/* ===================================
   Eutonia Website Styles
   =================================== */

/* CSS Custom Properties (Light Mode Default) */
:root {
  /* Brand Colors */
  --primary: #0A84FF;
  --primary-hover: #0070E0;
  --success: #00D26A;
  --warning: #FFD60A;
  --danger: #FF453A;
  --purple: #BF5AF2;
  --orange: #FF9F0A;
  --cyan: #64D2FF;
  --teal: #30D5C8;

  /* Light Mode Colors */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F5F5F7;
  --bg-tertiary: #E8E8ED;
  --text-primary: #1D1D1F;
  --text-secondary: #6E6E73;
  --text-tertiary: #86868B;
  --border-color: #D2D2D7;
  --card-bg: #FFFFFF;
  --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.5);

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --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: 2.5rem;
  --font-size-5xl: 3.5rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
}

/* Dark Mode */
[data-theme="dark"] {
  --bg-primary: #000000;
  --bg-secondary: #1C1C1E;
  --bg-tertiary: #2C2C2E;
  --text-primary: #F5F5F7;
  --text-secondary: #A1A1A6;
  --text-tertiary: #8E8E93;
  --border-color: #38383A;
  --card-bg: #1C1C1E;
  --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --glass-bg: rgba(28, 28, 30, 0.8);
  --glass-border: rgba(255, 255, 255, 0.1);
}

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

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ===================================
   Typography
   =================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

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

.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===================================
   Layout Utilities
   =================================== */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-4xl) 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-3xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-md);
}

.section-header p {
  font-size: var(--font-size-lg);
}

/* ===================================
   Navigation
   =================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
  transition: background var(--transition-base);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.nav-logo {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.theme-toggle {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  color: var(--text-primary);
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
  transform: scale(1.05);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

.mobile-menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Navigation */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  padding: var(--spacing-xl);
  z-index: 999;
}

.mobile-nav.active {
  display: block;
}

.mobile-nav a {
  display: block;
  padding: var(--spacing-md) 0;
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

/* ===================================
   Buttons
   =================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(10, 132, 255, 0.3);
}

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

.btn-secondary:hover {
  background: var(--bg-tertiary);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--font-size-lg);
}

.app-store-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.app-store-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  color: var(--bg-primary);
}

.app-store-btn svg {
  width: 24px;
  height: 24px;
}

/* ===================================
   Hero Section
   =================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  background: var(--bg-primary);
  overflow: hidden;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero-content {
  max-width: 560px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.hero-badge span {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
}

.hero h1 {
  margin-bottom: var(--spacing-lg);
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

.hero p {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xl);
  max-width: 480px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-wrapper {
  position: relative;
  width: 100%;
  max-width: 400px;
}

.hero-phone {
  width: 100%;
  height: auto;
  border-radius: 40px;
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.2);
}

.hero-glow {
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
  opacity: 0.3;
  filter: blur(60px);
  z-index: -1;
}

.hero-glow-1 {
  top: -50px;
  right: -50px;
}

.hero-glow-2 {
  bottom: -50px;
  left: -50px;
  background: radial-gradient(circle, var(--success) 0%, transparent 70%);
}

/* Phone Carousel */
.phone-carousel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

.phone-frame {
  position: relative;
  width: 280px;
  height: 590px;
  background: var(--bg-tertiary);
  border-radius: 40px;
  padding: 8px;
  box-shadow:
    0 40px 80px rgba(0, 0, 0, 0.25),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset;
  overflow: hidden;
}

.carousel-track {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 32px;
  overflow: hidden;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 32px;
  opacity: 0;
  transform: scale(1.02);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.carousel-slide.active {
  opacity: 1;
  transform: scale(1);
}

.carousel-indicators {
  display: flex;
  gap: var(--spacing-sm);
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-tertiary);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.carousel-dot:hover {
  background: var(--text-secondary);
}

.carousel-dot.active {
  width: 24px;
  border-radius: 4px;
  background: var(--primary);
}

/* ===================================
   Features Section (Four Dials)
   =================================== */

.features {
  background: var(--bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.feature-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-3xl);
}

.feature-icon.recovery {
  background: linear-gradient(135deg, rgba(0, 210, 106, 0.15) 0%, rgba(0, 210, 106, 0.05) 100%);
  color: var(--success);
}

.feature-icon.sleep {
  background: linear-gradient(135deg, rgba(191, 90, 242, 0.15) 0%, rgba(191, 90, 242, 0.05) 100%);
  color: var(--purple);
}

.feature-icon.strain {
  background: linear-gradient(135deg, rgba(255, 159, 10, 0.15) 0%, rgba(255, 159, 10, 0.05) 100%);
  color: var(--orange);
}

.feature-icon.battery {
  background: linear-gradient(135deg, rgba(10, 132, 255, 0.15) 0%, rgba(10, 132, 255, 0.05) 100%);
  color: var(--primary);
}

.feature-card h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  margin-bottom: var(--spacing-lg);
}

.feature-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.feature-tag {
  display: inline-flex;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* ===================================
   Why It Matters Section
   =================================== */

.why-matters {
  background: var(--bg-primary);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-3xl);
}

.why-item {
  display: flex;
  gap: var(--spacing-lg);
}

.why-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: white;
  font-weight: 700;
  font-size: var(--font-size-xl);
  border-radius: var(--radius-full);
}

.why-content h4 {
  margin-bottom: var(--spacing-sm);
}

.why-content p {
  font-size: var(--font-size-base);
}

/* ===================================
   Goals Section
   =================================== */

.goals {
  background: var(--bg-secondary);
}

.goals-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.goals-content h2 {
  margin-bottom: var(--spacing-lg);
}

.goals-content > p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xl);
}

.goals-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.goals-list li {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-lg);
  color: var(--text-primary);
}

.goals-list li svg {
  width: 24px;
  height: 24px;
  color: var(--success);
  flex-shrink: 0;
}

.goals-visual {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
}

.goal-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--card-bg);
  border-radius: var(--radius-full);
  box-shadow: var(--card-shadow);
  font-weight: 500;
  color: var(--text-primary);
}

.goal-pill svg {
  width: 20px;
  height: 20px;
}

/* ===================================
   Privacy Section
   =================================== */

.privacy-section {
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  text-align: center;
}

.privacy-icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--success);
  color: white;
  font-size: var(--font-size-4xl);
  border-radius: var(--radius-full);
  margin: 0 auto var(--spacing-xl);
}

.privacy-section h2 {
  margin-bottom: var(--spacing-md);
}

.privacy-section > .container > p {
  font-size: var(--font-size-xl);
  max-width: 600px;
  margin: 0 auto var(--spacing-2xl);
}

.privacy-features {
  display: flex;
  justify-content: center;
  gap: var(--spacing-2xl);
  flex-wrap: wrap;
}

.privacy-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.privacy-feature svg {
  width: 24px;
  height: 24px;
  color: var(--success);
}

/* ===================================
   Pricing Section
   =================================== */

.pricing {
  background: var(--bg-primary);
}

.pricing-card {
  max-width: 480px;
  margin: 0 auto;
  background: var(--card-bg);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--card-shadow);
  text-align: center;
  border: 2px solid var(--primary);
  position: relative;
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: white;
  padding: var(--spacing-xs) var(--spacing-lg);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.pricing-card h3 {
  margin-bottom: var(--spacing-md);
}

.pricing-price {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.pricing-price span {
  font-size: var(--font-size-lg);
  font-weight: 400;
  color: var(--text-secondary);
}

.pricing-period {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
}

.pricing-features {
  text-align: left;
  margin-bottom: var(--spacing-xl);
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) 0;
  color: var(--text-primary);
}

.pricing-features li svg {
  width: 20px;
  height: 20px;
  color: var(--success);
  flex-shrink: 0;
}

/* ===================================
   FAQ Section
   =================================== */

.faq {
  background: var(--bg-secondary);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  background: transparent;
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: var(--bg-secondary);
}

.faq-question svg {
  width: 24px;
  height: 24px;
  color: var(--text-secondary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding: 0 var(--spacing-xl) var(--spacing-lg);
}

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

.faq-answer p {
  font-size: var(--font-size-base);
  line-height: 1.7;
}

/* ===================================
   CTA Section
   =================================== */

.cta {
  background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
  text-align: center;
  padding: var(--spacing-4xl) 0;
}

.cta h2 {
  color: white;
  margin-bottom: var(--spacing-md);
}

.cta p {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xl);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta .app-store-btn {
  background: white;
  color: var(--primary);
}

.cta .app-store-btn:hover {
  color: var(--primary);
}

/* ===================================
   Footer
   =================================== */

.footer {
  background: var(--bg-secondary);
  padding: var(--spacing-2xl) 0;
  border-top: 1px solid var(--border-color);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.footer-logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.footer-links {
  display: flex;
  gap: var(--spacing-xl);
}

.footer-links a {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

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

.footer-copyright {
  width: 100%;
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  margin-top: var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
}

/* ===================================
   Privacy Policy Page
   =================================== */

.privacy-page {
  padding-top: calc(var(--nav-height) + var(--spacing-3xl));
  padding-bottom: var(--spacing-4xl);
  min-height: 100vh;
}

.privacy-page h1 {
  margin-bottom: var(--spacing-lg);
}

.privacy-page .last-updated {
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-2xl);
}

.privacy-page h2 {
  font-size: var(--font-size-2xl);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
}

.privacy-page p {
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.privacy-page ul {
  list-style: disc;
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.privacy-page ul li {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.7;
}

/* ===================================
   Toast Notification
   =================================== */

.toast {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--font-size-lg);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  z-index: 9999;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  visibility: visible;
}

/* ===================================
   Responsive Styles
   =================================== */

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero p {
    max-width: 100%;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
    margin-bottom: var(--spacing-xl);
  }

  .phone-frame {
    width: 240px;
    height: 506px;
  }

  .goals-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .goals-list {
    align-items: center;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-4xl: 4rem;
  }

  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }

  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

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

  .why-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

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

  .footer-container {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }

  .phone-frame {
    width: 200px;
    height: 422px;
    border-radius: 32px;
    padding: 6px;
  }

  .carousel-track {
    border-radius: 26px;
  }

  .carousel-slide {
    border-radius: 26px;
  }

  .hero-cta {
    flex-direction: column;
  }

  .hero-cta .btn,
  .hero-cta .app-store-btn {
    width: 100%;
  }

  .feature-card {
    padding: var(--spacing-lg);
  }

  .pricing-card {
    padding: var(--spacing-lg);
  }

  .faq-question {
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
  }

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

/* ===================================
   Animations
   =================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* Intersection Observer Animation Classes */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}