@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono&display=swap');

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'JetBrains Mono', Consolas, monospace;
  background-color: #1e1e1e;
  color: #d4d4d4;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background-color: #252526;
  padding: 8px 16px;
  border-bottom: 1px solid #333;
  font-weight: 600;
  font-size: 16px;
  color: #d4d4d4;
  user-select: none;
  height: 40px;
  display: flex;
  align-items: center;
}

header h1 {
  margin: 0;
  font-weight: 600;
  font-size: 16px;
}

#main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: calc(100vh - 40px);
  overflow: hidden;
}

/* File input */
#lrcFile {
  padding: 10px 14px;
  background: #252526;
  color: #ccc;
  border: none;
  outline: none;
  font-size: 14px;
  width: 100%;
  cursor: pointer;
  font-weight: 500;
  border-bottom: 1px solid #333;
}

#lrcFile:hover {
  background-color: #333;
}

/* Editor container */
#editor-container {
  display: flex;
  background-color: #1e1e1e;
  border-top: 1px solid #2d2d2d;
  border-bottom: 1px solid #2d2d2d;
  flex: 1;
  overflow: hidden;
  font-family: 'JetBrains Mono', Consolas, monospace;
  font-size: 15px;
  color: #d4d4d4;
}

#lineNumbers {
  background-color: #252526;
  padding: 16px 8px 16px 8px;
  user-select: none;
  color: #858585;
  text-align: right;
  line-height: 1.6;
  width: 40px;
  border-right: 1px solid #333;
  overflow: hidden;
  font-size: 15px;
}

#editor {
  flex: 1;
  padding: 16px;
  outline: none;
  white-space: pre-wrap;
  overflow-y: auto;
  line-height: 1.6;
  color: #d4d4d4;
  background-color: transparent;
  caret-color: #00aaff;
  font-weight: 400;
  user-select: text;
}

.cursor {
  width: 8px;
  background-color: #00aaff;
  animation: blink 1s step-start infinite;
  display: inline-block;
}

@keyframes blink {
  50% { background-color: transparent; }
}

/* Keyboard */
#keyboard {
  background: #2d2d2d;
  padding: 12px 10px 20px;
  box-shadow: 0 -4px 8px rgba(0,0,0,0.4);
  z-index: 1000;
  user-select: none;
}

/* Keyboard rows */
.keyboard-row {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-bottom: 8px;
}

/* Keys */
.key {
  background: #3a3a3a;
  color: #d4d4d4;
  font-size: 16px;
  font-weight: 500;
  text-align: center;
  padding: 14px 0;
  flex: 1;
  max-width: 50px;
  cursor: pointer;
  border-radius: 4px;
  border: 1px solid #444;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.key:hover:not(.active) {
  background-color: #5050ff;
  color: #fff;
  transform: translateY(-1px);
}

.key:active,
.key.active {
  background-color: #3a3aff;
  color: #fff;
  transform: translateY(1px);
}

.key.wide {
  flex: 2;
  max-width: none;
}

.key.space {
  flex: 5;
  max-width: none;
  letter-spacing: 0.05em;
}

.key.shift {
  background: #555;
}

.key.shift.active {
  background: #3399ff;
  color: white;
}

@media (max-width: 700px) {
  #editor-container {
    font-size: 14px;
  }
  .key {
    font-size: 14px;
    max-width: 40px;
    padding: 12px 0;
  }
  .key.wide {
    flex: 2;
  }
  .key.space {
    flex: 5;
  }
  #lrcFile {
    font-size: 14px;
    padding: 10px 14px;
  }
}