/* ==========================================================================
   SealSuite BYOD Guide - Modern, Clean & Ultra Mobile-Responsive Stylesheet
   ========================================================================== */

:root {
  /* Dark Theme Tokens (Default) */
  --bg-page: hsl(220, 18%, 10%);
  --bg-surface: hsl(220, 18%, 13%);
  --bg-surface-elevated: hsl(220, 18%, 17%);
  --bg-surface-hover: hsl(220, 18%, 21%);
  
  --border-subtle: hsl(220, 14%, 22%);
  --border-strong: hsl(220, 14%, 32%);

  --text-primary: hsl(220, 20%, 96%);
  --text-secondary: hsl(220, 14%, 72%);
  --text-muted: hsl(220, 12%, 52%);

  --accent-primary: hsl(210, 100%, 56%);
  --accent-primary-hover: hsl(210, 100%, 64%);
  --accent-primary-subtle: hsla(210, 100%, 56%, 0.14);

  --accent-success: hsl(152, 70%, 46%);
  --accent-success-subtle: hsla(152, 70%, 46%, 0.14);

  --accent-warning: hsl(38, 92%, 52%);
  --accent-warning-subtle: hsla(38, 92%, 52%, 0.14);

  --accent-danger: hsl(0, 84%, 60%);
  --accent-danger-subtle: hsla(0, 84%, 60%, 0.14);

  --accent-info: hsl(195, 88%, 52%);
  --accent-info-subtle: hsla(195, 88%, 52%, 0.14);

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

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.35);

  --nav-height: 64px;
  --sidebar-width: 280px;
}

[data-theme="light"] {
  --bg-page: hsl(210, 20%, 98%);
  --bg-surface: hsl(0, 0%, 100%);
  --bg-surface-elevated: hsl(210, 20%, 94%);
  --bg-surface-hover: hsl(210, 20%, 90%);
  
  --border-subtle: hsl(220, 14%, 88%);
  --border-strong: hsl(220, 14%, 76%);

  --text-primary: hsl(220, 24%, 12%);
  --text-secondary: hsl(220, 14%, 38%);
  --text-muted: hsl(220, 10%, 56%);

  --accent-primary: hsl(210, 96%, 45%);
  --accent-primary-hover: hsl(210, 96%, 40%);
  --accent-primary-subtle: hsla(210, 96%, 45%, 0.10);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10);
}

/* ==========================================================================
   Base & Reset
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-page);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

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

code, pre {
  font-family: var(--font-mono);
}

code {
  font-size: 0.88em;
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--accent-primary);
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--accent-primary-hover);
}

/* ==========================================================================
   Top Navbar
   ========================================================================== */

.top-nav {
  position: sticky;
  top: 0;
  height: var(--nav-height);
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1440px;
  height: 100%;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-brand-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background-color: var(--accent-primary-subtle);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand-title {
  display: block;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.brand-subtitle {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.nav-search {
  flex: 1;
  max-width: 400px;
  position: relative;
  display: flex;
  align-items: center;
}

.nav-search svg {
  position: absolute;
  left: 0.85rem;
  color: var(--text-muted);
  pointer-events: none;
}

.nav-search input {
  width: 100%;
  padding: 0.5rem 1rem 0.5rem 2.4rem;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.88rem;
  outline: none;
  transition: all 0.2s ease;
}

.nav-search input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-subtle);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-lang {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-lang:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--border-strong);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.88rem;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
}

.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.82rem; }
.btn-lg { padding: 0.75rem 1.5rem; font-size: 0.95rem; }

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

.btn-primary:hover {
  background-color: var(--accent-primary-hover);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.btn-outline:hover { background-color: var(--bg-surface-hover); }

.btn-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.18s ease;
}

.btn-icon:hover {
  color: var(--text-primary);
  background-color: var(--bg-surface-hover);
  border-color: var(--border-strong);
}

[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

/* ==========================================================================
   Layout Container & Sidebar
   ========================================================================== */

.layout-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  flex: 1;
  width: 100%;
  position: relative;
}

.sidebar-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 150;
  backdrop-filter: blur(2px);
}

.sidebar {
  width: var(--sidebar-width);
  height: calc(100vh - var(--nav-height));
  position: sticky;
  top: var(--nav-height);
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
  overflow-y: auto;
  z-index: 10;
}

.sidebar-header {
  margin-bottom: 0.85rem;
  padding: 0 0.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.close-sidebar-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
}

.sidebar-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.15s ease;
}

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

.nav-link.active {
  color: var(--accent-primary);
  background-color: var(--accent-primary-subtle);
  font-weight: 600;
}

.link-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: transparent;
  transition: background-color 0.15s ease;
}

.nav-link.active .link-dot {
  background-color: var(--accent-primary);
}

.sidebar-footer {
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.status-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-success);
  box-shadow: 0 0 0 3px var(--accent-success-subtle);
}

.content-area {
  flex: 1;
  padding: 2.5rem 3rem;
  max-width: 1060px;
  overflow-x: hidden;
}

/* ==========================================================================
   Typography & Sections
   ========================================================================== */

.content-section {
  margin-bottom: 3.5rem;
  scroll-margin-top: 5rem;
}

.section-header {
  margin-bottom: 1.25rem;
}

.section-title {
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.section-lead {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.body-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.hero-section {
  margin-bottom: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.badge-tag {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background-color: var(--accent-primary-subtle);
  color: var(--accent-primary);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 1rem;
}

.hero-title {
  font-size: 2.3rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 820px;
  line-height: 1.65;
  margin-bottom: 2rem;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.stat-card {
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.35rem;
}

.stat-val {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.stat-sub {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.text-warning { color: var(--accent-warning) !important; }
.text-success { color: var(--accent-success) !important; }
.text-danger { color: var(--accent-danger) !important; }

/* ==========================================================================
   Architecture Box Diagram
   ========================================================================== */

.arch-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2rem;
}

.arch-box {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.box-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.box-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.arch-modules-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.arch-module {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: center;
  transition: all 0.2s ease;
  cursor: default;
}

.arch-module:hover {
  transform: translateY(-2px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-sm);
}

.mod-icon {
  font-size: 1.6rem;
  margin-bottom: 0.4rem;
}

.mod-name {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.mod-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.arch-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 0.5rem 0;
}

.flow-line {
  position: absolute;
  width: 2px;
  height: 100%;
  background-color: var(--border-strong);
  z-index: 1;
}

.flow-badge {
  position: relative;
  z-index: 2;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.35rem 1rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-primary);
  text-align: center;
}

.server-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   Privilege & Info Cards
   ========================================================================== */

.privilege-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.info-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.card-icon-header {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.card-icon-header h3 {
  font-size: 1.05rem;
  font-weight: 700;
}

.pill-badge {
  align-self: flex-start;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.pill-danger { background-color: var(--accent-danger-subtle); color: var(--accent-danger); }
.pill-warning { background-color: var(--accent-warning-subtle); color: var(--accent-warning); }
.pill-info { background-color: var(--accent-info-subtle); color: var(--accent-info); }

.check-list, .bullet-list, .ordered-list {
  padding-left: 1.2rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

/* ==========================================================================
   Table & Tier Controls
   ========================================================================== */

.tier-tab-controls {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.tier-tab-btn {
  padding: 0.5rem 0.95rem;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.tier-tab-btn:hover {
  background-color: var(--bg-surface-hover);
  color: var(--text-primary);
}

.tier-tab-btn.active {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
}

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-sm);
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.data-table th {
  background-color: var(--bg-surface-elevated);
  padding: 0.85rem 1.25rem;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-subtle);
}

.data-table td {
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: top;
  line-height: 1.55;
}

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

.table-subtext {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: normal;
  margin-top: 0.2rem;
}

.tag-tier {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.tier-min { background-color: var(--accent-info-subtle); color: var(--accent-info); }
.tier-std { background-color: var(--accent-warning-subtle); color: var(--accent-warning); }
.tier-dlp { background-color: var(--accent-danger-subtle); color: var(--accent-danger); }

/* Alerts & Grids */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.alert-card {
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  display: flex;
  gap: 1rem;
}

.alert-icon { font-size: 1.5rem; flex-shrink: 0; }

.alert-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.alert-warning {
  background-color: var(--accent-warning-subtle);
  border: 1px solid hsla(38, 92%, 52%, 0.3);
}
.alert-warning h3 { color: var(--accent-warning); }

.alert-info {
  background-color: var(--accent-info-subtle);
  border: 1px solid hsla(195, 88%, 52%, 0.3);
}
.alert-info h3 { color: var(--accent-info); }

/* Comparison Grid */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.pro-con-column {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.column-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.column-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
}

.pro-column .column-header h3 { color: var(--accent-success); }
.con-column .column-header h3 { color: var(--accent-danger); }

.pro-con-item {
  padding: 0.85rem 1rem;
  background-color: var(--bg-surface-elevated);
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  line-height: 1.5;
}

/* Blueprints */
.blueprints-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.blueprint-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  position: relative;
}

.featured-blueprint {
  border-color: var(--accent-primary);
  background-color: var(--bg-surface);
  box-shadow: 0 0 0 1px var(--accent-primary-subtle);
}

.blueprint-badge {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background-color: var(--accent-primary-subtle);
  color: var(--accent-primary);
}

.blueprint-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.bp-number {
  font-size: 1.6rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.bp-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.bp-body {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.bp-callout {
  padding: 0.9rem 1.2rem;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-elevated);
  border-left: 3px solid var(--accent-primary);
  font-size: 0.88rem;
}

.bp-steps {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.88rem;
}

.step-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--accent-primary-subtle);
  color: var(--accent-primary);
  font-weight: 700;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

/* Calculator & Email Generator */
.calculator-card, .email-gen-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.quiz-group { margin-bottom: 1.5rem; }

.quiz-label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.radio-options, .checkbox-options, .gen-checkboxes {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.radio-btn, .checkbox-btn, .gen-checkbox {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  font-size: 0.88rem;
  transition: all 0.15s ease;
  min-height: 48px;
}

.radio-btn:hover, .checkbox-btn:hover, .gen-checkbox:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--border-strong);
}

.radio-btn input, .checkbox-btn input, .gen-checkbox input {
  accent-color: var(--accent-primary);
  width: 18px;
  height: 18px;
}

.quiz-result {
  margin-top: 1.5rem;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
}

.quiz-result.hidden { display: none; }

.result-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.result-score-badge {
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
}

.result-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.result-rec-box {
  padding: 1.1rem 1.25rem;
  background-color: var(--bg-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.rec-title {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--accent-primary);
  margin-bottom: 0.35rem;
}

.email-gen-card {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.control-title {
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 0.75rem;
}

.email-preview-container {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-surface-elevated);
  overflow: hidden;
}

.email-preview-header {
  padding: 0.75rem 1.25rem;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.82rem;
  color: var(--text-muted);
  gap: 0.5rem;
}

.email-preview-body {
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 380px;
  overflow-y: auto;
}

.doc-footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.82rem;
}

.footer-meta {
  margin-top: 0.5rem;
  font-size: 0.75rem;
}

/* ==========================================================================
   Mobile Responsiveness Breakdown
   ========================================================================== */

@media (max-width: 1080px) {
  .stats-row, .privilege-cards-grid, .arch-modules-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .mobile-menu-btn {
    display: inline-flex;
  }

  .hide-mobile {
    display: none !important;
  }

  .nav-search {
    display: none;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    width: 290px;
    height: 100vh;
    z-index: 200;
    transition: left 0.25s ease;
    box-shadow: var(--shadow-lg);
  }

  .sidebar.open {
    left: 0;
  }

  .sidebar-backdrop.active {
    display: block;
  }

  .close-sidebar-btn {
    display: block;
  }

  .content-area {
    padding: 1.5rem 1rem;
  }

  .stats-row, .grid-2, .comparison-grid, .privilege-cards-grid, .arch-modules-grid {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-desc {
    font-size: 0.95rem;
  }

  .arch-container, .calculator-card, .email-gen-card, .blueprint-card {
    padding: 1.25rem;
  }

  .blueprint-badge {
    position: static;
    display: inline-block;
    margin-bottom: 0.75rem;
  }

  .blueprint-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
}