/*
 * Trang so sánh sản phẩm. Mobile: tên dòng nằm trên, 3 cột giá trị bên dưới. Máy tính (64em): cột tên dòng bên trái.
 * Chỉ dùng biến semantic trong tokens.css.
 */

.cmp { --cmp-cols: repeat(3, minmax(0, 1fr)); padding-bottom: var(--space-7); }
.cmp-head { padding: 0 var(--space-4) var(--space-3); }
.cmp-head h1 { margin: 0 0 6px; }
.cmp-head p { margin: 0; color: var(--color-text-muted); }

/* Tìm để thêm */
.cmp-add { position: relative; padding: 0 var(--space-4) var(--space-3); }
.cmp-search { position: relative; }
.cmp-search .icon { position: absolute; left: 12px; top: 50%; width: 20px; height: 20px; transform: translateY(-50%); color: var(--color-text-muted); pointer-events: none; }
.cmp-search input {
  width: 100%;
  min-height: var(--tap-min);
  padding: 0 var(--space-3) 0 40px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  font-size: 1rem;
}
.cmp-search input:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 1px; border-color: var(--color-focus); }
.cmp-found {
  position: absolute;
  left: var(--space-4); right: var(--space-4); top: calc(var(--tap-min) + 4px);
  z-index: var(--z-sticky);
  margin: 0;
  padding: var(--space-1) 0;
  list-style: none;
  max-height: 360px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-menu);
}
.cmp-found-item { padding: var(--space-2) var(--space-3); display: grid; grid-template-columns: 48px minmax(0, 1fr) auto; align-items: center; gap: var(--space-2); }
.cmp-found-item + .cmp-found-item { border-top: 1px solid var(--color-border); }
.cmp-found-img { width: 48px; height: 48px; display: block; }
.cmp-found-img img { width: 100%; height: 100%; object-fit: contain; }
.cmp-found-name { font-size: var(--text-sm); line-height: var(--leading-tight); display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.cmp-found-name small { color: var(--color-price); font-weight: var(--weight-strong); }
.cmp-found-none { padding: var(--space-3); font-size: var(--text-sm); color: var(--color-text-muted); }

/* Công cụ */
.cmp-tools { padding: 0 var(--space-4) var(--space-3); display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-1) var(--space-3); font-size: var(--text-sm); }
.cmp-diff { min-height: var(--tap-min); margin-right: auto; display: inline-flex; align-items: center; gap: var(--space-2); font-weight: var(--weight-strong); cursor: pointer; }
.cmp-diff input { width: 20px; height: 20px; margin: 0; accent-color: var(--color-action); }
.cmp-link { min-height: var(--tap-min); padding: 0; border: 0; background: none; color: var(--color-link); font: inherit; display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
.cmp-link .icon { width: 18px; height: 18px; }
.cmp-mix { margin: 0 var(--space-4) var(--space-3); padding: var(--space-2) var(--space-3); border-radius: var(--radius-sm); background: var(--color-warning-bg); font-size: var(--text-sm); display: flex; gap: var(--space-2); }
.cmp-mix .icon { width: 18px; height: 18px; flex: none; color: var(--color-warning); }

/* Bảng */
.cmp-table { background: var(--color-surface); }
.cmp-table:empty { display: none; }
.cmp-loading, .cmp-nospec { margin: 0; padding: var(--space-5) var(--space-4); text-align: center; color: var(--color-text-muted); }
.cmp-row { display: grid; grid-template-columns: var(--cmp-cols); border-bottom: 1px solid var(--color-border); }
.cmp-lab { grid-column: 1 / -1; padding: var(--space-2) var(--space-3) 0; font-size: var(--text-xs); font-weight: var(--weight-strong); color: var(--color-text-muted); }
.cmp-cell { min-width: 0; padding: var(--space-1) var(--space-2) var(--space-2); font-size: var(--text-xs); line-height: 1.45; overflow-wrap: anywhere; }
.cmp-cell + .cmp-cell { border-left: 1px solid var(--color-border); }
.cmp-na { color: var(--color-text-muted); }
.cmp-row--head .cmp-lab, .cmp-row--buy .cmp-lab { display: none; }
.cmp-row--head { position: sticky; top: var(--cmp-top, 0px); z-index: 2; background: var(--color-surface); box-shadow: 0 1px 0 var(--color-border); }
.cmp-row--head .cmp-cell { position: relative; padding-top: var(--space-2); }
.cmp-card { color: var(--color-text); text-decoration: none; display: flex; flex-direction: column; gap: var(--space-1); }
.cmp-img { width: 56px; height: 56px; flex: none; display: block; }
.cmp-img img { width: 100%; height: 100%; object-fit: contain; }
.cmp-name { font-size: var(--text-xs); font-weight: var(--weight-strong); line-height: var(--leading-tight); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.cmp-price { margin: 4px 0 0; display: flex; flex-wrap: wrap; align-items: baseline; gap: 0 6px; }
.cmp-price-now { color: var(--color-price); font-weight: var(--weight-strong); }
.cmp-price-now.is-muted { color: var(--color-text-muted); font-weight: var(--weight-regular); }
.cmp-price s { font-size: var(--text-xs); color: var(--color-text-muted); }
.cmp-rm {
  position: absolute;
  top: 2px; right: 2px;
  width: 32px; height: 32px;
  border: 0;
  border-radius: var(--radius-full);
  background: var(--color-surface-alt);
  color: var(--color-text);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}
.cmp-slot {
  width: 100%;
  min-height: 120px;
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
  background: none;
  color: var(--color-text-muted);
  font: inherit;
  font-size: var(--text-xs);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
}
.cmp-slot span { font-size: 1.5rem; line-height: 1; }
.cmp-ok { color: var(--color-success); font-weight: var(--weight-strong); }
.cmp-warn { color: var(--color-warning); font-weight: var(--weight-strong); }
.cmp-sec-h { margin: 0; padding: var(--space-3) var(--space-3) var(--space-2); background: var(--color-surface-sunken); font-size: var(--text-sm); font-weight: var(--weight-strong); }
.cmp-row--buy { border-bottom: 0; }
.cmp-row--buy .cmp-cell { padding-top: var(--space-3); padding-bottom: var(--space-3); display: flex; flex-direction: column; gap: var(--space-2); }
.cmp-row--buy form { display: contents; }
.cmp-row--buy .btn { width: 100%; padding-left: var(--space-1); padding-right: var(--space-1); }
.cmp.is-diff .cmp-row.is-same, .cmp.is-diff .cmp-sec.is-same { display: none; }

/* Chưa có sản phẩm */
.cmp-empty { margin: 0 var(--space-4); padding: var(--space-6) var(--space-4); border-radius: var(--radius-md); background: var(--color-surface); text-align: center; display: flex; flex-direction: column; align-items: center; gap: var(--space-2); }
.cmp-empty[hidden] { display: none; }
.cmp-empty > .icon { width: 40px; height: 40px; color: var(--color-text-muted); }
.cmp-empty p { margin: 0; color: var(--color-text-muted); }
.cmp-empty .cmp-empty-h { font-weight: var(--weight-strong); color: var(--color-text); }

@media (min-width: 64em) {
  .cmp { --cmp-cols: 200px repeat(3, minmax(0, 1fr)); max-width: var(--page-max); margin: 0 auto; padding-left: var(--space-4); padding-right: var(--space-4); }
  .cmp-head { padding: var(--space-2) 0 var(--space-4); }
  .cmp-head h1 { font-size: var(--text-2xl); }
  .cmp-add { max-width: 560px; padding: 0 0 var(--space-3); }
  .cmp-found { left: 0; right: 0; }
  .cmp-tools { padding: 0 0 var(--space-3); }
  .cmp-mix { margin: 0 0 var(--space-3); }
  .cmp-table { border-radius: var(--radius-md); }
  .cmp-lab { grid-column: auto; padding: var(--space-2) var(--space-3); font-size: var(--text-sm); }
  .cmp-cell { padding: var(--space-2) var(--space-3); font-size: var(--text-sm); border-left: 1px solid var(--color-border); }
  .cmp-row--head .cmp-lab, .cmp-row--buy .cmp-lab { display: block; }
  .cmp-row--head .cmp-cell { padding-top: var(--space-3); }
  .cmp-card { flex-direction: row; align-items: flex-start; gap: var(--space-3); padding-right: 32px; }
  .cmp-img { width: 72px; height: 72px; }
  .cmp-price { padding-left: calc(72px + var(--space-3)); }
  .cmp-name { font-size: var(--text-sm); }
  .cmp-row--buy .cmp-cell { flex-direction: row; }
  .cmp-row--buy .btn { width: auto; flex: 1; }
  .cmp-empty { margin: 0; }
}