:root {
  --bg-deep: #0e0c0a; --bg-room: #151210; --bg-desk: #1a1714;
  --bg-card: #1f1b17; --bg-thinking: #141210;
  --text-primary: #d8cfc3; --text-secondary: #8a7e70;
  --text-faded: #5a5248; --text-thinking: #7a6e60;
  --accent-amber: #c49a6c; --accent-amber-soft: #a07a52;
  --accent-blue: #7e9cb5; --accent-blue-soft: #5e7c95;
  --border-subtle: #2a2520; --border-warm: #3a3228;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 17px; -webkit-font-smoothing: antialiased; }
body {
  background: var(--bg-deep); color: var(--text-primary);
  font-family: "Crimson Pro", Georgia, serif; font-weight: 400;
  line-height: 1.7; min-height: 100vh;
}
body::before {
  content: ""; position: fixed; inset: 0; opacity: 0.025;
  pointer-events: none; z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.container { max-width: 720px; margin: 0 auto; padding: 3rem 2rem 6rem; }
.header {
  text-align: center; margin-bottom: 3rem;
  padding-bottom: 2rem; border-bottom: 1px solid var(--border-subtle);
}
.header h1 {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 300; font-size: 2rem; color: var(--text-primary);
  letter-spacing: 0.06em; margin-bottom: 0.4em;
}
.header p {
  font-size: 0.85rem; font-style: italic; color: var(--text-secondary);
}
.message {
  margin-bottom: 2rem; padding-left: 1.4rem;
  border-left: 2px solid transparent;
}
.message.human { border-left-color: var(--accent-amber-soft); }
.message.assistant { border-left-color: var(--accent-blue-soft); padding-left: 1.8rem; }
.message-speaker {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 500; font-size: 0.85rem; letter-spacing: 0.08em;
  text-transform: uppercase; margin-bottom: 0.3em;
}
.message.human .message-speaker { color: var(--accent-amber); }
.message.assistant .message-speaker { color: var(--accent-blue); }
.message-text {
  font-size: 1rem; line-height: 1.75; color: var(--text-primary);
  white-space: pre-wrap; word-wrap: break-word;
}
.message.assistant .message-text { color: #c8c0b6; }
.message-time {
  font-family: "JetBrains Mono", monospace; font-size: 0.6rem;
  color: var(--text-faded); opacity: 0.5; margin-top: 0.4em;
  letter-spacing: 0.05em;
}
.thinking-block { display: none; margin-top: 0.8rem; margin-bottom: 0.4rem; }
.thinking-block.visible { display: block; }
.thinking-toggle-inline {
  font-family: "JetBrains Mono", monospace; font-size: 0.65rem;
  letter-spacing: 0.06em; color: var(--text-faded);
  background: var(--bg-thinking); border: 1px solid var(--border-subtle);
  padding: 0.3em 0.8em; cursor: pointer; transition: all 0.3s;
  display: inline-block; margin-bottom: 0.5em;
}
.thinking-toggle-inline:hover { color: var(--text-secondary); border-color: var(--border-warm); }
.thinking-content {
  font-family: "JetBrains Mono", monospace; font-size: 0.78rem;
  font-weight: 300; line-height: 1.7; color: var(--text-thinking);
  background: var(--bg-thinking); border-left: 1px solid var(--border-subtle);
  padding: 1rem 1.2rem; white-space: pre-wrap; word-wrap: break-word;
  max-height: 300px; overflow-y: auto;
}
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--border-warm); border-radius: 3px; }
::selection { background: rgba(196, 154, 108, 0.2); color: var(--text-primary); }