/**
 * Base CSS - Site Styles & Reusable Components
 *
 * Part 1: MkDocs Material theme overrides (global)
 * Part 2: Reusable components (wrap content in <div class="ui">)
 */

/* ============================================
   MkDocs Material Theme Overrides
   ============================================ */

/* Make content area wider */
.md-grid {
  max-width: 1600px;
}

/* Header color */
.md-header {
  background: linear-gradient(135deg, #6c7b7f 0%, #8e9aa4 100%) !important;
  background-color: #6c7b7f !important;
}

/* Tabs bar color */
.md-tabs {
  background: linear-gradient(135deg, #6c7b7f 0%, #8e9aa4 100%) !important;
  background-color: #6c7b7f !important;
  overflow-x: hidden;
}

/* Dark mode header/tabs - match page background */
[data-md-color-scheme="slate"] .md-header {
  background: #2e303e !important;
}

[data-md-color-scheme="slate"] .md-tabs {
  background: #2e303e !important;
}

.md-tabs__link {
  color: rgba(255, 255, 255, 0.9) !important;
}

.md-tabs__link--active {
  color: #ffffff !important;
}

/* Push "Contact Us" tab to the right */
.md-tabs__list {
  display: flex;
  width: 100%;
}

.md-tabs__item:last-child {
  margin-left: auto;
  margin-right: 2rem;
}

.md-tabs__item:last-child .md-tabs__link {
  background: linear-gradient(135deg, #455A64 0%, #37474F 100%);
  border-radius: 4px;
  padding: 0.4rem 1rem;
  font-weight: 600;
}

.md-tabs__item:last-child .md-tabs__link:hover {
  background: linear-gradient(135deg, #546E7A 0%, #455A64 100%);
}

/* Two-column layout helper */
.two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 1.5rem 0;
}

.two-columns .column {
  min-width: 0;
}

@media screen and (max-width: 76.1875em) {
  .two-columns {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

/* Table of Contents - Card style */
.md-sidebar--secondary .md-nav--secondary {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 10px;
  padding: 0.5rem;
  box-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.08), 0 1px 2px -1px rgba(0, 0, 0, 0.06);
}

.md-nav--secondary > .md-nav__title {
  padding-bottom: 0.4rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  margin-bottom: 0.25rem;
}

[data-md-color-scheme="slate"] .md-sidebar--secondary .md-nav--secondary {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.06);
  box-shadow: none;
}

[data-md-color-scheme="slate"] .md-nav--secondary > .md-nav__title {
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

/* ============================================
   Reusable Components (requires .ui wrapper)
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=Inter:wght@400;500;600;700&display=swap');

/* ============================================
   CSS Variables
   ============================================ */
.ui {
  --ui-font-display: 'Inter', sans-serif;
  --ui-font-mono: 'JetBrains Mono', monospace;
  --ui-font-body: 'Inter', sans-serif;

  /* Light mode colors */
  --ui-bg-panel: #ffffff;
  --ui-bg-card: #f8fafc;
  --ui-border: rgba(8, 145, 178, 0.2);
  --ui-border-glow: rgba(8, 145, 178, 0.5);

  /* Accent colors - WCAG AA compliant on white */
  --ui-cyan: #0369a1;
  --ui-cyan-dim: rgba(3, 105, 161, 0.08);
  --ui-green: #047857;
  --ui-green-dim: rgba(4, 120, 87, 0.08);
  --ui-amber: #92400e;
  --ui-amber-dim: rgba(146, 64, 14, 0.06);
  --ui-red: #b91c1c;
  --ui-red-dim: rgba(185, 28, 28, 0.08);
  --ui-purple: #6d28d9;
  --ui-purple-dim: rgba(109, 40, 217, 0.08);

  /* Text colors - WCAG AA compliant */
  --ui-text: #1e293b;
  --ui-text-muted: #475569;
  --ui-text-dim: #64748b;

  /* Effects */
  --ui-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --ui-glow: 0 0 20px rgba(8, 145, 178, 0.4);

  /* Base styles */
  font-family: var(--ui-font-body);
  color: var(--ui-text);
}

/* Dark mode - subtle, blends with background */
[data-md-color-scheme="slate"] .ui {
  --ui-bg-panel: transparent;
  --ui-bg-card: rgba(255, 255, 255, 0.02);
  --ui-border: rgba(255, 255, 255, 0.08);
  --ui-border-glow: rgba(0, 240, 255, 0.4);

  --ui-cyan: #00d4ff;
  --ui-cyan-dim: rgba(0, 212, 255, 0.06);
  --ui-green: #00e676;
  --ui-green-dim: rgba(0, 230, 118, 0.06);
  --ui-amber: #ffab00;
  --ui-amber-dim: rgba(255, 171, 0, 0.06);
  --ui-red: #ff5252;
  --ui-red-dim: rgba(255, 82, 82, 0.06);
  --ui-purple: #b388ff;
  --ui-purple-dim: rgba(179, 136, 255, 0.06);

  --ui-text: #e0e0e0;
  --ui-text-muted: #9e9e9e;
  --ui-text-dim: #616161;

  --ui-shadow: none;
  --ui-glow: 0 0 20px rgba(0, 212, 255, 0.3);
}

/* ============================================
   Grid Layouts
   ============================================ */
.ui .grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
  margin: 0.5rem 0;
}

.ui .grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin: 0.5rem 0;
}

@media (max-width: 700px) {
  .ui .grid-2,
  .ui .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Cards
   ============================================ */
.ui .card {
  background: var(--ui-bg-panel);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  padding: 0.6rem 0.85rem;
  position: relative;
}

/* Top accent bar */
.ui .card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--card-color, var(--ui-cyan)), transparent);
  opacity: 0.7;
}

/* Card color variants */
.ui .card.cyan { --card-color: var(--ui-cyan); }
.ui .card.green { --card-color: var(--ui-green); }
.ui .card.amber { --card-color: var(--ui-amber); }
.ui .card.red { --card-color: var(--ui-red); }
.ui .card.purple { --card-color: var(--ui-purple); }

/* Card title */
.ui .card-title {
  font-family: var(--ui-font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--card-color, var(--ui-cyan));
  margin: 0 0 0.25rem 0;
}

/* Card list */
.ui .card-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.ui .card-list li {
  font-size: 0.85rem;
  color: var(--ui-text-muted);
  padding: 0.1rem 0;
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.3;
}

.ui .card-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--card-color, var(--ui-cyan));
  border-radius: 50%;
  opacity: 0.6;
}

/* ============================================
   Tables
   ============================================ */
.ui .table-wrap {
  background: var(--ui-bg-panel);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  overflow: hidden;
  margin: 0.75rem 0;
}

.ui .data-table {
  width: 100%;
  border-collapse: collapse;
}

.ui .data-table th,
.ui .data-table td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--ui-border);
}

.ui .data-table th {
  background: var(--ui-bg-card);
  font-family: var(--ui-font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ui-cyan);
}

.ui .data-table tr:last-child td {
  border-bottom: none;
}

.ui .data-table td {
  font-size: 0.85rem;
  color: var(--ui-text-muted);
}

.ui .data-table td:first-child {
  font-family: var(--ui-font-display);
  font-weight: 600;
  color: var(--ui-text);
}

.ui .data-table tr:hover td {
  background: var(--ui-cyan-dim);
}

.ui .data-table tr.total-row td {
  background: var(--ui-cyan-dim);
  font-weight: 600;
}

.ui .data-table tr.row-success td {
  background: var(--ui-green-dim);
}

.ui .data-table tr.row-danger td {
  background: var(--ui-red-dim);
}

/* ============================================
   Alerts
   ============================================ */
.ui .alert {
  padding: 0.75rem 1rem;
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  margin: 0.75rem 0;
}

.ui .alert-title {
  font-family: var(--ui-font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 0.5rem 0;
}

.ui .alert-text {
  font-size: 0.85rem;
  line-height: 1.4;
  color: var(--ui-text-muted);
  margin: 0;
}

/* Alert variants */
.ui .alert.info {
  background: var(--ui-cyan-dim);
  border-left: 3px solid var(--ui-cyan);
}
.ui .alert.info .alert-title { color: var(--ui-cyan); }

.ui .alert.success {
  background: var(--ui-green-dim);
  border-left: 3px solid var(--ui-green);
}
.ui .alert.success .alert-title { color: var(--ui-green); }

.ui .alert.warning {
  background: var(--ui-amber-dim);
  border-left: 3px solid var(--ui-amber);
}
.ui .alert.warning .alert-title { color: var(--ui-amber); }

.ui .alert.danger {
  background: var(--ui-red-dim);
  border-left: 3px solid var(--ui-red);
}
.ui .alert.danger .alert-title { color: var(--ui-red); }

/* ============================================
   Buttons
   ============================================ */
.ui .btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--ui-cyan);
  color: #000;
  text-decoration: none;
  border-radius: 4px;
  font-family: var(--ui-font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
}

.ui .btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--ui-shadow);
}

.ui .btn.green { background: var(--ui-green); }
.ui .btn.amber { background: var(--ui-amber); }
.ui .btn.purple { background: var(--ui-purple); color: #fff; }

/* ============================================
   Section Headers
   ============================================ */
.ui .section-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 1rem 0 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--ui-border);
}

.ui .section-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ui-cyan-dim);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  font-size: 1rem;
}

.ui .section-title {
  font-family: var(--ui-font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ui-cyan);
  margin: 0;
}

.ui .section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--ui-border), transparent);
}

/* ============================================
   Help/Info Box
   ============================================ */
.ui .help-box {
  margin: 0.6rem 0;
  padding: 0.7rem 1rem;
  background: var(--ui-cyan-dim);
  border: 1px solid var(--ui-border);
  border-left: 3px solid var(--ui-cyan);
  border-radius: 4px;
}

.ui .help-box-title {
  font-family: var(--ui-font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ui-cyan);
  margin: 0 0 0.5rem 0;
}

.ui .help-box-text {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--ui-text-muted);
  margin: 0;
}

/* ============================================
   Text Utilities
   ============================================ */
.ui p {
  font-size: 0.9rem;
  line-height: 1.4;
  color: var(--ui-text-muted);
  margin: 0 0 0.5rem 0;
}

.ui strong {
  color: var(--ui-text);
  font-weight: 600;
}

.ui .text-cyan { color: var(--ui-cyan); }
.ui .text-green { color: var(--ui-green); }
.ui .text-amber { color: var(--ui-amber); }
.ui .text-red { color: var(--ui-red); }
.ui .text-purple { color: var(--ui-purple); }
.ui .text-muted { color: var(--ui-text-muted); }

/* ============================================
   Spacing Utilities
   ============================================ */
.ui .mt-1 { margin-top: 0.5rem; }
.ui .mt-2 { margin-top: 1rem; }
.ui .mt-3 { margin-top: 1.5rem; }
.ui .mb-1 { margin-bottom: 0.5rem; }
.ui .mb-2 { margin-bottom: 1rem; }
.ui .mb-3 { margin-bottom: 1.5rem; }

/* ============================================
   Link Cards (compact clickable cards)
   ============================================ */
.ui .link-card {
  display: block;
  position: relative;
  background: var(--ui-bg-panel);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  padding: 0.75rem 1rem;
  text-decoration: none;
  color: inherit;
  transition: all 0.25s ease;
}

.ui .link-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--ui-border);
  border-radius: 4px 0 0 4px;
  transition: background 0.25s ease;
}

.ui .link-card:hover {
  border-color: var(--ui-border-glow);
  transform: translateX(4px);
  box-shadow: var(--ui-shadow);
}

.ui .link-card:hover::before {
  background: var(--ui-cyan);
}

.ui .link-card-title {
  font-family: var(--ui-font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 0.35rem 0;
  display: flex;
  align-items: center;
}

.ui .link-card-icon {
  font-size: 1rem;
  margin-right: 0.5rem;
}

.ui .link-card-desc {
  font-size: 0.75rem;
  line-height: 1.4;
  color: var(--ui-text-muted);
  margin: 0;
}

/* ============================================
   Tool Cards (large feature cards with hover)
   ============================================ */
.ui .tool-card {
  display: block;
  position: relative;
  background: var(--ui-bg-panel);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  padding: 1.75rem;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.ui .tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--card-color, var(--ui-cyan)), transparent);
  opacity: 0.7;
}

.ui .tool-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--ui-cyan-dim), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.ui .tool-card:hover {
  border-color: var(--ui-border-glow);
  transform: translateY(-4px);
  box-shadow: var(--ui-shadow), var(--ui-glow);
}

.ui .tool-card:hover::after {
  opacity: 1;
}

.ui .tool-card.green { --card-color: var(--ui-green); }
.ui .tool-card.cyan { --card-color: var(--ui-cyan); }

.ui .tool-card-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.ui .tool-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ui-bg-card);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.ui .tool-card-label {
  font-family: var(--ui-font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--card-color, var(--ui-cyan));
  margin-bottom: 0.25rem;
}

.ui .tool-card-name {
  font-family: var(--ui-font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin: 0;
}

.ui .tool-card-desc {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--ui-text-muted);
  margin: 0;
  position: relative;
  z-index: 1;
}

.ui .tool-card-arrow {
  position: absolute;
  bottom: 1.25rem;
  right: 1.25rem;
  font-family: var(--ui-font-mono);
  font-size: 0.75rem;
  color: var(--ui-text-dim);
  opacity: 0;
  transform: translateX(-8px);
  transition: all 0.3s ease;
}

.ui .tool-card:hover .tool-card-arrow {
  opacity: 1;
  transform: translateX(0);
  color: var(--card-color, var(--ui-cyan));
}

.ui .tool-status {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--ui-font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.5rem;
  background: var(--ui-green);
  color: #000;
  border-radius: 2px;
  font-weight: 600;
}

/* ============================================
   Steps Component
   ============================================ */
.ui .steps-box {
  background: var(--ui-bg-panel);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  padding: 1.5rem;
  margin-top: 2rem;
}

.ui .steps-title {
  font-family: var(--ui-font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ui-cyan);
  margin: 0 0 1.25rem 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.ui .steps-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--ui-border);
}

.ui .steps-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ui .step {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.ui .step-number {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ui-cyan-dim);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  font-family: var(--ui-font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ui-cyan);
  flex-shrink: 0;
}

.ui .step-content {
  flex: 1;
  padding-top: 0.2rem;
}

.ui .step-label {
  font-family: var(--ui-font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.ui .step-desc {
  font-size: 0.85rem;
  color: var(--ui-text-muted);
  margin: 0;
}

.ui .step-desc a {
  color: var(--ui-cyan);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: text-decoration-thickness 0.2s ease;
}

.ui .step-desc a:hover {
  text-decoration-thickness: 2px;
}

/* ============================================
   Hero Section
   ============================================ */
.ui .hero {
  text-align: center;
  padding: 0 1rem 0.25rem;
  position: relative;
}

.ui .hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--ui-cyan), transparent);
}

.ui .hero-title {
  font-family: var(--ui-font-display);
  font-size: clamp(1.8rem, 5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin: 0 0 0.75rem 0;
  background: linear-gradient(135deg, var(--ui-cyan), var(--ui-text));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-md-color-scheme="slate"] .ui .hero-title {
  background: linear-gradient(135deg, var(--ui-cyan), #9e9e9e);
  -webkit-background-clip: text;
  background-clip: text;
  text-shadow: none;
}

.ui .hero-subtitle {
  font-family: var(--ui-font-mono);
  font-size: 0.85rem;
  color: var(--ui-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ============================================
   Mistakes List (with X markers)
   ============================================ */
.ui .mistakes-box {
  background: var(--ui-bg-panel);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  padding: 0.875rem 1rem;
  margin: 0.75rem 0;
}

.ui .mistakes-title {
  font-family: var(--ui-font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ui-red);
  margin: 0 0 0.25rem 0;
}

.ui .mistakes-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.ui .mistakes-list li {
  font-size: 0.85rem;
  color: var(--ui-text-muted);
  padding: 0.1rem 0;
  padding-left: 1.5rem;
  position: relative;
  line-height: 1.3;
}

.ui .mistakes-list li::before {
  content: '✕';
  position: absolute;
  left: 0;
  color: var(--ui-red);
  font-weight: 600;
}

.ui .mistakes-list li strong {
  color: var(--ui-text);
}

/* ============================================
   Checklist (with checkbox markers)
   ============================================ */
.ui .checklist-box {
  background: var(--ui-bg-panel);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  padding: 0.875rem 1rem;
  margin: 0.75rem 0;
}

.ui .checklist-title {
  font-family: var(--ui-font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ui-green);
  margin: 0 0 0.25rem 0;
}

.ui .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.ui .checklist li {
  font-size: 0.85rem;
  color: var(--ui-text-muted);
  padding: 0.15rem 0;
  padding-left: 2rem;
  position: relative;
  border-bottom: 1px solid var(--ui-border);
  line-height: 1.3;
}

.ui .checklist li:last-child {
  border-bottom: none;
}

.ui .checklist li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  border: 1px solid var(--ui-border);
  border-radius: 3px;
  background: var(--ui-bg-card);
}

/* ============================================
   Configurator (interactive setup selector)
   ============================================ */
.ui .configurator {
  background: var(--ui-bg-panel);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  padding: 1rem;
  margin: 0.75rem 0;
}

.ui .config-options {
  display: flex;
  gap: 1rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.ui .option-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.ui .option-group label {
  font-family: var(--ui-font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ui-text-muted);
}

.ui .option-buttons {
  display: flex;
  gap: 0.5rem;
}

.ui .config-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--ui-border);
  background: var(--ui-bg-card);
  color: var(--ui-text-muted);
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--ui-font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: all 0.2s ease;
}

.ui .config-btn:hover {
  border-color: var(--ui-cyan);
  color: var(--ui-cyan);
}

.ui .config-btn.active {
  background: var(--ui-cyan);
  border-color: var(--ui-cyan);
  color: #000;
}

.ui .diagram-container {
  background: var(--ui-bg-card);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  padding: 0.5rem;
  text-align: center;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ui .diagram-container img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

/* ============================================
   Feature Cards (compact 3-column)
   ============================================ */
.ui .feature-card {
  background: var(--ui-bg-panel);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  padding: 0.75rem 1rem;
  position: relative;
  transition: all 0.25s ease;
}

.ui .feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--card-color, var(--ui-cyan)), transparent);
  opacity: 0.7;
}

.ui .feature-card:hover {
  border-color: var(--ui-border-glow);
  transform: translateY(-2px);
  box-shadow: var(--ui-shadow);
}

.ui .feature-card.green { --card-color: var(--ui-green); }
.ui .feature-card.cyan { --card-color: var(--ui-cyan); }
.ui .feature-card.purple { --card-color: var(--ui-purple); }

.ui .feature-icon {
  font-size: 1rem;
  margin-right: 0.5rem;
}

.ui .feature-title {
  font-family: var(--ui-font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 0.35rem 0;
  display: flex;
  align-items: center;
}

.ui .feature-desc {
  font-size: 0.75rem;
  line-height: 1.4;
  color: var(--ui-text-muted);
  margin: 0;
}

/* ============================================
   Diagram Flow
   ============================================ */
.ui .diagram-box {
  background: var(--ui-bg-panel);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.ui .diagram-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.ui .diagram-node {
  background: var(--ui-bg-card);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  padding: 1rem 1.25rem;
  text-align: center;
  min-width: 120px;
}

.ui .diagram-node.amber { border-color: var(--ui-amber); }
.ui .diagram-node.cyan { border-color: var(--ui-cyan); }

.ui .node-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.ui .node-label {
  font-family: var(--ui-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ui-text-muted);
}

.ui .diagram-arrow {
  font-family: var(--ui-font-mono);
  font-size: 1.25rem;
  color: var(--ui-cyan);
  padding: 0 0.25rem;
}

.ui .diagram-desc {
  text-align: center;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--ui-border);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--ui-text-muted);
}

/* ============================================
   Phase Cards (numbered steps in grid)
   ============================================ */
.ui .phase-card {
  background: var(--ui-bg-panel);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  padding: 0.9rem;
  position: relative;
  overflow: hidden;
}

.ui .phase-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
}

.ui .phase-number {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--phase-color-dim, var(--ui-cyan-dim));
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  font-family: var(--ui-font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--phase-color, var(--ui-cyan));
  flex-shrink: 0;
}

.ui .phase-title {
  font-family: var(--ui-font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0;
}

.ui .phase-card.phase-1 { --phase-color: var(--ui-amber); --phase-color-dim: var(--ui-amber-dim); }
.ui .phase-card.phase-2 { --phase-color: var(--ui-cyan); --phase-color-dim: var(--ui-cyan-dim); }
.ui .phase-card.phase-3 { --phase-color: var(--ui-green); --phase-color-dim: var(--ui-green-dim); }
.ui .phase-card.phase-4 { --phase-color: var(--ui-purple); --phase-color-dim: var(--ui-purple-dim); }

.ui .phase-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.ui .phase-list li {
  font-size: 0.85rem;
  color: var(--ui-text-muted);
  padding: 0.15rem 0;
  padding-left: 1.1rem;
  position: relative;
}

.ui .phase-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--phase-color, var(--ui-cyan));
  border-radius: 50%;
  opacity: 0.6;
}

.ui .phase-list a {
  color: var(--ui-cyan);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.ui .phase-list a:hover {
  text-decoration-thickness: 2px;
}

/* ============================================
   FAQ Accordion
   ============================================ */
.ui .faq {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.ui .faq-item {
  background: var(--ui-bg-panel);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  overflow: hidden;
}

.ui .faq-question {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.6rem 1rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

.ui .faq-question:hover {
  background: var(--ui-cyan-dim);
}

.ui .faq-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ui-cyan-dim);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  font-family: var(--ui-font-mono);
  font-size: 0.75rem;
  color: var(--ui-cyan);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.ui .faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.ui .faq-q-text {
  font-family: var(--ui-font-display);
  font-size: 0.85rem;
  font-weight: 500;
  flex: 1;
}

.ui .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.ui .faq-item.open .faq-answer {
  max-height: 200px;
}

.ui .faq-a-text {
  padding: 0 1.25rem 1rem 3.5rem;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--ui-text-muted);
  margin: 0;
}

/* ============================================
   CTA Box
   ============================================ */
.ui .cta-box {
  background: var(--ui-bg-panel);
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  padding: 1.2rem;
  text-align: center;
  margin-top: 1rem;
  position: relative;
  overflow: hidden;
}

.ui .cta-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--ui-green), var(--ui-cyan), var(--ui-purple));
}

.ui .cta-title {
  font-family: var(--ui-font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 0.75rem 0;
}

.ui .cta-desc {
  font-size: 0.9rem;
  color: var(--ui-text-muted);
  margin: 0 0 1.5rem 0;
}

.ui .cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: #1e40af;
  color: #ffffff;
  font-family: var(--ui-font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.875rem 1.75rem;
  border-radius: 4px;
  transition: all 0.25s ease;
}

.ui .cta-button:hover {
  background: #1e3a8a;
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--ui-glow);
}

[data-md-color-scheme="slate"] .ui .cta-button:hover {
  background: #fff;
  color: #000;
}

/* ============================================
   Warning Box (amber variant of help-box)
   ============================================ */
.ui .warning-box {
  margin: 0.6rem 0;
  padding: 0.7rem 1rem;
  background: var(--ui-amber-dim);
  border: 1px solid var(--ui-border);
  border-left: 3px solid var(--ui-amber);
  border-radius: 4px;
}

.ui .warning-box-title {
  font-family: var(--ui-font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ui-amber);
  margin: 0 0 0.5rem 0;
}

.ui .warning-box-text {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--ui-text-muted);
  margin: 0;
}

/* ============================================
   Large Hero (for home page)
   ============================================ */
.ui .hero-large {
  text-align: center;
  padding: 0.3rem 1rem 0.8rem;
  margin-top: -0.8rem;
  position: relative;
}

.ui .hero-large::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--ui-cyan), transparent);
}

.ui .hero-large-title {
  font-family: var(--ui-font-display);
  font-size: clamp(2rem, 6vw, 2.8rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 0.5rem 0;
  background: linear-gradient(135deg, var(--ui-cyan), var(--ui-text));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-md-color-scheme="slate"] .ui .hero-large-title {
  background: linear-gradient(135deg, var(--ui-cyan), #9e9e9e);
  -webkit-background-clip: text;
  background-clip: text;
  text-shadow: none;
}

.ui .hero-desc {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ui-text-muted);
  max-width: 700px;
  margin: 0 auto;
}