:root {
  --color-bg: #ffffff;
  --color-text: #222222;
  --color-border: #cccccc;
  --color-surface: #f0f0f0;
  --color-surface-hover: #e0e0e0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #111111;
    --color-text: #f3f3f3;
    --color-border: #3a3a3a;
    --color-surface: #262626;
    --color-surface-hover: #333333;
  }
}

:root[data-theme='light'] {
  --color-bg: #ffffff;
  --color-text: #222222;
  --color-border: #cccccc;
  --color-surface: #f0f0f0;
  --color-surface-hover: #e0e0e0;
}

:root[data-theme='dark'] {
  --color-bg: #111111;
  --color-text: #f3f3f3;
  --color-border: #3a3a3a;
  --color-surface: #262626;
  --color-surface-hover: #333333;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
}

#root {
  width: 100%;
  height: 100%;

  padding-bottom: 800px;
}

.header {
  display: flex;
  align-items: center;
  gap: 10px;

  .btn {
    padding: 10px;
    background-color: var(--color-surface);
    border-radius: 5px;
    cursor: pointer;
  }
}

.content {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.word-item {
  display: flex;
  gap: 10px;
}

.word-item-idx {
  width: 37px;
}

.word-item-english {
  width: 100px;
}

.word-item-explanation {
  flex: 1;
}

.input {
  width: 50px;
  text-align: center;
  border: 1px solid var(--color-border);
  border-radius: 5px;
  padding: 5px;
  font-size: 16px;
  font-weight: bold;
  color: var(--color-text);
  background-color: var(--color-surface);
  cursor: pointer;
  transition: all 0.3s ease;
  &:hover {
    background-color: var(--color-surface-hover);
  }
}