/* ── Tokens ─────────────────────────────────────────────── */
:root {
  --bg:          #f7f4ef;
  --surface:     #ffffff;
  --surface2:    #f2efe9;
  --border:      #ddd8d0;
  --border-dark: #b8b0a4;
  --text:        #1a1714;
  --text-mid:    #5c564f;
  --text-dim:    #9a9088;
  --accent:      #2d4a3e;
  --accent-soft: #e8f0ec;
  --accent-hover:#1e3329;
  --green:       #2d6a4f;
  --red:         #8b1a1a;
  --red-soft:    #fdf2f2;
  --mono:        'Inconsolata', 'Courier New', monospace;
  --serif:       'Cormorant Garamond', Georgia, serif;
  --radius:      4px;
  --shadow:      0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.04);
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.6;
}

/* ── Shell ──────────────────────────────────────────────── */
.shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 900px;
  margin: 0 auto;
  background: var(--surface);
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
}

/* ── Header ─────────────────────────────────────────────── */
.hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}

.hdr-left { display: flex; align-items: center; gap: 0.75rem; }

.hdr-sigil { width: 32px; height: 32px; opacity: 0.8; }

.hdr-title {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.03em;
  line-height: 1.2;
}

.hdr-sub {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.hdr-right { display: flex; align-items: center; gap: 0.75rem; }

.tier-badge {
  font-size: 11px;
  color: var(--text-mid);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.3rem 0.65rem;
  letter-spacing: 0.05em;
}

.hdr-btn {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  padding: 0.3rem 0.75rem;
  background: transparent;
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  color: var(--text-mid);
  cursor: pointer;
  transition: all 0.2s;
}

.hdr-btn:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Toolbar ─────────────────────────────────────────────── */
.toolbar {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.6rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
  flex-shrink: 0;
  flex-wrap: wrap;
}

.toolbar-group { display: flex; align-items: center; gap: 0.5rem; }

.tool-label {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  white-space: nowrap;
}

.tool-select {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.3rem 0.6rem;
  outline: none;
  cursor: pointer;
}

.tool-select:focus { border-color: var(--accent); }

.slider-wrap { display: flex; align-items: center; gap: 0.4rem; }

.slider-lbl { font-size: 10px; color: var(--text-dim); }

.tool-slider {
  width: 80px;
  accent-color: var(--accent);
  cursor: pointer;
}

.tool-input {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.3rem 0.6rem;
  outline: none;
  width: 200px;
  transition: border-color 0.2s;
}

.tool-input:focus { border-color: var(--accent); }

.token-display {
  font-size: 11px;
  color: var(--text-mid);
  background: var(--accent-soft);
  border: 1px solid #c8ddd4;
  border-radius: var(--radius);
  padding: 0.3rem 0.65rem;
}

.token-save {
  color: var(--green);
  font-weight: 500;
  margin-left: 0.25rem;
}

/* ── Chat area ───────────────────────────────────────────── */
.chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ── Welcome ─────────────────────────────────────────────── */
.welcome {
  text-align: center;
  margin: auto;
  padding: 2rem;
}

.welcome-title {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 300;
  font-style: italic;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.welcome-body {
  font-size: 13px;
  color: var(--text-mid);
  line-height: 2;
}

.intent-pills {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 0.75rem;
}

.pill {
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.65rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 99px;
  color: var(--text-dim);
}

/* ── Messages ────────────────────────────────────────────── */
.msg {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  animation: fadeUp 0.3s ease both;
}

.msg.user { align-items: flex-end; }
.msg.assistant { align-items: flex-start; }
.msg.system { align-items: center; }

.msg-bubble {
  max-width: 75%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

.msg.user .msg-bubble {
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 2px;
}

.msg.assistant .msg-bubble {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  border-bottom-left-radius: 2px;
}

.msg.system .msg-bubble {
  background: var(--accent-soft);
  border: 1px solid #c8ddd4;
  color: var(--green);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-align: center;
}

.msg.error .msg-bubble {
  background: var(--red-soft);
  border: 1px solid #f0c0c0;
  color: var(--red);
}

.msg-meta {
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  padding: 0 0.25rem;
}

/* Module result cards */
.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  max-width: 75%;
  font-size: 12px;
  line-height: 1.8;
}

.result-card .rc-title {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.result-card .rc-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.3rem;
}

.result-card .rc-key {
  color: var(--text-dim);
  min-width: 120px;
  flex-shrink: 0;
}

.result-card .rc-val { color: var(--text); }

.metric-row {
  display: flex;
  gap: 0.75rem;
  margin: 0.75rem 0;
  flex-wrap: wrap;
}

.metric-box {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem 0.75rem;
  text-align: center;
  min-width: 80px;
}

.metric-box .mv { font-size: 20px; font-weight: 500; color: var(--text); }
.metric-box .ml { font-size: 10px; color: var(--text-dim); margin-top: 2px; }

/* Typing indicator */
.typing {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0.75rem 1rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: fit-content;
}

.typing span {
  width: 6px; height: 6px;
  background: var(--text-dim);
  border-radius: 50%;
  animation: bounce 1.2s infinite;
}

.typing span:nth-child(2) { animation-delay: 0.2s; }
.typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); }
}

/* ── Input bar ───────────────────────────────────────────── */
.input-bar {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}

.input-wrap {
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
}

.msg-input {
  flex: 1;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.65rem 0.9rem;
  outline: none;
  resize: none;
  line-height: 1.5;
  max-height: 120px;
  transition: border-color 0.2s;
}

.msg-input:focus { border-color: var(--accent); }

.send-btn {
  width: 38px;
  height: 38px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.2s;
}

.send-btn:hover { background: var(--accent-hover); }
.send-btn:disabled { background: var(--border-dark); cursor: not-allowed; }

.input-meta {
  font-size: 10px;
  color: var(--text-dim);
  margin-top: 0.4rem;
  letter-spacing: 0.05em;
  min-height: 14px;
}

/* ── Footer ──────────────────────────────────────────────── */
.ftr {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  flex-shrink: 0;
  flex-wrap: wrap;
}

.ftr a { color: var(--text-dim); text-decoration: none; transition: color 0.2s; }
.ftr a:hover { color: var(--accent); }

/* ── Modal ───────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn 0.2s ease;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 440px;
  margin: 1rem;
  box-shadow: 0 8px 40px rgba(0,0,0,0.12);
  animation: fadeUp 0.3s ease;
}

.modal-hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 400;
  color: var(--accent);
}

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  color: var(--text-dim);
  cursor: pointer;
  line-height: 1;
  padding: 0;
}

.modal-body { padding: 1.25rem; }

.modal-note {
  font-size: 12px;
  color: var(--text-mid);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.field-row { margin-bottom: 0.85rem; }

.field-label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
}

.field-input {
  width: 100%;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 0.8rem;
  outline: none;
  transition: border-color 0.2s;
}

.field-input:focus { border-color: var(--accent); }

.modal-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.modal-btn {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-dark);
  background: transparent;
  color: var(--text-mid);
  cursor: pointer;
  transition: all 0.2s;
}

.modal-btn:hover { background: var(--surface2); }

.modal-btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.modal-btn.primary:hover { background: var(--accent-hover); }

.modal-btn.danger {
  border-color: #f0c0c0;
  color: var(--red);
}

.modal-btn.danger:hover { background: var(--red-soft); }

.modal-status {
  margin-top: 0.75rem;
  font-size: 11px;
  color: var(--green);
  min-height: 16px;
}

/* ── Animations ──────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 600px) {
  .toolbar { gap: 0.75rem; }
  .tool-input { width: 140px; }
  .msg-bubble { max-width: 90%; }
  .result-card { max-width: 95%; }
  .hdr-sub { display: none; }
}