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

:root {
  --bg: #0f1117;
  --panel: #1a1d27;
  --panel2: #22263a;
  --border: #2e3352;
  --accent: #4f8ef7;
  --accent2: #7c5cf7;
  --text: #dde3ff;
  --text-dim: #7a82a8;
  --green: #3ecf8e;
  --red: #f74f4f;
  --yellow: #f7c94f;
  --toolbar-w: 190px;
}

html, body {
  width: 100%; height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 13px;
  overflow: hidden;
}

#app {
  display: flex;
  width: 100vw; height: 100vh;
  overflow: hidden;
}

/* ── TOOLBAR ── */
#toolbar {
  width: var(--toolbar-w);
  min-width: var(--toolbar-w);
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding-bottom: 12px;
}

#logo {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 14px 14px 10px;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
  text-align: center;
  background: var(--panel2);
}

#stats {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 12px;
  background: var(--panel2);
  border-bottom: 1px solid var(--border);
}

#stats span {
  font-size: 12px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 4px;
}

#stat-funds { color: var(--green); }
#stat-rating { color: var(--yellow); }

.tool-group-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  padding: 8px 12px 3px;
  text-transform: uppercase;
}

#build-tools {
  display: flex;
  flex-direction: column;
  padding: 0 8px;
  gap: 2px;
}

.tool-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 8px;
  border-radius: 7px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
  text-align: left;
  width: 100%;
}

.tool-btn:hover { background: var(--panel2); border-color: var(--border); }
.tool-btn.selected {
  background: rgba(79,142,247,0.15);
  border-color: var(--accent);
  color: #fff;
}
.tool-btn.selected .tool-cost { color: var(--accent); }

.tool-icon { font-size: 16px; width: 20px; text-align: center; flex-shrink: 0; }
.tool-name { flex: 1; font-weight: 600; font-size: 12px; }
.tool-cost { font-size: 10px; color: var(--text-dim); font-weight: 700; }

/* SPEED */
#speed-controls {
  padding: 0 8px;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 4px;
  padding-bottom: 6px;
}

#speed-controls .tool-group-label { width: 100%; }

.speed-btn {
  flex: 1;
  padding: 6px 4px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--text);
  cursor: pointer;
  font-size: 11px;
  font-weight: 700;
  transition: background 0.12s, border-color 0.12s;
}

.speed-btn:hover { background: var(--panel2); border-color: var(--accent); }
.speed-btn.selected { background: rgba(79,142,247,0.2); border-color: var(--accent); color: var(--accent); }
.pause-btn.selected { background: rgba(247,79,79,0.15); border-color: var(--red); color: var(--red); }

/* INFO */
#info-panel {
  padding: 0 8px;
  flex: 1;
}
#info-text {
  background: var(--panel2);
  border-radius: 8px;
  padding: 10px;
  color: var(--text-dim);
  font-size: 11px;
  line-height: 1.6;
  border: 1px solid var(--border);
}

/* ── MAIN ── */
#main {
  flex: 1;
  overflow: hidden;
  position: relative;
  background: #090c14;
}

#canvas-wrap {
  width: 100%; height: 100%;
  position: relative;
  overflow: hidden;
  cursor: crosshair;
}

#tower-canvas {
  display: block;
  image-rendering: pixelated;
}

#scroll-hint {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  color: rgba(255,255,255,0.2);
  pointer-events: none;
  letter-spacing: 0.05em;
}

/* ── TOASTS ── */
#toast-container {
  position: fixed;
  top: 16px;
  right: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 9999;
  pointer-events: none;
}

.toast {
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 12px;
  color: var(--text);
  box-shadow: 0 4px 24px rgba(0,0,0,0.5);
  animation: toast-in 0.2s ease, toast-out 0.3s ease 2.5s forwards;
  max-width: 260px;
}
.toast.success { border-color: var(--green); color: var(--green); }
.toast.error { border-color: var(--red); color: var(--red); }
.toast.info { border-color: var(--accent); color: var(--accent); }

@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes toast-out {
  from { opacity: 1; }
  to { opacity: 0; }
}