:root {
  --bg: #f7f7f7;
  --text: #222;
  --panel: #ffffff;
  --border: #d9d9d9;
  --accent: #2f80ed;
}

body.theme-dark {
  --bg: #121212;
  --text: #f2f2f2;
  --panel: #1e1e1e;
  --border: #3b3b3b;
  --accent: #7cb7ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.brand {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}

.controls-row {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.label {
  font-weight: 600;
  margin-right: 4px;
}

button {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
}

button.active,
button.primary {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.main-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 16px;
  padding: 16px;
  flex: 1;
}

.status-panel,
.board-section {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
}

.icon-grid {
  display: grid;
  gap: 16px;
  height: 100%;
  min-height: 500px;
  transition: all 0.25s ease;
}

.grid-2x2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3x3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-3x4 {
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(3, 1fr);
}

.grid-4x4 {
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
}

.icon-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 200px;
  padding: 12px;
}

.icon-card img {
  max-width: 90px;
  max-height: 90px;
  object-fit: contain;
  margin-bottom: 10px;
}

.icon-label {
  text-align: center;
  font-size: 18px;
  font-weight: 600;
}
.icon-card img {
  width: 70%;
  max-width: 120px;
}

button:hover {
  opacity: 0.9;
}

.icon-card:active {
  transform: scale(0.96);
}

@media (max-width: 900px) {

  .grid-4x4,
  .grid-3x4 {
    grid-template-columns: repeat(2, 1fr);
  }

}