.bytebeat-card{background:var(--app-surface);border:1px solid var(--app-border);border-radius:24px;box-shadow:var(--app-shadow);padding:18px}.bytebeat-canvas-wrap{position:relative;display:flex;justify-content:center;margin-bottom:16px;min-height:360px}.bytebeat-canvas-wrap canvas{border:1px solid var(--app-border);border-radius:12px;image-rendering:pixelated;max-width:100%;height:auto;display:block}.bytebeat-loading{position:absolute;inset:0;background:color-mix(in srgb,var(--app-surface) 80%,transparent);display:flex;align-items:center;justify-content:center;border-radius:12px;transition:opacity .3s ease;z-index:10}.bytebeat-loading.hidden{opacity:0;pointer-events:none}.bytebeat-spinner{width:36px;height:36px;border:3px solid var(--app-border);border-left-color:var(--color-primary);border-radius:50%;animation:bb-spin 1s linear infinite}@keyframes bb-spin{to{transform:rotate(360deg)}}.bytebeat-field{display:flex;flex-direction:column;gap:8px;margin-bottom:14px}.bytebeat-label{font-size:13px;font-weight:600;color:var(--app-text-muted)}.bytebeat-textarea{width:100%;min-height:96px;padding:12px;border:1px solid var(--app-border);border-radius:12px;background:var(--app-surface-soft);color:var(--app-text);font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:14px;line-height:1.5;resize:vertical;outline:none}.bytebeat-textarea:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--color-primary) 16%,transparent)}.bytebeat-controls{display:flex;gap:10px;flex-wrap:wrap}.bytebeat-btn{appearance:none;height:40px;padding:0 18px;border-radius:12px;border:1px solid var(--app-border);background:var(--app-surface);color:var(--app-text);font-size:14px;font-weight:600;cursor:pointer;transition:background .2s,border-color .2s}.bytebeat-btn:hover{background:var(--app-surface-soft)}.bytebeat-btn-primary{background:var(--color-primary);border-color:var(--color-primary-dark);color:#fff}.bytebeat-btn-primary:hover{filter:brightness(.95);background:var(--color-primary)}.bytebeat-error{margin-top:10px;min-height:1.2em;color:#dc2626;font-size:13px}.ybzj-card{background:var(--app-surface);border:1px solid var(--app-border);border-radius:12px;padding:20px 15px;margin:24px 0}.ybzj-image-area{position:relative;min-height:240px;display:flex;align-items:center;justify-content:center;border:2px dashed var(--app-border);border-radius:10px;background:var(--app-surface-soft);margin-bottom:18px;overflow:hidden}.ybzj-image-area img{max-width:100%;max-height:500px;object-fit:contain;border-radius:8px;display:none}.ybzj-image-area img[src]{display:inline-block}.ybzj-placeholder{color:var(--app-text-muted);font-size:15px;text-align:center;padding:20px}.ybzj-processing-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#ffffffbf;z-index:10}.dark .ybzj-processing-overlay{background:#1e1e1ebf}.ybzj-processing-toast{display:flex;align-items:center;gap:8px;padding:12px 20px;border-radius:8px;background:#000c;color:#fff;font-size:14px}.ybzj-spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:ybzj-spin .6s linear infinite}@keyframes ybzj-spin{to{transform:rotate(360deg)}}.ybzj-field{margin-bottom:18px}.ybzj-label{display:block;font-size:14px;font-weight:600;margin-bottom:6px;color:var(--app-text)}.ybzj-key-hint{font-size:13px;color:var(--app-text-muted);font-weight:400}.ybzj-select,.ybzj-field input{width:100%;height:42px;padding:0 12px;border:1px solid var(--app-border);border-radius:8px;font-size:14px;background:var(--app-surface);color:var(--app-text);outline:none;transition:border-color .2s}.ybzj-select{cursor:pointer;appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}.ybzj-select:focus,.ybzj-field input:focus{border-color:var(--app-primary, #0ea5e9);box-shadow:0 0 0 3px #0ea5e91a}.ybzj-actions{display:flex;gap:10px;flex-wrap:wrap}.ybzj-btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 24px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;border:none;transition:background .2s;color:#fff}.ybzj-btn-upload{position:relative;background:#22c55e}.ybzj-btn-upload:hover{background:#16a34a}.ybzj-btn-upload input{position:absolute;inset:0;opacity:0;cursor:pointer}.ybzj-btn-encode{background:#0ea5e9}.ybzj-btn-encode:hover{background:#0284c7}.ybzj-btn-decode{background:#6366f1}.ybzj-btn-decode:hover{background:#4f46e5}.ybzj-btn-restore{background:#f59e0b;border:1px solid #f59e0b}.ybzj-btn-restore:hover{background:#d97706}@media(max-width:640px){.ybzj-actions{flex-direction:row}.ybzj-btn{width:calc(50% - 5px)}}