/* PDF Merger — .pm-* namespace */

.pm-tool-wrap {
  max-width: 1060px;
  margin: 0 auto;
  margin: 1.5rem 0;
}

/* ── Drop Zone ────────────────────────────── */
.pm-drop-zone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  background: var(--surface);
}

.pm-drop-zone:hover,
.pm-drop-zone:focus-visible {
  border-color: var(--primary);
  background: rgba(var(--primary-rgb), 0.04);
  outline: none;
}

.pm-drop-zone.pm-drag-over {
  border-color: var(--primary);
  background: rgba(var(--primary-rgb), 0.08);
}

.pm-drop-icon {
  color: var(--primary);
  margin-bottom: 1rem;
}

.pm-drop-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.5rem;
}

.pm-drop-sub {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
}

.pm-browse-link {
  background: none;
  border: none;
  color: var(--primary);
  font-size: inherit;
  cursor: pointer;
  padding: 0;
  font-weight: 500;
  text-decoration: underline;
}

.pm-browse-link:hover { color: var(--primary-dark); }

.pm-file-input-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

/* ── Files Section ────────────────────────── */
.pm-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  gap: 1rem;
}

.pm-list-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}

.pm-add-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  min-height: 44px;
}

.pm-add-more-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.pm-add-more-btn:disabled { opacity: 0.5; pointer-events: none; }

/* ── File List ───────────────────────────── */
.pm-file-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.pm-file-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 0.75rem 0.75rem 0.5rem;
  transition: box-shadow 0.15s, opacity 0.15s, border-color 0.15s;
  cursor: default;
}

.pm-file-item.pm-dragging {
  opacity: 0.4;
}

.pm-file-item.pm-drop-target {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.15);
}

.pm-drag-handle {
  color: var(--text-muted);
  cursor: grab;
  padding: 0.25rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  border-radius: 4px;
  transition: color 0.15s;
  min-width: 30px;
  justify-content: center;
  min-height: 30px;
}

.pm-drag-handle:hover { color: var(--primary); }
.pm-drag-handle:active { cursor: grabbing; }

.pm-file-icon {
  color: var(--danger);
  flex-shrink: 0;
  display: flex;
}

.pm-file-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.pm-file-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pm-file-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.pm-pages-loading { color: var(--text-muted); font-style: italic; }
.pm-pages-err { color: var(--warning); }

.pm-remove-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.35rem;
  border-radius: 4px;
  display: flex;
  align-items: center;
  flex-shrink: 0;
  transition: color 0.15s, background 0.15s;
  min-width: 30px;
  min-height: 30px;
  justify-content: center;
}

.pm-remove-btn:hover {
  color: var(--danger);
  background: rgba(239, 68, 68, 0.08);
}

.pm-remove-btn:disabled { opacity: 0.4; pointer-events: none; }

/* ── Output Filename ─────────────────────── */
.pm-filename-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.pm-filename-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  flex-shrink: 0;
}

.pm-filename-input-wrap {
  display: flex;
  align-items: center;
  gap: 0;
  flex: 1;
  min-width: 180px;
}

.pm-filename-input {
  border-radius: 6px 0 0 6px !important;
  border-right: none !important;
  min-width: 0;
  flex: 1;
}

.pm-filename-ext {
  display: flex;
  align-items: center;
  padding: 0 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0 6px 6px 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  height: 44px;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Actions ─────────────────────────────── */
.pm-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.pm-merge-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  font-size: 1rem;
  font-weight: 600;
}

.pm-merge-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.pm-clear-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.875rem;
  cursor: pointer;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
  min-height: 44px;
}

.pm-clear-btn:hover {
  color: var(--danger);
  background: rgba(239, 68, 68, 0.06);
}

.pm-clear-btn:disabled { opacity: 0.4; pointer-events: none; }

/* ── Progress ─────────────────────────────── */
.pm-progress-wrap {
  margin-top: 1.5rem;
  text-align: center;
}

.pm-progress-track {
  background: var(--border);
  border-radius: 99px;
  height: 10px;
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.pm-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 99px;
  width: 0%;
  transition: width 0.3s ease;
}

.pm-progress-text {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
}

/* ── Result ──────────────────────────────── */
.pm-result {
  margin-top: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--success);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.pm-result-icon {
  color: var(--success);
  flex-shrink: 0;
}

.pm-result-text {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.pm-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  min-height: 44px;
  text-decoration: none;
}

.pm-merge-again-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.875rem;
  cursor: pointer;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  transition: color 0.15s;
}

.pm-merge-again-btn:hover { color: var(--text); }

/* ── Status messages ─────────────────────── */
.pm-status-wrap {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.pm-status {
  padding: 0.6rem 1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  animation: tool-status-in 0.2s ease;
}

.pm-status-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.pm-status-error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.pm-status-info {
  background: rgba(var(--primary-rgb), 0.08);
  color: var(--primary);
  border: 1px solid rgba(var(--primary-rgb), 0.2);
}

.pm-pwd-input {
  margin-top: 5px;
  width: 100%;
  box-sizing: border-box;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 0.8rem;
  outline: none;
  background: var(--surface);
  color: var(--text);
}

.pm-pwd-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.12);
}



/* ── Dark mode overrides ─────────────────── */
[data-theme="dark"] .pm-drop-zone {
  background: rgba(255, 255, 255, 0.02);
}

[data-theme="dark"] .pm-drop-zone:hover,
[data-theme="dark"] .pm-drop-zone:focus-visible,
[data-theme="dark"] .pm-drop-zone.pm-drag-over {
  background: rgba(var(--primary-rgb), 0.06);
}

[data-theme="dark"] .pm-filename-ext {
  background: rgba(255, 255, 255, 0.04);
}

/* ── Mobile ──────────────────────────────── */
@media (max-width: 640px) {
  .pm-drop-zone { padding: 2rem 1rem; }
  .pm-file-item { gap: 0.5rem; padding: 0.65rem 0.5rem; }
  .pm-file-name { font-size: 0.82rem; }
  .pm-filename-row { flex-direction: column; align-items: stretch; gap: 0.5rem; }
  .pm-filename-label { margin-bottom: 0; }
  .pm-actions { flex-direction: column; align-items: stretch; }
  .pm-merge-btn, .pm-clear-btn { width: 100%; justify-content: center; }
  .pm-list-header { flex-wrap: wrap; }
}