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.18s}.model-selector-chevron.open{transform:rotate(180deg)}.model-selector-backdrop{z-index:40;position:fixed;inset:0}.model-selector-menu{z-index:50;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#fffcf6fa;border:1px solid #0f172a1f;border-radius:18px;width:min(296px,100vw - 48px);padding:8px;position:absolute;bottom:calc(100% + 8px);left:0;box-shadow:0 22px 52px #0f172a2e}.model-selector-heading{letter-spacing:.12em;text-transform:uppercase;color:var(--t4);padding:4px 10px 8px;font-size:10px;font-weight:700}.model-selector-option{width:100%;color:var(--t3);text-align:left;background:0 0;border:0;border-radius:14px;align-items:flex-start;gap:10px;padding:10px;transition:background .18s,color .18s,transform .18s;display:flex}.model-selector-option:hover{color:var(--t1);background:#0f172a0d}.model-selector-option.active{color:var(--t1);background:#0f172a14}.model-selector-option-icon{margin-top:2px;font-size:18px;line-height:1}.model-selector-option-body{flex:1;min-width:0}.model-selector-option-head{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.model-selector-option-label{font-size:13px;font-weight:700}.model-selector-option-sub{color:var(--t4);margin-top:4px;font-size:11px;line-height:1.4}.model-selector-check{width:14px;height:14px;color:var(--cyan);flex-shrink:0;margin-top:4px}.model-badge{color:#fff;letter-spacing:.03em;border-radius:999px;justify-content:center;align-items:center;min-height:18px;padding:0 7px;font-size:10px;font-weight:700;display:inline-flex}.badge-blue{background:#2563eb}.badge-purple{background:#7c3aed}.badge-orange{background:#ea580c}.badge-slate{background:#475569}.badge-green{background:#15803d}.badge-pink{background:#db2777}.badge-amber{background:#d97706}.badge-cyan{background:#0891b2}.provider-switch{background:var(--card);border:1px solid var(--border);border-radius:999px;align-items:center;padding:2px;display:inline-flex}.provider-btn{color:var(--t3);cursor:pointer;background:0 0;border:0;border-radius:999px;padding:6px 10px;font-size:11px}.provider-btn.active{color:#fff;background:#1f2937}.mode-chip{color:var(--t4);letter-spacing:.08em;font-size:11px}.attach-doc-thumb{width:42px;height:42px;color:var(--amber);letter-spacing:.08em;background:linear-gradient(135deg,#b453091f,#0f172a14);border:1px solid #b4530933;border-radius:12px;justify-content:center;align-items:center;font-size:11px;font-weight:800;display:inline-flex}.plus-menu-wrap{position:relative}.plus-btn{border:1px solid var(--border);background:var(--card);width:34px;height:34px;color:var(--t2);cursor:pointer;border-radius:11px;font-size:22px;line-height:1}.plus-menu{border:1px solid var(--border2);z-index:20;background:#fffdf8;border-radius:12px;min-width:190px;padding:6px;position:absolute;bottom:calc(100% + 8px);left:0;box-shadow:0 18px 35px #0f172a26}.plus-item{width:100%;color:var(--t2);cursor:pointer;text-align:left;background:0 0;border:0;border-radius:8px;align-items:center;gap:8px;padding:8px;display:flex}.plus-item:hover,.plus-item.active{background:#f3ead7}@media (max-width:920px){.app-shell{max-width:100%}.app-header{z-index:10;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#fcf8efe0;position:sticky;top:0}.input-section{z-index:12;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding-bottom:calc(12px + env(safe-area-inset-bottom));background:#fcf8efeb;position:sticky;bottom:0}}