:root{--bg: #0f1117;--surface: #181b24;--surface-2: #20242f;--border: #2c313d;--border-active: #5b8cff;--text: #e6e9ef;--text-dim: #9aa3b2;--accent: #5b8cff;--accent-hover: #7aa2ff;--danger: #ff6b6b;--warn: #ffb454;--ok: #4ade80;--radius: 12px;--gap: 16px}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}.noscript{margin:2rem;padding:1rem;border:1px solid var(--warn);border-radius:var(--radius);color:var(--warn)}#app{max-width:720px;margin:0 auto;padding:32px 20px 64px}.app-header{text-align:center;margin-bottom:28px;position:relative}.app-header h1{font-size:1.7rem;margin:0 0 6px;font-weight:700;letter-spacing:-.5px}.app-header p{margin:0;color:var(--text-dim);font-size:.95rem}.lang-toggle{position:absolute;top:0;right:0;display:flex;gap:4px}.lang-btn{padding:4px 12px;border-radius:6px;border:1px solid var(--border);background:transparent;color:var(--text-dim);font-size:.8em;font-weight:600;cursor:pointer;transition:all .15s}.lang-btn:hover{border-color:var(--accent);color:var(--accent)}.lang-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.size-presets{display:flex;gap:8px;margin-top:6px;flex-wrap:wrap}.size-btn{padding:6px 14px;border-radius:8px;border:1px solid var(--border);background:var(--surface-2);color:var(--text-dim);font-size:.85em;font-weight:600;cursor:pointer;transition:all .15s;white-space:nowrap}.size-btn:hover{border-color:var(--accent);color:var(--accent)}.size-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);background:var(--surface);padding:48px 24px;text-align:center;cursor:pointer;transition:border-color .15s,background .15s,transform .05s;outline:none}.dropzone:hover,.dropzone:focus-visible{border-color:var(--accent)}.dropzone.is-dragging{border-color:var(--border-active);background:var(--surface-2);transform:scale(1.01)}.dropzone .dz-icon{font-size:2.6rem;line-height:1;margin-bottom:12px}.dropzone .dz-primary{font-size:1.05rem;font-weight:600;margin-bottom:4px}.dropzone .dz-secondary{color:var(--text-dim);font-size:.9rem}.dropzone input[type=file]{display:none}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-top:var(--gap)}.card h2{font-size:.8rem;text-transform:uppercase;letter-spacing:1px;color:var(--text-dim);margin:0 0 14px}.file-row{display:flex;align-items:center;gap:12px}.file-row .file-meta{flex:1;min-width:0}.file-row .file-name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-row .file-sub{color:var(--text-dim);font-size:.85rem}.direction{display:flex;gap:8px;margin-top:14px}.direction button{flex:1;padding:10px;border-radius:8px;border:1px solid var(--border);background:var(--surface-2);color:var(--text-dim);font-weight:600;cursor:pointer;transition:all .12s}.direction button.active{border-color:var(--accent);background:#5b8cff1f;color:var(--text)}.field{margin-bottom:16px}.field:last-child{margin-bottom:0}.field label{display:block;font-size:.85rem;margin-bottom:6px;color:var(--text-dim)}.field .field-value{float:right;color:var(--text);font-variant-numeric:tabular-nums}.field input[type=range]{width:100%;accent-color:var(--accent)}.field input[type=number],.field select{width:100%;padding:8px 10px;background:var(--surface-2);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:.95rem}.advanced summary{cursor:pointer;color:var(--accent);font-size:.85rem;-webkit-user-select:none;user-select:none}.advanced[open] summary{margin-bottom:14px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:14px;border:none;border-radius:10px;background:var(--accent);color:#fff;font-size:1rem;font-weight:700;cursor:pointer;transition:background .12s,opacity .12s}.btn:hover:not(:disabled){background:var(--accent-hover)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.secondary{background:var(--surface-2);color:var(--text);border:1px solid var(--border)}.btn.secondary:hover:not(:disabled){background:var(--border)}.btn-row{display:flex;gap:10px;margin-top:var(--gap)}.progress-wrap{margin-top:var(--gap)}.progress-label{display:flex;justify-content:space-between;font-size:.85rem;color:var(--text-dim);margin-bottom:8px}.progress-track{height:10px;background:var(--surface-2);border-radius:999px;overflow:hidden}.progress-bar{height:100%;width:0;background:linear-gradient(90deg,var(--accent),var(--accent-hover));transition:width .2s}.progress-bar.indeterminate{width:35%!important;animation:slide 1.1s ease-in-out infinite}@keyframes slide{0%{margin-left:-35%}to{margin-left:100%}}.message{padding:12px 14px;border-radius:8px;margin-top:var(--gap);font-size:.9rem}.message.warn{background:#ffb4541f;border:1px solid var(--warn);color:var(--warn)}.message.error{background:#ff6b6b1f;border:1px solid var(--danger);color:var(--danger)}.message.error strong{display:block;margin-bottom:4px}.result{text-align:center}.result .preview{max-width:100%;max-height:360px;border-radius:8px;background:#000;margin-bottom:var(--gap)}.result .result-meta{color:var(--text-dim);font-size:.85rem;margin-bottom:var(--gap)}.size-comparison{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:.9rem;color:var(--text-dim);margin:12px 0 8px;padding:10px 14px;background:var(--surface-2);border-radius:8px;border:1px solid var(--border)}.est-size-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.92rem;margin-top:8px;margin-bottom:4px;padding:12px 16px;background:var(--surface-2);border-radius:10px;border:1px solid var(--border-active)}.footer{text-align:center;margin-top:40px;color:var(--text-dim);font-size:.8rem}.footer a{color:var(--accent);text-decoration:none}