:root{color-scheme:dark;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.34;--sidebar-width: 360px;--bg-primary: #1a1a2e;--bg-secondary: #16213e;--bg-chat: #0f0f23;--bg-input: #1a1a2e;--bg-hover: rgba(255, 255, 255, .06);--bg-active: rgba(99, 102, 241, .15);--text-primary: #e8e8ed;--text-secondary: #8a8a9a;--bubble-mine: #6366f1;--bubble-them: #2a2a3e;--accent: #6366f1;--accent-hover: #818cf8;--border: rgba(255, 255, 255, .08);--radius: 18px;--radius-sm: 12px}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;overflow:hidden;background:var(--bg-primary);color:var(--text-primary)}.messenger{display:flex;height:100vh;height:100dvh}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--bg-primary);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:16px 16px 8px}.sidebar-header h2{font-size:1.5rem;font-weight:700;letter-spacing:-.02em}.sidebar-actions{display:flex;gap:4px}.search-wrapper{position:relative;padding:4px 16px 12px}.search-icon{position:absolute;left:28px;top:50%;transform:translateY(calc(-50% - 4px));color:var(--text-secondary);pointer-events:none}.search-input{width:100%;background:var(--bg-hover);border:none;border-radius:20px;padding:8px 12px 8px 36px;font-size:.875rem;color:var(--text-primary);outline:none;font-family:inherit}.search-input::placeholder{color:var(--text-secondary)}.search-input:focus{background:#ffffff1a;box-shadow:0 0 0 2px var(--accent)}.conversation-list{flex:1;overflow-y:auto;padding:0 8px}.conversation-list::-webkit-scrollbar{width:6px}.conversation-list::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:3px}.conversation-item{display:flex;align-items:center;gap:12px;width:100%;padding:8px;border:none;background:transparent;color:inherit;cursor:pointer;border-radius:var(--radius-sm);font-family:inherit;text-align:left;transition:background 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var(--border);flex-shrink:0}.chat-header-info{flex:1;min-width:0}.chat-header-name{display:block;font-size:.9375rem;font-weight:600}.chat-header-status{display:block;font-size:.75rem;color:var(--text-secondary)}.chat-header-actions{display:flex;gap:4px}.back-btn{display:none}.messages-container{flex:1;overflow:hidden;position:relative}.messages-scroll{height:100%;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:2px}.messages-scroll::-webkit-scrollbar{width:6px}.messages-scroll::-webkit-scrollbar-thumb{background:#ffffff1f;border-radius:3px}.message-row{display:flex;align-items:flex-end;gap:6px;max-width:65%}.message-row.me{align-self:flex-end}.message-row.them{align-self:flex-start}.message-bubble{padding:8px 12px;font-size:.9375rem;line-height:1.36;word-break:break-word;position:relative}.message-bubble.me{background:var(--bubble-mine);color:#fff;border-radius:var(--radius) var(--radius) 4px var(--radius)}.message-bubble.me.last{border-radius:var(--radius) 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