* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #02030a;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: #e8ecf4;
}

#app {
  position: fixed;
  inset: 0;
}

#app canvas {
  display: block;
}

.hidden {
  display: none !important;
}

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

#panel {
  position: fixed;
  top: 16px;
  left: 16px;
  width: 308px;
  max-height: calc(100vh - 32px);
  overflow-y: auto;
  background: rgba(10, 14, 28, 0.8);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(120, 150, 255, 0.18);
  border-radius: 14px;
  padding: 16px;
  z-index: 10;
  scrollbar-width: thin;
  scrollbar-color: rgba(120, 150, 255, 0.3) transparent;
}

#panel.hidden {
  display: none;
}

#panel .kicker {
  font-size: 10px;
  letter-spacing: 2.5px;
  color: #7d8fc4;
  margin-bottom: 4px;
}

#name-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

#panel header h1 {
  font-size: 20px;
  letter-spacing: 0.5px;
}

#level-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(120, 160, 255, 0.18);
  border: 1px solid rgba(140, 170, 255, 0.4);
  color: #b8ccff;
  white-space: nowrap;
}

#stage-row {
  margin-top: 6px;
  font-size: 13px;
  color: #c9d4ef;
  display: flex;
  align-items: center;
  gap: 6px;
}

#xp-bar {
  margin-top: 8px;
  height: 6px;
  border-radius: 3px;
  background: rgba(120, 150, 255, 0.15);
  overflow: hidden;
}

#xp-fill {
  height: 100%;
  width: 0%;
  border-radius: 3px;
  background: linear-gradient(90deg, #5a8dff, #9ac4ff);
  transition: width 0.3s ease;
}

#tabs {
  display: flex;
  gap: 6px;
  margin-top: 12px;
}

.tab {
  flex: 1;
  font-size: 12px;
  font-weight: 600;
  padding: 7px 8px;
  border-radius: 8px;
  border: 1px solid rgba(120, 150, 255, 0.2);
  background: transparent;
  color: #9aa5c2;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.tab:hover {
  background: rgba(70, 95, 170, 0.3);
}

.tab.active {
  background: rgba(90, 120, 220, 0.35);
  color: #e8ecf4;
  border-color: rgba(150, 180, 255, 0.55);
}

#panel section {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid rgba(120, 150, 255, 0.12);
}

#panel h2 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: #93a0c4;
  margin-bottom: 10px;
  margin-top: 12px;
}

#panel h2:first-child {
  margin-top: 0;
}

.hint {
  font-size: 11px;
  color: #8a93ad;
  margin-top: 6px;
}

/* ---------------------------------------------------------------- stats */

#energy-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

#energy-num {
  font-size: 26px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: #ffe18a;
}

.energy-unit {
  font-size: 18px;
}

#energy-rate {
  margin-left: auto;
  font-size: 13px;
  color: #9fe8a8;
  font-variant-numeric: tabular-nums;
}

/* ------------------------------------------------------------- upgrades */

.upg {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(120, 150, 255, 0.08);
}

.upg:last-child {
  border-bottom: none;
}

.upg.locked {
  opacity: 0.45;
}

.upg-icon {
  font-size: 20px;
  width: 26px;
  text-align: center;
  flex-shrink: 0;
}

.upg-body {
  flex: 1;
  min-width: 0;
}

.upg-name {
  font-size: 13px;
  font-weight: 600;
}

.upg-pips {
  font-size: 11px;
  color: #8a93ad;
  font-weight: 400;
  margin-left: 4px;
}

.upg-desc {
  font-size: 11px;
  color: #8a93ad;
  margin-top: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.upg .buy {
  flex-shrink: 0;
  min-width: 76px;
  font-size: 12px;
  font-weight: 600;
  padding: 7px 9px;
  border-radius: 8px;
  border: 1px solid rgba(255, 215, 130, 0.35);
  background: rgba(120, 90, 20, 0.35);
  color: #ffe18a;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
  font-variant-numeric: tabular-nums;
}

.upg .buy:hover:not(:disabled) {
  background: rgba(170, 130, 35, 0.5);
}

.upg .buy:active:not(:disabled) {
  transform: scale(0.96);
}

.upg .buy:disabled {
  cursor: default;
  opacity: 0.55;
}

.upg .buy.maxed {
  border-color: rgba(140, 230, 160, 0.4);
  background: rgba(30, 90, 45, 0.35);
  color: #9fe8a8;
}

.upg .buy.lockedbtn {
  border-color: rgba(150, 160, 190, 0.3);
  background: rgba(50, 60, 90, 0.3);
  color: #9aa5c2;
  font-size: 10px;
}

/* ---------------------------------------------------------------- chips */

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  font-size: 12px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid rgba(120, 150, 255, 0.25);
  background: rgba(40, 55, 100, 0.35);
  color: #dde4f5;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.chip:hover {
  background: rgba(70, 95, 170, 0.5);
}

.chip.active {
  background: rgba(90, 120, 220, 0.55);
  border-color: rgba(150, 180, 255, 0.7);
}

.btn-row {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.btn {
  flex: 1;
  font-size: 12px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid rgba(120, 150, 255, 0.25);
  background: rgba(40, 55, 100, 0.4);
  color: #e8ecf4;
  cursor: pointer;
  transition: background 0.15s;
}

.btn:hover {
  background: rgba(70, 95, 170, 0.55);
}

.btn.danger {
  border-color: rgba(255, 130, 130, 0.3);
  background: rgba(110, 40, 40, 0.3);
  color: #ffb8b8;
}

.btn.danger:hover {
  background: rgba(150, 55, 55, 0.45);
}

/* -------------------------------------------------------------- sliders */

.row {
  display: grid;
  grid-template-columns: 96px 1fr 38px;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.row label {
  font-size: 12px;
  color: #c3cbe2;
}

.row output {
  font-size: 11px;
  color: #8a93ad;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.row.checkbox {
  grid-template-columns: 96px 1fr;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: rgba(120, 150, 255, 0.25);
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #7da2ff;
  border: 2px solid #0a0e1c;
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #7da2ff;
  border: 2px solid #0a0e1c;
  cursor: pointer;
}

input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: #7da2ff;
  cursor: pointer;
}

#panel-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 11;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(120, 150, 255, 0.25);
  background: rgba(10, 14, 28, 0.78);
  color: #e8ecf4;
  font-size: 17px;
  cursor: pointer;
}

/* --------------------------------------------------------------- toasts */

#toasts {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
}

.toast {
  font-size: 13px;
  font-weight: 600;
  padding: 9px 16px;
  border-radius: 999px;
  background: rgba(15, 22, 44, 0.92);
  border: 1px solid rgba(140, 170, 255, 0.45);
  color: #dbe6ff;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
  animation: toastIn 0.25s ease, toastOut 0.4s ease 2.8s forwards;
  white-space: nowrap;
}

.toast.stage {
  font-size: 15px;
  border-color: rgba(255, 215, 130, 0.65);
  color: #ffe9b0;
  background: rgba(40, 30, 8, 0.92);
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
  to { opacity: 0; transform: translateY(-10px); }
}

/* --------------------------------------------------------- float labels */

#float-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 20;
  overflow: hidden;
}

.float-num {
  position: absolute;
  font-size: 15px;
  font-weight: 700;
  color: #ffe18a;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.8);
  animation: floatUp 0.9s ease-out forwards;
  transform: translate(-50%, -50%);
}

@keyframes floatUp {
  0% { opacity: 1; margin-top: 0; }
  100% { opacity: 0; margin-top: -48px; }
}

@media (max-width: 640px) {
  #panel {
    width: calc(100vw - 32px);
    max-height: 48vh;
    top: auto;
    bottom: 16px;
  }
}