/* ============================================================
   Imperative WebMCP Playground - IdeaBoard
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  color: #242424;
  background: #f9f9f9;
  -webkit-font-smoothing: antialiased;
}

/* ---- Layout ---- */

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem 2rem 3rem;
}

/* ---- Page header ---- */

.page-header {
  margin-bottom: 1.25rem;
}

.page-header h1 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
  color: #242424;
}

.page-header p {
  margin: 0;
  color: #616161;
  font-size: 0.8125rem;
  line-height: 1.5;
}

/* ---- Split layout ---- */

.split-layout {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 1.25rem;
  align-items: start;
}

/* ---- Browser chrome ---- */

.browser-chrome {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #d0d0d0;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.browser-toolbar {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5rem 0.75rem;
  background: #f0f0f0;
  border-bottom: 1px solid #d0d0d0;
  user-select: none;
}

.browser-dots {
  display: flex;
  gap: 5px;
  flex-shrink: 0;
}

.browser-dots i {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.browser-dots i:nth-child(1) { background: #ff5f57; }
.browser-dots i:nth-child(2) { background: #febc2e; }
.browser-dots i:nth-child(3) { background: #28c840; }

.browser-url {
  flex: 1;
  background: #fff;
  border: 1px solid #d0d0d0;
  border-radius: 4px;
  padding: 4px 10px;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 11px;
  color: #616161;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Inner site header */

.site-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid #eaeaea;
}

.site-logo {
  width: 22px;
  height: 22px;
  border-radius: 5px;
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}

.site-name {
  font-size: 0.8125rem;
  font-weight: 600;
  color: #242424;
}

/* ---- Board area ---- */

.board {
  padding: 1rem 1.25rem 1.25rem;
  min-height: 340px;
  position: relative;
}

.board-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 280px;
  color: #999;
  font-size: 0.8125rem;
  font-style: italic;
}

.board-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: start;
}

/* ---- Sticky notes ---- */

.sticky {
  width: 150px;
  min-height: 100px;
  padding: 0.625rem 0.75rem;
  border-radius: 3px;
  box-shadow: 1px 2px 6px rgba(0, 0, 0, 0.1);
  font-size: 0.75rem;
  line-height: 1.45;
  color: #3d3200;
  position: relative;
  transition: background-color 0.3s, transform 0.2s, opacity 0.3s;
  animation: pop-in 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.sticky-id {
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  opacity: 0.45;
  margin-bottom: 0.25rem;
}

.sticky-text {
  word-wrap: break-word;
}

/* Color variants */

.sticky.yellow {
  background: #fff9c4;
  color: #3d3200;
}

.sticky.blue {
  background: #bbdefb;
  color: #0d2b4a;
}

.sticky.green {
  background: #c8e6c9;
  color: #1b3a1d;
}

.sticky.pink {
  background: #f8bbd0;
  color: #3d1026;
}

/* Animations */

@keyframes pop-in {
  0% {
    opacity: 0;
    transform: scale(0.6);
  }
  70% {
    transform: scale(1.05);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes fade-out {
  to {
    opacity: 0;
    transform: scale(0.85);
  }
}

.sticky.removing {
  animation: fade-out 0.25s ease-out forwards;
}

/* ---- Grouped clusters ---- */

.sticky-cluster {
  width: 100%;
  background: rgba(0, 0, 0, 0.03);
  border: 1px dashed #ccc;
  border-radius: 8px;
  padding: 0.625rem 0.75rem 0.75rem;
  animation: pop-in 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.cluster-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #777;
  margin-bottom: 0.5rem;
  padding-left: 2px;
}

.cluster-grid {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.cluster-grid .sticky {
  width: 135px;
  min-height: 85px;
}

/* ---- Tool count badge ---- */

.tool-badge {
  position: absolute;
  bottom: 0.75rem;
  right: 1rem;
  background: #242424;
  color: #fff;
  font-size: 10px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
  user-select: none;
  transition: opacity 0.3s;
}

/* ---- Code pane ---- */

.code-pane {
  background: #1e1e1e;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #333;
}

.code-tab-bar {
  display: flex;
  gap: 0;
  background: #252525;
  border-bottom: 1px solid #333;
}

.code-tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0.5rem 1rem;
  font-family: inherit;
  font-size: 11px;
  color: #888;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.code-tab:hover {
  color: #ccc;
}

.code-tab.active {
  color: #fff;
  border-bottom-color: #0078d4;
}

.code-panel {
  display: none;
}

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

pre.code-block,
pre.code-block code {
  font-family: "Cascadia Code", "Consolas", "Courier New", monospace;
  font-size: 12px;
}

.code-block {
  background: #1e1e1e;
  color: #d4d4d4;
  border-radius: 0;
  padding: 0.875rem 1rem;
  overflow: auto;
  max-height: 680px;
  line-height: 1.6;
  margin: 0;
  tab-size: 2;
  scrollbar-color: #555 #1e1e1e;
}

.code-block::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.code-block::-webkit-scrollbar-track {
  background: #1e1e1e;
}

.code-block::-webkit-scrollbar-thumb {
  background: #555;
  border-radius: 4px;
}

.code-block::-webkit-scrollbar-thumb:hover {
  background: #666;
}

.code-block code {
  background: none;
  padding: 0;
}

/* ---- Syntax coloring (VS Code dark theme) ---- */

.t-kw  { color: #569cd6; }              /* keywords: let, const, if, else, new, null */
.t-fn  { color: #dcdcaa; }              /* function names */
.t-str { color: #ce9178; }              /* strings */
.t-num { color: #b5cea8; }              /* numbers */
.t-cmt { color: #6a9955; font-style: italic; }  /* comments */
.t-prop { color: #9cdcfe; }             /* property names */
.t-op  { color: #d4d4d4; }              /* operators */

/* ---- API Reference section ---- */

.api-reference {
  margin-top: 2.5rem;
  border-top: 1px solid #e0e0e0;
  padding-top: 1.5rem;
}

.api-reference h2 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 1rem;
  color: #242424;
}

.api-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.api-table th,
.api-table td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid #e8e8e8;
  vertical-align: top;
}

.api-table th {
  font-weight: 600;
  color: #424242;
  background: #f5f5f5;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.api-table td {
  color: #424242;
}

.api-table code {
  background: #f0f0f0;
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 0.75rem;
}

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

.api-group-label {
  font-weight: 600;
  color: #242424;
  background: #fafafa;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

/* ---- Responsive ---- */

@media (max-width: 900px) {
  .split-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 1rem 1rem 2rem;
  }

  .board-grid {
    gap: 0.5rem;
  }

  .sticky {
    width: 130px;
    min-height: 80px;
  }
}