/* ============================================================
   LinkUp Lab — Experimental Systems
   Workbench layout: sidebar tabs + viewer with terminal console
   ============================================================ */

:root {
  --bg-deep: #07090f;
  --bg-elev: #0e1320;
  --bg-card: #131929;
  --bg-card-2: #181f33;
  --bg-console: #060810;

  --accent: #4f7df5;
  --accent-2: #22d3a7;
  --accent-amber: #f5b14f;
  --accent-pink:  #f56ab5;
  --accent-glow:  rgba(79, 125, 245, 0.35);

  --text-primary:   #e8ecf4;
  --text-secondary: #8a93ad;
  --text-dim:       #5b6480;
  --text-mono:      #b9c4e0;

  --border:        rgba(140, 160, 220, 0.10);
  --border-strong: rgba(140, 160, 220, 0.20);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { min-height: 100%; }

body {
  font-family: var(--sans);
  background:
    radial-gradient(1000px 600px at 90% -10%, rgba(79,125,245,0.10), transparent 60%),
    radial-gradient(800px 500px at -10% 110%, rgba(245,106,181,0.06), transparent 60%),
    var(--bg-deep);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
  padding: 48px 24px 72px;
  /* faint grid */
  background-image:
    linear-gradient(rgba(140,160,220,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,160,220,0.025) 1px, transparent 1px),
    radial-gradient(1000px 600px at 90% -10%, rgba(79,125,245,0.10), transparent 60%),
    radial-gradient(800px 500px at -10% 110%, rgba(245,106,181,0.06), transparent 60%);
  background-size: 48px 48px, 48px 48px, auto, auto;
  background-color: var(--bg-deep);
}

.lab { max-width: 1180px; margin: 0 auto; }

/* ================ HEADER ================ */
.lab-head { margin-bottom: 40px; }

.head-row {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 28px; gap: 16px; flex-wrap: wrap;
}
.head-left { display: flex; align-items: center; gap: 14px; }
.lab-badge {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 11px; letter-spacing: 0.18em; font-weight: 600;
  color: var(--accent-amber);
  padding: 7px 12px;
  background: rgba(245,177,79,0.08);
  border: 1px solid rgba(245,177,79,0.25);
  border-radius: 6px;
}
.badge-pulse {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent-amber);
  box-shadow: 0 0 0 0 rgba(245,177,79,0.6);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0   rgba(245,177,79,0.55); }
  70%  { box-shadow: 0 0 0 10px rgba(245,177,79,0);    }
  100% { box-shadow: 0 0 0 0   rgba(245,177,79,0);    }
}
.head-path {
  font-family: var(--mono); font-size: 12px; color: var(--text-dim);
}
.head-right {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--text-dim);
}
.kbd {
  display: inline-grid; place-items: center;
  min-width: 22px; height: 22px; padding: 0 6px;
  font-family: var(--mono); font-size: 11px;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 5px;
  color: var(--text-mono);
}
.head-meta { margin-left: 6px; }

.lab-head h1 {
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 600; letter-spacing: -0.02em; line-height: 1.05;
  margin-bottom: 16px;
}
.grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-pink));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede {
  font-size: 16px; color: var(--text-secondary);
  max-width: 760px; margin-bottom: 32px;
}

/* classification strip */
.class-strip {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  padding: 16px;
  background: linear-gradient(180deg, var(--bg-elev), var(--bg-card));
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.class-item {
  display: flex; gap: 14px; align-items: start;
  padding: 4px 6px;
}
.class-tag {
  font-family: var(--mono); font-size: 11px; font-weight: 700;
  padding: 6px 8px; border-radius: 5px;
  letter-spacing: 0.06em;
  flex: none;
}
.c-exp { color: var(--accent);        background: rgba(79,125,245,0.10);  border: 1px solid rgba(79,125,245,0.25); }
.c-uns { color: var(--accent-pink);   background: rgba(245,106,181,0.10); border: 1px solid rgba(245,106,181,0.25); }
.c-int { color: var(--accent-2);      background: rgba(34,211,167,0.10);  border: 1px solid rgba(34,211,167,0.25); }
.class-item strong { font-size: 13px; display: block; margin-bottom: 2px; }
.class-item p { font-size: 12px; color: var(--text-secondary); }

/* ================ WORKBENCH ================ */
.workbench {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 16px;
  background: linear-gradient(180deg, var(--bg-elev), var(--bg-card));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin-bottom: 56px;
  position: relative;
  overflow: hidden;
}
.workbench::before {
  /* corner ticks */
  content: ""; position: absolute; inset: 8px;
  pointer-events: none;
  background:
    linear-gradient(var(--border-strong), var(--border-strong)) top left/12px 1px no-repeat,
    linear-gradient(var(--border-strong), var(--border-strong)) top left/1px 12px no-repeat,
    linear-gradient(var(--border-strong), var(--border-strong)) top right/12px 1px no-repeat,
    linear-gradient(var(--border-strong), var(--border-strong)) top right/1px 12px no-repeat,
    linear-gradient(var(--border-strong), var(--border-strong)) bottom left/12px 1px no-repeat,
    linear-gradient(var(--border-strong), var(--border-strong)) bottom left/1px 12px no-repeat,
    linear-gradient(var(--border-strong), var(--border-strong)) bottom right/12px 1px no-repeat,
    linear-gradient(var(--border-strong), var(--border-strong)) bottom right/1px 12px no-repeat;
}

/* sidebar */
.bench-side {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 12px;
  display: flex; flex-direction: column; gap: 8px;
  min-height: 100%;
}
.side-head {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  color: var(--text-dim); padding: 4px 6px 10px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}
.side-count {
  color: var(--accent); padding: 2px 8px;
  background: rgba(79,125,245,0.12); border-radius: 4px;
  font-weight: 700;
}

.proto-tab {
  display: grid; grid-template-columns: 36px 1fr 10px;
  align-items: center; gap: 12px;
  width: 100%; text-align: left;
  background: transparent; cursor: pointer;
  border: 1px solid transparent;
  padding: 12px 12px; border-radius: 10px;
  color: var(--text-secondary);
  transition: all .2s ease;
  font-family: inherit;
}
.proto-tab:hover {
  background: rgba(140,160,220,0.04);
  border-color: var(--border);
  color: var(--text-primary);
}
.proto-tab.active {
  background: linear-gradient(180deg, var(--bg-card), var(--bg-card-2));
  border-color: var(--border-strong);
  color: var(--text-primary);
  box-shadow: inset 2px 0 0 var(--accent);
}
.proto-key {
  display: grid; place-items: center;
  width: 36px; height: 36px; border-radius: 8px;
  font-family: var(--mono); font-weight: 700; font-size: 14px;
  color: var(--accent);
  background: rgba(79,125,245,0.10);
  border: 1px solid rgba(79,125,245,0.20);
}
.proto-tab[data-proto="B"] .proto-key { color: var(--accent-2);    background: rgba(34,211,167,0.10);  border-color: rgba(34,211,167,0.20); }
.proto-tab[data-proto="C"] .proto-key { color: var(--accent-pink); background: rgba(245,106,181,0.10); border-color: rgba(245,106,181,0.20); }
.proto-tab[data-proto="D"] .proto-key { color: var(--accent-amber); background: rgba(245,177,79,0.10); border-color: rgba(245,177,79,0.20); }

.proto-info { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.proto-name {
  font-size: 13.5px; font-weight: 600; color: inherit;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.proto-status {
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.04em; color: var(--text-dim);
}
.s-exp { color: var(--accent); }
.s-uns { color: var(--accent-pink); }
.s-int { color: var(--accent-2); }

.proto-signal {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--text-dim);
  transition: background .2s, box-shadow .2s;
}
.proto-tab.active .proto-signal {
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}

.side-foot {
  margin-top: auto; padding-top: 12px;
  display: flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 11px; color: var(--text-dim);
  border-top: 1px solid var(--border);
}
.dot.live {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 10px rgba(34,211,167,0.5);
  animation: blink 1.4s infinite;
}
@keyframes blink {
  50% { opacity: 0.4; }
}

/* viewer */
.bench-view {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex; flex-direction: column;
  min-width: 0;
}
.view-chrome {
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 14px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.01);
}
.chrome-dots { display: flex; gap: 6px; }
.chrome-dots span {
  width: 11px; height: 11px; border-radius: 50%;
  background: #2b3148; border: 1px solid var(--border-strong);
}
.chrome-dots span:nth-child(1) { background: #3a2a2a; border-color: #5a3434; }
.chrome-dots span:nth-child(2) { background: #3a342a; border-color: #5a4a34; }
.chrome-dots span:nth-child(3) { background: #2a3a30; border-color: #34543d; }

.chrome-addr {
  font-family: var(--mono); font-size: 12px;
  color: var(--text-mono);
  padding: 7px 14px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 6px;
  text-align: center;
  letter-spacing: 0.02em;
}
.addr-prefix { color: var(--text-dim); }
.addr-label { color: var(--accent); }

.ghost-btn {
  font-family: var(--mono); font-size: 11px; font-weight: 700;
  letter-spacing: 0.12em;
  background: rgba(34,211,167,0.08);
  color: var(--accent-2);
  border: 1px solid rgba(34,211,167,0.25);
  padding: 7px 12px; border-radius: 6px;
  cursor: pointer;
  transition: all .2s;
}
.ghost-btn:hover { background: rgba(34,211,167,0.18); }

/* panels */
.view-body { padding: 28px 28px 24px; }
.panel { display: none; animation: fadeIn .35s ease; }
.panel.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.p-head {
  display: flex; justify-content: space-between; align-items: start;
  gap: 18px; margin-bottom: 12px;
}
.p-tag {
  display: inline-block;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  color: var(--text-dim); margin-bottom: 6px;
}
.p-head h2 {
  font-size: 22px; font-weight: 600; letter-spacing: -0.01em;
}
.p-status {
  flex: none;
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  letter-spacing: 0.10em;
  padding: 6px 10px; border-radius: 6px;
  border: 1px solid transparent;
}
.p-status.s-exp { color: var(--accent);      background: rgba(79,125,245,0.10);  border-color: rgba(79,125,245,0.25); }
.p-status.s-uns { color: var(--accent-pink); background: rgba(245,106,181,0.10); border-color: rgba(245,106,181,0.25); }
.p-status.s-int { color: var(--accent-2);    background: rgba(34,211,167,0.10);  border-color: rgba(34,211,167,0.25); }

.p-desc { color: var(--text-secondary); font-size: 14.5px; margin-bottom: 22px; max-width: 720px; }

/* metrics */
.p-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  margin-bottom: 26px;
}
.metric {
  padding: 16px 18px;
  background: linear-gradient(180deg, var(--bg-card), var(--bg-card-2));
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  position: relative; overflow: hidden;
}
.metric::after {
  content: ""; position: absolute; left: 0; right: 0; top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.4;
}
.m-label {
  display: block; font-family: var(--mono);
  font-size: 10.5px; text-transform: uppercase;
  letter-spacing: 0.18em; color: var(--text-dim); margin-bottom: 8px;
}
.m-value {
  display: block; font-family: var(--mono);
  font-size: 28px; font-weight: 600; color: var(--text-primary);
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}
.m-sub {
  display: block; font-size: 11.5px; color: var(--text-dim);
  margin-top: 4px;
}

/* hypotheses */
.hyp-title {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 12px;
  display: flex; align-items: center; gap: 10px;
}
.hyp-title::before {
  content: ""; width: 14px; height: 1px; background: var(--accent);
}
.hyp-list {
  list-style: none;
  display: flex; flex-direction: column; gap: 8px;
  margin-bottom: 26px;
}
.hyp-list li {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px;
  background: rgba(140,160,220,0.03);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13.5px; color: var(--text-primary);
  transition: border-color .2s, background .2s;
}
.hyp-list li:hover {
  background: rgba(79,125,245,0.04);
  border-color: var(--border-strong);
}
.hyp-mark {
  flex: none;
  width: 6px; height: 6px;
  background: var(--accent); border-radius: 1px;
  transform: rotate(45deg);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* console */
.console {
  background: var(--bg-console);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.console-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 9px 14px;
  font-family: var(--mono); font-size: 11px;
  color: var(--text-dim);
  background: rgba(140,160,220,0.03);
  border-bottom: 1px solid var(--border);
  letter-spacing: 0.08em;
}
.console-status {
  text-transform: uppercase;
}
.console.running .console-status { color: var(--accent-2); }
.console-body {
  font-family: var(--mono); font-size: 12.5px;
  color: var(--text-mono);
  padding: 14px;
  min-height: 140px;
  max-height: 220px;
  overflow-y: auto;
  line-height: 1.7;
}
.console-body .line { display: block; opacity: 0; animation: typeIn .15s forwards; }
.console-body .l-time { color: var(--text-dim); margin-right: 10px; }
.console-body .l-ok   { color: var(--accent-2); }
.console-body .l-warn { color: var(--accent-amber); }
.console-body .l-err  { color: var(--accent-pink); }
.console-body .l-info { color: var(--accent); }
@keyframes typeIn { to { opacity: 1; } }

.console-body::-webkit-scrollbar { width: 6px; }
.console-body::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }

/* ================ INSIGHT ================ */
.insight {
  display: grid; grid-template-columns: 6px 1fr; gap: 22px;
  background: linear-gradient(180deg, var(--bg-card), var(--bg-card-2));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 30px;
  margin-bottom: 40px;
}
.insight-mark {
  background: linear-gradient(180deg, var(--accent), var(--accent-pink));
  border-radius: 3px;
  box-shadow: 0 0 20px var(--accent-glow);
}
.insight-tag {
  display: inline-block;
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--text-dim); margin-bottom: 10px;
}
.insight-body p {
  font-size: 15px; color: var(--text-secondary);
  margin-bottom: 18px; max-width: 760px;
}
.insight-body blockquote {
  font-size: 17px; font-style: italic;
  color: var(--text-primary);
  padding: 16px 20px;
  border-left: 2px solid var(--accent);
  background: rgba(79,125,245,0.05);
  border-radius: 0 8px 8px 0;
  max-width: 720px;
}

/* footer */
.lab-foot {
  display: flex; justify-content: center; align-items: center; gap: 10px;
  font-size: 12px; color: var(--text-dim);
  padding-top: 22px; border-top: 1px solid var(--border);
}
.lab-foot .sep { opacity: 0.5; }

/* ================ RESPONSIVE ================ */
@media (max-width: 860px) {
  .workbench { grid-template-columns: 1fr; }
  .bench-side { flex-direction: row; flex-wrap: wrap; }
  .side-head { width: 100%; }
  .proto-tab { flex: 1 1 220px; }
  .side-foot { width: 100%; }
  .class-strip { grid-template-columns: 1fr; }
  .p-grid { grid-template-columns: 1fr; }
  .p-head { flex-direction: column; align-items: start; }
  .view-body { padding: 22px 18px; }
}
@media (max-width: 540px) {
  body { padding: 28px 14px 60px; }
  .chrome-addr { font-size: 11px; padding: 6px 10px; }
  .head-right { display: none; }
}