/* Default theme = Twilight (dark, original) */
:root,
[data-theme="twilight"] {
  --bg: #0a0a10;
  --bg-deep: #050508;
  --surface: #14141d;
  --surface-2: #1c1c28;
  --surface-3: #232333;
  --border: #2a2a3a;
  --border-soft: #1f1f2c;
  --text: #e8e8d8;
  --text-dim: #8a8a9a;
  --text-faint: #555568;
  --gold: #d4a843;
  --gold-soft: #b88f2e;
  --gold-deep: #8a6920;
  --rose: #c4495e;
  --jade: #4a8a6a;
  --indigo: #5a5a8a;
  --bg-glow-1: rgba(90, 90, 138, 0.06);
  --bg-glow-2: rgba(212, 168, 67, 0.03);
  --bg-translucent: rgba(10, 10, 16, 0.85);
  --bg-translucent-strong: rgba(10, 10, 16, 0.92);
  --surface-translucent: rgba(20, 20, 29, 0.95);
  --surface-translucent-soft: rgba(14, 14, 22, 0.85);
  --panel-header-bg-1: rgba(28, 28, 40, 0.9);
  --panel-header-bg-2: rgba(20, 20, 29, 0.9);
  color-scheme: dark;
}

/* Parchment — warm light, paper-feel */
[data-theme="parchment"] {
  --bg: #f5efe2;
  --bg-deep: #ebe3d1;
  --surface: #fbf6e8;
  --surface-2: #f0e9d6;
  --surface-3: #e6dec9;
  --border: #d8cdb0;
  --border-soft: #e3d9c0;
  --text: #2a2419;
  --text-dim: #5a4f3a;
  --text-faint: #8a7e60;
  --gold: #8a6920;
  --gold-soft: #a07c2c;
  --gold-deep: #6a5318;
  --rose: #a23d4a;
  --jade: #3d6e54;
  --indigo: #4d5278;
  --bg-glow-1: rgba(138, 105, 32, 0.04);
  --bg-glow-2: rgba(162, 61, 74, 0.02);
  --bg-translucent: rgba(245, 239, 226, 0.88);
  --bg-translucent-strong: rgba(245, 239, 226, 0.94);
  --surface-translucent: rgba(251, 246, 232, 0.96);
  --surface-translucent-soft: rgba(245, 239, 226, 0.88);
  --panel-header-bg-1: rgba(240, 233, 214, 0.92);
  --panel-header-bg-2: rgba(251, 246, 232, 0.92);
  color-scheme: light;
}

/* Mineral — cool dark, blue-tinted */
[data-theme="mineral"] {
  --bg: #0d121a;
  --bg-deep: #060a12;
  --surface: #161e2a;
  --surface-2: #1f2935;
  --surface-3: #283545;
  --border: #2c3b4d;
  --border-soft: #1f2a36;
  --text: #d8e0e8;
  --text-dim: #8595a8;
  --text-faint: #556270;
  --gold: #c4a248;
  --gold-soft: #a4862e;
  --gold-deep: #786020;
  --rose: #b8556a;
  --jade: #4f9082;
  --indigo: #6877a8;
  --bg-glow-1: rgba(80, 120, 168, 0.08);
  --bg-glow-2: rgba(196, 162, 72, 0.03);
  --bg-translucent: rgba(13, 18, 26, 0.85);
  --bg-translucent-strong: rgba(13, 18, 26, 0.92);
  --surface-translucent: rgba(22, 30, 42, 0.95);
  --surface-translucent-soft: rgba(13, 18, 26, 0.85);
  --panel-header-bg-1: rgba(40, 53, 69, 0.92);
  --panel-header-bg-2: rgba(22, 30, 42, 0.92);
  color-scheme: dark;
}

:root {
  --serif: 'Cormorant Garamond', 'EB Garamond', Georgia, serif;
  --mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
  --sidebar-w: 280px;
  --composer-h: auto;
  --content-max: 760px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
body {
  background-image:
    radial-gradient(ellipse at top, var(--bg-glow-1) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 90%, var(--bg-glow-2) 0%, transparent 50%);
  background-attachment: fixed;
}

button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }
textarea { font: inherit; color: inherit; }

/* ─── App layout ───────────────────────────────────────────── */
.app {
  display: flex;
  flex-direction: row;
  height: 100vh;
  height: 100dvh;
  position: relative;
  transition: padding-left 0.3s ease;
}
.main-shell {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
@media (min-width: 900px) {
  body.sidebar-open .app { padding-left: var(--sidebar-w); }
}

/* ─── App bar ──────────────────────────────────────────────── */
.app-bar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--border-soft);
  background: var(--bg-translucent);
  backdrop-filter: blur(8px);
  z-index: 10;
}
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 32px;
  height: 32px;
  padding: 6px 6px;
  border-radius: 4px;
  transition: background 0.2s;
}
.hamburger:hover { background: var(--surface-2); }
.hamburger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text-dim);
  transition: all 0.2s;
}
.app-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
  margin-right: auto;
}
.title-mark { color: var(--gold); font-size: 1.2rem; }
.title-text {
  font-family: var(--serif);
  font-size: 1.1rem;
  letter-spacing: 0.4em;
  color: var(--text);
  font-weight: 500;
}
.reset-btn {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  color: var(--text-dim);
  font-size: 1.1rem;
  transition: all 0.2s;
}
.reset-btn:hover { background: var(--surface-2); color: var(--gold); }

/* ─── Sidebar ──────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--bg-deep);
  border-right: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  z-index: 100;
}
body.sidebar-open .sidebar { transform: translateX(0); }
.sidebar-header {
  display: flex;
  align-items: center;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--border-soft);
}
.sidebar-title {
  font-family: var(--serif);
  font-size: 1rem;
  letter-spacing: 0.4em;
  color: var(--gold);
  font-weight: 500;
}
.sidebar-close {
  margin-left: auto;
  width: 28px;
  height: 28px;
  border-radius: 4px;
  color: var(--text-dim);
  font-size: 1.4rem;
  line-height: 1;
  transition: background 0.2s;
}
.sidebar-close:hover { background: var(--surface); }

.sidebar-action {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0.85rem 1.1rem;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-family: var(--serif);
  font-size: 0.95rem;
  text-align: left;
  transition: all 0.2s;
}
.sidebar-action:hover {
  border-color: var(--gold-soft);
  color: var(--gold);
}
.action-icon {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  color: var(--gold);
}

.sidebar-section {
  padding: 0.5rem 1.1rem 1rem;
}
.section-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-faint);
  letter-spacing: 0.2em;
  margin-bottom: 0.6rem;
  text-transform: uppercase;
}
.history-section {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}
.current-summary { font-size: 0.88rem; }
.current-summary .empty { color: var(--text-faint); font-style: italic; }
.current-summary .summary-input {
  font-style: italic;
  color: var(--text);
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  line-height: 1.4;
}
.current-summary .summary-line {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
  padding: 0.18rem 0;
  border-bottom: 1px solid var(--border-soft);
}
.current-summary .summary-line:last-child { border-bottom: none; }
.current-summary .summary-line .lbl { color: var(--text-faint); }
.current-summary .summary-line .val { color: var(--gold); }

.history-list { list-style: none; }
.history-list .empty {
  color: var(--text-faint);
  font-style: italic;
  font-size: 0.85rem;
}
.history-list li {
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--border-soft);
  cursor: pointer;
  transition: opacity 0.2s;
}
.history-list li:not(.empty):hover { opacity: 0.75; }
.history-item-input {
  font-style: italic;
  color: var(--text);
  font-size: 0.88rem;
  line-height: 1.35;
  margin-bottom: 0.2rem;
}
.history-item-meta {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-faint);
  letter-spacing: 0.05em;
}

/* Theme switcher (sidebar) */
.theme-section {
  border-top: 1px solid var(--border-soft);
}
.theme-options {
  display: flex;
  gap: 0.4rem;
}
.theme-option {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.3rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: all 0.2s;
}
.theme-option:hover { border-color: var(--gold-soft); color: var(--text); }
.theme-option.active { border-color: var(--gold); color: var(--gold); background: rgba(212, 168, 67, 0.06); }
.theme-swatch {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: block;
  border: 1px solid rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
}
.theme-swatch-twilight {
  background: linear-gradient(135deg, #14141d 0%, #14141d 50%, #d4a843 50%, #d4a843 100%);
}
.theme-swatch-parchment {
  background: linear-gradient(135deg, #fbf6e8 0%, #fbf6e8 50%, #8a6920 50%, #8a6920 100%);
}
.theme-swatch-mineral {
  background: linear-gradient(135deg, #161e2a 0%, #161e2a 50%, #c4a248 50%, #c4a248 100%);
}

/* Customize toggle + color pickers */
.theme-customize-toggle {
  margin-top: 0.6rem;
  width: 100%;
  text-align: left;
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: none;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.theme-customize-toggle:hover { border-color: var(--gold-soft); color: var(--text); }
.theme-customize-toggle[aria-expanded="true"] { color: var(--gold); border-color: var(--gold-soft); }
.theme-customize-toggle[aria-expanded="true"] .customize-caret { transform: rotate(180deg); }
.customize-caret { transition: transform 0.2s; font-size: 0.7rem; }

.theme-customizer {
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 4px;
}
.color-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  cursor: pointer;
}
.color-row span { flex: 1; }
.color-row input[type="color"] {
  width: 30px;
  height: 24px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: transparent;
  cursor: pointer;
  padding: 0;
}
.color-row input[type="color"]::-webkit-color-swatch-wrapper { padding: 2px; }
.color-row input[type="color"]::-webkit-color-swatch {
  border: none;
  border-radius: 2px;
}
.theme-reset {
  margin-top: 0.4rem;
  padding: 0.3rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--text-faint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: none;
  cursor: pointer;
  transition: all 0.2s;
}
.theme-reset:hover { color: var(--rose); border-color: var(--rose); }

.sidebar-footer {
  padding: 0.85rem 1.1rem;
  border-top: 1px solid var(--border-soft);
  display: flex;
  gap: 1rem;
}
.sidebar-link {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
  background: none;
  border: none;
  padding: 0;
  transition: color 0.2s;
}
.sidebar-link:hover { color: var(--gold); }

/* ─── Overlay (mobile sidebar) ─────────────────────────────── */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  z-index: 50;
}
body.sidebar-open .overlay { opacity: 1; pointer-events: auto; }
@media (min-width: 900px) {
  body.sidebar-open .overlay { opacity: 0; pointer-events: none; }
}

/* ─── Chat region ──────────────────────────────────────────── */
.chat {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 1.5rem 1.1rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  scroll-behavior: smooth;
}

/* ─── Welcome (idle state) ─────────────────────────────────── */
.welcome {
  max-width: var(--content-max);
  width: 100%;
  text-align: center;
  padding: 4rem 1rem 2rem;
  margin: auto;
}
.welcome-mark {
  font-size: 3rem;
  color: var(--gold);
  text-shadow: 0 0 30px rgba(212, 168, 67, 0.3);
  margin-bottom: 1rem;
}
.welcome-title {
  font-family: var(--serif);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 500;
  letter-spacing: 0.35em;
  color: var(--gold);
  margin-bottom: 0.5rem;
}
.welcome-subtitle {
  font-style: italic;
  color: var(--text);
  font-size: 1.15rem;
  margin-bottom: 2rem;
}
.welcome-body {
  font-size: 1.05rem;
  color: var(--text-dim);
  line-height: 1.65;
  max-width: 540px;
  margin: 0 auto 1rem;
}
.welcome-body-quiet { color: var(--text-faint); font-size: 0.95rem; }
.inline-link {
  color: var(--gold);
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  cursor: pointer;
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 3px;
}
.inline-link:hover { color: var(--gold-soft); }
body.has-messages .welcome { display: none; }

/* ─── Boot status ──────────────────────────────────────────── */
.boot-status {
  max-width: 480px;
  width: 100%;
  margin: 1.5rem auto;
  padding: 1.2rem 1.4rem;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  transition: opacity 0.5s;
}
.boot-status.fade-out { opacity: 0; pointer-events: none; }
.boot-status.hidden { display: none; }
.boot-line {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--gold);
  margin-bottom: 0.65rem;
  letter-spacing: 0.05em;
}
.boot-progress {
  height: 2px;
  background: var(--border);
  border-radius: 1px;
  overflow: hidden;
  margin-bottom: 0.85rem;
}
.boot-bar {
  height: 100%;
  width: 0;
  background: linear-gradient(to right, var(--gold-soft), var(--gold));
  transition: width 0.4s;
}
.boot-steps {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--text-faint);
}
.boot-steps li::before { content: '○ '; }
.boot-steps li[data-state="active"] { color: var(--gold); }
.boot-steps li[data-state="active"]::before { content: '◐ '; }
.boot-steps li[data-state="done"] { color: var(--jade); }
.boot-steps li[data-state="done"]::before { content: '● '; }

/* ─── Messages ─────────────────────────────────────────────── */
.messages {
  max-width: var(--content-max);
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding-bottom: 2rem;
}
.msg { animation: msgIn 0.4s ease-out; }
@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* User message */
.msg-user {
  align-self: flex-end;
  max-width: 85%;
  background: var(--surface-2);
  padding: 0.75rem 1rem;
  border-radius: 16px 16px 4px 16px;
  font-style: italic;
  color: var(--text);
  font-size: 1.02rem;
  line-height: 1.5;
}

/* LLM (mirror) message */
.msg-mirror {
  align-self: flex-start;
  max-width: 100%;
  width: 100%;
  position: relative;
  padding-left: 2.5rem;
}
.msg-mirror::before {
  content: '◐';
  position: absolute;
  left: 0;
  top: 0.1rem;
  color: var(--gold);
  font-size: 1.3rem;
  line-height: 1;
}
.msg-mirror-text {
  color: var(--text);
  font-size: 1.05rem;
  line-height: 1.7;
  white-space: pre-wrap;
}
.msg-mirror-text p { margin-bottom: 0.85rem; }
.msg-mirror-text p:last-child { margin-bottom: 0; }
.msg-mirror.thinking::after {
  content: '';
  display: inline-block;
  width: 6px;
  height: 18px;
  background: var(--gold);
  margin-left: 4px;
  animation: blink 1s infinite;
  vertical-align: text-bottom;
}
@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* Diagnosis card — the geometric register */
.msg-diag {
  align-self: stretch;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-left: 3px solid var(--gold);
  border-radius: 4px;
  padding: 1.1rem 1.25rem;
  font-size: 0.95rem;
}
.diag-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--text-faint);
  margin-bottom: 0.85rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--border-soft);
  text-transform: uppercase;
}
.diag-tokens { display: flex; flex-wrap: wrap; gap: 0.3rem; }
.diag-token {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--gold);
  padding: 0.1rem 0.45rem;
  background: var(--surface-2);
  border-radius: 2px;
  letter-spacing: 0.05em;
}
.diag-token.missed { color: var(--text-faint); text-decoration: line-through; opacity: 0.5; }

.diag-axes {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0.85rem;
  align-items: stretch;
  margin: 0.85rem 0;
}
.diag-axis { min-width: 0; }
.diag-axis-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--text-faint);
  letter-spacing: 0.2em;
  margin-bottom: 0.3rem;
  text-transform: uppercase;
}
.diag-axis-symbol {
  font-size: 1.6rem;
  color: var(--gold);
  display: inline-block;
  margin-right: 0.5rem;
  vertical-align: middle;
}
.diag-axis-name {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--text);
  letter-spacing: 0.05em;
  display: inline;
}
.diag-axis-meaning {
  font-style: italic;
  color: var(--text-dim);
  font-size: 0.92rem;
  margin-top: 0.3rem;
  line-height: 1.45;
}
.diag-medicine {
  font-family: var(--serif);
  font-size: 1.5rem;
  color: var(--gold);
  letter-spacing: 0.06em;
  margin-top: 0.4rem;
}
.diag-arrow {
  align-self: center;
  font-size: 1.2rem;
  color: var(--gold);
  letter-spacing: -0.1em;
}

.diag-domain {
  display: flex;
  flex-direction: column;
  gap: 0.18rem;
  margin: 0.8rem 0 0.4rem;
}
.domain-row {
  display: grid;
  grid-template-columns: 4.5rem 2.7rem 1fr;
  gap: 0.4rem;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-faint);
}
.domain-row.dominant { color: var(--text); }
.domain-row.dominant .domain-fill { background: var(--gold); }
.domain-track {
  height: 3px;
  background: var(--border-soft);
  border-radius: 2px;
  overflow: hidden;
}
.domain-fill {
  height: 100%;
  background: var(--text-faint);
  transition: width 0.5s ease-out;
}

.diag-section {
  border-top: 1px solid var(--border-soft);
  margin-top: 0.85rem;
  padding-top: 0.85rem;
}
.diag-section-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-faint);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.diag-hex-line {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  margin-bottom: 0.4rem;
}
.diag-hex-num {
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--gold);
}
.diag-hex-name {
  font-family: var(--serif);
  font-size: 1.2rem;
  color: var(--text);
}
.diag-hex-title {
  font-style: italic;
  color: var(--text-dim);
  font-size: 0.95rem;
}
.diag-hex-trigrams {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
}
.diag-hex-reading {
  font-style: italic;
  color: var(--text);
  font-size: 0.98rem;
  line-height: 1.55;
}

.diag-witness {
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 0.7rem;
  align-items: center;
  margin-bottom: 0.55rem;
}
.diag-witness-value {
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--gold);
}
.diag-witness-state {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  padding: 0.1rem 0.5rem;
  border-radius: 2px;
  text-transform: uppercase;
}
.state-dissolution { background: rgba(196, 73, 94, 0.15); color: var(--rose); }
.state-partial { background: rgba(212, 168, 67, 0.12); color: var(--gold); }
.state-preserved { background: rgba(74, 138, 106, 0.15); color: var(--jade); }
.state-tension { background: rgba(90, 90, 138, 0.2); color: var(--indigo); }
.diag-witness-bar-track {
  height: 3px;
  background: var(--border-soft);
  border-radius: 2px;
  overflow: hidden;
}
.diag-witness-bar {
  height: 100%;
  background: var(--jade);
  transition: width 0.5s ease-out;
}
.diag-witness-bar.state-dissolution { background: var(--rose); }
.diag-witness-bar.state-partial { background: var(--gold); }
.diag-witness-bar.state-preserved { background: var(--jade); }
.diag-witness-bar.state-tension { background: var(--indigo); }

/* Layer details inside diag card */
.diag-layer {
  margin-top: 0.6rem;
}
.diag-layer summary {
  list-style: none;
  cursor: pointer;
  padding: 0.4rem 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-top: 1px solid var(--border-soft);
}
.diag-layer summary:hover { color: var(--gold); }
.diag-layer summary::-webkit-details-marker { display: none; }
.diag-layer summary::after {
  content: '+';
  margin-left: auto;
  color: var(--text-faint);
  font-size: 0.95rem;
}
.diag-layer[open] summary::after { content: '−'; }
.diag-layer-icon { color: var(--gold); font-size: 0.95rem; }
.diag-layer-pointer {
  font-family: var(--serif);
  font-style: italic;
  color: var(--text-dim);
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  margin-left: 0.5rem;
}
.diag-layer-body {
  padding: 0.5rem 0 0.2rem;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text);
}
.diag-layer-body h4 {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--text-faint);
  letter-spacing: 0.2em;
  margin: 0.85rem 0 0.25rem;
  text-transform: uppercase;
  font-weight: 400;
}
.diag-layer-body h4:first-child { margin-top: 0.3rem; }
.diag-layer-body p { margin-bottom: 0.6rem; }

/* Tarot two-card layout in diag */
.tarot-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  padding-top: 0.6rem;
}
.tarot-card-mini { min-width: 0; }
.tarot-mini-role {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--text-faint);
  letter-spacing: 0.2em;
  margin-bottom: 0.3rem;
  text-transform: uppercase;
}
.tarot-mini-numeral {
  font-family: var(--serif);
  font-size: 1.5rem;
  color: var(--gold);
}
.tarot-mini-name {
  font-family: var(--serif);
  font-size: 1.1rem;
  color: var(--text);
  margin-top: 0.1rem;
}
.tarot-mini-angle {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-faint);
  letter-spacing: 0.1em;
  margin-top: 0.2rem;
  margin-bottom: 0.5rem;
}

/* ─── Composer ─────────────────────────────────────────────── */
.composer {
  flex: 0 0 auto;
  padding: 0.6rem 1.1rem 1rem;
  border-top: 1px solid var(--border-soft);
  background: var(--bg-translucent-strong);
  backdrop-filter: blur(8px);
}
/* Coffer meter — sits at the bottom of the composer, below the hint. */
.coffer-meter {
  max-width: var(--content-max);
  margin: 0.7rem auto 0;
  padding: 0.4rem 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  border-radius: 4px;
}
.coffer-icon { color: var(--gold); font-size: 0.9rem; }
.coffer-balance { color: var(--text); font-weight: 500; }
.coffer-sep { color: var(--text-faint); }
.coffer-mode {
  letter-spacing: 0.1em;
  color: inherit;
  text-decoration: underline dotted;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: rgba(255, 255, 255, 0.28);
  cursor: pointer;
  transition: text-decoration-color 0.2s;
}
.coffer-mode:hover,
.coffer-mode:focus-visible { text-decoration-color: currentColor; }
.coffer-mode.mode-claude { color: var(--gold); }
.coffer-mode.mode-llama { color: var(--text-dim); font-style: italic; }
.coffer-spacer { flex: 1; }
.coffer-donate {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-dim);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: all 0.2s;
}
.coffer-donate:hover {
  color: var(--gold);
  border-color: var(--gold-soft);
  background: rgba(212, 168, 67, 0.05);
}
.coffer-arrow { transition: transform 0.2s; }
.coffer-donate:hover .coffer-arrow { transform: translateX(2px); }

@media (max-width: 600px) {
  .coffer-meter { font-size: 0.66rem; padding: 0.35rem 0.65rem; }
  .coffer-donate .coffer-arrow { display: none; }
}

.composer-chips {
  max-width: var(--content-max);
  margin: 0 auto 0.7rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
}
.chip {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.88rem;
  padding: 0.28rem 0.7rem;
  border-radius: 100px;
  transition: all 0.2s;
}
.chip:hover {
  border-color: var(--gold-soft);
  color: var(--gold);
  background: rgba(212, 168, 67, 0.05);
}
body.has-messages .composer-chips { display: none; }

.composer-form {
  max-width: var(--content-max);
  margin: 0 auto;
}
.composer-shell {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.45rem 0.55rem 0.45rem 0.85rem;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.composer-shell:focus-within {
  border-color: var(--gold-soft);
  box-shadow: 0 0 0 1px var(--gold-soft), 0 0 18px rgba(212, 168, 67, 0.07);
}
.composer-input {
  width: 100%;
  background: transparent;
  border: none;
  resize: none;
  font-family: var(--serif);
  font-size: 1.05rem;
  line-height: 1.5;
  padding: 0.5rem 0;
  max-height: 200px;
  overflow-y: auto;
}
.composer-input:focus { outline: none; }
.composer-input::placeholder { color: var(--text-faint); font-style: italic; }
.composer-input:disabled { opacity: 0.5; }

.composer-toolbar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.3rem;
}
.layer-toggles {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
}
.layer-toggle {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.32rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--text-faint);
  text-transform: uppercase;
  transition: all 0.2s;
}
.layer-toggle:hover {
  color: var(--text);
  border-color: var(--border);
}
.layer-toggle.active {
  color: var(--gold);
  border-color: var(--gold-soft);
  background: rgba(212, 168, 67, 0.06);
}
@keyframes layerCapShake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-3px); }
  40% { transform: translateX(3px); }
  60% { transform: translateX(-2px); }
  80% { transform: translateX(2px); }
}
.layer-toggle.layer-cap-flash {
  animation: layerCapShake 0.4s ease-in-out;
  border-color: var(--rose);
  color: var(--rose);
}
.layer-toggle .layer-icon { font-size: 0.9rem; }
.layer-toggle .layer-name { font-size: 0.66rem; }

.send-btn {
  margin-left: auto;
  width: 36px;
  height: 36px;
  border-radius: 6px;
  background: var(--gold);
  color: var(--bg-deep);
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.send-btn:hover:not(:disabled) {
  background: var(--gold-soft);
  transform: translateY(-1px);
}
.send-btn:disabled {
  background: var(--border);
  color: var(--text-faint);
  cursor: not-allowed;
}

.composer-hint {
  text-align: center;
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--text-faint);
  letter-spacing: 0.1em;
  margin-top: 0.5rem;
  text-transform: uppercase;
}
@media (max-width: 600px) {
  .composer-hint { display: none; }
}

/* ─── About dialog ─────────────────────────────────────────── */
.about-dialog {
  margin: auto;
  max-width: 620px;
  width: calc(100vw - 2rem);
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0;
  max-height: 85vh;
  font-family: var(--serif);
}
.about-dialog::backdrop {
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}
.about-content {
  padding: 2rem 2.25rem;
  max-height: calc(85vh - 4rem);
  overflow-y: auto;
}
.dialog-close {
  position: absolute;
  top: 0.85rem;
  right: 1rem;
  width: 32px;
  height: 32px;
  border-radius: 4px;
  color: var(--text-dim);
  font-size: 1.4rem;
  line-height: 1;
}
.dialog-close:hover { background: var(--surface-2); color: var(--text); }
.about-content h2 {
  font-family: var(--serif);
  font-size: 1.7rem;
  color: var(--gold);
  letter-spacing: 0.06em;
  margin-bottom: 0.7rem;
  font-weight: 500;
}
.about-content h3 {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin: 1.5rem 0 0.5rem;
  font-weight: 400;
}
.about-content p { margin-bottom: 0.85rem; line-height: 1.65; color: var(--text); }
.about-content .lead {
  font-style: italic;
  color: var(--text);
  font-size: 1.1rem;
  border-left: 2px solid var(--gold-soft);
  padding-left: 1rem;
  margin-bottom: 1.5rem;
}
.about-content ul { padding-left: 1.5rem; margin-bottom: 0.85rem; }
.about-content li { margin-bottom: 0.4rem; }
.about-content .signoff {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-soft);
  font-style: italic;
  color: var(--text-dim);
  font-size: 0.95rem;
}

/* ─── Mobile ───────────────────────────────────────────────── */
@media (max-width: 700px) {
  :root { --sidebar-w: 85vw; }
  .welcome-title { letter-spacing: 0.25em; }
  .diag-axes { grid-template-columns: 1fr; gap: 0.7rem; }
  .diag-arrow { transform: rotate(90deg); }
  .tarot-pair { grid-template-columns: 1fr; gap: 1rem; }
  .layer-toggle .layer-name { display: none; }
  .layer-toggle { padding: 0.32rem 0.5rem; }
}

/* ─── Reading bar (sticky, compact summary) ───────────────── */
.reading-bar {
  flex: 0 0 auto;
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(to bottom, var(--surface-translucent), var(--surface-translucent-soft));
  backdrop-filter: blur(8px);
  z-index: 9;
  animation: msgIn 0.4s ease-out;
}
.reading-bar-content {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0.55rem 1.1rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  background: none;
  border: none;
  cursor: pointer;
  transition: color 0.2s;
}
.reading-bar-content:hover { color: var(--text); }
.reading-bar-content:hover .rb-expand { color: var(--gold); }
.rb-cell {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  white-space: nowrap;
}
.rb-symbol { color: var(--gold); font-size: 1rem; line-height: 1; }
.rb-arrow { color: var(--gold-soft); font-size: 0.95rem; }
.rb-name { font-weight: 500; }
.rb-medicine .rb-name { color: var(--gold); font-family: var(--serif); font-size: 1rem; font-style: italic; }
.rb-hex-num { color: var(--gold); }
.rb-hex-name { color: var(--text-dim); font-style: italic; font-family: var(--serif); font-size: 1rem; }
.rb-witness {
  margin-left: auto;
  font-size: 0.66rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.rb-witness-state {
  padding: 0.1rem 0.45rem;
  border-radius: 2px;
  font-family: var(--mono);
}
.rb-expand {
  font-size: 1rem;
  color: var(--text-faint);
  transition: color 0.2s;
}

@media (max-width: 640px) {
  .reading-bar-content { gap: 0.4rem; padding: 0.5rem 0.7rem; font-size: 0.72rem; }
  .rb-witness { display: none; }
  .rb-hex-name { display: none; }
}

/* ─── Reading panel ─────────────────────────────────────── */
/* Two dock states: dock-right (default), dock-left. Plus closed
   (hidden). Docked panels are flex siblings of .main-shell inside
   .app — the browser handles all the pushing automatically. */

/* Always-applied base */
.reading-panel {
  background: var(--surface);
  display: flex;
  flex-direction: column;
  min-height: 0;
  animation: panelIn 0.25s ease-out;
  z-index: 80;
}
.reading-panel.dragging { opacity: 0.92; transition: none; user-select: none; }
@keyframes panelIn {
  from { opacity: 0; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1); }
}

/* Dock right — flex sibling, placed AFTER main-shell via order. */
.reading-panel-dock-right {
  position: relative;
  flex: 0 0 380px;
  max-width: 92vw;
  border-left: 1px solid var(--border);
  border-radius: 0;
  box-shadow: -8px 0 24px rgba(0, 0, 0, 0.4);
  order: 1;
}

/* Dock left — flex sibling, placed BEFORE main-shell via order. */
.reading-panel-dock-left {
  position: relative;
  flex: 0 0 380px;
  max-width: 92vw;
  border-right: 1px solid var(--border);
  border-radius: 0;
  box-shadow: 8px 0 24px rgba(0, 0, 0, 0.4);
  order: -1;
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--border-soft);
  user-select: none;
  background: linear-gradient(to bottom, var(--panel-header-bg-1), var(--panel-header-bg-2));
}
.panel-title {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
}
.panel-controls {
  margin-left: auto;
  display: flex;
  gap: 0.15rem;
}
.panel-btn {
  width: 28px;
  height: 28px;
  border-radius: 4px;
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}
.panel-btn:hover { background: var(--surface-2); color: var(--gold); }
.panel-btn.panel-close { font-size: 1.25rem; }
.panel-btn.panel-close:hover { color: var(--rose); }

.panel-body {
  padding: 0.85rem 1rem 1rem;
  overflow-y: auto;
  flex: 1;
  font-size: 0.92rem;
}

/* Reuse diag styles inside the panel */
.panel-body .diag-head { padding-bottom: 0.6rem; margin-bottom: 0.7rem; }
.panel-body .diag-axes { gap: 0.6rem; margin: 0.7rem 0; }
.panel-body .diag-medicine { font-size: 1.3rem; }
.panel-body .diag-hex-name { font-size: 1.1rem; }
.panel-body .diag-hex-num { font-size: 0.95rem; }
.panel-body .diag-section { margin-top: 0.7rem; padding-top: 0.7rem; }
.panel-body .diag-layer-body p { font-size: 0.88rem; line-height: 1.55; }
.panel-body .diag-layer-body h4 { font-size: 0.55rem; }

@media (max-width: 800px) {
  /* On narrow screens, .app stays a row but the panel becomes a bottom
     sheet — pulled out of flex flow via position:fixed regardless of
     dock state. Dock-side affordances only matter on wider viewports. */
  .reading-panel-dock-right,
  .reading-panel-dock-left {
    position: fixed !important;
    top: auto !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    max-height: 70vh;
    flex: 0 0 auto !important;
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    box-shadow: 0 -12px 36px rgba(0, 0, 0, 0.5);
    order: 0;
  }
  /* Flip is hidden on mobile (bottom-sheet, no sides) */
  .reading-panel #panel-flip { display: none; }
}

/* ─── Essay (why.html) ────────────────────────────────────── */
/* Override the global html, body { height:100%; overflow:hidden } so the
   essay can actually scroll. Class-on-html scopes this strictly to why.html. */
html.essay-page,
html.essay-page body.essay-body {
  height: auto !important;
  overflow: auto !important;
}
body.essay-body {
  background: var(--bg);
  display: block;
}

.essay-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg-translucent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-soft);
  padding: 0.85rem 1.5rem;
}
.essay-back, .essay-back-bottom {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.2s;
}
.essay-back:hover, .essay-back-bottom:hover { color: var(--gold); }
.back-arrow { font-size: 1rem; }
.back-mark { color: var(--gold); font-size: 1rem; margin-left: 0.4rem; }
.back-name { font-family: var(--serif); font-size: 0.95rem; letter-spacing: 0.3em; color: var(--text); }

main.essay {
  display: block;
  max-width: 720px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding: 3rem 1.5rem 2rem;
  box-sizing: border-box;
}
.essay article {
  font-family: var(--serif);
  font-size: 1.13rem;
  line-height: 1.75;
  color: var(--text);
}
.essay-title {
  font-family: var(--serif);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--gold);
  text-align: center;
  margin-bottom: 0.4rem;
  text-shadow: 0 0 30px rgba(212, 168, 67, 0.15);
}
.essay-subtitle {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--text-dim);
  text-align: center;
  letter-spacing: 0.05em;
  margin-bottom: 2.5rem;
}
.essay-lead {
  font-style: italic;
  color: var(--text);
  font-size: 1.18rem;
  line-height: 1.7;
  border-left: 2px solid var(--gold-soft);
  padding-left: 1.25rem;
  margin-bottom: 2rem;
}
.essay article h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.85rem;
  color: var(--gold);
  letter-spacing: 0.04em;
  margin: 3rem 0 1.1rem;
}
.essay article p {
  margin-bottom: 1.2rem;
}
.essay article p strong, .essay article li strong {
  color: var(--gold);
  font-weight: 600;
}
.essay article em {
  color: var(--text);
  font-weight: 400;
}
.essay article ul {
  margin: 1.2rem 0 1.5rem 1.5rem;
}
.essay article li {
  margin-bottom: 0.7rem;
  line-height: 1.65;
}
.essay article a {
  color: var(--gold);
  text-decoration: underline;
  text-decoration-style: dotted;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.2s;
}
.essay article a:hover { color: var(--gold-soft); }
.essay article hr {
  border: none;
  border-top: 1px solid var(--border-soft);
  margin: 2.5rem auto;
  width: 60%;
}
.essay-signoff {
  font-style: italic;
  color: var(--text-dim);
  text-align: center;
  font-size: 1.05rem;
  margin-top: 2rem !important;
}

.essay-footer {
  border-top: 1px solid var(--border-soft);
  padding: 2rem 1.5rem 3rem;
  text-align: center;
  background: var(--bg);
}

.essay-kin {
  margin: 0 auto 1.8rem;
  max-width: 640px;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  line-height: 1.9;
}
.essay-kin-line { margin: 0.3rem 0; }
.essay-kin-label {
  display: inline-block;
  min-width: 4em;
  margin-right: 0.6em;
  color: var(--gold);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 500;
}
.essay-kin a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: color .15s ease, border-color .15s ease;
}
.essay-kin a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}
.essay-kin-sep {
  color: var(--text-faint);
  margin: 0 0.35em;
}
@media (max-width: 540px) {
  .essay-kin-label { display: block; min-width: 0; margin: 0 0 0.2em; }
}

@media (max-width: 700px) {
  .essay { padding: 2rem 1.25rem 2rem; }
  .essay article { font-size: 1.05rem; }
  .essay-lead { font-size: 1.08rem; padding-left: 1rem; }
  .essay article h2 { font-size: 1.55rem; margin: 2.2rem 0 0.9rem; }
}

/* ─── Error toast ──────────────────────────────────────────── */
.error-toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--rose);
  border-left: 3px solid var(--rose);
  padding: 0.7rem 1.1rem;
  border-radius: 4px;
  color: var(--text);
  font-size: 0.9rem;
  z-index: 200;
  max-width: 420px;
  animation: msgIn 0.3s;
}
.error-toast .error-title {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--rose);
  letter-spacing: 0.1em;
  margin-bottom: 0.2rem;
}
.error-toast.toast-info {
  border-color: var(--gold-soft);
  border-left-color: var(--gold);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.78rem;
}

/* Cloudflare Turnstile — invisible by default (interaction-only mode).
   When CF flags a visitor and an interactive challenge is needed, the
   widget renders here in the bottom-right corner. Most users never see it. */
#turnstile-mount {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  z-index: 1500;
}
#turnstile-mount:empty { display: none; }