* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: Arial, "Noto Sans TC", sans-serif;
  color: #111;
  background: #fff;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  padding: 7px 12px;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #999;
  border-radius: 2px;
  padding: 7px;
  background: #fff;
  color: #111;
}

label {
  display: grid;
  gap: 4px;
}

.simple-page {
  width: min(920px, 100%);
  margin: 0 auto;
  padding: 16px;
}

.simple-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  border-bottom: 1px solid #ccc;
  margin-bottom: 14px;
  padding-bottom: 10px;
}

.simple-header h1 {
  margin: 0;
  font-size: 24px;
}

.simple-box {
  border: 1px solid #ccc;
  padding: 12px;
  margin-bottom: 12px;
}

.simple-box h2 {
  margin: 0 0 10px;
  font-size: 18px;
}

.simple-tabs,
.simple-row,
.simple-composer {
  display: grid;
  grid-template-columns: repeat(3, max-content);
  gap: 8px;
  align-items: end;
  margin-bottom: 10px;
}

.simple-row label {
  min-width: min(460px, 60vw);
}

.simple-output {
  height: 52vh;
  min-height: 280px;
  resize: vertical;
  line-height: 1.5;
  margin-bottom: 8px;
}

.simple-composer {
  grid-template-columns: minmax(0, 1fr) max-content max-content;
}

.simple-note,
.simple-status {
  margin: 8px 0 0;
  color: #555;
}

@media (max-width: 640px) {
  .simple-page {
    padding: 10px;
  }

  .simple-header {
    display: block;
  }

  .simple-header h1 {
    margin-bottom: 6px;
    font-size: 22px;
  }

  .simple-tabs,
  .simple-row,
  .simple-composer {
    grid-template-columns: 1fr;
  }

  .simple-row label {
    min-width: 0;
  }

  .simple-output {
    height: 48vh;
    min-height: 240px;
  }
}