/* enhancements.css — toast, skeleton, sortable, heatmap, mini-bar, kpi-spark,
   search-combo, empty-state, badge, export button, perf-grid.
   Updated: 2026-07-10 (responsive tuning) */

.toast-container {
  position: fixed; bottom: 48px; right: 20px; z-index: var(--z-toast);
  display: flex; flex-direction: column; gap: 8px;
  pointer-events: none; max-width: 340px;
}

.toast {
  pointer-events: all; background: var(--surface);
  border: 1px solid var(--border-hi); border-radius: 4px;
  padding: 10px 14px; display: flex; align-items: flex-start; gap: 10px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  animation: toast-in 180ms ease-out;
}
.toast.removing { animation: toast-out 140ms ease-in forwards; }

.toast-icon { font-size: 14px; line-height: 1.4; flex-shrink: 0; }
.toast-body { flex: 1; min-width: 0; }
.toast-title {
  font-family: var(--mono); font-size: var(--fs-xs); font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text-dim); margin-bottom: 2px;
}
.toast-msg { font-size: var(--fs-sm); color: var(--text); line-height: 1.4; }

.toast-close {
  background: transparent; border: none; color: var(--muted);
  cursor: pointer; font-size: 14px; line-height: 1; padding: 2px 4px;
  border-radius: 2px; transition: color 120ms ease-out;
}
.toast-close:hover { color: var(--text); }

@keyframes toast-in { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toast-out { to { opacity: 0; transform: translateX(20px); } }

.skeleton-table-row {
  display: flex; gap: 12px; padding: 6px 8px;
  border-bottom: 1px solid var(--border);
}
.skeleton-cell { height: 14px; border-radius: 2px; flex: 1; }

th.sortable { cursor: pointer; user-select: none; transition: color 120ms ease-out; }
th.sortable:hover { color: var(--text); }
th.sortable .sort-arrow {
  display: inline-block; margin-left: 4px; font-size: 8px;
  opacity: 0.4; transition: opacity 120ms ease-out;
}
th.sortable.asc .sort-arrow, th.sortable.desc .sort-arrow { opacity: 1; color: var(--accent); }
th.sortable.asc .sort-arrow { transform: rotate(180deg); }

/* Heatmap grid */
.heatmap { display: grid; gap: 2px; }
.heatmap-cell {
  font-family: var(--mono); font-size: 9px; font-weight: 500;
  letter-spacing: 0.04em; padding: 4px 6px; text-align: center;
  border-radius: 2px; white-space: nowrap;
  transition: opacity 120ms ease-out;
}
.heatmap-cell:hover { opacity: 0.8; }
.heatmap-label {
  font-family: var(--mono); font-size: 10px; color: var(--muted);
  letter-spacing: 0.1em; text-transform: uppercase; align-self: center;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.heatmap-row { display: grid; grid-template-columns: 120px 1fr 1fr; gap: 2px; }
.heatmap-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.heatmap-cell[data-heat="pos"] { background: var(--pos-bg); color: var(--pos); }
.heatmap-cell[data-heat="neg"] { background: var(--neg-bg); color: var(--neg); }
.heatmap-cell[data-heat="neutral"] {
  background: transparent; color: var(--muted); border: 1px solid var(--border);
}

/* Mini bar charts */
.mini-bar { display: inline-flex; align-items: flex-end; gap: 1px; height: 16px; }
.mini-bar .bar { width: 4px; border-radius: 1px; transition: opacity 120ms ease-out; }
.mini-bar .bar:hover { opacity: 0.7; }

/* KPI spark */
.kpi-spark { display: block; width: 100%; height: 18px; margin-top: 4px; }

/* Regime banner */
.regime-banner {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 16px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 4px; margin-bottom: 14px;
}
.regime-dot { width: 8px; height: 8px; border-radius: 50%; }
.regime-label {
  font-family: var(--mono); font-size: var(--fs-xs); letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted);
}
.regime-name { font-family: var(--sans-cond); font-size: var(--fs-md); font-weight: 700; }
.regime-meta {
  margin-left: auto; font-family: var(--mono); font-size: var(--fs-xs);
  color: var(--text-dim); letter-spacing: 0.04em;
}

/* Search combo */
.search-combo { position: relative; min-width: 200px; }
.search-combo input {
  width: 100%; background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 2px; color: var(--text); font-family: var(--mono);
  font-size: var(--fs-sm); padding: 7px 9px; outline: none;
  transition: border-color 130ms ease-out;
}
.search-combo input:focus { border-color: var(--accent-dim); }
.search-combo input::placeholder { color: var(--muted); }

/* Empty state */
.empty-state {
  text-align: center; padding: 40px 20px; font-family: var(--mono);
}
.empty-state-icon { font-size: 24px; margin-bottom: 10px; opacity: 0.4; }
.empty-state-title {
  font-size: var(--fs-sm); color: var(--text-dim); margin-bottom: 4px;
  font-weight: 500; letter-spacing: 0.06em;
}
.empty-state-sub { font-size: var(--fs-sm); color: var(--muted); line-height: 1.5; }

/* Badge / tag refinements */
.badge {
  display: inline-block; font-family: var(--mono); font-size: var(--fs-xs);
  font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 3px 7px; border-radius: 3px; background: var(--surface-2);
  color: var(--text-dim); min-height: 20px;
}
.badge.accent { background: var(--accent-bg); color: var(--accent); }

/* Export button */
.btn-export {
  background: transparent; color: var(--text-dim); font-family: var(--mono);
  font-size: var(--fs-xs); letter-spacing: 0.12em; text-transform: uppercase;
  border: 1px solid var(--border); border-radius: 3px; padding: 5px 10px;
  cursor: pointer;
  transition: color 120ms ease-out, border-color 120ms ease-out;
}
.btn-export:hover { color: var(--accent); border-color: var(--accent-dim); }

/* Indicator strip */
.indicator-strip {
  display: flex; flex-wrap: wrap; gap: 16px; padding: 10px 14px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 4px; font-family: var(--mono); font-size: var(--fs-xs);
}
.indicator-strip .item { display: flex; align-items: center; gap: 5px; }
.indicator-strip .label { color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase; }
.indicator-strip .val { font-weight: 500; }

/* Performance summary grid */
.perf-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }

@media (max-width: 1200px) { .perf-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 720px) {
  .perf-grid { grid-template-columns: repeat(2, 1fr); }
  .regime-banner { flex-wrap: wrap; gap: 6px; padding: 8px 10px; }
  .regime-meta { margin-left: 0; width: 100%; }
  .indicator-strip { gap: 10px; }
}
@media (max-width: 380px) { .perf-grid { grid-template-columns: 1fr; } }