@import url('https://fonts.googleapis.com/css2?family=Exo+2:ital,wght@0,300;0,600;0,800;0,900;1,300;1,600;1,800;1,900&display=swap');

/* ==========================================================================
   iOS Font Builder - Main Stylesheet
   Design Philosophy: Modern, Apple HIG-inspired, Touch-First (iPad/iPhone), Zero-CLS
   Typography: Exo 2 (300 Light body, 600 Semibold accents, 800 ExtraBold tagline, 900 Black headline)
   ========================================================================== */

:root {
  --font-sans: 'Exo 2', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  /* Color Palette - Light Mode Default */
  --color-bg: #f5f5f7;
  --color-surface: #ffffff;
  --color-surface-subtle: #fbfbfd;
  --color-surface-hover: #f0f0f3;
  --color-border: #d2d2d7;
  --color-border-subtle: #e5e5ea;
  
  --color-text-primary: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-text-tertiary: #86868b;
  
  --color-accent: #0071e3;
  --color-accent-hover: #0077ed;
  --color-accent-active: #006edb;
  --color-accent-light: #e8f2fc;
  
  --color-success: #34c759;
  --color-warning: #ff9500;
  --color-danger: #ff3b30;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);

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

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #000000;
    --color-surface: #1c1c1e;
    --color-surface-subtle: #2c2c2e;
    --color-surface-hover: #3a3a3c;
    --color-border: #38383a;
    --color-border-subtle: #2c2c2e;

    --color-text-primary: #f5f5f7;
    --color-text-secondary: #a1a1a6;
    --color-text-tertiary: #86868b;

    --color-accent: #2997ff;
    --color-accent-hover: #47a6ff;
    --color-accent-active: #148bff;
    --color-accent-light: #162a45;
  }
}

/* --------------------------------------------------------------------------
   Reset & Base Styles
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-sans);
  font-weight: 300; /* Light 300 for regular body text */
  background-color: var(--color-bg);
  background-image: url('../ios-font-builder-background.jpg');
  background-attachment: fixed;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--color-text-primary);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

strong, b {
  font-weight: 600; /* Semibold 600 for 'bold' accents */
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 600;
}

.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.25rem;
  background-color: #daf1f2;
}

/* --------------------------------------------------------------------------
   AdSense Safe Zones (Zero Cumulative Layout Shift Guaranteed)
   -------------------------------------------------------------------------- */
.ad-slot-container {
  display: block;
  position: relative;
  background-color: var(--color-surface-subtle);
  border: 1px dashed var(--color-border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin: 1.5rem auto;
  text-align: center;
  box-sizing: border-box;
}

.ad-slot-container .adsbygoogle {
  display: block !important;
  width: 100% !important;
  margin: 0 auto;
}

.ad-slot-leaderboard {
  width: 100%;
  max-width: 728px;
  min-height: 50px;
}

@media (min-width: 768px) {
  .ad-slot-leaderboard {
    min-height: 90px;
  }
}

.ad-slot-rectangle {
  width: 100%;
  max-width: 300px;
  min-height: 250px;
  margin: 2rem auto;
}

.ad-placeholder-label {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --------------------------------------------------------------------------
   Header & Hero Typography
   -------------------------------------------------------------------------- */
.site-header {
  padding: 2.5rem 0 1.5rem;
  text-align: center;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.85rem;
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
}

/* Main Page Headline: Black 900 (fits mobile screen without breaking) */
.landing-main-title,
.site-title {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(2.15rem, 8.2vw, 3.85rem);
  letter-spacing: -0.025em;
  line-height: 1.08;
  margin: 0.6rem auto 0.35rem;
  color: var(--color-text-primary);
  text-align: center;
  word-break: keep-all;
  overflow-wrap: normal;
}

/* Tagline below headline: ExtraBold 800 */
.landing-tagline,
.site-tagline {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(1.2rem, 3.8vw, 1.85rem);
  letter-spacing: -0.015em;
  line-height: 1.25;
  color: var(--color-text-primary);
  margin: 0.35rem auto 0.85rem;
  text-align: center;
}

.site-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  font-weight: 300;
  max-width: 600px;
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Drop Zone Component (Touch-First Tap & Drag Target)
   -------------------------------------------------------------------------- */
.drop-zone-card {
  background-color: var(--color-surface);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: 3rem 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-normal), background-color var(--transition-normal), transform var(--transition-fast);
  cursor: pointer;
  outline: none;
  user-select: none;
}

.drop-zone-card:hover {
  border-color: var(--color-accent);
  background-color: var(--color-surface-subtle);
}

.drop-zone-card:focus-visible {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-light);
}

.drop-zone-card:active {
  transform: scale(0.99);
  background-color: var(--color-surface-hover);
}

.drop-zone-card.drag-active {
  border-color: var(--color-accent);
  background-color: var(--color-accent-light);
  transform: scale(1.01);
}

.drop-zone-icon {
  font-size: 3.25rem;
  margin-bottom: 0.75rem;
  display: block;
}

.drop-zone-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.drop-zone-desc {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 1.25rem;
}

.drop-zone-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.pill-tag {
  display: inline-block;
  padding: 0.3rem 0.6rem;
  background-color: var(--color-border-subtle);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  font-family: var(--font-mono);
}

/* --------------------------------------------------------------------------
   URL Ingestion Panel
   -------------------------------------------------------------------------- */
.url-panel {
  margin-top: 1rem;
  animation: fadeIn 0.2s ease forwards;
}

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

.url-input-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.url-field {
  flex: 1;
  min-width: 260px;
}

.url-hint {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  margin-top: 0.5rem;
  line-height: 1.4;
  word-break: break-all;
}

.url-hint code {
  background-color: var(--color-surface-subtle);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-family: var(--font-mono);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   Buttons & Form Controls (Touch Compliant >= 44x44px)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  min-height: 44px;
  min-width: 44px;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

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

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

.btn-primary:active {
  background-color: var(--color-accent-active);
  transform: scale(0.98);
}

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

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

.btn-secondary:active {
  background-color: var(--color-border-subtle);
  transform: scale(0.98);
}

.btn-danger {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--color-danger);
}

.btn-danger:hover {
  background-color: rgba(255, 59, 48, 0.1);
  border-color: var(--color-danger);
}

.btn-icon {
  background: none;
  border: none;
  font-size: 1rem;
  color: var(--color-text-tertiary);
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  color: var(--color-danger);
  background-color: rgba(255, 59, 48, 0.1);
}

/* Toggle Switch */
.switch-control {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  user-select: none;
  font-size: 0.9375rem;
  font-weight: 500;
  min-height: 44px;
}

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

.switch-track {
  width: 48px;
  height: 28px;
  background-color: var(--color-border);
  border-radius: var(--radius-full);
  position: relative;
  transition: background-color var(--transition-fast);
}

.switch-thumb {
  width: 24px;
  height: 24px;
  background-color: #ffffff;
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.switch-input:checked + .switch-track {
  background-color: var(--color-accent);
}

.switch-input:checked + .switch-track .switch-thumb {
  transform: translateX(20px);
}

.text-input {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  min-height: 44px;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}

.text-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

/* --------------------------------------------------------------------------
   Workspace & Bundle Cards
   -------------------------------------------------------------------------- */
.workspace-section {
  margin-top: 2.5rem;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.bundles-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.bundle-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal);
}

.bundle-card:hover {
  box-shadow: var(--shadow-md);
}

.bundle-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.bundle-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.bundle-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.bundle-fonts-list {
  border-top: 1px solid var(--color-border-subtle);
  padding-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.font-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0.75rem;
  background-color: var(--color-surface-subtle);
  border-radius: var(--radius-md);
  gap: 0.5rem;
}

.font-item-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.font-style-pill {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: var(--radius-full);
}

.font-name-label {
  font-size: 0.9375rem;
  font-weight: 500;
}

.format-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.format-badge.OTF {
  background-color: #e0f2fe;
  color: #0369a1;
}

.format-badge.TTF {
  background-color: #fef3c7;
  color: #92400e;
}

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

.font-size-label {
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
  font-family: var(--font-mono);
}

/* --------------------------------------------------------------------------
   Visual iOS Installation Guide
   -------------------------------------------------------------------------- */
.guide-section {
  margin: 3.5rem 0 2rem;
}

.section-heading {
  text-align: center;
  margin-bottom: 2rem;
}

.section-heading h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.section-heading p {
  color: var(--color-text-secondary);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.guide-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.guide-step-num {
  width: 34px;
  height: 34px;
  background-color: var(--color-accent);
  color: #ffffff;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.75rem;
  font-size: 0.875rem;
}

.guide-card-icon {
  font-size: 2.25rem;
  margin-bottom: 0.5rem;
  display: block;
}

.guide-card-title {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.guide-card-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

/* --------------------------------------------------------------------------
   Global Network Navigation Bar (#nav)
   -------------------------------------------------------------------------- */
#nav {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0.5rem 0 0;
  position: relative;
  z-index: 1000;
}

/* --------------------------------------------------------------------------
   Legal & Footer
   -------------------------------------------------------------------------- */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border-subtle);
  background-color: transparent;
  padding: 2.5rem 0 2rem;
}

.disclaimer-card {
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.disclaimer-card strong {
  color: var(--color-text-primary);
}

.footer-bottom {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
}

/* --------------------------------------------------------------------------
   TheHelpful Global Network Footer (.th-footer)
   -------------------------------------------------------------------------- */
.th-footer {
  margin-top: 2rem;
  padding: 2.5rem 1rem 3rem;
  border-top: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface-subtle);
  color: var(--color-text-primary);
  width: 100%;
}

.th-container {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.th-brand a {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.th-brand a:hover {
  color: var(--color-accent);
}

.th-tagline {
  margin-top: 0.25rem;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.th-network-links ul {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1rem;
}

.th-network-links li {
  display: inline-block;
}

.th-network-links a {
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  font-size: 0.9rem;
}

.th-network-links a:hover {
  color: var(--color-accent-hover);
}

.th-legal p {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--color-text-tertiary);
}

.th-legal a {
  color: var(--color-text-secondary);
  text-decoration: none;
  white-space: nowrap;
}

.th-legal a:hover {
  text-decoration: underline;
  color: var(--color-text-primary);
}

/* --------------------------------------------------------------------------
   Toasts & Loading Overlays
   -------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: calc(100% - 3rem);
}

@media (max-width: 600px) {
  .toast-container {
    left: 1.5rem;
    right: 1.5rem;
    bottom: 1rem;
  }
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.25rem;
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  font-weight: 500;
  animation: toastSlideIn 0.25s ease forwards;
  max-width: 480px;
}

.toast-msg {
  flex: 1;
  line-height: 1.4;
}

.toast-persistent {
  cursor: pointer;
  border-left: 4px solid var(--color-warning);
}

.toast-dismiss-btn {
  background: none;
  border: none;
  font-size: 1rem;
  color: var(--color-text-tertiary);
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  margin-left: 0.5rem;
  border-radius: 4px;
}

.toast-dismiss-btn:hover {
  color: var(--color-text-primary);
  background-color: var(--color-surface-hover);
}

.toast-success {
  border-left: 4px solid var(--color-success);
}

.toast-warning {
  border-left: 4px solid var(--color-warning);
}

.toast-fade-out {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

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

.loading-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

.loading-box {
  background-color: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  text-align: center;
  max-width: 90%;
  min-width: 280px;
}

.loading-text {
  font-size: 1.0625rem;
  font-weight: 600;
}

.loading-subtext {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  background-color: var(--color-surface-subtle);
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-top: 0.6rem;
  border: 1px solid var(--color-border-subtle);
  animation: fadeIn 0.15s ease forwards;
}

.spinner {
  width: 44px;
  height: 44px;
  border: 4px solid var(--color-border-subtle);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 1rem;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.hidden {
  display: none !important;
}

/* --------------------------------------------------------------------------
   App Navigation Bar (app.html)
   -------------------------------------------------------------------------- */
.app-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  margin-bottom: 0.5rem;
}

.nav-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 600;
  min-height: 44px;
  padding: 0.5rem 0;
  transition: opacity var(--transition-fast);
}

.nav-back-link:hover {
  text-decoration: underline;
  opacity: 0.85;
}

.nav-brand-tag {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --------------------------------------------------------------------------
   Landing Page Styles (index.html)
   -------------------------------------------------------------------------- */
.landing-hero {
  text-align: center;
  padding: 2.5rem 1rem 2rem;
}

.landing-headline {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--color-text-primary);
  margin-top: 1rem;
  margin-bottom: 1rem;
}

.landing-subheadline {
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  color: var(--color-text-secondary);
  max-width: 680px;
  margin: 0 auto 2rem;
  line-height: 1.5;
}

.hero-cta-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.btn-hero-cta {
  font-size: 1.125rem;
  font-weight: 700;
  padding: 0.95rem 2.25rem;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(0, 113, 227, 0.35);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 113, 227, 0.45);
}

.trust-signal {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-success);
}

.landing-section {
  margin: 3.5rem 0;
}

.section-header-center {
  text-align: center;
  margin-bottom: 2rem;
}

.section-title-lg {
  font-size: clamp(1.5rem, 3.5vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
}

.content-card {
  background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-surface) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

.text-content {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text-primary);
}

.text-content p + p {
  margin-top: 1.25rem;
}

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

.feature-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: var(--color-text-primary);
}

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

/* Author Spotlight Card (E-E-A-T) */
.author-spotlight-card {
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-subtle) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.author-spotlight-card::before {
  content: "Aa";
  position: absolute;
  right: -10px;
  bottom: -20px;
  font-size: 12rem;
  font-weight: 900;
  font-family: serif;
  color: var(--color-border-subtle);
  opacity: 0.35;
  pointer-events: none;
  line-height: 1;
}

.author-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

/* FAQ Accordion / List */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 800px;
  margin: 0 auto;
}

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

.faq-item[open] {
  border-color: var(--color-border);
}

.faq-question {
  font-size: 1.0625rem;
  font-weight: 600;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  user-select: none;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text-primary);
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: "+";
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--color-text-tertiary);
  transition: transform var(--transition-fast);
}

.faq-item[open] .faq-question::after {
  content: "−";
}

.faq-answer {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.faq-answer p + p {
  margin-top: 0.75rem;
}

/* Bottom CTA Banner */
.landing-cta-bottom {
  margin: 4rem 0 2rem;
  text-align: center;
}

.cta-box {
  background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-surface) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 3rem 1.5rem;
  box-shadow: var(--shadow-md);
}

.cta-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  color: var(--color-text-primary);
}

.cta-desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.75rem;
}