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transparent), transparent 54%), radial-gradient(circle at 50% 90%, color-mix(in srgb, var(--glow-3) 60%, transparent), transparent 56%), var(--app-bg);filter:blur(1px)saturate(1.05);position:absolute;inset:0}.auth-page-card{z-index:1;position:relative}.auth-page-head{justify-content:flex-start}.login-card{background:linear-gradient(180deg, var(--login-card-1), var(--login-card-2));border:1px solid var(--login-card-border);width:min(480px,100%);box-shadow:0 24px 70px var(--login-card-shadow);border-radius:18px;flex-direction:column;gap:14px;padding:22px;display:flex}.login-head{justify-content:space-between;align-items:flex-start;gap:14px;display:flex}.login-head h2{color:var(--login-title);margin:0;font-size:28px}.login-head p{color:var(--login-sub);margin:6px 0 0;font-size:14px}.login-close{border:1px solid var(--login-close-border);background:var(--login-close-bg);width:36px;height:36px;color:var(--login-close-text);cursor:pointer;border-radius:10px;font-size:24px;line-height:1}.login-field{color:var(--login-label);gap:7px;font-size:14px;display:grid}.login-field input{border:1px solid var(--login-input-border);background:var(--login-input-bg);color:var(--login-input-text);border-radius:11px;padding:12px 13px;font-size:15px}.login-field input:focus{outline:2px solid var(--login-input-focus);outline-offset:1px}.login-row{justify-content:space-between;align-items:center;gap:12px;display:flex}.auth-mode-switch{gap:8px;display:flex}.auth-mode-switch button{border:1px solid var(--btn-border);background:var(--btn-bg);color:var(--btn-text);cursor:pointer;border-radius:10px;flex:1;padding:9px 12px;font-size:13px}.auth-mode-switch button.active{border-color:var(--theme-switch-active-border);background:var(--theme-switch-active-bg);color:var(--text-title)}.auth-mode-switch button:disabled{opacity:.5;cursor:not-allowed}.remember-me{color:var(--remember-text);align-items:center;gap:8px;font-size:14px;display:inline-flex}.remember-me input{accent-color:var(--link-accent)}.link-btn{color:var(--link-accent);cursor:pointer;background:0 0;border:none;padding:0;font-size:14px}.link-btn:hover{text-decoration:underline}.auth-back-link{align-self:flex-start}.login-actions{justify-content:flex-end;gap:10px;margin-top:4px;display:flex}.login-actions button[type=submit]{background:var(--submit-bg);border-color:var(--submit-border);color:#fff;min-width:120px}.confirm-modal{background:var(--modal-overlay);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:11;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.confirm-card{background:linear-gradient(180deg, var(--login-card-1), var(--login-card-2));border:1px solid var(--login-card-border);width:min(440px,100%);box-shadow:0 24px 70px var(--login-card-shadow);border-radius:16px;gap:12px;padding:18px;display:grid}.confirm-card h3{color:var(--text-title);margin:0;font-size:20px}.confirm-text{color:var(--text-muted);margin:0;font-size:14px}.confirm-card input{border:1px solid var(--login-input-border);background:var(--login-input-bg);color:var(--login-input-text);border-radius:10px;padding:10px 12px;font-size:14px}.confirm-card input:focus{outline:2px solid var(--login-input-focus);outline-offset:1px}.confirm-actions{justify-content:flex-end;gap:8px;display:flex}.confirm-actions button{border:1px solid var(--btn-border);background:var(--btn-bg);color:var(--btn-text);cursor:pointer;border-radius:10px;padding:8px 12px}.confirm-actions .danger{background:color-mix(in srgb, #ef4444 22%, var(--btn-bg));color:#fff;border-color:#ef4444}@media (width<=960px){.auth-page{padding:12px}.app-shell{grid-template-columns:1fr;min-height:100dvh}.app-shell.sidebar-hidden{grid-template-columns:1fr}.left-panel{z-index:20;pointer-events:none;position:fixed;inset:0}.sidebar{border-right:1px solid var(--mobile-sidebar-border);pointer-events:auto;border-bottom:none;border-radius:0 18px 18px 0;width:min(86vw,340px);height:100dvh;max-height:100dvh;transition:transform .24s,opacity .22s;transform:translate(-104%);box-shadow:0 12px 30px #0000004d}.sidebar.visible{transform:translate(0)}.sidebar.hidden{opacity:1;transform:translate(-104%)}.sidebar-rail{display:none}.chat-area{grid-template-rows:auto 1fr auto;width:100%;height:100dvh;min-height:100dvh}.mobile-topbar{z-index:3;border-bottom:1px solid var(--border-main);background:color-mix(in srgb, var(--chat-bg) 88%, var(--app-bg) 12%);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);grid-template-columns:40px 1fr 40px;align-items:center;gap:8px;height:52px;padding:6px 10px;display:grid;position:sticky;top:0;box-shadow:0 4px 14px #00000024}.mobile-topbar-btn{border:1px solid var(--btn-border);background:var(--btn-bg);width:36px;height:36px;color:var(--btn-text);cursor:pointer;border-radius:10px;padding:0;font-size:18px;line-height:1}.mobile-topbar-title{text-align:center;color:var(--text-title);letter-spacing:.2px;font-size:14px;font-weight:700}.empty-state{margin-top:-28px;padding-inline:16px}.empty-state h1{font-size:26px}.messages{gap:10px;padding:16px 12px}.bubble{max-width:min(92vw,680px);padding:12px 14px}.message-content{font-size:15px;line-height:1.42}.composer{width:calc(100% - 16px);margin:0 auto max(14px, env(safe-area-inset-bottom));align-items:center;gap:6px;padding:0}.composer-actions{align-self:center;align-items:center}.composer-input-wrap{align-items:center;min-height:44px;padding:0 8px}.composer textarea{min-height:44px;padding:10px;font-size:16px;line-height:1.5}.composer textarea::placeholder{line-height:1.5}.composer-actions>button:last-child{border-radius:999px;width:44px;min-width:44px;height:44px}.send-icon{width:32px;height:32px}.chat-hint,.chat-error{width:calc(100% - 16px);margin-bottom:8px}.login-modal,.confirm-modal{padding:12px}.login-card,.confirm-card{box-sizing:border-box;width:100%;max-width:460px}}