:root{--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-display: "Outfit", sans-serif;--bg-primary: #0b0e11;--bg-secondary: #11151a;--bg-tertiary: #161c22;--bg-accent: #0f1317;--border-subtle: #202832;--border-focus: #0dbe8c;--text-main: #f2f5f8;--text-muted: #8c9ba5;--text-dark: #4a5764;--brand-color: #0dbe8c;--brand-glow: rgba(13, 190, 140, .15);--brand-hover: #0bb182;--danger-color: #f35325;--danger-hover: #d94218;--glass-bg: rgba(17, 21, 26, .7);--glass-border: rgba(255, 255, 255, .03);--shadow-lg: 0 10px 30px rgba(0, 0, 0, .5);--transition-fast: .15s ease;--transition-normal: .25s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-main);overflow:hidden;height:100vh;width:100vw;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--bg-tertiary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-dark)}.auth-container{display:flex;justify-content:center;align-items:center;height:100vh;width:100vw;background:radial-gradient(circle at top right,rgba(13,190,140,.08),transparent 45%),radial-gradient(circle at bottom left,rgba(0,164,239,.05),transparent 45%),var(--bg-primary)}.auth-card{width:420px;padding:40px;background:var(--glass-bg);border:1px solid var(--glass-border);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:20px;box-shadow:var(--shadow-lg);display:flex;flex-direction:column;align-items:center;text-align:center;position:relative;overflow:hidden}.auth-logo-section{position:relative;margin-bottom:12px}.auth-logo-glow{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:80px;height:80px;background:var(--brand-color);filter:blur(40px);opacity:.3;z-index:0}.auth-logo-text{font-family:var(--font-display);font-size:2.2rem;font-weight:800;letter-spacing:-.03em;background:linear-gradient(135deg,#fff 30%,#a2b0be);-webkit-background-clip:text;-webkit-text-fill-color:transparent;z-index:1;position:relative}.auth-subtitle{color:var(--text-muted);font-size:.95rem;line-height:1.5;margin-bottom:40px}.auth-actions{width:100%;margin-bottom:30px;z-index:1}.auth-btn-sso{width:100%;padding:14px 20px;background-color:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:12px;color:var(--text-main);font-family:var(--font-sans);font-size:.95rem;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:12px;transition:all var(--transition-fast)}.auth-btn-sso:hover{background-color:var(--border-subtle);border-color:var(--text-muted);box-shadow:0 4px 12px #0003}.auth-btn-sso:active{transform:scale(.98)}.sso-icon{width:18px;height:18px}.auth-footer{color:var(--text-dark);font-size:.75rem;font-weight:500;letter-spacing:.05em;text-transform:uppercase}.spinner-small{width:18px;height:18px;border:2px solid rgba(255,255,255,.1);border-top-color:var(--text-main);border-radius:50%;animation:spin .8s linear infinite}.spinner-large{width:48px;height:48px;border:3px solid rgba(13,190,140,.1);border-top-color:var(--brand-color);border-radius:50%;animation:spin 1s cubic-bezier(.4,0,.2,1) infinite;margin-bottom:24px}@keyframes spin{to{transform:rotate(360deg)}}.auth-loading-section,.auth-error-section{display:flex;flex-direction:column;align-items:center;padding:20px 0}.auth-loading-section h2,.auth-error-section h2{font-family:var(--font-display);font-size:1.4rem;margin-bottom:8px}.auth-loading-section p,.auth-error-section p{color:var(--text-muted);font-size:.9rem}.error-icon{font-size:3rem;margin-bottom:16px}.auth-btn-retry{margin-top:24px;padding:10px 20px;background-color:var(--brand-color);color:var(--bg-primary);border:none;border-radius:8px;font-weight:600;cursor:pointer;transition:background-color var(--transition-fast)}.auth-btn-retry:hover{background-color:var(--brand-hover)}.app-shell{display:grid;grid-template-columns:280px 1fr;height:100vh;width:100vw;background-color:var(--bg-primary)}.sidebar{background-color:var(--bg-secondary);border-right:1px solid var(--border-subtle);display:flex;flex-direction:column;height:100vh}.sidebar-header{padding:20px;border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between}.brand-title{font-family:var(--font-display);font-weight:800;font-size:1.3rem;letter-spacing:-.02em;background:linear-gradient(135deg,#ffffff 40%,var(--text-muted) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.user-profile{display:flex;align-items:center;gap:12px;padding:16px 20px;border-top:1px solid var(--border-subtle);background-color:var(--bg-accent)}.user-details{display:flex;flex-direction:column;min-width:0;flex:1}.user-name{font-size:.85rem;font-weight:600;color:var(--text-main);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.btn-logout{background:transparent;border:none;color:var(--text-muted);cursor:pointer;padding:4px;border-radius:4px;transition:all var(--transition-fast)}.btn-logout:hover{color:var(--danger-color);background-color:#f353250d}.room-list-container{flex:1;overflow-y:auto;padding:12px 8px;display:flex;flex-direction:column;gap:4px}.search-box{padding:12px;display:flex;position:relative}.search-input{width:100%;padding:8px 12px;background-color:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:8px;color:var(--text-main);font-size:.85rem;outline:none;transition:border-color var(--transition-fast)}.search-input:focus{border-color:var(--brand-color)}.room-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:10px;cursor:pointer;transition:background-color var(--transition-fast);text-decoration:none;color:inherit}.room-item:hover{background-color:var(--bg-tertiary)}.room-item.active{background-color:#0dbe8c14;border-left:2px solid var(--brand-color);border-top-left-radius:0;border-bottom-left-radius:0}.room-info{flex:1;min-width:0}.room-name-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:2px}.room-name-text{font-size:.9rem;font-weight:500;color:var(--text-main);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.room-item.unread .room-name-text{font-weight:700}.room-time{font-size:.75rem;color:var(--text-muted)}.room-preview-row{display:flex;justify-content:space-between;align-items:center}.room-preview-text{font-size:.8rem;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.unread-badge{background-color:var(--brand-color);color:var(--bg-primary);font-size:.7rem;font-weight:700;min-width:18px;height:18px;border-radius:9px;display:flex;align-items:center;justify-content:center;padding:0 4px}.chat-area{display:flex;flex-direction:column;height:100vh;background-color:var(--bg-primary);position:relative}.chat-header{height:68px;padding:0 24px;border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between;background-color:var(--bg-secondary)}.chat-title-info{display:flex;align-items:center;gap:12px;min-width:0}.chat-name{font-family:var(--font-display);font-weight:700;font-size:1.1rem}.chat-encrypted-icon{color:var(--brand-color);display:flex;align-items:center}.chat-actions{display:flex;gap:8px}.btn-icon-call{background-color:var(--bg-tertiary);border:1px solid var(--border-subtle);color:var(--text-main);width:40px;height:40px;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.btn-icon-call:hover{background-color:var(--border-subtle);border-color:var(--brand-color);color:var(--brand-color)}.timeline-container{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:16px}.message-bubble-wrapper{display:flex;gap:12px;max-width:80%}.message-bubble-wrapper.outgoing{align-self:flex-end;flex-direction:row-reverse}.message-avatar{flex-shrink:0}.message-bubble{background-color:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:12px;padding:10px 14px;display:flex;flex-direction:column;min-width:80px;position:relative}.message-bubble-wrapper.outgoing .message-bubble{background-color:#0dbe8c14;border-color:#0dbe8c26}.message-sender{font-size:.8rem;font-weight:600;color:var(--brand-color);margin-bottom:4px}.message-body{font-size:.92rem;line-height:1.45;color:var(--text-main);word-break:break-word}.message-meta{display:flex;align-items:center;justify-content:flex-end;gap:6px;margin-top:4px;align-self:flex-end}.message-time{font-size:.7rem;color:var(--text-muted)}.composer-container{padding:20px 24px;border-top:1px solid var(--border-subtle);background-color:var(--bg-secondary)}.composer-form{display:flex;gap:12px;align-items:flex-end;background-color:var(--bg-primary);border:1px solid var(--border-subtle);border-radius:12px;padding:8px 12px;transition:border-color var(--transition-fast)}.composer-form:focus-within{border-color:var(--brand-color)}.composer-input{flex:1;background:transparent;border:none;outline:none;color:var(--text-main);font-family:var(--font-sans);font-size:.9rem;min-height:24px;max-height:120px;resize:none;padding:4px 0}.btn-composer-action{background:transparent;border:none;color:var(--text-muted);cursor:pointer;padding:6px;border-radius:6px;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.btn-composer-action:hover{color:var(--brand-color);background-color:var(--bg-secondary)}.typing-bar{height:18px;font-size:.78rem;color:var(--text-muted);padding:0 4px;margin-bottom:6px}.call-overlay{position:absolute;top:68px;left:0;width:100%;height:calc(100vh - 68px);background-color:#0b151af2;display:flex;flex-direction:column;z-index:100}.call-grid{flex:1;display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;padding:24px;overflow-y:auto}.video-tile{background-color:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:16px;position:relative;overflow:hidden;aspect-ratio:16/9}.video-element{width:100%;height:100%;object-fit:cover}.tile-overlay{position:absolute;bottom:12px;left:12px;background-color:#0009;padding:4px 10px;border-radius:6px;font-size:.8rem;color:var(--text-main);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.call-controls{height:80px;border-top:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:center;gap:16px;background-color:var(--bg-secondary)}.btn-call-control{width:48px;height:48px;border-radius:50%;border:none;background-color:var(--bg-tertiary);color:var(--text-main);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.btn-call-control:hover{background-color:var(--border-subtle)}.btn-call-control.active{background-color:var(--brand-color);color:var(--bg-primary)}.btn-call-control.hangup{background-color:var(--danger-color)}.btn-call-control.hangup:hover{background-color:var(--danger-hover)}.avatar-circle{width:40px;height:40px;border-radius:50%;background-color:var(--bg-tertiary);display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:700;color:var(--brand-color);font-size:1.1rem;overflow:hidden;border:1px solid var(--border-subtle)}.avatar-image{width:100%;height:100%;object-fit:cover}.no-room-selected{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-muted);gap:16px}.no-room-icon{font-size:4rem;opacity:.2}.no-room-text{font-family:var(--font-display);font-size:1.2rem;font-weight:600}