: block;
  font-size: 13px;
  color: var(--text-primary);
}

.choice-card small {
  display: block;
  color: var(--text-muted);
  font-size: 11px;
  margin-top: 5px;
  line-height: 1.5;
}

.cost-hint {
  position: absolute;
  right: 10px;
  top: 10px;
  font-size: 9px;
  font-weight: 800;
  color: var(--amber);
  background: var(--amber-bg);
  border-radius: var(--r-pill);
  padding: 3px 8px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ── Forms ─────────────────────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 16px;
}

.form-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.field {
  position: relative;
}

.field label {
  display: block;
  font-weight: 600;
  font-size: 11px;
  margin-bottom: 6px;
  color: var(--text-secondary);
}

.field small {
  display: block;
  color: var(--text-muted);
  font-size: 10px;
  margin-top: 5px;
}

.field input, .field select {
  width: 100%;
  border: 1px solid var(--border-default);
  border-radius: var(--r-sm);
  padding: 11px 12px;
  background: var(--bg-input);
  color: var(--text-primary);
  font: inherit;
  outline: 0;
  transition: var(--t-fast);
}

.field input::placeholder {
  color: var(--text-muted);
}

.field input:focus, .field select:focus {
  border-color: var(--azure);
  box-shadow: 0 0 0 3px var(--azure-soft);
  background: rgba(15,23,35,0.8);
}

.field select option {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

/* Floating label effect */
.field input:not(:placeholder-shown) + small,
.field input:focus + small {
  color: var(--azure-bright);
}

/* ── Toggle Switches ───────────────────────────────────────────── */
.inline-check {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.inline-check:last-child { border: 0; }

.inline-check p {
  margin: 3px 0 0;
  color: var(--text-muted);
  font-size: 11px;
}

.switch {
  width: 44px;
  height: 24px;
  border-radius: var(--r-pill);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  position: relative;
  cursor: pointer;
  flex: 0 0 auto;
  transition: var(--t-normal);
}

.switch input { opacity: 0; }

.switch i {
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--text-muted);
  top: 2px;
  left: 2px;
  transition: var(--t-normal);
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

.switch.on {
  background: var(--gradient-azure);
  border-color: var(--azure);
  box-shadow: 0 0 12px var(--azure-glow);
}

.switch.on i {
  left: 22px;
  background: white;
}

/* ── Recommendations ───────────────────────────────────────────── */
.recommendation {
  display: flex;
  gap: 10px;
  border: 1px solid var(--border-default);
  background: var(--bg-elevated);
  border-radius: var(--r-md);
  padding: 13px 14px;
  margin-top: 14px;
}

.recommendation.warn {
  border-color: rgba(251,191,36,0.3);
  background: var(--amber-bg);
}

.recommendation strong {
  display: block;
  font-size: 11px;
  color: var(--text-primary);
}

.recommendation p {
  color: var(--text-secondary);
  font-size: 11px;
  margin: 3px 0 0;
  line-height: 1.5;
}

.icon-bubble {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: var(--r-sm);
  background: var(--azure-soft);
  color: var(--azure-bright);
  font-weight: 900;
  font-size: 11px;
  flex: 0 0 auto;
}

.recommendation.warn .icon-bubble {
  background: rgba(251,191,36,0.2);
  color: var(--amber);
}

/* ── Wizard Footer ─────────────────────────────────────────────── */
.wizard-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 28px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 20px;
}

.footer-status {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--text-muted);
  font-size: 11px;
}

/* ── Templates Bar ─────────────────────────────────────────────── */
.templates-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.template-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  background: var(--bg-glass);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--t-fast);
}

.template-chip:hover {
  background: var(--bg-elevated);
  border-color: var(--border-hover);
  color: var(--azure-bright);
  transform: translateY(-1px);
}

.template-chip i {
  font-style: normal;
  font-size: 14px;
}

/* ── Toolbar (Undo/Redo/Share) ─────────────────────────────────── */
.design-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 20px;
}

.tool-btn {
  width: 34px;
  height: 34px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border-default);
  background: var(--bg-glass);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 15px;
  display: grid;
  place-items: center;
  transition: var(--t-fast);
}

.tool-btn:hover:not([disabled]) {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.tool-btn[disabled] {
  opacity: 0.3;
  cursor: not-allowed;
}

.tool-divider {
  width: 1px;
  height: 20px;
  background: var(--border-default);
  margin: 0 4px;
}

.share-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  border-radius: var(--r-pill);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.share-badge.live {
  background: var(--green-bg);
  color: var(--green);
}

.share-badge.estimated {
  background: var(--amber-bg);
  color: var(--amber);
}

/* ── Review Grid ───────────────────────────────────────────────── */
.review-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.55fr);
  gap: 18px;
}

/* ── Topology Card ─────────────────────────────────────────────── */
.topology-card {
  background: var(--gradient-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--r-lg);
  padding: 20px;
  color: white;
  min-height: 470px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.topology-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
}

.topology-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--azure-glow), transparent 70%);
  pointer-events: none;
}

.topology-head {
  display: flex;
  justify-content: space-between;
  position: relative;
  z-index: 2;
}

.topology-head h2 { color: white; }

.topology-head p {
  color: var(--text-secondary);
  margin: 4px 0 0;
  font-size: 11px;
}

.topology-map {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 390px;
}

.topology-map svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.topology-node {
  cursor: pointer;
  transition: var(--t-normal);
}

.topology-node:hover rect {
  filter: brightness(1.2);
}

.topology-node rect {
  fill: rgba(23,35,55,0.9);
  stroke: rgba(87,112,143,0.5);
  stroke-width: 1.2;
  transition: var(--t-fast);
}

.topology-node:hover rect {
  stroke: var(--azure);
  filter: drop-shadow(0 0 8px var(--azure-glow));
}

.topology-node.core rect {
  fill: rgba(10,101,167,0.5);
  stroke: rgba(86,178,242,0.6);
}

.topology-node.workload rect {
  fill: rgba(23,60,72,0.5);
  stroke: rgba(66,170,145,0.5);
}

.topology-node text {
  fill: #f1f5f9;
  font: 700 11px var(--font-sans);
}

.topology-node .sub {
  fill: #94a3b8;
  font: 400 9px var(--font-sans);
}

.topology-line {
  stroke: rgba(102,129,159,0.6);
  stroke-width: 1.5;
  fill: none;
  animation: flow 3s linear infinite;
  stroke-dasharray: 5 0;
}

.topology-line.secure {
  stroke: rgba(54,185,152,0.6);
  stroke-dasharray: 5 4;
}

@keyframes flow {
  from { stroke-dashoffset: 0; }
  to { stroke-dashoffset: -18; }
}

/* ── Summary & Cost Cards ──────────────────────────────────────── */
.summary-card, .cost-card, .attention-card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-default);
  border-radius: var(--r-lg);
  padding: 18px;
  margin-bottom: 14px;
  transition: var(--t-normal);
}

.summary-card h2 { margin-bottom: 14px; }

.summary-list {
  list-style: none;
  padding: 0;
  margin: 13px 0 0;
}

.summary-list li {
  display: flex;
  gap: 9px;
  margin-bottom: 10px;
  color: var(--text-secondary);
  font-size: 12px;
  line-height: 1.5;
}

.check {
  color: var(--green);
  font-weight: 900;
  flex-shrink: 0;
}

/* Cost Card */
.cost-total {
  font-size: 32px;
  letter-spacing: -0.04em;
  font-weight: 800;
  margin: 8px 0 2px;
  color: var(--text-bright);
  background: var(--gradient-azure);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cost-range {
  color: var(--text-muted);
  font-size: 11px;
}

.cost-row {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding: 10px 0;
  font-size: 12px;
}

.cost-row strong {
  color: var(--text-primary);
}

.cost-row span {
  color: var(--text-muted);
}

.notice {
  display: flex;
  gap: 9px;
  padding: 11px;
  border-radius: var(--r-sm);
  background: var(--amber-bg);
  color: var(--amber);
  margin-top: 10px;
  font-size: 10px;
  line-height: 1.5;
}

/* ── View Toggle ───────────────────────────────────────────────── */
.view-toggle {
  display: flex;
  padding: 3px;
  border-radius: var(--r-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
}

.view-toggle button {
  border: 0;
  background: transparent;
  padding: 7px 12px;
  border-radius: 5px;
  color: var(--text-muted);
  cursor: pointer;
  font: 600 11px var(--font-sans);
  transition: var(--t-fast);
}

.view-toggle button:hover {
  color: var(--text-secondary);
}

.view-toggle button.active {
  background: var(--bg-glass-hover);
  color: var(--azure-bright);
  box-shadow: var(--shadow-sm);
}

/* ── Technical Table ───────────────────────────────────────────── */
.technical-table {
  width: 100%;
  border-collapse: collapse;
}

.technical-table th, .technical-table td {
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  padding: 10px;
  font-size: 11px;
}

.technical-table th {
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 9px;
  letter-spacing: 0.05em;
  font-weight: 700;
}

.technical-table td {
  color: var(--text-secondary);
}

.technical-table td strong {
  color: var(--text-primary);
}

/* ── Review Actions ────────────────────────────────────────────── */
.review-actions {
  display: flex;
  justify-content: flex-end;
  gap: 9px;
  margin-top: 20px;
}

/* ── Toast ─────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 200;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  padding: 14px 18px;
  border-radius: var(--r-md);
  box-shadow: var(--shadow-lg);
  transform: translateY(80px);
  opacity: 0;
  transition: var(--t-normal);
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toast.show {
  transform: none;
  opacity: 1;
}

.toast::before {
  content: '✓';
  color: var(--green);
  font-weight: 900;
}

/* ── Modal / Dialog ────────────────────────────────────────────── */
dialog {
  border: 0;
  border-radius: var(--r-xl);
  padding: 0;
  box-shadow: var(--shadow-lg);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  width: min(640px, calc(100% - 32px));
}

dialog::backdrop {
  background: rgba(5,10,20,0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

#modal-content { padding: 28px; }

.modal-close {
  position: absolute;
  right: 14px;
  top: 14px;
  border: 0;
  background: var(--bg-elevated);
  border-radius: 50%;
  width: 30px;
  height: 30px;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 16px;
  transition: var(--t-fast);
}

.modal-close:hover {
  background: var(--red-bg);
  color: var(--red);
}

.modal-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  background: var(--azure-soft);
  color: var(--azure-bright);
  display: grid;
  place-items: center;
  font-size: 22px;
  margin-bottom: 16px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 22px;
}

/* ── Dependency List ───────────────────────────────────────────── */
.dependency-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 12px;
}

.dependency-item {
  padding: 10px;
  border-radius: var(--r-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  font-size: 11px;
  color: var(--text-secondary);
  transition: var(--t-fast);
}

.dependency-item:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

/* ── Metric Grid ───────────────────────────────────────────────── */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 0 0 16px;
}

.metric-grid > div {
  padding: 12px;
  border-radius: var(--r-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
}

.metric-grid span {
  display: block;
  font-size: 9px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
}

.metric-grid strong {
  display: block;
  font-size: 16px;
  margin-top: 4px;
  color: var(--azure-bright);
}

/* ── Hidden Utility ────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Print Styles ──────────────────────────────────────────────── */
@media print {
  body {
    background: white !important;
    color: #000 !important;
  }
  .topbar, .sidebar, .wizard-footer, .review-actions, .view-toggle,
  .design-toolbar, .templates-bar, .footer-status,
  .view-mode-toggle, .naming-item .copy-btn,
  #comparison-view {
    display: none !important;
  }
  body.customer-view .engineer-only {
    display: none !important;
  }
  .app-shell { grid-template-columns: 1fr; }
  main { padding: 20px; max-width: 100%; }
  .section-card, .summary-card, .cost-card, .attention-card {
    background: white !important;
    border: 1px solid #ccc !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    color: #000 !important;
    break-inside: avoid;
  }
  .topology-card {
    background: #1a2332 !important;
    break-inside: avoid;
  }
  h1, h2, h3, p, li, td, th, strong, small, span { color: inherit !important; }
  .cost-total {
    -webkit-text-fill-color: #0078d4 !important;
    color: #0078d4 !important;
  }
  .review-grid { grid-template-columns: 1fr; }
  .toast { display: none !important; }
}

/* ── Help Tooltips ─────────────────────────────────────────────── */
.help-tip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid var(--border-default);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 700;
  cursor: help;
  margin-left: 6px;
  position: relative;
  transition: all 0.2s;
}
.help-tip:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}
.help-tip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  background: #1a2332;
  border: 1px solid var(--border-default);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 12px;
  font-weight: 400;
  color: var(--text-primary);
  white-space: normal;
  width: max-content;
  max-width: 280px;
  text-align: left;
  line-height: 1.5;
  box-shadow: 0 8px 24px rgba(0,0,0,0.6);
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s;
  z-index: 10000;
  pointer-events: none;
}
.help-tip::before {
  content: '';
  position: absolute;
  bottom: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--border-default);
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s;
  z-index: 10000;
}
.help-tip:hover::after,
.help-tip:hover::before {
  opacity: 1;
  visibility: visible;
}

/* ── Live Cost Preview (Floating Sidebar) ─────────────────────── */
.cost-preview {
  display: none; /* Hidden by default - removed yellow bubble */
}

/* ── View Mode Toggle (Customer/Engineer) ─────────────────────── */
.view-mode-toggle {
  display: flex;
  padding: 3px;
  border-radius: var(--r-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
}

.view-mode-btn {
  border: 0;
  background: transparent;
  padding: 6px 12px;
  border-radius: 5px;
  color: var(--text-muted);
  cursor: pointer;
  font: 600 11px var(--font-sans);
  transition: var(--t-fast);
  white-space: nowrap;
}

.view-mode-btn:hover {
  color: var(--text-secondary);
}

.view-mode-btn.active {
  background: var(--azure-soft);
  color: var(--azure-bright);
  box-shadow: var(--shadow-sm);
}

/* Customer View adjustments */
body.customer-view .engineer-only,
body.customer-view .help-tip,
body.customer-view .technical-table,
body.customer-view .metric-grid,
body.customer-view #design-toolbar,
body.customer-view .dependency-list,
body.customer-view .section-card.engineer-only {
  display: none !important;
}

body.customer-view .topology-node text {
  font-size: 12px !important;
}

body.customer-view .topology-node .sub {
  display: none;
}

body.customer-view .cost-breakdown-detail {
  display: none;
}

body.customer-view .cost-per-user-card {
  display: block !important;
}

/* ── Review Header Actions ────────────────────────────────────── */
.review-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ── Cost Per User ────────────────────────────────────────────── */
.cost-per-user-card {
  background: linear-gradient(135deg, rgba(43,159,255,0.08) 0%, rgba(0,120,212,0.04) 100%);
  border: 1px solid rgba(43,159,255,0.25);
  border-radius: var(--r-md);
  padding: 16px;
  margin-bottom: 14px;
  text-align: center;
}

.cost-per-user-card .cpu-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.cost-per-user-card .cpu-value {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--azure-bright);
  margin: 4px 0 2px;
}

.cost-per-user-card .cpu-sub {
  font-size: 10px;
  color: var(--text-muted);
}

/* ── Design Notes ─────────────────────────────────────────────── */
.design-notes-section {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-default);
  border-radius: var(--r-lg);
  padding: 18px;
  margin-bottom: 14px;
}

.design-notes-section .notes-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.design-notes-section h2 {
  font-size: 15px;
}

.notes-visibility-toggle {
  font-size: 10px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.notes-visibility-toggle input {
  margin: 0;
}

.notes-editor {
  width: 100%;
  min-height: 100px;
  border: 1px solid var(--border-default);
  border-radius: var(--r-sm);
  padding: 12px;
  background: var(--bg-input);
  color: var(--text-primary);
  font: 13px/1.6 var(--font-sans);
  resize: vertical;
  outline: 0;
  transition: var(--t-fast);
}

.notes-editor:focus {
  border-color: var(--azure);
  box-shadow: 0 0 0 3px var(--azure-soft);
}

.notes-editor::placeholder {
  color: var(--text-muted);
}

/* ── Comparison Mode ──────────────────────────────────────────── */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}

.comparison-column {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-default);
  border-radius: var(--r-lg);
  padding: 18px;
}

.comparison-column.option-a {
  border-color: rgba(43,159,255,0.3);
}

.comparison-column.option-b {
  border-color: rgba(167,139,250,0.3);
}

.comparison-column h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.comparison-column .compare-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.comparison-column .compare-cost {
  font-size: 24px;
  font-weight: 800;
  color: var(--azure-bright);
  margin: 8px 0;
}

.comparison-column .compare-per-user {
  font-size: 12px;
  color: var(--text-muted);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-glass);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--border-default);
  margin-bottom: 18px;
}

.comparison-table th, .comparison-table td {
  padding: 12px 14px;
  font-size: 12px;
  border-bottom: 1px solid var(--border-subtle);
  text-align: left;
}

.comparison-table th {
  background: var(--bg-elevated);
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 9px;
  letter-spacing: 0.05em;
  font-weight: 700;
}

.comparison-table td {
  color: var(--text-secondary);
}

.comparison-table td strong {
  color: var(--text-primary);
}

.comparison-table .diff-highlight {
  background: var(--amber-bg);
}

.comparison-table .diff-better {
  color: var(--green) !important;
}

.comparison-table .diff-worse {
  color: var(--red) !important;
}

.comparison-actions {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
}

.comparison-actions .button {
  flex: 1;
}

.comparison-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.comparison-empty h2 {
  margin-bottom: 8px;
}

.comparison-empty p {
  margin-bottom: 20px;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Resource Naming ──────────────────────────────────────────── */
.naming-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.naming-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--r-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  transition: var(--t-fast);
}

.naming-item:hover {
  border-color: var(--border-hover);
}

.naming-item .naming-type {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  font-weight: 700;
  min-width: 60px;
}

.naming-item .naming-value {
  font-family: 'Cascadia Code', 'Fira Code', ui-monospace, monospace;
  font-size: 12px;
  color: var(--azure-bright);
  font-weight: 600;
}

.naming-item .copy-btn {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--border-default);
  color: var(--text-muted);
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 10px;
  cursor: pointer;
  transition: var(--t-fast);
}

.naming-item .copy-btn:hover {
  background: var(--azure-soft);
  color: var(--azure-bright);
  border-color: var(--azure);
}

/* ── IP/Subnet Calculator ─────────────────────────────────────── */
.subnet-calculator {
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--r-md);
  padding: 16px;
  margin-top: 14px;
}

.subnet-calc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.subnet-calc-header h3 {
  margin: 0;
}

.subnet-calc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}

.subnet-calc-stat {
  padding: 10px;
  border-radius: var(--r-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
}

.subnet-calc-stat .scs-label {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  font-weight: 600;
}

.subnet-calc-stat .scs-value {
  font-size: 15px;
  font-weight: 700;
  color: var(--azure-bright);
  margin-top: 2px;
}

.subnet-visual {
  display: flex;
  gap: 2px;
  height: 28px;
  border-radius: var(--r-sm);
  overflow: hidden;
  margin-bottom: 10px;
}

.subnet-visual-block {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 700;
  color: white;
  overflow: hidden;
  white-space: nowrap;
  transition: var(--t-fast);
}

.subnet-visual-block:hover {
  filter: brightness(1.2);
}

.subnet-visual-block.allocated {
  background: var(--azure-dark);
}

.subnet-visual-block.reserved {
  background: rgba(248,113,113,0.5);
}

.subnet-visual-block.free {
  background: rgba(52,211,153,0.3);
  border: 1px dashed rgba(52,211,153,0.5);
}

.subnet-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.subnet-list-item {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  border-radius: var(--r-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  font-size: 11px;
}

.subnet-list-item .subnet-name {
  font-weight: 600;
  color: var(--text-primary);
}

.subnet-list-item .subnet-cidr {
  font-family: 'Cascadia Code', 'Fira Code', ui-monospace, monospace;
  color: var(--azure-bright);
}

.subnet-list-item .subnet-ips {
  color: var(--text-muted);
}

.subnet-warning {
  background: var(--red-bg);
  border: 1px solid rgba(248,113,113,0.2);
  border-radius: var(--r-sm);
  padding: 8px 12px;
  font-size: 11px;
  color: var(--red);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

/* ── Prerequisites Checker ────────────────────────────────────── */
.prereqs-section {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-default);
  border-radius: var(--r-lg);
  padding: 18px;
  margin-bottom: 14px;
}

.prereqs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-top: 12px;
}

.prereq-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--r-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  font-size: 12px;
  transition: var(--t-fast);
}

.prereq-item.pass {
  border-left: 3px solid var(--green);
}

.prereq-item.fail {
  border-left: 3px solid var(--red);
}

.prereq-item.warn {
  border-left: 3px solid var(--amber);
}

.prereq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  font-weight: 900;
  font-size: 11px;
  border-radius: 50%;
}

.prereq-item.pass .prereq-icon {
  background: var(--green-bg);
  color: var(--green);
}

.prereq-item.fail .prereq-icon {
  background: var(--red-bg);
  color: var(--red);
}

.prereq-item.warn .prereq-icon {
  background: var(--amber-bg);
  color: var(--amber);
}

.prereq-content strong {
  display: block;
  color: var(--text-primary);
  font-size: 12px;
  margin-bottom: 2px;
}

.prereq-content p {
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1.5;
}

.prereqs-summary {
  display: flex;
  gap: 12px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
}

.prereqs-stat {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--text-muted);
}

.prereqs-stat strong {
  font-size: 14px;
  color: var(--text-primary);
}

/* ── PDF Export / Print Cover ─────────────────────────────────── */
.pdf-cover {
  display: none;
}

@media print {
  .pdf-cover {
    display: block !important;
    text-align: center;
    padding: 80px 40px 40px;
    page-break-after: always;
  }
  .pdf-cover .pdf-cover-title {
    font-size: 36px;
    font-weight: 900;
    color: #0078d4 !important;
    margin-bottom: 12px;
  }
  .pdf-cover .pdf-cover-subtitle {
    font-size: 16px;
    color: #333 !important;
    margin-bottom: 40px;
  }
  .pdf-cover .pdf-cover-customer {
    font-size: 22px;
    font-weight: 700;
    color: #000 !important;
    margin-bottom: 8px;
  }
  .pdf-cover .pdf-cover-date {
    font-size: 13px;
    color: #666 !important;
    margin-bottom: 40px;
  }
  .pdf-cover .pdf-cover-topology {
    max-width: 600px;
    margin: 0 auto 40px;
  }
  .pdf-cover .pdf-cover-topology svg {
    max-width: 100%;
    height: auto;
  }
  .pdf-toc {
    display: block !important;
    page-break-after: always;
  }
  .pdf-toc h2 {
    font-size: 20px;
    color: #000 !important;
    margin-bottom: 20px;
  }
  .pdf-toc ol {
    list-style: decimal;
    padding-left: 20px;
  }
  .pdf-toc li {
    color: #333 !important;
    font-size: 13px;
    margin-bottom: 8px;
  }
  .pdf-footer {
    display: block !important;
    text-align: center;
    font-size: 10px;
    color: #999 !important;
    padding: 10px 0;
  }
  .pdf-page-break {
    page-break-before: always;
  }
}

/* ── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 1000px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    height: auto;
    display: block;
    border-right: 0;
    border-bottom: 1px solid var(--border-subtle);
    padding: 16px;
  }
  .progress-ring-container, .help-card { display: none; }
  #steps {
    display: flex;
    overflow-x: auto;
    gap: 6px;
    padding-bottom: 6px;
  }
  .step-button {
    min-width: 150px;
    flex-shrink: 0;
  }
  .review-grid { grid-template-columns: 1fr; }
  .choice-grid { grid-template-columns: repeat(2, 1fr); }
  main { padding: 25px 20px; }
  .topology-card { min-height: 420px; }
}

@media (max-width: 650px) {
  .topbar { padding: 0 12px; }
  .region-pill, .button.ghost { display: none; }
  .brand small { display: none; }
  .choice-grid, .choice-grid.two,
  .form-grid, .form-grid.three { grid-template-columns: 1fr; }
  .page-heading, .review-heading { flex-direction: column; }
  .top-actions .button { padding: 9px 12px; font-size: 12px; }
  .wizard-footer {
    position: sticky;
    bottom: 0;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    padding: 14px 0;
    z-index: 10;
    border-top: 1px solid var(--border-default);
  }
  .footer-status { display: none; }
  .section-card { padding: 16px; }
  .dependency-list { grid-template-columns: 1fr; }
  .review-actions { flex-direction: column; }
  .review-actions .button { width: 100%; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  
  /* Touch improvements */
  .choice-card { min-height: 88px; }
  .button { min-height: 44px; }
  .step-button { min-height: 44px; }
  
  /* Better text scaling */
  h1 { font-size: 24px; }
  h2 { font-size: 16px; }
  
  /* Topology adjustments */
  .topology-card { min-height: 320px; }
  .topology-map { height: 280px; }
  
  /* Modal improvements */
  dialog { width: calc(100% - 16px); margin: 8px; }
  #modal-content { padding: 16px; }
  
  /* New features responsive */
  .view-mode-toggle { font-size: 10px; }
  .view-mode-btn { padding: 5px 8px; font-size: 10px; }
  .comparison-grid { grid-template-columns: 1fr; }
  .comparison-table { font-size: 10px; }
  .comparison-table th, .comparison-table td { padding: 8px; }
  .naming-grid { grid-template-columns: 1fr; }
  .subnet-calc-grid { grid-template-columns: 1fr; }
  .subnet-list-item { grid-template-columns: 1fr; gap: 4px; }
  .prereqs-stat { font-size: 10px; }
  .cost-per-user-card .cpu-value { font-size: 22px; }
  .review-header-actions { flex-direction: column; align-items: flex-end; }
}

/* ── WAF Pillars ───────────────────────────────────────────────── */
.waf-pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
  margin-top: 16px;
}
.waf-pillar {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 14px;
}
.waf-pillar-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.waf-pillar-icon {
  font-size: 18px;
}
.waf-pillar-header strong {
  flex: 1;
  font-size: 13px;
}
.waf-pillar-count {
  background: var(--bg-card);
  border-radius: 10px;
  padding: 2px 8px;
  font-size: 11px;
  color: var(--text-secondary);
}
.waf-pillar-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.waf-pillar-list li {
  font-size: 12px;
  color: var(--text-secondary);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}
.waf-pillar-list li:before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: bold;
}