:root {
  --primary: #1da1f2;
  --primary-dark: #0c7abf;
  --primary-light: #4db8ff;
  --secondary: #14171a;
  --text-primary: #14171a;
  --text-secondary: #657786;
  --bg-light: #f7f9fa;
  --bg-white: #ffffff;
  --border: #e1e8ed;
  --success: #17bf63;
  --warning: #ffad1f;
  --error: #e0245e;
  --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

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

body {
  font-family: Manrope;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-light);
  overflow-x: hidden;
}

/* Animated Background */
.bg-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.03;
  pointer-events: none;
}

.bg-animation::before {
  content: "";
  position: absolute;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, var(--primary) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: moveBackground 20s linear infinite;
}

@keyframes moveBackground {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(50px, 50px);
  }
}

/* Header */
header {
  background: var(--bg-white);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 100;
  animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 800;
  transition: transform 0.3s ease;
}

.logo:hover {
  transform: scale(1.1) rotate(5deg);
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--secondary);
}

.logo-text span {
  background: var(--gradient-3);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
}

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

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

/* Hero Section */
.hero {
  background: linear-gradient(
    135deg,
    var(--primary) 0%,
    var(--primary-dark) 100%
  );
  color: white;
  padding: 5rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -10%;
  width: 60%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 70%
  );
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.2);
    opacity: 0.8;
  }
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.8s ease-out;
}

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

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero p {
  font-size: 1.3rem;
  opacity: 0.95;
  font-weight: 300;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

/* Section Styles */
.section {
  margin-bottom: 5rem;
  animation: fadeInUp 0.8s ease-out;
  animation-fill-mode: both;
}

.section:nth-child(2) {
  animation-delay: 0.1s;
}
.section:nth-child(3) {
  animation-delay: 0.2s;
}
.section:nth-child(4) {
  animation-delay: 0.3s;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 0.5rem;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--gradient-3);
  border-radius: 2px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 1.5rem auto 0;
}

/* Quick Start Cards */
.quick-start-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.quick-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 20px;
  box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.quick-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-3);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.quick-card:hover::before {
  transform: scaleX(1);
}

.quick-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 50px rgba(29, 161, 242, 0.2);
}

.quick-card-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-3);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 1.5rem;
  transition: transform 0.3s ease;
}

.quick-card:hover .quick-card-icon {
  transform: rotate(360deg) scale(1.1);
}

.quick-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  color: var(--secondary);
}

.quick-card p {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
  margin-top: 3rem;
}

.feature-item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 16px;
  transition: all 0.3s ease;
}

.feature-item:hover {
  transform: translateX(8px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(
    135deg,
    rgba(29, 161, 242, 0.1) 0%,
    rgba(29, 161, 242, 0.2) 100%
  );
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.feature-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--secondary);
}

.feature-content p {
  color: var(--text-secondary);
  line-height: 1.6;
}

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

.faq-item {
  background: var(--bg-white);
  border-radius: 16px;
  margin-bottom: 1.5rem;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
}

.faq-item:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.faq-question {
  padding: 1.8rem 2rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--secondary);
  cursor: pointer;
  user-select: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.3s ease;
}

.faq-question:hover {
  background: var(--bg-light);
}

.faq-question::after {
  content: "+";
  font-size: 1.8rem;
  color: var(--primary);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition:
    max-height 0.4s ease,
    padding 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 2rem 2rem 2rem;
}

.faq-answer p {
  color: var(--text-secondary);
  line-height: 1.8;
}

.faq-answer ul {
  margin-top: 1rem;
  padding-left: 1.5rem;
  color: var(--text-secondary);
}

.faq-answer li {
  margin-bottom: 0.5rem;
}

/* Code Block */
.code-block {
  background: #1e293b;
  color: #e2e8f0;
  padding: 1.5rem;
  border-radius: 12px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.9rem;
  overflow-x: auto;
  margin: 1rem 0;
}

.code-block code {
  color: #38bdf8;
}

/* Troubleshooting Cards */
.troubleshooting-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.trouble-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 16px;
  border-left: 4px solid var(--warning);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.trouble-card.error {
  border-left-color: var(--error);
}

.trouble-card.success {
  border-left-color: var(--success);
}

.trouble-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.trouble-card h3::before {
  content: "⚠️";
  font-size: 1.4rem;
}

.trouble-card.error h3::before {
  content: "❌";
}

.trouble-card.success h3::before {
  content: "✅";
}

.trouble-card p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.7;
}

.trouble-card ol {
  padding-left: 1.2rem;
  color: var(--text-secondary);
}

.trouble-card li {
  margin-bottom: 0.8rem;
  line-height: 1.6;
}

/* Contact Section */
.contact-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 4rem 2rem;
  border-radius: 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
  margin-top: 4rem;
}

.contact-section::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 70%
  );
  animation: rotate 20s linear infinite;
}

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

.contact-content {
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.contact-content h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.contact-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.email-box {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  padding: 1.5rem 2rem;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s ease;
}

.email-box:hover {
  transform: scale(1.05);
  background: rgba(255, 255, 255, 0.2);
}

.email-box::before {
  content: "📧";
  font-size: 2rem;
}

.email-box a {
  color: white;
  text-decoration: none;
  font-size: 1.3rem;
  font-weight: 600;
  font-family: "JetBrains Mono", monospace;
}

.social-links {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.social-btn {
  color: black;
  width: 50px;
  height: 50px;
  background: rgba(140, 140, 140, 0);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.5rem;
  transition: all 0.3s ease;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.social-btn:hover {
  background: rgb(234, 234, 234);
  transform: translateY(-4px);
}

/* Footer */
footer {
  background: var(--secondary);
  color: rgba(255, 255, 255, 0.7);
  padding: 3rem 2rem 2rem;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: white;
}

.copyright {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

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

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  }

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

  .menu-toggle {
    display: block;
  }

  .quick-start-grid,
  .features-grid,
  .troubleshooting-grid {
    grid-template-columns: 1fr;
  }

  .contact-content h2 {
    font-size: 2rem;
  }

  .email-box {
    flex-direction: column;
    text-align: center;
  }

  .email-box a {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 3rem 1.5rem;
  }

  .container {
    padding: 3rem 1.5rem;
  }

  nav {
    padding: 1rem 1.5rem;
  }

  .logo-text {
    font-size: 1.2rem;
  }
}

/* Smooth scroll */
html {
  scroll-behavior: smooth;
}

/* Highlight animation */
.highlight {
  background: linear-gradient(
    to right,
    transparent 50%,
    rgba(29, 161, 242, 0.2) 50%
  );
  background-size: 200% 100%;
  background-position: left;
  transition: background-position 0.3s ease;
  padding: 0 0.2rem;
}

.highlight:hover {
  background-position: right;
}