/* CSV Merge page - emerald/green theme */
:root {
  --merge-primary: #059669;
  --merge-primary-hover: #047857;
  --merge-primary-muted: rgba(5, 150, 105, 0.10);
}

.merge-layout {
  max-width: 960px;
  margin: 0 auto;
}

.merge__badge {
  display: inline-block;
  margin: 0 0 8px;
  padding: 6px 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--merge-primary);
  background: var(--merge-primary-muted);
  border-radius: 9999px;
}

/* ── Upload ── */
.merge__upload-section {
  margin-bottom: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.merge__upload {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  background: var(--bg);
}
.merge__upload:hover,
.merge__upload--dragover {
  border-color: var(--merge-primary);
  background: var(--merge-primary-muted);
}
.merge__upload input[type="file"] {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}
.merge__upload-icon {
  display: inline-flex;
  width: 44px; height: 44px;
  margin-bottom: 10px;
  color: var(--merge-primary);
}
.merge__upload-icon svg { width: 100%; height: 100%; }
.merge__upload-title {
  display: block;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}
.merge__upload-hint { font-size: 0.9rem; color: var(--text-muted); }

/* ── File list ── */
.merge__file-list-section {
  margin-top: 20px;
}
.merge__file-list-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.merge__file-list-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}
.merge__file-count {
  font-size: 0.82rem;
  color: var(--merge-primary);
  background: var(--merge-primary-muted);
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 600;
}
.merge__file-list {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.merge__file-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
}
.merge__file-name {
  flex: 1;
  font-weight: 500;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.merge__file-size { color: var(--text-muted); font-size: 0.82rem; white-space: nowrap; }
.merge__file-remove {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1;
  padding: 2px 4px;
  border-radius: 4px;
  transition: color 0.15s, background 0.15s;
}
.merge__file-remove:hover { color: #dc2626; background: rgba(220,38,38,0.08); }

/* ── Options ── */
.merge__options {
  margin-top: 18px;
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 10px;
}
.merge__options label {
  font-size: 0.9rem;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
}
.merge__options input[type="checkbox"] { width: 15px; height: 15px; accent-color: var(--merge-primary); }

/* ── Start button ── */
.merge__start-wrap {
  margin-top: 16px;
  display: flex;
  justify-content: flex-end;
}
.merge__btn-start {
  padding: 10px 24px;
  background: var(--merge-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.merge__btn-start:hover { background: var(--merge-primary-hover); }
.merge__btn-start:disabled { opacity: 0.5; cursor: not-allowed; }

/* ── Result section ── */
.merge__result-section {
  display: none;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.merge__result-section.is-visible { display: block; }

.merge__result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}
.merge__result-title { font-size: 1rem; font-weight: 600; color: var(--text); }
.merge__result-summary {
  font-size: 0.9rem;
  color: var(--merge-primary);
  background: var(--merge-primary-muted);
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 600;
}

.merge__preview-wrap {
  overflow-x: auto;
  margin-bottom: 20px;
  max-height: 360px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.merge__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}
.merge__table th,
.merge__table td {
  padding: 6px 10px;
  border: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}
.merge__table th {
  background: var(--bg);
  font-weight: 600;
  color: var(--text);
  position: sticky;
  top: 0;
  z-index: 1;
}
.merge__table td:first-child,
.merge__table th:first-child { color: var(--text-muted); width: 40px; text-align: center; }

.merge__download-wrap { display: flex; justify-content: flex-end; }
.merge__btn-download {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--merge-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.merge__btn-download:hover { background: var(--merge-primary-hover); }
.merge__btn-download svg { width: 18px; height: 18px; }