/* ═══════════════════════════════════════════════════════════════
   THE MARKET ALMANAC — Design System
   Dark Trading Terminal × Fine Book Typography
   ═══════════════════════════════════════════════════════════════ */

:root {
  /* Colors */
  --bg:           #0c0c0c;
  --bg-2:         #141414;
  --bg-3:         #1c1c1c;
  --bg-4:         #242424;
  --border:       #2a2a2a;
  --border-2:     #383838;

  --text:         #e4ddd0;
  --text-2:       #a89f92;
  --text-3:       #6e6660;
  --text-4:       #4a4440;

  --gold:         #c8a84b;
  --gold-2:       #e8c870;
  --gold-dim:     #6e5a26;
  --gold-bg:      rgba(200, 168, 75, 0.06);

  --green:        #4a9e70;
  --green-dim:    rgba(74, 158, 112, 0.12);
  --red:          #c05050;
  --red-dim:      rgba(192, 80, 80, 0.12);
  --amber:        #c07820;
  --amber-dim:    rgba(192, 120, 32, 0.12);
  --blue:         #5888b8;
  --blue-dim:     rgba(88, 136, 184, 0.12);

  /* Layout */
  --sidebar-w:    268px;
  --chat-w:       400px;
  --content-max:  760px;
  --topbar-h:     52px;

  /* Typography */
  --serif:        'Playfair Display', Georgia, 'Times New Roman', serif;
  --sans:         'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono:         'JetBrains Mono', 'Courier New', monospace;

  /* Transitions */
  --t-fast:       0.15s ease;
  --t-med:        0.25s ease;
  --t-slow:       0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 0.9375rem;
  line-height: 1.6;
  overflow: hidden;
  height: 100dvh;
}
a { color: var(--gold); text-decoration: none; }
a:hover { color: var(--gold-2); }
button { cursor: pointer; border: none; background: none; font-family: inherit; color: inherit; }
textarea, input { font-family: inherit; }

/* ─── App Shell ─────────────────────────────────────────────── */
#app {
  display: flex;
  height: 100dvh;
  overflow: hidden;
  position: relative;
}

/* ─── Mobile Topbar ─────────────────────────────────────────── */
.topbar {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  z-index: 200;
}
.topbar-logo {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  color: var(--gold);
}
.menu-btn {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-2);
  border-radius: 2px;
  transition: var(--t-fast);
}
.kael-mobile-btn {
  font-size: 1.4rem;
  color: var(--gold);
  padding: 8px;
  opacity: 0.9;
}

/* ─── Sidebar ───────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  height: 100dvh;
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform var(--t-slow);
  z-index: 100;
}
.sidebar-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}
.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 1.5rem 1.25rem 1.25rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.logo-mark {
  font-size: 1.6rem;
  color: var(--gold);
  line-height: 1;
  flex-shrink: 0;
}
.logo-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.18em;
  color: var(--text);
}
.logo-sub {
  font-size: 0.7rem;
  color: var(--text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 2px;
}

/* Chapter Navigation */
.chapter-nav {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border-2) transparent;
}
.chapter-nav::-webkit-scrollbar { width: 4px; }
.chapter-nav::-webkit-scrollbar-track { background: transparent; }
.chapter-nav::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 4px; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0.6rem 1.25rem;
  cursor: pointer;
  transition: background var(--t-fast);
  border-left: 3px solid transparent;
  position: relative;
}
.nav-item:hover {
  background: var(--bg-3);
}
.nav-item.active {
  background: var(--gold-bg);
  border-left-color: var(--gold);
}
.nav-item.active .nav-num { color: var(--gold-2); }
.nav-item.active .nav-title { color: var(--text); }

.nav-num {
  font-family: var(--serif);
  font-size: 0.8rem;
  color: var(--text-3);
  min-width: 24px;
  text-align: center;
  font-weight: 600;
  flex-shrink: 0;
  transition: color var(--t-fast);
}
.nav-title {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.3;
  transition: color var(--t-fast);
}

/* Sidebar Footer */
.sidebar-footer {
  border-top: 1px solid var(--border);
  padding: 1rem 1rem;
  flex-shrink: 0;
}
.kael-trigger-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0.75rem 1rem;
  background: var(--gold-bg);
  border: 1px solid var(--gold-dim);
  border-radius: 8px;
  transition: all var(--t-fast);
}
.kael-trigger-btn:hover {
  background: rgba(200, 168, 75, 0.12);
  border-color: var(--gold);
}
.kael-trigger-icon { font-size: 1.3rem; color: var(--gold); }
.kael-trigger-text { flex: 1; text-align: left; }
.kael-name { display: block; font-size: 0.82rem; font-weight: 600; color: var(--gold); letter-spacing: 0.05em; }
.kael-sub { display: block; font-size: 0.7rem; color: var(--text-3); margin-top: 1px; }
.kael-arrow { color: var(--gold-dim); font-size: 0.9rem; }

/* Sidebar overlay (mobile) */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 90;
  backdrop-filter: blur(2px);
}
.sidebar-overlay.active { display: block; }

/* ─── Main Content ──────────────────────────────────────────── */
.main {
  flex: 1;
  height: 100dvh;
  overflow-y: auto;
  overflow-x: hidden;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--border-2) transparent;
  transition: margin-right var(--t-slow);
}
.main::-webkit-scrollbar { width: 6px; }
.main::-webkit-scrollbar-track { background: transparent; }
.main::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 4px; }

.content-wrapper {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 3rem 2.5rem 5rem;
}

/* Chapter footer navigation */
.chapter-nav-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.nav-btn {
  font-size: 0.82rem;
  color: var(--text-2);
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all var(--t-fast);
}
.nav-btn:hover { color: var(--gold); border-color: var(--gold-dim); background: var(--gold-bg); }
.nav-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.chapter-progress {
  font-size: 0.75rem;
  color: var(--text-3);
  font-family: var(--mono);
}

/* ─── Article Typography ────────────────────────────────────── */
.content-article {
  animation: fadeIn 0.3s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Chapter header */
.chapter-header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}
.chapter-eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.chapter-title {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.15;
  margin-bottom: 0.5rem;
}
.chapter-subtitle {
  font-size: 0.95rem;
  color: var(--text-2);
  font-style: italic;
}

/* Body content styles */
.content-article h3 {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text);
  margin: 2.5rem 0 1rem;
  line-height: 1.3;
}
.content-article h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 1.75rem 0 0.75rem;
}
.content-article p {
  color: var(--text-2);
  line-height: 1.8;
  margin-bottom: 1.1rem;
}
.content-article p.lead {
  font-size: 1.05rem;
  color: var(--text);
  line-height: 1.75;
  font-family: var(--serif);
  font-style: italic;
}
.content-article ul, .content-article ol {
  color: var(--text-2);
  padding-left: 1.5rem;
  margin-bottom: 1.1rem;
  line-height: 1.8;
}
.content-article li { margin-bottom: 0.4rem; }
.content-article strong { color: var(--text); font-weight: 600; }
.content-article em { color: var(--text); font-style: italic; }

/* Source tag */
.source-tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem !important;
}

/* Chapter intro */
.chapter-intro {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

/* Blockquote */
blockquote {
  border-left: 3px solid var(--gold);
  padding: 0.75rem 0 0.75rem 1.5rem;
  margin: 2rem 0;
  background: var(--gold-bg);
  border-radius: 0 6px 6px 0;
}
blockquote p, blockquote {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--text);
  line-height: 1.7;
  margin: 0;
}

/* Callout box */
.callout {
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-left: 3px solid var(--gold);
  border-radius: 0 8px 8px 0;
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
}
.callout-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--gold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.callout p { margin-bottom: 0.5rem; }
.callout p:last-child { margin-bottom: 0; }

/* ─── Process Flow ──────────────────────────────────────────── */
.process-flow {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin: 1.5rem 0 2rem;
  flex-wrap: wrap;
}
.stage {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  padding: 1rem;
  flex: 1;
  min-width: 160px;
}
.stage-num {
  width: 28px;
  height: 28px;
  background: var(--gold-dim);
  color: var(--gold-2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}
.stage strong { display: block; font-size: 0.82rem; color: var(--text); margin-bottom: 0.3rem; }
.stage p { font-size: 0.78rem; color: var(--text-3); line-height: 1.5; margin: 0; }
.stage-arrow {
  color: var(--gold-dim);
  font-size: 1.2rem;
  padding-top: 1rem;
  flex-shrink: 0;
  align-self: center;
}

/* ─── Two Column ────────────────────────────────────────────── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}
.col-card {
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  padding: 1.25rem;
}
.col-card.positive { border-top: 2px solid var(--green); }
.col-card.negative { border-top: 2px solid var(--red); }
.col-card.warning  { border-top: 2px solid var(--amber); }
.col-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-3);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.col-card.positive .col-label { color: var(--green); }
.col-card.negative .col-label { color: var(--red); }
.col-card.warning  .col-label { color: var(--amber); }
.col-card p { font-size: 0.85rem; color: var(--text-2); line-height: 1.6; margin-bottom: 0.5rem; }
.col-card ul { font-size: 0.85rem; color: var(--text-2); padding-left: 1.25rem; }
.col-card li { margin-bottom: 0.3rem; }

/* ─── Tables ────────────────────────────────────────────────── */
.table-wrapper {
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}
.data-table th {
  background: var(--bg-3);
  color: var(--text-3);
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.75rem 1rem;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid var(--border-2);
}
.data-table td {
  padding: 0.75rem 1rem;
  color: var(--text-2);
  border-bottom: 1px solid var(--border);
  line-height: 1.5;
  vertical-align: top;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg-3); }
.data-table .row-positive td { background: var(--green-dim); }
.data-table .row-negative td { background: var(--red-dim); }
.data-table .row-warning  td { background: var(--amber-dim); }
.data-table .row-neutral  td { background: var(--bg-3); }

/* ─── Crisis Stages ─────────────────────────────────────────── */
.crisis-stages { display: flex; flex-direction: column; gap: 0.75rem; margin: 1.5rem 0; }
.crisis-stage {
  display: flex;
  gap: 1rem;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  padding: 1.25rem;
}
.crisis-num {
  width: 36px;
  height: 36px;
  background: var(--bg-4);
  border: 1px solid var(--border-2);
  color: var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}
.crisis-name {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--gold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.crisis-content p { font-size: 0.85rem; color: var(--text-2); line-height: 1.6; margin-bottom: 0.5rem; }
.crisis-examples, .crisis-watch {
  font-size: 0.78rem;
  color: var(--text-3);
  font-style: italic;
  border-top: 1px solid var(--border);
  padding-top: 0.5rem;
  margin-top: 0.5rem;
}

/* ─── Playbooks ─────────────────────────────────────────────── */
.playbook {
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 10px;
  padding: 1.5rem;
  margin: 2rem 0;
}
.playbook-header {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-2);
}
.playbook-desc { font-size: 0.85rem; color: var(--text-2); margin-bottom: 1rem; line-height: 1.6; }

/* ─── Practitioner Sections ─────────────────────────────────── */
.practitioner-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-3);
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem !important;
}
.principle-block {
  background: var(--bg-3);
  border-left: 3px solid var(--border-2);
  padding: 1.25rem 1.5rem;
  margin: 1rem 0;
  border-radius: 0 8px 8px 0;
  transition: border-color var(--t-fast);
}
.principle-block:hover { border-left-color: var(--gold-dim); }
.principle-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 0.75rem;
}
.principle-block p { font-size: 0.85rem; color: var(--text-2); line-height: 1.7; margin-bottom: 0.5rem; }
.principle-block ul { font-size: 0.85rem; color: var(--text-2); padding-left: 1.25rem; }
.principle-block li { margin-bottom: 0.3rem; }

/* ─── Concept Blocks ────────────────────────────────────────── */
.concept-block {
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin: 1.25rem 0;
}
.concept-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 0.75rem;
}
.concept-block p, .concept-block ol, .concept-block ul {
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 0.5rem;
}
.concept-block ol, .concept-block ul { padding-left: 1.25rem; }
.concept-block li { margin-bottom: 0.4rem; }

/* Market application callout inside concept block */
.market-application {
  background: var(--gold-bg);
  border: 1px solid var(--gold-dim);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin-top: 1rem;
}
.market-app-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--gold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.market-application p {
  font-size: 0.83rem;
  color: var(--text);
  line-height: 1.65;
  margin: 0;
}

/* ─── Contradiction Grid ────────────────────────────────────── */
.contradiction-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}
.contradiction-card {
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  padding: 1.25rem;
}
.contradiction-card.danger { border-top: 2px solid var(--red); }
.contradiction-card.warning { border-top: 2px solid var(--amber); }
.contradiction-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}
.contradiction-card p { font-size: 0.8rem; color: var(--text-2); line-height: 1.6; margin-bottom: 0.5rem; }

/* ─── Layer Grid (Welcome) ──────────────────────────────────── */
.layer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}
.layer-card {
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  padding: 1.25rem;
}
.layer-num {
  font-family: var(--serif);
  font-size: 1.4rem;
  color: var(--gold);
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.layer-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.4rem;
}
.layer-desc { font-size: 0.78rem; color: var(--text-3); line-height: 1.5; }

/* ─── Filter Steps ──────────────────────────────────────────── */
.filter-steps { display: flex; flex-direction: column; gap: 0.5rem; margin: 1.25rem 0; }
.filter-step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem 1.25rem;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 8px;
}
.filter-num {
  width: 28px;
  height: 28px;
  background: var(--gold-dim);
  color: var(--gold-2);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}
.filter-step strong { display: block; font-size: 0.85rem; color: var(--text); margin-bottom: 0.3rem; }
.filter-step p { font-size: 0.8rem; color: var(--text-2); line-height: 1.55; margin: 0; }

/* ─── Pattern Grid ──────────────────────────────────────────── */
.pattern-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.25rem 0;
}
.pattern-card {
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  padding: 1.25rem;
}
.pattern-name {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--gold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-2);
}
.pattern-detail p { font-size: 0.8rem; color: var(--text-2); line-height: 1.6; margin-bottom: 0.4rem; }

/* ─── VCP Visual ────────────────────────────────────────────── */
.vcp-visual {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  padding: 1rem 0 0.75rem;
  margin: 0.75rem 0;
}
.vcp-bar {
  background: linear-gradient(to top, var(--gold-dim), transparent);
  border: 1px solid var(--gold-dim);
  border-radius: 3px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 4px 0;
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--gold);
  text-align: center;
}
.vcp-arrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--gold-2);
  align-self: center;
  padding-left: 4px;
}

/* ─── Reading Architecture ──────────────────────────────────── */
.reading-layer { margin: 2rem 0; }
.layer-title {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-2);
  margin-bottom: 1rem;
}
.book-list { display: flex; flex-direction: column; gap: 0.5rem; }
.book-card {
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  border-left: 3px solid var(--border-2);
}
.book-card.priority-1 { border-left-color: var(--gold); }
.book-card.priority-2 { border-left-color: var(--border-2); }
.book-title { font-weight: 600; font-size: 0.9rem; color: var(--text); margin-bottom: 0.15rem; }
.book-author { font-size: 0.75rem; color: var(--text-3); font-style: italic; margin-bottom: 0.5rem; }
.book-note { font-size: 0.8rem; color: var(--text-2); line-height: 1.55; }

.source-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}
.source-card {
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  padding: 1.1rem;
}
.source-name { font-weight: 600; font-size: 0.85rem; color: var(--gold); margin-bottom: 0.4rem; }
.source-desc { font-size: 0.78rem; color: var(--text-2); line-height: 1.55; }

/* ─── Chat Panel ────────────────────────────────────────────── */
.chat-panel {
  width: var(--chat-w);
  flex-shrink: 0;
  height: 100dvh;
  background: var(--bg-2);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  position: fixed;
  right: 0;
  top: 0;
  z-index: 150;
  transition: transform var(--t-slow);
}
.chat-panel.open {
  transform: translateX(0);
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  background: var(--bg-2);
}
.chat-identity { display: flex; align-items: center; gap: 10px; }
.chat-avatar {
  width: 36px;
  height: 36px;
  background: var(--gold-dim);
  color: var(--gold-2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1rem;
  border: 1px solid var(--gold-dim);
}
.chat-name {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--gold);
  letter-spacing: 0.15em;
}
.chat-status {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.7rem;
  color: var(--text-3);
  margin-top: 2px;
}
.status-dot {
  width: 6px; height: 6px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.chat-header-actions { display: flex; gap: 4px; }
.chat-clear-btn, .chat-close-btn {
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--text-3);
  transition: all var(--t-fast);
}
.chat-clear-btn:hover, .chat-close-btn:hover {
  background: var(--bg-3);
  color: var(--text-2);
}

/* Messages */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  scrollbar-width: thin;
  scrollbar-color: var(--border-2) transparent;
}
.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 4px; }

.chat-msg {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 90%;
  animation: msgIn 0.2s ease;
}
@keyframes msgIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.kael-msg { align-self: flex-start; }
.user-msg { align-self: flex-end; }

.msg-content {
  padding: 0.9rem 1.1rem;
  border-radius: 12px;
  line-height: 1.65;
  font-size: 0.875rem;
}
.kael-msg .msg-content {
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-top-left-radius: 4px;
  color: var(--text-2);
}
.kael-msg .msg-content p { margin-bottom: 0.6rem; color: var(--text-2); }
.kael-msg .msg-content p:last-child { margin-bottom: 0; }
.kael-msg .msg-content strong { color: var(--text); }
.user-msg .msg-content {
  background: var(--gold-bg);
  border: 1px solid var(--gold-dim);
  border-top-right-radius: 4px;
  color: var(--text);
}
.msg-time {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-4);
  padding: 0 4px;
}
.kael-msg .msg-time { color: var(--gold-dim); }

/* Thinking indicator */
.thinking-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0.75rem 1rem;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 12px;
  border-top-left-radius: 4px;
  width: fit-content;
}
.thinking-dot {
  width: 6px; height: 6px;
  background: var(--gold);
  border-radius: 50%;
  animation: thinkBounce 1.2s ease infinite;
}
.thinking-dot:nth-child(2) { animation-delay: 0.2s; }
.thinking-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes thinkBounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.4; }
  40% { transform: translateY(-4px); opacity: 1; }
}
.thinking-text { font-size: 0.75rem; color: var(--text-3); font-style: italic; }

/* Chat Input */
.chat-input-area {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  background: var(--bg-2);
}
.chat-input-wrapper {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 10px;
  padding: 0.6rem 0.6rem 0.6rem 1rem;
  transition: border-color var(--t-fast);
}
.chat-input-wrapper:focus-within { border-color: var(--gold-dim); }
.chat-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 0.875rem;
  line-height: 1.5;
  resize: none;
  max-height: 120px;
  scrollbar-width: thin;
}
.chat-input::placeholder { color: var(--text-4); }
.chat-send-btn {
  width: 34px; height: 34px;
  background: var(--gold-dim);
  color: var(--gold-2);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--t-fast);
}
.chat-send-btn:hover { background: var(--gold); color: var(--bg); }
.chat-send-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.chat-disclaimer {
  font-size: 0.65rem;
  color: var(--text-4);
  text-align: center;
  margin-top: 0.5rem;
}

/* ─── Floating Kael Button ──────────────────────────────────── */
.kael-float-btn {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-3);
  border: 1px solid var(--gold-dim);
  color: var(--gold);
  padding: 0.7rem 1.2rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  z-index: 120;
  transition: all var(--t-fast);
}
.kael-float-btn:hover {
  background: var(--gold-bg);
  border-color: var(--gold);
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.5);
}
.kael-float-btn.hidden { opacity: 0; pointer-events: none; transform: translateY(4px); }
.kael-float-icon { font-size: 1.1rem; }
.kael-float-label { font-family: var(--sans); }

/* ─── Responsive ────────────────────────────────────────────── */
@media (max-width: 900px) {
  .sidebar {
    position: fixed;
    left: 0; top: 0;
    height: 100dvh;
    transform: translateX(-100%);
    z-index: 150;
  }
  .sidebar.open { transform: translateX(0); }
  .topbar { display: flex; }
  .main { padding-top: var(--topbar-h); }
  .content-wrapper { padding: 2rem 1.25rem 4rem; }
  .two-col { grid-template-columns: 1fr; }
  .contradiction-grid { grid-template-columns: 1fr; }
  .pattern-grid { grid-template-columns: 1fr; }
  .layer-grid { grid-template-columns: 1fr; }
  .source-grid { grid-template-columns: 1fr; }
  .process-flow { flex-direction: column; }
  .stage-arrow { transform: rotate(90deg); align-self: center; }
  .chat-panel {
    width: 100%;
    border-left: none;
  }
  .kael-float-btn { bottom: 1rem; right: 1rem; }
}

@media (max-width: 480px) {
  .content-wrapper { padding: 1.5rem 1rem 3rem; }
  .chapter-title { font-size: 1.6rem; }
}

/* ─── Utilities ─────────────────────────────────────────────── */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }