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

:root {
  --brand:        #4F6EF7;
  --brand-dark:   #3452d4;
  --brand-light:  #e8ecfe;
  --bg-dark:      #0d0f14;
  --bg-mid:       #161a24;
  --bg-light:     #ffffff;
  --surface:      #1e2330;
  --border:       rgba(255,255,255,0.08);
  --text-primary: #f0f2f8;
  --text-secondary: #8b91a8;
  --text-dark:    #111520;
  --radius:       14px;
  --radius-sm:    8px;
  --shadow:       0 4px 32px rgba(0,0,0,0.28);
  --transition:   0.22s ease;
  --max-width:    1100px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ── Utility ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }
.section-dark  { background: var(--bg-dark); }
.section-mid   { background: var(--bg-mid); }
.section-light {
  background: var(--bg-light);
  color: var(--text-dark);
}
.section-light .section-label { color: var(--brand-dark); }
.section-light .section-title { color: var(--text-dark); }
.section-light h3 { color: var(--text-dark); }

.section-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 40px;
  letter-spacing: -0.02em;
}

/* ── Buttons ── */
.btn-primary {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 0 0 0 rgba(79,110,247,0.4);
}
.btn-primary:hover {
  background: var(--brand-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(79,110,247,0.35);
}

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--text-primary);
  padding: 13px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1.5px solid var(--border);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}
.btn-secondary:hover {
  border-color: rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.06);
  transform: translateY(-2px);
}

/* ── Nav ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(13,15,20,0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-right: 24px;
  height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-logo-img { height: 60px; width: auto; }
.nav-wordmark {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}
.nav-links a {
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover { color: var(--text-primary); background: rgba(255,255,255,0.06); }
.btn-nav {
  background: var(--brand) !important;
  color: #fff !important;
  font-weight: 600 !important;
}
.btn-nav:hover { background: var(--brand-dark) !important; }

/* ── Hero ── */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 24px 64px;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(79,110,247,0.18) 0%, transparent 70%),
    var(--bg-dark);
  position: relative;
}

.hero-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 0.78rem;
  margin-bottom: 32px;
  color: var(--text-secondary);
}
.badge-label { font-weight: 500; }
.badge-district {
  padding-left: 10px;
  border-left: 1px solid var(--border);
  color: var(--brand);
  font-weight: 600;
}
.badge-district strong { color: var(--brand); }

.hero-logo {
  width: 450px;
  height: auto;
  margin: 0 auto 24px;
  border-radius: 22px;
  overflow: hidden;
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
}
.hero-logo img { width: 100%; height: 100%; object-fit: cover; }

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 30%, rgba(255,255,255,0.55));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  padding-bottom: 10px;
}

.hero-tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 40px;
  font-weight: 400;
}

.hero-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  font-size: 1.2rem;
  color: var(--text-secondary);
  animation: bounce 1.8s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); opacity: 0.5; }
  50% { transform: translateY(6px); opacity: 1; }
}

/* ── About ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 60px;
  align-items: start;
}

.about-text p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: #444;
  margin-bottom: 18px;
}
.about-text p:last-child { margin-bottom: 0; }

.about-built h3 {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #888;
  margin-bottom: 16px;
}

.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
}

.tech-tag {
  background: var(--brand-light);
  color: var(--brand-dark);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid rgba(79,110,247,0.2);
}

/* ── Video ── */
.video-wrapper {
  position: relative;
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 64px rgba(0,0,0,0.5);
  border: 1px solid var(--border);
  aspect-ratio: 16 / 9;
  background: var(--surface);
}

.video-wrapper iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* ── Screenshots ── */
.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.screenshot-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid #e8e8e8;
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
  background: #f4f4f6;
  transition: transform var(--transition), box-shadow var(--transition);
}
.screenshot-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 32px rgba(0,0,0,0.14);
}
.screenshot-card img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  background: #dde;
}
.screenshot-card figcaption {
  padding: 12px 16px;
  font-size: 0.82rem;
  color: #666;
  font-weight: 500;
  text-align: center;
}

/* ── Team ── */
.team-intro {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin-bottom: 48px;
  line-height: 1.7;
}

.team-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.team-card {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 28px;
  min-width: 240px;
  flex: 1;
  max-width: 360px;
  transition: border-color var(--transition), transform var(--transition);
}
.team-card:hover {
  border-color: rgba(79,110,247,0.4);
  transform: translateY(-2px);
}

.team-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--brand);
  flex-shrink: 0;
  position: relative;
}
.team-avatar img { width: 100%; height: 100%; object-fit: cover; }
.team-avatar-fallback {
  display: none;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  position: absolute;
  inset: 0;
}

.team-info h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}
.team-info p {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* ── Links ── */
.links-container { text-align: center; }
.links-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  max-width: 640px;
  margin: 0 auto;
}

.link-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 28px;
  flex: 1;
  min-width: 180px;
  max-width: 260px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}
.link-card:hover {
  background: rgba(79,110,247,0.12);
  border-color: rgba(79,110,247,0.5);
  transform: translateY(-3px);
}
.link-icon { font-size: 1.1rem; }
.link-label { flex: 1; text-align: left; }
.link-arrow { color: var(--text-secondary); transition: transform var(--transition); }
.link-card:hover .link-arrow { transform: translateX(4px); }

/* ── Footer ── */
footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border);
  padding: 28px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.footer-inner strong { color: var(--text-primary); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .section { padding: 64px 0; }

  .nav-links { display: none; }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .screenshots-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .team-card { max-width: 100%; }

  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
  .screenshots-grid { grid-template-columns: 1fr 1fr; }
  .hero-cta { flex-direction: column; align-items: center; }
}

/* ── Animations ── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}