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#00000059}.settings-panel-title{letter-spacing:.04em;text-transform:uppercase;color:var(--muted);margin:0;font-size:12px;font-weight:600}.theme-grid{grid-template-columns:repeat(2,1fr);gap:8px;display:grid}.theme-tile{background:color-mix(in srgb, var(--text-light) 4%, transparent);cursor:pointer;text-align:left;border:2px solid #0000;border-radius:10px;flex-direction:column;align-items:stretch;gap:6px;padding:8px;display:flex}.theme-tile:hover{background:color-mix(in srgb, var(--text-light) 8%, transparent)}.theme-tile:focus-visible{outline:2px solid var(--accent-strong);outline-offset:1px}.theme-tile-active{border-color:var(--accent-strong);background:color-mix(in srgb, var(--accent) 12%, transparent)}.theme-tile-preview{border:1px solid color-mix(in srgb, var(--text-light) 12%, transparent);border-radius:6px;width:100%;height:36px;display:block}.theme-tile-label{color:var(--text-light);text-align:center;font-size:12px;font-weight:600}.login-screen{min-height:100dvh;padding:24px;padding-top:max(24px, env(safe-area-inset-top));padding-bottom:max(24px, env(safe-area-inset-bottom));background:var(--bg);justify-content:center;align-items:center;display:flex}.login-card{border-radius:var(--radius);background:var(--bg-soft);border:1px solid var(--field-border);flex-direction:column;gap:16px;width:100%;max-width:360px;padding:28px 24px;display:flex}.login-logo{text-align:center;padding:0;font-size:28px}.login-lead{text-align:center;color:var(--muted);margin:0;font-size:15px;line-height:1.5}.login-pin{text-align:center;letter-spacing:.15em;width:100%;min-height:48px;font-size:18px}.login-submit{width:100%;min-height:48px;font-size:16px}.login-error{text-align:center;color:#f5b8b8;margin:0;font-size:14px;line-height:1.4}.login-blocked{color:var(--muted)}.mobile-header,.mobile-menu-btn,.sidebar-backdrop{display:none}@media (max-width:767px){html,body{font-size:16px}.app-shell{min-height:100dvh}.sidebar-backdrop{z-index:200;cursor:pointer;opacity:0;pointer-events:none;background:#062c3cb8;border:none;margin:0;padding:0;transition:opacity .25s;display:block;position:fixed;inset:0}.sidebar-open .sidebar-backdrop{opacity:1;pointer-events:auto}.sidebar{z-index:201;width:min(88vw,300px);box-shadow:none;padding:16px 12px;padding-top:max(16px, env(safe-area-inset-top));padding-bottom:max(16px, env(safe-area-inset-bottom));transition:transform .25s;position:fixed;top:0;bottom:0;left:0;transform:translate(-100%)}.sidebar-open .sidebar{transform:translate(0);box-shadow:4px 0 28px #00000059}.sidebar:after{display:none}.mobile-header{flex-shrink:0;align-items:center;padding-bottom:8px;display:flex}.mobile-menu-btn{border:1px solid var(--field-border);background:var(--bg-soft);cursor:pointer;border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;min-width:48px;min-height:48px;padding:0;display:flex}.mobile-menu-btn:focus-visible{outline:2px solid var(--accent-strong);outline-offset:2px}.mobile-menu-icon{background:var(--text-light);border-radius:1px;width:20px;height:2px;display:block;position:relative}.mobile-menu-icon:before,.mobile-menu-icon:after{content:"";background:var(--text-light);border-radius:1px;width:20px;height:2px;position:absolute;left:0}.mobile-menu-icon:before{top:-6px}.mobile-menu-icon:after{top:6px}.main-area{width:100%;max-width:none;min-height:100dvh;padding:12px 16px;padding-top:max(12px, env(safe-area-inset-top));padding-bottom:max(12px, env(safe-area-inset-bottom));flex:1;margin:0}.chat{gap:12px;padding-bottom:12px}.composer{padding-top:12px;padding-bottom:max(4px, env(safe-area-inset-bottom));gap:10px}.field{min-height:48px;padding:12px 14px;font-size:16px}.btn{min-width:48px;min-height:48px;padding:12px 18px;font-size:16px}.input-main{font-size:16px}.bubble{max-width:90%;padding:14px 16px}.sidebar-search{min-height:48px;padding:12px 14px;font-size:16px}.sidebar-newchat{min-height:48px;padding:13px 16px;font-size:16px}.tree-row{min-height:48px;padding:10px 6px}.tree-toggle{min-width:40px;min-height:40px;font-size:14px}.tree-chat{min-height:48px;padding:12px 8px;font-size:15px}.tree-add{min-height:44px;padding:10px 8px;font-size:14px}.tree-section-add{width:36px;height:36px;font-size:18px}.sidebar-settings{min-width:44px;min-height:44px;font-size:20px}.tree-icon-btn{min-width:40px;min-height:40px;padding:8px;font-size:14px}.tree-inline-input{min-height:44px;padding:10px 12px;font-size:16px}.tree-inline-confirm{width:44px;height:44px}.tree-delete-cancel,.tree-delete-ok{min-height:44px;padding:10px 16px;font-size:14px}.tree-actions{gap:12px;padding:8px 4px}}@media (min-width:768px){.sidebar-backdrop{display:none!important}.sidebar{position:relative;box-shadow:none!important;transform:none!important}}