/* ===== Design System ===== */
:root {
  --brand-primary: #6c63ff;
  --brand-secondary: #5a52d5;
  --brand-glow: rgba(108, 99, 255, 0.3);
  --bg-dark: #0a0a0f;
  --bg-card: #12121a;
  --bg-card-hover: #1a1a28;
  --bg-surface: #0e0e16;
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b8;
  --text-muted: #606080;
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-card: rgba(255, 255, 255, 0.08);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

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

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

img {
  max-width: 100%;
  display: block;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: none;
  transition: all var(--transition-normal);
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand-primary), #8b83ff);
  color: white;
  box-shadow: 0 4px 20px var(--brand-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(108, 99, 255, 0.5);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-card);
}

.btn-ghost:hover {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--brand-primary);
}

.btn-nav {
  padding: 8px 20px;
  font-size: 13px;
  background: var(--brand-primary);
  color: white;
  border-radius: var(--radius-md);
}

.btn-nav:hover {
  background: var(--brand-secondary);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
  border-radius: var(--radius-xl);
}

/* ===== Gradient Text ===== */
.gradient-text {
  background: linear-gradient(135deg, var(--brand-primary) 0%, #a78bfa 50%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition-normal);
  backdrop-filter: blur(0px);
}

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

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.nav-brand img {
  border-radius: var(--radius-sm);
}

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

.nav-links a:not(.btn) {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.nav-links a:not(.btn):hover {
  color: var(--text-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.3;
  animation: float 8s ease-in-out infinite;
}

.hero-orb-1 {
  width: 500px;
  height: 500px;
  background: var(--brand-primary);
  top: -10%;
  right: -5%;
  animation-delay: 0s;
}

.hero-orb-2 {
  width: 400px;
  height: 400px;
  background: #ec4899;
  bottom: -10%;
  left: -5%;
  animation-delay: -3s;
}

.hero-orb-3 {
  width: 300px;
  height: 300px;
  background: #10a37f;
  top: 40%;
  left: 50%;
  transform: translateX(-50%);
  animation-delay: -5s;
  opacity: 0.15;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.2);
  color: var(--brand-primary);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 32px;
  animation: fadeInDown 0.8s ease;
}

.hero-title {
  font-size: clamp(40px, 7vw, 80px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -2px;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  margin-top: 64px;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 32px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -1px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-card);
}

/* ===== Section Common ===== */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--brand-primary);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* ===== Features ===== */
.features {
  padding: 100px 0;
  background: var(--bg-surface);
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-normal);
}

.feature-card:hover {
  border-color: rgba(108, 99, 255, 0.2);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  background: rgba(108, 99, 255, 0.08);
  color: var(--icon-color, var(--brand-primary));
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== Platforms ===== */
.platforms {
  padding: 100px 0;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.platform-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.platform-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--brand-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.platform-card:hover {
  transform: translateY(-6px);
  border-color: var(--brand-primary);
  box-shadow: 0 20px 60px rgba(108, 99, 255, 0.15);
}

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

.platform-logo {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.platform-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
}

.platform-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.platform-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 50px;
  background: rgba(108, 99, 255, 0.08);
  color: var(--brand-primary);
  border: 1px solid rgba(108, 99, 255, 0.15);
}

/* ===== How It Works ===== */
.how-it-works {
  padding: 100px 0;
  background: var(--bg-surface);
}

.steps-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  flex: 1;
  max-width: 300px;
  transition: all var(--transition-normal);
}

.step-card:hover {
  border-color: var(--brand-primary);
  transform: translateY(-4px);
}

.step-number {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-primary), #8b83ff);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 22px;
  font-weight: 800;
  color: white;
  box-shadow: 0 4px 20px var(--brand-glow);
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.step-connector {
  display: flex;
  align-items: center;
  opacity: 0.3;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 100px 0;
}

.cta-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 80px 40px;
  text-align: center;
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108, 99, 255, 0.15), transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.cta-card h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
}

.cta-card > p {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 36px;
  position: relative;
}

.cta-actions {
  position: relative;
  margin-bottom: 16px;
}

.cta-note {
  font-size: 13px;
  color: var(--text-muted);
  position: relative;
}

/* ===== Footer ===== */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border-subtle);
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 15px;
}

.footer-brand img {
  border-radius: 6px;
}

.footer-text {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Animations ===== */
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Scroll reveal */
.feature-card,
.platform-card,
.step-card {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.feature-card.visible,
.platform-card.visible,
.step-card.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */

/* Tablet */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .steps-grid {
    flex-wrap: wrap;
  }

  .step-card {
    max-width: none;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  /* Navbar */
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links .btn-nav {
    width: 100%;
    text-align: center;
    justify-content: center;
    padding: 12px 20px;
  }

  /* Hero */
  .hero {
    padding: 100px 0 60px;
    min-height: auto;
  }

  .hero-title {
    letter-spacing: -1px;
  }

  .hero-subtitle br {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    flex-direction: row;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 40px;
  }

  .stat-divider {
    width: 1px;
    height: 32px;
  }

  .stat-number {
    font-size: 24px;
  }

  .stat-label {
    font-size: 11px;
  }

  /* Sections */
  .features,
  .platforms,
  .how-it-works,
  .cta-section {
    padding: 64px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .section-desc {
    font-size: 15px;
  }

  /* Features */
  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-card {
    padding: 24px;
  }

  /* Platforms */
  .platform-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .platform-card {
    padding: 32px 24px;
  }

  /* Steps */
  .steps-grid {
    flex-direction: column;
    gap: 16px;
  }

  .step-card {
    max-width: none;
    padding: 28px 24px;
  }

  .step-connector {
    transform: rotate(90deg);
  }

  /* CTA */
  .cta-card {
    padding: 48px 20px;
  }

  .cta-card > p {
    font-size: 15px;
  }

  .cta-actions .btn {
    width: 100%;
    justify-content: center;
  }

  /* Footer */
  .footer-content {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  /* Buttons */
  .btn-lg {
    padding: 14px 28px;
    font-size: 15px;
  }
}

/* Small phones */
@media (max-width: 400px) {
  .hero-badge {
    font-size: 11px;
    padding: 6px 14px;
  }

  .hero-stats {
    gap: 12px;
  }

  .stat-number {
    font-size: 20px;
  }

  .feature-card h3,
  .platform-card h3,
  .step-card h3 {
    font-size: 16px;
  }
}