*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-base: #0E1015;--bg-surface: #1C1E26;--bg-elevated: #252730;--bg-hover: #2E3140;--accent-cyan: #00E5FF;--accent-purple:#B958FF;--accent-green: #00FF9C;--text-primary: #E8EAF0;--text-secondary:#8B9BB4;--text-muted: #4A526A;--border: #2A2D3A;--danger: #FF4E6A;--online: #00FF9C;--offline: #4A526A;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--font-ui: "Inter", sans-serif;--font-display: "Space Grotesk", sans-serif}html,body,#root{height:100%;background:#0e1015;color:#e8eaf0;font-family:Inter,sans-serif;font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--bg-elevated);border-radius:2px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border:none;border-radius:var(--radius-md);font-family:var(--font-ui);font-size:14px;font-weight:500;cursor:pointer;transition:all .15s ease;text-decoration:none;white-space:nowrap}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--accent-cyan),var(--accent-purple));color:#0e1015;font-weight:600}.btn-primary:hover:not(:disabled){filter:brightness(1.1);transform:translateY(-1px)}.btn-ghost{background:var(--bg-elevated);color:var(--text-primary);border:1px solid var(--border)}.btn-ghost:hover:not(:disabled){background:var(--bg-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){filter:brightness(1.1)}.btn-sm{padding:6px 12px;font-size:12px}.btn-icon{padding:8px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:all .15s}.btn-icon:hover{background:var(--bg-hover);color:var(--text-primary)}.input{width:100%;padding:11px 14px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font-ui);font-size:14px;outline:none;transition:border-color .15s}.input::placeholder{color:var(--text-muted)}.input:focus{border-color:var(--accent-cyan)}.form-group{display:flex;flex-direction:column;gap:6px}.form-label{font-size:12px;font-weight:500;color:var(--text-secondary);letter-spacing:.05em;text-transform:uppercase}.form-error{font-size:12px;color:var(--danger)}.divider{display:flex;align-items:center;gap:12px;color:var(--text-muted);font-size:12px}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--border)}.status-dot{width:9px;height:9px;border-radius:50%;border:2px solid var(--bg-surface);flex-shrink:0}.status-dot.online{background:var(--online)}.status-dot.offline{background:var(--offline)}.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--accent-purple),var(--accent-cyan));display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;color:var(--bg-base);flex-shrink:0;position:relative}.avatar.lg{width:48px;height:48px;font-size:18px}.avatar.sm{width:32px;height:32px;font-size:12px}@keyframes spin{to{transform:rotate(360deg)}}.spinner{width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--accent-cyan);border-radius:50%;animation:spin .7s linear infinite}.badge{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--accent-purple);color:#fff;font-size:11px;font-weight:600;flex-shrink:0}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-base);background-image:radial-gradient(ellipse 80% 60% at 50% -20%,rgba(0,229,255,.07),transparent),radial-gradient(ellipse 50% 40% at 80% 80%,rgba(185,88,255,.06),transparent);padding:24px}.auth-card{width:100%;max-width:400px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px 36px;display:flex;flex-direction:column;gap:28px}.auth-logo{text-align:center}.logo-text{font-family:var(--font-display);font-size:28px;font-weight:700;color:var(--text-primary);letter-spacing:4px}.logo-text span{background:linear-gradient(90deg,var(--accent-cyan),var(--accent-purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.logo-sub{margin-top:6px;font-size:12px;color:var(--text-muted);letter-spacing:.1em;text-transform:uppercase}.auth-form{display:flex;flex-direction:column;gap:18px}.auth-footer{display:flex;align-items:center;justify-content:center;gap:8px;font-size:13px;color:var(--text-secondary);flex-wrap:wrap;text-align:center}.auth-link{color:var(--accent-cyan);text-decoration:none;font-weight:500}.auth-link:hover{text-decoration:underline}.divider-dot{color:var(--text-muted)}.otp-inputs{display:flex;gap:10px;justify-content:center}.otp-input{width:48px;height:56px;text-align:center;font-size:22px;font-weight:700;font-family:var(--font-display);background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--accent-purple);outline:none;transition:border-color .15s}.otp-input:focus{border-color:var(--accent-purple)}.chat-area{display:flex;flex-direction:column;height:100%;overflow:hidden}.chat-header{padding:14px 20px;border-bottom:1px solid var(--border);background:var(--bg-surface);display:flex;align-items:center;justify-content:space-between;flex-shrink:0}.messages-container{flex:1;overflow-y:auto;padding:20px 20px 8px;display:flex;flex-direction:column;gap:4px}.messages-loading,.messages-empty{flex:1;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:14px}.date-divider{display:flex;align-items:center;gap:12px;margin:16px 0 8px;color:var(--text-muted);font-size:11px;letter-spacing:.06em;text-transform:uppercase}.date-divider:before,.date-divider:after{content:"";flex:1;height:1px;background:var(--border)}.message-row{display:flex;align-items:flex-end;gap:8px;margin-bottom:2px}.message-row.mine{flex-direction:row-reverse}.message-bubble{max-width:65%;padding:9px 13px;border-radius:16px;display:flex;flex-direction:column;gap:3px;word-break:break-word}.message-bubble.mine{background:linear-gradient(135deg,#00e5ff2e,#b958ff2e);border:1px solid rgba(0,229,255,.2);border-bottom-right-radius:4px;align-items:flex-end}.message-bubble.theirs{background:var(--bg-surface);border:1px solid var(--border);border-bottom-left-radius:4px;align-items:flex-start}.message-text{font-size:14px;line-height:1.5;color:var(--text-primary);white-space:pre-wrap}.message-time{font-size:10px;color:var(--text-muted);flex-shrink:0}.chat-input-bar{padding:12px 16px;border-top:1px solid var(--border);background:var(--bg-surface);display:flex;align-items:flex-end;gap:10px;flex-shrink:0}.chat-textarea{flex:1;padding:10px 14px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:22px;color:var(--text-primary);font-family:var(--font-ui);font-size:14px;outline:none;resize:none;line-height:1.5;max-height:120px;overflow-y:auto;transition:border-color .15s}.chat-textarea::placeholder{color:var(--text-muted)}.chat-textarea:focus{border-color:#00e5ff66}.send-btn{width:40px;height:40px;border-radius:50%;background:var(--bg-elevated);border:1px solid var(--border);color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .15s}.send-btn.active{background:linear-gradient(135deg,var(--accent-cyan),var(--accent-purple));border-color:transparent;color:var(--bg-base)}.send-btn:disabled{cursor:not-allowed;opacity:.5}.send-btn.active:hover{filter:brightness(1.1);transform:scale(1.05)}.chat-search-bar{display:flex;align-items:center;gap:8px;padding:8px 16px;border-bottom:1px solid var(--border);background:var(--bg-elevated);flex-shrink:0}.chat-search-input{flex:1;background:transparent;border:none;outline:none;color:var(--text-primary);font-size:13px;font-family:var(--font-ui)}.chat-search-input::placeholder{color:var(--text-muted)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.3}}.btn-icon.active{background:#00e5ff1a;color:var(--accent-cyan)}.main-layout{display:flex;height:100vh;overflow:hidden}.sidebar{width:280px;flex-shrink:0;background:var(--bg-surface);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.sidebar-header{padding:16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:8px}.sidebar-tabs{display:flex;padding:10px 12px 0;gap:4px;border-bottom:1px solid var(--border)}.tab-btn{flex:1;padding:7px 4px;background:transparent;border:none;border-bottom:2px solid transparent;color:var(--text-muted);font-family:var(--font-ui);font-size:12px;font-weight:500;cursor:pointer;transition:all .15s;display:flex;align-items:center;justify-content:center;gap:5px;white-space:nowrap}.tab-btn:hover{color:var(--text-primary)}.tab-btn.active{color:var(--accent-cyan);border-bottom-color:var(--accent-cyan)}.sidebar-body{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:2px}.friend-row{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:var(--radius-md);background:transparent;border:none;width:100%;cursor:pointer;text-align:left;transition:background .1s;color:var(--text-primary)}.friend-row:hover{background:var(--bg-elevated)}.friend-row.active{background:var(--bg-hover)}.friend-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.friend-name{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.friend-status{font-size:11px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.search-result-row{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--radius-md);background:var(--bg-elevated);border:1px solid var(--border)}.empty-state{text-align:center;color:var(--text-muted);font-size:13px;padding:32px 16px;line-height:1.6}.chat-main{flex:1;overflow:hidden;display:flex;flex-direction:column;background:var(--bg-base)}.no-chat-placeholder{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--text-muted)}.placeholder-logo{font-family:var(--font-display);font-size:36px;font-weight:700;letter-spacing:4px;color:var(--text-primary);opacity:.15}.placeholder-logo span{background:linear-gradient(90deg,var(--accent-cyan),var(--accent-purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.no-chat-placeholder p{font-size:14px}.call-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0e1015d9;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000}.call-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 40px;text-align:center;min-width:280px;animation:call-pulse 1.5s ease-in-out infinite}@keyframes call-pulse{0%,to{box-shadow:0 0 #00e5ff33}50%{box-shadow:0 0 0 12px #00e5ff00}}