/* Mark It Down - Warm Minimalism Design System */
/* Japanese "Ma" (間) - Intentional breathing room */

/* ========================================
   1. DESIGN TOKENS & CSS VARIABLES
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Lora:wght@400;500;600&family=Raleway:wght@300;400;500;600&display=swap');

:root {
  /* Warm Color Palette - Parchment-inspired warm tones */
  --bg-primary: #F2EDE4;
  --bg-secondary: #EBE6DC;
  --bg-accent: #E4DED4;
  --bg-card: #FAF7F2;

  /* Text Colors - Warm tones with good contrast */
  --text-primary: #2D2A26;
  --text-secondary: #5C5854;
  --text-muted: #696460;

  /* Accent - Rich parchment brown */
  --accent-primary: #6B4E37;
  --accent-hover: #5A4030;
  --accent-light: rgba(107, 78, 55, 0.08);

  /* Borders - Warm parchment tones */
  --border-primary: #C8C0B4;
  --border-subtle: #E4DED4;
  --border-card: rgba(43, 43, 43, 0.06);

  /* Shadows - Layered for depth and warmth (using accent color) */
  --shadow-sm: 0 1px 2px rgba(107, 78, 55, 0.04);
  --shadow-md: 0 4px 16px rgba(107, 78, 55, 0.06), 0 2px 4px rgba(107, 78, 55, 0.04);
  --shadow-lg: 0 8px 32px rgba(107, 78, 55, 0.1), 0 4px 8px rgba(107, 78, 55, 0.05);
  --shadow-card: 0 2px 8px rgba(107, 78, 55, 0.05), 0 1px 2px rgba(107, 78, 55, 0.03);
  --shadow-screenshot: 0 16px 48px rgba(43, 43, 43, 0.12), 0 8px 16px rgba(107, 78, 55, 0.08);

  /* Typography */
  --font-serif: 'Lora', Georgia, serif;
  --font-sans: 'Raleway', -apple-system, BlinkMacSystemFont, sans-serif;

  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.75rem;
  --font-size-hero: 3.5rem;

  /* Spacing - Balanced for Ma (間) principle */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-section: 6rem;
  --spacing-hero: 8rem;

  /* Line Height */
  --line-height-tight: 1.3;
  --line-height-normal: 1.7;
  --line-height-relaxed: 1.9;

  /* Letter Spacing */
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.02em;

  /* Border Radius - Subtle, warm curves */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions - Smooth ease-out for natural feel */
  --transition-fast: 150ms ease-out;
  --transition-base: 250ms ease-out;
  --transition-slow: 400ms ease-out;
}

/* ========================================
   2. BASE STYLES
   ======================================== */

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: var(--line-height-relaxed);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Parchment grain texture — gives materiality to the flat background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ========================================
   3. ACCESSIBILITY
   ======================================== */

.skip-to-content {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--font-size-sm);
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-to-content:focus {
  top: 0;
  outline: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

:focus:not(:focus-visible) {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ========================================
   4. LAYOUT
   ======================================== */

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-lg);
}

/* ========================================
   5. HEADER
   ======================================== */

header {
  position: static;
  text-align: center;
  padding: var(--spacing-lg) 0 var(--spacing-2xl);
}

.header-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.header-logo a {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  text-decoration: none;
  color: inherit;
  transition: opacity var(--transition-base);
}

.header-logo a:hover {
  opacity: 0.8;
}

.logo-icon {
  width: 56px;
  height: 56px;
  object-fit: contain;
  opacity: 0.9;
}

header h1 {
  font-family: var(--font-serif);
  font-size: var(--font-size-3xl);
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: var(--letter-spacing-tight);
  margin: 0;
}

header .tagline {
  font-family: var(--font-sans);
  font-size: var(--font-size-lg);
  font-weight: 300;
  color: var(--text-secondary);
  margin-top: var(--spacing-sm);
  letter-spacing: var(--letter-spacing-wide);
}

/* ========================================
   5.1. HEADER NAVIGATION
   ======================================== */

.header-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-primary);
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 1px 3px rgba(107, 78, 55, 0.05);
  transition: box-shadow var(--transition-base);
  width: 100%;
}

.header-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: nowrap;
  gap: var(--spacing-xs);
  justify-content: center;
  align-items: center;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.header-nav ul::-webkit-scrollbar {
  display: none;
}

.header-nav li {
  margin: 0;
  flex-shrink: 0;
}

.header-nav a {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.header-nav a:hover {
  color: var(--accent-primary);
  background-color: var(--accent-light);
}

.header-nav a[aria-current="page"] {
  color: var(--accent-primary);
  font-weight: 500;
}

/* Language switcher in header */
.header-nav .lang-switcher {
  margin-left: var(--spacing-xs);
  padding-left: var(--spacing-xs);
  border-left: 1px solid var(--border-subtle);
}

.header-nav .lang-switcher a {
  font-weight: 500;
  color: var(--text-muted);
}

.header-nav .lang-switcher a:hover {
  color: var(--accent-primary);
}

@media (max-width: 768px) {
  .header-nav {
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
  }

  .header-nav ul {
    gap: 0.25rem;
    justify-content: flex-start;
    padding: 0 var(--spacing-xs);
  }

  .header-nav a {
    font-size: 0.7rem;
    padding: 0.5rem 0.4rem;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .header-nav .lang-switcher {
    margin-left: 0.25rem;
    padding-left: 0.25rem;
  }
}

/* ========================================
   5.2. FEATURE BADGES
   ======================================== */

.feature-badge {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-sm);
  margin-left: var(--spacing-xs);
  vertical-align: middle;
  letter-spacing: 0.02em;
}

.feature-badge.pending {
  background-color: rgba(255, 193, 7, 0.15);
  color: #B8860B;
  border: 1px solid rgba(255, 193, 7, 0.3);
}

.feature-badge.new {
  background-color: rgba(107, 78, 55, 0.1);
  color: var(--accent-primary);
  border: 1px solid rgba(107, 78, 55, 0.2);
}

/* ========================================
   6. MAIN CONTENT
   ======================================== */

main {
  padding: 0;
}

section {
  margin-bottom: var(--spacing-section);
}

/* ========================================
   7. TYPOGRAPHY
   ======================================== */

h2 {
  font-family: var(--font-serif);
  font-size: var(--font-size-2xl);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  letter-spacing: var(--letter-spacing-tight);
  line-height: var(--line-height-tight);
}

h3 {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  letter-spacing: var(--letter-spacing-tight);
}

p {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-md);
}

/* ========================================
   8. HERO SECTION
   ======================================== */

.hero {
  text-align: center;
  padding: var(--spacing-lg) 0 var(--spacing-xl);
}

.hero-tagline {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 400;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.hero-fact {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  opacity: 0.72;
  max-width: 520px;
  margin: 0 auto var(--spacing-lg);
  letter-spacing: 0.01em;
}

.hero-subtitle {
  font-family: var(--font-sans);
  font-size: var(--font-size-lg);
  font-weight: 300;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto var(--spacing-xl);
  line-height: var(--line-height-relaxed);
}

.hero-image {
  margin: var(--spacing-2xl) 0;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-md);
}

/* ========================================
   8.1. ENTRANCE ANIMATIONS
   ======================================== */

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Staggered page load — each section fades in sequentially */
.hero              { animation: fadeUp 800ms cubic-bezier(0.16, 1, 0.3, 1) both; }
.philosophy        { animation: fadeUp 800ms cubic-bezier(0.16, 1, 0.3, 1) 150ms both; }
.flow-section      { animation: fadeUp 800ms cubic-bezier(0.16, 1, 0.3, 1) 300ms both; }
.screenshot-section { animation: fadeUp 800ms cubic-bezier(0.16, 1, 0.3, 1) 400ms both; }

/* Scroll-triggered reveal for below-fold sections */
.workflow-section,
.coming-soon-section,
.faq-preview-section,
.cta-section {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.workflow-section.is-visible,
.coming-soon-section.is-visible,
.faq-preview-section.is-visible,
.cta-section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hero decorative ornament — a typographic flourish */
.hero-ornament {
  display: block;
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--border-primary);
  letter-spacing: 0.3em;
  margin-top: var(--spacing-lg);
  user-select: none;
  opacity: 0.5;
}

/* ========================================
   9. PHILOSOPHY SECTION
   ======================================== */

.philosophy {
  padding: var(--spacing-2xl) 0;
  text-align: center;
}

.philosophy-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  max-width: 500px;
  margin: 0 auto;
}

.philosophy-item {
  padding: var(--spacing-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all 300ms cubic-bezier(0.44, 0, 0.56, 1);
  cursor: default;
}

.philosophy-item:hover {
  border-color: var(--border-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.philosophy-item::before {
  display: none;
}

.philosophy-icon {
  width: 28px;
  height: 28px;
  margin: 0 auto var(--spacing-xs);
  color: var(--accent-primary);
}

.philosophy-icon svg {
  width: 100%;
  height: 100%;
}

.philosophy-item h3 {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.philosophy-item p {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  margin: 0;
  line-height: var(--line-height-relaxed);
}

/* Section Labels - visual differentiation for headings */
.section-label {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-primary);
  background: var(--accent-light);
  padding: 3px 12px;
  border-radius: 20px;
  margin-bottom: var(--spacing-sm);
}

/* Flow Section (Information Flow Philosophy) */
.flow-section {
  padding: var(--spacing-2xl) var(--spacing-lg);
  margin: 0 calc(-1 * var(--spacing-lg));
  margin-bottom: var(--spacing-xl);
  text-align: center;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
}

.flow-section h2 {
  font-family: var(--font-serif);
  font-size: var(--font-size-2xl);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  letter-spacing: var(--letter-spacing-wide);
}

.flow-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
}

.flow-section .philosophy-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  max-width: 800px;
}

/* Flow item with icon */
.flow-item {
  position: relative;
  padding: var(--spacing-md);
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.flow-item:hover {
  border-color: var(--border-primary);
  box-shadow: var(--shadow-card);
}

.flow-icon {
  width: 24px;
  height: 24px;
  margin: 0 auto var(--spacing-xs);
  color: var(--accent-primary);
}

.flow-icon svg {
  width: 100%;
  height: 100%;
}

.flow-item p {
  text-wrap: balance;
}

/* Arrow between flow items */
.flow-arrow {
  display: none;
}

@media (min-width: 769px) {
  .flow-section .philosophy-list {
    position: relative;
  }

  .flow-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: var(--font-size-lg);
  }
}

@media (max-width: 768px) {
  .flow-section .philosophy-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .flow-section .philosophy-list {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   10. BUTTONS
   ======================================== */

.buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  justify-content: center;
  margin-top: var(--spacing-xl);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.875rem 2rem;
  min-height: 52px;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: var(--font-size-base);
  letter-spacing: var(--letter-spacing-wide);
  cursor: pointer;
  border: none;
  transition: all 400ms cubic-bezier(0.44, 0, 0.56, 1);
  -webkit-tap-highlight-color: transparent;
}

.btn-primary {
  background: var(--accent-primary);
  color: white;
  box-shadow: 0 2px 8px rgba(107, 78, 55, 0.2);
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.12) 0%,
    rgba(255, 255, 255, 0) 50%
  );
  opacity: 0;
  transition: opacity 400ms cubic-bezier(0.44, 0, 0.56, 1);
  pointer-events: none;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: white;
  box-shadow: 0 6px 20px rgba(107, 78, 55, 0.3);
  transform: translateY(-2px);
}

.btn-primary:hover::after {
  opacity: 1;
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
  color: white;
  box-shadow: 0 1px 4px rgba(107, 78, 55, 0.2);
  transition-duration: 100ms;
}

.btn-primary:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .btn,
  .btn-primary::after,
  .philosophy-item,
  .workflow-list li,
  .coming-soon-list li,
  .flow-item {
    transition: none;
  }
  .btn-primary:hover,
  .btn-primary:active,
  .btn-secondary:hover,
  .btn-secondary:active,
  .philosophy-item:hover,
  .workflow-list li:hover,
  .coming-soon-list li:hover {
    transform: none;
  }
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border-primary);
}

.btn-secondary:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--accent-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(107, 78, 55, 0.1);
}

.btn-secondary:active {
  transform: translateY(0) scale(0.98);
  transition-duration: 100ms;
}

.btn-secondary:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 3px;
}

.hero-link {
  text-align: center;
  margin-top: var(--spacing-sm);
}

.hero-link a {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ========================================
   11. LINKS
   ======================================== */

a {
  color: var(--accent-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color var(--transition-fast);
}

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

/* ========================================
   12. SCREENSHOT SECTION
   ======================================== */

.screenshot-section {
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.screenshot-section img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-screenshot);
  transition: box-shadow var(--transition-slow);
}

.screenshot-section img:hover {
  box-shadow: 0 20px 60px rgba(43, 43, 43, 0.15), 0 8px 20px rgba(107, 78, 55, 0.1);
}

@media (prefers-reduced-motion: reduce) {
  .screenshot-section img {
    transition: none;
  }
}

/* Video embed container - responsive 16:9 aspect ratio */
.video-container {
  position: relative;
  width: calc(100% + 2 * var(--spacing-lg));
  margin-left: calc(-1 * var(--spacing-lg));
  margin-right: calc(-1 * var(--spacing-lg));
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-screenshot);
  background: var(--bg-secondary);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

@media (min-width: 1200px) {
  .video-container {
    width: calc(100% + 200px);
    margin-left: -100px;
    margin-right: -100px;
  }
}

.screenshot-caption {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-top: var(--spacing-lg);
  font-style: italic;
  letter-spacing: var(--letter-spacing-wide);
}

/* ========================================
   12.5 CHANGELOG TIMELINE DESIGN
   ======================================== */

/* ========================================
   CHANGELOG ACCORDION - Glassmorphism Style
   ======================================== */

.changelog-accordion {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  max-width: 800px;
  margin: 0 auto;
}

/* Accordion Item (details element) */
.accordion-item {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.accordion-item:hover {
  border-color: var(--border-primary);
  box-shadow: var(--shadow-md);
}

.accordion-item[open] {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* Latest version - accent styling */
.accordion-item.latest {
  border-color: var(--accent-primary);
  border-width: 2px;
}

.accordion-item.latest[open] {
  box-shadow: 0 8px 32px rgba(107, 78, 55, 0.15);
}

/* Accordion Header (summary element) */
.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background 0.2s ease;
}

.accordion-header::-webkit-details-marker {
  display: none;
}

.accordion-header:hover {
  background: var(--accent-light);
}

/* Title container */
.accordion-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex: 1;
  min-width: 0;
}

/* Toggle icon (+ / -) */
.accordion-icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--bg-secondary);
  transition: all 0.3s ease;
}

.accordion-icon::before,
.accordion-icon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--accent-primary);
  border-radius: 1px;
  transition: transform 0.3s ease;
}

.accordion-icon::before {
  width: 10px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.accordion-icon::after {
  width: 2px;
  height: 10px;
  transform: translate(-50%, -50%);
}

.accordion-item[open] .accordion-icon {
  background: var(--accent-primary);
  transform: rotate(180deg);
}

.accordion-item[open] .accordion-icon::before,
.accordion-item[open] .accordion-icon::after {
  background: white;
}

.accordion-item[open] .accordion-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

/* Version number */
.accordion-version {
  font-family: var(--font-serif);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.accordion-version.accordion-icon-svg {
  display: flex;
  align-items: center;
}

.accordion-version.accordion-icon-svg svg {
  vertical-align: middle;
}

/* Highlight text */
.accordion-highlight {
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* FAQ category header */
.faq-category-header {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  padding: var(--spacing-md) 0 var(--spacing-xs) 0;
  margin-top: var(--spacing-md);
}

.faq-category-header:first-child {
  margin-top: 0;
}

/* Status badges */
.accordion-status {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  flex-shrink: 0;
}

.accordion-status.review,
.accordion-status.under-review {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.2), rgba(251, 191, 36, 0.1));
  color: #B45309;
  border: 1px solid rgba(251, 191, 36, 0.3);
}

.accordion-status.released {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(16, 185, 129, 0.05));
  color: #047857;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

/* Accordion Content */
.accordion-content {
  padding: var(--spacing-xs) var(--spacing-lg) var(--spacing-lg);
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Release theme description */
.changelog-theme {
  font-family: var(--font-serif);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  border-left: 3px solid var(--accent-primary);
  background: var(--accent-light);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.wax-seal-accent {
  width: 36px;
  height: 36px;
  vertical-align: middle;
  opacity: 0.7;
  margin-left: 0.4em;
}

/* Feature groups */
.changelog-group {
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
}

.changelog-group:last-child {
  margin-bottom: 0;
}

.changelog-group-title {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  margin-bottom: var(--spacing-xs);
  padding-bottom: var(--spacing-xs);
  border-bottom: 1px solid var(--border-subtle);
}

/* Feature list */
.changelog-features {
  list-style: none;
  padding: 0;
  margin: 0;
}

.accordion-content > .changelog-features {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
}

.changelog-features li {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
  padding: 6px 0;
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.15s ease;
}

.changelog-features li:last-child {
  border-bottom: none;
}

.changelog-features li:hover {
  padding-left: var(--spacing-xs);
  background: var(--accent-light);
  margin: 0 calc(-1 * var(--spacing-xs));
  padding-right: var(--spacing-xs);
  border-radius: var(--radius-sm);
}

.changelog-features strong {
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
}

@media (min-width: 641px) {
  .changelog-features strong {
    white-space: nowrap;
  }
}

.changelog-features span {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.4;
}

.changelog-features code {
  font-size: 0.8em;
  background: rgba(107, 78, 55, 0.1);
  padding: 1px 5px;
  border-radius: 3px;
  color: var(--accent-primary);
}

/* Responsive */
@media (max-width: 640px) {
  .accordion-header {
    padding: var(--spacing-sm) var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-xs);
  }

  .accordion-title {
    flex-wrap: wrap;
  }

  /*
   * Changelog: [+icon] [v2.1.0] [highlight] [status]
   *   → version ~ highlight gets width:100% to force line break below version.
   *
   * FAQ / Features: [+icon] [highlight]  (no version)
   *   → icon + highlight stays inline. white-space:normal lets text soft-wrap
   *     within the element, keeping min-content width tiny so flex won't
   *     push it to a new row.
   */

  /* Changelog: highlight drops below version */
  .accordion-version ~ .accordion-highlight {
    width: 100%;
    order: 3;
    padding-left: 28px;
    margin-top: 4px;
  }

  /* FAQ / Features: icon + highlight on same row, text wraps naturally */
  .accordion-icon + .accordion-highlight {
    white-space: normal;
    overflow: visible;
    text-overflow: unset;
  }

  .accordion-status {
    font-size: 0.6rem;
    padding: 3px 8px;
  }

  .accordion-content {
    padding: var(--spacing-xs) var(--spacing-md) var(--spacing-sm);
  }

  .changelog-group {
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .changelog-features li {
    flex-direction: column;
    gap: 2px;
  }
}

/* ========================================
   12.6 LEGACY COMING SOON SECTION (deprecated)
   ======================================== */

.coming-soon-section {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  margin: 0 calc(-1 * var(--spacing-lg));
  margin-bottom: var(--spacing-xl);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
}

.coming-soon-section h2 {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.coming-soon-status {
  font-size: var(--font-size-sm);
  color: var(--accent-primary);
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
  display: inline-block;
  padding: 2px 12px;
  background: var(--accent-light);
  border-radius: var(--radius-sm);
}

.coming-soon-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  max-width: 600px;
  margin: 0 auto;
  text-align: left;
}

.coming-soon-list li {
  padding: var(--spacing-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all 300ms cubic-bezier(0.44, 0, 0.56, 1);
  cursor: default;
}

.coming-soon-list li:hover {
  border-color: var(--border-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.coming-soon-list strong {
  display: block;
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.coming-soon-list span {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  line-height: 1.4;
}

@media (max-width: 640px) {
  .coming-soon-list {
    grid-template-columns: 1fr;
  }
}

/* ----------------------------------------
   12.6b WORKFLOW SECTION (Homepage)
   ---------------------------------------- */
.workflow-section {
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.workflow-section h2 {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.workflow-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  max-width: 640px;
  margin: 0 auto;
  text-align: left;
}

.workflow-list li {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all 300ms cubic-bezier(0.44, 0, 0.56, 1);
  cursor: default;
}

.workflow-list li:hover {
  border-color: var(--border-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.workflow-list strong {
  display: block;
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.workflow-list .workflow-for {
  display: block;
  font-size: 0.7rem;
  color: var(--accent-primary);
  font-weight: 500;
  margin-bottom: 4px;
}

.workflow-list span:not(.workflow-for) {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  line-height: 1.4;
}

@media (max-width: 640px) {
  .workflow-list {
    grid-template-columns: 1fr;
  }
}

/* ----------------------------------------
   12.6c VIDEO CONTEXT
   ---------------------------------------- */
.video-context {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--spacing-sm);
}

/* ========================================
   12.7 FAQ PREVIEW SECTION (Homepage)
   ======================================== */

.faq-preview-section {
  text-align: center;
  padding: var(--spacing-2xl) 0;
  margin-bottom: var(--spacing-xl);
}

.faq-preview-section h2 {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.faq-preview-section .changelog-accordion {
  max-width: 600px;
  margin: 0 auto;
  text-align: left;
}

.faq-more-link {
  margin-top: var(--spacing-md);
  font-size: var(--font-size-sm);
}

.faq-more-link a {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 500;
}

.faq-more-link a:hover {
  text-decoration: underline;
}

/* ========================================
   13. TAB NAVIGATION (Features Page)
   ======================================== */

.tab-container {
  margin-bottom: var(--spacing-lg);
  scroll-margin-top: 80px; /* Header-nav height + padding */
}

/* Hide radio inputs */
.tab-container input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

/* Tab navigation bar - compact horizontal scroll on mobile */
.tab-nav {
  display: flex;
  flex-wrap: nowrap;
  gap: var(--spacing-xs);
  justify-content: center;
  margin-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: var(--spacing-xs);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tab-nav::-webkit-scrollbar {
  display: none;
}

.tab-nav label {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  border-bottom-width: 2px;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.tab-nav label:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

/* Active tab style - 8 tabs */
#tab-modes:checked ~ .tab-nav label[for="tab-modes"],
#tab-markdown:checked ~ .tab-nav label[for="tab-markdown"],
#tab-view:checked ~ .tab-nav label[for="tab-view"],
#tab-notes:checked ~ .tab-nav label[for="tab-notes"],
#tab-storage:checked ~ .tab-nav label[for="tab-storage"],
#tab-git:checked ~ .tab-nav label[for="tab-git"],
#tab-dual:checked ~ .tab-nav label[for="tab-dual"],
#tab-keys:checked ~ .tab-nav label[for="tab-keys"] {
  color: var(--accent-primary);
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-bottom-color: var(--accent-primary);
  border-bottom-width: 2px;
  box-shadow: var(--shadow-sm);
}

/* Tab panels - hidden by default */
.tab-panel {
  display: none;
}

/* Show active panel - 8 tabs */
#tab-modes:checked ~ .tab-content .tab-panel-modes,
#tab-markdown:checked ~ .tab-content .tab-panel-markdown,
#tab-view:checked ~ .tab-content .tab-panel-view,
#tab-notes:checked ~ .tab-content .tab-panel-notes,
#tab-storage:checked ~ .tab-content .tab-panel-storage,
#tab-git:checked ~ .tab-content .tab-panel-git,
#tab-dual:checked ~ .tab-content .tab-panel-dual,
#tab-keys:checked ~ .tab-content .tab-panel-keys {
  display: block;
}

/* Tab content area - compact height */
.tab-content {
  min-height: 280px;
}

/* Tab panel sections - compact */
.tab-panel section {
  margin-bottom: var(--spacing-md);
}

.tab-panel section:last-child {
  margin-bottom: 0;
}

/* Compact philosophy list in tabs */
.tab-panel .philosophy-list {
  gap: var(--spacing-sm);
}

.tab-panel .philosophy-item h3 {
  font-size: var(--font-size-base);
  margin-bottom: 0.25rem;
}

.tab-panel .philosophy-item p {
  font-size: var(--font-size-sm);
  margin: 0;
}

.tab-panel h2 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

.tab-panel > section > p {
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
}

/* Keyboard shortcuts table */
.shortcuts-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.shortcuts-table th,
.shortcuts-table td {
  padding: var(--spacing-xs) var(--spacing-sm);
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

.shortcuts-table th {
  font-family: var(--font-serif);
  font-weight: 500;
  color: var(--text-primary);
}

.shortcuts-table td {
  color: var(--text-secondary);
}

.shortcuts-table kbd {
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-primary);
}

/* Tab panel animation */
.tab-panel {
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .tab-panel {
    animation: none;
  }
}

/* Responsive: Horizontal scroll with hint on mobile */
@media (max-width: 768px) {
  .tab-nav-wrapper {
    position: relative;
  }

  .tab-nav-wrapper::after {
    content: "";
    position: absolute;
    right: 0;
    top: 0;
    bottom: var(--spacing-xs);
    width: 48px;
    background: linear-gradient(to right, transparent, var(--bg-primary));
    pointer-events: none;
  }
}

@media (max-width: 640px) {
  .tab-nav {
    justify-content: flex-start;
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
  }

  .tab-nav label {
    padding: var(--spacing-xs) var(--spacing-xs);
    font-size: 0.8rem;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
}

/* ========================================
   13.5. FAQ ACCORDION
   ======================================== */

.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  max-width: 700px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--border-primary);
}

.faq-item[open] {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-card);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

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

.faq-item summary::after {
  content: "+";
  font-size: var(--font-size-xl);
  font-weight: 300;
  color: var(--text-muted);
  transition: transform var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
  margin-left: var(--spacing-sm);
}

.faq-item[open] summary::after {
  content: "−";
  color: var(--accent-primary);
}

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

.faq-item summary:hover::after {
  color: var(--accent-primary);
}

.faq-answer {
  padding: 0 var(--spacing-md) var(--spacing-md);
  border-top: 1px solid var(--border-subtle);
  margin-top: 0;
  animation: faqFadeIn 0.2s ease-out;
}

@keyframes faqFadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .faq-answer {
    animation: none;
  }
}

.faq-answer p:first-child {
  margin-top: var(--spacing-sm);
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

.faq-answer ul,
.faq-answer ol {
  margin-top: var(--spacing-xs);
  padding-left: var(--spacing-lg);
  color: var(--text-secondary);
}

.faq-answer li {
  margin-bottom: var(--spacing-xs);
  line-height: var(--line-height-relaxed);
}

.faq-answer code {
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 0.9em;
  background: var(--bg-secondary);
  padding: 0.1em 0.4em;
  border-radius: var(--radius-sm);
}

.faq-answer em {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.faq-answer strong {
  color: var(--text-primary);
}

/* FAQ category headers */
.faq-category {
  font-family: var(--font-serif);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-xs);
  border-bottom: 1px solid var(--border-subtle);
}

.faq-category:first-child {
  margin-top: 0;
}

@media (max-width: 640px) {
  .faq-item summary {
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
    min-height: 44px;
  }

  .faq-answer {
    padding: 0 var(--spacing-sm) var(--spacing-sm);
  }

  .faq-answer ul,
  .faq-answer ol {
    padding-left: var(--spacing-md);
  }
}

/* ========================================
   13.6 TEMPLATE GALLERY
   ======================================== */

/* Template Search */
.template-search-input {
  display: block;
  width: 100%;
  max-width: 400px;
  margin: 0 auto var(--spacing-md);
  padding: 10px 16px;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.template-search-input::placeholder {
  color: var(--text-muted);
}

.template-search-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(107, 78, 55, 0.1);
}

/* Filter Tabs */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  justify-content: center;
  margin-bottom: var(--spacing-xl);
}

.filter-btn {
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: 8px 20px;
  min-height: 44px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-accent);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.filter-btn.active {
  background: var(--text-primary);
  color: #fff;
  border-color: var(--text-primary);
}

.filter-btn:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.template-card:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Template Grid */
.template-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  max-width: 960px;
  margin: 0 auto var(--spacing-xl);
}

@media (min-width: 640px) {
  .template-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .template-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Template Card */
.template-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

/* Category color borders */
.template-card[data-category="ai"]           { border-left-color: #4338CA; }
.template-card[data-category="productivity"] { border-left-color: #047857; }
.template-card[data-category="journaling"]   { border-left-color: #0F766E; }
.template-card[data-category="dev"]          { border-left-color: #B45309; }
.template-card[data-category="content"]      { border-left-color: #BE185D; }
.template-card[data-category="thinking"]     { border-left-color: var(--accent-primary); }

.template-card:hover {
  border-color: var(--border-primary);
  box-shadow: var(--shadow-md);
}

.template-card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* Category Badges */
.category-badge {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-ai {
  background: rgba(99, 102, 241, 0.12);
  color: #4338CA;
}

.badge-productivity {
  background: rgba(16, 185, 129, 0.12);
  color: #047857;
}

.badge-journaling {
  background: rgba(20, 184, 166, 0.12);
  color: #0F766E;
}

.badge-dev {
  background: rgba(245, 158, 11, 0.12);
  color: #B45309;
}

.badge-content {
  background: rgba(236, 72, 153, 0.12);
  color: #BE185D;
}

.badge-thinking {
  background: rgba(107, 78, 55, 0.12);
  color: var(--accent-primary);
}

/* Card Title & Description */
.template-card-title {
  font-family: var(--font-serif);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  line-height: var(--line-height-tight);
}

.template-card-desc {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
  flex: 1;
}

/* Card Actions */
.template-card-actions {
  display: flex;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xs);
}

.copy-btn {
  flex: 1;
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: 8px 12px;
  min-height: 44px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--accent-primary);
  color: #fff;
  cursor: pointer;
  transition: background var(--transition-fast);
}

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

.copy-btn.copied {
  background: #047857;
}

.open-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  min-height: 44px;
  font-size: var(--font-size-base);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  text-decoration: none;
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.open-btn:hover {
  background: var(--bg-accent);
  color: var(--text-primary);
  border-color: var(--border-primary);
  text-decoration: none;
}

/* ========================================
   13.7 TEMPLATE VIEWER
   ======================================== */

/* Breadcrumb navigation */
.template-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4em;
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.template-breadcrumb .breadcrumb-current {
  color: var(--text-primary);
  font-weight: 500;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.template-breadcrumb a {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 500;
}

.template-breadcrumb a:hover {
  text-decoration: underline;
}

.template-breadcrumb .breadcrumb-sep {
  color: var(--border-primary);
  user-select: none;
}

/* View toggle: Preview / Raw */
.template-view-toggle {
  position: relative;
  display: flex;
  flex-shrink: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  padding: 4px;
}

.template-view-toggle::before {
  content: '';
  position: absolute;
  top: 4px;
  left: 4px;
  width: 80px;
  height: calc(100% - 8px);
  background: var(--bg-card);
  border-radius: 999px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 0;
}

.template-view-toggle.raw-active::before {
  transform: translateX(100%);
}

.view-toggle-btn {
  position: relative;
  z-index: 1;
  width: 80px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 0;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s ease;
  text-align: center;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.view-toggle-btn:hover {
  color: var(--text-secondary);
}

.view-toggle-btn.active {
  color: var(--text-primary);
}

.view-toggle-btn:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Sticky toolbar — top is set dynamically via JS to clear header-nav */
.template-viewer-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 24px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.template-viewer-bar.scrolled {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  border-color: var(--border-primary);
}

.template-viewer-back {
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--accent-primary);
  text-decoration: none;
  white-space: nowrap;
}

.template-viewer-back:hover {
  text-decoration: underline;
}

.template-viewer-title {
  font-family: var(--font-serif);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

/* Rendered Markdown content */
.template-viewer-content {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
  color: var(--text-primary);
  overflow-x: auto;
  scroll-margin-top: 130px;
}

.template-viewer-content h1 {
  font-family: var(--font-serif);
  font-size: var(--font-size-3xl);
  font-weight: 600;
  margin: 0 0 var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--border-subtle);
}

.template-viewer-content h2 {
  font-family: var(--font-serif);
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin: var(--spacing-xl) 0 var(--spacing-sm);
  padding-bottom: var(--spacing-xs);
  border-bottom: 1px solid var(--border-subtle);
}

.template-viewer-content h3 {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin: var(--spacing-lg) 0 var(--spacing-xs);
}

.template-viewer-content p {
  margin: 0 0 var(--spacing-sm);
  color: var(--text-secondary);
}

.template-viewer-content ul,
.template-viewer-content ol {
  padding-left: var(--spacing-lg);
  margin: 0 0 var(--spacing-sm);
  color: var(--text-secondary);
}

.template-viewer-content li {
  margin-bottom: var(--spacing-xs);
  line-height: var(--line-height-relaxed);
}

/* Task list */
.template-viewer-content .task-list {
  list-style: none;
  padding-left: 0;
}

.template-viewer-content .task-list-item {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
}

.template-viewer-content .task-list-item input[type="checkbox"] {
  margin: 0;
  flex-shrink: 0;
}

/* Tables */
.template-viewer-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 var(--spacing-md);
  font-size: var(--font-size-sm);
}

.template-viewer-content th,
.template-viewer-content td {
  padding: var(--spacing-xs) var(--spacing-sm);
  text-align: left;
  border: 1px solid var(--border-subtle);
}

.template-viewer-content th {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-primary);
}

.template-viewer-content td {
  color: var(--text-secondary);
}

/* Blockquotes */
.template-viewer-content blockquote {
  margin: 0 0 var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-left: 4px solid var(--border-primary);
  background: var(--bg-secondary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
}

.template-viewer-content blockquote p:last-child {
  margin-bottom: 0;
}

/* Callouts */
.template-viewer-content .callout {
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
}

.template-viewer-content .callout-label {
  text-transform: uppercase;
  font-size: var(--font-size-sm);
  letter-spacing: 0.04em;
}

.template-viewer-content .callout-tip {
  border-left-color: #047857;
  background: rgba(16, 185, 129, 0.08);
}

.template-viewer-content .callout-note {
  border-left-color: #1D4ED8;
  background: rgba(59, 130, 246, 0.08);
}

.template-viewer-content .callout-warning {
  border-left-color: #B45309;
  background: rgba(245, 158, 11, 0.08);
}

.template-viewer-content .callout-important {
  border-left-color: #7C3AED;
  background: rgba(139, 92, 246, 0.08);
}

.template-viewer-content .callout-caution {
  border-left-color: #DC2626;
  background: rgba(239, 68, 68, 0.08);
}

/* Code blocks */
.template-viewer-content pre {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  overflow-x: auto;
  margin: 0 0 var(--spacing-md);
  font-size: var(--font-size-sm);
  line-height: 1.5;
}

.template-viewer-content pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
}

.template-viewer-content code {
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 0.9em;
  background: var(--bg-secondary);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
}

/* Mermaid diagrams */
.template-viewer-content .mermaid {
  text-align: center;
  margin: var(--spacing-md) 0;
  padding: var(--spacing-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

/* Images */
.template-viewer-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

/* Horizontal rule */
.template-viewer-content hr {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: var(--spacing-lg) 0;
}

/* Action bar */
.template-viewer-actions {
  display: flex;
  justify-content: center;
  padding: var(--spacing-md) 0;
}

.template-viewer-actions .copy-btn {
  min-width: 200px;
  padding: 10px 24px;
  font-size: var(--font-size-base);
}

/* Error state */
.template-viewer-error {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  color: var(--text-secondary);
}

.template-viewer-error p {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
}

.template-viewer-error a {
  color: var(--accent-primary);
  font-weight: 500;
  text-decoration: none;
}

.template-viewer-error a:hover {
  text-decoration: underline;
}

/* Loading state */
.template-viewer-loading {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* Swipe navigation */
.template-viewer-nav {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 8px;
}

.template-nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  cursor: pointer;
  transition: all 0.15s ease;
  padding: 0;
  line-height: 1;
  -webkit-user-select: none;
  user-select: none;
}

.template-nav-btn:hover:not(:disabled) {
  background: var(--bg-subtle);
  color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.template-nav-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.template-nav-counter {
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  min-width: 48px;
  text-align: center;
  white-space: nowrap;
}

.template-nav-input {
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  width: 48px;
  height: 32px;
  text-align: center;
  padding: 0 4px;
  -moz-appearance: textfield;
  appearance: textfield;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.template-nav-input::-webkit-inner-spin-button,
.template-nav-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.template-nav-input:hover {
  border-color: var(--border-primary);
}

.template-nav-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px rgba(107, 78, 55, 0.15);
  background: var(--bg-card);
}

.template-nav-total {
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  white-space: nowrap;
  margin-left: 2px;
}

/* Bottom navigation bar */
.template-viewer-bar-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-sm);
}

/* Slide transition */
.template-viewer-content {
  position: relative;
  touch-action: pan-y pinch-zoom;
  will-change: transform, opacity;
}

.template-viewer-content.swiping {
  transition: none;
  cursor: grabbing;
}

.template-viewer-content.snap-back {
  transition: transform 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              opacity 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.template-viewer-content.slide-out-left {
  animation: slideOutLeft 0.2s ease-in forwards;
}

.template-viewer-content.slide-out-right {
  animation: slideOutRight 0.2s ease-in forwards;
}

.template-viewer-content.slide-in-left {
  animation: slideInLeft 0.25s ease-out forwards;
}

.template-viewer-content.slide-in-right {
  animation: slideInRight 0.25s ease-out forwards;
}

@keyframes slideOutLeft {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(-60px); }
}

@keyframes slideOutRight {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(60px); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(60px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(-60px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Desktop edge hover arrows */
@keyframes edge-arrow-hint {
  0%   { opacity: 0; }
  30%  { opacity: 0.5; }
  60%  { opacity: 0.5; }
  100% { opacity: 0.15; }
}

.template-edge-arrow {
  position: fixed;
  top: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  z-index: 15;
  cursor: pointer;
  opacity: 0.15;
  transition: opacity 0.15s ease;
  animation: edge-arrow-hint 1.5s ease-out 0.5s both;
}

/* Raw markdown view */
.template-raw-content {
  white-space: pre-wrap;
  word-wrap: break-word;
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 13px;
  line-height: 1.6;
  padding: 0;
  margin: 0;
  background: transparent;
  border: none;
}

.template-edge-arrow:hover {
  opacity: 1;
}

.template-edge-arrow.edge-prev {
  left: 0;
  width: calc((100vw - 800px) / 2);
  min-width: 120px;
  justify-content: flex-end;
  padding-right: 12px;
}

.template-edge-arrow.edge-next {
  right: 0;
  width: calc((100vw - 800px) / 2);
  min-width: 120px;
  justify-content: flex-start;
  padding-left: 12px;
}

.template-edge-arrow .edge-arrow-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 18px;
  box-shadow: var(--shadow-md);
  transition: all 0.15s ease;
}

.template-edge-arrow:hover .edge-arrow-icon {
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
  transform: scale(1.1);
}

.template-edge-arrow[aria-disabled="true"] {
  pointer-events: none;
  opacity: 0 !important;
}

@media (max-width: 640px) {
  .template-edge-arrow {
    display: none;
  }
}

/* Swipe edge hints */
.template-swipe-hint {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 16px;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 10;
  box-shadow: var(--shadow-sm);
}

.template-swipe-hint.hint-prev {
  left: 6px;
}

.template-swipe-hint.hint-next {
  right: 6px;
}

.template-swipe-hint.visible {
  opacity: 0.7;
}

.template-swipe-hint.active {
  opacity: 1;
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
}

@media (prefers-reduced-motion: reduce) {
  .template-viewer-content.slide-out-left,
  .template-viewer-content.slide-out-right,
  .template-viewer-content.slide-in-left,
  .template-viewer-content.slide-in-right {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .template-viewer-content.snap-back {
    transition: none;
  }

  .template-swipe-hint {
    display: none;
  }

  .template-edge-arrow {
    animation: none;
    opacity: 0.15;
  }
}

/* Responsive — template viewer mobile */
@media (max-width: 640px) {
  .template-viewer-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    padding: 8px 16px;
    border-radius: 0;
    margin-left: calc(-1 * var(--spacing-md));
    margin-right: calc(-1 * var(--spacing-md));
    border-left: none;
    border-right: none;
  }

  /* Row 1: breadcrumb full width */
  .template-breadcrumb {
    width: 100%;
    padding-bottom: 8px;
    margin-bottom: 8px;
    font-size: var(--font-size-xs);
    border-bottom: 1px solid var(--border-subtle);
  }

  /* Row 2: toggle + nav inline */
  .template-view-toggle {
    padding: 4px;
  }

  .view-toggle-btn {
    padding: 4px 12px;
    font-size: var(--font-size-xs);
  }

  .template-viewer-nav {
    margin-left: auto;
  }

  .template-nav-btn {
    width: 30px;
    height: 30px;
    font-size: var(--font-size-sm);
  }

  .template-nav-input {
    width: 34px;
    height: 30px;
    font-size: var(--font-size-xs);
  }

  .template-nav-total {
    font-size: var(--font-size-xs);
  }

  /* Content area */
  .template-viewer-content {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
  }

  .template-viewer-content h1 {
    font-size: var(--font-size-2xl);
  }

  .template-viewer-content h2 {
    font-size: var(--font-size-xl);
  }

  .template-viewer-content h3 {
    font-size: var(--font-size-lg);
  }

  .template-nav-counter {
    font-size: var(--font-size-xs);
    min-width: 36px;
  }

  /* Bottom nav */
  .template-viewer-bar-bottom {
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .template-viewer-bar-bottom .template-nav-btn {
    width: 40px;
    height: 40px;
  }

  .template-viewer-bar-bottom .template-nav-input {
    width: 40px;
    height: 40px;
  }
}

/* ========================================
   14. CTA SECTION
   ======================================== */

.cta-section {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  margin: var(--spacing-xl) calc(-1 * var(--spacing-lg));
  border-radius: var(--radius-lg);
  background: linear-gradient(
    160deg,
    var(--bg-secondary) 0%,
    var(--bg-accent) 100%
  );
  border: 1px solid var(--border-subtle);
}

.cta-section h2 {
  font-family: var(--font-serif);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}

.cta-section p {
  max-width: 440px;
  margin: 0 auto var(--spacing-lg);
  font-size: var(--font-size-base);
  color: var(--text-secondary);
}

/* ========================================
   14. FOOTER
   ======================================== */

footer {
  text-align: center;
  padding: var(--spacing-2xl) 0 var(--spacing-xl);
  margin-top: var(--spacing-2xl);
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
  opacity: 0.6;
  transition: opacity var(--transition-base);
}

.footer-brand:hover {
  opacity: 0.8;
}

.footer-brand img {
  width: 24px;
  height: 24px;
}

.footer-brand span {
  font-family: var(--font-serif);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

footer p {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

footer a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

footer a:hover {
  color: var(--accent-primary);
  text-decoration: underline;
}

/* Footer navigation */
.footer-nav {
  margin-bottom: var(--spacing-md);
}

.footer-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
  align-items: center;
}

.footer-nav li {
  margin: 0;
}

.footer-nav a {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--accent-primary);
  background-color: var(--accent-light);
}

.footer-nav .lang-switcher {
  margin-left: var(--spacing-xs);
  padding-left: var(--spacing-xs);
  border-left: 1px solid var(--border-subtle);
}

.footer-nav .lang-switcher a {
  font-weight: 500;
  color: var(--text-muted);
}

.footer-nav .lang-switcher a:hover {
  color: var(--accent-primary);
}

@media (max-width: 768px) {
  .footer-nav ul {
    gap: var(--spacing-xs);
  }

  .footer-nav a {
    font-size: 0.75rem;
    padding: 0.5rem 0.4rem;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
}

/* ========================================
   15. RESPONSIVE - TABLET
   ======================================== */

@media (max-width: 768px) {
  :root {
    --spacing-section: 4rem;
    --spacing-hero: 5rem;
    --spacing-xl: 2.5rem;
    --spacing-2xl: 3rem;
  }

  .container {
    padding: var(--spacing-md);
  }

  /* Full-bleed sections: match negative margins to container padding */
  .flow-section,
  .coming-soon-section {
    margin-left: calc(-1 * var(--spacing-md));
    margin-right: calc(-1 * var(--spacing-md));
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }

  .cta-section {
    margin-left: calc(-1 * var(--spacing-md));
    margin-right: calc(-1 * var(--spacing-md));
  }

  .video-container {
    width: calc(100% + 2 * var(--spacing-md));
    margin-left: calc(-1 * var(--spacing-md));
    margin-right: calc(-1 * var(--spacing-md));
  }

  header {
    padding: var(--spacing-md) 0 var(--spacing-lg);
  }

  .hero-tagline {
    font-size: var(--font-size-4xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  .buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
  }
}

/* ========================================
   16. RESPONSIVE - MOBILE
   ======================================== */

@media (max-width: 480px) {
  :root {
    --spacing-section: 2.5rem;
    --spacing-hero: 4rem;
    --spacing-xl: 2.25rem;
    --spacing-2xl: 2.5rem;
  }

  .container {
    padding: var(--spacing-sm);
  }

  /* Full-bleed sections: match negative margins to container padding */
  .flow-section,
  .coming-soon-section {
    margin-left: calc(-1 * var(--spacing-sm));
    margin-right: calc(-1 * var(--spacing-sm));
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
  }

  .cta-section {
    margin-left: calc(-1 * var(--spacing-sm));
    margin-right: calc(-1 * var(--spacing-sm));
  }

  .video-container {
    width: calc(100% + 2 * var(--spacing-sm));
    margin-left: calc(-1 * var(--spacing-sm));
    margin-right: calc(-1 * var(--spacing-sm));
  }

  header h1 {
    font-size: var(--font-size-2xl);
  }

  .hero-tagline {
    font-size: var(--font-size-3xl);
  }

  h2 {
    font-size: var(--font-size-xl);
  }

  .philosophy-list {
    gap: var(--spacing-sm);
  }

  footer p {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

/* ========================================
   17. RESPONSIVE - LARGE SCREENS (1600px+)
   ======================================== */

@media (min-width: 1600px) {
  .container {
    max-width: 1000px;
  }

  .hero-tagline {
    font-size: 5rem;
  }

  .hero-subtitle {
    font-size: var(--font-size-xl);
    max-width: 600px;
  }

  header h1 {
    font-size: var(--font-size-4xl);
  }

  .philosophy-list {
    max-width: 600px;
  }

  .flow-section .philosophy-list {
    max-width: 1000px;
  }

  .screenshot-section img {
    max-width: 900px;
  }

  .template-edge-arrow.edge-prev,
  .template-edge-arrow.edge-next {
    width: calc((100vw - 1000px) / 2);
  }
}

/* ========================================
   18. PRINT STYLES
   ======================================== */

@media print {
  body {
    background: white;
    color: black;
  }

  .skip-to-content,
  .buttons {
    display: none;
  }

  a {
    color: black;
    text-decoration: underline;
  }
}

/* ========================================
   19. WELCOME PAGE
   ======================================== */

/* Stagger entrance animation */
@keyframes stagger-in {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.stagger {
  opacity: 0;
  animation: stagger-in 0.5s ease-out forwards;
}
.stagger-1 { animation-delay: 0ms; }
.stagger-2 { animation-delay: 100ms; }
.stagger-3 { animation-delay: 200ms; }
.stagger-4 { animation-delay: 300ms; }
.stagger-5 { animation-delay: 400ms; }
.stagger-6 { animation-delay: 500ms; }
.stagger-7 { animation-delay: 600ms; }
.stagger-8 { animation-delay: 700ms; }

@media (prefers-reduced-motion: reduce) {
  .stagger {
    opacity: 1;
    animation: none;
    transform: none;
  }
}

.welcome-hero {
  text-align: center;
  padding: var(--spacing-xl) 0 var(--spacing-md);
}
.welcome-hero h2 {
  font-family: var(--font-serif);
  font-size: var(--font-size-3xl);
  font-weight: 500;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-xs);
  line-height: var(--line-height-tight);
}
.welcome-hero p {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  line-height: var(--line-height-normal);
  margin: 0;
}

.welcome-body {
  max-width: 560px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* First action — amber card */
.first-action {
  background: #FFF8E1;
  border: 1px solid #E8C547;
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}
.first-action-label {
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: #92400E;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  margin: 0 0 var(--spacing-xs);
  display: flex;
  align-items: center;
  gap: 6px;
}
.first-action-label svg {
  flex-shrink: 0;
}
.first-action h3 {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 500;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-xs);
}
.first-action p {
  color: var(--text-secondary);
  line-height: var(--line-height-normal);
  margin: 0 0 var(--spacing-xs);
}
.first-action .screenshot {
  margin: var(--spacing-sm) 0;
  text-align: center;
}
.first-action .screenshot img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  cursor: zoom-in;
}
.first-action .screenshot img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-md);
}
.first-action .screenshot-fallback {
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  border: 1px dashed var(--border-primary);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}
.first-action .subtle-note {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  margin: 0;
}

/* CTA */
.welcome-cta {
  text-align: center;
  padding: var(--spacing-lg) var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  background: linear-gradient(135deg, var(--bg-card), rgba(107, 78, 55, 0.03));
  border: 2px solid var(--accent-primary);
  border-radius: var(--radius-md);
}
.welcome-cta kbd {
  font-family: var(--font-sans);
  font-size: var(--font-size-lg);
  background: var(--bg-secondary);
  padding: 4px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-primary);
  box-shadow: 0 2px 0 var(--border-primary);
  font-weight: 600;
}
.welcome-cta .cta-instruction {
  font-size: var(--font-size-xl);
  color: var(--text-primary);
  font-family: var(--font-serif);
  font-weight: 500;
  margin: 0 0 var(--spacing-xs);
}
.welcome-cta .cta-success {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  margin: 0;
}
.cta-success .success-marker {
  color: #16A34A;
  font-weight: 600;
}

/* 3 ways section */
.ways-section {
  margin-bottom: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-subtle);
}
.ways-label {
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  margin: 0 0 var(--spacing-sm);
}
.way-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-xs);
  display: flex;
  gap: var(--spacing-sm);
  align-items: flex-start;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.way-card:hover {
  border-color: var(--border-primary);
  box-shadow: var(--shadow-md);
}
.way-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--accent-primary);
}
.way-content h3 {
  font-family: var(--font-serif);
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: var(--text-primary);
  margin: 0 0 2px;
}
.way-content p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  margin: 0;
}
.way-content kbd {
  font-family: var(--font-sans);
  font-size: 0.8em;
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-primary);
  box-shadow: 0 1px 0 var(--border-primary);
}

/* Expandable details */
.welcome-details {
  margin-bottom: var(--spacing-xs);
}
.welcome-details summary {
  cursor: pointer;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: 500;
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: background var(--transition-fast);
}
.welcome-details summary:hover {
  background: var(--bg-secondary);
}
.welcome-details summary::before {
  content: '\25B8';
  font-size: var(--font-size-sm);
  transition: transform var(--transition-fast);
}
.welcome-details[open] summary::before {
  transform: rotate(90deg);
}
.welcome-details .detail-content {
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  line-height: var(--line-height-normal);
  font-size: var(--font-size-sm);
}
.welcome-details .detail-content ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.welcome-details .detail-content li {
  padding: 4px 0;
}
.welcome-details .detail-content li strong {
  color: var(--text-primary);
}
.icon-yes { color: #16A34A; margin-right: 4px; }
.icon-warn { color: #D97706; margin-right: 4px; }