@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg-primary:#0a0a0f;--bg-secondary:#12121a;--bg-tertiary:#1a1a2e;--bg-hover:#22223a;--bg-active:#2a2a45;--accent:#6c5ce7;--accent-hover:#7e6ff0;--accent-light:#6c5ce726;--accent-glow:#6c5ce74d;--text-primary:#e8e8f0;--text-secondary:#9494b8;--text-muted:#5a5a7a;--border:#2a2a40;--border-light:#3a3a55;--success:#00d68f;--error:#ff4757;--warning:#ffa502;--sidebar-width:340px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-full:9999px;--transition:all .2s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.6}.auth-page{background:radial-gradient(ellipse at 20% 50%, #6c5ce714 0%, transparent 50%), radial-gradient(ellipse at 80% 50%, #00d68f0d 0%, transparent 50%), var(--bg-primary);justify-content:center;align-items:center;min-height:100vh;display:flex}.auth-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);width:100%;max-width:420px;padding:40px;box-shadow:0 20px 60px #0006}.auth-card h1{background:linear-gradient(135deg, var(--text-primary), var(--accent));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:6px;font-size:28px;font-weight:700}.auth-card .subtitle{color:var(--text-secondary);margin-bottom:32px;font-size:14px}.form-group{margin-bottom:20px}.form-group label{color:var(--text-secondary);margin-bottom:6px;font-size:13px;font-weight:500;display:block}.form-group input{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--text-primary);transition:var(--transition);outline:none;padding:12px 16px;font-family:Inter,sans-serif;font-size:14px}.form-group input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.form-group input::placeholder{color:var(--text-muted)}.btn{border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);border:none;outline:none;justify-content:center;align-items:center;gap:8px;padding:12px 24px;font-family:Inter,sans-serif;font-size:14px;font-weight:600;display:inline-flex}.btn-primary{background:var(--accent);color:#fff;width:100%}.btn-primary:hover{background:var(--accent-hover);box-shadow:0 4px 20px var(--accent-glow);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-hover);border-color:var(--border-light)}.btn-small{padding:6px 14px;font-size:12px}.btn-icon{border-radius:var(--radius-sm);background:var(--bg-tertiary);width:36px;height:36px;color:var(--text-secondary);border:1px solid var(--border);cursor:pointer;transition:var(--transition);justify-content:center;align-items:center;padding:0;display:inline-flex}.btn-icon:hover{background:var(--bg-hover);color:var(--text-primary)}.auth-switch{text-align:center;color:var(--text-secondary);margin-top:24px;font-size:13px}.auth-switch a{color:var(--accent);cursor:pointer;font-weight:500;text-decoration:none}.auth-switch a:hover{text-decoration:underline}.error-message{color:var(--error);border-radius:var(--radius-sm);background:#ff47571a;border:1px solid #ff47574d;margin-bottom:16px;padding:10px 14px;font-size:13px}.chat-app{height:100vh;display:flex;overflow:hidden}.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;display:flex}.sidebar-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:20px;display:flex}.sidebar-header h2{background:linear-gradient(135deg, var(--text-primary), var(--accent));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:20px;font-weight:700}.sidebar-header-actions{gap:8px;display:flex}.conversation-list{flex:1;padding:8px;overflow-y:auto}.conversation-list::-webkit-scrollbar{width:4px}.conversation-list::-webkit-scrollbar-track{background:0 0}.conversation-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:var(--radius-full)}.conversation-item{border-radius:var(--radius-md);cursor:pointer;transition:var(--transition);border:1px solid #0000;align-items:center;gap:12px;padding:12px 14px;display:flex}.conversation-item:hover{background:var(--bg-hover)}.conversation-item.active{background:var(--accent-light);border-color:#6c5ce733}.conversation-avatar{border-radius:var(--radius-full);background:linear-gradient(135deg, var(--accent), #a29bfe);color:#fff;flex-shrink:0;justify-content:center;align-items:center;width:44px;height:44px;font-size:16px;font-weight:700;display:flex}.conversation-info{flex:1;min-width:0}.conversation-name{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;font-size:14px;font-weight:600;overflow:hidden}.conversation-preview{color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;margin-top:2px;font-size:12px;overflow:hidden}.conversation-time{color:var(--text-muted);flex-shrink:0;font-size:11px}.sidebar-user{border-top:1px solid var(--border);align-items:center;gap:12px;padding:16px 20px;display:flex}.sidebar-user .user-avatar{border-radius:var(--radius-full);color:#fff;background:linear-gradient(135deg,#00d68f,#00b894);flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:14px;font-weight:700;display:flex}.sidebar-user .user-info{flex:1;min-width:0}.sidebar-user .user-name{font-size:13px;font-weight:600}.sidebar-user .user-email{color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;font-size:11px;overflow:hidden}.sidebar-user .btn-logout{color:var(--error);border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);background:#ff47571a;border:1px solid #ff475733;padding:6px 12px;font-family:Inter,sans-serif;font-size:11px;font-weight:500}.sidebar-user .btn-logout:hover{background:#ff475733}.chat-area{background:var(--bg-primary);flex-direction:column;flex:1;display:flex}.chat-header{border-bottom:1px solid var(--border);background:var(--bg-secondary);justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.chat-header-info{align-items:center;gap:12px;display:flex}.chat-header-info h3{font-size:16px;font-weight:600}.chat-header-info .chat-type{color:var(--text-muted);background:var(--bg-tertiary);border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.5px;padding:2px 8px;font-size:11px}.chat-messages{flex-direction:column;flex:1;gap:4px;padding:20px 24px;display:flex;overflow-y:auto}.chat-messages::-webkit-scrollbar{width:6px}.chat-messages::-webkit-scrollbar-track{background:0 0}.chat-messages::-webkit-scrollbar-thumb{background:var(--border);border-radius:var(--radius-full)}.message{border-radius:var(--radius-md);max-width:65%;padding:10px 16px;font-size:14px;line-height:1.5;animation:.25s cubic-bezier(.4,0,.2,1) messageIn}@keyframes messageIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.message.sent{background:var(--accent);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.message.received{background:var(--bg-tertiary);border:1px solid var(--border);border-bottom-left-radius:4px;align-self:flex-start}.message .message-sender{color:var(--accent-hover);margin-bottom:2px;font-size:11px;font-weight:600}.message.sent .message-sender{color:#ffffffb3}.message .message-time{color:var(--text-muted);text-align:right;margin-top:4px;font-size:10px}.message.sent .message-time{color:#ffffff80}.chat-input-area{border-top:1px solid var(--border);background:var(--bg-secondary);padding:16px 24px}.chat-input-wrapper{align-items:flex-end;gap:12px;display:flex}.chat-input-wrapper input{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);transition:var(--transition);outline:none;flex:1;padding:14px 18px;font-family:Inter,sans-serif;font-size:14px}.chat-input-wrapper input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.chat-input-wrapper input::placeholder{color:var(--text-muted)}.btn-send{border-radius:var(--radius-md);background:var(--accent);color:#fff;cursor:pointer;width:48px;height:48px;transition:var(--transition);border:none;flex-shrink:0;justify-content:center;align-items:center;display:flex}.btn-send:hover{background:var(--accent-hover);box-shadow:0 4px 16px var(--accent-glow);transform:translateY(-1px)}.btn-send:active{transform:translateY(0)}.btn-send svg{width:20px;height:20px}.empty-state{color:var(--text-muted);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:16px;display:flex}.empty-state-icon{border-radius:var(--radius-full);background:var(--bg-secondary);border:1px solid var(--border);justify-content:center;align-items:center;width:80px;height:80px;font-size:36px;display:flex}.empty-state h3{color:var(--text-secondary);font-size:18px;font-weight:600}.empty-state p{text-align:center;max-width:280px;font-size:13px}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;background:#0009;justify-content:center;align-items:center;animation:.15s fadeIn;display:flex;position:fixed;inset:0}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);width:100%;max-width:400px;padding:28px;animation:.2s cubic-bezier(.4,0,.2,1) slideIn;box-shadow:0 20px 60px #00000080}@keyframes slideIn{0%{opacity:0;transform:scale(.95)translateY(10px)}to{opacity:1;transform:scale(1)translateY(0)}}.modal h3{margin-bottom:20px;font-size:18px;font-weight:700}.modal .modal-actions{justify-content:flex-end;gap:10px;margin-top:24px;display:flex}.spinner{border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:20px;height:20px;animation:.6s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading-page{justify-content:center;align-items:center;height:100vh;display:flex}