:root {
  --bg: #f6f4ef;
  --panel: #fffdf9;
  --ink: #2b2b27;
  --muted: #6f6a60;
  --accent: #7a5c3e;
  --accent-soft: #efe7db;
  --user: #e7eef0;
  --border: #e4ddd0;
  --max: 720px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  display: flex;
  flex-direction: column;
}

.topbar {
  text-align: center;
  padding: 18px 16px 8px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}
.topbar h1 {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  color: var(--accent);
  display: inline;
}
.topbar #new-chat {
  margin-left: 0.6em;
  font-size: 0.65rem;
  vertical-align: middle;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: 3px;
}
.topbar #new-chat:hover {
  color: var(--accent);
  border-color: var(--accent-soft);
}
.tagline {
  margin: 2px 0 0;
  font-size: 0.85rem;
  font-style: italic;
  color: var(--muted);
}

.log {
  flex: 1;
  overflow-y: auto;
  padding: 20px 16px;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
}

.msg { margin: 0 0 18px; display: flex; }
.msg-user { justify-content: flex-end; }
.msg-body {
  max-width: 88%;
  padding: 12px 16px;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
}
.msg-user .msg-body {
  background: var(--user);
  border-color: #d6e1e4;
}

.msg-body p { margin: 0 0 0.7em; }
.msg-body p:last-child { margin-bottom: 0; }
.msg-body h1, .msg-body h2, .msg-body h3, .msg-body h4 {
  font-size: 0.78rem;
  text-transform: lowercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 0.4em 0 0.5em;
  font-family: ui-sans-serif, system-ui, sans-serif;
}
.msg-body blockquote {
  margin: 0.4em 0;
  padding: 8px 14px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 8px 8px 0;
  font-style: italic;
}
.msg-body code {
  background: #efeae0;
  padding: 0.1em 0.35em;
  border-radius: 4px;
  font-size: 0.9em;
}
.msg-body a { color: var(--accent); }

.thinking::after {
  content: "·  ·  ·";
  letter-spacing: 0.2em;
  color: var(--muted);
  animation: pulse 1.2s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 0.3; } 50% { opacity: 1; } }

.error { color: #9a3b2e; font-style: italic; }

.composer {
  display: flex;
  gap: 8px;
  padding: 12px 16px 18px;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  border-top: 1px solid var(--border);
  background: var(--panel);
}
#input {
  flex: 1;
  resize: none;
  font: inherit;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  max-height: 160px;
}
#mic {
  flex-shrink: 0;
  padding: 0 12px;
  font-size: 1.1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  color: var(--muted);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
#mic:hover { color: var(--accent); border-color: var(--accent-soft); }
#mic.recording {
  color: #c0392b;
  border-color: #e8b4b0;
  background: #fdf0ee;
  animation: mic-pulse 1s ease-in-out infinite;
}
#mic:disabled { opacity: 0.4; cursor: default; }
@keyframes mic-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.55; } }

#send {
  font: inherit;
  padding: 0 18px;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}
#send:disabled { opacity: 0.5; cursor: default; }