/* Base styles */
body {
  margin: 0;
  padding: 0;
  font-family: "Inter", sans-serif;
  background-color: #1a1a1a;
  color: #fff;
}

/* Main container */
.admin-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
  display: flex;
  gap: 20px;
}

/* Sidebar */
.sidebar {
  width: 300px;
  background-color: #2a2a2a;
  padding: 20px;
  border-radius: 8px;
  height: fit-content;
}

.sidebar h2 {
  color: #fff;
  margin: 0 0 20px 0;
  font-size: 1.2em;
  font-family: "Poppins", sans-serif;
}

.instrument-item {
  padding: 12px 16px;
  margin-bottom: 8px;
  background-color: #3a3a3a;
  border-radius: 4px;
  color: #fff;
  font-size: 0.9em;
  cursor: pointer;
  transition: background-color 0.2s;
}

.instrument-item:hover {
  background-color: #4a4a4a;
}

/* Main content */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.header h1 {
  margin: 0;
  font-family: "Poppins", sans-serif;
  font-size: 2em;
  font-weight: 600;
  color: #fff;
}

/* Controls */
.controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #2a2a2a;
  padding: 20px;
  border-radius: 8px;
}

.bpm-control {
  display: flex;
  align-items: center;
  gap: 10px;
}

.bpm-control label {
  color: #fff;
  font-weight: 500;
}

.bpm-control input {
  width: 80px;
  padding: 8px;
  border: none;
  border-radius: 4px;
  background-color: #3a3a3a;
  color: #fff;
  font-size: 1em;
  text-align: center;
}

.control-buttons {
  display: flex;
  gap: 10px;
}

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 4px;
  background-color: #3a3a3a;
  color: #fff;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
  font-size: 0.9em;
}

.btn:hover {
  background-color: #4a4a4a;
}

.btn.primary {
  background-color: #007bff;
}

.btn.primary:hover {
  background-color: #0069d9;
}

/* Piano roll */
.piano-roll {
  display: grid;
  grid-template-columns: auto repeat(16, 1fr);
  gap: 1px;
  background-color: #2a2a2a;
  padding: 20px;
  border-radius: 8px;
  overflow: auto;
}

.instrument-label {
  padding: 12px 16px;
  background-color: #3a3a3a;
  color: #fff;
  text-align: left;
  font-size: 0.9em;
  white-space: nowrap;
  display: flex;
  align-items: center;
  min-width: 200px;
}

.grid-cell {
  aspect-ratio: 1;
  background-color: #3a3a3a;
  cursor: pointer;
  transition: background-color 0.2s;
  border-radius: 2px;
  min-width: 40px;
  min-height: 40px;
}

.grid-cell:hover {
  background-color: #4a4a4a;
}

.grid-cell.active {
  background-color: #007bff;
}

.grid-cell.beat-marker {
  border-left: 2px solid rgba(255, 255, 255, 0.1);
}

/* Status message */
.status {
  text-align: center;
  color: #fff;
  padding: 12px;
  background-color: #2a2a2a;
  border-radius: 4px;
  margin-top: 20px;
  font-size: 0.9em;
}