:root{--background: #ede8e0;--foreground: #1a1a1a;--primary: #1a1a1a;--primary-foreground: #ede8e0;--secondary: #e3ddd2;--muted: #e3ddd2;--muted-foreground: #5d5953;--accent: #e5e0d7;--bubble-received: #f4f0e7;--destructive: #9a3f3f;--success: #2d6b41;--warning: #c9b99a;--border: #d4cfc7;--terminal-bg: #1a1a1a;--terminal-fg: #ede8e0;--terminal-accent: #c9b99a;--font-sans: "TikTok Sans", system-ui, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, monospace;--tool-bg: #14130f;--tool-panel: #1d1b16;--tool-border: #32302a;--tool-fg: #ece7df;--tool-muted: #8f8a80}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--tool-bg);color:var(--tool-fg);font-family:var(--font-sans);letter-spacing:-.01em}.app{display:flex;height:100%;overflow:hidden}.panel{width:340px;flex:none;overflow-y:auto;border-right:1px solid var(--tool-border);background:var(--tool-panel);padding:16px 16px 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var(--border)}.room-row.active{background:var(--accent)}.room-main{flex:1;min-width:0}.room-name-line{display:flex;align-items:baseline;gap:8px}.room-name{font-size:15px;font-weight:600}.room-time{margin-left:auto;font-family:var(--font-mono);font-size:10px;color:var(--muted-foreground)}.room-preview{display:flex;align-items:center;gap:5px;margin-top:3px;font-size:13px;color:var(--muted-foreground);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.unread-badge{background:var(--primary);color:var(--primary-foreground);font-family:var(--font-mono);font-size:9px;font-weight:700;padding:2px 5px}.fab{position:absolute;right:18px;bottom:18px;width:48px;height:48px;background:var(--primary);color:var(--primary-foreground);display:grid;place-items:center;z-index:20}.sidebar .fab{position:absolute}.ch-header{display:flex;align-items:center;gap:10px;padding:10px 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var(--border)}.msg-meta{display:flex;align-items:center;gap:4px;margin-top:4px;font-family:var(--font-mono);font-size:10px;color:var(--muted-foreground)}.voice-bubble{background:var(--terminal-bg);color:var(--terminal-fg);padding:12px 14px;width:280px;max-width:75%}.voice-top{display:flex;align-items:center;gap:10px}.voice-play{width:32px;height:32px;flex:none;border:1px solid rgba(237,232,224,.45);display:grid;place-items:center}.voice-wave{flex:1;display:flex;align-items:center;gap:2px;height:26px}.voice-wave span{width:2px;background:#ede8e08c}.voice-dur{font-family:var(--font-mono);font-size:12px;color:var(--terminal-fg)}.voice-link{margin-top:8px;font-family:var(--font-mono);font-size:10px;text-decoration:underline;color:var(--terminal-fg);opacity:.9}.composer{display:flex;align-items:center;gap:16px;padding:20px 18px;border-top:1px solid var(--border);border-bottom:1px solid var(--border);flex:none}.composer .placeholder{flex:1;font-size:16px;color:var(--muted-foreground)}.composer .typed{flex:1;font-size:16px;color:var(--foreground)}.composer .caret{display:inline-block;width:1.5px;height:18px;background:var(--foreground);vertical-align:-3px;margin-left:1px}.send-btn{width:38px;height:38px;background:var(--primary);color:var(--primary-foreground);display:grid;place-items:center;flex:none}.avatar{flex:none;display:grid;place-items:center;background:var(--secondary);border:1px solid var(--border);overflow:hidden;font-weight:600;color:var(--foreground)}.avatar img{width:100%;height:100%;object-fit:cover;display:block}.welcome{flex:1;display:grid;place-items:center}.welcome-inner{text-align:center;max-width:380px}.welcome-inner h2{font-size:24px;font-weight:700;margin:0 0 8px}.welcome-inner p{font-size:14px;color:var(--muted-foreground);margin:0;line-height:1.5}