*{margin:0;padding:0;box-sizing:border-box}
:root{--brand:#1a56a8;--bg:#fafafa;--card:#fff;--text:#1a1a1a;--muted:#888;--border:#e0e0e0;--green:#4caf50;--orange:#ff9800;--anim:.4s cubic-bezier(.34,1.56,.64,1)}
body{font-family:-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;min-height:100vh}

/* Header */
.header{background:linear-gradient(135deg,#1a56a8 0%,#0e3266 100%);color:#fff;padding:14px 16px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10}
.header h1{font-size:18px;font-weight:600}
.header .logout{background:none;border:1px solid rgba(255,255,255,.4);color:#fff;padding:4px 12px;border-radius:6px;font-size:13px;cursor:pointer;transition:opacity var(--anim)}

/* Auth forms */
.auth-wrap{display:flex;flex-direction:column;align-items:center;min-height:100vh;min-height:100dvh;padding:16px;background:linear-gradient(135deg,#1a56a8 0%,#0e3266 100%);overflow-y:auto}
.auth-card{background:#fff;border-radius:16px;padding:24px 20px;width:100%;max-width:340px;margin:auto 0;animation:fadeSlideUp var(--anim)}
.auth-card h2{color:var(--muted);font-size:16px;margin-bottom:14px;text-align:center;font-weight:500;transition:all var(--anim)}
.auth-card input{display:block;width:100%;padding:10px 12px;margin-bottom:10px;border:1px solid var(--border);border-radius:8px;font-size:15px;outline:none;transition:border-color var(--anim)}
.auth-card input:focus{border-color:var(--brand)}
.auth-card .btn{display:block;width:100%;padding:11px;background:var(--brand);color:#fff;border:none;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:opacity var(--anim)}
.auth-card .btn:disabled{opacity:.5}
.auth-card .switch{text-align:center;margin-top:12px;font-size:13px;color:var(--muted)}
.auth-card .switch a{color:var(--brand);cursor:pointer;text-decoration:underline}
.auth-card .error{color:#d32f2f;font-size:13px;margin-bottom:8px;text-align:center}

/* Main */
.main{padding:12px 16px 80px}
.empty{text-align:center;color:var(--muted);padding:48px 16px;font-size:15px;animation:fadeIn var(--anim)}

/* Loader */
.loader-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 16px;animation:fadeIn var(--anim)}
.loader-spin{width:48px;height:48px;border:4px solid var(--border);border-top-color:var(--brand);border-radius:50%;animation:spin .8s linear infinite}
.loader-wrap p{margin-top:16px;color:var(--muted);font-size:14px}
@keyframes spin{to{transform:rotate(360deg)}}

/* Connection card */
.conn-card{background:var(--card);border-radius:14px;padding:16px;margin-bottom:12px;box-shadow:0 1px 3px rgba(0,0,0,.08);animation:fadeSlideUp var(--anim) both}
.conn-card:nth-child(2){animation-delay:.05s}
.conn-card:nth-child(3){animation-delay:.1s}
.conn-card:nth-child(4){animation-delay:.15s}
.conn-header{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.conn-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0;transition:background var(--anim)}
.conn-dot.online{background:var(--green)}
.conn-dot.offline{background:var(--border)}
.conn-host{font-size:15px;font-weight:600;flex:1}
.conn-status{font-size:11px;color:var(--muted);transition:color var(--anim)}

/* Number row */
.num-row{display:flex;align-items:center;padding:8px 0;border-top:1px solid var(--border)}
.num-label{flex:1;font-size:15px}
.num-call{background:var(--brand);color:#fff;border:none;padding:6px 18px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all var(--anim)}
.num-call:active{opacity:.7;transform:scale(.96)}
.num-call:disabled{opacity:.4}
.num-call.calling{background:var(--orange);animation:pulse .8s infinite}

/* Add key */
.add-key{margin-top:16px;display:flex;gap:8px}
.add-key input{flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;transition:border-color var(--anim)}
.add-key input:focus{border-color:var(--brand)}
.add-key button{padding:8px 16px;background:var(--brand);color:#fff;border:none;border-radius:8px;font-size:14px;cursor:pointer;transition:opacity var(--anim)}

/* Snackbar */
.snackbar{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);background:#333;color:#fff;padding:10px 20px;border-radius:8px;font-size:14px;z-index:100;opacity:0;transition:all .4s cubic-bezier(.34,1.56,.64,1)}
.snackbar.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* Bottom bar (reg hint + PWA install) */
.bottom-bar{position:fixed;bottom:0;left:0;right:0;z-index:19;transform:translateY(100%);transition:transform .4s ease-out;background:#fff;border-top:1px solid var(--border);pointer-events:none}
.bottom-bar.visible{transform:translateY(0);pointer-events:auto}
.pwa-banner{padding:12px 16px;text-align:center}
.pwa-banner button{background:var(--orange);color:#fff;border:none;outline:none;padding:12px 24px;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;width:100%;max-width:360px;-webkit-appearance:none;transition:opacity var(--anim)}
.pwa-banner button:active{opacity:.8}

/* Status bar (WS + call status) */
.ws-bar{text-align:center;padding:6px;font-size:12px;color:#fff;background:var(--orange);transition:all var(--anim);max-height:30px;overflow:hidden}
.ws-bar.connected,.ws-bar.success{background:var(--green)}
.ws-bar.calling{background:var(--brand);animation:pulse .8s infinite}
.ws-bar.warning{background:var(--orange)}
.ws-bar.danger{background:#c23}
.ws-bar.info{background:var(--brand)}
.ws-bar.hidden{max-height:0;padding:0;opacity:0}

/* Animations */
@keyframes fadeSlideUp{0%{opacity:0;transform:translateY(20px)}70%{opacity:1;transform:translateY(-4px)}100%{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.6}}

/* E2EE warn block on PWA register form */
.e2ee-warn{margin:14px 0 0;font-size:12px;line-height:1.5;color:#b58800;background:#fff8e1;border:1px solid #ffd54f;border-radius:8px;padding:10px 12px}