:root {
  --paper: #f4f3ef;
  --paper-deep: #e9e7e0;
  --ink-chat: #26241f;
  --glass: #141820;
  --glass-raised: #1c2230;
  --glass-line: #2a3245;
  --phosphor: #8fd0c6;
  --phosphor-dim: #43605c;
  --pin-amber: #e8a33d;
  --text-glass: #d8dde8;
  --text-glass-dim: #8891a3;
  --user-bubble: #26241f;
  --radius: 10px;
  font-size: 16px;
}

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

body {
  display: grid;
  grid-template-columns: 1fr minmax(340px, 420px);
  height: 100vh;
  font-family: "Inter", system-ui, sans-serif;
  background: var(--paper);
  color: var(--ink-chat);
}

.mono { font-family: "IBM Plex Mono", monospace; }

/* ---------- chat side (your side of the glass) ---------- */

.chat-side {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border-right: 1px solid var(--paper-deep);
}

.chat-header {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  padding: 1.1rem 1.6rem 1rem;
  border-bottom: 1px solid var(--paper-deep);
}

.chat-header h1 {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: 0.8rem;
  color: #7a766c;
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#new-chat {
  font: 500 0.8rem "Inter", sans-serif;
  color: #7a766c;
  background: none;
  border: 1px solid #d4d1c8;
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
  cursor: pointer;
}
#new-chat:hover { color: var(--ink-chat); border-color: #a9a598; }

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.chat-empty {
  margin: auto;
  max-width: 34rem;
  text-align: center;
  color: #8d897d;
  font-size: 0.95rem;
  line-height: 1.6;
}

.msg {
  max-width: 76%;
  padding: 0.65rem 0.95rem;
  border-radius: var(--radius);
  line-height: 1.55;
  font-size: 0.95rem;
  white-space: pre-wrap;
  overflow-wrap: break-word;
}

.msg.user {
  align-self: flex-end;
  background: var(--user-bubble);
  color: var(--paper);
  border-bottom-right-radius: 3px;
}

.msg.assistant {
  align-self: flex-start;
  background: #fff;
  border: 1px solid var(--paper-deep);
  border-bottom-left-radius: 3px;
}

.msg.assistant.thinking::after {
  content: "▋";
  animation: blink 1s steps(1) infinite;
  color: #b0ac9f;
}
@keyframes blink { 50% { opacity: 0; } }

.composer {
  display: flex;
  gap: 0.6rem;
  padding: 0.9rem 1.6rem 1.1rem;
  border-top: 1px solid var(--paper-deep);
}

#input {
  flex: 1;
  resize: none;
  font: 0.95rem/1.5 "Inter", sans-serif;
  padding: 0.6rem 0.85rem;
  border: 1px solid #d4d1c8;
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink-chat);
  max-height: 9rem;
}
#input:focus { outline: 2px solid var(--ink-chat); outline-offset: -1px; }

#send {
  font: 600 0.9rem "Inter", sans-serif;
  background: var(--ink-chat);
  color: var(--paper);
  border: none;
  border-radius: var(--radius);
  padding: 0 1.2rem;
  cursor: pointer;
}
#send:disabled { opacity: 0.45; cursor: default; }

/* ---------- mirror side (behind the glass) ---------- */

.mirror-side {
  background: var(--glass);
  color: var(--text-glass);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.mirror-header { padding: 1.15rem 1.4rem 0.9rem; }

.mirror-eyebrow {
  font: 500 0.68rem "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--phosphor-dim);
}

.mirror-header h2 {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 500;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  margin-top: 0.25rem;
}

.mirror-status {
  font: 400 0.75rem "IBM Plex Mono", monospace;
  color: var(--text-glass-dim);
  margin-top: 0.4rem;
  min-height: 1.1em;
}
.mirror-status.live { color: var(--phosphor); }

.cards {
  flex: 1;
  padding: 0.4rem 1.4rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.cards-divider {
  font: 500 0.62rem "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-glass-dim);
  border-top: 1px solid var(--glass-line);
  padding-top: 0.9rem;
  margin-top: 0.2rem;
}

.card {
  background: var(--glass-raised);
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  padding: 0.8rem 0.95rem 0.95rem;
  transition: border-color 0.5s;
}
.card.flipped { border-color: var(--phosphor); }
.card.pinned { border-color: var(--pin-amber); }

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.65rem;
}

.card-title {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 500;
  font-size: 0.95rem;
}

.card-meta {
  font: 400 0.62rem "IBM Plex Mono", monospace;
  color: var(--text-glass-dim);
}

.belief {
  display: grid;
  grid-template-columns: 7.2rem 1fr 3.1rem 1.5rem;
  align-items: center;
  gap: 0.55rem;
  padding: 0.17rem 0;
}

.belief-label {
  font-size: 0.78rem;
  color: var(--text-glass-dim);
  white-space: nowrap;
}
.belief.top .belief-label { color: var(--text-glass); }

.meter {
  height: 7px;
  border-radius: 4px;
  background: #10141c;
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  width: 0;
  border-radius: 4px;
  background: var(--phosphor-dim);
  transition: width 0.7s cubic-bezier(0.22, 1, 0.36, 1), background-color 0.4s;
}
.belief.top .meter-fill { background: var(--phosphor); }
.belief.pinned .meter-fill { background: var(--pin-amber); }

.belief-pct {
  font: 500 0.72rem "IBM Plex Mono", monospace;
  color: var(--text-glass-dim);
  text-align: right;
}
.belief.top .belief-pct { color: var(--text-glass); }

.pin-btn {
  font-size: 0.85rem;
  line-height: 1;
  background: none;
  border: none;
  color: transparent;
  cursor: pointer;
  padding: 0.1rem;
}
.belief:hover .pin-btn { color: var(--text-glass-dim); }
.pin-btn:hover { color: var(--pin-amber) !important; }
.belief.pinned .pin-btn { color: var(--pin-amber); }

.pinned-tag {
  font: 500 0.6rem "IBM Plex Mono", monospace;
  color: var(--pin-amber);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.mirror-footer {
  padding: 0.9rem 1.4rem 1.2rem;
  border-top: 1px solid var(--glass-line);
}

.alpha-label {
  display: flex;
  justify-content: space-between;
  font: 500 0.68rem "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-glass-dim);
  margin-bottom: 0.35rem;
}
.alpha-label .mono { color: var(--phosphor); }

#alpha {
  width: 100%;
  accent-color: var(--phosphor);
}

.mirror-note {
  font-size: 0.72rem;
  line-height: 1.5;
  color: var(--text-glass-dim);
  margin-top: 0.7rem;
}
.pin-glyph { color: var(--pin-amber); }

.mirror-model {
  font-size: 0.62rem;
  color: #565e70;
  margin-top: 0.6rem;
}

/* ---------- small screens ---------- */

@media (max-width: 860px) {
  body {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 1.2fr) minmax(0, 1fr);
    height: 100vh;
  }
  .chat-side { border-right: none; border-bottom: 1px solid var(--paper-deep); }
  .msg { max-width: 88%; }
}

@media (prefers-reduced-motion: reduce) {
  .meter-fill { transition: none; }
  .msg.assistant.thinking::after { animation: none; }
}