/* ==========================================================================
   Material 3 Expressive (Jetpack Compose Style) - Compressor Website
   ========================================================================== */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* M3 Palette & Tokens */
:root {
  /* Light Theme (Material 3 Dynamic Style) */
  --md-sys-color-primary: #2B5F7F;
  --md-sys-color-on-primary: #FFFFFF;
  --md-sys-color-primary-container: #D2E5F4;
  --md-sys-color-on-primary-container: #001D32;
  --md-sys-color-secondary: #4F606E;
  --md-sys-color-on-secondary: #FFFFFF;
  --md-sys-color-secondary-container: #D2E4F5;
  --md-sys-color-on-secondary-container: #0C1D2A;
  --md-sys-color-background: #F7F9FF;
  --md-sys-color-on-background: #1A1C1E;
  --md-sys-color-surface: #F7F9FF;
  --md-sys-color-surface-container: #FFFFFF;
  --md-sys-color-on-surface: #1A1C1E;
  --md-sys-color-on-surface-variant: #43474E;
  --md-sys-color-outline: #73777F;
  --md-sys-color-outline-variant: #C3C6CF;
  
  --m3-transition-duration: 0.25s;
  --m3-transition-easing: cubic-bezier(0.2, 0, 0, 1);
  --md-sys-color-surface-rgb: 247, 249, 255;
}

[data-theme="dark"] {
  /* Dark Theme */
  --md-sys-color-primary: #A2C9E8;
  --md-sys-color-on-primary: #003351;
  --md-sys-color-primary-container: #0D4868;
  --md-sys-color-on-primary-container: #D2E5F4;
  --md-sys-color-secondary: #B6C8D8;
  --md-sys-color-on-secondary: #21323F;
  --md-sys-color-secondary-container: #374856;
  --md-sys-color-on-secondary-container: #D2E4F5;
  --md-sys-color-background: #0E141B;
  --md-sys-color-on-background: #E1E2EC;
  --md-sys-color-surface: #0E141B;
  --md-sys-color-surface-container: #111318;
  --md-sys-color-on-surface: #E1E2EC;
  --md-sys-color-on-surface-variant: #C3C6CF;
  --md-sys-color-outline: #8D9199;
  --md-sys-color-outline-variant: #43474E;
  
  --md-sys-color-surface-rgb: 14, 20, 27;
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Inter', sans-serif;
  background-color: var(--md-sys-color-background);
  color: var(--md-sys-color-on-background);
  transition: background-color var(--m3-transition-duration) var(--m3-transition-easing),
              color var(--m3-transition-duration) var(--m3-transition-easing);
}

body {
  overflow-x: hidden;
}

/* Jetpack Compose Typography Mappings */
.m3-display-large {
  font-family: 'Outfit', sans-serif;
  font-size: 57px;
  font-weight: 700;
  line-height: 64px;
  letter-spacing: -1px;
}

.m3-headline-large {
  font-family: 'Outfit', sans-serif;
  font-size: 32px;
  font-weight: 700;
  line-height: 40px;
}

.m3-title-large {
  font-family: 'Outfit', sans-serif;
  font-size: 22px;
  font-weight: 600;
  line-height: 28px;
}

.m3-title-medium {
  font-family: 'Outfit', sans-serif;
  font-size: 16px;
  font-weight: 600;
  line-height: 24px;
}

.m3-body-large {
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
  color: var(--md-sys-color-on-surface-variant);
}

.m3-body-medium {
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
  color: var(--md-sys-color-on-surface-variant);
}

.m3-label-large {
  font-family: 'Outfit', sans-serif;
  font-size: 14px;
  font-weight: 600;
  line-height: 20px;
  letter-spacing: 0.1px;
}

/* Layout Elements */
section {
  padding: 80px 24px;
  max-width: 1100px;
  margin: 0 auto;
}

/* Floating Pill Navigation */
.nav-container {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 800px;
  z-index: 1000;
  transition: width 0.3s var(--m3-transition-easing), top 0.3s var(--m3-transition-easing), max-width 0.3s var(--m3-transition-easing);
}

.nav-bar {
  background-color: rgba(var(--md-sys-color-surface-rgb), 0.8);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 100px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 24px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
  transition: all var(--m3-transition-duration) var(--m3-transition-easing);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--md-sys-color-on-background);
}

.nav-logo img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--md-sys-color-on-background);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 100px;
  transition: all var(--m3-transition-duration) var(--m3-transition-easing);
}

.nav-links a:hover {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.nav-links a.active {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-toggle-btn {
  background: none;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--md-sys-color-on-background);
  transition: all var(--m3-transition-duration) var(--m3-transition-easing);
}

.theme-toggle-btn:hover {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.theme-toggle-btn svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
  display: block;
}

/* Nav Bar Scroll State */
.nav-container.scrolled {
  width: 100%;
  max-width: 100%;
  top: 0;
}

.nav-container.scrolled .nav-bar {
  border-radius: 0;
  border-top: none;
  border-left: none;
  border-right: none;
  padding: 14px 40px;
  background-color: rgba(var(--md-sys-color-surface-rgb), 0.9);
}

.menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--md-sys-color-on-background);
  cursor: pointer;
}

/* M3 Compose Button Designs */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 15px;
  padding: 14px 32px;
  border-radius: 100px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--m3-transition-duration) var(--m3-transition-easing);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-primary);
  border: 1px solid var(--md-sys-color-outline-variant);
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 15px;
  padding: 14px 20px;
  border-radius: 100px;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--m3-transition-duration) var(--m3-transition-easing);
}

.btn-secondary:hover {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.btn-group {
  display: inline-flex;
  gap: 8px;
  align-items: center;
}

.btn-group .btn-secondary {
  width: 48px;
  height: 48px;
  padding: 0;
}

.btn-group .btn-secondary svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
  display: block;
}

/* Hero Section */
.hero-section {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 50px;
  min-height: 85vh;
  padding-top: 120px;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}

.hero-badge {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hero-title span {
  color: var(--md-sys-color-primary);
}

/* Phone Mockup */
.device-container {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.device-mockup {
  width: 270px;
  height: auto;
  aspect-ratio: 1344 / 2992;
  background-color: #000;
  border: 8px solid #2d2e30;
  border-radius: 28px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
  position: relative;
  overflow: hidden;
  transition: transform 0.4s var(--m3-transition-easing);
}

.device-mockup:hover {
  transform: translateY(-6px);
}

.device-screen {
  width: 100%;
  height: 100%;
  border-radius: 20px;
  overflow: hidden;
  background-color: var(--md-sys-color-background);
  position: relative;
}

.device-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.device-camera {
  display: none;
}

/* Features Rows */
.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 50px auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.section-tag {
  color: var(--md-sys-color-primary);
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
  margin-bottom: 80px;
}

.feature-block:nth-child(even) {
  direction: rtl;
}

.feature-block:nth-child(even) .feature-content {
  direction: ltr;
}

.feature-block:last-child {
  margin-bottom: 0;
}

.feature-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-icon-container {
  width: 48px;
  height: 48px;
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon-container svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

.feature-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 6px;
}

.feature-bullets li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
}

.feature-bullets li svg {
  width: 18px;
  height: 18px;
  fill: var(--md-sys-color-primary);
  flex-shrink: 0;
}

/* Call to Action Capsule */
.cta-banner {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  border-radius: 28px;
  padding: 60px 40px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.01);
}

.cta-title {
  color: var(--md-sys-color-on-primary-container);
}

/* FAQ M3 Accordions */
.faq-container {
  max-width: 750px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 16px;
  overflow: hidden;
  transition: all var(--m3-transition-duration) var(--m3-transition-easing);
}

.faq-item.active {
  border-color: var(--md-sys-color-primary);
}

.faq-header {
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: var(--md-sys-color-primary);
  transition: transform var(--m3-transition-duration) var(--m3-transition-easing);
}

.faq-toggle svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

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

.faq-body {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height var(--m3-transition-duration) var(--m3-transition-easing),
              opacity var(--m3-transition-duration) var(--m3-transition-easing);
}

.faq-answer {
  padding: 0 24px 20px 24px;
}

/* --------------------------------------------------------------------------
   Jetpack Compose Native Android App Simulator (Download Page)
   -------------------------------------------------------------------------- */
.download-page {
  padding-top: 140px;
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.android-screen-simulator {
  width: 100%;
  max-width: 460px;
  background-color: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 36px;
  padding: 32px 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 40px;
}

/* App Header block inside phone simulator */
.app-header-sim {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.app-icon-sim {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background-color: var(--md-sys-color-primary-container);
  display: flex;
  align-items: center;
  justify-content: center;
}

.app-icon-sim img {
  width: 100%;
  height: 100%;
  border-radius: 14px;
  object-fit: cover;
}

.app-title-sim {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* M3 Compose List Items Stack */
.m3-compose-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.m3-list-item {
  display: flex;
  align-items: center;
  background-color: var(--md-sys-color-surface);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 16px;
  padding: 16px;
  text-decoration: none;
  color: inherit;
  transition: all var(--m3-transition-duration) var(--m3-transition-easing);
  cursor: pointer;
}

.m3-list-item:hover {
  background-color: var(--md-sys-color-primary-container);
  border-color: var(--md-sys-color-primary);
  transform: translateY(-1px);
}

.m3-list-item-leading {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 14px;
  flex-shrink: 0;
  transition: all var(--m3-transition-duration) var(--m3-transition-easing);
}

.m3-list-item:hover .m3-list-item-leading {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.m3-list-item-leading svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
  display: block;
}

.m3-list-item-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.m3-list-item-trailing {
  color: var(--md-sys-color-primary);
  margin-left: 10px;
}

.m3-list-item-trailing svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
  display: block;
  transition: transform var(--m3-transition-duration) var(--m3-transition-easing);
}

.m3-list-item:hover .m3-list-item-trailing svg {
  transform: translateX(4px);
}

/* Footer styling */
footer {
  background-color: var(--md-sys-color-surface-container);
  border-top: 1px solid var(--md-sys-color-outline-variant);
  padding: 60px 24px 30px 24px;
}

.footer-content {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 30px;
  margin-bottom: 40px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.footer-nav {
  display: flex;
  gap: 20px;
  list-style: none;
}

.footer-nav a {
  text-decoration: none;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--m3-transition-duration) var(--m3-transition-easing);
}

.footer-nav a:hover {
  color: var(--md-sys-color-primary);
}

.footer-bottom {
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-bottom-links {
  display: flex;
  gap: 16px;
}

.footer-bottom-links a {
  text-decoration: none;
  color: inherit;
  transition: color var(--m3-transition-duration) var(--m3-transition-easing);
}

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

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s var(--m3-transition-easing) forwards;
}

/* Mobile responsive layout */
@media (max-width: 1024px) {
  .m3-display-large {
    font-size: 48px;
    line-height: 54px;
  }
}

@media (max-width: 768px) {
  section {
    padding: 50px 20px;
  }
  
  .hero-section {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 30px;
    padding-top: 100px;
  }
  
  .hero-content {
    align-items: center;
  }
  
  .m3-display-large {
    font-size: 38px;
    line-height: 44px;
  }
  
  .btn-group {
    width: 100%;
    justify-content: center;
  }
  
  .feature-block {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-bottom: 50px;
  }
  
  .feature-block:nth-child(even) {
    direction: ltr;
  }
  
  .android-screen-simulator {
    padding: 24px 16px;
  }
  
  .menu-btn {
    display: block;
  }
  
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    background-color: var(--md-sys-color-surface-container);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: 20px;
    flex-direction: column;
    padding: 12px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
  }
  
  .nav-links.open {
    display: flex;
  }
  
  .nav-links a {
    width: 100%;
    text-align: center;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-nav {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}