/* ========================================
   Design Tokens
   ======================================== */
:root {
  --bg-primary: #0a0a1a;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --accent-purple: #7b2ff7;
  --accent-blue: #2196f3;
  --accent-cyan: #00d4ff;
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b8;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(123, 47, 247, 0.3);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --container-max: 1200px;
  --section-padding: 120px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-secondary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

button {
  font: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

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

.container-narrow {
  max-width: 800px;
}

.section {
  position: relative;
  padding: var(--section-padding) 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.sr-only-focusable:focus {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 10000;
  width: auto;
  height: auto;
  padding: 12px 24px;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
  background: var(--accent-purple);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.text-gradient {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue), var(--accent-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  margin-top: 16px;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 16px auto 0;
}

/* ========================================
   Gradient Mesh Background
   ======================================== */
.mesh-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.mesh-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.3;
  animation: float 20s ease-in-out infinite;
}

.mesh-blob-1 {
  width: 600px;
  height: 600px;
  background: var(--accent-purple);
  top: -200px;
  left: -100px;
}

.mesh-blob-2 {
  width: 500px;
  height: 500px;
  background: var(--accent-blue);
  top: -100px;
  right: -150px;
  animation-delay: -7s;
}

.mesh-blob-3 {
  width: 400px;
  height: 400px;
  background: var(--accent-cyan);
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  animation-delay: -14s;
}

/* ========================================
   Components
   ======================================== */

/* Badge */
.badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(123, 47, 247, 0.12);
  border: 1px solid rgba(123, 47, 247, 0.25);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent-cyan);
  letter-spacing: 0.02em;
}

/* Glass Card */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: background 0.3s, border-color 0.3s, transform 0.3s;
}

.glass-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-4px);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: transform 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  background-size: 200% 200%;
  color: #fff;
  animation: gradientShift 4s ease infinite;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(123, 47, 247, 0.4);
}

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

.btn-secondary:hover {
  border-color: var(--accent-purple);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(123, 47, 247, 0.15);
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.125rem;
}

.btn-block {
  width: 100%;
}

/* ========================================
   Navbar
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: background 0.3s, backdrop-filter 0.3s, padding 0.3s;
}

.navbar.scrolled {
  background: rgba(10, 10, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 10px 0;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.logo-dot {
  color: var(--text-secondary);
  font-weight: 400;
}

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

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-blue));
  border-radius: 1px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ========================================
   Hero
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  text-align: center;
}

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

.hero-title {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.1;
  margin-top: 24px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  max-width: 640px;
  margin: 24px auto 0;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 40px;
  flex-wrap: wrap;
}

.hero-rings {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  pointer-events: none;
  z-index: 0;
}

.hero-rings::before,
.hero-rings::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(123, 47, 247, 0.08);
}

.hero-rings::before {
  inset: 80px;
  border-color: rgba(33, 150, 243, 0.06);
  animation: pulse 8s ease-in-out infinite;
}

.hero-rings::after {
  inset: 160px;
  border-color: rgba(123, 47, 247, 0.04);
  animation: pulse 8s ease-in-out infinite 2s;
}

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

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(123, 47, 247, 0.08);
  border-radius: 12px;
  margin-bottom: 20px;
}

.features-grid h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.features-grid p {
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ========================================
   How It Works
   ======================================== */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 32px;
  left: calc(16.67% + 32px);
  right: calc(16.67% + 32px);
  height: 2px;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-blue));
  opacity: 0.3;
}

.step {
  text-align: center;
}

.step-number {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  position: relative;
  z-index: 1;
}

.step h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.step p {
  font-size: 0.9375rem;
  max-width: 300px;
  margin: 0 auto;
}

/* ========================================
   Pricing
   ======================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  text-align: center;
  padding: 40px 32px;
}

.pricing-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.pricing-amount {
  font-size: 3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 16px 0 8px;
}

.pricing-amount span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-secondary);
}

.pricing-desc {
  font-size: 0.9375rem;
  margin-bottom: 24px;
}

.pricing-features {
  text-align: left;
  margin-bottom: 32px;
}

.pricing-features li {
  padding: 8px 0;
  font-size: 0.9375rem;
  position: relative;
  padding-left: 24px;
}

.pricing-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
}

.pricing-card-featured {
  border-color: var(--accent-purple);
  position: relative;
  transform: scale(1.05);
  background: rgba(123, 47, 247, 0.06);
}

.pricing-card-featured:hover {
  transform: scale(1.05) translateY(-4px);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 20px;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: 100px;
  white-space: nowrap;
}

/* ========================================
   Testimonials
   ======================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.testimonial-text {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
  font-style: italic;
  flex: 1;
  margin-bottom: 24px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #fff;
  flex-shrink: 0;
}

.testimonial-author strong {
  display: block;
  color: var(--text-primary);
  font-size: 0.9375rem;
}

.testimonial-author span {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* ========================================
   FAQ
   ======================================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  padding: 0;
  overflow: hidden;
}

.faq-item:hover {
  transform: none;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
}

.faq-question:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: -2px;
  border-radius: var(--radius-md);
}

.faq-icon {
  flex-shrink: 0;
  transition: transform 0.3s;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding: 0 24px 20px;
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
  text-align: center;
  overflow: hidden;
}

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

.cta-section .section-subtitle {
  margin-bottom: 32px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 0.9375rem;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-col a {
  display: block;
  padding: 6px 0;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.875rem;
}

.footer-bottom a {
  color: var(--accent-cyan);
  transition: color 0.2s;
}

.footer-bottom a:hover {
  color: var(--accent-purple);
}

/* ========================================
   Animations
   ======================================== */
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.5; }
}

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

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

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

  .pricing-card-featured {
    transform: scale(1);
  }

  .pricing-card-featured:hover {
    transform: translateY(-4px);
  }

  .steps::before {
    display: none;
  }

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

@media (max-width: 768px) {
  :root {
    --section-padding: 80px;
  }

  .hamburger {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    background: rgba(10, 10, 26, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 80px 32px 32px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 999;
  }

  .nav-open .nav {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    gap: 0;
  }

  .nav-link {
    display: block;
    padding: 16px 0;
    font-size: 1.125rem;
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-link.active::after {
    display: none;
  }

  .nav-open .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-open .hamburger-line:nth-child(2) {
    opacity: 0;
  }

  .nav-open .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

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

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

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

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

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  :root {
    --section-padding: 64px;
  }

  .glass-card {
    padding: 24px;
  }

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

/* ========================================
   Reduced Motion
   ======================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}