:root {
  --bg: #f6f6f3;
  --bg-elev: #ffffff;
  --ink: #1a1a1a;
  --ink-soft: #585858;
  --teal: #0e3b36;
  --teal-soft: #d8e6e3;
  --border: #e6e6e0;
  --user-bubble: #e9e9e2;
  --bo-bubble: #ffffff;
  --pill-bg: #d8e6e3;
  --pill-ink: #0e3b36;
  --error: #b3261e;
  --max-width: 560px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  font-feature-settings: "ss01", "cv11";
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

#app {
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

/* ── Gate ───────────────────────────────────────────────────────────── */

.gate {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.gate-card {
  width: 100%;
  max-width: 380px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.03);
}

.gate-card h1 {
  font-size: 22px;
  font-weight: 600;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

.gate-card p {
  margin: 0 0 18px;
  color: var(--ink-soft);
  font-size: 14px;
}

.gate-card label {
  display: block;
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.gate-card input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  background: var(--bg);
  color: var(--ink);
  outline: none;
}

.gate-card input[type="password"]:focus {
  border-color: var(--teal);
}

.gate-card button {
  width: 100%;
  margin-top: 14px;
  padding: 11px 14px;
  border: none;
  border-radius: 8px;
  background: var(--teal);
  color: white;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}

.gate-card button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.gate-error {
  color: var(--error);
  font-size: 13px;
  margin-top: 10px;
  min-height: 16px;
}

/* ── Chat shell ─────────────────────────────────────────────────────── */

.chat-shell {
  flex: 1;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 16px;
}

.chat-header {
  padding: 14px 4px 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.chat-header .title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.chat-header .subtitle {
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 2px;
}

.chat-header button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--ink-soft);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
}

.chat-header button:hover {
  background: var(--bg-elev);
}

/* ── Messages ───────────────────────────────────────────────────────── */

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px 0 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.empty-state {
  color: var(--ink-soft);
  font-size: 14px;
  text-align: center;
  padding: 40px 24px;
  line-height: 1.5;
}

.empty-state strong { color: var(--ink); display: block; margin-bottom: 6px; font-weight: 600; }

.bubble {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 15px;
  white-space: pre-wrap;
  word-wrap: break-word;
  line-height: 1.45;
}

.bubble.user {
  align-self: flex-end;
  background: var(--user-bubble);
  border-bottom-right-radius: 4px;
}

.bubble.bo {
  align-self: flex-start;
  background: var(--bo-bubble);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}

.bubble.bo.streaming::after {
  content: "▍";
  display: inline-block;
  margin-left: 1px;
  color: var(--ink-soft);
  animation: blink 1s steps(2, start) infinite;
}

@keyframes blink {
  to { visibility: hidden; }
}

.bubble.error {
  align-self: stretch;
  background: #fff3f0;
  border: 1px solid #f5c2bb;
  color: var(--error);
  border-radius: 8px;
  font-size: 13px;
}

.pill {
  display: inline-block;
  background: var(--pill-bg);
  color: var(--pill-ink);
  font-size: 12px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 12px;
  margin: 0 2px;
  vertical-align: baseline;
}

.pill .kind {
  opacity: 0.7;
  font-weight: 400;
  margin-right: 4px;
  text-transform: lowercase;
}

/* ── Composer ───────────────────────────────────────────────────────── */

.composer {
  border-top: 1px solid var(--border);
  padding: 10px 0 12px;
  display: flex;
  gap: 8px;
  align-items: flex-end;
  background: var(--bg);
}

.composer textarea {
  flex: 1;
  resize: none;
  min-height: 38px;
  max-height: 140px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 18px;
  font-family: inherit;
  font-size: 15px;
  background: var(--bg-elev);
  color: var(--ink);
  outline: none;
  line-height: 1.4;
}

.composer textarea:focus {
  border-color: var(--teal);
}

.composer button {
  border: none;
  background: var(--teal);
  color: white;
  border-radius: 18px;
  height: 38px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  flex-shrink: 0;
}

.composer button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.notice {
  text-align: center;
  font-size: 12px;
  color: var(--ink-soft);
  padding: 8px 0 4px;
}

/* ── Onboarding ───────────────────────────────────────────────────────── */

.onboarding-card { max-width: 420px; }

.onboarding-card label {
  margin-top: 12px;
}
.onboarding-card label:first-of-type { margin-top: 0; }

.onboarding-card label .muted {
  color: var(--ink-soft);
  font-weight: 400;
  font-size: 12px;
  margin-left: 4px;
}

.onboarding-card input[type="text"],
.onboarding-card input[type="number"],
.onboarding-card select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  background: var(--bg);
  color: var(--ink);
  outline: none;
}
.onboarding-card input:focus,
.onboarding-card select:focus {
  border-color: var(--teal);
}

.onboarding-card button.secondary {
  width: 100%;
  margin-top: 8px;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}
.onboarding-card button.secondary:hover {
  background: var(--bg);
}

.onboarding-card button.link-btn {
  width: 100%;
  margin-top: 6px;
  padding: 8px 14px;
  border: none;
  background: transparent;
  color: var(--ink-soft);
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.onboarding-card button.link-btn:hover { color: var(--ink); }

/* ── Chat header tweaks ──────────────────────────────────────────────── */

.chat-header .header-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.chat-header .header-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--ink-soft);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
}
.chat-header .header-btn:hover {
  background: var(--bg-elev);
  color: var(--ink);
}