/* ==========================================================================
   InvoiceGen Pro — Main Stylesheet
   Modern, SaaS-inspired, Responsive, Dark/Light Theme
   ========================================================================== */

:root {
  /* Colors - Light Theme */
  --bg-body: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-alt: #F1F5F9;
  --bg-surface-hover: #E2E8F0;
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --border-color: #E2E8F0;
  --border-focus: #3B82F6;
  
  /* Brand Accents */
  --accent-primary: #2563EB;
  --accent-primary-rgb: 37, 99, 235;
  --accent-hover: #1D4ED8;
  --accent-light: #EFF6FF;
  --accent-active: #1E40AF;

  /* Status Colors */
  --status-paid: #10B981;
  --status-paid-bg: #ECFDF5;
  --status-unpaid: #EF4444;
  --status-unpaid-bg: #FEF2F2;
  --status-partial: #F59E0B;
  --status-partial-bg: #FFFBEB;
  --status-pending: #6366F1;
  --status-pending-bg: #EEF2FF;

  /* UI Tokens */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --container-max: 1380px;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --bg-body: #0B0F19;
  --bg-surface: #131B2E;
  --bg-surface-alt: #1E293B;
  --bg-surface-hover: #334155;
  --text-primary: #F8FAFC;
  --text-secondary: #CBD5E1;
  --text-muted: #64748B;
  --border-color: #1E293B;
  --border-focus: #60A5FA;
  --accent-light: #1E293B;
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* Accessibility */
:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--accent-primary);
  color: #FFFFFF;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
  text-decoration: none;
  font-weight: 600;
}
.skip-link:focus {
  top: 1rem;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.brand-logo {
  height: 38px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.5rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem 0.25rem;
  position: relative;
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent-primary);
  border-radius: 2px;
}

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

.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.theme-toggle-btn:hover {
  background: var(--bg-surface-hover);
  color: var(--accent-primary);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0.5rem;
}

/* ==========================================================================
   Hero Section (Compact & Fast)
   ========================================================================== */
.hero-compact {
  padding: 1.75rem 0 1rem;
  text-align: center;
}

.hero-compact h1 {
  font-size: 1.875rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.hero-compact p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 1.25rem;
  line-height: 1.6;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  box-shadow: var(--shadow-sm);
}

.hero-badge svg {
  color: #10B981;
}

/* ==========================================================================
   AdSense Placement Containers (Compliant & Subtle)
   ========================================================================== */
.ad-container {
  margin: 1.25rem auto;
  max-width: 970px;
  text-align: center;
  overflow: hidden;
}

.ad-label {
  display: block;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
  font-weight: 600;
}

.ad-slot {
  background: var(--bg-surface-alt);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.8125rem;
  padding: 1rem;
}

/* ==========================================================================
   Action Bar / Quick Tools
   ========================================================================== */
.quick-toolbar {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.75rem 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  box-shadow: var(--shadow-sm);
}

.toolbar-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ==========================================================================
   Button System
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1.25;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #FFFFFF;
}
.btn-primary:hover {
  background-color: var(--accent-hover);
  box-shadow: 0 4px 12px rgba(var(--accent-primary-rgb), 0.3);
}

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

.btn-outline {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--text-secondary);
}
.btn-outline:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--accent-light);
}

.btn-success {
  background-color: #10B981;
  color: #FFFFFF;
}
.btn-success:hover {
  background-color: #059669;
}

.btn-danger {
  background-color: #EF4444;
  color: #FFFFFF;
}
.btn-danger:hover {
  background-color: #DC2626;
}

.btn-danger-outline {
  background: transparent;
  color: #EF4444;
  border-color: #FCA5A5;
}
.btn-danger-outline:hover {
  background: #FEF2F2;
  border-color: #EF4444;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

.btn-icon {
  padding: 0.5rem;
  border-radius: var(--radius-md);
  min-width: 36px;
  min-height: 36px;
}

/* ==========================================================================
   Two-Column App Workspace (Left Form / Right Preview)
   ========================================================================== */
.generator-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 1.75rem;
  align-items: start;
  margin-bottom: 2.5rem;
}

/* Left: Invoice Editor Form */
.editor-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: 1.75rem;
}

.editor-section {
  margin-bottom: 1.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.editor-section:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.section-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-title svg {
  color: var(--accent-primary);
}

.section-subtitle {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* Form Controls */
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-label .required {
  color: #EF4444;
  margin-left: 0.15rem;
}

.form-control {
  width: 100%;
  font-family: inherit;
  font-size: 0.9375rem;
  padding: 0.6rem 0.85rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(var(--accent-primary-rgb), 0.15);
  outline: none;
}

.form-control::placeholder {
  color: var(--text-muted);
}

textarea.form-control {
  min-height: 75px;
  resize: vertical;
}

.checkbox-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.checkbox-group input[type="checkbox"] {
  width: 17px;
  height: 17px;
  accent-color: var(--accent-primary);
  cursor: pointer;
}

.checkbox-group label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
}

/* Logo Upload Box */
.logo-upload-box {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: var(--bg-surface-alt);
  padding: 1rem;
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border-color);
}

.logo-preview-thumb {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.logo-preview-thumb img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.logo-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

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

/* Line Items Table */
.items-table-wrapper {
  overflow-x: auto;
  margin-bottom: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.items-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.items-table th {
  background: var(--bg-surface-alt);
  padding: 0.75rem 0.6rem;
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.items-table td {
  padding: 0.6rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: top;
}

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

.items-table input {
  padding: 0.5rem 0.6rem;
  font-size: 0.875rem;
}

.item-name-input {
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.item-desc-input {
  font-size: 0.8125rem !important;
  color: var(--text-secondary);
}

.item-total-col {
  font-weight: 700;
  text-align: right;
  padding-top: 0.9rem !important;
  white-space: nowrap;
}

.item-actions-col {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding-top: 0.75rem !important;
}

.btn-item-del {
  color: #EF4444;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.35rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.btn-item-del:hover {
  background: #FEE2E2;
}

.btn-item-dup {
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.35rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.btn-item-dup:hover {
  background: var(--bg-surface-alt);
  color: var(--accent-primary);
}

/* Summary Calculations Card in Editor */
.editor-summary {
  background: var(--bg-surface-alt);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.summary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.summary-row.total {
  border-top: 2px dashed var(--border-color);
  padding-top: 0.75rem;
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--text-primary);
}

.summary-row.due {
  font-size: 1.05rem;
  font-weight: 700;
  color: #EF4444;
}

.summary-input-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  max-width: 200px;
}

/* Customization Box (Template & Color Picker) */
.customization-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
  background: var(--bg-surface-alt);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-lg);
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-color);
}

.customization-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.color-presets {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.color-preset-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease;
}

.color-preset-dot:hover, .color-preset-dot.active {
  transform: scale(1.2);
  border-color: var(--bg-surface);
  box-shadow: 0 0 0 2px var(--accent-primary);
}

.color-picker-input {
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  cursor: pointer;
  background: none;
}

/* Right: Preview Column */
.preview-sticky-wrap {
  position: sticky;
  top: 88px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.preview-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.6rem 1rem;
  box-shadow: var(--shadow-sm);
}

.preview-scale-info {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

.invoice-preview-viewport {
  background: #525659;
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  overflow: auto;
  max-height: calc(100vh - 160px);
  display: flex;
  justify-content: center;
}

[data-theme="dark"] .invoice-preview-viewport {
  background: #0B0E14;
}

/* Mobile Toggle Tab for Preview/Editor */
.view-toggle-tabs {
  display: none;
  grid-template-columns: 1fr 1fr;
  background: var(--bg-surface-alt);
  padding: 0.3rem;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
}

.view-tab-btn {
  padding: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  background: none;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.view-tab-btn.active {
  background: var(--bg-surface);
  color: var(--accent-primary);
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

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

.modal-content {
  background: var(--bg-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-color);
  width: 100%;
  max-width: 650px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalFadeIn 0.2s ease-out;
}

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

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
}

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

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  background: var(--bg-surface-alt);
}

/* Saved Invoices Table */
.saved-table-wrap {
  overflow-x: auto;
}

.saved-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.saved-table th, .saved-table td {
  padding: 0.75rem 0.6rem;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}

.saved-table th {
  background: var(--bg-surface-alt);
  font-weight: 600;
  color: var(--text-secondary);
}

.saved-empty-state {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--text-muted);
}

/* Status Badges */
.badge-status {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-paid {
  background: var(--status-paid-bg);
  color: var(--status-paid);
}

.badge-unpaid {
  background: var(--status-unpaid-bg);
  color: var(--status-unpaid);
}

.badge-partially-paid {
  background: var(--status-partial-bg);
  color: var(--status-partial);
}

.badge-pending {
  background: var(--status-pending-bg);
  color: var(--status-pending);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-xl);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  pointer-events: auto;
  animation: toastSlideUp 0.3s ease-out;
  max-width: 380px;
}

@keyframes toastSlideUp {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.toast.toast-success {
  border-left: 4px solid #10B981;
}

.toast.toast-error {
  border-left: 4px solid #EF4444;
}

.toast.toast-info {
  border-left: 4px solid var(--accent-primary);
}

/* ==========================================================================
   Informational & SEO Content Sections
   ========================================================================== */
.content-section {
  padding: 3.5rem 0;
  border-top: 1px solid var(--border-color);
}

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

.section-head-center {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 2.5rem;
}

.section-head-center h2 {
  font-size: 1.875rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.section-head-center p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Features / Benefits Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-primary);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--accent-light);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Target Audience Grid */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.audience-pill {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  box-shadow: var(--shadow-sm);
}

.audience-pill svg {
  color: var(--accent-primary);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.audience-pill h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.audience-pill p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* FAQ Accordion */
.faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--accent-primary);
}

.faq-arrow {
  transition: transform 0.25s ease;
  color: var(--text-muted);
}

.faq-item.open .faq-arrow {
  transform: rotate(180deg);
  color: var(--accent-primary);
}

.faq-answer {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  display: none;
}

.faq-item.open .faq-answer {
  display: block;
}

/* Informative Content Articles */
.content-article {
  max-width: 840px;
  margin: 0 auto;
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.content-article h1, .content-article h2, .content-article h3 {
  color: var(--text-primary);
  margin: 1.75rem 0 0.75rem;
}

.content-article p {
  margin-bottom: 1.25rem;
}

.content-article ul, .content-article ol {
  margin: 0 0 1.5rem 1.5rem;
}

.content-article li {
  margin-bottom: 0.5rem;
}

.content-article a {
  color: var(--accent-primary);
  text-decoration: underline;
}

.alert-notice {
  background: var(--bg-surface-alt);
  border-left: 4px solid var(--accent-primary);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.5rem 0;
  font-size: 0.9375rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding: 3.5rem 0 2rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.8fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-brand p {
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  max-width: 320px;
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: var(--transition);
}

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

.footer-disclaimer-box {
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 2rem;
  text-align: center;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.875rem;
  color: var(--text-muted);
}