/* ═══════════════════════════════════════════════════════════════
   GLU TOOLS — SKU COMPARE
   Desktop-first docked panel · Mobile bottom sheet
   Mirrors quote-cart.css structure, cyan accent
   ═══════════════════════════════════════════════════════════════ */

/* ── Compare-specific accent (cyan/teal, distinct from inventory blue and quoter amber) ── */
:root {
  --compare-accent: #22d3ee;
  --compare-accent-dim: rgba(34, 211, 238, 0.10);
  --compare-accent-glow: rgba(34, 211, 238, 0.4);
  --compare-accent-medium: rgba(34, 211, 238, 0.22);
  --compare-accent-strong: rgba(34, 211, 238, 0.6);
}

/* ═══════════════════════════════════════
   TOPBAR COMPARE BUTTON
   ═══════════════════════════════════════ */
.topbar-compare-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border-radius: var(--radius-sm, 6px);
  border: 1px solid var(--border-emphasis, rgba(255, 255, 255, 0.12));
  background: linear-gradient(180deg, rgba(32,32,36,0.8), rgba(20,20,24,0.9));
  color: var(--text-secondary, rgba(255, 255, 255, 0.56));
  cursor: pointer;
  transition: all 120ms cubic-bezier(0.16, 1, 0.3, 1);
  font-family: var(--font-mono, 'IBM Plex Mono', monospace);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.topbar-compare-btn:hover {
  border-color: var(--compare-accent-medium);
  color: var(--compare-accent);
  background: linear-gradient(180deg, rgba(34,211,238,0.06), rgba(34,211,238,0.02));
}

.topbar-compare-btn svg { width: 16px; height: 16px; color: var(--compare-accent); opacity: 0.7; }
.topbar-compare-btn:hover svg { opacity: 1; }

.topbar-compare-badge {
  min-width: 20px; height: 20px;
  border-radius: 10px;
  background: var(--compare-accent);
  color: #000;
  font-family: var(--font-mono, 'IBM Plex Mono', monospace);
  font-size: 11px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  padding: 0 6px;
  transform: scale(0);
  transition: transform 200ms cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 0 8px var(--compare-accent-glow);
}
.topbar-compare-badge.visible { transform: scale(1); }

/* ═══════════════════════════════════════
   SKU POPUP COMPARE BUTTON
   ═══════════════════════════════════════ */
.sku-hud-btn.compare {
  border-color: var(--compare-accent-medium);
  background: linear-gradient(180deg, rgba(34,211,238,0.08), rgba(34,211,238,0.03));
  color: var(--compare-accent);
}
.sku-hud-btn.compare:hover {
  border-color: var(--compare-accent-strong);
  background: linear-gradient(180deg, rgba(34,211,238,0.14), rgba(34,211,238,0.06));
  box-shadow: 0 0 16px var(--compare-accent-dim);
}
.sku-hud-btn.compare:active { transform: scale(0.98); }

.sku-hud-btn.compare.in-cart {
  border-color: var(--compare-accent-strong);
  background: var(--compare-accent-dim);
}
.sku-hud-btn.compare.in-cart .btn-badge {
  display: inline-flex;
  background: var(--compare-accent);
  color: #000;
}

/* ═══════════════════════════════════════
   MAIN CONTENT SHIFT (when compare panel is open)
   ═══════════════════════════════════════ */
body.compare-panel-open .main-content,
body.compare-panel-open .inventory-container {
  margin-right: calc(var(--panel-width, 420px) + 16px);
  transition: margin-right 320ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ═══════════════════════════════════════
   RIGHT PANEL — docked, NO overlay on desktop
   ═══════════════════════════════════════ */
.compare-panel-overlay {
  position: fixed; inset: 0;
  z-index: 200;
  display: none;
}

.compare-panel {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: var(--panel-width, 420px);
  z-index: 201;
  transform: translateX(100%);
  transition: transform 320ms cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  background: rgba(12, 12, 14, 0.25);
  backdrop-filter: blur(14px) saturate(180%);
  -webkit-backdrop-filter: blur(14px) saturate(180%);
  border-left: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: -4px 0 24px rgba(0,0,0,0.25), inset 1px 0 0 rgba(255,255,255,0.08);
}
.compare-panel.open { transform: translateX(0); }

/* Hide feedback button when compare panel is open */
body.compare-panel-open #feedback-btn {
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}

/* Panel Header */
.compare-panel .panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  flex-shrink: 0;
  background: rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.compare-panel .panel-title { display: flex; align-items: center; gap: 10px; }

.compare-panel .panel-title .led {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--compare-accent);
  box-shadow: 0 0 8px var(--compare-accent-glow);
  animation: compare-led-pulse 2s ease-in-out infinite;
}
@keyframes compare-led-pulse {
  0%, 100% { box-shadow: 0 0 6px var(--compare-accent-glow); }
  50% { box-shadow: 0 0 14px var(--compare-accent-glow), 0 0 24px rgba(34,211,238,0.12); }
}

.compare-panel .panel-title-text {
  font-family: var(--font-mono, 'IBM Plex Mono', monospace);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--compare-accent);
}

.compare-panel .panel-item-count {
  font-family: var(--font-mono, 'IBM Plex Mono', monospace);
  font-size: 11px;
  color: var(--text-tertiary, rgba(255, 255, 255, 0.32));
  margin-left: 4px;
}

.compare-panel .btn-panel-close {
  width: 34px; height: 34px;
  border-radius: var(--radius-sm, 6px);
  border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.04));
  background: transparent;
  color: var(--text-tertiary, rgba(255, 255, 255, 0.32));
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 120ms;
}
.compare-panel .btn-panel-close:hover {
  color: var(--text-secondary, rgba(255, 255, 255, 0.56));
  border-color: var(--border-emphasis, rgba(255, 255, 255, 0.12));
}

/* Panel Body */
.compare-panel .panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
  overscroll-behavior: contain;
}
.compare-panel .panel-body::-webkit-scrollbar { width: 4px; }
.compare-panel .panel-body::-webkit-scrollbar-track { background: transparent; }
.compare-panel .panel-body::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.07); border-radius: 2px; }

/* Empty state */
.compare-empty {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 60px 20px; text-align: center;
}
.compare-empty-icon {
  width: 52px; height: 52px;
  border-radius: 50%;
  border: 1px dashed var(--border-emphasis, rgba(255, 255, 255, 0.12));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  color: var(--text-faint, rgba(255, 255, 255, 0.38));
}
.compare-empty-text {
  font-family: var(--font-mono, 'IBM Plex Mono', monospace);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary, rgba(255, 255, 255, 0.32));
  line-height: 1.8;
}

/* ── Compare Items ── */
.compare-item {
  padding: 14px 16px;
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md, 10px);
  margin-bottom: 8px;
  position: relative;
  transition: all 200ms cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
}
.compare-item:hover { border-color: var(--border-default, rgba(255, 255, 255, 0.08)); }

.compare-item.removing {
  transform: translateX(40px);
  opacity: 0;
  margin-bottom: -60px;
}

.compare-item-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.compare-item-info { flex: 1; min-width: 0; padding-right: 8px; }

.compare-item-name {
  font-family: var(--font-mono, 'IBM Plex Mono', monospace);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary, rgba(255, 255, 255, 0.92));
  line-height: 1.35;
}

.compare-item-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 5px;
}

.compare-item-sku {
  font-family: var(--font-mono, 'IBM Plex Mono', monospace);
  font-size: 11px;
  color: var(--text-tertiary, rgba(255, 255, 255, 0.32));
}

.compare-item-price {
  font-family: var(--font-mono, 'IBM Plex Mono', monospace);
  font-size: 11px;
  font-weight: 600;
  color: var(--compare-accent);
}

.compare-item .btn-remove {
  width: 28px; height: 28px;
  border: none;
  background: transparent;
  color: var(--text-faint, rgba(255, 255, 255, 0.38));
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-xs, 4px);
  transition: all 120ms;
  flex-shrink: 0;
}
.compare-item .btn-remove:hover { color: var(--signal-critical, #f87171); }
.compare-item .btn-remove svg { width: 14px; height: 14px; }

/* ═══════════════════════════════════════
   PANEL FOOTER
   ═══════════════════════════════════════ */
.compare-panel .panel-footer {
  padding: 18px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  flex-shrink: 0;
  background: rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
}

.btn-compare-now {
  width: 100%;
  padding: 15px 24px;
  border: 1px solid var(--compare-accent-medium);
  border-radius: var(--radius-sm, 6px);
  background: linear-gradient(180deg, rgba(34,211,238,0.14), rgba(34,211,238,0.05));
  color: var(--compare-accent);
  font-family: var(--font-mono, 'IBM Plex Mono', monospace);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: all 200ms cubic-bezier(0.16, 1, 0.3, 1);
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
.btn-compare-now:hover:not(:disabled) {
  background: linear-gradient(180deg, rgba(34,211,238,0.2), rgba(34,211,238,0.08));
  border-color: var(--compare-accent-strong);
  box-shadow: 0 0 20px var(--compare-accent-dim);
}
.btn-compare-now:active:not(:disabled) { transform: scale(0.99); }
.btn-compare-now:disabled { opacity: 0.3; cursor: not-allowed; }

.btn-compare-now .led-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--compare-accent);
  box-shadow: 0 0 6px var(--compare-accent-glow);
}

/* ═══════════════════════════════════════
   COMPARISON MODAL
   ═══════════════════════════════════════ */
.compare-modal-overlay {
  position: fixed; inset: 0;
  z-index: 300;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 250ms cubic-bezier(0.16, 1, 0.3, 1);
}
.compare-modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.compare-modal {
  width: 94%;
  max-width: 780px;
  max-height: 88vh;
  background: rgba(14, 14, 18, 0.95);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.06);
  transform: scale(0.95) translateY(10px);
  transition: transform 250ms cubic-bezier(0.16, 1, 0.3, 1);
}
.compare-modal-overlay.active .compare-modal {
  transform: scale(1) translateY(0);
}

.compare-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  flex-shrink: 0;
}

.compare-modal-title {
  font-family: var(--font-mono, 'IBM Plex Mono', monospace);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--compare-accent);
  display: flex;
  align-items: center;
  gap: 10px;
}
.compare-modal-title .led {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--compare-accent);
  box-shadow: 0 0 8px var(--compare-accent-glow);
}

.compare-modal-close {
  width: 34px; height: 34px;
  border-radius: var(--radius-sm, 6px);
  border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.04));
  background: transparent;
  color: var(--text-tertiary, rgba(255, 255, 255, 0.32));
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 120ms;
}
.compare-modal-close:hover {
  color: var(--text-secondary, rgba(255, 255, 255, 0.56));
  border-color: var(--border-emphasis, rgba(255, 255, 255, 0.12));
}

.compare-modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 0;
  overscroll-behavior: contain;
}
.compare-modal-body::-webkit-scrollbar { width: 4px; }
.compare-modal-body::-webkit-scrollbar-track { background: transparent; }
.compare-modal-body::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.07); border-radius: 2px; }

/* ── Comparison Table ── */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono, 'IBM Plex Mono', monospace);
  font-size: 13px;
}

.compare-table th,
.compare-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  vertical-align: middle;
}

/* Header row (SKU names) */
.compare-table thead th {
  position: sticky;
  top: 0;
  background: rgba(14, 14, 18, 0.98);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.compare-table .col-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-tertiary, rgba(255, 255, 255, 0.32));
  width: 110px;
  min-width: 110px;
}

.compare-table .col-sku {
  font-size: 12px;
  font-weight: 700;
  color: var(--compare-accent);
  text-align: center;
}

.compare-table .col-delta {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint, rgba(255, 255, 255, 0.24));
  text-align: center;
  width: 80px;
  min-width: 80px;
}

/* Spec rows */
.compare-table .spec-label-cell {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary, rgba(255, 255, 255, 0.32));
}

.compare-table .spec-value-cell {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary, rgba(255, 255, 255, 0.92));
  text-align: center;
}

.compare-table .spec-delta-cell {
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  color: var(--text-faint, rgba(255, 255, 255, 0.24));
}

/* Delta highlighting */
.compare-table .delta-winner {
  color: var(--signal-healthy, #34d399);
  background: rgba(52, 211, 153, 0.06);
}

.compare-table .delta-loser {
  color: var(--signal-critical, #f87171);
  background: rgba(248, 113, 113, 0.04);
}

.compare-table .delta-neutral {
  color: var(--text-faint, rgba(255, 255, 255, 0.24));
}

/* Winning value cell gets subtle highlight */
.compare-table .value-winner {
  color: var(--signal-healthy, #34d399);
}

/* Alternating row shading */
.compare-table tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.015);
}
.compare-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.03);
}

/* ═══════════════════════════════════════
   MOBILE FAB + SHEET
   ═══════════════════════════════════════ */
.fab-compare {
  display: none;
  position: fixed;
  bottom: 24px; right: 84px;
  z-index: 900;
  width: 56px; height: 56px;
  border-radius: 50%;
  border: 1px solid rgba(34,211,238,0.3);
  background: linear-gradient(135deg, rgba(20,28,32,0.95), rgba(12,18,20,0.98));
  backdrop-filter: blur(20px);
  align-items: center; justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 24px rgba(0,0,0,0.5);
}
.fab-compare svg { width: 22px; height: 22px; color: var(--compare-accent); }

.fab-compare-badge {
  position: absolute;
  top: -2px; right: -2px;
  min-width: 20px; height: 20px;
  border-radius: 10px;
  background: var(--compare-accent);
  color: #000;
  font-family: var(--font-mono, 'IBM Plex Mono', monospace);
  font-size: 10px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  padding: 0 5px;
  transform: scale(0);
  transition: transform 200ms cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 2px 8px var(--compare-accent-glow);
}
.fab-compare-badge.visible { transform: scale(1); }

.compare-panel .sheet-handle {
  display: none;
  justify-content: center;
  padding: 10px 0 2px;
  flex-shrink: 0;
}
.compare-panel .sheet-handle-bar {
  width: 36px; height: 4px;
  border-radius: 2px;
  background: rgba(255,255,255,0.18);
}

/* ═══════════════════════════════════════
   MOBILE (<768px)
   ═══════════════════════════════════════ */
@media (max-width: 768px) {
  .topbar-compare-btn { display: none; }
  .fab-compare { display: flex; }

  body.compare-panel-open .main-content,
  body.compare-panel-open .inventory-container { margin-right: 0; }

  .compare-panel-overlay { display: block; }
  .compare-panel-overlay.open { background: rgba(0,0,0,0.5); pointer-events: auto; }

  .compare-panel {
    width: 100%; top: auto; bottom: 0;
    max-height: 88dvh;
    border-left: none;
    border-top: 1px solid var(--border-default, rgba(255, 255, 255, 0.08));
    border-radius: 16px 16px 0 0;
    transform: translateY(100%);
  }
  .compare-panel .panel-header { padding: 12px 20px; }
  .compare-panel .panel-body { padding: 12px 16px; }
  .compare-panel .panel-footer { padding: 14px 16px; padding-bottom: max(14px, env(safe-area-inset-bottom)); }
  .compare-panel .sheet-handle { display: flex; }

  /* Modal responsive */
  .compare-modal {
    width: 100%;
    max-width: 100%;
    max-height: 100vh;
    border-radius: 0;
  }
  .compare-table .col-label {
    width: 80px;
    min-width: 80px;
    font-size: 9px;
  }
  .compare-table th,
  .compare-table td {
    padding: 10px 10px;
    font-size: 12px;
  }
  .compare-table .col-delta {
    width: 56px;
    min-width: 56px;
  }
}