/* ============================================================
   panels.css — Upgrade panels, upgrade cards, dev panel,
                tooltip system
   ============================================================ */

/* ---------- Upgrade panel ---------- */

#upgrade-panel {
  position: absolute;
  top: 44px;
  right: 0;
  height: calc(100% - 44px);
  width: 200px;
  background: var(--panel-bg);
  border-left: 1px solid var(--panel-border);
  box-shadow: -4px 0 18px rgba(0, 229, 255, 0.12);
  display: flex;
  flex-direction: column;
  z-index: 10;
}

#left-panel {
  position: absolute;
  top: 44px;
  left: 0;
  height: calc(100% - 44px);
  width: 200px;
  background: var(--panel-bg);
  border-right: 1px solid var(--panel-border);
  box-shadow: 4px 0 18px rgba(0, 229, 255, 0.12);
  display: flex;
  flex-direction: column;
  z-index: 10;
}

.panel-header {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--panel-border);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--friendly);
  text-shadow: 0 0 6px rgba(0, 229, 255, 0.7);
}

.panel-section-title {
  padding: 6px 12px 4px;
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--amber);
  border-bottom: 1px dashed rgba(255, 184, 0, 0.2);
}

.upgrade-list {
  flex: 1;
  overflow-y: auto;
  padding: 6px 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.upgrade-card {
  background: rgba(0, 229, 255, 0.04);
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: 4px;
  padding: 7px 9px;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, transform 0.08s;
}
.upgrade-card:hover { background: rgba(0, 229, 255, 0.1); border-color: rgba(0, 229, 255, 0.5); }
.upgrade-card:active { transform: scale(0.98); }
.upgrade-card.locked { opacity: 0.45; cursor: not-allowed; }
.upgrade-card.locked:hover { background: rgba(0, 229, 255, 0.04); border-color: rgba(0, 229, 255, 0.2); }
.upgrade-card.maxed { opacity: 0.85; cursor: default; border-color: rgba(255, 215, 0, 0.55); background: rgba(255, 215, 0, 0.06); }
.upgrade-card.maxed:hover { background: rgba(255, 215, 0, 0.06); border-color: rgba(255, 215, 0, 0.55); }
.upgrade-card.maxed .upgrade-cost { color: var(--gold); }
.upgrade-card.hidden { display: none; }

.upgrade-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.upgrade-level {
  font-size: 10px;
  color: var(--friendly);
  letter-spacing: 1px;
}
.upgrade-effect {
  font-size: 10px;
  color: rgba(230, 247, 255, 0.6);
  margin-top: 2px;
  line-height: 1.25;
}
.upgrade-cost {
  font-size: 11px;
  font-weight: 600;
  color: var(--gold);
  margin-top: 4px;
  text-shadow: 0 0 4px rgba(255, 215, 0, 0.5);
}

.panel-footer {
  padding: 6px 12px;
  font-size: 9px;
  letter-spacing: 1px;
  color: rgba(230, 247, 255, 0.4);
  border-top: 1px solid rgba(0, 229, 255, 0.15);
  text-align: center;
}

/* ---------- Dev panel ---------- */

#dev-panel {
  position: absolute;
  bottom: 16px;
  left: 12px;
  z-index: 35;
  background: rgba(20, 10, 30, 0.92);
  border: 1px solid var(--violet);
  box-shadow: 0 0 18px rgba(157, 78, 221, 0.45), inset 0 0 12px rgba(157, 78, 221, 0.1);
  border-radius: 4px;
  padding: 8px 10px;
  min-width: 220px;
  font-family: inherit;
  color: var(--text);
  user-select: none;
}
#dev-panel.hidden { display: none; }
.dev-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--violet);
  text-shadow: 0 0 8px rgba(157, 78, 221, 0.8);
  border-bottom: 1px dashed rgba(157, 78, 221, 0.35);
  padding-bottom: 4px;
  margin-bottom: 6px;
}
.dev-x {
  background: transparent;
  color: var(--violet);
  border: none;
  font-size: 16px;
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
}
.dev-x:hover { color: #fff; text-shadow: 0 0 6px var(--violet); }
.dev-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 4px 0;
}
.dev-btn {
  flex: 1;
  background: rgba(157, 78, 221, 0.08);
  color: var(--violet);
  border: 1px solid rgba(157, 78, 221, 0.55);
  border-radius: 3px;
  padding: 6px 8px;
  font-family: inherit;
  font-size: 11px;
  letter-spacing: 1.5px;
  cursor: pointer;
  text-shadow: 0 0 4px rgba(157, 78, 221, 0.6);
  transition: background 0.12s, transform 0.08s;
}
.dev-btn:hover { background: rgba(157, 78, 221, 0.22); }
.dev-btn:active { transform: scale(0.97); }
.dev-btn.wide { flex: 1; }
.dev-btn.on {
  background: rgba(157, 78, 221, 0.4);
  color: #fff;
  border-color: #fff;
  box-shadow: 0 0 10px rgba(157, 78, 221, 0.8);
}
.dev-wave {
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 0 6px var(--violet);
  min-width: 48px;
  text-align: center;
  letter-spacing: 1px;
}
.dev-hint {
  font-size: 9px;
  letter-spacing: 1px;
  color: rgba(230, 247, 255, 0.4);
  margin-top: 4px;
  text-align: center;
}

/* ---------- Tooltip system ---------- */
[data-tooltip]:not(button):not(input) { cursor: help; }

/* Invisible hotspot overlays for canvas-rendered features (e.g. the
   laser cannon). Positioned via JS in layoutSilo(). pointer-events:auto
   so the tooltip system picks them up on hover, but they don't block
   click input — input.js handles shift+click before this layer sees it. */
.canvas-hotspot {
  position: absolute;
  pointer-events: auto;
  background: transparent;
  z-index: 5;
}

#tooltip {
  position: absolute;
  padding: 6px 10px;
  background: rgba(5, 12, 28, 0.96);
  border: 1px solid var(--panel-border);
  box-shadow: 0 0 14px rgba(0, 229, 255, 0.2), 0 4px 12px rgba(0, 0, 0, 0.6);
  color: var(--text);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.5px;
  line-height: 1.4;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  z-index: 9999;
}
#tooltip.visible { opacity: 1; }
#tooltip.wrap {
  white-space: normal;
  width: 200px;
  text-align: center;
}