/* Segmented control (Design / Flow / Preview) — đọc như MỘT lựa chọn, không phải 3 nút rời */
.seg { display: inline-flex; background: var(--bg-0); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 2px; gap: 2px; }
.seg-btn {
  border: 0; background: transparent; color: var(--fg-1); cursor: pointer;
  padding: 3px 10px; border-radius: 4px; font-size: 12px; white-space: nowrap;
}
.seg-btn:hover { background: var(--bg-2); color: var(--fg-0); }
.seg-btn.on { background: var(--accent); color: #fff; font-weight: 600; }

/* Rail sections */
.section { border-bottom: 1px solid var(--line-soft); }
.section-head {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 10px;
  font-size: 10px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--fg-2);
  cursor: pointer; user-select: none;
}
.section-head:hover { color: var(--fg-1); }
.section-head .chev { transition: transform .15s; font-size: 9px; }
.section.collapsed .chev { transform: rotate(-90deg); }
.section.collapsed .section-body { display: none; }
.section-body { padding: 0 10px 10px; display: flex; flex-direction: column; gap: 8px; }

/* Screen list */
.screen-item {
  position: relative;
  display: flex; align-items: center; gap: 8px;
  padding: 6px 8px; border-radius: var(--radius-sm);
  cursor: pointer; border: 1px solid transparent;
}
/* Kéo đổi thứ tự: mờ dòng đang kéo, vạch xanh chỉ chỗ nó sẽ rơi vào */
.screen-item.dragging { opacity: .35; }
.screen-item.drop-above::after, .screen-item.drop-below::after {
  content: ''; position: absolute; left: 3px; right: 3px; height: 2px;
  background: var(--accent); border-radius: 2px; pointer-events: none;
}
.screen-item.drop-above::after { top: -2px; }
.screen-item.drop-below::after { bottom: -2px; }
.screen-item:hover { background: var(--bg-2); }
.screen-item.active { background: var(--bg-3); border-color: var(--accent); }
.screen-item .thumb {
  width: 22px; height: 38px; border-radius: 3px; flex: none;
  background: var(--bg-0); border: 1px solid var(--line); overflow: hidden;
}
.screen-item .thumb svg { width: 100%; height: 100%; display: block; }
.screen-item .name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.screen-item .tag { font-size: 9px; color: var(--fg-2); text-transform: uppercase; }
.screen-item .del { opacity: 0; }
.screen-item:hover .del { opacity: .6; }

/* Layers */
.layer-row {
  position: relative;
  display: flex; align-items: center; gap: 6px;
  padding: 4px 6px; border-radius: 4px; cursor: pointer; font-size: 12px;
}
.layer-row:hover { background: var(--bg-2); }
.layer-row.active { background: var(--bg-3); color: #fff; }
.layer-row .icon { color: var(--fg-2); font-size: 10px; width: 12px; }
.layer-row .nm { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
/* Nút ẩn/khoá chỉ hiện khi hover hoặc khi đang bật — danh sách layer đỡ nhiễu hẳn. */
.layer-row .btn { opacity: 0; transition: opacity .12s; }
.layer-row:hover .btn, .layer-row .btn.on { opacity: 1; }
.layer-row.child { padding-left: 18px; }
/* Kéo đổi thứ tự lớp: mờ dòng đang kéo, vạch xanh chỉ chỗ nó sẽ rơi vào */
.layer-row.dragging { opacity: .35; }
.layer-row.drop-above::after, .layer-row.drop-below::after {
  content: ''; position: absolute; left: 3px; right: 3px; height: 2px;
  background: var(--accent); border-radius: 2px; pointer-events: none;
}
.layer-row.drop-above::after { top: -1px; }
.layer-row.drop-below::after { bottom: -1px; }

/* Inspector */
.insp-empty { padding: 24px 12px; text-align: center; color: var(--fg-2); line-height: 1.6; }
.anchor-pad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px; }
.anchor-cell {
  aspect-ratio: 1; border: 1px solid var(--line); border-radius: 3px;
  background: var(--bg-0); cursor: pointer; position: relative;
}
.anchor-cell::after {
  content: ''; position: absolute; width: 5px; height: 5px; background: var(--fg-2); border-radius: 1px;
  top: 50%; left: 50%; transform: translate(-50%, -50%);
}
.anchor-cell:hover { border-color: var(--accent); }
.anchor-cell.on { background: var(--accent); border-color: var(--accent); }
.anchor-cell.on::after { background: #fff; }
/* Glyph picker — a visual list of icons; pick by sight, not by reading names */
.glyph-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 4px; }
.glyph-cell {
  aspect-ratio: 1; display: flex; align-items: center; justify-content: center; padding: 0;
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius-sm);
  color: var(--fg-2); cursor: pointer;
}
.glyph-cell:hover { border-color: var(--accent); background: var(--bg-3); color: var(--fg-0); }
.glyph-cell.on { border-color: var(--accent); background: var(--bg-3); color: var(--fg-0); box-shadow: 0 0 0 1px var(--accent) inset; }
.glyph-cell .glyph-svg { width: 20px; height: 20px; display: block; pointer-events: none; }

.chip-row { display: flex; flex-wrap: wrap; gap: 4px; }
.chip {
  padding: 3px 8px; border-radius: 99px; border: 1px solid var(--line);
  background: var(--bg-2); cursor: pointer; font-size: 11px;
}
.chip:hover { border-color: var(--accent); }
.chip.on { background: var(--accent); border-color: var(--accent); color: #fff; }

/* Card pickers (genre / device / template) */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.pick-card {
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-2);
  padding: 10px; cursor: pointer; display: flex; flex-direction: column; gap: 6px;
}
/* Hover = viền xám nhạt (chỉ trỏ tới); Selected = viền xanh + ring (đã chọn) → phân biệt rõ */
.pick-card:hover { border-color: var(--fg-2); background: var(--bg-3); }
.pick-card.on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; background: var(--bg-3); }
.pick-card .t { font-weight: 600; }
.pick-card .d { font-size: 11px; color: var(--fg-2); line-height: 1.4; }
.pick-card .preview {
  height: 88px; background: var(--bg-0); border-radius: 5px; border: 1px solid var(--line-soft);
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.pick-card .preview svg { height: 100%; width: auto; display: block; }