.bg-change-page{--bg-accent:#22d3ee;--bg-blue:#3b82f6;padding-bottom:40px}
.bg-change-hero{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:18px;padding:22px;border:1px solid rgba(34,211,238,.24);border-radius:18px;background:linear-gradient(135deg,rgba(8,34,52,.94),rgba(5,18,33,.88))}
.bg-change-hero span,.bg-key-modal header span{color:var(--bg-accent);font-size:10px;font-weight:900;letter-spacing:1.5px}.bg-change-hero h2{margin:6px 0 4px;font-size:25px}.bg-change-hero p{margin:0;color:#8fa3b8;font-size:13px}
.bg-icon-button{display:grid;place-items:center;width:40px;height:40px;border:1px solid rgba(34,211,238,.32);border-radius:11px;background:rgba(34,211,238,.08);color:#67e8f9;cursor:pointer}
.bg-change-layout{display:grid;grid-template-columns:minmax(260px,.85fr) minmax(300px,1fr) minmax(300px,1.15fr);gap:15px;align-items:start}.bg-change-card{min-width:0;padding:17px;border:1px solid rgba(148,163,184,.16);border-radius:16px;background:rgba(5,18,32,.88);box-shadow:0 16px 40px rgba(0,0,0,.15)}
.bg-source-drop-zone{transition:border-color .18s,box-shadow .18s,background .18s}.bg-source-drop-zone.is-dragging{border-color:#22d3ee;background:rgba(8,145,178,.12);box-shadow:0 0 0 3px rgba(34,211,238,.12)}
.bg-card-title{display:flex;align-items:center;gap:10px;margin-bottom:14px}.bg-card-title>span{display:grid;place-items:center;width:31px;height:31px;border:1px solid rgba(34,211,238,.34);border-radius:9px;background:rgba(8,145,178,.12);color:#67e8f9;font-size:11px;font-weight:900}.bg-card-title b,.bg-card-title small{display:block}.bg-card-title small{margin-top:3px;color:#7f95aa;font-size:10px;line-height:1.4}
.bg-empty{display:grid;place-items:center;min-height:230px;padding:20px;border:1px dashed rgba(148,163,184,.23);border-radius:13px;background:rgba(2,10,20,.58);text-align:center}.bg-empty i{color:#22d3ee;font-size:38px}.bg-empty b{margin-top:10px}.bg-empty small{max-width:240px;color:#718096;line-height:1.5}
.bg-image-stage{display:grid;place-items:center;min-height:230px;max-height:460px;overflow:hidden;border:1px solid rgba(34,211,238,.2);border-radius:13px;background:radial-gradient(circle,rgba(14,116,144,.12),rgba(1,7,16,.88))}.bg-image-stage img{display:block;max-width:100%;max-height:460px;object-fit:contain}.bg-result-stage{min-height:320px}
.bg-empty[hidden],.bg-image-stage[hidden],.bg-loading[hidden]{display:none!important}
.bg-file-picker{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:10px;padding:10px;border:1px solid rgba(34,211,238,.25);border-radius:10px;color:#67e8f9;cursor:pointer;font-size:12px;font-weight:800}.bg-meta{display:block;min-height:18px;margin-top:8px;color:#718096;font-size:10px;overflow-wrap:anywhere}
.bg-field{display:block;margin-bottom:13px}.bg-field>span{display:block;margin-bottom:7px;color:#a8bacb;font-size:11px;font-weight:800}.bg-field textarea,.bg-field select,.bg-field input{width:100%;box-sizing:border-box;border:1px solid rgba(148,163,184,.22);border-radius:10px;padding:11px 12px;background:#040d19;color:#f8fafc;outline:none}.bg-field textarea:focus,.bg-field select:focus,.bg-field input:focus{border-color:#22d3ee;box-shadow:0 0 0 3px rgba(34,211,238,.08)}
.bg-mode-switch{display:grid;grid-template-columns:1fr 1fr;gap:4px;margin-bottom:14px;padding:4px;border:1px solid rgba(148,163,184,.18);border-radius:11px;background:rgba(2,10,20,.7)}.bg-mode-switch button{padding:9px;border:0;border-radius:8px;background:transparent;color:#7f95aa;font-size:11px;font-weight:800;cursor:pointer}.bg-mode-switch button.active{background:rgba(34,211,238,.14);color:#67e8f9;box-shadow:inset 0 0 0 1px rgba(34,211,238,.3)}#bgAiControls[hidden],#bgUploadControls[hidden],#bgUploadEmpty[hidden],#bgTargetEmpty[hidden],.bg-upload-preview[hidden],.bg-upload-remove[hidden]{display:none!important}.bg-upload-drop-zone{display:grid;place-items:center;min-height:215px;padding:12px;border:1px dashed rgba(34,211,238,.35);border-radius:12px;background:rgba(2,10,20,.58);cursor:pointer;text-align:center;transition:.18s}.bg-upload-drop-zone.drag-over{border-color:#22d3ee;background:rgba(8,145,178,.14);box-shadow:0 0 0 3px rgba(34,211,238,.1)}#bgUploadEmpty,#bgTargetEmpty{display:grid;place-items:center;gap:8px}#bgUploadEmpty i,#bgTargetEmpty i{font-size:36px;color:#22d3ee}#bgUploadEmpty small,#bgTargetEmpty small,.bg-upload-preview small{color:#718096;font-size:10px}.bg-upload-preview{display:grid;gap:8px;place-items:center;width:100%}.bg-upload-preview img{display:block;max-width:100%;max-height:245px;border-radius:9px;object-fit:contain}.bg-upload-remove{width:100%;margin:8px 0 12px;padding:8px;border:1px solid rgba(248,113,113,.28);border-radius:9px;background:rgba(127,29,29,.12);color:#fca5a5;cursor:pointer}
.bg-erase-person{display:flex;align-items:flex-start;gap:9px;margin:10px 0 13px;padding:10px;border:1px solid rgba(34,211,238,.18);border-radius:10px;background:rgba(8,145,178,.06);cursor:pointer}.bg-erase-person input{margin-top:2px;accent-color:#22d3ee}.bg-erase-person b,.bg-erase-person small{display:block}.bg-erase-person b{color:#c9f7ff;font-size:11px}.bg-erase-person small{margin-top:3px;color:#718096;font-size:9px;line-height:1.4}
.bg-generate{width:100%;justify-content:center}.bg-generate:disabled{opacity:.45;cursor:not-allowed}.bg-loading{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:12px;color:#67e8f9;font-size:11px}.bg-loading i{animation:spin 1s linear infinite}.bg-result-loading{min-height:230px;flex-direction:column;font-size:13px}.bg-result-loading i{font-size:28px}.bg-result-card #bgDownloadBtn,.bg-view-button{width:100%;justify-content:center;margin-top:11px}.bg-view-button:disabled{opacity:.45;cursor:not-allowed}
.bg-toast{position:sticky;top:10px;z-index:20;margin:0 0 14px;padding:11px 13px;border:1px solid rgba(34,211,238,.35);border-radius:11px;background:#082332;color:#cffafe;font-size:12px;box-shadow:0 12px 32px rgba(0,0,0,.32)}.bg-toast.error{border-color:rgba(248,113,113,.55);background:#35131c;color:#fecdd3}.bg-toast.success{border-color:rgba(52,211,153,.45);background:#08291f;color:#a7f3d0}
.bg-viewer{position:fixed;inset:0;z-index:2147483647;display:grid;place-items:center;padding:22px}.bg-viewer[hidden]{display:none!important}.bg-viewer-backdrop{position:absolute;inset:0;background:rgba(1,7,16,.92);backdrop-filter:blur(12px)}.bg-viewer>section{position:relative;display:flex;flex-direction:column;width:min(1280px,96vw);height:min(860px,92vh);overflow:hidden;border:1px solid rgba(34,211,238,.42);border-radius:17px;background:#030b16;box-shadow:0 30px 90px rgba(0,0,0,.8)}.bg-viewer header{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:11px 14px;border-bottom:1px solid rgba(34,211,238,.18);color:#67e8f9;font-size:10px;font-weight:900;letter-spacing:1.2px}.bg-viewer header div{display:flex;gap:8px}.bg-viewer header button{display:flex;align-items:center;gap:6px;padding:8px 10px;border:1px solid rgba(34,211,238,.25);border-radius:9px;background:rgba(8,145,178,.1);color:#cffafe;cursor:pointer}.bg-viewer-canvas{display:grid;place-items:center;flex:1;min-height:0;padding:14px;overflow:auto;background:radial-gradient(circle,rgba(14,116,144,.12),rgba(1,7,16,.96))}.bg-viewer-canvas img{display:block;max-width:100%;max-height:100%;object-fit:contain}
.bg-key-modal{position:fixed;inset:0;z-index:2147483647;display:grid;place-items:center;padding:20px;background:rgba(1,7,16,.86);backdrop-filter:blur(10px)}.bg-key-modal[hidden]{display:none!important}.bg-key-modal>section{width:min(500px,94vw);padding:18px;border:1px solid rgba(34,211,238,.38);border-radius:17px;background:#071522;box-shadow:0 30px 80px rgba(0,0,0,.65)}.bg-key-modal header{display:flex;justify-content:space-between;align-items:flex-start}.bg-key-modal h3{margin:4px 0 0}.bg-key-modal header button{width:35px;height:35px;border:1px solid rgba(248,113,113,.3);border-radius:9px;background:rgba(127,29,29,.15);color:#fca5a5}.bg-key-modal p{color:#8fa3b8;font-size:11px;line-height:1.55}.bg-secret-row{display:flex;gap:7px}.bg-secret-row input{flex:1}.bg-secret-row button{width:42px;border:1px solid rgba(148,163,184,.22);border-radius:10px;background:#07111f;color:#94a3b8}.bg-key-modal footer{display:flex;justify-content:flex-end;gap:9px;margin-top:16px}
@media(max-width:1100px){.bg-change-layout{grid-template-columns:1fr 1fr}.bg-result-card{grid-column:1/-1}}@media(max-width:720px){.bg-change-layout{grid-template-columns:1fr}.bg-result-card{grid-column:auto}.bg-change-hero{padding:16px}}