/* ══════════════════════════════════════════════════
   DRILL BOARD — Fullscreen canvas overlay
   ══════════════════════════════════════════════════ */

#drill-board-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: #0a0a0a;
  flex-direction: column;
}
#drill-board-overlay.visible {
  display: flex;
}

/* ── Top bar ── */
#db-topbar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid #333;
  background: #111;
  z-index: 10;
}
#db-topbar-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
#db-title-input {
  background: transparent;
  border: none;
  border-bottom: 1px solid #444;
  color: #f0f0f0;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 18px;
  letter-spacing: 3px;
  outline: none;
  width: 160px;
  padding: 2px 0;
}
#db-title-input:focus {
  border-color: #ffffff;
}
#db-title-input::placeholder {
  color: #444;
}
#db-topbar-actions {
  display: flex;
  gap: 8px;
}
.db-top-btn {
  padding: 6px 12px;
  background: transparent;
  border: 1px solid #555;
  border-radius: 5px;
  color: #aaa;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 12px;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.15s;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.db-top-btn:hover {
  border-color: #fff;
  color: #fff;
}
.db-top-btn.save-btn {
  border-color: #fff;
  color: #fff;
}
.db-top-btn.save-btn:hover {
  background: #222;
}

/* ── Canvas area ── */
#db-canvas-wrap {
  flex: 1;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #080808;
  touch-action: none;
}
#db-canvas {
  display: block;
  touch-action: none;
}

/* ── Bottom toolbar ── */
#db-toolbar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0;
  padding: 8px 10px;
  border-top: 1px solid #333;
  background: #111;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.db-tool-group {
  display: flex;
  gap: 4px;
  padding: 0 6px;
  border-right: 1px solid #333;
}
.db-tool-group:last-child {
  border-right: none;
}
.db-tool {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  background: #1a1a1a;
  border: 1.5px solid #333;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s;
  gap: 1px;
  flex-shrink: 0;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.db-tool:hover {
  border-color: #888;
}
.db-tool.active {
  border-color: #fff;
  background: #2a2a2a;
  box-shadow: 0 0 8px rgba(255,255,255,0.15);
}
.db-tool-icon {
  font-size: 18px;
  line-height: 1;
}
.db-tool-label {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 7px;
  letter-spacing: 1px;
  color: #888;
  line-height: 1;
}
.db-tool.active .db-tool-label {
  color: #fff;
}