:root{--primary: #0066cc;--primary-dark: #0052a3;--success: #2ecc71;--error: #e74c3c;--bg-primary: #ffffff;--bg-secondary: #f5f5f5;--text-primary: #1a1a1a;--text-secondary: #666666;--border: #e0e0e0;--shadow: 0 2px 8px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica Neue,sans-serif;color:var(--text-primary);background-color:var(--bg-primary);line-height:1.5}.app{display:flex;flex-direction:column;height:100vh;background-color:var(--bg-primary)}.navbar{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background:var(--bg-primary);border-bottom:1px solid var(--border);box-shadow:var(--shadow)}.navbar-brand h1{font-size:1.5rem;font-weight:600;color:var(--primary)}.navbar-menu{display:flex;gap:2rem;align-items:center}.nav-btn{background:none;border:none;padding:.5rem 1rem;font-size:1rem;color:var(--text-secondary);cursor:pointer;border-radius:4px;transition:all .2s ease}.nav-btn:hover{color:var(--primary);background-color:var(--bg-secondary)}.nav-btn.active{color:var(--primary);font-weight:600}.user-info{display:flex;gap:1rem;align-items:center;padding-left:2rem;border-left:1px solid var(--border)}.user-info span{font-size:.9rem;color:var(--text-secondary)}.logout-btn{padding:.5rem 1rem;background-color:var(--error);color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:.9rem;transition:background-color .2s ease}.logout-btn:hover{background-color:#c0392b}.main-content{flex:1;overflow-y:auto;padding:2rem}.auth-container{display:flex;justify-content:center;align-items:center;height:100vh;background:linear-gradient(135deg,var(--bg-secondary) 0%,var(--bg-primary) 100%)}.auth-card{background:var(--bg-primary);padding:2.5rem;border-radius:8px;box-shadow:var(--shadow-lg);width:100%;max-width:400px}.auth-card h1{font-size:2rem;color:var(--primary);margin-bottom:.5rem;text-align:center}.auth-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:2rem;font-size:.9rem}.auth-form{display:flex;flex-direction:column;gap:1.5rem;margin-bottom:1.5rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{font-weight:500;font-size:.9rem;color:var(--text-primary)}.form-group input{padding:.75rem;border:1px solid var(--border);border-radius:4px;font-size:1rem;transition:border-color .2s ease}.form-group input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #0066cc1a}.error-msg{padding:.75rem;background-color:#ffe0e0;color:var(--error);border-radius:4px;font-size:.9rem}.auth-btn{padding:.75rem;background-color:var(--primary);color:#fff;border:none;border-radius:4px;font-size:1rem;font-weight:600;cursor:pointer;transition:background-color .2s ease}.auth-btn:hover{background-color:var(--primary-dark)}.auth-btn:disabled{opacity:.7;cursor:not-allowed}.auth-toggle{text-align:center;font-size:.9rem;color:var(--text-secondary)}.link-btn{background:none;border:none;color:var(--primary);cursor:pointer;text-decoration:underline;font-weight:500}.link-btn:hover{color:var(--primary-dark)}.video-chat-container{width:100%;height:100%}.call-view{display:flex;flex-direction:column;gap:1.5rem;padding:1rem 2rem}.video-container{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.video-wrapper{position:relative;background:#000;border-radius:10px;overflow:hidden;box-shadow:var(--shadow-lg);aspect-ratio:16 / 9;width:100%}.video-wrapper video{width:100%;height:100%;object-fit:cover}.fullscreen-btn{position:absolute;top:.5rem;right:.5rem;background:#0000008c;color:#fff;border:none;width:36px;height:36px;border-radius:6px;cursor:pointer;font-size:1.1rem;line-height:1;display:flex;align-items:center;justify-content:center;transition:background .15s ease}.fullscreen-btn:hover{background:#000000d9}.video-wrapper.remote.is-fs{position:fixed;top:0;right:0;bottom:0;left:0;width:100vw;height:100vh;aspect-ratio:auto;border-radius:0;z-index:9999;background:#000}.video-wrapper.remote.is-fs>video:not(.pip-self){object-fit:contain}.video-wrapper.remote video.pip-self{display:none}.video-wrapper.remote.is-fs video.pip-self{display:block!important;position:absolute;bottom:1.25rem;right:1.25rem;width:22%;max-width:280px;min-width:140px;aspect-ratio:16 / 9;height:auto!important;border-radius:8px;border:2px solid rgba(255,255,255,.55);box-shadow:0 4px 16px #00000080;object-fit:cover;z-index:10;background:#000}@media (max-width: 768px){.video-container{grid-template-columns:1fr}}.video-label{position:absolute;bottom:1rem;left:1rem;background:#000000b3;color:#fff;padding:.5rem 1rem;border-radius:4px;font-size:.9rem}.call-controls{display:flex;justify-content:center;gap:1rem;padding:1.5rem}.end-call-btn{padding:.75rem 2rem;background-color:var(--error);color:#fff;border:none;border-radius:4px;font-size:1rem;font-weight:600;cursor:pointer;transition:background-color .2s ease}.end-call-btn:hover{background-color:#c0392b}.incoming-call-modal{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.incoming-call-card{background:var(--bg-primary);padding:2rem;border-radius:8px;box-shadow:var(--shadow-lg);text-align:center;max-width:400px;animation:slideUp .3s ease}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.incoming-call-card h2{margin-bottom:1rem;color:var(--primary)}.incoming-call-card p{margin-bottom:2rem;color:var(--text-secondary)}.call-actions{display:flex;gap:1rem;justify-content:center}.accept-btn,.reject-btn{padding:.75rem 2rem;border:none;border-radius:4px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease}.accept-btn{background-color:var(--success);color:#fff}.accept-btn:hover{background-color:#27ae60}.reject-btn{background-color:var(--error);color:#fff}.reject-btn:hover{background-color:#c0392b}.users-view{display:flex;flex-direction:column;gap:2rem}.users-view h2{font-size:1.5rem;color:var(--text-primary)}.empty-state{text-align:center;padding:3rem;color:var(--text-secondary);font-size:1.1rem}.users-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1.5rem}.user-card{background:var(--bg-secondary);padding:1.5rem;border-radius:8px;text-align:center;transition:all .2s ease;border:1px solid var(--border)}.user-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.user-name{font-size:1.1rem;font-weight:600;margin-bottom:.5rem}.user-status{color:var(--success);font-size:.9rem;margin-bottom:1rem}.call-btn{width:100%;padding:.75rem;background-color:var(--primary);color:#fff;border:none;border-radius:4px;font-weight:600;cursor:pointer;transition:background-color .2s ease}.call-btn:hover{background-color:var(--primary-dark)}.local-video-preview{margin-top:2rem;padding:1.5rem;background:var(--bg-secondary);border-radius:8px;border:1px solid var(--border)}.local-video-preview h3{margin-bottom:1rem;color:var(--text-primary)}.local-video-preview video{width:100%;max-width:400px;border-radius:4px;background:#000}.admin-container{width:100%}.admin-panel{max-width:1000px}.admin-panel h2{font-size:1.8rem;margin-bottom:2rem;color:var(--text-primary)}.admin-section{margin-bottom:3rem;padding:2rem;background:var(--bg-secondary);border-radius:8px;border:1px solid var(--border)}.admin-section h3{font-size:1.3rem;margin-bottom:1.5rem;color:var(--text-primary)}.admin-form{display:flex;flex-direction:column;gap:1rem;margin-bottom:1rem}.admin-form input{padding:.75rem;border:1px solid var(--border);border-radius:4px;font-size:1rem}.admin-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #0066cc1a}.admin-form button{padding:.75rem;background-color:var(--primary);color:#fff;border:none;border-radius:4px;font-weight:600;cursor:pointer;transition:background-color .2s ease}.admin-form button:hover{background-color:var(--primary-dark)}.admin-message{padding:1rem;margin-bottom:1.5rem;background-color:#e8f5e9;color:#2e7d32;border-radius:4px;border:1px solid #c8e6c9}.users-table{display:flex;flex-direction:column;gap:0;border:1px solid var(--border);border-radius:4px;overflow:hidden}.table-header{display:grid;grid-template-columns:1fr 1fr 1fr .5fr;gap:1rem;padding:1rem;background:#fff;font-weight:600;border-bottom:1px solid var(--border)}.table-row{display:grid;grid-template-columns:1fr 1fr 1fr .5fr;gap:1rem;padding:1rem;background:#fff;border-bottom:1px solid var(--border);align-items:center}.table-row:last-child{border-bottom:none}.table-row:nth-child(2n){background:var(--bg-secondary)}.delete-btn{padding:.5rem 1rem;background-color:var(--error);color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:.9rem;transition:background-color .2s ease}.delete-btn:hover{background-color:#c0392b}@media (max-width: 768px){.navbar{flex-direction:column;gap:1rem}.navbar-menu{width:100%;justify-content:center;flex-wrap:wrap}.user-info{border-left:none;border-top:1px solid var(--border);padding-left:0;padding-top:1rem;width:100%;justify-content:center}.video-container{grid-template-columns:1fr}.video-wrapper.local{grid-column:1}.users-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.table-header,.table-row{grid-template-columns:1fr 1fr;gap:.5rem}}@media (max-width: 480px){.main-content{padding:1rem}.auth-card{padding:1.5rem}.auth-card h1{font-size:1.5rem}.users-grid,.table-header,.table-row{grid-template-columns:1fr}}.landing{display:flex;flex-direction:column;min-height:100vh;background:linear-gradient(135deg,#0b0f19,#1a2238);color:#f5f7fa}.landing-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem}.landing-brand{font-size:1.1rem;font-weight:600;letter-spacing:.05em;opacity:.9}.landing-login-btn{background:#ffffff14;border:1px solid rgba(255,255,255,.25);color:#f5f7fa;padding:.4rem 1rem;border-radius:6px;font-size:.85rem;font-weight:500;cursor:pointer;transition:background .15s ease,border-color .15s ease}.landing-login-btn:hover{background:#ffffff26;border-color:#ffffff73}.landing-hero{flex:1;display:flex;align-items:center;justify-content:center}.landing-hero h1{font-size:clamp(2.5rem,8vw,5rem);font-weight:700;letter-spacing:-.02em}.login-modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;z-index:100;padding:1rem}.login-modal{background:#fff;color:var(--text-primary);border-radius:12px;padding:2rem;width:100%;max-width:360px;box-shadow:var(--shadow-lg);position:relative}.login-modal h2{margin:0 0 1.25rem;font-size:1.25rem;font-weight:600}.login-modal-close{position:absolute;top:.5rem;right:.75rem;background:none;border:none;font-size:1.5rem;line-height:1;color:var(--text-secondary);cursor:pointer;padding:.25rem .5rem}.login-modal-close:hover{color:var(--text-primary)}.row-actions{display:flex;gap:.4rem;flex-wrap:wrap}.edit-btn,.pw-btn{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border);padding:.35rem .7rem;border-radius:6px;font-size:.8rem;cursor:pointer;transition:background .15s ease}.edit-btn:hover,.pw-btn:hover{background:#e8eaed}.pw-btn{border-color:#b8d4ff;color:var(--primary)}.pw-btn:hover{background:#eef4ff}.call-error{background:#fff3cd;border:1px solid #ffe48a;color:#7a5b00;padding:.6rem 1rem;margin:.75rem 1rem;border-radius:6px;font-size:.9rem}.video-waiting{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#0006;color:#fff;font-size:.95rem;letter-spacing:.05em}.users-view-split{display:grid;grid-template-columns:1fr 1fr;gap:2rem;padding:2rem;align-items:start}.users-pane h2,.my-video-pane h3{margin-bottom:1rem}.my-video-pane{position:sticky;top:1rem}.my-video-pane video{width:100%;aspect-ratio:16 / 9;border-radius:10px;background:#000;object-fit:cover}@media (max-width: 768px){.users-view-split{grid-template-columns:1fr;padding:1rem;gap:1rem}}.toast-stack{position:fixed;top:1rem;right:1rem;display:flex;flex-direction:column;gap:.5rem;z-index:1000;pointer-events:none}.toast{display:flex;align-items:center;gap:.6rem;background:#141823eb;color:#f5f7fa;padding:.6rem 1rem;border-radius:8px;font-size:.9rem;box-shadow:0 6px 18px #00000040;animation:toast-in .25s ease-out;pointer-events:auto}.toast-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.toast-online .toast-dot{background:#2ecc71;box-shadow:0 0 8px #2ecc7199}.toast-offline .toast-dot{background:#95a5a6}.toast-info .toast-dot{background:#3498db}@keyframes toast-in{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}.my-video-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;width:100%;aspect-ratio:16 / 9;background:#1a2238;color:#ffffffd9;border-radius:10px;text-align:center;padding:1.5rem}.my-video-placeholder p{margin:0;font-size:.95rem;opacity:.8}.enable-cam-btn{background:var(--primary);color:#fff;border:none;padding:.6rem 1.2rem;border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;transition:background .15s ease}.enable-cam-btn:hover{background:var(--primary-dark)}.navbar-hamburger{display:none;background:none;border:none;font-size:1.6rem;line-height:1;cursor:pointer;color:var(--text-primary);padding:.25rem .6rem;border-radius:6px}.navbar-hamburger:hover{background:var(--bg-secondary)}.navbar-backdrop{display:none}@media (max-width: 768px){.navbar{position:relative;padding:.75rem 1rem}.navbar-hamburger{display:block;z-index:21}.navbar-menu{position:absolute;top:calc(100% + .5rem);right:.75rem;flex-direction:column;align-items:stretch;gap:.25rem;background:var(--bg-primary);box-shadow:var(--shadow-lg);border-radius:8px;padding:.75rem;min-width:200px;z-index:20;transform:scale(.95);transform-origin:top right;opacity:0;pointer-events:none;transition:opacity .15s ease,transform .15s ease}.navbar-menu.is-open{opacity:1;transform:scale(1);pointer-events:auto}.navbar-menu .nav-btn{text-align:left;padding:.6rem .75rem;border-radius:6px}.navbar-menu .user-info{flex-direction:column;align-items:stretch;padding-left:0;border-left:none;border-top:1px solid var(--border);padding-top:.6rem;margin-top:.4rem;gap:.5rem}.navbar-menu .logout-btn{width:100%}.navbar-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:transparent;z-index:19}}