/* Flexoki Color System */
:root {
  /* Flexoki Color Variables */
  --flexoki-black: #100f0f;
  --flexoki-paper: #fffcf0;
  --flexoki-50: #f2f0e5;
  --flexoki-100: #e6e4d9;
  --flexoki-150: #dad8ce;
  --flexoki-200: #cecdc3;
  --flexoki-300: #b7b5ac;
  --flexoki-400: #9f9d96;
  --flexoki-500: #878580;
  --flexoki-600: #6f6e69;
  --flexoki-700: #575653;
  --flexoki-800: #403e3c;
  --flexoki-850: #343331;
  --flexoki-900: #282726;
  --flexoki-950: #1c1b1a;

  /* Purple accent colors */
  --flexoki-purple-400: #8b7ec8;
  --flexoki-purple-500: #735eb5;
  --flexoki-purple-600: #5e409d;

  /* Nord Color Variables */
  --nord-base-100: oklch(95.127% 0.007 260.731);
  --nord-base-200: oklch(93.299% 0.01 261.788);
  --nord-base-300: oklch(89.925% 0.016 262.749);
  --nord-base-content: oklch(32.437% 0.022 264.182);
  --nord-primary: oklch(59.435% 0.077 254.027);
  --nord-secondary: oklch(69.651% 0.059 248.687);
  --nord-accent: oklch(77.464% 0.062 217.469);
  --nord-neutral: oklch(45.229% 0.035 264.131);

  /* Nord Light Theme (Default) */
  --bg-primary: var(--nord-base-100);
  --bg-secondary: var(--nord-base-200);
  --text-primary: var(--nord-base-content);
  --text-secondary: var(--nord-neutral);
  --text-muted: var(--nord-base-content);
  --accent-primary: var(--nord-primary);
  --accent-secondary: var(--nord-secondary);
  --border: var(--nord-base-300);
  --border-hover: var(--nord-base-200);
  --shadow: rgba(50, 56, 66, 0.1);

  /* Transition timing */
  --transition-duration: 0.3s;
  --transition-easing: ease;
}

/* Flexoki Dark Theme */
[data-theme="dark"] {
  --bg-primary: var(--flexoki-950);
  --bg-secondary: var(--flexoki-900);
  --text-primary: var(--flexoki-paper);
  --text-secondary: var(--flexoki-100);
  --text-muted: var(--flexoki-300);
  --accent-primary: var(--flexoki-purple-400);
  --accent-secondary: var(--flexoki-purple-500);
  --border: var(--flexoki-800);
  --border-hover: var(--flexoki-700);
  --shadow: rgba(0, 0, 0, 0.4);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color var(--transition-duration)
      var(--transition-easing),
    color var(--transition-duration) var(--transition-easing);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  animation: pageLoad 0.6s ease-out;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Theme Toggle */
.theme-toggle {
  position: fixed;
  top: 2rem;
  right: 2rem;
  background: var(--bg-secondary);
  border: 2px solid var(--border);
  border-radius: 50%;
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-duration) var(--transition-easing);
  z-index: 1000;
  font-size: 1.2rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.theme-toggle:hover {
  border-color: var(--accent-primary);
  transform: scale(1.1) rotate(15deg);
  box-shadow: 0 8px 20px var(--shadow);
  background: var(--accent-primary);
  color: white;
}

/* CTA Card */
.cta-card {
  position: relative;
  background: var(--bg-secondary);
  border: 2px solid var(--border);
  border-radius: 16px;
  padding: 2rem 1.5rem 1.5rem;
  overflow: hidden;
  text-align: center;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-duration) var(--transition-easing);
  cursor: pointer;
}

.cta-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px var(--shadow);
}

.cta-card::after {
  content: "";
  position: absolute;
  inset: 0;
  padding: 2px;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  border-radius: inherit;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.cta-card:hover::after {
  opacity: 0.3;
}

/* Beta Ribbon */
.beta-ribbon {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 10;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  color: white;
  padding: 0.4rem 2.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transform: rotate(45deg) translate(25%, -50%);
  transform-origin: center;
  box-shadow: 0 2px 8px var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.2);
  min-width: 130px;
  text-align: center;
}

/* Hero Section */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 2rem 0;
  position: relative;
  background: var(--bg-primary);
  background-image: radial-gradient(
      circle at 20% 80%,
      rgba(95, 106, 157, 0.03) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(111, 126, 166, 0.03) 0%,
      transparent 50%
    );
  transition: background-color var(--transition-duration)
      var(--transition-easing),
    background-image var(--transition-duration) var(--transition-easing);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1024px;
  gap: 4rem;
  align-items: center;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="dark"] .hero-title {
  background: linear-gradient(
    135deg,
    var(--flexoki-purple-400),
    var(--flexoki-purple-500)
  );
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 600px;
  line-height: 1.7;
  font-weight: 400;
}

[data-theme="dark"] .hero-subtitle {
  font-weight: 500;
  color: var(--flexoki-100);
}

.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.btn {
  text-align: center;
  background: var(--accent-primary);
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-duration) var(--transition-easing);
  text-decoration: none;
  gap: 0.5rem;
}

.btn:hover {
  background: var(--accent-secondary);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px var(--shadow);
}

.btn:active {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--shadow);
}

.btn-large {
  padding: 1.25rem 2.5rem;
  font-size: 1.2rem;
}

/* CTA Card Brand Layout */
.cta-brand {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  justify-content: center;
}

.cta-icon {
  width: 144px;
  height: 144px;
  border-radius: 16px;
  box-shadow: 0 8px 16px var(--shadow);
  transition: all 0.4s ease;
  flex-shrink: 0;
}

.cta-icon:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 12px 24px var(--shadow);
}

.cta-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all 0.4s ease;
}

/* CTA Card Pricing Styles */
.pricing {
  padding: 20px 0 4px 0;
}

.price-comparison {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.original-price {
  font-size: 1.25rem;
  color: var(--text-muted);
  text-decoration: line-through;
  position: relative;
}

.current-price {
  font-size: 2rem;
  line-height: 1em;
  font-weight: 700;
  color: var(--accent-primary);
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.urgency-text {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent-primary);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0;
}

[data-theme="dark"] .urgency-text {
  font-weight: 600;
  color: var(--flexoki-purple-400);
}

[data-theme="dark"] .hero {
  background-image: radial-gradient(
      circle at 20% 80%,
      rgba(115, 94, 181, 0.03) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(139, 126, 200, 0.03) 0%,
      transparent 50%
    );
}

[data-theme="dark"] .feature-card::before {
  background: linear-gradient(
    135deg,
    rgba(115, 94, 181, 0.05),
    rgba(139, 126, 200, 0.05)
  );
}

.urgency-icon {
  width: 1rem;
  height: 1rem;
}

.app-icon {
  width: 300px;
  height: 300px;
  border-radius: 60px;
  box-shadow: 0 20px 40px var(--shadow);
  transition: all 0.4s ease;
  animation: float 6s ease-in-out infinite;
}

.app-icon:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 30px 60px var(--shadow);
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: -2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.7;
  cursor: pointer;
  transition: opacity 0.3s ease;
}

.scroll-indicator:hover {
  opacity: 1;
}

.scroll-arrow {
  animation: bounce 2s infinite;
}

.scroll-arrow i {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--text-secondary);
  stroke-width: 2;
}

.scroll-text {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0;
}

@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* Sections */
.features {
  padding: 6rem 0;
  transition: background-color var(--transition-duration)
    var(--transition-easing);
}

/* Writing Interface Showcase */
.writing-showcase {
  padding: 6rem 0;
  background: var(--bg-secondary);
  transition: background-color var(--transition-duration)
    var(--transition-easing);
}

.writing-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.writing-text h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.writing-text p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.writing-features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.writing-feature {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.1rem;
  font-weight: 500;
}

.writing-feature-icon {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--accent-primary);
  stroke-width: 2;
}

.writing-screenshot {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 40px var(--shadow);
  transition: all 0.4s ease;
}

.screenshot-link {
  display: block;
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  transition: opacity 0.4s ease;
  cursor: pointer;
}

.writing-screenshot:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 25px 50px var(--shadow);
}

.writing-image {
  width: 100%;
  height: auto;
}

/* Writing screenshot theme switching */
.writing-screenshot .screenshot-light {
  opacity: 1;
  z-index: 2;
}

.writing-screenshot .screenshot-dark {
  opacity: 0;
  z-index: 1;
}

[data-theme="dark"] .writing-screenshot .screenshot-light {
  opacity: 0;
  z-index: 1;
}

[data-theme="dark"] .writing-screenshot .screenshot-dark {
  opacity: 1;
  z-index: 2;
}

/* Create space for absolutely positioned writing images */
.writing-screenshot::before {
  content: "";
  display: block;
  width: 100%;
  padding-bottom: 60%; /* Maintain aspect ratio */
}

.themes {
  padding: 6rem 0;
}

.download {
  padding: 5rem 0 6rem;
  transition: background-color var(--transition-duration)
    var(--transition-easing);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 4rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
  max-width: 1400px;
  margin: 0 auto;
}

.feature-card {
  background: var(--bg-secondary);
  padding: 2.5rem;
  border-radius: 20px;
  border: 2px solid var(--border);
  transition: all var(--transition-duration) var(--transition-easing);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px var(--shadow);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  height: 100px;
  background: linear-gradient(
    135deg,
    rgba(95, 106, 157, 0.05),
    rgba(111, 126, 166, 0.05)
  );
  border-radius: 50%;
  transform: translate(50%, -50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover::before {
  opacity: 1;
}

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

.feature-icon i {
  width: 3rem;
  height: 3rem;
  stroke-width: 1.5;
  color: var(--accent-primary);
}

.feature-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 0.95rem;
}

/* Themes Carousel */
.themes {
  background: var(--bg-secondary);
  transition: background-color var(--transition-duration)
    var(--transition-easing);
}

.themes-carousel {
  max-width: 800px;
  margin: 0 auto;
}

.carousel-container {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  background: var(--bg-primary);
  border: 2px solid var(--border);
  margin-bottom: 2rem;
}

.carousel-track {
  display: flex;
  transition: transform 0.3s ease;
  width: 300%;
}

.theme-slide {
  min-width: 33.333%;
  width: 33.333%;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.theme-preview {
  padding: 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 200px;
}

.theme-page {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  max-width: 400px;
  width: 100%;
  border: 1px solid #ddd;
}

.theme-chapter {
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
  color: #333;
  text-align: center;
}

.theme-text {
  font-size: 1rem;
  line-height: 1.7;
  color: #444;
  margin: 0;
}

/* Theme Typography */
.hopeless-romantic .theme-chapter {
  font-family: "Crimson Pro", serif;
  font-weight: 600;
}

.hopeless-romantic .theme-text {
  font-family: "Lora", serif;
}

.future-perfect .theme-chapter {
  font-family: "Alegreya Sans", sans-serif;
  font-weight: 600;
}

.future-perfect .theme-text {
  font-family: "Literata", serif;
}

.fine-day .theme-chapter {
  font-family: "Noto Sans", sans-serif;
  font-weight: 600;
}

.fine-day .theme-text {
  font-family: "Libre Baskerville", serif;
}

.theme-info {
  padding: 2rem;
  border-top: 2px solid var(--border);
  text-align: center;
}

.theme-info h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.theme-info p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Carousel Navigation */
.carousel-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

.carousel-btn {
  background: var(--bg-primary);
  border: 2px solid var(--border);
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-primary);
  transition: all var(--transition-duration) var(--transition-easing);
}

.carousel-btn i {
  width: 1.5rem;
  height: 1.5rem;
  stroke-width: 2;
}

.carousel-btn:hover {
  border-color: var(--accent-primary);
  background: var(--accent-primary);
  color: white;
  transform: scale(1.1);
}

.carousel-btn:active {
  transform: scale(0.95);
}

.carousel-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.carousel-dots {
  display: flex;
  gap: 0.5rem;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  background: var(--border);
  cursor: pointer;
  transition: all var(--transition-duration) var(--transition-easing);
  position: relative;
}

.dot:hover {
  background: var(--accent-secondary);
  transform: scale(1.2);
}

.dot.active {
  background: var(--accent-primary);
  transform: scale(1.3);
  box-shadow: 0 0 0 3px rgba(95, 106, 157, 0.2);
}

[data-theme="dark"] .dot.active {
  box-shadow: 0 0 0 3px rgba(115, 94, 181, 0.2);
}

/* Theme Tabs */
.theme-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.theme-tab {
  background: transparent;
  border: 2px solid var(--border);
  padding: 0.75rem 1.5rem;
  border-radius: 25px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-duration) var(--transition-easing);
}

.theme-tab.active,
.theme-tab:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--bg-primary);
}

/* Download Section */
.download {
  text-align: center;
}

.download-pricing {
  max-width: 500px;
  margin: 0 auto 2rem;
}

.price-highlight {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: var(--bg-secondary);
  border-radius: 16px;
  border: 2px solid var(--border);
}

.strike-price {
  font-size: 1.5rem;
  color: var(--text-muted);
  text-decoration: line-through;
  position: relative;
}

.strike-price::after {
  content: "";
  position: absolute;
  top: 50%;
  left: -5px;
  right: -5px;
  height: 3px;
  background: var(--accent-primary);
  transform: rotate(-15deg);
  opacity: 0.8;
}

.beta-price {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 2px 4px var(--shadow);
}

.beta-benefits {
  display: grid;
  gap: 0.75rem;
  margin-top: 2rem;
  text-align: left;
}

.benefit-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background: var(--bg-secondary);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.benefit-item i {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--accent-primary);
  stroke-width: 2;
  flex-shrink: 0;
}

.benefit-item span {
  font-weight: 500;
  color: var(--text-primary);
}

.platform-info {
  margin: 1rem 0;
  text-align: center;
}

.platform-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin: 0;
  font-weight: 500;
}

.secondary-download {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-duration) var(--transition-easing);
}

.secondary-download:hover {
  color: var(--accent-secondary);
  text-decoration: underline;
}

.system-requirements {
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.system-requirements p {
  margin: 0.25rem 0;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  padding: 2rem 0;
  text-align: center;
  border-top: 2px solid var(--border);
  transition: background-color var(--transition-duration)
      var(--transition-easing),
    border-color var(--transition-duration) var(--transition-easing);
}

.footer p {
  color: var(--text-secondary);
  margin: 0.5rem 0;
}

.footer a {
  color: var(--accent-primary);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

/* Hero Video */
.hero-video {
  position: relative;
  width: 100%;
  max-width: 800px;
  max-height: 450px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 40px var(--shadow);
}

.hero-video video {
  width: 100%;
}

/* Download Brand Section */
.download-brand {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-bottom: 2rem;
  justify-content: center;
}

.download-icon {
  width: 120px;
  height: 120px;
  border-radius: 24px;
  box-shadow: 0 12px 24px var(--shadow);
  transition: all 0.4s ease;
  flex-shrink: 0;
}

.download-icon:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 16px 32px var(--shadow);
}

.download-text {
  text-align: left;
}

.download-text h2 {
  margin-bottom: 1rem;
  font-size: 2.5rem;
  font-weight: 700;
}

.download-text p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  max-width: 400px;
}

/* Feature Screenshots */
.feature-screenshot {
  margin-bottom: 1.5rem;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid var(--border);
  transition: all var(--transition-duration) var(--transition-easing);
  position: relative;
}

.feature-card:hover .feature-screenshot {
  border-color: var(--accent-primary);
  box-shadow: 0 8px 16px var(--shadow);
}

.feature-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform var(--transition-duration) var(--transition-easing),
    opacity 0.4s ease;
  position: absolute;
  top: 0;
  left: 0;
}

.feature-card:hover .feature-image {
  transform: scale(1.05);
}

/* Feature screenshot theme switching */
.feature-screenshot .screenshot-light {
  opacity: 1;
  z-index: 2;
}

.feature-screenshot .screenshot-dark {
  opacity: 0;
  z-index: 1;
}

[data-theme="dark"] .feature-screenshot .screenshot-light {
  opacity: 0;
  z-index: 1;
}

[data-theme="dark"] .feature-screenshot .screenshot-dark {
  opacity: 1;
  z-index: 2;
}

/* Create space for absolutely positioned feature images */
.feature-screenshot::before {
  content: "";
  display: block;
  width: 100%;
  padding-bottom: 60%; /* Maintain aspect ratio */
}

/* Theme Screenshots */
.theme-screenshot {
  width: 100%;
  max-width: 500px;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
  transition: all var(--transition-duration) var(--transition-easing);
}

.theme-preview {
  padding: 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 300px;
}

/* EPUB Showcase Section */
.epub-showcase {
  padding: 6rem 0;
  background: var(--bg-secondary);
  transition: background-color var(--transition-duration)
    var(--transition-easing);
}

.epub-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  max-width: 900px;
  margin: 0 auto 2rem;
}

.epub-device {
  text-align: center;
}

.device-mockup {
  position: relative;
  margin-bottom: 1rem;
  border-radius: 16px;
  overflow: hidden;
  transition: all var(--transition-duration) var(--transition-easing);
}

.device-mockup:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px var(--shadow);
}

.device-screenshot {
  width: 100%;
  height: auto;
  display: block;
}

.ipad .device-screenshot {
  border-radius: 12px;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.kindle .device-screenshot {
  border-radius: 8px;
  aspect-ratio: 3/4;
  object-fit: cover;
}

.phone .device-screenshot {
  border-radius: 20px;
  aspect-ratio: 9/16;
  object-fit: cover;
}

.device-label {
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 0.5rem;
  font-size: 1.1rem;
}

.showcase-subtitle {
  text-align: center;
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Performance optimizations */
.cta-icon,
.download-icon,
.main-screenshot,
.theme-screenshot {
  will-change: transform;
}

.btn {
  will-change: transform, box-shadow;
}

.feature-card,
.theme-card {
  will-change: transform, box-shadow;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 1.5rem;
  }

  .hero {
    min-height: 85vh;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.125rem;
  }

  .download-brand {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
  }

  .download-text {
    text-align: center;
  }

  .download-text h2 {
    font-size: 2.125rem;
  }

  .epub-showcase {
    padding: 4rem 0;
  }

  .epub-gallery {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .features {
    padding: 4rem 0;
  }

  .writing-showcase {
    padding: 4rem 0;
  }

  .writing-content {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }

  .writing-text h2 {
    font-size: 2.125rem;
  }

  .writing-text p {
    font-size: 1.125rem;
  }

  .themes {
    padding: 4rem 0;
  }

  .download {
    padding: 4rem 0 5rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .feature-card {
    padding: 2rem;
  }

  .theme-tabs {
    flex-direction: column;
    gap: 0.5rem;
  }

  .theme-tab {
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
  }

  .theme-toggle {
    top: 1rem;
    right: 1rem;
  }

  .beta-ribbon {
    font-size: 0.65rem;
    padding: 0.4rem 2.5rem;
  }

  .cta-card {
    padding: 1.5rem 1rem 1rem;
  }

  .cta-brand {
    flex-direction: column;
    gap: 1rem;
  }

  .cta-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
  }

  .price-highlight {
    flex-direction: column;
    gap: 1rem;
  }

  .section-title {
    font-size: 2.125rem;
    margin-bottom: 3rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .hero {
    min-height: 80vh;
  }

  .hero-title {
    font-size: 1.875rem;
    line-height: 1.1;
  }

  .hero-subtitle {
    font-size: 1rem;
    line-height: 1.6;
  }

  .download-icon {
    width: 100px;
    height: 100px;
    border-radius: 20px;
  }

  .download-text h2 {
    font-size: 1.875rem;
  }

  .download-text p {
    font-size: 1rem;
  }

  .feature-screenshot::before {
    padding-bottom: 50%;
  }

  .writing-text h2 {
    font-size: 1.875rem;
  }

  .writing-text p {
    font-size: 1rem;
  }

  .writing-screenshot::before {
    padding-bottom: 50%;
  }

  .btn {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
  }

  .btn-large {
    padding: 1.125rem 2rem;
    font-size: 1.1rem;
  }

  .section-title {
    font-size: 1.875rem;
  }

  .feature-card {
    padding: 1.5rem;
  }

  .scroll-text {
    font-size: 0.75rem;
  }
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .app-icon {
    animation: none !important;
  }

  body {
    animation: none !important;
  }
}