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

html, body {
  height: 100%;
  background: #0e0820;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: #fce8d6;
  overflow-y: auto;
  overflow-x: hidden;
  user-select: none;
}

/* ---- Toolbar ---- */
#toolbar {
  display: flex;
  align-items: center;
  padding: 8px 14px;
  background: #1a0f2e;
  border-bottom: 1px solid #3a1f4e;
  gap: 8px;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 10;
}
.tool-group { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.tool-group.right { margin-left: auto; }

button {
  font-size: 13px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.07);
  color: #fce8d6;
  cursor: pointer;
  transition: background 0.1s, border-color 0.1s;
  white-space: nowrap;
}
button:hover { background: rgba(255,255,255,0.14); }
button.active {
  background: rgba(255, 158, 77, 0.22);
  border-color: rgba(255, 158, 77, 0.7);
  color: #ffd24d;
}
button.primary {
  background: linear-gradient(90deg, #ffd24d, #ff7a4d);
  border: none;
  color: #1a0f2e;
  font-size: 14px;
}
button.primary:hover { filter: brightness(1.1); }
button.small {
  font-size: 11px;
  padding: 4px 10px;
  margin-top: 4px;
}

#hint {
  text-align: center;
  font-size: 12px;
  color: #d99a78;
  padding: 5px;
  background: #150a26;
  border-bottom: 1px solid #241040;
  min-height: 26px;
}

/* ---- Canvas ---- */
#canvas-wrap {
  overflow-x: scroll;
  overflow-y: hidden;
  display: flex;
  align-items: center;
  height: 260px;
  background: #0e0820;
  border-bottom: 1px solid #2a1040;
}
#editor-canvas { display: block; flex-shrink: 0; cursor: crosshair; }

/* ---- Collapsible panels ---- */
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 16px;
  background: #1a0f2e;
  border-bottom: 1px solid #2a1040;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.panel-header:hover { background: #221440; }
.chevron { font-size: 11px; transition: transform 0.2s; }
.panel-header.closed .chevron { transform: rotate(-90deg); }

.panel-body {
  padding: 12px 16px;
  background: #130827;
  border-bottom: 1px solid #241040;
}
.panel-body.hidden { display: none; }

/* ---- Physics sliders ---- */
.slider-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.slider-row label {
  width: 180px;
  font-size: 12px;
  color: #d99a78;
  flex-shrink: 0;
  display: flex;
  justify-content: space-between;
}
.val { color: #ffd24d; font-weight: 700; min-width: 36px; text-align: right; }
input[type=range] {
  flex: 1;
  accent-color: #ff9e3d;
  cursor: pointer;
}

/* ---- Save slots ---- */
.save-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
#save-name {
  flex: 1;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  color: #fce8d6;
  padding: 6px 10px;
  font-size: 13px;
}
#save-name::placeholder { color: rgba(255,200,160,0.4); }
#save-name:focus { outline: none; border-color: rgba(255,158,77,0.6); }

.slot-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
  margin-bottom: 6px;
}
.slot-item.active-slot {
  border-color: rgba(255,210,77,0.55);
  background: rgba(255,200,77,0.08);
}
.slot-name {
  flex: 1;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.slot-date { font-size: 10px; color: #a08090; white-space: nowrap; }
.slot-btns { display: flex; gap: 5px; flex-shrink: 0; }
.slot-btns button { padding: 4px 9px; font-size: 11px; }
.slot-btns .load-btn { border-color: rgba(255,158,77,0.5); color: #ffd24d; }
.slot-btns .del-btn  { border-color: rgba(255,80,80,0.4);  color: #ff8080; }
.slot-active-badge {
  font-size: 10px;
  background: rgba(255,210,77,0.2);
  border: 1px solid rgba(255,210,77,0.5);
  color: #ffd24d;
  border-radius: 4px;
  padding: 1px 5px;
  white-space: nowrap;
}