/* ==========================================================================
   Lastbrowser Web Platform - Docs, Hub & Content Layouts
   ========================================================================== */

/* --- Docs Layout --- */
.docs-layout {
  display: grid;
  grid-template-columns: 260px 1fr 220px;
  gap: 40px;
  padding: 40px 0 80px;
  align-items: start;
}

.docs-layout.no-toc {
  grid-template-columns: 260px 1fr;
}

.docs-sidebar {
  position: sticky;
  top: 90px;
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-lg);
  padding: 24px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}

.docs-sidebar h4 {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 12px;
  margin-top: 18px;
}

.docs-sidebar h4:first-child {
  margin-top: 0;
}

.docs-sidebar ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.docs-sidebar a {
  display: block;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s ease;
}

.docs-sidebar a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.docs-sidebar a.active {
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.08);
  font-weight: 700;
}

.docs-content {
  min-width: 0;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 24px;
}

.breadcrumbs a {
  color: var(--muted);
}

.breadcrumbs span.current {
  color: var(--text);
  font-weight: 600;
}

.docs-content h1 {
  font-size: clamp(32px, 4vw, 44px);
  margin-bottom: 16px;
}

.docs-content h2 {
  font-size: 26px;
  margin: 40px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--stroke);
}

.docs-content h3 {
  font-size: 20px;
  margin: 28px 0 12px;
}

.docs-content p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.docs-content ul, .docs-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.docs-content li {
  margin-bottom: 8px;
}

.docs-toc {
  position: sticky;
  top: 90px;
  background: transparent;
  border-left: 1px solid var(--stroke);
  padding: 0 0 0 16px;
}

.docs-toc h4 {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 12px;
}

.docs-toc ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.docs-toc a {
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.15s ease;
}

.docs-toc a:hover {
  color: var(--cyan);
}

/* --- Code Blocks --- */
.code-block {
  background: #05070D;
  border: 1px solid var(--stroke);
  border-radius: var(--radius-md);
  margin: 20px 0;
  overflow: hidden;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 16px;
  background: rgba(16, 24, 39, 0.9);
  border-bottom: 1px solid var(--stroke);
  font-size: 12px;
  color: var(--muted);
  font-weight: 600;
  font-family: monospace;
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--stroke);
  color: var(--muted);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.copy-btn:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.copy-btn.copied {
  background: rgba(124, 255, 107, 0.15);
  border-color: var(--green);
  color: var(--green);
}

pre {
  padding: 16px;
  overflow-x: auto;
  font-family: Consolas, Monaco, "Courier New", Courier, monospace;
  font-size: 13px;
  line-height: 1.5;
  color: #E2E8F0;
}

code:not(pre code) {
  background: rgba(16, 24, 39, 0.9);
  border: 1px solid var(--stroke);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 13px;
  color: var(--cyan);
}

/* --- Keyboard Shortcuts --- */
.kbd {
  display: inline-block;
  padding: 3px 8px;
  font-size: 12px;
  font-family: monospace;
  font-weight: 700;
  line-height: 1;
  color: var(--text);
  background: rgba(16, 24, 39, 0.9);
  border: 1px solid var(--stroke);
  border-radius: 6px;
  box-shadow: 0 2px 0 var(--stroke);
}

/* --- MCP Hub & Skills --- */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 20px;
  margin: 30px 0;
}

.skill-card {
  background: var(--card-bg);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: all 0.2s ease;
}

.skill-card:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.skill-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.skill-card h4 {
  font-size: 16px;
  color: var(--text);
}

.skill-card p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 12px;
}

/* --- Roadmap Kanban --- */
.kanban-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 40px 0;
}

.kanban-col {
  background: rgba(16, 24, 39, 0.6);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.kanban-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--stroke);
}

.kanban-header h3 {
  font-size: 16px;
}

.kanban-items {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.kanban-card {
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow-sm);
}

.kanban-card h4 {
  font-size: 14px;
  margin-bottom: 6px;
}

.kanban-card p {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

/* --- Blog Cards --- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 30px;
  margin: 40px 0;
}

.blog-card {
  background: var(--card-bg);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  border-color: var(--cyan);
  transform: translateY(-4px);
}

.blog-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.blog-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
  line-height: 1.3;
}

.blog-card p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 18px;
  flex: 1;
}

.blog-meta {
  font-size: 12px;
  color: var(--subtle);
  display: flex;
  align-items: center;
  gap: 12px;
}

@media (max-width: 980px) {
  .docs-layout {
    grid-template-columns: 1fr;
  }
  .docs-sidebar, .docs-toc {
    display: none;
  }
  .kanban-board {
    grid-template-columns: 1fr;
  }
}