main { max-width: 1300px; margin: 0 auto; padding: 28px 32px 72px; display: flex; flex-direction: column; gap: 20px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 22px; }
.panel h2 {
  font-size: 12.5px; text-transform: uppercase; letter-spacing: .05em;
  color: var(--muted); font-weight: 700; margin: 0 0 14px;
}
.card-description { font-size: 12.5px; color: var(--muted); margin: -4px 0 14px; line-height: 1.5; }

input[type="file"] { font-size: 13px; }

.file-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.file-chip {
  font-size: 12.5px; padding: 6px 12px; border: 1px solid var(--line);
  border-radius: 14px; background: var(--bg);
}
.file-chip-count { color: var(--muted); }

.log { font-size: 12.5px; color: var(--muted); margin-top: 12px; white-space: pre-wrap; }
.log.log-error { color: #b42318; }

.matching-table { display: flex; flex-direction: column; gap: 2px; overflow-x: auto; }
.match-row {
  display: grid;
  gap: 10px;
  align-items: center;
  padding: 6px 4px;
  border-bottom: 1px solid var(--line);
}
.match-header-row {
  font-size: 11px; text-transform: uppercase; letter-spacing: .04em;
  color: var(--muted); font-weight: 700; border-bottom: 2px solid var(--line);
}
.match-label { font-size: 13px; font-weight: 600; padding-right: 8px; }
.match-select {
  font-size: 12.5px; padding: 6px 8px; border: 1px solid var(--line);
  border-radius: 6px; background: #fff; max-width: 260px;
}

button.primary {
  padding: 11px 20px; border: 1px solid var(--primary); border-radius: 6px;
  background: var(--primary); color: #fff; font-size: 13.5px; font-weight: 600; cursor: pointer;
}
button.primary:hover { background: var(--primary-hover); }
#downloadBtn {
  padding: 10px 18px; margin-top: 10px; border: 1px solid var(--line); border-radius: 6px;
  background: #fff; font-size: 13px; font-weight: 600; cursor: pointer;
}
#downloadBtn:hover:not(:disabled) { background: #f4f5f7; }
#downloadBtn:disabled { opacity: .5; cursor: not-allowed; }
.preview-info { font-size: 13px; color: var(--muted); margin: 12px 0; }

/* ---------- mode tabs ---------- */
.mode-tabs { display: flex; gap: 4px; margin: 4px 0 -1px; }
.mode-tab {
  padding: 10px 22px; font-size: 13.5px; font-weight: 600;
  border: 1px solid var(--line); border-bottom: none; border-radius: 8px 8px 0 0;
  background: #eceef1; color: var(--muted); cursor: pointer;
}
.mode-tab.active { background: var(--panel); color: var(--ink); }
.mode-tab:hover:not(.active) { background: #e2e4e8; }
.mode-panel { display: flex; flex-direction: column; gap: 20px; }

/* ---------- key table (Merger mode) ---------- */
.key-table { display: flex; flex-direction: column; gap: 2px; }
.key-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 12px;
  align-items: center;
  padding: 8px 4px;
  border-bottom: 1px solid var(--line);
}
.key-header-row {
  font-size: 11px; text-transform: uppercase; letter-spacing: .04em;
  color: var(--muted); font-weight: 700; border-bottom: 2px solid var(--line);
}
.key-label { font-size: 13px; font-weight: 600; }
.key-select {
  font-size: 12.5px; padding: 6px 8px; border: 1px solid var(--line);
  border-radius: 6px; background: #fff; max-width: 320px;
}