/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-black: #000000;
  --cyan: #00FFD1;
  --gray-light: #B0B6C1;
  --gray-dark: #1A1D23;
  --white: #FFFFFF;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-black);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 255, 209, 0.2);
  z-index: 1000;
  transition: var(--transition);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-weight: 800;
}

.logo-main {
  color: var(--cyan);
  font-size: 1.5rem;
  letter-spacing: 0.05em;
}

.logo-sub {
  color: var(--gray-light);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.nav {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: var(--gray-light);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--cyan);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--cyan);
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-user {
  background: var(--gray-dark);
  color: var(--white);
  border: 1px solid var(--cyan);
  padding: 0.5rem 1.5rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
}

.btn-user:hover {
  background: var(--cyan);
  color: var(--bg-black);
}

.burger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.burger span {
  width: 24px;
  height: 2px;
  background: var(--cyan);
  transition: var(--transition);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background: var(--cyan);
  color: var(--bg-black);
  box-shadow: 0 0 20px rgba(0, 255, 209, 0.5);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(0, 255, 209, 0.8);
}

.btn-secondary {
  background: var(--gray-dark);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--cyan);
}

.btn-outline {
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--cyan);
}

.btn-outline:hover {
  background: rgba(0, 255, 209, 0.1);
  box-shadow: 0 0 20px rgba(0, 255, 209, 0.3);
}

.pulse-btn {
  animation: pulse-glow 2s ease-in-out infinite;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  overflow: hidden;
}

.particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--cyan);
  border-radius: 50%;
  opacity: 0.6;
  animation: float 6s ease-in-out infinite;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 600px;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--white) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--gray-light);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.sphere-container {
  width: 400px;
  height: 400px;
  position: relative;
}

.sphere {
  width: 100%;
  height: 100%;
  position: relative;
  animation: float 6s ease-in-out infinite;
}

.sphere-ring {
  position: absolute;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  opacity: 0.3;
  animation: rotate 20s linear infinite;
}

.sphere-ring:nth-child(1) {
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  animation-duration: 15s;
}

.sphere-ring:nth-child(2) {
  width: 80%;
  height: 80%;
  top: 10%;
  left: 10%;
  animation-duration: 20s;
  animation-direction: reverse;
}

.sphere-ring:nth-child(3) {
  width: 60%;
  height: 60%;
  top: 20%;
  left: 20%;
  animation-duration: 25s;
}

.sphere-core {
  position: absolute;
  width: 40%;
  height: 40%;
  top: 30%;
  left: 30%;
  background: radial-gradient(circle, var(--cyan) 0%, transparent 70%);
  border-radius: 50%;
  filter: blur(20px);
  animation: pulse-glow 2s ease-in-out infinite;
}

/* Section Styles */
section {
  padding: 6rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--white) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--gray-light);
  max-width: 600px;
  margin: 0 auto;
}

/* Features Section */
.features {
  background: linear-gradient(180deg, var(--bg-black) 0%, #050505 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: linear-gradient(135deg, #0A0A0A 0%, #1A1D23 100%);
  border: 1px solid rgba(0, 255, 209, 0.2);
  border-radius: 1rem;
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 255, 209, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  border-color: var(--cyan);
  transform: translateY(-8px);
  box-shadow: 0 0 40px rgba(0, 255, 209, 0.3);
}

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

.feature-image {
  width: 100%;
  height: 200px;
  border-radius: 0.75rem;
  overflow: hidden;
  margin-bottom: 1.5rem;
  background: var(--gray-dark);
}

.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(0, 255, 209, 0.1);
  border: 1px solid var(--cyan);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.feature-icon svg {
  color: var(--cyan);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.feature-description {
  color: var(--gray-light);
  line-height: 1.6;
}

/* Pricing Section */
.pricing {
  background: var(--bg-black);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.pricing-card {
  background: linear-gradient(135deg, #0A0A0A 0%, #1A1D23 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1rem;
  padding: 2.5rem;
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  border-color: var(--cyan);
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0, 255, 209, 0.2);
}

.pricing-featured {
  border-color: var(--cyan);
  box-shadow: 0 0 40px rgba(0, 255, 209, 0.3);
  transform: scale(1.05);
}

.pricing-featured:hover {
  transform: scale(1.05) translateY(-8px);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--cyan);
  color: var(--bg-black);
  padding: 0.25rem 1rem;
  border-radius: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
}

.pricing-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-align: center;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin-bottom: 2rem;
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gray-light);
}

.price-value {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--cyan);
  margin: 0 0.25rem;
}

.price-period {
  font-size: 1rem;
  color: var(--gray-light);
}

.pricing-features {
  list-style: none;
  margin-bottom: 2rem;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0;
  color: var(--gray-light);
}

.pricing-card .btn {
  width: 100%;
  justify-content: center;
}

/* Testimonials Section */
.testimonials {
  background: linear-gradient(180deg, var(--bg-black) 0%, #050505 100%);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.testimonial-card {
  background: linear-gradient(135deg, #0A0A0A 0%, #1A1D23 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1rem;
  padding: 2rem;
  transition: var(--transition);
}

.testimonial-card:hover {
  border-color: var(--cyan);
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0, 255, 209, 0.2);
}

.testimonial-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan) 0%, #00B8A0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--bg-black);
  margin-bottom: 1rem;
}

.testimonial-stars {
  color: var(--cyan);
  font-size: 1.25rem;
  margin-bottom: 1rem;
  letter-spacing: 0.2rem;
}

.testimonial-text {
  color: var(--gray-light);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1rem;
}

.author-name {
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.author-role {
  color: var(--gray-light);
  font-size: 0.875rem;
}

/* FAQ Section */
.faq {
  background: var(--bg-black);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: linear-gradient(135deg, #0A0A0A 0%, #1A1D23 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.75rem;
  margin-bottom: 1rem;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--cyan);
}

.faq-item[open] {
  border-color: var(--cyan);
  box-shadow: 0 0 20px rgba(0, 255, 209, 0.2);
}

.faq-question {
  padding: 1.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  transition: var(--transition);
  flex-shrink: 0;
  color: var(--cyan);
}

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

.faq-answer {
  padding: 0 1.5rem 1.5rem;
  color: var(--gray-light);
  line-height: 1.6;
  animation: fade-in 0.3s ease-out;
}

/* Footer */
.footer {
  background: #050505;
  border-top: 2px solid var(--cyan);
  padding: 3rem 0 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .logo {
  margin-bottom: 1rem;
}

.footer-description {
  color: var(--gray-light);
  line-height: 1.6;
  max-width: 400px;
}

.footer-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-links ul,
.footer-contact ul {
  list-style: none;
}

.footer-links li,
.footer-contact li {
  margin-bottom: 0.75rem;
}

.footer-links a,
.footer-contact a {
  color: var(--gray-light);
  text-decoration: none;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-links a:hover,
.footer-contact a:hover {
  color: var(--cyan);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--gray-light);
  font-size: 0.875rem;
}

/* Scroll to Top Button */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background: var(--cyan);
  color: var(--bg-black);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px rgba(0, 255, 209, 0.5);
  transition: var(--transition);
  z-index: 999;
}

.scroll-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 40px rgba(0, 255, 209, 0.8);
}

.scroll-top.visible {
  display: flex;
}

/* Animations */
@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse-glow {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 20px rgba(0, 255, 209, 0.5);
  }
  50% {
    opacity: 0.8;
    box-shadow: 0 0 40px rgba(0, 255, 209, 0.8);
  }
}

@keyframes fade-in {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slide-up {
  0% {
    opacity: 0;
    transform: translateY(30px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fade-in 0.6s ease-out;
}

.slide-up {
  opacity: 0;
  animation: slide-up 0.6s ease-out forwards;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .features-grid,
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
  }
  
  .pricing-featured {
    transform: scale(1);
  }
  
  .pricing-featured:hover {
    transform: translateY(-8px);
  }
}

@media (max-width: 768px) {
  .burger {
    display: flex;
  }
  
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: 1rem;
    gap: 0;
    display: none;
    border-bottom: 1px solid rgba(0, 255, 209, 0.2);
  }
  
  .nav.active {
    display: flex;
  }
  
  .nav-link {
    padding: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .header-actions .btn {
    display: none;
  }
  
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .sphere-container {
    width: 300px;
    height: 300px;
  }
  
  .features-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .section-subtitle {
    font-size: 1rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .container {
    padding: 0 1rem;
  }
}