/*
 * TESSERIX — Cartographic Precision Design System
 * =================================================
 * The reasoning layer your knowledge deserves.
 *
 * AESTHETIC: True black + warm white. No color accents — pure contrast.
 * Precise, typographic, confident. Not AI slop.
 *
 * PALETTE
 * ─────────────────────────────────────────────────────────────────
 * --ink            : #080808  (true black)
 * --ink-2          : #0F0F0F  (card backgrounds)
 * --ink-3          : #161616  (secondary surfaces)
 * --ink-4          : #1E1E1E  (hover states)
 * --accent         : #F5F0E8  (warm white — primary accent)
 * --accent-dim     : rgba(245,240,232,0.10)
 * --accent-border  : rgba(245,240,232,0.18)
 * --accent-glow    : rgba(245,240,232,0.05)
 * --sage           : #3A6B45  (positive/success state)
 * --sage-dim       : rgba(58,107,69,0.15)
 * --sage-text      : #6FAB7A
 * --sage-border    : rgba(58,107,69,0.3)
 * --signal-red     : #8B3A3A
 * --signal-red-text: #D4776E
 * --signal-red-dim : rgba(139,58,58,0.12)
 * --parchment      : #F5F0E8  (primary text — warm white)
 * --parchment-muted: #8A8880  (secondary text)
 * --parchment-dim  : #4A4845  (tertiary / disabled)
 * --rule           : rgba(245,240,232,0.07) (subtle dividers)
 * --rule-strong    : rgba(245,240,232,0.13)
 *
 * TYPOGRAPHY
 * ─────────────────────────────────────────────────────────────────
 * Display: Playfair Display — high-contrast thick/thin strokes, editorial weight
 * Body: IBM Plex Sans — precise, modern, engineered for screens
 * Mono: IBM Plex Mono — for code, keys, traces
 */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,500;0,600;0,700;1,500;1,600&family=IBM+Plex+Sans:wght@300;400;500;600&family=IBM+Plex+Mono:wght@300;400;500&display=swap');

/* ═══════════════════════════════════════════════════════════════
   RESET + ROOT
   ═══════════════════════════════════════════════════════════════ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --ink:             #080808;
  --ink-2:           #0F0F0F;
  --ink-3:           #161616;
  --ink-4:           #1E1E1E;

  /* Primary accent: warm white */
  --amber:           #F5F0E8;
  --amber-bright:    #FFFFFF;
  --amber-dim:       rgba(245,240,232,0.10);
  --amber-border:    rgba(245,240,232,0.18);
  --amber-glow:      rgba(245,240,232,0.05);

  /* Aliases so existing references work */
  --accent:          #F5F0E8;
  --accent-dim:      rgba(245,240,232,0.10);
  --accent-border:   rgba(245,240,232,0.18);
  --accent-glow:     rgba(245,240,232,0.05);

  --sage:            #3A6B45;
  --sage-dim:        rgba(58,107,69,0.15);
  --sage-text:       #6FAB7A;
  --sage-border:     rgba(58,107,69,0.3);

  --signal-red:      #8B3A3A;
  --signal-red-text: #D4776E;
  --signal-red-dim:  rgba(139,58,58,0.12);

  --parchment:       #F5F0E8;
  --parchment-muted: #8A8880;
  --parchment-dim:   #4A4845;

  --rule:            rgba(245,240,232,0.07);
  --rule-strong:     rgba(245,240,232,0.13);

  --font-display:    'Playfair Display', Georgia, serif;
  --font-body:       'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:       'IBM Plex Mono', 'Fira Code', 'SF Mono', monospace;

  --radius-sm:       6px;
  --radius:          10px;
  --radius-lg:       16px;
  --radius-xl:       22px;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--ink);
  color: var(--parchment);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ═══════════════════════════════════════════════════════════════
   GEOMETRIC GRID OVERLAY (the "cartographic" texture)
   ═══════════════════════════════════════════════════════════════ */

.tx-grid-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(232,224,208,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232,224,208,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: -1px -1px;
}

.tx-grid-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% -10%,
    rgba(200,150,58,0.06) 0%,
    transparent 70%);
}

/* ═══════════════════════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════════════════════ */

.tx-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14,13,11,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--rule-strong);
}

.tx-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.tx-logo {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--parchment);
  text-decoration: none;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}

.tx-logo em {
  font-style: italic;
  color: var(--amber);
}

.tx-logo sup {
  font-family: var(--font-body);
  font-size: 0.45rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--parchment-dim);
  vertical-align: super;
  margin-left: 0.15em;
}

.tx-nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex: 1;
}

.tx-nav-link {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--parchment-dim);
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: color 0.15s;
}

.tx-nav-link:hover { color: var(--parchment); }
.tx-nav-link.active { color: var(--amber); }

.tx-nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}

/* ═══════════════════════════════════════════════════════════════
   TYPOGRAPHY
   ═══════════════════════════════════════════════════════════════ */

.tx-display {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.08;
  color: var(--parchment);
}

.tx-display-lg { font-size: clamp(2.8rem, 7vw, 5.5rem); }
.tx-display-md { font-size: clamp(1.8rem, 4vw, 3rem); }
.tx-display-sm { font-size: clamp(1.3rem, 2.5vw, 1.85rem); }
.tx-display-xs { font-size: 1.15rem; }

.tx-display em, .tx-display i {
  font-style: italic;
  color: var(--amber);
}

.tx-eyebrow {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.75rem;
}

.tx-eyebrow-dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--amber);
  margin-right: 0.5rem;
  vertical-align: middle;
  animation: tx-pulse 2s ease-in-out infinite;
}

@keyframes tx-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

.tx-body {
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--parchment-muted);
}

.tx-body strong { color: var(--parchment); font-weight: 500; }
.tx-body a { color: var(--amber); text-decoration: none; }
.tx-body a:hover { text-decoration: underline; }

.tx-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--parchment-dim);
}

/* ═══════════════════════════════════════════════════════════════
   LAYOUT
   ═══════════════════════════════════════════════════════════════ */

.tx-page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 1;
}

.tx-container {
  max-width: 620px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.tx-container-wide {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.tx-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--rule-strong), transparent);
  margin: 0;
}

.tx-divider-v {
  width: 1px;
  background: var(--rule-strong);
  align-self: stretch;
}

/* ═══════════════════════════════════════════════════════════════
   CARDS + SURFACES
   ═══════════════════════════════════════════════════════════════ */

.tx-card {
  background: var(--ink-2);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.tx-card-inner {
  padding: 1.5rem;
}

.tx-card-sm { border-radius: var(--radius); }
.tx-card-xl { border-radius: var(--radius-xl); }

.tx-card-accent {
  background: var(--ink-2);
  border: 1px solid var(--amber-border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.tx-card-accent::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--amber), transparent);
  opacity: 0.5;
}

.tx-card-hover {
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s;
}

.tx-card-hover:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
  border-color: var(--amber-border);
}

/* ═══════════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════════ */

.tx-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: all 0.18s;
  text-decoration: none;
  border: none;
  white-space: nowrap;
}

.tx-btn-primary {
  background: var(--amber);
  color: var(--ink);
}

.tx-btn-primary:hover {
  background: var(--amber-bright);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(200,150,58,0.3);
}

.tx-btn-primary:active {
  transform: scale(0.98) translateY(0);
}

.tx-btn-ghost {
  background: transparent;
  border: 1px solid var(--rule-strong);
  color: var(--parchment-muted);
}

.tx-btn-ghost:hover {
  border-color: var(--amber-border);
  color: var(--parchment);
}

.tx-btn-outline {
  background: var(--amber-dim);
  border: 1px solid var(--amber-border);
  color: var(--amber);
}

.tx-btn-outline:hover {
  background: rgba(200,150,58,0.2);
  border-color: var(--amber);
}

.tx-btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
}

.tx-btn-lg {
  padding: 1rem 2rem;
  font-size: 0.95rem;
  border-radius: var(--radius);
}

.tx-btn-full {
  width: 100%;
}

.tx-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* ═══════════════════════════════════════════════════════════════
   FORMS + INPUTS
   ═══════════════════════════════════════════════════════════════ */

.tx-input {
  width: 100%;
  background: rgba(232,224,208,0.04);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  color: var(--parchment);
  font-family: var(--font-body);
  font-size: 0.88rem;
  padding: 0.75rem 1rem;
  outline: none;
  transition: border-color 0.15s, background 0.15s;
}

.tx-input:focus {
  border-color: var(--amber-border);
  background: rgba(200,150,58,0.05);
}

.tx-input::placeholder { color: var(--parchment-dim); }

.tx-input-mono {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

.tx-textarea {
  width: 100%;
  background: rgba(232,224,208,0.04);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  color: var(--parchment);
  font-family: var(--font-body);
  font-size: 0.88rem;
  padding: 0.75rem 1rem;
  outline: none;
  resize: vertical;
  line-height: 1.6;
  transition: border-color 0.15s, background 0.15s;
}

.tx-textarea:focus {
  border-color: var(--amber-border);
  background: rgba(200,150,58,0.05);
}

.tx-textarea::placeholder { color: var(--parchment-dim); }

.tx-select {
  background: var(--ink-2);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  color: var(--parchment);
  font-family: var(--font-body);
  font-size: 0.85rem;
  padding: 0.7rem 0.9rem;
  outline: none;
  cursor: pointer;
  transition: border-color 0.15s;
  appearance: none;
}

.tx-select:focus { border-color: var(--amber-border); }
.tx-select option { background: var(--ink-2); }

.tx-label-field {
  display: block;
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--parchment-dim);
  margin-bottom: 0.45rem;
}

/* ═══════════════════════════════════════════════════════════════
   BADGES + PILLS
   ═══════════════════════════════════════════════════════════════ */

.tx-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.85rem;
  border-radius: 100px;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid;
}

.tx-badge-amber {
  background: var(--amber-dim);
  border-color: var(--amber-border);
  color: var(--amber);
}

.tx-badge-sage {
  background: var(--sage-dim);
  border-color: var(--sage-border);
  color: var(--sage-text);
}

.tx-badge-neutral {
  background: rgba(232,224,208,0.05);
  border-color: var(--rule-strong);
  color: var(--parchment-muted);
}

.tx-badge-live {
  background: var(--sage-dim);
  border-color: var(--sage-border);
  color: var(--sage-text);
}

.tx-badge-live .tx-badge-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--sage-text);
  animation: tx-pulse 1.5s ease-in-out infinite;
}

/* Domain color pills */
.tx-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  font-size: 0.63rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  border: 1px solid;
}

.tx-pill-tax       { background: var(--accent-dim); color: var(--accent); border-color: rgba(200,150,58,0.3); }
.tx-pill-finance   { background: rgba(130,168,122,0.12); color: #82A87A; border-color: rgba(130,168,122,0.3); }
.tx-pill-re        { background: rgba(180,120,80,0.12); color: #C8845A; border-color: rgba(180,120,80,0.3); }
.tx-pill-macro     { background: rgba(100,140,190,0.12); color: #7CA0C8; border-color: rgba(100,140,190,0.3); }
.tx-pill-trading   { background: rgba(180,155,120,0.12); color: #C8AB7A; border-color: rgba(180,155,120,0.3); }
.tx-pill-custom    { background: rgba(232,224,208,0.06); color: var(--parchment-muted); border-color: var(--rule-strong); }

/* ═══════════════════════════════════════════════════════════════
   ANDAMENTO TRACE
   ═══════════════════════════════════════════════════════════════ */

.tx-trace {
  background: var(--ink-2);
  border: 1px solid var(--amber-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.tx-trace-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.25rem;
  border-bottom: 1px solid var(--rule);
  background: var(--amber-glow);
}

.tx-trace-title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
}

.tx-trace-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--amber);
  animation: tx-pulse 2s ease-in-out infinite;
}

.tx-trace-body {
  padding: 1rem 1.25rem;
}

.tx-trace-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 0;
  font-size: 0.82rem;
  border-bottom: 1px solid var(--rule);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.tx-trace-row:last-child { border-bottom: none; }
.tx-trace-row.show { opacity: 1; transform: translateX(0); }

.tx-trace-left {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  color: var(--parchment-muted);
}

.tx-trace-val {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--parchment-dim);
  white-space: nowrap;
}

.tx-trace-accent { color: var(--amber); font-weight: 600; }
.tx-trace-positive { color: var(--sage-text); font-weight: 600; }

/* ═══════════════════════════════════════════════════════════════
   PROGRESS / LOADING STATES
   ═══════════════════════════════════════════════════════════════ */

.tx-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(200,150,58,0.2);
  border-top-color: var(--amber);
  border-radius: 50%;
  animation: tx-spin 0.7s linear infinite;
  flex-shrink: 0;
}

@keyframes tx-spin { to { transform: rotate(360deg); } }

.tx-loading-dots {
  display: flex;
  gap: 4px;
  align-items: center;
}

.tx-loading-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--amber);
  animation: tx-blink 1.2s ease-in-out infinite;
}

.tx-loading-dot:nth-child(2) { animation-delay: 0.2s; }
.tx-loading-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes tx-blink {
  0%, 80%, 100% { opacity: 0.15; transform: scale(0.8); }
  40% { opacity: 1; transform: scale(1); }
}

.tx-progress-bar {
  height: 3px;
  background: rgba(232,224,208,0.06);
  border-radius: 100px;
  overflow: hidden;
}

.tx-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--amber), var(--amber-bright));
  border-radius: 100px;
  transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.tx-progress-fill::after {
  content: '';
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: 40px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25));
  animation: tx-shimmer 1.5s ease-in-out infinite;
}

@keyframes tx-shimmer {
  0%, 100% { opacity: 0; }
  50% { opacity: 1; }
}

/* ═══════════════════════════════════════════════════════════════
   STEP PROGRESS (onboarding)
   ═══════════════════════════════════════════════════════════════ */

.tx-steps {
  display: flex;
  align-items: center;
  margin-bottom: 2.5rem;
}

.tx-step-wrap {
  display: flex;
  align-items: center;
  flex: 1;
}

.tx-step-wrap:last-child { flex: 0; }

.tx-step-col {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.tx-step-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--rule-strong);
  background: var(--ink-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--parchment-dim);
  letter-spacing: 0.03em;
  flex-shrink: 0;
  transition: all 0.3s;
  z-index: 1;
}

.tx-step-dot.active {
  border-color: var(--amber);
  background: var(--amber-dim);
  color: var(--amber);
  box-shadow: 0 0 14px rgba(200,150,58,0.2);
}

.tx-step-dot.done {
  border-color: var(--sage);
  background: var(--sage-dim);
  color: var(--sage-text);
}

.tx-step-label {
  font-size: 0.56rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--parchment-dim);
  margin-top: 0.4rem;
  transition: color 0.3s;
  white-space: nowrap;
}

.tx-step-label.active { color: var(--amber); }
.tx-step-label.done { color: var(--parchment-dim); }

.tx-step-line {
  flex: 1;
  height: 1px;
  background: var(--rule-strong);
  margin: 0 4px;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
}

.tx-step-line-fill {
  position: absolute;
  inset: 0;
  background: var(--sage);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s ease;
}

.tx-step-line.done .tx-step-line-fill { transform: scaleX(1); }

/* ═══════════════════════════════════════════════════════════════
   MARKDOWN CONTENT (answer rendering)
   ═══════════════════════════════════════════════════════════════ */

.tx-prose {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--parchment-muted);
}

.tx-prose h1, .tx-prose h2, .tx-prose h3 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--parchment);
  margin: 1.25rem 0 0.5rem;
  letter-spacing: -0.01em;
}

.tx-prose h1 { font-size: 1.4rem; }
.tx-prose h2 {
  font-size: 1.05rem;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.35rem;
}
.tx-prose h3 { font-size: 0.95rem; color: var(--amber); font-family: var(--font-body); font-weight: 600; }

.tx-prose p { margin-bottom: 0.75rem; }
.tx-prose ul, .tx-prose ol { padding-left: 1.4rem; margin-bottom: 0.75rem; }
.tx-prose li { margin-bottom: 0.3rem; }
.tx-prose strong { color: var(--parchment); font-weight: 600; }
.tx-prose em { color: var(--amber); font-style: italic; }

.tx-prose code {
  background: rgba(200,150,58,0.1);
  border: 1px solid var(--amber-border);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  font-family: var(--font-mono);
  font-size: 0.82em;
  color: var(--amber-bright);
}

.tx-prose pre {
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  padding: 1rem;
  overflow-x: auto;
  margin-bottom: 0.75rem;
}

.tx-prose pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--parchment-muted);
}

.tx-prose table { width: 100%; border-collapse: collapse; font-size: 0.82rem; margin-bottom: 0.75rem; }
.tx-prose th {
  background: rgba(232,224,208,0.03);
  color: var(--parchment-dim);
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--rule-strong);
}
.tx-prose td { padding: 0.45rem 0.75rem; border-bottom: 1px solid var(--rule); color: var(--parchment-muted); vertical-align: top; }
.tx-prose tr:last-child td { border-bottom: none; }
.tx-prose blockquote {
  border-left: 2px solid var(--amber);
  padding-left: 1rem;
  margin: 0.75rem 0;
  color: var(--parchment-dim);
  font-style: italic;
}
.tx-prose a { color: var(--amber); text-decoration: none; }
.tx-prose a:hover { text-decoration: underline; }
.tx-prose hr { border: none; border-top: 1px solid var(--rule-strong); margin: 1rem 0; }

/* ═══════════════════════════════════════════════════════════════
   MODAL
   ═══════════════════════════════════════════════════════════════ */

.tx-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(6px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: tx-fade-in 0.2s ease;
}

.tx-modal-overlay.show { display: flex; }

@keyframes tx-fade-in { from { opacity: 0; } to { opacity: 1; } }

.tx-modal {
  background: var(--ink-2);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-xl);
  padding: 2rem;
  width: 100%;
  max-width: 480px;
  position: relative;
  box-shadow: 0 40px 80px rgba(0,0,0,0.7);
  animation: tx-slide-up 0.25s ease;
}

@keyframes tx-slide-up {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.tx-modal-close {
  position: absolute;
  top: 1rem; right: 1rem;
  background: none;
  border: none;
  color: var(--parchment-dim);
  font-size: 1rem;
  cursor: pointer;
  line-height: 1;
  padding: 0.3rem;
  transition: color 0.15s;
}

.tx-modal-close:hover { color: var(--parchment); }

/* ═══════════════════════════════════════════════════════════════
   TOAST
   ═══════════════════════════════════════════════════════════════ */

.tx-toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  padding: 0.75rem 1.25rem;
  background: var(--ink-3);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  font-size: 0.82rem;
  font-family: var(--font-body);
  color: var(--parchment);
  z-index: 9999;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  animation: tx-slide-up 0.25s ease;
  max-width: 320px;
}

.tx-toast.success { border-color: var(--sage-border); color: var(--sage-text); }
.tx-toast.error   { border-color: rgba(139,58,58,0.4); color: var(--signal-red-text); }
.tx-toast.info    { border-color: var(--amber-border); color: var(--amber); }

/* ═══════════════════════════════════════════════════════════════
   STATS STRIP
   ═══════════════════════════════════════════════════════════════ */

.tx-stats-strip {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 1.5rem;
  background: var(--ink-2);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  flex-wrap: wrap;
}

.tx-stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.tx-stat-val {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: -0.02em;
  line-height: 1;
}

.tx-stat-label {
  font-size: 0.67rem;
  color: var(--parchment-dim);
  letter-spacing: 0.04em;
}

/* ═══════════════════════════════════════════════════════════════
   UPLOAD ZONE
   ═══════════════════════════════════════════════════════════════ */

.tx-upload-zone {
  border: 1.5px dashed var(--rule-strong);
  border-radius: var(--radius-lg);
  padding: 2.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: rgba(232,224,208,0.02);
  position: relative;
}

.tx-upload-zone:hover, .tx-upload-zone.dragover {
  border-color: var(--amber-border);
  background: var(--amber-glow);
}

/* ═══════════════════════════════════════════════════════════════
   SKELETON LOADING
   ═══════════════════════════════════════════════════════════════ */

.tx-skeleton {
  background: var(--ink-2);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
}

.tx-skel-line {
  background: rgba(232,224,208,0.06);
  border-radius: 4px;
  animation: tx-skel-shimmer 1.8s ease-in-out infinite;
}

@keyframes tx-skel-shimmer {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.8; }
}

/* ═══════════════════════════════════════════════════════════════
   ANIMATIONS + UTILITIES
   ═══════════════════════════════════════════════════════════════ */

.tx-fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.tx-fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.tx-reveal {
  display: none;
}

.tx-reveal.show {
  display: block;
  animation: tx-slide-up 0.35s ease;
}

/* ═══════════════════════════════════════════════════════════════
   SECTION PATTERNS
   ═══════════════════════════════════════════════════════════════ */

/* Section with left amber border accent */
.tx-section-rule {
  position: relative;
  padding-left: 1.25rem;
}

.tx-section-rule::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--amber), transparent);
  border-radius: 1px;
}

/* Horizontal rule with diamonds */
.tx-rule-decorated {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--parchment-dim);
  font-size: 0.7rem;
}

.tx-rule-decorated::before,
.tx-rule-decorated::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule-strong);
}

/* ═══════════════════════════════════════════════════════════════
   FEEDBACK BAR
   ═══════════════════════════════════════════════════════════════ */

.tx-fb-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--rule);
  background: transparent;
  color: var(--parchment-dim);
  font-size: 0.72rem;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all 0.15s;
}

.tx-fb-btn:hover { border-color: var(--rule-strong); color: var(--parchment-muted); }
.tx-fb-btn.confirm:hover { border-color: var(--sage-border); color: var(--sage-text); background: var(--sage-dim); }
.tx-fb-btn.refute:hover  { border-color: rgba(139,58,58,0.4); color: var(--signal-red-text); background: var(--signal-red-dim); }
.tx-fb-btn.active-confirm { border-color: var(--sage-border); color: var(--sage-text); background: var(--sage-dim); pointer-events: none; }
.tx-fb-btn.active-refute  { border-color: rgba(139,58,58,0.4); color: var(--signal-red-text); background: var(--signal-red-dim); pointer-events: none; }

/* ═══════════════════════════════════════════════════════════════
   DROP ZONE (MODAL UPLOAD)
   ═══════════════════════════════════════════════════════════════ */

.tx-drop-zone {
  border: 1.5px dashed var(--rule-strong);
  border-radius: var(--radius);
  padding: 2rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: rgba(232,224,208,0.02);
}

.tx-drop-zone:hover, .tx-drop-zone.dragover {
  border-color: var(--amber-border);
  background: var(--amber-glow);
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════ */

@media (max-width: 768px) {
  .tx-nav-inner { padding: 0 1rem; }
  .tx-page { padding: 0 1rem; }
  .tx-hide-mobile { display: none !important; }
}

@media (max-width: 640px) {
  .tx-stats-strip { gap: 1rem; }
  .tx-modal { padding: 1.5rem; }
}

/* ═══════════════════════════════════════════════════════════════
   SESSION THREAD (experience.html)
   ═══════════════════════════════════════════════════════════════ */

.tx-session-layout {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  max-width: 960px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.tx-session-sidebar {
  width: 220px;
  flex-shrink: 0;
  position: sticky;
  top: 1.5rem;
  display: flex;
  flex-direction: column;
  background: var(--ink-2);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.tx-session-sidebar-header {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--rule);
}

.tx-session-list {
  flex: 1;
  overflow-y: auto;
  max-height: 55vh;
  padding: 0.35rem 0;
}

.tx-session-item {
  padding: 0.6rem 1rem;
  cursor: pointer;
  transition: background 0.15s;
  border-left: 2px solid transparent;
}

.tx-session-item:hover { background: rgba(232,224,208,0.03); }

.tx-session-item.active {
  background: var(--amber-glow);
  border-left-color: var(--amber);
}

.tx-session-item-name {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--parchment-muted);
  line-height: 1.3;
}

.tx-session-item.active .tx-session-item-name { color: var(--amber); }

.tx-session-item-meta {
  font-size: 0.68rem;
  color: var(--parchment-dim);
  margin-top: 0.15rem;
}

.tx-session-main { flex: 1; min-width: 0; }

.tx-msg-user { display: flex; justify-content: flex-end; margin-bottom: 0.75rem; }
.tx-msg-user-inner {
  max-width: 82%;
  padding: 0.6rem 0.9rem;
  background: rgba(232,224,208,0.05);
  border: 1px solid var(--rule-strong);
  border-radius: 12px 12px 4px 12px;
  font-size: 0.85rem;
  color: var(--parchment-muted);
  line-height: 1.5;
}

.tx-msg-veri { display: flex; justify-content: flex-start; margin-bottom: 0.75rem; }
.tx-msg-veri-inner {
  max-width: 92%;
  padding: 0.8rem 1rem;
  background: var(--amber-glow);
  border: 1px solid var(--amber-border);
  border-radius: 4px 12px 12px 12px;
  font-size: 0.85rem;
  color: var(--parchment);
  line-height: 1.65;
}

@media (max-width: 768px) {
  .tx-session-layout { flex-direction: column; }
  .tx-session-sidebar { display: none; width: 100%; position: static; }
}

/* ═══════════════════════════════════════════════════════════════
   CHALLENGE / VERIFICATION BADGES
   ═══════════════════════════════════════════════════════════════ */

.tx-challenge-badge {
  font-size: 0.67rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 100px;
  letter-spacing: 0.05em;
  border: 1px solid;
}

.tx-challenge-none, .tx-challenge-low {
  background: var(--sage-dim);
  color: var(--sage-text);
  border-color: var(--sage-border);
}

.tx-challenge-medium {
  background: var(--accent-dim);
  color: var(--amber);
  border-color: var(--amber-border);
}

.tx-challenge-high {
  background: var(--signal-red-dim);
  color: var(--signal-red-text);
  border-color: rgba(139,58,58,0.4);
}

/* ═══════════════════════════════════════════════════════════════
   ANDAMENTO PIPELINE GLYPH (decorative)
   An abstract symbol representing the 4-8 parallel agents
   ═══════════════════════════════════════════════════════════════ */

.tx-andamento-glyph {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
}

.tx-andamento-glyph span {
  display: block;
  height: 2px;
  background: var(--amber);
  border-radius: 1px;
  opacity: 0.6;
  transition: width 0.5s ease;
}