:root{--bg-dark:#0a0a0c;--sidebar-bg:#141417;--accent:#6366f1;--accent-hover:#4f46e5;--text-primary:#fff;--text-secondary:#a1a1aa;--border:#27272a;--card-bg:#1c1c21}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-dark);color:var(--text-primary);height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;overflow:hidden}.auth-screen{background:var(--bg-dark);justify-content:center;align-items:center;width:100vw;height:100vh;padding:24px;display:flex}.auth-panel{flex-direction:column;gap:12px;width:min(100%,360px);display:flex}.auth-panel h1{margin-bottom:8px;font-size:24px;font-weight:700}.auth-panel label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;font-size:12px;font-weight:600}.auth-panel input{border:1px solid var(--border);background:var(--sidebar-bg);width:100%;height:46px;color:var(--text-primary);border-radius:10px;outline:none;padding:0 12px;font-size:15px}.auth-panel input:focus{border-color:var(--accent)}.auth-error{color:#f87171;min-height:18px;font-size:12px}.auth-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:10px;width:100%;height:46px;font-size:15px;font-weight:700;transition:background .2s,opacity .2s}.auth-btn:hover:not(:disabled){background:var(--accent-hover)}.auth-btn:disabled{opacity:.55;cursor:not-allowed}.app-container{height:100vh;display:flex}.sidebar{background-color:var(--sidebar-bg);border-right:1px solid var(--border);flex-direction:column;width:380px;padding:24px;display:flex;overflow-y:auto}.brand{align-items:center;gap:12px;margin-bottom:32px;display:flex}.logo-icon{width:32px;height:32px;color:var(--accent)}.brand h1{letter-spacing:-.5px;font-size:20px;font-weight:700}.mode-tabs{background:var(--bg-dark);border-radius:12px;margin-bottom:24px;padding:4px;display:flex}.mode-tabs button{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:8px;flex:1;padding:10px;font-size:14px;font-weight:500;transition:all .2s}.mode-tabs button.active{background:var(--card-bg);color:var(--text-primary);box-shadow:0 4px 12px #0003}.control-group{margin-bottom:24px}.control-group label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;font-size:12px;font-weight:600;display:block}textarea{background:var(--bg-dark);border:1px solid var(--border);width:100%;color:var(--text-primary);resize:none;border-radius:12px;padding:12px;font-size:14px;transition:border-color .2s}textarea:focus{border-color:var(--accent);outline:none}.upload-box{background:var(--bg-dark);border:2px dashed var(--border);cursor:pointer;border-radius:12px;justify-content:center;align-items:center;width:100%;min-height:132px;transition:all .2s;display:flex;overflow:hidden}.upload-box:hover{border-color:var(--accent);background:#6366f10d}.upload-placeholder{color:var(--text-secondary);flex-direction:column;align-items:center;gap:8px;display:flex}.upload-placeholder svg{width:24px;height:24px}.upload-placeholder span{font-size:12px}.preview-grid{grid-template-columns:repeat(3,1fr);gap:8px;width:100%;padding:8px;display:grid}.preview-item{aspect-ratio:1;background:var(--card-bg);border:1px solid #0000;border-radius:8px;width:100%;position:relative;overflow:hidden}.preview-item.status-compressing,.preview-item.status-uploading{border-color:var(--accent)}.preview-item.status-uploaded{border-color:#22c55e}.preview-item.status-failed{border-color:#ef4444}.preview-img{aspect-ratio:1;object-fit:cover;background:var(--card-bg);border-radius:8px;width:100%}.preview-status{min-width:26px;height:22px;color:var(--text-primary);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0a0a0cd1;border-radius:999px;justify-content:center;align-items:center;padding:0 6px;font-size:10px;font-weight:700;line-height:1;display:flex;position:absolute;bottom:6px;right:6px}.preview-status svg{color:#22c55e;width:14px;height:14px}.status-compressing .preview-status,.status-uploading .preview-status{animation:1s ease-in-out infinite pulse}.clear-upload-btn{border:1px solid var(--border);width:100%;color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:8px;margin-top:8px;padding:8px;font-size:12px;transition:all .2s}.clear-upload-btn:hover{border-color:var(--accent);color:var(--text-primary)}.upload-hint{color:var(--text-secondary);margin-top:8px;font-size:12px}.upload-hint.error{color:#f87171}.ratio-grid{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.ratio-grid button{background:var(--bg-dark);border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;border-radius:8px;padding:10px;font-size:13px;transition:all .2s}.ratio-grid button.active{border-color:var(--accent);color:var(--accent);background:#6366f11a}.progress-panel{margin-top:auto;margin-bottom:12px}.progress-meta{color:var(--text-secondary);justify-content:space-between;align-items:center;margin-bottom:8px;font-size:12px;font-weight:600;display:flex}.linear-progress{background:var(--bg-dark);border:1px solid var(--border);border-radius:999px;width:100%;height:8px;overflow:hidden}.linear-progress-fill{background:var(--accent);border-radius:inherit;width:0;height:100%;transition:width .45s linear}.generate-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:12px;width:100%;margin-top:auto;padding:16px;font-size:16px;font-weight:600;transition:background .2s,transform .1s}.progress-panel+.generate-btn{margin-top:0}.generate-btn:hover:not(:disabled){background:var(--accent-hover)}.generate-btn:active:not(:disabled){transform:scale(.98)}.generate-btn:disabled{opacity:.5;cursor:not-allowed}.main-content{background-color:var(--bg-dark);flex:1;justify-content:center;align-items:center;padding:40px;display:flex;position:relative}.welcome-screen{text-align:center}.welcome-content h2{background:linear-gradient(90deg,#fff,#a1a1aa);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:12px;font-size:32px}.welcome-content p{color:var(--text-secondary);font-size:16px}.gallery-container{justify-content:center;align-items:center;width:100%;height:100%;padding:20px;display:flex;overflow:auto}.image-grid,.skeleton-grid{--preview-ratio:1;--image-count:1;width:min(100%, calc((100dvh - 160px) * var(--preview-ratio) * var(--image-count) + 20px * (var(--image-count) - 1)));gap:20px;max-width:1200px;max-height:100%;display:grid}.ratio-4-3 .image-card,.ratio-4-3 .skeleton-card{aspect-ratio:4/3}.ratio-3-4 .image-card,.ratio-3-4 .skeleton-card{aspect-ratio:3/4}.ratio-16-9 .image-card,.ratio-16-9 .skeleton-card{aspect-ratio:16/9}.ratio-9-16 .image-card,.ratio-9-16 .skeleton-card{aspect-ratio:9/16}.ratio-1-1 .image-card,.ratio-1-1 .skeleton-card{aspect-ratio:1}.image-card{background:var(--card-bg);border-radius:16px;position:relative;overflow:hidden;box-shadow:0 10px 30px #00000080}.image-card img{object-fit:contain;background:var(--card-bg);width:100%;height:100%;transition:transform .5s}.image-card:hover img{transform:scale(1.05)}.image-overlay{opacity:0;background:linear-gradient(#0000,#0009);justify-content:flex-end;align-items:flex-end;padding:20px;transition:opacity .3s;display:flex;position:absolute;inset:0}.image-card:hover .image-overlay{opacity:1}.icon-btn{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:#fff;cursor:pointer;background:#fff3;border:none;border-radius:10px;justify-content:center;align-items:center;width:40px;height:40px;transition:background .2s;display:flex}.icon-btn:hover{background:#ffffff4d}.icon-btn svg{width:20px;height:20px}.skeleton-card{background:var(--card-bg);border-radius:16px;position:relative;overflow:hidden}.shimmer{background:linear-gradient(90deg,#0000 0%,#ffffff0d 50%,#0000 100%);animation:1.5s infinite shimmer;position:absolute;inset:0}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}@keyframes pulse{0%,to{opacity:.65}50%{opacity:1}}