:root{--bg-color: #0f172a;--text-primary: #f8fafc;--text-secondary: #94a3b8;--accent-color: #3b82f6;--accent-hover: #2563eb;--glass-bg: rgba(30, 41, 59, .7);--glass-border: rgba(255, 255, 255, .1);--glass-shadow: 0 4px 30px rgba(0, 0, 0, .1);--danger-color: #ef4444}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);background-image:radial-gradient(at 0% 0%,hsla(253,16%,7%,1) 0,transparent 50%),radial-gradient(at 50% 0%,hsla(225,39%,30%,1) 0,transparent 50%),radial-gradient(at 100% 0%,hsla(339,49%,30%,1) 0,transparent 50%);background-attachment:fixed;color:var(--text-primary);display:flex;justify-content:center;align-items:center;min-height:100vh;margin:0}#root{width:100%;height:100vh;display:flex;flex-direction:column}.glass-panel{background:var(--glass-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--glass-border);box-shadow:var(--glass-shadow);border-radius:16px}.input-field{width:100%;padding:12px 16px;background:#0f172a99;border:1px solid var(--glass-border);border-radius:8px;color:var(--text-primary);font-size:1rem;transition:all .3s ease;outline:none}.input-field:focus{border-color:var(--accent-color);box-shadow:0 0 0 2px #3b82f64d}.input-label{display:block;margin-bottom:6px;font-size:.875rem;color:var(--text-secondary);font-weight:500}.btn{padding:12px 24px;border-radius:8px;border:none;font-weight:600;font-size:1rem;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:var(--accent-color);color:#fff}.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .4s ease-out forwards}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#fff3;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#ffffff4d}.registration-container{display:flex;justify-content:center;align-items:center;width:100%;padding:20px}.registration-card{max-width:500px;width:100%;padding:40px}.registration-header{text-align:center;margin-bottom:30px}.icon-wrapper{width:64px;height:64px;border-radius:50%;background:#3b82f61a;display:flex;justify-content:center;align-items:center;margin:0 auto 16px;border:1px solid var(--glass-border)}.registration-header h1{font-size:2rem;margin-bottom:8px;font-weight:700;letter-spacing:-.02em}.registration-header p{color:var(--text-secondary);font-size:.95rem}.registration-form{display:flex;flex-direction:column;gap:20px}.form-group{display:flex;flex-direction:column}.form-row{display:flex;gap:16px}.form-group.half{flex:1}select.input-field{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:16px;padding-right:40px}select.input-field option{background:var(--bg-color);color:var(--text-primary)}.submit-btn{width:100%;margin-top:10px;padding:14px;font-size:1.05rem}.submit-btn:disabled{opacity:.7;cursor:not-allowed}.error-message{background:#ef44441a;border:1px solid var(--danger-color);color:#fca5a5;padding:12px;border-radius:8px;margin-bottom:20px;font-size:.9rem;text-align:center}.auth-toggle{text-align:center;margin-top:24px;font-size:.9rem;color:var(--text-secondary)}.toggle-link{background:transparent;border:none;color:var(--accent-color);font-weight:600;cursor:pointer;padding:0;font-size:.9rem}.toggle-link:hover{text-decoration:underline}.chat-container{display:flex;justify-content:center;align-items:center;width:100%;height:100vh;padding:20px}.chat-layout{display:flex;width:100%;max-width:1000px;height:100%;max-height:800px;overflow:hidden;padding:0;position:relative}.chat-main{flex:1;display:flex;flex-direction:column;background:#0f172a33}.chat-header{padding:16px 24px;display:flex;justify-content:space-between;align-items:center;border-radius:0;border-left:none;border-right:none;border-top:none}.menu-toggle-btn{background:transparent;border:none;color:var(--text-primary);cursor:pointer;padding:4px;border-radius:6px;display:flex;align-items:center;justify-content:center;transition:background .2s}.menu-toggle-btn:hover{background:#ffffff1a}.chat-header h3{font-size:1.2rem;font-weight:600;margin:0}.online-badge{background:#10b98133;color:#10b981;padding:4px 10px;border-radius:12px;font-size:.75rem;font-weight:600;border:1px solid rgba(16,185,129,.3)}.drawer-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#0006;z-index:9;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);animation:fadeIn .2s ease-out}.side-drawer{position:absolute;top:0;left:-320px;width:300px;height:100%;background:#0f172af2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-right:1px solid var(--glass-border);transition:left .3s ease;z-index:10;display:flex;flex-direction:column}.side-drawer.open{left:0}.drawer-profile{padding:30px 20px;border-bottom:1px solid var(--glass-border);display:flex;align-items:center;gap:15px}.profile-avatar-small{width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;display:flex;justify-content:center;align-items:center;font-size:1.5rem;font-weight:700}.drawer-menu-items{padding:20px 10px;display:flex;flex-direction:column;gap:8px}.menu-item{display:flex;align-items:center;gap:12px;padding:12px 16px;background:transparent;border:none;color:var(--text-primary);font-size:1rem;text-align:left;border-radius:8px;cursor:pointer;transition:background .2s}.menu-item:hover{background:#ffffff1a}.text-danger{color:var(--danger-color)}.text-danger:hover{background:#ef44441a}.divider{height:1px;background:var(--glass-border);margin:10px 0}.messages-area{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:16px}.system-message{text-align:center;margin:10px 0}.system-message span{background:#ffffff0d;padding:6px 16px;border-radius:16px;font-size:.8rem;color:var(--text-secondary)}.message-wrapper{display:flex;gap:12px;max-width:80%;animation:fadeIn .3s ease-out}.message-wrapper.is-me{align-self:flex-end;flex-direction:row-reverse}.message-avatar{width:36px;height:36px;border-radius:50%;background:#ffffff1a;display:flex;justify-content:center;align-items:center;font-weight:700;font-size:.9rem;flex-shrink:0}.message-bubble{padding:12px 16px;border-radius:16px;position:relative}.their-message{background:#1e293bcc;border:1px solid var(--glass-border);border-top-left-radius:4px}.my-message{background:var(--accent-color);color:#fff;border-top-right-radius:4px}.message-sender{font-size:.8rem;font-weight:600;color:var(--text-primary);margin-bottom:4px;display:flex;align-items:center;gap:6px}.sender-meta{font-weight:400;color:var(--text-secondary);font-size:.75rem}.inline-block-btn{background:transparent;border:none;color:var(--text-secondary);cursor:pointer;opacity:.5;margin-left:auto;padding:2px;border-radius:4px}.inline-block-btn:hover{opacity:1;color:var(--danger-color);background:#ef44441a}.message-text{font-size:.95rem;line-height:1.4;word-break:break-word}.message-time{font-size:.7rem;text-align:right;margin-top:6px;opacity:.7}.chat-input-form{margin:20px;padding:8px 16px;display:flex;align-items:center;gap:12px;border-radius:24px}.chat-input{flex:1;background:transparent;border:none;color:var(--text-primary);font-size:1rem;padding:8px 0;outline:none}.chat-input::placeholder{color:var(--text-secondary)}.send-btn{width:40px;height:40px;padding:0;border-radius:50%;background:var(--accent-color);flex-shrink:0}.send-btn:disabled{background:#ffffff1a;color:var(--text-secondary);cursor:not-allowed}.modal-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:50;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-content{width:90%;max-width:400px;padding:24px;animation:fadeIn .2s ease-out}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.modal-header h2{font-size:1.25rem;margin:0}.close-btn{background:transparent;border:none;color:var(--text-secondary);cursor:pointer;padding:4px}.close-btn:hover{color:#fff}.modal-form{display:flex;flex-direction:column;gap:10px}.user-list{display:flex;flex-direction:column;gap:12px;max-height:300px;overflow-y:auto}.user-list-item{display:flex;justify-content:space-between;align-items:center;padding:10px;background:#ffffff0d;border-radius:8px}@media (max-width: 768px){.chat-layout{max-height:100vh;border-radius:0}.chat-container{padding:0}}