.dropzone {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 30px 20px; border: 2px dashed var(--border); border-radius: 14px;
  color: var(--muted); cursor: pointer; text-align: center;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone:hover, .dropzone.drag { border-color: var(--primary); background: var(--primary-soft); }
.dz-icon { font-size: 2rem; }
.sr-file { position: absolute; width: 1px; height: 1px; opacity: 0; overflow: hidden; clip: rect(0 0 0 0); }
#preview { display: block; max-width: 100%; max-height: 260px; margin: 6px auto 14px; border-radius: 10px; border: 1px solid var(--border); }
input[type="range"] { width: 100%; accent-color: var(--primary); }