/* Google Antigravity Design System */
:root {
  --palette-grey-0: #FFFFFF;
  --palette-grey-10: #F8F9FC;
  --palette-grey-20: #EFF2F7;
  --palette-grey-50: #E6EAF0;
  --palette-grey-100: #E1E6EC;
  --palette-grey-200: #CDD4DC;
  --palette-grey-300: #B2BBC5;
  --palette-grey-400: #B7BFD9;
  --palette-grey-800: #45474D;
  --palette-grey-900: #2F3034;
  --palette-grey-1000: #212226;
  --palette-grey-1100: #18191D;
  --palette-grey-1200: #121317;
  
  --palette-blue-600: #3279F9;
  
  --theme-surface-surface: var(--palette-grey-0);
  --theme-surface-on-surface: var(--palette-grey-1200);
  --theme-surface-on-surface-variant: var(--palette-grey-800);
  --theme-surface-surface-container: var(--palette-grey-10);
  --theme-surface-surface-container-high: var(--palette-grey-20);
  --theme-surface-surface-container-higher: var(--palette-grey-50);
  
  --theme-outline: var(--palette-grey-100);
  --theme-outline-variant: var(--palette-grey-50);
  
  --font-primary: 'Google Sans Flex', 'Outfit', sans-serif;
  --font-code: 'Google Sans Code', monospace;
  
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease-out;
  
  --page-margin: 24px;
  
  /* Layout */
  --shape-corner-xs: 4px;
  --shape-corner-sm: 8px;
  --shape-corner-md: 16px;
  --shape-corner-lg: 24px;
  --shape-corner-xl: 36px;
}

@media (min-width: 768px) {
  :root {
    --page-margin: 48px;
  }
}

@media (min-width: 1024px) {
  :root {
    --page-margin: 72px;
  }
}

/* Reset and Global Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background-color: var(--theme-surface-surface-container);
  color: var(--theme-surface-on-surface);
  overflow-x: hidden;
  line-height: 1.5;
  font-weight: 400;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--theme-surface-surface-container);
}
::-webkit-scrollbar-thumb {
  background: var(--palette-grey-200);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--palette-blue-600);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--page-margin);
}

/* Typography */
.heading-1 {
  font-size: 48px;
  line-height: 1.15;
  letter-spacing: -1.2px;
  font-weight: 450;
  font-variation-settings: "wdth" 100, "opsz" 72;
}
@media (min-width: 1024px) {
  .heading-1 { font-size: 72px; letter-spacing: -1.44px; }
}

.heading-2 {
  font-size: 32px;
  line-height: 1.2;
  letter-spacing: -0.8px;
  font-weight: 450;
}
@media (min-width: 1024px) {
  .heading-2 { font-size: 48px; }
}

.heading-4 {
  font-size: 24px;
  font-weight: 450;
  margin-bottom: 12px;
}
.heading-5 {
  font-size: 18px;
  font-weight: 450;
}

.body-text {
  font-size: 18px;
  line-height: 1.6;
  color: var(--theme-surface-on-surface-variant);
}
.body-text-sm {
  font-size: 15px;
  line-height: 1.6;
  color: var(--theme-surface-on-surface-variant);
}

.sub-title {
  color: var(--palette-grey-800);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 9999px;
  font-family: var(--font-primary);
  font-weight: 500;
  font-size: 16px;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-sm {
  padding: 10px 24px;
  font-size: 15px;
}

.btn-primary {
  background: var(--theme-surface-on-surface);
  color: var(--theme-surface-surface);
  border: 1px solid transparent;
}
.btn-primary:hover {
  background: var(--palette-grey-900);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(18, 19, 23, 0.15);
}

.btn-secondary {
  background: var(--theme-surface-surface);
  color: var(--theme-surface-on-surface);
  border: 1px solid var(--theme-outline);
}
.btn-secondary:hover {
  background: var(--palette-grey-10);
  border-color: var(--palette-grey-200);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.03);
}

.btn-block {
  width: 100%;
}

/* Symbols */
.symbol {
  font-family: 'Google Symbols';
  font-weight: normal;
  font-style: normal;
  display: inline-block;
  vertical-align: middle;
  line-height: 1;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--theme-outline-variant);
  padding: 18px 0;
  transition: var(--transition-smooth);
}

.navbar.scrolled {
  padding: 14px 0;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  border-bottom-color: var(--theme-outline);
}

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

.logo {
  font-size: 20px;
  font-weight: 600;
  color: var(--theme-surface-on-surface);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.02em;
}
.logo-icon {
  background: var(--theme-surface-on-surface);
  color: var(--theme-surface-surface);
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-icon .symbol {
  font-size: 18px;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 32px;
}

.nav-links a:not(.btn) {
  color: var(--theme-surface-on-surface-variant);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition-fast);
}

.nav-links a:not(.btn):hover,
.nav-links a.active:not(.btn) {
  color: var(--palette-blue-600);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}
.menu-toggle .bar {
  width: 24px;
  height: 2px;
  background-color: var(--theme-surface-on-surface);
  transition: var(--transition-smooth);
  border-radius: 2px;
}

/* Section Backgrounds */
.section-bg-light { background-color: var(--theme-surface-surface-container); }
.section-bg-white { background-color: var(--theme-surface-surface); }

/* Hero Section */
.hero-section {
  position: relative;
  padding: 160px 0 100px 0;
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-size: 40px 40px;
  background-image: linear-gradient(to right, var(--palette-grey-50) 1px, transparent 1px), linear-gradient(to bottom, var(--palette-grey-50) 1px, transparent 1px);
  mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 80%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 80%);
  z-index: 0;
  opacity: 0.8;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 1;
}
@media (min-width: 1024px) {
  .hero-container {
    grid-template-columns: 1.15fr 1fr;
  }
}

.badge {
  display: inline-flex;
  align-items: center;
  background: var(--theme-surface-surface);
  border: 1px solid var(--theme-outline);
  color: var(--theme-surface-on-surface-variant);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: 30px;
  margin-bottom: 24px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.03);
}

.hero-content h1 {
  margin-bottom: 24px;
}
.hero-content p {
  margin-bottom: 40px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-trust {
  display: flex;
  gap: 24px;
  color: var(--palette-grey-800);
  font-size: 14px;
  font-weight: 500;
}
.hero-trust span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.hero-trust .symbol {
  font-size: 18px;
}

.hero-image-container {
  position: relative;
  display: flex;
  justify-content: center;
}
.image-glass-wrapper {
  background: var(--theme-surface-surface);
  border: 1px solid var(--theme-outline);
  border-radius: var(--shape-corner-lg);
  padding: 16px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.08);
  transform: perspective(1200px) rotateY(-5deg) rotateX(2deg);
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  width: 100%;
  max-width: 500px;
}
.image-glass-wrapper:hover {
  transform: perspective(1200px) rotateY(0deg) rotateX(0deg) translateY(-8px);
  box-shadow: 0 32px 80px rgba(0,0,0,0.12);
}
.hero-image {
  width: 100%;
  border-radius: var(--shape-corner-md);
  display: block;
}

/* Services / Models */
.services-section {
  padding: 120px 0;
  border-top: 1px solid var(--theme-outline-variant);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 64px auto;
}
.section-header h2 { margin-bottom: 16px; }

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 768px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}

.services-grid.cols-3 {
  grid-template-columns: 1fr;
}
@media (min-width: 1024px) {
  .services-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
}

.service-card {
  background: var(--theme-surface-surface);
  border: 1px solid var(--theme-outline);
  padding: 32px;
  border-radius: var(--shape-corner-lg);
  transition: var(--transition-smooth);
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--palette-grey-200);
  box-shadow: 0 16px 40px rgba(0,0,0,0.06);
}

.icon-box {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}
.icon-box .symbol {
  font-size: 24px;
}

/* Subtle icon colors */
.bg-purple { background: #F3E8FF; color: #7E22CE; }
.bg-blue { background: #E0F2FE; color: #0369A1; }
.bg-pink { background: #FCE7F3; color: #BE185D; }
.bg-cyan { background: #CCFBF1; color: #0F766E; }

.text-blue { color: #0369A1; }
.text-purple { color: #7E22CE; }
.text-pink { color: #BE185D; }

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.card-header .heading-5 { margin: 0; }
.card-header .symbol { font-size: 28px; }

/* Prompt Tips Section */
.outline-borders {
  border-top: 1px solid var(--theme-outline-variant);
  border-bottom: 1px solid var(--theme-outline-variant);
}

/* Demo Section / Terminal */
.demo-section {
  padding: 120px 0;
}

.terminal-wrapper {
  max-width: 860px;
  margin: 0 auto;
  background: var(--palette-grey-1100);
  border: 1px solid var(--palette-grey-1000);
  border-radius: var(--shape-corner-md);
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0,0,0,0.2);
}

.terminal-header {
  background: var(--palette-grey-1200);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--palette-grey-1000);
  position: relative;
}

.terminal-buttons {
  display: flex;
  gap: 8px;
}
.terminal-buttons span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}
.btn-close { background-color: #FF5F56; border: 1px solid #E0443E; }
.btn-minimize { background-color: #FFBD2E; border: 1px solid #DEA123; }
.btn-expand { background-color: #27C93F; border: 1px solid #1AAB29; }

.terminal-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-code);
  font-size: 13px;
  color: var(--palette-grey-400);
  letter-spacing: 0.5px;
}

.terminal-body {
  padding: 24px;
  min-height: 320px;
  max-height: 400px;
  overflow-y: auto;
  font-family: var(--font-code);
  font-size: 14px;
  line-height: 1.6;
  color: var(--palette-grey-100);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.terminal-line { word-break: break-word; }
.terminal-line.system { color: var(--palette-blue-600); }
.terminal-line.user { color: #00F5D4; }
.terminal-line.agent { 
  color: var(--palette-grey-0);
  border-left: 2px solid var(--palette-blue-600);
  padding-left: 14px;
}
.terminal-line.agent strong {
  color: var(--palette-blue-600);
}

.terminal-controls {
  padding: 20px;
  background: var(--palette-grey-1200);
  border-top: 1px solid var(--palette-grey-1000);
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.prompt-btn {
  background: transparent;
  border: 1px solid var(--palette-grey-800);
  color: var(--palette-grey-200);
  font-family: var(--font-primary);
  padding: 10px 18px;
  border-radius: 9999px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.prompt-btn:hover {
  background: var(--palette-grey-900);
  color: var(--palette-grey-0);
  border-color: var(--palette-grey-400);
}
.prompt-btn.active {
  background: var(--palette-blue-600);
  color: white;
  border-color: var(--palette-blue-600);
}

/* Contact Section */
.contact-section {
  padding: 120px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 64px;
  align-items: center;
}
@media (min-width: 1024px) {
  .contact-grid { grid-template-columns: 1fr 1.1fr; }
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.detail-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.detail-item .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--theme-surface-surface);
  border: 1px solid var(--theme-outline);
  color: var(--theme-surface-on-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.contact-form-wrapper {
  background: var(--theme-surface-surface);
  border: 1px solid var(--theme-outline);
  border-radius: var(--shape-corner-xl);
  padding: 48px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.04);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-group label {
  font-size: 14px;
  font-weight: 500;
  color: var(--theme-surface-on-surface-variant);
}

.form-group input,
.form-group textarea {
  background: var(--theme-surface-surface-container);
  border: 1px solid var(--theme-outline);
  border-radius: 12px;
  padding: 16px;
  font-family: var(--font-primary);
  font-size: 15px;
  color: var(--theme-surface-on-surface);
  transition: var(--transition-fast);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  background: var(--theme-surface-surface);
  border-color: var(--palette-blue-600);
  box-shadow: 0 0 0 4px rgba(50, 121, 249, 0.1);
}

.form-response {
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  margin-top: 8px;
}
.form-response.success { color: #0F766E; }
.form-response.error { color: #BE185D; }

/* Footer */
.footer {
  background-color: var(--theme-surface-surface);
  border-top: 1px solid var(--theme-outline);
  padding: 80px 0 32px 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  margin-bottom: 64px;
}
@media (min-width: 768px) {
  .footer-top { grid-template-columns: 2fr 1fr 1fr; }
}

.footer-brand {
  max-width: 320px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links ul a {
  color: var(--theme-surface-on-surface-variant);
  font-size: 15px;
  transition: var(--transition-fast);
}
.footer-links ul a:hover {
  color: var(--palette-blue-600);
}

.social-icons {
  display: flex;
  gap: 12px;
}
.social-icons a {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--theme-surface-surface-container);
  border: 1px solid var(--theme-outline);
  color: var(--theme-surface-on-surface-variant);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  transition: var(--transition-smooth);
}
.social-icons a:hover {
  background: var(--palette-grey-1000);
  color: white;
  border-color: var(--palette-grey-1000);
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.footer-bottom {
  border-top: 1px solid var(--theme-outline-variant);
  padding-top: 32px;
  text-align: center;
  color: var(--theme-surface-on-surface-variant);
}

/* Animations Trigger */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.animate-on-scroll.appear {
  opacity: 1;
  transform: translateY(0);
}

/* Mobile Responsive */
@media (max-width: 1024px) {
  .hero-container {
    text-align: center;
  }
  .hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .hero-content p {
    max-width: 100%;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-trust {
    justify-content: center;
  }
}

@media (max-width: 767px) {
  .menu-toggle { display: flex; }
  
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 32px;
    gap: 24px;
    border-bottom: 1px solid var(--theme-outline);
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  
  .nav-links li {
    width: 100%;
    text-align: center;
  }
  
  .menu-toggle.active .bar:nth-child(2) { opacity: 0; }
  .menu-toggle.active .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle.active .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  
  .hero-section { padding: 120px 0 80px 0; }
  
  .terminal-wrapper {
    margin: 0 16px;
  }
  
  .contact-form-wrapper {
    padding: 24px;
  }
}