/* ============================================
   键盘按键测试 样式
   ============================================ */

:root {
  --key-bg: #ffffff;
  --key-border: #cccccc;
  --key-tested: #d4edda;  /* 浅绿色：测试通过 */
  --key-pressed: #28a745; /* 深绿色：正在按下 */
  --key-text: #333333;
  --key-text-pressed: #ffffff;
}

/* Header 布局 - 支持语言按钮 */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.header-left h1 {
  margin: 0 0 8px 0;
}

.header-left .subtitle {
  margin: 0;
  color: #666;
  font-size: 1.1rem;
}

/* 语言切换按钮 */
.lang-btn {
  padding: 6px 12px;
  border: 1px solid #ccc;
  border-radius: 4px;
  background: #f8f9fa;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
}

.lang-btn:hover {
  background: #e9ecef;
}

#keyboard {
  margin: 0 auto;
  max-width: 1080px;
}

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

.key {
  min-height: 50px;
  background-color: var(--key-bg);
  border: 2px solid var(--key-border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: default;
  transition: all 0.1s ease;
}

.key .label {
  font-size: 14px;
  font-weight: 500;
  color: var(--key-text);
}

.key.tested {
  background-color: var(--key-tested);
}

.key.pressed {
  background-color: var(--key-pressed);
}

.key.pressed .label {
  color: var(--key-text-pressed);
}

.stats {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 30px;
  margin: 20px 0;
  padding: 15px;
  background-color: #fff;
  border-radius: 8px;
}

.stats span {
  font-size: 1.1rem;
  font-weight: 500;
}

#resetBtn {
  padding: 8px 20px;
  font-size: 1rem;
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

#resetBtn:hover {
  background-color: #0056b3;
}

#resetBtn:focus {
  outline: 2px solid #007bff;
  outline-offset: 2px;
}

.key:focus {
  outline: 2px solid #007bff;
  outline-offset: 2px;
}

.guide {
  background-color: #fff;
  padding: 20px;
  border-radius: 8px;
}

/* 响应式适配 */
@media (max-width: 768px) {
  header {
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
  }
  
  .lang-btn {
    align-self: flex-end;
  }
  
  #keyboard {
    transform-origin: left top;
    transform: scale(0.6);
    margin-left: 0;
  }
  
  .stats {
    flex-direction: column;
    gap: 10px;
  }
}

@media (max-width: 480px) {
  #keyboard {
    transform-origin: left top;
    transform: scale(0.45);
    margin-left: 0;
  }
}

@media (max-width: 375px) {
  #keyboard {
    transform-origin: left top;
    transform: scale(0.38);
    margin-left: 0;
  }
}