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

:root {
  --bg: #0a0a0f;
  --bg-card: #12121a;
  --bg-card-hover: #1a1a26;
  --border: #1e1e2e;
  --text: #e4e4ed;
  --text-muted: #8888a0;
  --primary: #6366f1;
  --primary-light: #818cf8;
  --gradient: linear-gradient(135deg, #6366f1, #a855f7, #ec4899);
  --green: #22c55e;
  --blue: #3b82f6;
  --orange: #f59e0b;
  --purple: #a855f7;
  --red: #ef4444;
  --teal: #14b8a6;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-weight: 600;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-sm { padding: 8px 20px; font-size: 0.875rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 16px rgba(99,102,241,0.3);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(99,102,241,0.4);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary-light);
}

.btn-white {
  background: #fff;
  color: var(--bg);
}
.btn-white:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(255,255,255,0.2);
}

/* ── Text Gradient ── */
.text-gradient {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: all 0.3s ease;
  background: transparent;
}

.navbar.scrolled {
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  color: var(--text);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  color: #fff;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

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

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(99,102,241,0.15), transparent),
    radial-gradient(ellipse 40% 40% at 80% 20%, rgba(168,85,247,0.1), transparent);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(99,102,241,0.12);
  border: 1px solid rgba(99,102,241,0.25);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 40px;
}

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

.stat-number {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Hero Visual Cards */
.hero-visual {
  position: relative;
  height: 380px;
}

.hero-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 28px;
  box-shadow: var(--shadow);
  animation: float 6s ease-in-out infinite;
}

.card-1 { top: 20px; left: 10%; animation-delay: 0s; }
.card-2 { top: 140px; right: 5%; animation-delay: -2s; }
.card-3 { bottom: 20px; left: 15%; animation-delay: -4s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.card-icon-green { background: rgba(34,197,94,0.12); color: var(--green); }
.card-icon-blue { background: rgba(59,130,246,0.12); color: var(--blue); }
.card-icon-purple { background: rgba(168,85,247,0.12); color: var(--purple); }

.card-info {
  display: flex;
  flex-direction: column;
}

.card-title {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.card-value {
  font-size: 1.35rem;
  font-weight: 700;
}

/* ── Section Shared ── */
.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.section-badge {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(99,102,241,0.1);
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* ── Features ── */
.features {
  padding: 100px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(99,102,241,0.2);
  transform: translateY(-4px);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.icon-blue { background: rgba(59,130,246,0.12); color: var(--blue); }
.icon-green { background: rgba(34,197,94,0.12); color: var(--green); }
.icon-orange { background: rgba(245,158,11,0.12); color: var(--orange); }
.icon-purple { background: rgba(168,85,247,0.12); color: var(--purple); }
.icon-red { background: rgba(239,68,68,0.12); color: var(--red); }
.icon-teal { background: rgba(20,184,166,0.12); color: var(--teal); }

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

/* ── How it Works ── */
.how-it-works {
  padding: 100px 0;
  background: linear-gradient(180deg, transparent, rgba(99,102,241,0.03), transparent);
}

.steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  max-width: 900px;
  margin: 0 auto;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex: 1;
}

.step-number {
  width: 64px;
  height: 64px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 24px;
  box-shadow: 0 4px 20px rgba(99,102,241,0.3);
}

.step-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-content p {
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 240px;
  margin: 0 auto;
}

.step-line {
  width: 80px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--purple));
  opacity: 0.3;
  margin-bottom: 60px;
}

/* ── Tech ── */
.tech {
  padding: 100px 0;
}

.tech-grid {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.tech-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.tech-icon {
  width: 72px;
  height: 72px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--primary-light);
  transition: all 0.3s ease;
}

.tech-item:hover .tech-icon {
  border-color: var(--primary);
  transform: translateY(-3px);
}

.tech-item span {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.tech-features {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px 40px;
}

.tech-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.tech-feature svg {
  color: var(--green);
  flex-shrink: 0;
}

/* ── CTA ── */
.cta {
  padding: 80px 0;
}

.cta-inner {
  text-align: center;
  background: var(--gradient);
  border-radius: var(--radius-lg);
  padding: 80px 40px;
  position: relative;
  overflow: hidden;
}

.cta-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.1), transparent 60%);
  pointer-events: none;
}

.cta-inner h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  position: relative;
}

.cta-inner p {
  color: rgba(255,255,255,0.8);
  font-size: 1.05rem;
  margin-bottom: 32px;
  position: relative;
}

/* ── Footer ── */
.footer {
  padding: 60px 0 30px;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 12px;
  max-width: 300px;
}

.footer-links h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links li,
.footer-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.2s;
}

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

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Responsive ── */
@media (max-width: 968px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero h1 { font-size: 2.5rem; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { display: none; }

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

  .section-header h2 { font-size: 2rem; }

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

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10,10,15,0.95);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }

  .hero { padding: 120px 0 60px; }
  .hero h1 { font-size: 2rem; }

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

  .steps { flex-direction: column; gap: 0; }
  .step-line {
    width: 2px;
    height: 40px;
    margin-bottom: 0;
  }

  .cta-inner { padding: 48px 24px; }
  .cta-inner h2 { font-size: 1.6rem; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}