.docs-layout {
  display: flex;
  gap: 20px;
  max-width: 1200px;
  margin: 80px auto 0;
  min-height: calc(100vh - 160px);
  padding: 0 20px;
}

.docs-sidebar {
  width: 280px;
  flex-shrink: 0;
  background: rgba(15, 15, 20, 0.95);
  border: 1px solid rgba(0, 212, 255, 0.1);
  border-radius: 10px;
  padding: 0;
  height: calc(100vh - 160px);
  overflow-y: auto;
  position: sticky;
  top: 100px;
}

.search-box {
  padding: 20px;
  border-bottom: 1px solid rgba(0, 212, 255, 0.08);
}

.search-input {
  width: 100%;
  padding: 10px 14px 10px 40px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: 6px;
  color: #fff;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
}

.search-input:focus {
  outline: none;
  border-color: #00d4ff;
}

.search-input::placeholder {
  color: rgba(200, 200, 200, 0.4);
}

.search-icon {
  position: absolute;
  left: 32px;
  top: 27px;
  color: #00d4ff;
  pointer-events: none;
  font-size: 0.85rem;
}

.docs-nav {
  padding: 10px 0;
}

.nav-group {
  margin-bottom: 5px;
}

.nav-level-1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  color: #00ff88;
  padding: 14px 20px 8px;
  letter-spacing: 2px;
  text-transform: uppercase;
  position: relative;
}

.nav-level-1::before {
  content: '◆';
  position: absolute;
  left: 8px;
  font-size: 0.5rem;
  color: #00d4ff;
}

.nav-level-2,
.nav-level-3,
.nav-level-4 {
  display: block;
  padding: 8px 20px 8px 30px;
  color: #d0d8e0;
  text-decoration: none;
  font-size: 0.9rem;
  font-family: 'Courier New', monospace;
  transition: all 0.2s;
  border-left: 2px solid transparent;
}

.nav-level-2:hover,
.nav-level-3:hover,
.nav-level-4:hover {
  color: #00d4ff;
  background: rgba(0, 212, 255, 0.05);
  border-left-color: #00d4ff;
}

.nav-content {
  cursor: pointer;
}

.nav-content.active {
  color: #00ff88;
  background: rgba(0, 255, 136, 0.08);
  border-left-color: #00ff88;
}

.nav-expandable {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  padding: 8px 20px 8px 30px;
  color: #d0d8e0;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  border-left: 2px solid transparent;
}

.nav-expandable:hover {
  color: #00d4ff;
  background: rgba(0, 212, 255, 0.05);
  border-left-color: #00d4ff;
}

.expand-icon {
  font-size: 0.6rem;
  color: #00ff88;
  transition: transform 0.2s;
}

.nav-expandable.expanded .expand-icon {
  transform: rotate(90deg);
}

.expandable-content {
  display: none;
  background: rgba(0, 0, 0, 0.1);
}

.expandable-content.show {
  display: block;
}

.nav-level-3 {
  padding-left: 45px;
  font-size: 0.85rem;
  color: rgba(180, 180, 180, 0.6);
  font-family: 'Orbitron', sans-serif;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.nav-level-4 {
  padding-left: 55px;
  font-size: 0.85rem;
}

.docs-content {
  flex: 1;
  background: rgba(15, 15, 20, 0.95);
  border: 1px solid rgba(0, 212, 255, 0.1);
  border-radius: 10px;
  overflow: hidden;
  min-height: calc(100vh - 160px);
}

.docs-content iframe {
  width: 100%;
  height: 100%;
  min-height: calc(100vh - 160px);
  border: none;
  display: block;
}

.content-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 500px;
  text-align: center;
  padding: 40px;
}

.placeholder-icon svg {
  width: 80px;
  height: 80px;
  color: #00d4ff;
  opacity: 0.5;
  margin-bottom: 20px;
}

.content-placeholder h2 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.4rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 10px;
  letter-spacing: 2px;
}

.content-placeholder p {
  color: rgba(200, 200, 200, 0.6);
  font-size: 0.95rem;
}

@media (max-width: 1024px) {
  .docs-layout {
    flex-direction: column;
  }

  .docs-sidebar {
    width: 100%;
    height: auto;
    position: relative;
    top: 0;
    max-height: 350px;
  }

  .docs-content {
    min-height: 500px;
  }

  .docs-content iframe {
    min-height: 500px;
  }
}

@media (max-width: 768px) {
  .search-input {
    padding: 8px 12px 8px 36px;
    font-size: 0.85rem;
  }

  .search-icon {
    left: 26px;
    top: 23px;
  }

  .nav-level-1 {
    padding: 12px 15px 6px;
    font-size: 0.7rem;
  }

  .nav-level-2,
  .nav-expandable {
    padding: 7px 15px 7px 25px;
    font-size: 0.85rem;
  }

  .nav-level-3 {
    padding-left: 35px;
  }

  .nav-level-4 {
    padding-left: 45px;
  }
}