/* ============================================================
   SPLIT PANELS (CODE VS CODE)
   ============================================================ */
.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media(min-width: 900px) {
  .split {
    grid-template-columns: 1fr 1fr;
  }
}

.panel label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 8px;
  color: var(--navy);
  font-weight: 600;
  font-size: 14px;
}

.panel label::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--grad-green);
}

textarea {
  width: 100%;
  min-height: 260px;
  resize: vertical;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  padding: 16px;
  border-radius: var(--radius-sm);
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  color: var(--text);
  line-height: 1.6;
  transition: all var(--transition);
}

textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.12);
  background: #fff;
}

textarea::placeholder {
  color: var(--text-muted);
  font-style: italic;
}

/* ============================================================
   ANALYSIS PARAMETERS
   ============================================================ */
.params label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}

.params input[type="number"] {
  width: 64px;
  padding: 8px 10px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  text-align: center;
  transition: all var(--transition);
}

.params input[type="number"]:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.12);
}

/* ============================================================
   DROPZONE (FILE VS FILE / BATCH)
   ============================================================ */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px 24px;
  text-align: center;
  background: var(--surface-alt);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.dropzone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(76, 175, 80, 0.03), rgba(30, 58, 95, 0.03));
  opacity: 0;
  transition: opacity var(--transition);
}

.dropzone:hover,
.dropzone.dragover {
  border-color: var(--green);
  background: rgba(76, 175, 80, 0.02);
}

.dropzone:hover::before,
.dropzone.dragover::before {
  opacity: 1;
}

.dz-icon {
  font-size: 40px;
  margin-bottom: 12px;
  line-height: 1;
  color: var(--green);
  display: flex;
  align-items: center;
  justify-content: center;
}

.dz-icon svg {
  width: 48px;
  height: 48px;
  color: var(--green);
}

.dropzone p {
  color: var(--text-secondary);
  margin: 4px 0;
  font-size: 15px;
}

.dropzone .muted {
  font-size: 13px;
  color: var(--text-muted);
}

/* ============================================================
   FILE LIST
   ============================================================ */
.filelist {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

.file {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 14px;
  transition: all var(--transition);
  animation: fadeInUp 0.3s ease-out;
}

.file:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-sm);
}

.file span:first-child {
  font-weight: 600;
  color: var(--text);
}

.badge {
  font-size: 12px;
  background: linear-gradient(135deg, rgba(76, 175, 80, 0.08), rgba(30, 58, 95, 0.05));
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--text-secondary);
  font-weight: 600;
}