@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --bg-color: #f8fafc;
  --surface: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.5);
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Dynamic Background */
.bg-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  background: linear-gradient(135deg, #f0fdfa 0%, #eff6ff 50%, #fdf4ff 100%);
  overflow: hidden;
}

.bg-shape {
  position: absolute;
  filter: blur(80px);
  opacity: 0.6;
  animation: float 20s infinite alternate;
}

.shape1 {
  top: -10%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: #bfdbfe;
  border-radius: 50%;
}

.shape2 {
  bottom: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: #fbcfe8;
  border-radius: 50%;
  animation-delay: -5s;
}

.shape3 {
  top: 40%;
  left: 40%;
  width: 400px;
  height: 400px;
  background: #bbf7d0;
  border-radius: 50%;
  animation-duration: 25s;
}

@keyframes float {
  0% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(50px, 30px) rotate(180deg); }
  100% { transform: translate(-30px, 60px) rotate(360deg); }
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
  background: rgba(255, 255, 255, 0.9);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active {
  color: var(--primary);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-main);
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 30px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.39);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
}

/* Hero Section */
.hero {
  padding: 160px 0 100px;
  text-align: center;
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 20px;
  background: linear-gradient(to right, #1e293b, #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 40px;
}

.hero-btns {
  display: flex;
  gap: 20px;
  justify-content: center;
}

/* Section Common */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
  color: var(--text-main);
}

.section-title p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Glass Card */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 40px;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.feature-card {
  text-align: center;
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: #eff6ff;
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 20px;
}

.feature-card h3 {
  margin-bottom: 15px;
  font-size: 1.25rem;
}

.feature-card p {
  color: var(--text-muted);
}

/* Node Status */
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.status-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px;
}

.status-info {
  display: flex;
  align-items: center;
  gap: 15px;
}

.status-flag {
  font-size: 1.5rem;
}

.status-name {
  font-weight: 600;
}

.status-ping {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #10b981;
  font-weight: 500;
}

.ping-dot {
  width: 8px;
  height: 8px;
  background-color: #10b981;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Pricing */
.pricing-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
}

.pricing-card {
  flex: 1;
  min-width: 280px;
  max-width: 350px;
  padding: 40px 30px;
  display: flex;
  flex-direction: column;
}

.pricing-card.popular {
  border: 2px solid var(--primary);
  position: relative;
  transform: scale(1.05);
}

.pricing-card.popular:hover {
  transform: scale(1.05) translateY(-5px);
}

.popular-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.pricing-header {
  text-align: center;
  margin-bottom: 30px;
}

.pricing-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 15px;
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
}

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

.pricing-features {
  flex-grow: 1;
  margin-bottom: 30px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 15px;
  color: var(--text-main);
}

.pricing-features i {
  color: #10b981;
}

/* Testimonials */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.testimonial-card {
  padding: 30px;
}

.testimonial-content {
  font-style: italic;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 15px;
}

.author-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.2rem;
}

.author-info h4 {
  font-size: 1rem;
}

.author-info span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

.faq-item {
  margin-bottom: 15px;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-question:hover {
  border-color: var(--primary);
}

.faq-question i {
  transition: transform 0.3s ease;
}

.faq-question.active i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  padding: 0 20px;
}

.faq-answer p {
  padding: 20px 0;
  color: var(--text-muted);
}

/* Knowledge Base */
.kb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.kb-card {
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.kb-card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  line-height: 1.4;
}

.kb-card a {
  margin-top: auto;
  color: var(--primary);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 5px;
}

.kb-card a:hover {
  text-decoration: underline;
}

/* Footer */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 20px;
  margin-top: 50px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h3 {
  font-size: 1.2rem;
  margin-bottom: 20px;
  color: var(--text-main);
}

.footer-col p {
  color: var(--text-muted);
  margin-bottom: 15px;
}

.footer-links li {
  margin-bottom: 10px;
}

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

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

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--surface);
    flex-direction: column;
    padding: 20px;
    box-shadow: var(--shadow-md);
    text-align: center;
  }
  
  .nav-links.active {
    display: flex;
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .pricing-card.popular {
    transform: scale(1);
  }
  
  .pricing-card.popular:hover {
    transform: translateY(-5px);
  }
}