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

:root {
  --bg: #FAFAFA;
  --bg-card: #FFFFFF;
  --text-primary: #111111;
  --text-secondary: #555555;
  --text-muted: #999999;
  --border: #E5E5E5;
  --shadow: 0 2px 20px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 40px rgba(0,0,0,0.12);
  --radius: 20px;
  --radius-sm: 12px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ============================
   Navigation
   ============================ */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.3px;
  color: var(--text-primary);
}

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

.nav-links a {
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

/* ============================
   Language Toggle
   ============================ */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 5px 12px;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.2s;
}

.lang-toggle:hover {
  border-color: #bbb;
}

.lang-option {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0 2px;
  transition: color 0.2s;
  cursor: pointer;
}

.lang-option.active {
  color: var(--text-primary);
  font-weight: 600;
}

.lang-divider {
  font-size: 11px;
  color: var(--border);
  pointer-events: none;
}

/* ============================
   Hero
   ============================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 32px 80px;
  position: relative;
  overflow: hidden;
}

.hero-visual {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #FF6B35 0%, transparent 70%);
  top: -100px;
  right: -100px;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #FFB703 0%, transparent 70%);
  bottom: 0;
  left: -80px;
}

.orb-3 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, #2EC4B6 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 680px;
}

.hero-eyebrow {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(48px, 8vw, 80px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 18px;
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
}

.btn-primary {
  display: inline-block;
  padding: 14px 32px;
  background: var(--text-primary);
  color: #fff;
  text-decoration: none;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.2px;
  transition: opacity 0.2s, transform 0.2s;
}

.btn-primary:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

/* ============================
   Apps Section
   ============================ */
.apps-section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 32px 120px;
}

.section-header {
  margin-bottom: 80px;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.section-header p {
  font-size: 16px;
  color: var(--text-secondary);
}

/* App Block */
.app-block {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 120px;
  padding-bottom: 120px;
  border-bottom: 1px solid var(--border);
}

.app-block:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.app-block.reverse {
  grid-template-columns: 1.2fr 1fr;
}

.app-block.reverse .app-info {
  order: 2;
}

.app-block.reverse .app-screenshots {
  order: 1;
}

/* App Meta */
.app-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.app-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  box-shadow: var(--shadow);
  flex-shrink: 0;
}

.app-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tag-color);
  background: color-mix(in srgb, var(--tag-color) 12%, transparent);
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 6px;
}

.app-name {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.app-platform {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.app-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 28px;
}

/* Feature List */
.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.feature-icon {
  font-size: 20px;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 1px;
}

.feature-list strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.feature-list span {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* App Actions */
.app-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.btn-learn-more {
  display: inline-block;
  padding: 10px 22px;
  border: 1.5px solid var(--text-primary);
  color: var(--text-primary);
  text-decoration: none;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.1px;
  transition: background 0.2s, color 0.2s;
}

.btn-learn-more:hover {
  background: var(--text-primary);
  color: #fff;
}


/* Screenshots */
.app-screenshots {
  overflow: hidden;
}

.screenshots-scroll {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 12px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.screenshots-scroll::-webkit-scrollbar {
  height: 4px;
}

.screenshots-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.screenshots-scroll::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

.phone-frame {
  flex-shrink: 0;
  width: 200px;
  border-radius: 28px;
  overflow: hidden;
  background: #1a1a1a;
  box-shadow: 0 4px 24px rgba(0,0,0,0.15), 0 0 0 1px rgba(255,255,255,0.06);
  scroll-snap-align: start;
  transition: transform 0.3s, box-shadow 0.3s;
}

.phone-frame:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}

.phone-frame img {
  width: 100%;
  height: auto;
  display: block;
}

.phone-frame.wide {
  width: 100%;
  max-width: 480px;
  border-radius: 20px;
  background: #fff;
}

.phone-frame.tall {
  width: 260px;
  border-radius: 32px;
  background: #1a1a1a;
}

/* QR Code */
.qr-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.qr-code {
  width: 64px;
  height: 64px;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: block;
}

.qr-label {
  font-size: 12px;
  color: var(--text-muted);
}

/* ============================
   About Section
   ============================ */
.about-section {
  background: var(--text-primary);
  color: #fff;
  padding: 100px 32px;
}

.about-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text h2 {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.about-text p {
  font-size: 16px;
  color: rgba(255,255,255,0.65);
  line-height: 1.75;
  margin-bottom: 14px;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-size: 56px;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}

.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.45);
  margin-top: 6px;
}

/* ============================
   Footer
   ============================ */
footer {
  padding: 32px;
  text-align: center;
  background: var(--text-primary);
  border-top: 1px solid rgba(255,255,255,0.08);
}

footer p {
  font-size: 13px;
  color: rgba(255,255,255,0.3);
}

/* ============================
   Responsive
   ============================ */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero {
    padding: 100px 24px 60px;
  }

  .hero-title {
    font-size: 48px;
  }

  .hero-sub {
    font-size: 16px;
  }

  .apps-section {
    padding: 60px 24px 80px;
  }

  .section-header {
    margin-bottom: 48px;
  }

  .app-block,
  .app-block.reverse {
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 80px;
    padding-bottom: 80px;
  }

  .app-block.reverse .app-info {
    order: 1;
  }

  .app-block.reverse .app-screenshots {
    order: 2;
  }

  .app-name {
    font-size: 24px;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-stats {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 24px;
  }

  .stat-num {
    font-size: 40px;
  }
}