/* ===========================
   Design Tokens
   =========================== */
:root {
  --color-bg: #0A0A0B;
  --color-surface: #111113;
  --color-primary: #E85D04;
  --color-secondary: #FAA307;
  --color-accent: #FFBA08;
  --color-text: #F5F5F5;
  --color-text-muted: #9CA3AF;
  --color-glass-bg: rgba(255, 255, 255, 0.06);
  --color-glass-border: rgba(255, 255, 255, 0.1);
  --color-glass-fallback: rgba(20, 20, 25, 0.9);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --spacing-2xl: 8rem;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition-fast: 200ms ease;
  --transition-base: 400ms ease;
  --transition-slow: 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===========================
   Animated Background Orbs
   =========================== */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background:
    radial-gradient(ellipse 600px 600px at 20% 20%, rgba(232, 93, 4, 0.12), transparent),
    radial-gradient(ellipse 500px 500px at 80% 50%, rgba(250, 163, 7, 0.08), transparent),
    radial-gradient(ellipse 400px 400px at 50% 80%, rgba(255, 186, 8, 0.06), transparent);
  animation: ambientDrift 20s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes ambientDrift {
  0% {
    background:
      radial-gradient(ellipse 600px 600px at 20% 20%, rgba(232, 93, 4, 0.12), transparent),
      radial-gradient(ellipse 500px 500px at 80% 50%, rgba(250, 163, 7, 0.08), transparent),
      radial-gradient(ellipse 400px 400px at 50% 80%, rgba(255, 186, 8, 0.06), transparent);
  }
  33% {
    background:
      radial-gradient(ellipse 700px 500px at 40% 30%, rgba(232, 93, 4, 0.10), transparent),
      radial-gradient(ellipse 600px 600px at 70% 70%, rgba(250, 163, 7, 0.10), transparent),
      radial-gradient(ellipse 500px 400px at 20% 60%, rgba(255, 186, 8, 0.07), transparent);
  }
  66% {
    background:
      radial-gradient(ellipse 500px 700px at 60% 15%, rgba(232, 93, 4, 0.08), transparent),
      radial-gradient(ellipse 600px 500px at 30% 60%, rgba(250, 163, 7, 0.12), transparent),
      radial-gradient(ellipse 400px 500px at 80% 80%, rgba(255, 186, 8, 0.06), transparent);
  }
  100% {
    background:
      radial-gradient(ellipse 600px 600px at 75% 25%, rgba(232, 93, 4, 0.14), transparent),
      radial-gradient(ellipse 500px 500px at 25% 75%, rgba(250, 163, 7, 0.09), transparent),
      radial-gradient(ellipse 500px 400px at 60% 50%, rgba(255, 186, 8, 0.08), transparent);
  }
}

/* ===========================
   Container
   =========================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ===========================
   Glass Utility
   =========================== */
.glass {
  background: var(--color-glass-fallback);
  background: var(--color-glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
}

/* ===========================
   Scroll Reveal Animations
   =========================== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================
   Navigation
   =========================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: background var(--transition-fast), backdrop-filter var(--transition-fast);
}

.nav.scrolled {
  background: rgba(10, 10, 11, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-glass-border);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
  height: 64px;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

.nav-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===========================
   Hero
   =========================== */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  text-align: center;
  padding: var(--spacing-lg) var(--spacing-md);
}

.hero-content {
  max-width: 800px;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-muted) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  font-weight: 300;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-md);
  color: var(--color-text-muted);
  animation: bounce 2s ease-in-out infinite;
  text-decoration: none;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ===========================
   Sections
   =========================== */
.section {
  padding: var(--spacing-xl) 0;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

/* ===========================
   App Showcase
   =========================== */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--spacing-md);
}

.app-card {
  padding: var(--spacing-md);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.app-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.18);
}

.app-card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.app-icon-wrapper {
  position: relative;
  flex-shrink: 0;
}

.app-icon {
  width: 96px;
  height: 96px;
  border-radius: var(--radius-lg);
  display: block;
}

.app-icon-wrapper::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: calc(var(--radius-lg) + 6px);
  background: radial-gradient(circle, rgba(232, 93, 4, 0.35), transparent 70%);
  animation: iconGlow 3s ease-in-out infinite alternate;
  z-index: -1;
}

@keyframes iconGlow {
  0% { opacity: 0.5; transform: scale(1); }
  100% { opacity: 1; transform: scale(1.05); }
}

.app-name {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.app-tagline {
  color: var(--color-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
}

.app-description {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: var(--spacing-sm);
}

.app-badges {
  display: flex;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-secondary);
  border: 1px solid rgba(250, 163, 7, 0.25);
  border-radius: 999px;
  background: rgba(250, 163, 7, 0.08);
}

.app-link {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.app-link:hover {
  color: var(--color-accent);
}

/* ===========================
   Feature Grid
   =========================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-md);
}

.feature-card {
  padding: var(--spacing-md);
  text-align: center;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.18);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  line-height: 1;
}

.feature-name {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.01em;
}

.feature-desc {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* Staggered reveal delays for feature cards */
.feature-grid .reveal:nth-child(1) { transition-delay: 0ms; }
.feature-grid .reveal:nth-child(2) { transition-delay: 100ms; }
.feature-grid .reveal:nth-child(3) { transition-delay: 200ms; }
.feature-grid .reveal:nth-child(4) { transition-delay: 300ms; }
.feature-grid .reveal:nth-child(5) { transition-delay: 400ms; }

/* ===========================
   About
   =========================== */
.section-about {
  padding-bottom: var(--spacing-2xl);
}

.about-content {
  max-width: 640px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  text-align: center;
}

.about-content .section-title {
  margin-bottom: var(--spacing-md);
}

.about-text {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
}

.about-teaser {
  color: var(--color-secondary);
  font-weight: 600;
  font-size: 1rem;
}

/* ===========================
   Footer
   =========================== */
.footer {
  border-top: 1px solid var(--color-glass-border);
  padding: var(--spacing-md) 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.footer-copy {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}

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

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.8125rem;
  transition: color var(--transition-fast);
}

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

/* ===========================
   Responsive — Mobile
   =========================== */
@media (max-width: 767px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100vh;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    background: rgba(10, 10, 11, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transform: translateX(100%);
    transition: transform var(--transition-base);
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1.5rem;
    font-weight: 600;
  }

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

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

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ===========================
   Responsive — Tablet
   =========================== */
@media (min-width: 768px) and (max-width: 1023px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===========================
   Responsive — Desktop
   =========================== */
@media (min-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===========================
   Selection & Focus
   =========================== */
::selection {
  background: rgba(232, 93, 4, 0.3);
  color: var(--color-text);
}

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