/* ================================
   Weather4Fly - Modern Website CSS
   ================================ */

/* CSS Variables for theming */
:root {
  /* Colors - Light Theme */
  --primary-color: #007AFF;
  --primary-hover: #0051D8;
  --secondary-color: #5856D6;
  --accent-color: #FF9500;
  --success-color: #34C759;
  --warning-color: #FF9500;
  --danger-color: #FF3B30;

  /* Background Colors */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F2F2F7;
  --bg-tertiary: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

  /* Text Colors */
  --text-primary: #1D1D1F;
  --text-secondary: #6B6B6B;
  --text-tertiary: #8E8E93;
  --text-inverse: #FFFFFF;

  /* Border Colors */
  --border-light: #E5E5EA;
  --border-medium: #C7C7CC;
  --border-dark: #A1A1A6;

  /* Shadow */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.1);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, '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: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;

  /* 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;

  /* Layout */
  --container-max-width: 1200px;
  --header-height: 80px;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 16px;

  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-base: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #000000;
  --bg-secondary: #1C1C1E;
  --bg-tertiary: #2C2C2E;
  --bg-card: #1C1C1E;
  --bg-hero: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);

  --text-primary: #FFFFFF;
  --text-secondary: #EBEBF5;
  --text-tertiary: #EBEBF599;
  --text-inverse: #000000;

  --border-light: #38383A;
  --border-medium: #48484A;
  --border-dark: #58585A;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.3);
}

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

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

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

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);
  overflow-x: hidden;
}

/* ================================
   Loading Overlay
   ================================ */

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 1;
  visibility: visible;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.loading-overlay.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-spinner .spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-light);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ================================
   Accessibility
   ================================ */

.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary-color);
  color: white;
  padding: 8px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 10000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 6px;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  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 {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

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

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

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

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

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

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  font-size: var(--font-size-4xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-inverse);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--text-inverse);
}

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

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

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

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: var(--bg-primary);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: all var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

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

.nav-logo {
  display: flex;
  align-items: center;
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-image {
  width: 40px;
  height: 40px;
  margin-right: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
}

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

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-xl);
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

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

/* Theme Toggle */
.theme-toggle {
  width: 44px;
  height: 44px;
  border: none;
  background: var(--bg-secondary);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  position: relative;
}

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

.theme-icon {
  position: absolute;
  transition: all var(--transition-base);
  color: var(--text-secondary);
}

[data-theme="light"] .theme-icon.dark-icon {
  opacity: 0;
  transform: rotate(180deg);
}

[data-theme="dark"] .theme-icon.light-icon {
  opacity: 0;
  transform: rotate(180deg);
}

.nav-cta {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
}

/* Mobile Navigation */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 30px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.hamburger-line {
  width: 100%;
  height: 3px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.nav-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

.nav-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 999;
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

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

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

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 1;
}

.hero-container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
  min-height: calc(100vh - var(--header-height));
}

.hero-content {
  color: var(--text-inverse);
}

.hero-icon {
  width: 80px;
  height: 80px;
  margin-bottom: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
}

.hero-title {
  font-size: var(--font-size-6xl);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  color: #FFFFFF;
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
  color: rgba(255, 255, 255, 0.9);
}

.hero-description {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2xl);
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.app-store-btn {
  display: block;
  transition: transform var(--transition-base);
}

.app-store-btn:hover {
  transform: translateY(-3px);
}

.app-store-btn img {
  height: 60px;
  width: auto;
}

/* Hero Phone Mockup */
.hero-phone {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.phone-slider {
  position: relative;
  width: 300px;
  height: 600px;
  background: linear-gradient(145deg, #f0f0f0, #cacaca);
  border-radius: 30px;
  padding: 20px;
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

[data-theme="dark"] .phone-slider {
  background: linear-gradient(145deg, #2c2c2c, #1a1a1a);
}

.phone-screenshot {
  position: absolute;
  top: 20px;
  left: 20px;
  width: calc(100% - 40px);
  height: calc(100% - 40px);
  border-radius: 20px;
  object-fit: cover;
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.phone-screenshot.active {
  opacity: 1;
}

.slider-dots {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: all var(--transition-base);
}

.dot.active {
  background: rgba(255, 255, 255, 0.8);
  transform: scale(1.2);
}

/* ================================
   Features Section
   ================================ */

.features {
  padding: var(--spacing-4xl) 0;
  background: var(--bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-2xl);
  margin-top: var(--spacing-3xl);
}

.feature-card {
  background: var(--bg-card);
  padding: var(--spacing-2xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid var(--border-light);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
  display: block;
}

.feature-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

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

/* ================================
   Screenshots Section
   ================================ */

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

.screenshots-slider {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-3xl);
}

.screenshot-card {
  background: var(--bg-card);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid var(--border-light);
}

.screenshot-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.screenshot-card img {
  width: 100%;
  height: 400px;
  object-fit: contain;
  background: var(--bg-secondary);
}

.screenshot-card h4 {
  padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-sm);
  font-size: var(--font-size-lg);
  margin-bottom: 0;
}

.screenshot-card p {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  margin-bottom: 0;
  color: var(--text-secondary);
}

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

.privacy {
  padding: var(--spacing-4xl) 0;
  background: var(--bg-secondary);
}

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

.privacy-content h2 {
  margin-bottom: var(--spacing-2xl);
}

.privacy-highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin: var(--spacing-3xl) 0;
}

.privacy-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  text-align: left;
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
}

.privacy-icon {
  font-size: var(--font-size-2xl);
  flex-shrink: 0;
}

.privacy-item h4 {
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-lg);
}

.privacy-item p {
  margin-bottom: 0;
  color: var(--text-secondary);
}

.privacy-link {
  display: inline-flex;
  align-items: center;
  background: var(--primary-color);
  color: var(--text-inverse);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: all var(--transition-base);
}

.privacy-link:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  color: var(--text-inverse);
}

/* ================================
   Download Section
   ================================ */

.download {
  padding: var(--spacing-4xl) 0;
  background: var(--bg-hero);
  color: var(--text-inverse);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.download::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1;
}

.download-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  margin: 0 auto;
}

.download-content h2 {
  color: var(--text-inverse);
  margin-bottom: var(--spacing-lg);
}

.download-content p {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2xl);
}

.app-store-btn.large img {
  height: 80px;
}

.download-note {
  margin-top: var(--spacing-lg);
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
}

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

.footer {
  background: var(--bg-tertiary);
  border-top: 1px solid var(--border-light);
  padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

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

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-section h4,
.footer-section h5 {
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.footer-logo {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.footer-logo-image {
  width: 40px;
  height: 40px;
  margin-right: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
}

.footer-logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: 0;
}

.footer-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-social {
  margin-top: var(--spacing-lg);
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--bg-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-base);
}

.social-link:hover {
  background: var(--primary-color);
  color: var(--text-inverse);
  transform: translateY(-2px);
}

.footer-app-btn img {
  height: 50px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-light);
}

.footer-copyright p {
  margin-bottom: 0;
  color: var(--text-tertiary);
}

.footer-legal {
  display: flex;
  gap: var(--spacing-lg);
}

.legal-link {
  color: var(--text-tertiary);
  font-size: var(--font-size-sm);
}

.legal-link:hover {
  color: var(--primary-color);
}

/* ================================
   Back to Top Button
   ================================ */

.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: var(--text-inverse);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: 1000;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary-hover);
  transform: translateY(-3px);
}

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

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-2xl);
  }

  .hero-phone {
    order: -1;
  }

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

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

@media (max-width: 768px) {
  :root {
    --font-size-6xl: 2.5rem;
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
    --spacing-4xl: 3rem;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: var(--bg-primary);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: var(--spacing-2xl);
    gap: var(--spacing-xl);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    border-top: 1px solid var(--border-light);
    z-index: 1000;
  }

  .nav-menu.active {
    transform: translateX(0);
  }

  .nav-toggle {
    display: flex;
  }

  .nav-cta {
    display: none;
  }

  .hero {
    min-height: 80vh;
  }

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

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

  .phone-slider {
    width: 200px;
    height: 400px;
  }

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

  .screenshots-slider {
    grid-template-columns: 1fr;
  }

  .screenshot-card img {
    height: 350px;
  }

  .privacy-highlights {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .footer-legal {
    order: -1;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-2xl: 2rem;
    --spacing-3xl: 2.5rem;
    --spacing-4xl: 2rem;
  }

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

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

  .screenshot-card img {
    height: 300px;
  }

  .app-store-btn img {
    height: 50px;
  }

  .back-to-top {
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    width: 45px;
    height: 45px;
  }
}

/* ================================
   Animation & Effects
   ================================ */

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* ================================
   Print Styles
   ================================ */

@media print {
  .header,
  .nav-toggle,
  .theme-toggle,
  .back-to-top,
  .hero-buttons,
  .download {
    display: none !important;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
    color: #000;
    background: #fff;
  }

  .hero {
    background: none;
    color: #000;
  }
}

/* ================================
   Reduced Motion
   ================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}