/**
 * Universal Search Overlay CSS
 * Full-screen spotlight search with category filters, predictive results, and dark mode.
 *
 * @package Trippy's Food Corporation ERP
 * @version 1.0
 */

/* ─── CSS Variables ─── */
:root {
  --us-overlay-bg: rgba(15,23,42,0.55);
  --us-panel-bg-rgb: 255, 255, 255;
  --us-panel-bg: rgba(var(--us-panel-bg-rgb), 0.97);
  --us-text: #0f172a;
  --us-text-muted: #64748b;
  --us-border: rgba(148,163,184,0.22);
  --us-accent: #dc2626;
  --us-accent-glow: rgba(220,38,38,0.18);
  --us-surface: #ffffff;
  --us-category-chip-bg: #f1f5f9;
  --us-category-chip-active-bg: #dc2626;
  --us-category-chip-active-text: #ffffff;
  --us-group-label-text: #475569;
  --us-row-hover: rgba(241,245,249,0.8);
  --us-shadow: 0 24px 60px rgba(15,23,42,0.18);
  --us-radius: 1.1rem;
  --us-radius-pill: 999px;
  --us-blur: 24px;
  --us-transition: 0.22s cubic-bezier(0.4,0,0.2,1);
}

[data-theme="dark"],
.dark {
  --us-panel-bg-rgb: 30, 41, 59;
  --us-panel-bg: rgba(var(--us-panel-bg-rgb), 0.97);
  --us-text: #f1f5f9;
  --us-text-muted: #94a3b8;
  --us-border: rgba(100,116,139,0.22);
  --us-surface: #1e293b;
  --us-category-chip-bg: #334155;
  --us-category-chip-active-bg: #dc2626;
  --us-category-chip-active-text: #ffffff;
  --us-group-label-text: #cbd5e1;
  --us-row-hover: rgba(51,65,85,0.5);
}

/* ─── Overlay ─── */
.us-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: clamp(2rem, 8vh, 6rem);
  background: var(--us-overlay-bg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--us-transition), visibility var(--us-transition);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.us-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ─── Panel ─── */
.us-panel {
  width: min(720px, calc(100vw - 2rem));
  max-height: min(80vh, 640px);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--us-border);
  border-radius: var(--us-radius);
  background: var(--us-panel-bg);
  backdrop-filter: blur(var(--us-blur));
  -webkit-backdrop-filter: blur(var(--us-blur));
  box-shadow: var(--us-shadow);
  overflow: hidden;
  transform: translateY(-12px) scale(0.985);
  transition: transform var(--us-transition), opacity var(--us-transition);
  opacity: 0;
}
.us-overlay.active .us-panel {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* ─── Search Input Box ─── */
.us-input-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--us-border);
}
.us-input-box svg {
  width: 1.35rem;
  height: 1.35rem;
  color: var(--us-text-muted);
  flex-shrink: 0;
}
.us-input {
  flex: 1 1 auto;
  appearance: none;
  border: none;
  background: transparent;
  color: var(--us-text);
  font-size: 1.05rem;
  font-weight: 500;
  outline: none;
  line-height: 1.4;
  min-width: 0;
}
.us-input::placeholder {
  color: var(--us-text-muted);
  opacity: 0.8;
}
.us-input-kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--us-border);
  border-radius: 0.4rem;
  background: var(--us-category-chip-bg);
  color: var(--us-text-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  flex-shrink: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* ─── Category Chips (E-commerce/App filter style) ─── */
.us-categories {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.25rem;
  border-bottom: 1px solid var(--us-border);
  overflow-x: auto;
  scrollbar-width: none;
}
.us-categories::-webkit-scrollbar { display: none; }
.us-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  border: 0;
  border-radius: var(--us-radius-pill);
  background: var(--us-category-chip-bg);
  color: var(--us-text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: background var(--us-transition), color var(--us-transition), box-shadow var(--us-transition);
  user-select: none;
}
.us-chip:hover {
  background: rgba(var(--us-panel-bg-rgb), 0.9);
  color: var(--us-text);
  box-shadow: 0 0 0 1px var(--us-border);
}
.us-chip.active {
  background: var(--us-category-chip-active-bg);
  color: var(--us-category-chip-active-text);
  box-shadow: none;
}
.us-chip svg {
  width: 0.85rem;
  height: 0.85rem;
}
.us-chip .us-chip-count {
  font-weight: 700;
  font-size: 0.7rem;
  background: rgba(255,255,255,0.2);
  padding: 0.05rem 0.35rem;
  border-radius: 999px;
}

/* ─── Scrollable Results ─── */
.us-scroll {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 0.25rem 0;
}

/* ─── Group Headers ─── */
.us-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1.25rem 0.35rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--us-group-label-text);
  user-select: none;
}

/* ─── Result Rows ─── */
.us-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.55rem 1.25rem;
  margin: 0 0.3rem;
  border-radius: 0.65rem;
  cursor: pointer;
  transition: background var(--us-transition);
  text-decoration: none;
  color: inherit;
}
.us-row:hover,
.us-row:focus-visible {
  background: var(--us-row-hover);
}
.us-row.selected {
  background: var(--us-row-hover);
  box-shadow: inset 0 0 0 1.5px var(--us-accent);
}
.us-row-icon {
  flex: 0 0 2rem;
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.55rem;
  background: linear-gradient(135deg, var(--us-accent), #991b1b);
  color: #ffffff;
  font-size: 0.88rem;
  flex-shrink: 0;
}
.us-row-icon svg {
  width: 1rem;
  height: 1rem;
  fill: none;
  stroke-width: 1.8;
  stroke: #fff;
  stroke-linecap: round;
}

/* ─── Row Text ─── */
.us-row-body {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.us-row-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--us-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.us-row-subtitle {
  font-size: 0.76rem;
  color: var(--us-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.us-row-meta {
  flex: 0 0 auto;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--us-accent);
  white-space: nowrap;
  letter-spacing: 0.01em;
}
.us-row-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  background: rgba(220,38,38,0.1);
  color: var(--us-accent);
}

/* ─── Prediction / Intent Cards (AI-powered style) ─── */
.us-predictions {
  padding: 0.5rem 1.25rem 0.75rem;
}
.us-prediction {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.45rem 0.9rem;
  margin: 0 0.35rem;
  border-radius: 0.6rem;
  cursor: pointer;
  color: inherit;
  text-decoration: none;
  transition: background var(--us-transition);
}
.us-prediction:hover,
.us-prediction:focus-visible {
  background: var(--us-row-hover);
}
.us-prediction-icon {
  flex: 0 0 1.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--us-accent);
  opacity: 0.9;
}
.us-prediction-icon svg {
  width: 1.1rem;
  height: 1.1rem;
}
.us-prediction-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--us-text);
}
.us-prediction-tag {
  margin-left: auto;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--us-text-muted);
  background: var(--us-category-chip-bg);
  padding: 0.12rem 0.4rem;
  border-radius: 999px;
}

/* ─── Empty State ─── */
.us-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 3rem 1rem;
  color: var(--us-text-muted);
  text-align: center;
}
.us-empty svg {
  width: 2.4rem;
  height: 2.4rem;
  opacity: 0.45;
  margin-bottom: 0.4rem;
}
.us-empty-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--us-text);
}
.us-empty-subtitle {
  font-size: 0.78rem;
  max-width: 18rem;
}

/* ─── Loading Spinner ─── */
.us-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 2rem 1rem;
  color: var(--us-text-muted);
  font-size: 0.82rem;
  font-weight: 600;
}
.us-loading svg {
  width: 1.2rem;
  height: 1.2rem;
  animation: us-spin 0.9s linear infinite;
}
@keyframes us-spin {
  to { transform: rotate(360deg); }
}

/* ─── Footer ─── */
.us-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 1.25rem;
  border-top: 1px solid var(--us-border);
  font-size: 0.68rem;
  color: var(--us-text-muted);
  user-select: none;
}
.us-footer kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.1rem;
  padding: 0.1rem 0.35rem;
  border: 1px solid var(--us-border);
  border-radius: 0.3rem;
  background: var(--us-category-chip-bg);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.65rem;
}

/* ─── Trigger Button (placed in header) ─── */
.us-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  padding: 0.5rem 0.9rem;
  border: 1px solid rgba(203,213,225,0.6);
  border-radius: 0.6rem;
  background: var(--us-surface);
  color: var(--us-text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--us-transition), box-shadow var(--us-transition), transform var(--us-transition);
  min-width: 12rem;
  max-width: 18rem;
  width: 100%;
}
.us-trigger:hover {
  border-color: var(--us-accent);
  box-shadow: 0 0 0 3px var(--us-accent-glow);
}
.us-trigger svg {
  width: 1.05rem;
  height: 1.05rem;
  color: var(--us-text-muted);
}
.us-trigger-text {
  flex: 1 1 auto;
  text-align: left;
}
.us-trigger-shortcut {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.7rem;
  padding: 0.1rem 0.35rem;
  border: 1px solid var(--us-border);
  border-radius: 0.3rem;
  background: var(--us-category-chip-bg);
  color: var(--us-text-muted);
}

/* ─── Responsive ─── */
@media (max-width: 640px) {
  .us-overlay { padding-top: 1.5rem; }
  .us-panel { width: calc(100vw - 1rem); max-height: calc(100vh - 3rem); border-radius: 0.85rem; }
  .us-input { font-size: 1rem; }
  .us-chip { padding: 0.3rem 0.6rem; font-size: 0.72rem; }
  .us-row { padding: 0.5rem 0.85rem; margin: 0 0.15rem; }
  .us-trigger { min-width: auto; width: 100%; }
}