:root {
  --bg-dark: #090a0f;
  --bg-card: rgba(19, 24, 36, 0.75);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-border-hover: rgba(6, 182, 212, 0.4);
  --purple-glow: #8b5cf6;
  --purple-dark: #7c3aed;
  --cyan-glow: #06b6d4;
  --primary-gradient: linear-gradient(135deg, #8b5cf6 0%, #06b6d4 100%);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --accent-glow: rgba(139, 92, 246, 0.25);
  --radius-lg: 16px;
  --radius-md: 10px;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: "Outfit", sans-serif;
  min-height: 100vh;
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
}

.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  z-index: -1;
  pointer-events: none;
}

.glow-1 {
  top: -100px;
  left: 5%;
  width: 500px;
  height: 500px;
  background: rgba(139, 92, 246, 0.12);
}

.glow-2 {
  bottom: 10%;
  right: 5%;
  width: 600px;
  height: 600px;
  background: rgba(6, 182, 212, 0.1);
}

header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--card-border);
  background: rgba(9, 10, 15, 0.85);
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

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

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  gap: 0.5rem;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  opacity: 0.95;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(6, 182, 212, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--card-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 2rem 6rem;
}

.guide-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
}

.guide-title {
  font-size: clamp(2.3rem, 4.4vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  line-height: 1.1;
}

.title-gradient {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.guide-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  font-weight: 300;
}

.section {
  margin-bottom: 3rem;
}

.section-header {
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 0.9rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-num {
  color: var(--cyan-glow);
  font-size: 0.95rem;
  font-weight: 600;
}

.manuals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.manual-card {
  background: var(--bg-card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.manual-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.manual-card:hover {
  transform: translateY(-4px);
  border-color: var(--card-border-hover);
  box-shadow: 0 12px 30px var(--accent-glow);
}

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

.manual-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.manual-info {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.manual-logo-container {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
}

.manual-logo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.manual-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #1e1b4b 0%, #0f172a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  color: #06b6d4;
  text-transform: uppercase;
}

.manual-meta h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 0.2rem;
}

.manual-meta p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: auto;
}

.empty-state {
  text-align: center;
  padding: 3rem 2rem;
  background: var(--bg-card);
  border: 1px dashed var(--card-border);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
}

.empty-state p {
  margin-bottom: 1.25rem;
  font-size: 1rem;
}

.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 2rem 3rem;
  text-align: center;
}

.badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: 50px;
  color: #c084fc;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: 0.03em;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero-title-gradient {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto 2.5rem;
  font-weight: 300;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  max-width: 900px;
  margin: 0 auto 5rem;
  background: var(--bg-card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.metric-item h4 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-main);
}

.metric-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.features {
  max-width: 1200px;
  margin: 2rem auto 5rem;
  padding: 0 2rem;
}

.features-title {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.features-subtitle {
  color: var(--text-muted);
  font-weight: 300;
}

.search-container {
  max-width: 500px;
  margin: 0 auto 2.5rem;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 0.9rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: #06b6d4;
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--card-border-hover);
  box-shadow: 0 12px 30px var(--accent-glow);
}

.feature-icon-wrapper {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: rgba(139, 92, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: #06b6d4;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text-muted);
  line-height: 1.6;
  font-size: 0.95rem;
}

.faq-section {
  max-width: 800px;
  margin: 0 auto 5rem;
  padding: 0 2rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 1.25rem;
  text-align: left;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: inherit;
}

.faq-answer {
  padding: 0 1.25rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.cta-container {
  max-width: 1200px;
  margin: 0 auto 5rem;
  padding: 0 2rem;
}

.cta {
  padding: 4rem 2rem;
  background: linear-gradient(
    135deg,
    rgba(139, 92, 246, 0.12) 0%,
    rgba(6, 182, 212, 0.12) 100%
  );
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta h2 {
  font-size: 2.25rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.cta p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 2rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

footer {
  border-top: 1px solid var(--card-border);
  padding: 2.5rem 2rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.875rem;
}

@media (max-width: 768px) {
  nav {
    padding: 1rem 1.25rem;
  }

  .container {
    padding: 2rem 1rem 4rem;
  }

  .manuals-grid {
    grid-template-columns: 1fr;
  }

  .card-actions {
    flex-direction: column;
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding-top: 3rem;
  }

  .hero-buttons .btn {
    width: 100%;
  }

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