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

:root {
  --primary-color: #3b82f6;
  --primary-dark: #2563eb;
  --primary-light: #60a5fa;
  --secondary-color: #10b981;
  --dark-bg: #0f172a;
  --darker-bg: #0a0f1f;
  --card-bg: #1e293b;
  --card-hover: #2d3748;
  --text-color: #f8fafc;
  --text-secondary: #cbd5e1;
  --border-color: #334155;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  --transition: all 0.3s ease;
}

body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Oxygen,
    Ubuntu,
    sans-serif;
  background-color: var(--dark-bg);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* Typography */
h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(
    135deg,
    var(--text-color) 0%,
    var(--primary-light) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  text-align: center;
  position: relative;
  display: inline-block;
}

h2:after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--secondary-color)
  );
  border-radius: 2px;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-dark)
  );
  color: white;
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 30px rgba(59, 130, 246, 0.4);
}

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

.btn-secondary:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: translateY(-2px);
}

.btn-large {
  padding: 16px 32px;
  font-size: 1.1rem;
}

.btn i {
  margin-right: 8px;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

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

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-color);
  text-decoration: none;
}

.logo span {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

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

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

.nav-links a:after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--secondary-color)
  );
  transition: width 0.3s;
}

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

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

.language-switcher {
  display: flex;
  gap: 0.5rem;
}

.lang-btn {
  padding: 8px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background-color: transparent;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.lang-btn:hover {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.lang-btn.active {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-dark)
  );
  color: white;
  border-color: var(--primary-color);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.mobile-language-switcher {
  display: none;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.8rem 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.mobile-language-switcher .lang-btn {
  width: 100%;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  background-color: var(--darker-bg);
  padding: 1rem;
  border-top: 1px solid var(--border-color);
}

.mobile-menu a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.mobile-menu a:hover {
  color: var(--primary-color);
  padding-left: 10px;
}

.mobile-menu a:last-child {
  border-bottom: none;
}

/* Hero Section */
.hero {
  padding: 180px 0 100px;
  text-align: center;
  background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
  position: relative;
  overflow: hidden;
}

.hero:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(
      circle at 20% 50%,
      rgba(59, 130, 246, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(16, 185, 129, 0.05) 0%,
      transparent 50%
    );
  z-index: 0;
}

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

.subtitle {
  font-size: 1.3rem;
  max-width: 700px;
  margin: 0 auto 2.5rem;
  color: var(--text-secondary);
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.system-requirements {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background-color: var(--card-bg);
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-bottom: 3rem;
  box-shadow: var(--shadow);
}

.system-requirements i {
  color: var(--primary-color);
}

.tag {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-dark)
  );
  color: white;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.8rem;
  margin-left: 8px;
  font-weight: 600;
}

.hero-image {
  margin-top: 4rem;
  display: flex;
  justify-content: center;
}

.mockup {
  width: 100%;
  max-width: 800px;
  background-color: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.mockup-header {
  background-color: var(--darker-bg);
  padding: 1rem;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.mockup-dots {
  display: flex;
  gap: 8px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red {
  background-color: #ff5f56;
}

.dot.yellow {
  background-color: #ffbd2e;
}

.dot.green {
  background-color: #27ca3f;
}

.mockup-title {
  margin-left: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.mockup-content {
  padding: 2rem;
}

.task-input {
  background-color: var(--darker-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.task-input i {
  color: var(--primary-color);
}

.task-preview {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.task-step {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background-color: rgba(30, 41, 59, 0.5);
  border-radius: 8px;
  border-left: 4px solid var(--primary-color);
  transition: var(--transition);
  text-align: justify;
}

.task-step:hover {
  background-color: var(--card-hover);
  transform: translateX(5px);
}

.task-step i {
  font-size: 1.5rem;
  color: var(--primary-color);
}

.task-step h4 {
  margin-bottom: 0.3rem;
  font-size: 1rem;
}

.task-step p {
  margin-bottom: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Principles Section */
.principles {
  padding: 80px 0;
  background-color: var(--darker-bg);
  position: relative;
}

.principles:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--primary-color),
    transparent
  );
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.card {
  background-color: var(--card-bg);
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow);
  border-color: var(--primary-color);
}

.card i {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Skill Card Styles */
.skill-card {
  display: flex;
  flex-direction: column;
}

.skill-selector {
  margin-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
}

.skill-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.skill-tab {
  padding: 0.75rem 1rem;
  border: none;
  background-color: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
  border-bottom: 2px solid transparent;
  position: relative;
  bottom: -1px;
}

.skill-tab:hover {
  color: var(--primary-color);
}

.skill-tab.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.skill-content {
  display: flex;
  flex-direction: column;
}

.skill-panel {
  display: none;
  animation: fadeInUp 0.3s ease;
}

.skill-panel.active {
  display: block;
}

.skill-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.skill-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1rem;
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--primary-color);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  word-break: break-word;
  text-align: center;
}

.skill-item:hover {
  background-color: rgba(59, 130, 246, 0.2);
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.skill-item.community-item {
  gap: 0.5rem;
  color: var(--success-color);
  background-color: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.3);
}

.skill-item.community-item:hover {
  background-color: rgba(16, 185, 129, 0.2);
  border-color: var(--success-color);
}

.skill-item.community-item i {
  font-size: 0.8rem;
}

.skill-input-group {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.skill-input {
  flex: 1;
  padding: 0.6rem 0.8rem;
  background-color: var(--darker-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-color);
  font-size: 0.9rem;
  transition: var(--transition);
}

.skill-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.skill-input::placeholder {
  color: var(--text-secondary);
}

.skill-add-btn {
  padding: 0.6rem 1.2rem;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-dark)
  );
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.skill-add-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.skill-add-btn:active {
  transform: translateY(0);
}

.custom-skills-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.custom-skill-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background-color: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 6px;
  color: var(--primary-color);
  animation: fadeInUp 0.3s ease;
}

.custom-skill-item button {
  background: none;
  border: none;
  color: var(--danger-color);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0.25rem 0.5rem;
  transition: var(--transition);
}

.custom-skill-item button:hover {
  transform: scale(1.2);
}

/* Features Section */
.features {
  padding: 80px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background-color: var(--card-bg);
  padding: 2rem;
  border-radius: 12px;
  border-left: 4px solid var(--primary-color);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: var(--primary-color);
}

.feature-card h3 i {
  color: var(--primary-color);
  margin-right: 10px;
}

.feature-card ul {
  list-style-type: none;
  padding-left: 0;
}

.feature-card li {
  padding: 8px 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: 24px;
}

.feature-card li:before {
  content: "✓";
  color: var(--success-color);
  position: absolute;
  left: 0;
  font-weight: bold;
}

/* Functions Section */
.functions {
  padding: 80px 0;
  background-color: var(--darker-bg);
}

.functions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.function-card {
  background-color: var(--card-bg);
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.function-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: var(--primary-color);
}

.function-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* AI Models Section */
.ai-models {
  padding: 80px 0;
}

.providers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.provider-category {
  background-color: var(--card-bg);
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.provider-category:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: var(--primary-color);
}

.provider-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 1rem;
}

.provider-tag {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--primary-color);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  border: 1px solid rgba(59, 130, 246, 0.3);
  transition: var(--transition);
}

.provider-tag:hover {
  background-color: rgba(59, 130, 246, 0.2);
  transform: translateY(-2px);
}

/* Download Section */
.download {
  padding: 80px 0;
  background-color: var(--darker-bg);
}

.download-card {
  background-color: var(--card-bg);
  border-radius: 12px;
  padding: 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 3rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
}

.download-info p {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1rem;
}

.download-info i {
  color: var(--primary-color);
  width: 20px;
}

.download-note {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--warning-color);
  padding: 10px;
  background-color: rgba(245, 158, 11, 0.1);
  border-radius: 6px;
  border-left: 3px solid var(--warning-color);
}

.download-steps ol {
  padding-left: 1.5rem;
}

.download-steps li {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  padding-left: 0.5rem;
}

.download-steps li:before {
  content: "";
  display: none;
  width: 8px;
  height: 8px;
  background-color: var(--primary-color);
  border-radius: 50%;
  margin-right: 10px;
  margin-left: -18px;
}

/* FAQ Section */
.faq {
  padding: 80px 0;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.faq-item {
  background-color: var(--card-bg);
  padding: 2rem;
  border-radius: 12px;
  border-left: 4px solid var(--primary-color);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.faq-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.faq-question {
  color: var(--text-color);
  margin-bottom: 1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question:after {
  content: "";
  font-size: 1.5rem;
  color: var(--primary-color);
  transition: var(--transition);
}

.faq-item.active .faq-question:after {
  content: "";
  transform: rotate(180deg);
}

.faq-answer {
  color: var(--text-secondary);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  margin-top: 1rem;
}

/* Footer */
.footer {
  padding: 60px 0 30px;
  background-color: var(--darker-bg);
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-section h3 {
  margin-bottom: 1.5rem;
  color: var(--text-color);
  position: relative;
  display: inline-block;
}

.footer-section h3:after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 30px;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--secondary-color)
  );
  border-radius: 2px;
}

.footer-section ul {
  list-style-type: none;
  padding-left: 0;
}

.footer-section li {
  margin-bottom: 0.8rem;
}

.footer-section a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.footer-section a:hover {
  color: var(--primary-color);
  padding-left: 5px;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--card-bg);
  border-radius: 50%;
  color: var(--text-color);
  font-size: 1.2rem;
  transition: var(--transition);
}

.social-links a:hover {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

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

  h2 {
    font-size: 2rem;
  }

  .nav-links {
    display: none;
  }

  .language-switcher {
    display: none;
  }

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

  .mobile-menu.active {
    display: flex;
  }

  .mobile-menu.active .mobile-language-switcher {
    display: flex;
  }

  .hero {
    padding: 150px 0 80px;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .download-card {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 2rem;
  }

  .principles-grid,
  .features-grid,
  .functions-grid,
  .providers-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .mockup {
    transform: scale(0.9);
  }
}

@media (max-width: 768px) {
  .skill-tabs {
    flex-wrap: wrap;
  }

  .skill-tab {
    flex: 1;
    min-width: 70px;
    padding: 0.6rem 0.8rem;
    font-size: 0.85rem;
  }

  .skill-input-group {
    flex-direction: column;
  }

  .skill-input,
  .skill-add-btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.8rem;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  .download-card {
    padding: 1.5rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  .skill-selector {
    margin-top: 1rem;
    padding-top: 1rem;
  }

  .skill-tabs {
    flex-direction: column;
    gap: 0.3rem;
    margin-bottom: 0.75rem;
    border-bottom: none;
  }

  .skill-tab {
    width: 100%;
    padding: 0.6rem 0.8rem;
    font-size: 0.85rem;
    border-bottom: none;
    border: 1px solid var(--border-color);
    border-radius: 6px;
  }

  .skill-tab.active {
    border-color: var(--primary-color);
    border-bottom: none;
  }
}

/* ============================================================
   DOCS PAGE STYLES
   ============================================================ */

/* Layout */
.docs-layout {
  display: flex;
  max-width: 1400px;
  margin: 0 auto;
  padding: 80px 20px 0;
  min-height: 100vh;
}

.docs-sidebar {
  width: 260px;
  flex-shrink: 0;
  position: sticky;
  top: 80px;
  height: calc(100vh - 100px);
  overflow-y: auto;
  padding-right: 20px;
  border-right: 1px solid var(--border-color);
  margin-right: 40px;
  padding-top: 20px;
}

.docs-sidebar::-webkit-scrollbar {
  width: 4px;
}

.docs-sidebar::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 2px;
}

.docs-sidebar-toggle {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 100;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-dark)
  );
  color: white;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

/* Sidebar Navigation */
.docs-nav-section {
  margin-bottom: 24px;
}

.docs-nav-section h3 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 8px;
  padding-left: 12px;
}

.docs-nav-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.docs-nav-section li {
  margin: 2px 0;
}

.docs-nav-link {
  display: block;
  padding: 6px 12px;
  border-radius: 6px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
  border-left: 2px solid transparent;
}

.docs-nav-link:hover {
  color: var(--text-color);
  background-color: rgba(59, 130, 246, 0.08);
}

.docs-nav-link.active {
  color: var(--primary-color);
  background-color: rgba(59, 130, 246, 0.1);
  border-left-color: var(--primary-color);
  font-weight: 500;
}

/* Main Content */
.docs-content {
  flex: 1;
  min-width: 0;
  max-width: 860px;
  padding-bottom: 80px;
  padding-top: 20px;
}

.docs-section {
  padding-top: 30px;
  margin-top: -10px;
}

.docs-section:first-of-type {
  padding-top: 10px;
}

.docs-section h1 {
  font-size: 2.2rem;
  margin-bottom: 16px;
  background: linear-gradient(
    135deg,
    var(--text-color) 0%,
    var(--primary-light) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.docs-section h2 {
  font-size: 1.4rem;
  text-align: left;
  display: block;
  margin-bottom: 16px;
}

.docs-section h2:after {
  display: none;
}

.docs-section h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--text-color);
}

.docs-section h3 i {
  color: var(--primary-color);
  margin-right: 8px;
}

.docs-lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

/* Cards */
.docs-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 28px;
  margin-bottom: 24px;
  transition: var(--transition);
}

.docs-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow);
}

.docs-card p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.docs-card p:last-child {
  margin-bottom: 0;
}

.docs-card a {
  color: var(--primary-color);
  text-decoration: none;
}

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

/* Step Number */
.docs-step {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  padding: 16px;
  background-color: rgba(59, 130, 246, 0.04);
  border-radius: 8px;
  border-left: 3px solid var(--primary-color);
}

.docs-step:last-child {
  margin-bottom: 0;
}

.docs-step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-dark)
  );
  color: white;
  font-size: 0.9rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.docs-step h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.docs-step p {
  font-size: 0.9rem;
  margin-bottom: 0;
  color: var(--text-secondary);
}

/* Tips */
.docs-tip {
  display: flex;
  gap: 12px;
  padding: 14px 18px;
  background-color: rgba(59, 130, 246, 0.08);
  border-radius: 8px;
  border: 1px solid rgba(59, 130, 246, 0.2);
  margin-top: 20px;
}

.docs-tip i {
  color: var(--primary-color);
  font-size: 1.1rem;
  margin-top: 2px;
  flex-shrink: 0;
}

.docs-tip p {
  font-size: 0.9rem;
  margin-bottom: 0;
  color: var(--text-secondary);
}

/* Checklists */
.docs-checklist {
  list-style: none;
  padding: 0;
}

.docs-checklist li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(51, 65, 85, 0.4);
}

.docs-checklist li:last-child {
  border-bottom: none;
}

.docs-checklist li i {
  width: 20px;
  color: var(--primary-color);
  text-align: center;
}

/* Lists */
.docs-list {
  padding-left: 0;
  list-style: none;
}

.docs-list li {
  padding: 8px 0;
  color: var(--text-secondary);
  line-height: 1.6;
}

.docs-list li i {
  width: 20px;
  color: var(--primary-color);
  margin-right: 8px;
}

.docs-list strong {
  color: var(--text-color);
}

/* Code blocks */
.docs-code-block {
  background-color: var(--darker-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  margin: 16px 0;
  overflow-x: auto;
}

.docs-code-block pre {
  margin: 0;
}

.docs-code-block code {
  font-family: "SF Mono", "Fira Code", "Fira Mono", Menlo, Monaco, monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.docs-shortcut {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  background-color: rgba(59, 130, 246, 0.06);
  border-radius: 8px;
  border: 1px solid rgba(59, 130, 246, 0.15);
}

.docs-shortcut code {
  background-color: var(--darker-bg);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: 6px;
  font-family: "SF Mono", monospace;
  font-size: 0.85rem;
  color: var(--primary-color);
  font-weight: 600;
}

/* Download box */
.docs-download-box {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background-color: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 8px;
  margin: 16px 0;
}

.docs-download-box i {
  font-size: 1.5rem;
  color: var(--success-color);
}

.docs-link-large {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary-color) !important;
  word-break: break-all;
}

/* Provider tags on docs */
.docs-providers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.docs-provider-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
  transition: var(--transition);
}

.docs-provider-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.docs-provider-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-color);
  margin-bottom: 8px;
}

.docs-provider-card .provider-tag {
  display: inline-block;
  font-size: 0.75rem;
}

/* Category tags */
.docs-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0;
}

.docs-category-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid;
}

/* Table */
.docs-table-wrapper {
  overflow-x: auto;
  margin: 16px 0;
}

.docs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.docs-table th,
.docs-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.docs-table th {
  background-color: var(--darker-bg);
  color: var(--text-color);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.docs-table td {
  color: var(--text-secondary);
}

.docs-table tr:last-child td {
  border-bottom: none;
}

.docs-table a {
  color: var(--primary-color);
  text-decoration: none;
}

.docs-table a:hover {
  text-decoration: underline;
}

/* Example box */
.docs-example-box {
  background-color: rgba(59, 130, 246, 0.06);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: 8px;
  padding: 20px;
  margin-top: 16px;
}

.docs-example-box p {
  margin-bottom: 8px;
}

.docs-example-box ul {
  list-style: none;
  padding: 0;
}

.docs-example-box li {
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
  color: var(--text-secondary);
}

.docs-example-box li:before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--primary-color);
}

/* FAQ on docs */
.docs-faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.docs-faq-item {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 24px;
  transition: var(--transition);
}

.docs-faq-item:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow);
}

.docs-faq-item h3 {
  margin-bottom: 12px;
  font-size: 1.05rem;
  color: var(--text-color);
}

.docs-faq-item p {
  margin-bottom: 0;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Docs Screenshot Image */
.docs-screenshot {
  margin-top: 20px;
  text-align: center;
}

.docs-screenshot-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 24px 0;
}

.docs-screenshot-grid .docs-screenshot {
  margin-top: 0;
}

/* Screenshots inside list items */
.docs-list li .docs-screenshot {
  margin-top: 12px;
  margin-bottom: 8px;
}

.docs-list li .docs-screenshot img {
  max-width: 90%;
}

@media (max-width: 768px) {
  .docs-screenshot-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

.docs-screenshot img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  transition: var(--transition);
}

.docs-screenshot img:hover {
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.25);
  border-color: var(--primary-color);
}

.docs-caption {
  margin-top: 10px !important;
  font-size: 0.85rem !important;
  color: var(--text-secondary) !important;
  opacity: 0.8;
}

/* Community / Group Chat */
.docs-community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 24px;
}

.docs-community-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 32px;
  text-align: center;
  transition: var(--transition);
}

.docs-community-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.docs-community-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.docs-community-icon .fa-weixin {
  background: #07c160;
  color: white;
  padding: 12px;
  border-radius: 12px;
}

.docs-community-card h2 {
  font-size: 1.3rem;
  text-align: center;
  display: block;
  margin-bottom: 12px;
}

.docs-community-card h2:after {
  display: none;
}

.docs-community-card p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.docs-qr-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.docs-qr-image {
  width: 180px;
  height: 180px;
  border-radius: 12px;
  object-fit: cover;
  border: 2px solid var(--border-color);
  transition: var(--transition);
}

.docs-qr-image:hover {
  border-color: var(--primary-color);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  transform: scale(1.05);
}

/* Docs Footer */
.docs-footer {
  background-color: var(--darker-bg);
  border-top: 1px solid var(--border-color);
}

/* Docs Nav active state */
.nav-links a.active {
  color: var(--primary-color);
}

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

/* Docs Page Responsive */
@media (max-width: 1024px) {
  .docs-sidebar {
    display: none;
  }

  .docs-sidebar.open {
    display: block;
    position: fixed;
    top: 72px;
    left: 0;
    bottom: 0;
    width: 280px;
    background-color: var(--dark-bg);
    z-index: 200;
    padding: 20px;
    border-right: 1px solid var(--border-color);
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
  }

  .docs-sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .docs-content {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .docs-layout {
    padding: 60px 15px 0;
  }

  .docs-section h1 {
    font-size: 1.8rem;
  }

  .docs-providers-grid {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  }

  .docs-card {
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .docs-providers-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}