/* ═══════════════════════════════════════════
   MERGE PDF — FUTURISTIC GLASS UI
   ═══════════════════════════════════════════ */

/* ── File List ── */
.mp-file-list {
  background: var(--t-bg); border: 1px solid var(--t-border-glass);
  border-radius: var(--t-radius); overflow: hidden;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  animation: toolSlideIn 0.3s cubic-bezier(0.16,1,0.3,1);
}
.mp-file-list-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.6rem 0.9rem; background: var(--t-accent-light);
  border-bottom: 1px solid var(--t-border-glass);
}
.mp-file-list-label { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--t-accent); }
.mp-file-list-count { font-family: var(--t-mono); font-size: 0.7rem; font-weight: 700; color: var(--t-accent); background: rgba(255,107,74,0.12); padding: 0.2rem 0.6rem; border-radius: 100px; }
.mp-file-items { max-height: 300px; overflow-y: auto; }
.mp-file-item {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.55rem 0.75rem; border-bottom: 1px solid var(--t-border-glass);
  cursor: grab; transition: background 0.15s, border-color 0.15s; user-select: none;
}
.mp-file-item:last-child { border-bottom: none; }
.mp-file-item:hover { background: var(--t-accent-light); }
.mp-file-item.dragging { opacity: 0.45; background: var(--t-accent-light); }
.mp-file-item.drag-over { border-top: 2px solid var(--t-accent); }
.mp-file-item-icon { font-size: 1.1rem; flex-shrink: 0; opacity: 0.7; }
.mp-file-item-info { flex: 1; min-width: 0; }
.mp-file-item-name {
  font-size: 0.82rem; font-weight: 500; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.mp-file-item-meta { font-size: 0.68rem; color: var(--text-tertiary); font-family: var(--t-mono); }
.mp-file-item-drag { color: var(--text-tertiary); font-size: 0.8rem; cursor: grab; flex-shrink: 0; padding: 0 0.15rem; opacity: 0.5; }
.mp-file-item-remove {
  background: none; border: 1px solid transparent; cursor: pointer;
  font-size: 0.8rem; color: var(--text-tertiary); padding: 0.25rem 0.35rem;
  border-radius: 6px; transition: all 0.15s; flex-shrink: 0;
}
.mp-file-item-remove:hover { color: var(--t-red); border-color: var(--t-red); background: var(--t-red-light); }
.mp-file-list-actions {
  display: flex; gap: 0.5rem; padding: 0.55rem 0.75rem;
  background: var(--t-accent-light); border-top: 1px solid var(--t-border-glass);
}

/* ── RIGHT: Config Column ── */
.mp-merge-info {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 0.5rem; border-bottom: 1px solid var(--t-border-glass);
}
.mp-merge-info-label { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-tertiary); }
.mp-merge-info-count { font-family: var(--t-mono); font-size: 0.85rem; font-weight: 700; color: var(--t-accent); }
.mp-action-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.75rem 1.6rem; border: 1.5px solid var(--t-border); border-radius: 100px;
  background: var(--t-bg); color: var(--text-secondary);
  font-family: var(--t-font); font-size: 0.88rem; font-weight: 700;
  cursor: pointer; transition: all 0.25s cubic-bezier(0.16,1,0.3,1); white-space: nowrap;
}
.mp-action-btn:hover:not(:disabled) {
  border-color: var(--t-accent); color: var(--t-accent);
  background: var(--t-accent-light); transform: translateY(-1px);
  box-shadow: 0 4px 18px var(--t-accent-glow);
}
.mp-action-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.mp-action-btn.primary {
  width: 100%; background: linear-gradient(135deg, var(--t-accent), var(--t-accent-2));
  color: #fff; border-color: transparent; box-shadow: 0 4px 24px var(--t-accent-glow);
}
.mp-action-btn.download-all {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff; border-color: transparent; box-shadow: 0 4px 24px rgba(16,185,129,0.3);
}