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

:root {
  --bg: #F7F4EF;
  --bg-dark: #0D3B3E;
  --fg: #0D3B3E;
  --fg-light: #ffffff;
  --accent: #E8A849;
  --accent-dim: #C48A2E;
  --muted: #6B8F8F;
  --surface: #ffffff;
  --border: rgba(13, 59, 62, 0.12);
  --radius: 16px;
  --radius-sm: 8px;
  --font-display: 'Sora', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* === NAV === */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 244, 239, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 40px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.5px;
}

.nav-tag {
  font-size: 13px;
  color: var(--muted);
  font-weight: 400;
}

/* === HERO === */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 40px 60px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-kicker {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-dim);
  margin-bottom: 20px;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(36px, 4vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  color: var(--fg);
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 18px;
  color: var(--muted);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 32px;
}

.hero-devices {
  display: flex;
  gap: 10px;
}

.badge {
  display: inline-block;
  padding: 6px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--fg);
}

/* === HERO PHONE === */
.hero-visual {
  display: flex;
  justify-content: center;
}

.phone-frame {
  width: 280px;
  background: var(--fg);
  border-radius: 40px;
  padding: 12px;
  box-shadow: 0 32px 80px rgba(13, 59, 62, 0.18), 0 8px 24px rgba(13, 59, 62, 0.1);
}

.phone-screen {
  background: #1A5558;
  border-radius: 30px;
  padding: 24px 20px;
  height: 380px;
  display: flex;
  flex-direction: column;
}

.phone-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.phone-avatar {
  width: 28px;
  height: 28px;
  background: var(--accent);
  border-radius: 50%;
}

.phone-name {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: white;
}

.phone-chat {
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: hidden;
}

.chat-bubble {
  border-radius: 16px;
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.5;
  max-width: 90%;
}

.chat-bubble.user {
  background: var(--accent);
  color: var(--fg);
  align-self: flex-end;
}

.chat-bubble.gumo {
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.9);
  align-self: flex-start;
}

.chat-bubble.cities {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 14px;
}

.chat-bubble.cities span {
  background: rgba(232, 168, 73, 0.25);
  color: var(--accent);
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
}

/* === FEATURES === */
.features {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 40px;
  border-top: 1px solid var(--border);
}

.features-header {
  text-align: center;
  margin-bottom: 60px;
}

.features-header h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.features-header p {
  font-size: 18px;
  color: var(--muted);
}

.features-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 24px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.3s;
}

.feature-card:hover::before { opacity: 1; }

.feature-number {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.feature-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 12px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin-bottom: 16px;
  line-height: 1.3;
}

.feature-card p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.7;
}

.feature-card--large {
  background: var(--fg);
  color: white;
}

.feature-card--large .feature-number { color: var(--accent); }
.feature-card--large .feature-label { color: rgba(255,255,255,0.5); }
.feature-card--large h3 { color: white; }
.feature-card--large p { color: rgba(255,255,255,0.65); }

/* === TECH STACK === */
.tech-stack {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 40px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.tech-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 20px;
}

.tech-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.tech-item {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--fg);
  padding: 8px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
}

.tech-sep {
  width: 4px;
  height: 4px;
  background: var(--border);
  border-radius: 50%;
}

/* === HOW IT WORKS === */
.how-it-works {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 40px;
  background: var(--fg);
  color: white;
}

.how-it-works h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  letter-spacing: -0.5px;
  text-align: center;
  margin-bottom: 60px;
  color: white;
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 200px;
}

.step-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid rgba(232, 168, 73, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
}

.step-body h4 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: white;
  margin-bottom: 8px;
}

.step-body p {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  line-height: 1.6;
}

.step-connector {
  width: 80px;
  height: 2px;
  background: rgba(255,255,255,0.1);
  margin-top: 28px;
  flex-shrink: 0;
}

/* === VISION === */
.vision {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 40px;
  text-align: center;
}

.vision-inner {
  max-width: 720px;
  margin: 0 auto;
}

.vision-mark {
  font-size: 28px;
  color: var(--accent);
  margin-bottom: 28px;
  display: block;
}

.vision-quote {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 500;
  line-height: 1.5;
  color: var(--fg);
  letter-spacing: -0.3px;
  margin-bottom: 24px;
  font-style: normal;
}

.vision-cite {
  font-size: 14px;
  color: var(--muted);
  font-style: normal;
}

/* === CLOSING === */
.closing {
  background: var(--fg);
  padding: 100px 40px;
}

.closing-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  color: white;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 20px;
}

.closing p {
  font-size: 18px;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
  margin-bottom: 32px;
}

.closing-badges {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.closing-badges span {
  padding: 8px 18px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.8);
}

/* === FOOTER === */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 40px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--fg);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-copy {
  font-size: 13px;
  color: var(--muted);
  width: 100%;
  text-align: center;
  margin-top: 24px;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .nav-inner { padding: 16px 20px; }
  .hero { padding: 48px 20px 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { order: -1; }
  .phone-frame { width: 220px; }
  .phone-screen { height: 300px; padding: 18px 16px; }
  .features { padding: 60px 20px; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-card--large { order: -1; }
  .tech-stack { padding: 40px 20px; }
  .how-it-works { padding: 60px 20px; }
  .steps { gap: 32px; }
  .step-connector { display: none; }
  .step { max-width: 100%; }
  .vision { padding: 60px 20px; }
  .closing { padding: 60px 20px; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-copy { margin-top: 8px; }
}

@media (max-width: 480px) {
  .hero-headline { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .tech-logos { gap: 12px; }
  .tech-item { font-size: 14px; padding: 6px 14px; }
}