/* ==========================================================================
   CSS Custom Properties - Poemia Modern & Bold Theme
   ========================================================================== */
:root {
  /* Colors - Poemia Purple (brand: #7E69D2) */
  --color-primary: #7E69D2;
  --color-primary-dark: #6B56BF;
  --color-primary-light: #A594E0;
  --color-secondary: #9B85E3;
  --color-secondary-dark: #8670D0;
  --color-accent: #B3A1E6;

  --color-text: #1a1a2e;
  --color-text-light: #555770;
  --color-text-muted: #8890a4;
  --color-text-inverse: #ffffff;

  --color-background: #ffffff;
  --color-background-alt: #f7f4ff;
  --color-background-card: #ffffff;
  --color-background-dark: #2a1f54;

  --color-border: #e8e0f7;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #7E69D2 0%, #9B85E3 50%, #B3A1E6 100%);
  --gradient-hero: linear-gradient(160deg, #8E7AD8 0%, #7E69D2 40%, #6B56BF 100%);
  --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.9) 0%, rgba(247, 244, 255, 0.6) 100%);
  --gradient-glow: radial-gradient(ellipse at center, rgba(126, 105, 210, 0.2) 0%, transparent 70%);

  /* Typography */
  --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2.25rem;
  --font-size-4xl: 2.75rem;
  --font-size-5xl: 3.5rem;

  --line-height: 1.7;
  --line-height-tight: 1.15;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 5rem;
  --spacing-4xl: 7rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;
  --radius-xl: 1.75rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(126, 105, 210, 0.08);
  --shadow-md: 0 4px 16px rgba(126, 105, 210, 0.12);
  --shadow-lg: 0 8px 32px rgba(126, 105, 210, 0.15);
  --shadow-xl: 0 16px 48px rgba(126, 105, 210, 0.2);
  --shadow-glow: 0 0 40px rgba(126, 105, 210, 0.35);

  /* Transitions */
  --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 600ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Container */
  --container-max-width: 1200px;

  /* Hero - Modern Minimal Warm */
  --color-hero-bg: #FAFAFA;
  --color-hero-subtitle: #64607D;
  --hero-orb-purple: rgba(126, 105, 210, 0.12);
  --hero-orb-lavender: rgba(179, 161, 255, 0.10);
  --hero-orb-peach: rgba(255, 200, 170, 0.12);
  --gradient-hero-text: linear-gradient(135deg, #7E69D2 0%, #B3A1E6 50%, #D4A8E0 100%);
  --shadow-btn-primary: 0 4px 14px rgba(126, 105, 210, 0.35);
  --shadow-btn-primary-hover: 0 8px 24px rgba(126, 105, 210, 0.45);
  --shadow-phone: 0 20px 60px rgba(126, 105, 210, 0.15), 0 8px 20px rgba(0, 0, 0, 0.06);
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul {
  list-style: none;
}

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

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
  position: relative;
  display: inline-block;
  width: 100%;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  margin: var(--spacing-md) auto 0;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.75rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  font-family: var(--font-family);
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  border: none;
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
  color: var(--color-text-inverse);
}

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

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  transform: translateY(-3px);
}

.btn-large {
  padding: 0.875rem 2.25rem;
  font-size: var(--font-size-lg);
}

.btn-download {
  background-color: var(--color-background-card);
  color: var(--color-text);
  padding: var(--spacing-md) var(--spacing-xl);
  gap: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.btn-download:hover {
  background-color: var(--color-background-alt);
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  color: var(--color-text);
}

.btn-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.3;
}

.btn-text small {
  font-size: var(--font-size-sm);
  font-weight: 400;
  color: var(--color-text-muted);
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1000;
  transition: box-shadow var(--transition-base);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary);
  padding: 5px;
}

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

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

.nav-links a {
  color: var(--color-text-light);
  font-weight: 500;
  font-size: var(--font-size-sm);
  letter-spacing: 0.01em;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: var(--transition-fast);
  border-radius: 1px;
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  background-color: var(--color-background-alt);
  border-radius: var(--radius-full);
  padding: 3px;
  border: 1px solid var(--color-border);
}

.lang-btn {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  font-family: var(--font-family);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: none;
  border: none;
  color: var(--color-text-muted);
}

.lang-btn.active {
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  box-shadow: 0 2px 8px rgba(126, 105, 210, 0.3);
}

.lang-btn:hover:not(.active) {
  color: var(--color-text);
}

/* ==========================================================================
   Floating Decorative Shapes
   ========================================================================== */
.floating-shape {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero-decoration,
.download-decoration {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  pointer-events: none;
}

/* Ambient gradient orbs for hero */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
  z-index: 0;
}

.hero-orb-1 {
  width: 500px;
  height: 500px;
  background: var(--hero-orb-purple);
  top: -150px;
  right: -100px;
  animation: float1 12s ease-in-out infinite;
}

.hero-orb-2 {
  width: 400px;
  height: 400px;
  background: var(--hero-orb-peach);
  bottom: -120px;
  left: -100px;
  animation: float2 14s ease-in-out infinite;
}

.hero-orb-3 {
  width: 300px;
  height: 300px;
  background: var(--hero-orb-lavender);
  top: 40%;
  left: 30%;
  animation: float3 10s ease-in-out infinite;
}

.download-decoration .shape-1 {
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.06);
  top: -100px;
  right: -80px;
  animation: float1 8s ease-in-out infinite;
}

.download-decoration .shape-2 {
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.04);
  bottom: -60px;
  left: -60px;
  animation: float2 10s ease-in-out infinite;
}

.download-decoration .shape-3 {
  width: 120px;
  height: 120px;
  background: rgba(255, 255, 255, 0.05);
  top: 30%;
  left: 15%;
  animation: float3 7s ease-in-out infinite;
}

@keyframes float1 {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-25px) rotate(5deg); }
}

@keyframes float2 {
  0%, 100% { transform: translateY(0) rotate(0deg) scale(1); }
  50% { transform: translateY(-18px) rotate(-4deg) scale(1.05); }
}

@keyframes float3 {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(10px, -15px); }
  66% { transform: translate(-8px, -8px); }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding: calc(var(--spacing-4xl) + 72px) 0 var(--spacing-3xl);
  background: var(--color-hero-bg);
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, #F5F3FF 0%, #FAFAFA 40%, #FFFFFF 100%);
  pointer-events: none;
  z-index: -1;
}

.hero-container {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-3xl);
  text-align: left;
  position: relative;
  z-index: 1;
}

.hero-content {
  flex: 1;
  max-width: 560px;
}

/* Hero badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(126, 105, 210, 0.08);
  border: 1px solid rgba(126, 105, 210, 0.15);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xl);
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.hero h1 .hero-gradient-word {
  background: var(--gradient-hero-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-hero-subtitle);
  margin-bottom: var(--spacing-2xl);
  max-width: 480px;
  line-height: 1.65;
  font-weight: 400;
}

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

.hero .btn-primary {
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  font-weight: 600;
  box-shadow: var(--shadow-btn-primary);
  border: none;
}

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

.hero .btn-secondary {
  border-color: var(--color-border);
  color: var(--color-text-light);
  background-color: transparent;
}

.hero .btn-secondary:hover {
  background-color: rgba(126, 105, 210, 0.06);
  border-color: var(--color-primary-light);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.hero-image {
  flex: 0 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero-image::before {
  content: '';
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(126, 105, 210, 0.15) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 0;
}

.hero-image img {
  max-width: 380px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-phone);
  position: relative;
  z-index: 1;
  transform: rotate(2deg);
  transition: transform var(--transition-base);
}

.hero-image:hover img {
  transform: rotate(0deg) translateY(-4px);
}

/* ==========================================================================
   Features Section
   ========================================================================== */
.features {
  padding: var(--spacing-4xl) 0;
  background-color: var(--color-background-alt);
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-2xl);
}

.feature-card {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: var(--spacing-2xl) var(--spacing-xl);
  border-radius: var(--radius-xl);
  text-align: center;
  border: 1px solid rgba(126, 105, 210, 0.1);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.feature-icon-wrapper {
  width: 68px;
  height: 68px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  font-size: 1.75rem;
  box-shadow: 0 8px 20px rgba(126, 105, 210, 0.25);
}

.feature-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.feature-card p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  line-height: 1.65;
}

/* ==========================================================================
   Screenshots Section
   ========================================================================== */
.screenshots {
  padding: var(--spacing-4xl) 0;
  background-color: var(--color-background);
  overflow: hidden;
}

.screenshot-gallery {
  display: flex;
  gap: var(--spacing-2xl);
  justify-content: center;
  align-items: center;
  padding: var(--spacing-xl) 0;
}

.screenshot-item {
  flex: 0 0 auto;
  width: 260px;
  position: relative;
  transition: transform var(--transition-base);
}

.screenshot-item img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.screenshot-item:hover img {
  box-shadow: var(--shadow-xl);
}

/* Side screenshots slightly smaller and tilted */
.screenshot-left {
  transform: rotate(-3deg) scale(0.92);
}

.screenshot-left:hover {
  transform: rotate(-1deg) scale(0.96);
}

.screenshot-center {
  transform: scale(1.04);
  z-index: 2;
}

.screenshot-center img {
  box-shadow: var(--shadow-xl);
}

.screenshot-center:hover {
  transform: scale(1.08);
}

.screenshot-right {
  transform: rotate(3deg) scale(0.92);
}

.screenshot-right:hover {
  transform: rotate(1deg) scale(0.96);
}

.screenshot-caption {
  text-align: center;
  margin-top: var(--spacing-md);
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about {
  padding: var(--spacing-4xl) 0;
  background-color: var(--color-background-alt);
}

.about-content {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(126, 105, 210, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--spacing-3xl) var(--spacing-2xl);
  position: relative;
}

.about-quote-mark {
  font-size: 6rem;
  line-height: 1;
  color: var(--color-primary-light);
  opacity: 0.3;
  position: absolute;
  top: 1rem;
  left: 2rem;
  font-family: Georgia, serif;
  pointer-events: none;
}

.about-content .section-title {
  position: relative;
  z-index: 1;
}

.about-content p {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   Download Section
   ========================================================================== */
.download {
  padding: var(--spacing-4xl) 0;
  background: var(--gradient-hero);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.download .section-title {
  color: var(--color-text-inverse);
  position: relative;
  z-index: 1;
}

.download .section-title::after {
  background: rgba(255, 255, 255, 0.5);
}

.download-subtitle {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2xl);
  position: relative;
  z-index: 1;
}

.download-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.download .btn-download {
  background-color: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--color-text-inverse);
  border-radius: var(--radius-lg);
}

.download .btn-download:hover {
  background-color: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.45);
  color: var(--color-text-inverse);
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.download .btn-download .btn-text small {
  color: rgba(255, 255, 255, 0.75);
}

.btn-store-icon {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background-color: var(--color-background-dark);
  color: var(--color-text-inverse);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand .logo {
  display: inline-flex;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-inverse);
}

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

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
}

.footer-links h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-inverse);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.4);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   Hero Stagger Animations
   ========================================================================== */
@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroScaleIn {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(30px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.hero-badge {
  animation: heroFadeIn 0.7s ease-out both;
  animation-delay: 0.1s;
}

.hero h1 {
  animation: heroFadeIn 0.7s ease-out both;
  animation-delay: 0.25s;
}

.hero-subtitle {
  animation: heroFadeIn 0.7s ease-out both;
  animation-delay: 0.4s;
}

.hero-actions {
  animation: heroFadeIn 0.7s ease-out both;
  animation-delay: 0.55s;
}

.hero-image {
  animation: heroScaleIn 0.8s ease-out both;
  animation-delay: 0.5s;
}

/* ==========================================================================
   Mobile Responsive Styles
   ========================================================================== */
@media (max-width: 992px) {
  .hero-container {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-2xl);
  }

  .hero-content {
    max-width: 600px;
    margin: 0 auto;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

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

  .hero-image img {
    max-width: 320px;
    transform: rotate(0deg);
  }

  .hero-image:hover img {
    transform: translateY(-4px);
  }

  .hero-image::before {
    width: 260px;
    height: 260px;
  }

  .screenshot-gallery {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
  }

  .screenshot-left,
  .screenshot-center,
  .screenshot-right {
    transform: none;
  }

  .screenshot-center {
    z-index: auto;
  }

  .screenshot-left:hover,
  .screenshot-center:hover,
  .screenshot-right:hover {
    transform: scale(1.03);
  }

  .screenshot-item {
    width: 260px;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
    --spacing-3xl: 3.5rem;
    --spacing-4xl: 5rem;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    display: none;
  }

  .nav-links.active {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--spacing-3xl) + 72px);
    padding-bottom: var(--spacing-2xl);
  }

  .hero-container {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-xl);
  }

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

  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
  }

  .hero-image img {
    max-width: 280px;
  }

  .hero-orb {
    filter: blur(60px);
  }

  .hero-orb-1 { width: 300px; height: 300px; }
  .hero-orb-2 { width: 250px; height: 250px; }
  .hero-orb-3 { width: 200px; height: 200px; }

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

  .btn-download {
    width: 100%;
    max-width: 280px;
  }

  .about-content {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }

  .about-quote-mark {
    font-size: 4rem;
    top: 0.5rem;
    left: 1rem;
  }
}

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

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

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

  .screenshot-item {
    width: 220px;
  }

  .lang-switcher {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 999;
    box-shadow: var(--shadow-lg);
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }

  .hero-image img {
    max-width: 240px;
  }

  .hero-orb {
    filter: blur(60px);
  }
}