/* ==========================================================
   SILICON LAB / HARDWARE WORKBENCH STYLES — pages/lab.html
   ========================================================== */

.lab-main {
  padding: 40px 0 80px;
}

.lab-hero {
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 36px;
}

.lab-title-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  flex-wrap: wrap;
}

.lab-hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  margin: 8px 0 12px;
  letter-spacing: -0.04em;
  color: var(--ink);
}

.lab-desc {
  color: #b1bdb4;
  font-size: 0.95rem;
  max-width: 720px;
  line-height: 1.6;
  margin: 0;
}

.lab-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(56, 255, 139, 0.08);
  border: 1px solid rgba(56, 255, 139, 0.35);
  color: var(--accent);
  padding: 6px 12px;
  border-radius: 2px;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
}

.lab-badge .pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulseDot 1.5s ease-in-out infinite;
}

/* ──────────────────────────────────────────────────────────
   STATION NAVIGATION TABS
   ────────────────────────────────────────────────────────── */
.lab-tabs-nav {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
  overflow-x: auto;
}

.lab-tab-btn {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: "DM Mono", monospace;
  font-size: 0.78rem;
  padding: 10px 18px;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}

.lab-tab-btn:hover {
  border-color: rgba(56, 255, 139, 0.5);
  color: var(--ink);
  background: rgba(56, 255, 139, 0.04);
}

.lab-tab-btn.active {
  background: rgba(56, 255, 139, 0.12);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 16px rgba(56, 255, 139, 0.15);
}

.lab-tab-btn .tab-num {
  opacity: 0.6;
  font-size: 0.7rem;
}

/* ──────────────────────────────────────────────────────────
   STATION CONTAINER & CARDS
   ────────────────────────────────────────────────────────── */
.lab-station {
  display: none;
  animation: fadeIn 0.25s ease-out;
}

.lab-station.active {
  display: block;
}

.station-header {
  margin-bottom: 24px;
}

.station-header h2 {
  font-size: 1.5rem;
  margin: 6px 0 8px;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.station-header p {
  color: #8ba192;
  font-size: 0.88rem;
  margin: 0;
  max-width: 800px;
}

.workbench-card {
  background: #060b08;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  padding: 24px;
  margin-bottom: 28px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
  position: relative;
}

.card-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.card-title {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ──────────────────────────────────────────────────────────
   STATION 1: RISC-V 5-STAGE PIPELINE SIMULATOR
   ────────────────────────────────────────────────────────── */
.sim-controls-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
  background: rgba(255, 255, 255, 0.02);
  padding: 12px 16px;
  border-radius: 3px;
  border: 1px solid var(--line);
}

.sim-btn {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: "DM Mono", monospace;
  font-size: 0.78rem;
  padding: 8px 14px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.sim-btn:hover {
  background: var(--accent);
  color: #031007;
  box-shadow: 0 0 15px rgba(56, 255, 139, 0.3);
}

.sim-btn.secondary {
  border-color: var(--line);
  color: var(--muted);
}

.sim-btn.secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(56, 255, 139, 0.05);
  box-shadow: none;
}

.program-select-label {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.program-select {
  background: #020503;
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: "DM Mono", monospace;
  font-size: 0.78rem;
  padding: 7px 12px;
  border-radius: 2px;
  outline: none;
}

.program-select:focus {
  border-color: var(--accent);
}

.sim-stats-cluster {
  margin-left: auto;
  display: flex;
  gap: 16px;
  font-size: 0.72rem;
  color: var(--muted);
}

.sim-stat-item strong {
  color: var(--accent);
  font-weight: 600;
}

/* Pipeline Stage Diagram */
.pipeline-diagram-wrap {
  background: #020503;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 20px 14px;
  margin-bottom: 24px;
  overflow-x: auto;
}

.pipeline-stages-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(140px, 1fr));
  gap: 12px;
}

.stage-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 14px 12px;
  position: relative;
  transition: all 0.3s ease;
  min-height: 160px;
  display: flex;
  flex-direction: column;
}

.stage-box.is-active {
  border-color: rgba(56, 255, 139, 0.6);
  background: rgba(56, 255, 139, 0.04);
  box-shadow: 0 0 16px rgba(56, 255, 139, 0.1);
}

.stage-box.is-stalled {
  border-color: rgba(255, 179, 71, 0.7);
  background: rgba(255, 179, 71, 0.05);
  box-shadow: 0 0 16px rgba(255, 179, 71, 0.15);
}

.stage-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding-bottom: 6px;
  margin-bottom: 10px;
}

.stage-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
}

.stage-role {
  font-size: 0.6rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.stage-inst-badge {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6px 8px;
  border-radius: 2px;
  font-size: 0.75rem;
  color: #fff;
  margin-bottom: 8px;
  word-break: break-word;
  min-height: 28px;
  display: flex;
  align-items: center;
}

.stage-box.is-stalled .stage-inst-badge {
  border-color: #ffb347;
  color: #ffb347;
}

.stage-details {
  font-size: 0.68rem;
  color: #8ba192;
  line-height: 1.5;
  margin-top: auto;
}

.hazard-bubble-banner {
  background: rgba(255, 179, 71, 0.15);
  border: 1px solid rgba(255, 179, 71, 0.4);
  color: #ffb347;
  padding: 6px 12px;
  border-radius: 2px;
  font-size: 0.72rem;
  margin-bottom: 16px;
  display: none;
  align-items: center;
  gap: 8px;
}

.hazard-bubble-banner.active {
  display: flex;
}

.forwarding-banner {
  background: rgba(56, 255, 139, 0.12);
  border: 1px solid rgba(56, 255, 139, 0.4);
  color: var(--accent);
  padding: 6px 12px;
  border-radius: 2px;
  font-size: 0.72rem;
  margin-bottom: 16px;
  display: none;
  align-items: center;
  gap: 8px;
}

.forwarding-banner.active {
  display: flex;
}

/* RegFile & Hazard Units Grid */
.sim-subgrid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
}

@media (max-width: 880px) {
  .sim-subgrid {
    grid-template-columns: 1fr;
  }
}

.regfile-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

@media (max-width: 600px) {
  .regfile-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.reg-cell {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  padding: 8px 10px;
  border-radius: 2px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
  transition: all 0.25s;
}

.reg-cell.highlight {
  border-color: var(--accent);
  background: rgba(56, 255, 139, 0.1);
  box-shadow: 0 0 10px rgba(56, 255, 139, 0.2);
}

.reg-name {
  color: var(--muted);
}

.reg-val {
  color: var(--ink);
  font-weight: 500;
}

/* ──────────────────────────────────────────────────────────
   STATION 2: MEMRISTOR / CIM SANDBOX
   ────────────────────────────────────────────────────────── */
.cim-layout-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 28px;
}

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

.crossbar-workbench {
  background: #020503;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 20px;
}

.crossbar-controls-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 10px;
}

.crossbar-table {
  border-collapse: separate;
  border-spacing: 6px;
  width: 100%;
}

.crossbar-table th, .crossbar-table td {
  text-align: center;
  vertical-align: middle;
}

.v-toggle-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: "DM Mono", monospace;
  font-size: 0.72rem;
  padding: 6px 10px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.2s;
  width: 60px;
}

.v-toggle-btn.active {
  background: rgba(56, 255, 139, 0.15);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 8px rgba(56, 255, 139, 0.2);
}

.mem-cell-btn {
  width: 100%;
  aspect-ratio: 1.1;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--ink);
  font-family: "DM Mono", monospace;
  font-size: 0.75rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  transition: all 0.2s ease;
  min-height: 52px;
}

.mem-cell-btn:hover {
  border-color: rgba(56, 255, 139, 0.6);
  transform: scale(1.04);
}

.mem-cell-btn .cell-state {
  font-size: 0.8rem;
  font-weight: 600;
}

.mem-cell-btn .cell-cond {
  font-size: 0.6rem;
  color: var(--muted);
}

/* 8 Conductance Levels Colors (3-bit quantization) */
.g-lvl-0 { background: rgba(56, 255, 139, 0.02); border-color: rgba(255, 255, 255, 0.08); color: #555; }
.g-lvl-1 { background: rgba(56, 255, 139, 0.06); border-color: rgba(56, 255, 139, 0.2); color: #8ba192; }
.g-lvl-2 { background: rgba(56, 255, 139, 0.12); border-color: rgba(56, 255, 139, 0.3); color: #a9cfb5; }
.g-lvl-3 { background: rgba(56, 255, 139, 0.18); border-color: rgba(56, 255, 139, 0.4); color: #b7e8c6; }
.g-lvl-4 { background: rgba(56, 255, 139, 0.25); border-color: rgba(56, 255, 139, 0.55); color: #c9ffd9; }
.g-lvl-5 { background: rgba(56, 255, 139, 0.32); border-color: rgba(56, 255, 139, 0.7); color: #dbffea; }
.g-lvl-6 { background: rgba(56, 255, 139, 0.42); border-color: rgba(56, 255, 139, 0.85); color: #ffffff; }
.g-lvl-7 { background: rgba(56, 255, 139, 0.55); border-color: var(--accent); color: #000; font-weight: bold; box-shadow: 0 0 10px rgba(56, 255, 139, 0.3); }

.column-current-badge {
  background: rgba(56, 255, 139, 0.08);
  border: 1px solid rgba(56, 255, 139, 0.3);
  padding: 6px 4px;
  border-radius: 2px;
  font-size: 0.72rem;
  color: var(--accent);
}

.cim-neurosim-card {
  background: #020503;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 20px;
}

.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.8rem;
}

.metric-row:last-child {
  border-bottom: none;
}

.metric-label {
  color: #8ba192;
}

.metric-val {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
}

/* ──────────────────────────────────────────────────────────
   STATION 3: SETUP & HOLD TIMING SLACK ANALYZER
   ────────────────────────────────────────────────────────── */
.timing-diagram-box {
  background: #020503;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 20px;
  margin-bottom: 24px;
}

.timing-svg-wrap {
  width: 100%;
  max-width: 800px;
  margin: 0 auto 20px;
}

.timing-sliders-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
  background: rgba(255, 255, 255, 0.02);
  padding: 18px;
  border-radius: 3px;
  border: 1px solid var(--line);
}

.slider-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.slider-label-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--muted);
}

.slider-label-row span:last-child {
  color: var(--accent);
  font-weight: 600;
}

.timing-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.15);
  outline: none;
}

.timing-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 6px var(--accent);
}

.slack-verdict-banner {
  padding: 16px 20px;
  border-radius: 3px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-family: "DM Mono", monospace;
}

.slack-verdict-banner.pass {
  background: rgba(56, 255, 139, 0.1);
  border: 1px solid rgba(56, 255, 139, 0.5);
  color: var(--accent);
}

.slack-verdict-banner.violation {
  background: rgba(255, 95, 86, 0.12);
  border: 1px solid rgba(255, 95, 86, 0.6);
  color: #ff5f56;
  animation: pulseViolation 1s infinite alternate;
}

@keyframes pulseViolation {
  from { box-shadow: 0 0 10px rgba(255, 95, 86, 0.1); }
  to { box-shadow: 0 0 25px rgba(255, 95, 86, 0.35); }
}

.slack-math-row {
  font-size: 0.8rem;
  line-height: 1.6;
}

.slack-badge {
  font-size: 1.1rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 2px;
  border: 1px solid currentColor;
}