/* Pelvar demo — design system
   Paper: #FAFAF7  Ink: #1A1A1A  Muted: #6B6B66
   Rule:  #E5E5DE  Amber: #B8741A
*/

* { box-sizing: border-box; }

:root {
  --paper: #FAFAF7;
  --ink: #1A1A1A;
  --muted: #6B6B66;
  --rule: #E5E5DE;
  --amber: #B8741A;
  --amber-soft: #F4EAD9;
  --insert: #1A1A1A;
  --strike: #9A9A93;
  --maxw: 1080px;
  --maxw-tight: 760px;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-feature-settings: "ss01", "cv11";
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
}

a:hover { border-bottom-color: var(--ink); }

code, .mono {
  font-family: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.92em;
}

/* --- Topbar --- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 247, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--rule);
}

.topbar-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 24px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  border: none;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--ink);
  border-radius: 2px;
  font-family: "Inter";
  font-weight: 500;
  font-size: 14px;
  line-height: 1;
}

.brand-word { font-size: 16px; }

.tabs {
  display: flex;
  gap: 4px;
  justify-content: center;
}

.tab {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 2px;
  font-family: inherit;
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
  transition: color 120ms ease, border-color 120ms ease, background 120ms ease;
}

.tab:hover { color: var(--ink); }

.tab.is-active {
  color: var(--ink);
  border-color: var(--rule);
  background: #fff;
}

/* Next-tab pulse hint */
.tab.is-next {
  position: relative;
}
.tab.is-next::after {
  content: "";
  position: absolute;
  top: 4px;
  right: 6px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
  animation: pulse-dot 1.6s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 0.25; transform: scale(0.85); }
  50%      { opacity: 1.00; transform: scale(1.10); }
}

.tab-num {
  font-family: "JetBrains Mono", "SF Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.tab.is-active .tab-num { color: var(--ink); }

.tab-label { font-weight: 500; }

.topbar-meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.01em;
}

.dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink);
}

/* --- Panels --- */

main { display: block; }

.panel {
  display: none;
  padding: 56px 0 96px;
}

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

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.container-tight {
  max-width: var(--maxw-tight);
  margin: 0 auto;
  padding: 0 24px;
}

.kicker {
  font-family: "JetBrains Mono", "SF Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}

.display {
  font-family: "Inter";
  font-weight: 500;
  font-size: 48px;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
}

.lede {
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink);
  max-width: 640px;
  margin: 0 0 40px;
}

.meta-line {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 36px;
  letter-spacing: 0.01em;
}

.meta-line .sep { margin: 0 8px; opacity: 0.6; }

/* --- Harness layout (Tab 1) --- */

.harness-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 48px;
  align-items: start;
  margin-top: 8px;
}

.harness-form { display: flex; flex-direction: column; gap: 22px; }

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

.field label {
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.field input,
.field select {
  appearance: none;
  -webkit-appearance: none;
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 15px;
  color: var(--ink);
  width: 100%;
  outline: none;
  transition: border-color 120ms ease;
}

.field input:focus,
.field select:focus { border-color: var(--ink); }

.field input[readonly] { background: #F3F3EE; color: var(--ink); }

.field .hint {
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.5;
}

.select-wrap {
  position: relative;
}

.select-wrap::after {
  content: "↓";
  position: absolute;
  top: 50%;
  right: 14px;
  transform: translateY(-50%);
  font-size: 12px;
  color: var(--muted);
  pointer-events: none;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 2px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 120ms ease, transform 120ms ease;
  margin-top: 4px;
}

.btn-primary:hover { opacity: 0.92; }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: 2px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 120ms ease, background 120ms ease;
}
.btn-secondary:hover { border-color: var(--ink); background: #fff; }
.btn-arrow--left { font-size: 16px; }

.btn-label { letter-spacing: 0.01em; }
.btn-arrow { font-size: 16px; }

.gating-note {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--muted);
  border-left: 1px solid var(--rule);
  padding: 6px 0 6px 14px;
  margin-top: 4px;
}

.gating-note code {
  background: #F3F3EE;
  padding: 1px 6px;
  border-radius: 2px;
  font-size: 0.9em;
}

/* Counter row (replaces stacked status rows) */
.status-counters {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px;
  padding: 4px 0 6px;
  border-bottom: 1px dotted var(--rule);
  margin-bottom: 14px;
}

.counter-cell { display: flex; flex-direction: column; gap: 4px; }

.counter-label {
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.counter-value {
  font-family: "JetBrains Mono", "SF Mono", monospace;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  transition: color 160ms ease;
}

.counter-cell.is-active .counter-value { color: var(--amber); }
.counter-cell.is-done .counter-value { color: var(--ink); }

/* Terminal-style log stream */
.log-stream {
  position: relative;
  background: #14140F;
  color: #E5E5DE;
  border-radius: 2px;
  padding: 12px 14px 14px;
  font-family: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  font-size: 11.5px;
  line-height: 1.55;
  min-height: 168px;
  max-height: 168px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
  scroll-behavior: smooth;
}

.log-stream::-webkit-scrollbar { width: 4px; }
.log-stream::-webkit-scrollbar-thumb { background: #2A2A22; }

.log-line {
  display: flex;
  gap: 10px;
  align-items: baseline;
  opacity: 0;
  transform: translateY(2px);
  animation: log-in 220ms ease forwards;
}

.log-line--idle { opacity: 0.55; animation: none; transform: none; }
.log-line--idle strong { color: #FAFAF7; font-weight: 500; }

@keyframes log-in {
  to { opacity: 1; transform: translateY(0); }
}

.log-time {
  color: #6B6B66;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.log-msg { color: #E5E5DE; }
.log-msg .ok { color: #9FC79F; }
.log-msg .num { color: #E8B36A; font-weight: 500; }
.log-msg .warn { color: #B8741A; }

/* Blinking cursor */
.log-cursor {
  display: none;
  color: #E5E5DE;
  font-family: inherit;
  font-size: 11.5px;
  align-self: flex-start;
  margin-top: -2px;
  animation: blink 1.05s steps(2, start) infinite;
}

.log-cursor.is-running { display: inline-block; }

@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* Status panel */
.harness-status {
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 22px 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: sticky;
  top: 88px;
}

.status-title {
  font-family: "JetBrains Mono", "SF Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
}

.status-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 12px;
  margin-top: 4px;
  border-top: 1px dotted var(--rule);
  opacity: 0.55;
  transition: opacity 200ms ease;
}

.status-row.is-active { opacity: 1; }
.status-row.is-done { opacity: 1; }

.status-label {
  font-size: 11.5px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.status-value {
  font-size: 14px;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.status-value.status-num {
  font-family: "JetBrains Mono", "SF Mono", monospace;
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.status-final .status-value {
  font-weight: 500;
}

.status-final.is-done .status-value {
  color: var(--ink);
}

.methodology {
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.dotline {
  flex: 1;
  min-width: 18px;
  height: 0;
  border-top: 1px dotted var(--rule);
}

/* --- Brief body (shared by tabs 2, 3, 4) --- */

.brief-body { max-width: 720px; }

.brief-body h2 {
  font-family: "Inter";
  font-weight: 500;
  font-size: 22px;
  letter-spacing: -0.01em;
  margin: 36px 0 14px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
}

.brief-body h2:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.brief-body h3 {
  font-family: "Inter";
  font-weight: 500;
  font-size: 17px;
  letter-spacing: -0.005em;
  margin: 0 0 8px;
}

.brief-body p {
  font-size: 15.5px;
  line-height: 1.65;
  margin: 0 0 14px;
  color: var(--ink);
}

.brief-body p.muted { color: var(--muted); font-size: 14px; }

.family {
  padding: 20px 0;
  border-bottom: 1px dotted var(--rule);
}

.family-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 6px;
}

.family-rank {
  font-family: "JetBrains Mono", "SF Mono", monospace;
  font-size: 12px;
  color: var(--muted);
}

.family-meta {
  font-size: 12.5px;
  color: var(--muted);
  margin: 4px 0 0;
}

.family-meta .sep, .sep { margin: 0 8px; opacity: 0.6; }

.comp-table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0 18px;
  font-size: 14px;
}

.comp-table th, .comp-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--rule);
}

.comp-table th {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
  background: #F3F3EE;
  border-bottom-color: var(--rule);
}

.comp-table tr.flag-amber td {
  background: var(--amber-soft);
}

.flag-tag {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber);
  margin-left: 8px;
  vertical-align: middle;
  text-indent: -9999px;
  overflow: hidden;
}

.footnote {
  font-size: 13px;
  color: var(--muted);
  font-style: normal;
  border-top: 1px solid var(--rule);
  padding-top: 16px;
  margin-top: 24px;
  line-height: 1.6;
}

/* --- Markup tab --- */

.markup-block {
  background: #fff;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--amber);
  border-radius: 2px;
  padding: 22px 24px;
  margin-bottom: 22px;
}

.markup-tag {
  font-family: "JetBrains Mono", "SF Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 8px;
}

.strike {
  color: var(--strike);
  text-decoration: line-through;
  text-decoration-color: var(--strike);
}

.insert {
  background: #FBF6EA;
  padding: 10px 12px;
  border-radius: 2px;
  border-left: 2px solid var(--amber);
}

.insert-mark {
  font-family: "JetBrains Mono", "SF Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--amber);
  margin-right: 6px;
}

/* --- Certified brief (Tab 4) --- */

.cover-card {
  background: #fff;
  border: 1px solid var(--rule);
  padding: 56px 56px 48px;
  margin: 0 0 48px;
  position: relative;
}

.cover-card::before,
.cover-card::after {
  content: "";
  position: absolute;
  left: 24px;
  right: 24px;
  height: 0;
  border-top: 1px solid var(--ink);
}

.cover-card::before { top: 12px; border-top-style: solid; }
.cover-card::after { bottom: 12px; border-top-style: solid; }

.cover-mark {
  font-family: "Inter";
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.32em;
  color: var(--ink);
  text-align: center;
  margin-bottom: 6px;
}

.cover-meta {
  font-family: "JetBrains Mono", "SF Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
  margin-bottom: 36px;
}

.cover-title {
  font-family: "Inter";
  font-weight: 500;
  font-size: 38px;
  letter-spacing: -0.02em;
  text-align: center;
  margin: 0 0 6px;
  line-height: 1.1;
}

.cover-sub {
  font-family: "Inter";
  font-weight: 400;
  font-size: 17px;
  color: var(--muted);
  text-align: center;
  margin: 0 0 30px;
  letter-spacing: -0.005em;
}

.cover-rule {
  height: 0;
  border-top: 1px solid var(--rule);
  margin: 22px 0;
}

.cover-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px 36px;
}

.cover-key {
  font-family: "JetBrains Mono", "SF Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}

.cover-val {
  font-size: 14.5px;
  color: var(--ink);
  line-height: 1.4;
}

.cover-thesis {
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--ink);
  margin: 0;
  text-align: left;
}

.cover-methodology {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  justify-content: center;
}

.cover-methodology .dotline { min-width: 40px; }

.brief-final h2 {
  border-top: 1px solid var(--rule);
  padding-top: 28px;
}

.brief-final h2:first-child {
  border-top: 1px solid var(--rule);
  padding-top: 28px;
  margin-top: 0;
}

.changelist {
  margin: 8px 0 18px;
  padding-left: 18px;
}

.changelist li {
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 6px;
}

/* Continue bar between tabs */
.continue-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 48px;
  padding: 22px 24px;
  background: #fff;
  border: 1px solid var(--rule);
  border-top: 2px solid var(--ink);
  border-radius: 2px;
}

.continue-bar--end { border-top-color: var(--rule); }

.continue-meta { display: flex; flex-direction: column; gap: 2px; }

.continue-num {
  font-family: "JetBrains Mono", "SF Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
}

.continue-label {
  font-size: 14px;
  color: var(--ink);
  font-weight: 500;
}

.continue-btn { white-space: nowrap; }

/* --- Footer --- */

.footer {
  border-top: 1px solid var(--rule);
  padding: 28px 0 36px;
  background: var(--paper);
}

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  font-size: 12.5px;
  color: var(--muted);
}

.footer-right { display: inline-flex; gap: 0; align-items: center; }
.footer-right a { color: var(--muted); border-bottom: none; }
.footer-right a:hover { color: var(--ink); }

/* --- Responsive --- */

@media (max-width: 880px) {
  .topbar-inner {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 12px 18px;
  }
  .tabs { overflow-x: auto; justify-content: flex-start; }
  .topbar-meta { justify-content: flex-start; }

  .display { font-size: 36px; }
  .cover-title { font-size: 30px; }

  .harness-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .harness-status { position: static; }
  .log-stream { min-height: 140px; max-height: 200px; }

  .continue-bar {
    flex-direction: column;
    align-items: flex-start;
    padding: 18px;
    gap: 14px;
  }
  .continue-btn { width: 100%; justify-content: space-between; }

  .cover-card { padding: 36px 22px 28px; }
  .cover-grid { grid-template-columns: 1fr; gap: 18px; }

  .container, .container-tight, .footer-inner { padding-left: 18px; padding-right: 18px; }

  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  .display { font-size: 28px; }
  .lede { font-size: 17px; }
  .cover-card { padding: 28px 18px 22px; }
  .tab { padding: 8px 10px; font-size: 13px; }
}