/* ==========================================================================
   NEXORA DATA SYSTEMS — ENTERPRISE STYLESHEET (V3 REFINED)
   Theme: Default Crisp Light Mode with Seamless Dark Mode Toggle
   Fixes: Navbar Spacing, Live Partner Portal, Modal, Zero AI Clichés
   ========================================================================== */

/* --------------------------------------------------------------------------
   Design Tokens & CSS Variables
   -------------------------------------------------------------------------- */
:root {
  /* Light Theme (Default) */
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --bg-subtle: #f1f5f9;
  --bg-input: #ffffff;

  --border-subtle: #e2e8f0;
  --border-medium: #cbd5e1;
  --border-focus: #2563eb;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;
  --code-text: #0f172a;
  --code-bg: #f8fafc;

  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-subtle: #eff6ff;
  --color-accent: #0284c7;

  --badge-emerald-bg: #ecfdf5;
  --badge-emerald-text: #047857;
  --badge-emerald-border: #a7f3d0;

  --badge-amber-bg: #fffbeb;
  --badge-amber-text: #b45309;
  --badge-amber-border: #fde68a;

  --badge-rose-bg: #fef2f2;
  --badge-rose-text: #b91c1c;
  --badge-rose-border: #fecaca;

  --badge-blue-bg: #eff6ff;
  --badge-blue-text: #1d4ed8;
  --badge-blue-border: #bfdbfe;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-card: 0 4px 6px -1px rgba(15, 23, 42, 0.04), 0 2px 4px -2px rgba(15, 23, 42, 0.03);
  --shadow-elevated: 0 12px 24px -4px rgba(15, 23, 42, 0.08), 0 4px 8px -2px rgba(15, 23, 42, 0.04);
  --shadow-modal: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --nav-height: 72px;
}

/* Dark Theme Overrides */
[data-theme="dark"] {
  --bg-page: #090d16;
  --bg-surface: #0f1523;
  --bg-surface-elevated: #151d2e;
  --bg-card: #131a29;
  --bg-card-hover: #182236;
  --bg-subtle: #162032;
  --bg-input: #101726;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.16);
  --border-focus: #3b82f6;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;
  --code-text: #e2e8f0;
  --code-bg: #0b101c;

  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-primary-subtle: rgba(59, 130, 246, 0.15);
  --color-accent: #38bdf8;

  --badge-emerald-bg: rgba(16, 185, 129, 0.12);
  --badge-emerald-text: #34d399;
  --badge-emerald-border: rgba(16, 185, 129, 0.25);

  --badge-amber-bg: rgba(245, 158, 11, 0.12);
  --badge-amber-text: #fbbf24;
  --badge-amber-border: rgba(245, 158, 11, 0.25);

  --badge-rose-bg: rgba(239, 68, 68, 0.12);
  --badge-rose-text: #f87171;
  --badge-rose-border: rgba(239, 68, 68, 0.25);

  --badge-blue-bg: rgba(59, 130, 246, 0.12);
  --badge-blue-text: #60a5fa;
  --badge-blue-border: rgba(59, 130, 246, 0.25);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-card: 0 4px 12px -2px rgba(0, 0, 0, 0.5);
  --shadow-elevated: 0 12px 28px -4px rgba(0, 0, 0, 0.6);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-primary);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  transition: background-color 0.25s ease, color 0.25s ease;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --------------------------------------------------------------------------
   Navigation Bar (Collision Fixed)
   -------------------------------------------------------------------------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.2s ease;
}

.nav-container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  margin-right: 28px;
}

.brand-logo-img {
  width: 32px;
  height: 32px;
}

.brand-title {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text-primary);
}

.brand-domain {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-shrink: 1;
}

.nav-link {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.15s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.theme-toggle-btn:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.theme-icon-light,
.theme-icon-dark {
  display: none;
}

:root:not([data-theme="dark"]) .theme-icon-dark {
  display: block;
}

[data-theme="dark"] .theme-icon-light {
  display: block;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
  border: 1px solid var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.btn-outline {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}

.btn-outline:hover {
  background: var(--bg-subtle);
  border-color: var(--text-secondary);
}

.btn-partner {
  background: var(--badge-blue-bg);
  color: var(--color-primary);
  border: 1px solid var(--badge-blue-border);
}

.btn-partner:hover {
  background: var(--color-primary);
  color: #ffffff;
}

.btn-lg {
  padding: 12px 24px;
  font-size: 14.5px;
}

.btn-sm {
  padding: 5px 10px;
  font-size: 11.5px;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  padding: 64px 0 84px;
  border-bottom: 1px solid var(--border-subtle);
  background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-page) 100%);
}

.hero-header {
  text-align: center;
  max-width: 840px;
  margin: 0 auto 44px;
}

.hero-title {
  font-size: 46px;
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: -1.2px;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 17.5px;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   Interactive Live Partner Portal Shell (Replacing Static Mockup)
   -------------------------------------------------------------------------- */
.hero-mockup-wrapper {
  margin-top: 44px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-elevated);
  overflow: hidden;
}

.mockup-toolbar {
  height: 44px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  padding: 0 16px;
  justify-content: space-between;
}

.mockup-controls {
  display: flex;
  gap: 7px;
}

.mockup-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.mockup-dot.red { background: #ff5f56; }
.mockup-dot.yellow { background: #ffbd2e; }
.mockup-dot.green { background: #27c93f; }

.mockup-address {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-muted);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 4px 18px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 8px;
}

.mockup-lock-icon {
  width: 12px;
  height: 12px;
  color: var(--badge-emerald-text);
}

.portal-app-container {
  background: var(--bg-surface);
  padding: 24px;
}

/* Partner Portal Header */
.portal-store-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 16px;
}

.store-identity {
  display: flex;
  align-items: center;
  gap: 14px;
}

.store-badge-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--badge-blue-bg);
  border: 1px solid var(--badge-blue-border);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 15px;
}

.store-meta h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
}

.store-sub {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  gap: 8px;
  align-items: center;
}

.portal-auth-pill {
  display: flex;
  align-items: center;
  gap: 12px;
}

.auth-user-info {
  text-align: right;
}

.auth-user-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.auth-user-role {
  font-size: 11px;
  color: var(--text-muted);
}

/* Portal KPI Grid */
.portal-kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 16px;
}

.kpi-title {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 6px;
}

.kpi-num {
  font-size: 22px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.kpi-sub {
  font-size: 11px;
  margin-top: 4px;
}

.kpi-sub.text-green { color: var(--badge-emerald-text); }
.kpi-sub.text-red { color: var(--badge-rose-text); }

/* Portal Watchlist Table */
.portal-table-shell {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  overflow-x: auto;
}

.portal-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.portal-table th {
  background: var(--bg-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.portal-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  white-space: nowrap;
}

.portal-table tr:hover td {
  background: var(--bg-subtle);
}

/* --------------------------------------------------------------------------
   Partner Login Modal
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-backdrop.open {
  display: flex;
}

.login-modal-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-modal);
  overflow: hidden;
  animation: modal-enter 0.2s ease;
}

@keyframes modal-enter {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 24px 24px 16px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.modal-title-group h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.modal-title-group p {
  font-size: 13px;
  color: var(--text-muted);
}

.modal-close-btn {
  color: var(--text-muted);
  font-size: 20px;
  line-height: 1;
}

.modal-close-btn:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-field input {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-medium);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 13.5px;
  outline: none;
}

.form-field input:focus {
  border-color: var(--border-focus);
}

.demo-account-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px;
  font-size: 12px;
  color: var(--text-secondary);
}

.demo-account-box strong {
  color: var(--text-primary);
}

/* Notification Toast */
.portal-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1100;
  background: var(--text-primary);
  color: var(--text-inverse);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--shadow-modal);
  display: none;
  align-items: center;
  gap: 10px;
}

.portal-toast.active {
  display: flex;
}

/* --------------------------------------------------------------------------
   Section Common
   -------------------------------------------------------------------------- */
.section {
  padding: 90px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-alt {
  background: var(--bg-surface);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 52px;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-heading {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.8px;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.section-description {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Section: Why Nexora Exists
   -------------------------------------------------------------------------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
}

.card-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.icon-amber { background: var(--badge-amber-bg); color: var(--badge-amber-text); border: 1px solid var(--badge-amber-border); }
.icon-rose { background: var(--badge-rose-bg); color: var(--badge-rose-text); border: 1px solid var(--badge-rose-border); }
.icon-blue { background: var(--badge-blue-bg); color: var(--badge-blue-text); border: 1px solid var(--badge-blue-border); }

.card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.card-body {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 24px;
}

.card-metric-footer {
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12.5px;
  color: var(--text-muted);
}

.card-metric-footer strong {
  font-family: var(--font-mono);
  color: var(--text-primary);
}

/* 4 Value Pillars */
.pillars-row {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.pillar-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 22px;
}

.pillar-number {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.pillar-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.pillar-item p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   Section: Live Hardware Intelligence Table
   -------------------------------------------------------------------------- */
.table-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  gap: 16px;
  flex-wrap: wrap;
}

.table-filter-group {
  display: flex;
  gap: 6px;
}

.filter-chip {
  font-size: 13px;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-secondary);
  transition: all 0.15s ease;
}

.filter-chip:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
}

.filter-chip.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  width: 360px;
}

.search-input-wrapper input {
  border: none;
  background: none;
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
  width: 100%;
}

.table-frame {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow-x: auto;
}

.benchmark-data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13.5px;
}

.benchmark-data-table th {
  background: var(--bg-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
}

.benchmark-data-table td {
  padding: 15px 18px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  white-space: nowrap;
}

.table-sku-title {
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
}

.table-sku-spec {
  font-size: 11.5px;
  color: var(--text-muted);
  font-weight: 400;
}

.tabular-price {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--text-primary);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-xs);
  border: 1px solid transparent;
}

.badge-brand {
  background: var(--bg-subtle);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.badge-spread-positive {
  background: var(--badge-rose-bg);
  color: var(--badge-rose-text);
  border-color: var(--badge-rose-border);
}

.badge-spread-neutral {
  background: var(--badge-emerald-bg);
  color: var(--badge-emerald-text);
  border-color: var(--badge-emerald-border);
}

.badge-stock {
  background: var(--badge-emerald-bg);
  color: var(--badge-emerald-text);
  border-color: var(--badge-emerald-border);
}

.badge-match-score {
  color: var(--color-primary);
  font-weight: 700;
}

.meta-tags-bar {
  margin-top: 14px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.meta-pill {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-muted);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: var(--radius-xs);
}

/* --------------------------------------------------------------------------
   Section: Architecture Stepper
   -------------------------------------------------------------------------- */
.stepper-flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.stepper-node {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stepper-badge {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  padding: 2px 7px;
  border-radius: var(--radius-xs);
  display: inline-block;
  margin-bottom: 12px;
}

.stepper-title {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.stepper-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
}

.stepper-footer {
  border-top: 1px solid var(--border-subtle);
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Section: Kimball DDL Code Viewer
   -------------------------------------------------------------------------- */
.code-viewer-shell {
  background: var(--code-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.code-viewer-nav {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  overflow-x: auto;
}

.code-nav-btn {
  padding: 12px 20px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-muted);
  border-right: 1px solid var(--border-subtle);
  transition: all 0.15s ease;
  white-space: nowrap;
}

.code-nav-btn:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
}

.code-nav-btn.active {
  background: var(--code-bg);
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
}

.code-pane {
  padding: 24px;
  overflow-x: auto;
}

.code-pane pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--code-text);
}

/* --------------------------------------------------------------------------
   Section: ROI Calculator
   -------------------------------------------------------------------------- */
.roi-calculator-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
}

.roi-input-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.calc-field label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.calc-slider-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.calc-slider-row input[type="range"] {
  flex: 1;
  accent-color: var(--color-primary);
  height: 6px;
  background: var(--border-subtle);
  border-radius: 4px;
}

.calc-slider-row span {
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 700;
  color: var(--color-primary);
  min-width: 120px;
  text-align: right;
}

.roi-output-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.roi-output-panel h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.roi-result-row {
  padding: 16px 0;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.roi-result-label {
  font-size: 13.5px;
  color: var(--text-secondary);
}

.roi-result-val {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.roi-result-val.highlight {
  color: var(--badge-emerald-text);
}

/* --------------------------------------------------------------------------
   Section: Engineering Team
   -------------------------------------------------------------------------- */
.team-deck {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.team-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.team-avatar-initials {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-subtle);
  border: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.team-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.team-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.team-bio {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
}

.team-scope-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  padding-top: 10px;
  display: flex;
  gap: 6px;
  align-items: center;
}

.tag-badge {
  background: var(--bg-subtle);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--text-primary);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 32px;
  margin-top: auto;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-lead {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: 12px;
  max-width: 400px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.footer-col h5 {
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  transition: color 0.15s ease;
}

.footer-col a:hover {
  color: var(--color-primary);
}

.footer-copyright {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

/* --------------------------------------------------------------------------
   Responsive Media Queries
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .nav-menu { gap: 14px; }
  .nav-link { font-size: 12.5px; }
  .portal-kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .stepper-flow { grid-template-columns: repeat(2, 1fr); }
  .pillars-row { grid-template-columns: repeat(2, 1fr); }
  .team-deck { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .nav-menu { display: none; }
  .hero-title { font-size: 34px; }
  .grid-3 { grid-template-columns: 1fr; }
  .roi-calculator-layout { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-nav { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .portal-kpi-grid { grid-template-columns: 1fr; }
  .stepper-flow { grid-template-columns: 1fr; }
  .pillars-row { grid-template-columns: 1fr; }
  .team-deck { grid-template-columns: 1fr; }
  .search-input-wrapper { width: 100%; }
}