/*
 * Automorphism - Modern Design System
 * Clean, minimal, performance-first CSS
 */

/* ==========================================================================
   Design Tokens & CSS Variables
   ========================================================================== */

:root {
  /* Colors - Modern, high-impact palette */
  --color-primary: #2563EB;
  --color-primary-light: #3B82F6;
  --color-primary-dark: #1E40AF;
  --color-secondary: #10B981;
  --color-accent: #F59E0B;
  --color-gradient-start: #6366F1;
  --color-gradient-end: #8B5CF6;

  /* Neutrals - Clean, modern grays */
  --color-gray-50: #FAFAFA;
  --color-gray-100: #F5F5F5;
  --color-gray-200: #EEEEEE;
  --color-gray-300: #E0E0E0;
  --color-gray-400: #BDBDBD;
  --color-gray-500: #9E9E9E;
  --color-gray-600: #757575;
  --color-gray-700: #424242;
  --color-gray-800: #212121;
  --color-gray-900: #121212;

  /* Semantic colors */
  --color-text: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-600);
  --color-text-muted: var(--color-gray-500);
  --color-background: #FFFFFF;
  --color-background-secondary: var(--color-gray-50);
  --color-border: var(--color-gray-200);
  --color-border-light: var(--color-gray-100);

  /* Typography Scale */
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
  --font-size-6xl: 3.75rem;   /* 60px */

  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing Scale - 4px base */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows - Subtle, modern */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --container-max-width: 1200px;
  --container-padding: var(--space-6);
  --header-height: 80px;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --color-text: var(--color-gray-100);
    --color-text-secondary: var(--color-gray-400);
    --color-text-muted: var(--color-gray-500);
    --color-background: var(--color-gray-900);
    --color-background-secondary: var(--color-gray-800);
    --color-border: var(--color-gray-700);
    --color-border-light: var(--color-gray-800);
  }
}

/* ==========================================================================
   Base Styles & Resets
   ========================================================================== */

* {
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI',
               system-ui, -apple-system, sans-serif;
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI',
               system-ui, -apple-system, sans-serif;
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  margin: 0 0 var(--space-4) 0;
}

h1 { font-size: var(--font-size-5xl); font-weight: 800; }
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 {
  margin: 0 0 var(--space-4) 0;
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

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

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

ul, ol {
  margin: 0 0 var(--space-4) 0;
  padding-left: var(--space-6);
}

li {
  margin-bottom: var(--space-2);
  color: var(--color-text-secondary);
}

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

/* ==========================================================================
   Layout Components
   ========================================================================== */

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

.section {
  padding: var(--space-20) 0;
}

.section-sm {
  padding: var(--space-12) 0;
}

.section-lg {
  padding: var(--space-24) 0;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

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

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

.justify-between {
  justify-content: space-between;
}

.gap-4 {
  gap: var(--space-4);
}

.gap-6 {
  gap: var(--space-6);
}

/* Text Utilities */
.text-center {
  text-align: center;
}

.text-sm {
  font-size: var(--font-size-sm);
}

.text-lg {
  font-size: var(--font-size-lg);
}

.text-xl {
  font-size: var(--font-size-xl);
}

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

.font-medium {
  font-weight: var(--font-weight-medium);
}

.font-semibold {
  font-weight: var(--font-weight-semibold);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  height: var(--header-height);
}

@media (prefers-color-scheme: light) {
  .header {
    background: rgba(15, 23, 42, 0.95);
  }
}

.nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: white;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.logo:hover {
  color: var(--color-primary-light);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: rgba(226, 232, 240, 0.8);
  font-weight: var(--font-weight-medium);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: white;
  background-color: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
  color: var(--color-primary-light);
  background-color: rgba(59, 130, 246, 0.15);
}

/* Mobile Navigation */
.mobile-menu-button {
  display: none;
  background: none;
  border: none;
  padding: var(--space-2);
  cursor: pointer;
  color: rgba(226, 232, 240, 0.8);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.mobile-menu-button:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    gap: 0;
    padding: var(--space-4);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.show {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-menu li {
    width: 100%;
  }

  .nav-link {
    display: block;
    width: 100%;
    text-align: center;
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-2);
  }

  .mobile-menu-button {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

/* ==========================================================================
   Buttons & CTAs
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.3);
  font-weight: var(--font-weight-semibold);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px 0 rgba(37, 99, 235, 0.4);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   Cards & Components
   ========================================================================== */

.card {
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

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

.card-header {
  margin-bottom: var(--space-6);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
}

.card-description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* Feature Cards */
.feature-card {
  text-align: center;
  padding: var(--space-8);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  border-color: rgba(99, 102, 241, 0.3);
  background: rgba(99, 102, 241, 0.05);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1);
  box-shadow: 0 12px 40px rgba(99, 102, 241, 0.4);
}

.feature-card:hover .feature-icon svg {
  transform: scale(1.1);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-6) auto;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-3xl);
  color: white;
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.3);
  position: relative;
  transition: var(--transition-base);
}

.feature-icon svg {
  width: 32px;
  height: 32px;
  stroke: currentColor;
  transition: var(--transition-fast);
}

.feature-icon::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
  pointer-events: none;
}

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

.hero {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #334155 100%);
  padding: var(--space-24) 0 var(--space-20) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

@media (prefers-color-scheme: light) {
  .hero {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #334155 100%);
  }
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
  pointer-events: none;
  animation: heroBackground 20s ease-in-out infinite;
}

@keyframes heroBackground {
  0%, 100% {
    background:
      radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
      radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
      radial-gradient(circle at 40% 40%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
  }
  33% {
    background:
      radial-gradient(circle at 70% 30%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
      radial-gradient(circle at 30% 70%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
      radial-gradient(circle at 60% 60%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
  }
  66% {
    background:
      radial-gradient(circle at 40% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
      radial-gradient(circle at 60% 80%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
      radial-gradient(circle at 20% 50%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
  }
}

.hero::after {
  content: '';
  position: absolute;
  top: 10%;
  left: -5%;
  width: 110%;
  height: 80%;
  background:
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 98px,
      rgba(255, 255, 255, 0.03) 100px,
      rgba(255, 255, 255, 0.03) 102px
    );
  pointer-events: none;
  animation: heroGrid 30s linear infinite;
}

@keyframes heroGrid {
  0% { transform: translateX(0px); }
  100% { transform: translateX(100px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  animation: heroContentFadeIn 1s ease-out;
}

@keyframes heroContentFadeIn {
  0% {
    opacity: 0;
    transform: translateY(30px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title {
  font-size: clamp(var(--font-size-4xl), 8vw, var(--font-size-6xl));
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-6);
  background: linear-gradient(135deg, #FFFFFF 0%, #E2E8F0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  animation: heroTitleSlideIn 0.8s ease-out 0.2s both;
}

@keyframes heroTitleSlideIn {
  0% {
    opacity: 0;
    transform: translateY(50px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: rgba(226, 232, 240, 0.9);
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: var(--line-height-relaxed);
  font-weight: var(--font-weight-normal);
  animation: heroSubtitleSlideIn 0.8s ease-out 0.4s both;
}

@keyframes heroSubtitleSlideIn {
  0% {
    opacity: 0;
    transform: translateY(30px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
  animation: heroActionsSlideIn 0.8s ease-out 0.6s both;
}

@keyframes heroActionsSlideIn {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   App Showcase Section
   ========================================================================== */

.app-showcase {
  background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-background) 100%);
  position: relative;
  overflow: hidden;
}

@media (prefers-color-scheme: dark) {
  .app-showcase {
    background: linear-gradient(135deg, var(--color-gray-800) 0%, var(--color-gray-900) 100%);
  }
}

.app-demo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  margin-top: var(--space-12);
}

.demo-tabs {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  padding: var(--space-1);
}

.demo-tab {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: var(--transition-fast);
  flex: 1;
  justify-content: center;
}

.demo-tab svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
}

.demo-tab.active {
  background: var(--color-primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.demo-tab:hover:not(.active) {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text);
}

.demo-features {
  position: relative;
}

.demo-feature {
  opacity: 0;
  visibility: hidden;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  transition: all 0.3s ease-in-out;
  transform: translateY(10px);
}

.demo-feature.active {
  opacity: 1;
  visibility: visible;
  position: static;
  transform: translateY(0);
}

.demo-feature h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.demo-feature p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  line-height: var(--line-height-relaxed);
}

.feature-benefits {
  list-style: none;
  padding: 0;
  margin: 0;
}

.feature-benefits li {
  display: flex;
  align-items: center;
  padding: var(--space-2) 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
}

.phone-mockup {
  position: relative;
  width: 280px;
  height: 560px;
  margin: 0 auto;
  background: linear-gradient(135deg, #1f1f23 0%, #000000 100%);
  border-radius: 40px;
  padding: 8px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: var(--color-background);
  border-radius: 32px;
  overflow: hidden;
  position: relative;
}

.demo-screen {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease-in-out;
  transform: translateX(20px);
}

.demo-screen.active {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.app-interface {
  padding: var(--space-6);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.interface-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border-light);
}

.interface-header h4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin: 0;
  color: var(--color-text);
}

.interface-header .date {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.macro-rings {
  display: flex;
  justify-content: space-around;
  margin: var(--space-8) 0;
  gap: var(--space-4);
}

.macro-ring {
  position: relative;
  width: 70px;
  height: 70px;
}

.ring-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    var(--ring-color, var(--color-primary)) 0deg,
    var(--ring-color, var(--color-primary)) calc(var(--progress, 0%) * 3.6deg),
    var(--color-border-light) calc(var(--progress, 0%) * 3.6deg),
    var(--color-border-light) 360deg
  );
  mask: radial-gradient(circle, transparent 35%, black 36%);
  -webkit-mask: radial-gradient(circle, transparent 35%, black 36%);
}

.macro-ring.protein {
  --ring-color: var(--color-primary);
}

.macro-ring.carbs {
  --ring-color: var(--color-secondary);
}

.macro-ring.fats {
  --ring-color: var(--color-accent);
}

.ring-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.macro-value {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  line-height: 1;
}

.macro-label {
  font-size: 10px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.recent-foods {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.food-item {
  padding: var(--space-3) var(--space-4);
  background: var(--color-background-secondary);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.analytics-chart {
  margin: var(--space-6) 0;
}

.chart-bars {
  display: flex;
  gap: var(--space-2);
  height: 120px;
  align-items: end;
  margin-bottom: var(--space-2);
}

.bar {
  flex: 1;
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  min-height: 20px;
}

.chart-labels {
  display: flex;
  gap: var(--space-2);
}

.chart-labels span {
  flex: 1;
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.stat-item {
  text-align: center;
  padding: var(--space-4);
  background: var(--color-background-secondary);
  border-radius: var(--radius-lg);
}

.stat-value {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.goals-progress {
  margin: var(--space-6) 0;
}

.goal-item {
  margin-bottom: var(--space-4);
}

.goal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2);
}

.goal-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.goal-target {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.progress-bar {
  height: 8px;
  background: var(--color-border-light);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

.recommendation {
  margin-top: var(--space-6);
  padding: var(--space-4);
  background: var(--color-background-secondary);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-accent);
}

.recommendation p {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .app-demo {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .phone-mockup {
    width: 250px;
    height: 500px;
  }

  .demo-tabs {
    flex-direction: column;
    gap: var(--space-1);
  }

  .demo-tab {
    justify-content: flex-start;
  }
}

/* ==========================================================================
   Social Proof & Testimonials Section
   ========================================================================== */

.social-proof {
  background: var(--color-background-secondary);
  position: relative;
}

.stats-showcase {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-16);
}

.stat-card {
  text-align: center;
  padding: var(--space-8);
  background: var(--color-background);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stat-number {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.stars {
  display: flex;
  gap: 2px;
  margin-left: var(--space-1);
}

.stars svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
}

.stat-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.testimonials {
  margin: var(--space-16) 0;
  position: relative;
}

.testimonial-carousel {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  min-height: 300px;
}

.testimonial {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateX(50px);
  transition: all 0.5s ease-in-out;
}

.testimonial.active {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.testimonial-content {
  text-align: center;
  padding: var(--space-8);
  background: var(--color-background);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  position: relative;
}

.quote-icon {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.quote-icon svg {
  width: 20px;
  height: 20px;
  color: white;
}

.testimonial-content p {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  margin: var(--space-8) 0 var(--space-6) 0;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.author-avatar {
  width: 50px;
  height: 50px;
}

.avatar-placeholder {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: white;
}

.author-info {
  text-align: left;
}

.author-name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.author-role {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.testimonial-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.testimonial-nav-btn {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  background: var(--color-border);
  cursor: pointer;
  transition: var(--transition-fast);
}

.testimonial-nav-btn.active {
  background: var(--color-primary);
  transform: scale(1.2);
}

.testimonial-nav-btn:hover:not(.active) {
  background: var(--color-text-muted);
  transform: scale(1.1);
}

.trust-indicators {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-16);
}

.trust-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-background);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: var(--transition-base);
}

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

.trust-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.trust-icon svg {
  width: 24px;
  height: 24px;
}

.trust-content h4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

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

@media (max-width: 768px) {
  .stats-showcase {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

  .stat-card {
    padding: var(--space-6);
  }

  .stat-number {
    font-size: var(--font-size-4xl);
  }

  .testimonial-content {
    padding: var(--space-6);
  }

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

  .author-info {
    text-align: center;
  }

  .testimonial-author {
    flex-direction: column;
    gap: var(--space-2);
  }

  .trust-indicators {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .stats-showcase {
    grid-template-columns: 1fr;
  }
}

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

.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 50%, var(--color-gradient-end) 100%);
  color: white;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.cta-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: 1;
}

.cta-text .section-title {
  color: white;
  margin-bottom: var(--space-6);
}

.cta-text .section-subtitle {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-8);
}

.cta-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.cta-feature {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-base);
}

.cta-feature svg {
  width: 20px;
  height: 20px;
  color: var(--color-secondary);
  flex-shrink: 0;
}

.download-options {
  margin-top: var(--space-8);
}

.app-store-badges {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.app-store-badge {
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  text-decoration: none;
  transition: var(--transition-fast);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.app-store-badge:hover {
  background: rgba(0, 0, 0, 0.4);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.badge-content {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.badge-icon svg {
  width: 28px;
  height: 28px;
  color: white;
}

.badge-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.badge-line1 {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.8);
  line-height: 1;
}

.badge-line2 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: white;
  line-height: 1.2;
}

.alternative-download {
  text-align: center;
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.alternative-download p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
}

.cta-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.qr-code-section {
  text-align: center;
}

.qr-code {
  display: inline-block;
  padding: var(--space-6);
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.qr-placeholder {
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-100);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
}

.qr-placeholder svg {
  width: 80px;
  height: 80px;
  color: var(--color-gray-400);
}

.qr-text {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  margin: 0;
}

.final-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-16);
  padding-top: var(--space-16);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.final-stat {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  text-align: left;
}

.stat-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-secondary);
}

.stat-content .stat-number {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: white;
  margin-bottom: var(--space-1);
}

.stat-content .stat-label {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: var(--font-weight-medium);
}

@media (max-width: 768px) {
  .cta-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    text-align: center;
  }

  .app-store-badges {
    flex-direction: column;
    align-items: center;
  }

  .app-store-badge {
    width: 100%;
    max-width: 200px;
    justify-content: center;
  }

  .final-stats {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .final-stat {
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .cta-features {
    align-items: flex-start;
  }

  .qr-placeholder {
    width: 100px;
    height: 100px;
  }

  .qr-placeholder svg {
    width: 60px;
    height: 60px;
  }
}

/* ==========================================================================
   Sections
   ========================================================================== */

.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--line-height-relaxed);
}

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

.footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--space-12) 0 var(--space-6) 0;
  margin-top: var(--space-20);
}

.footer-content {
  text-align: center;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.footer-link {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
}

.footer-link:hover {
  color: var(--color-gray-200);
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 768px) {
  :root {
    --container-padding: var(--space-4);
    --space-20: 3rem;
    --space-24: 4rem;
  }

  .hero {
    padding: var(--space-12) 0 var(--space-10) 0;
  }

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

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .card {
    padding: var(--space-6);
  }

  .feature-card {
    padding: var(--space-6);
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--font-size-3xl);
  }

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

  .section-title {
    font-size: var(--font-size-3xl);
  }
}

/* ==========================================================================
   Content Styling
   ========================================================================== */

.content {
  line-height: var(--line-height-relaxed);
}

.content h1,
.content h2,
.content h3,
.content h4,
.content h5,
.content h6 {
  margin-top: var(--space-12);
  margin-bottom: var(--space-6);
}

.content h2:first-child,
.content h1:first-child {
  margin-top: 0;
}

.content p {
  margin-bottom: var(--space-6);
}

.content ul,
.content ol {
  margin-bottom: var(--space-6);
  padding-left: var(--space-8);
}

.content ul li,
.content ol li {
  margin-bottom: var(--space-3);
}

.content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: var(--space-4) var(--space-6);
  margin: var(--space-8) 0;
  background-color: var(--color-background-secondary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.content blockquote p {
  margin-bottom: 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

.content pre {
  background-color: var(--color-gray-900);
  color: var(--color-gray-100);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin: var(--space-6) 0;
}

.content code {
  background-color: var(--color-background-secondary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: 0.9em;
  color: var(--color-primary);
  font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
}

.content pre code {
  background: none;
  padding: 0;
  color: inherit;
}

.content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-8) 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.content th,
.content td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.content th {
  background-color: var(--color-background-secondary);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

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

/* ==========================================================================
   Utilities & Helpers
   ========================================================================== */

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

.no-scroll {
  overflow: hidden;
}

/* Accessibility */
@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;
  }

  /* Disable hero animations */
  .hero::before,
  .hero::after {
    animation: none !important;
  }

  /* Disable auto-cycling features */
  .demo-tab,
  .testimonial-nav-btn {
    pointer-events: auto !important;
  }

  /* Keep essential transforms but remove animations */
  .feature-card:hover,
  .card:hover,
  .btn:hover {
    transform: none !important;
  }
}

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

/* Enhanced Focus Styles */
button:focus-visible,
.btn:focus-visible,
.demo-tab:focus-visible,
.testimonial-nav-btn:focus-visible,
.app-store-badge:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-md);
}

/* High Contrast Support */
@media (prefers-contrast: high) {
  :root {
    --color-border: #000000;
    --color-text-secondary: var(--color-text);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.8);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.8);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.8);
  }

  .feature-card,
  .card,
  .testimonial-content,
  .stat-card,
  .trust-item {
    border-width: 2px;
    border-color: var(--color-text);
  }

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