/* ─── Upload Section ─────────────────────────────────────────────── */
.upload-section {
  max-width: 980px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.01));
  box-shadow: var(--shadow);
}

.upload-dropzone {
  border: 2px dashed rgba(184, 197, 218, 0.3);
  border-radius: var(--radius-xl);
  padding: 40px 28px;
  text-align: center;
  cursor: pointer;
  transition: 0.2s ease;
  position: relative;
  margin-bottom: 22px;
  background: radial-gradient(circle at 10% 0%, rgba(76, 156, 255, 0.14), rgba(76, 156, 255, 0) 45%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
}
.upload-dropzone:hover,
.upload-dropzone.drag-over {
  border-color: rgba(76, 156, 255, 0.72);
  background: radial-gradient(circle at 10% 0%, rgba(76, 156, 255, 0.22), rgba(76, 156, 255, 0) 55%),
    rgba(255, 255, 255, 0.04);
}
.upload-dropzone input[type="file"] {
  position: absolute; inset: 0; opacity: 0;
  cursor: pointer; width: 100%; height: 100%;
}

.upload-icon {
  font-size: 36px; margin-bottom: 10px; display: block;
  color: var(--text-muted);
}
.upload-hint {
  font-size: 15px; color: var(--text-secondary); margin-bottom: 4px;
}
.upload-hint strong { color: var(--text-primary); }
.upload-hint-sub {
  font-size: 12px; color: var(--text-muted); letter-spacing: 0.05em; text-transform: uppercase;
}

.upload-file-info {
  display: none;
  margin-top: 12px;
  padding: 12px 16px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: left;
  gap: 10px;
  align-items: flex-start;
}
.upload-file-info.visible { display: flex; }

.upload-file-icon {
  font-size: 24px; flex-shrink: 0;
}
.upload-file-details { flex: 1; min-width: 0; }
.upload-file-name {
  font-weight: 500; font-size: 14px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.upload-file-meta {
  font-size: 12px; color: var(--text-secondary); margin-top: 2px;
}

.upload-error {
  margin-top: 10px;
  padding: 10px 14px;
  background: var(--error-bg);
  border: 1px solid rgba(255, 109, 128, 0.4);
  border-radius: var(--radius);
  color: #ffdbe1;
  font-size: 13px;
  display: none;
}
.upload-error.visible { display: block; }

.upload-description-wrap {
  display: none;
  margin-top: 12px;
}
.upload-description-wrap.visible { display: block; }

.upload-progress-wrap {
  margin-top: 14px;
  display: none;
}
.upload-progress-wrap.visible { display: block; }

.upload-progress-label {
  display: flex; justify-content: space-between;
  font-size: 12px; color: var(--text-secondary); margin-bottom: 6px;
}

.upload-btn-row {
  display: none;
  margin-top: 14px;
  gap: 8px;
  align-items: center;
}
.upload-btn-row.visible { display: flex; }

.upload-status {
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-secondary);
  min-height: 20px;
}
.upload-status.success { color: var(--success); }
.upload-status.error   { color: var(--error); }

/* ─── Supported formats hint ────────────────────────────────────── */
.format-hint {
  display: flex; gap: 6px; flex-wrap: wrap;
  margin-top: 14px; justify-content: center;
}
.format-pill {
  padding: 3px 8px; border-radius: 99px;
  font-size: 10px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.12);
}