body {
  font-family: Meiryo, Arial, Helvetica, sans-serif;
}
/* ===== ライトテーマ ===== */
:root {
  --bg: #ffffff;
  --text: #222;
  --track-off: #ccc;
  --track-on: #4f8cff;
  --thumb: #fff;
  --muted: #666;

  --border: #ccc;
  --border-focus: #4f8cff;

  --input-bg: #f8f8f8;
  --shadow: rgba(0, 0, 0, 0.08);
}

/* ===== ダークテーマ ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1e1e1e;
    --text: #eee;
    --track-off: #555;
    --track-on: #4f8cff;
    --thumb: #fff;
    --bg: #1e1e1e;
    --muted: #aaa;

    --border: #555;
    --border-focus: #4f8cff;

    --input-bg: #2a2a2a;
    --shadow: rgba(0, 0, 0, 0.35);
  }
  
  body {
    background-color: #222;
    color: white;
  }

  hr {
    border-color: #1e1e1e;
  }
}

a {
  color: var(--border-focus);
}

/* ===== toggle全体 ===== */
.toggle {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  user-select: none;
  font-size: 16px;
  color: var(--text);
}

/* inputを隠す */
.toggle input {
  display: none;
}

/* ===== スイッチの土台 ===== */
.slider {
  width: 50px;
  height: 28px;
  background: var(--track-off);
  border-radius: 999px;
  position: relative;
  transition: background 0.25s ease;
}

/* ===== 丸いボタン部分 ===== */
.slider::before {
  content: "";
  width: 22px;
  height: 22px;
  background: var(--thumb);
  border-radius: 50%;
  position: absolute;
  top: 3px;
  left: 4px;
  transition: transform 0.25s ease;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}

/* ===== ON状態 ===== */
.toggle input:checked+.slider {
  background: var(--track-on);
}

/* 丸が右に動く */
.toggle input:checked+.slider::before {
  transform: translateX(20px);
}

/* ラベル文字 */
.label-text {
  line-height: 1;
}

/* ===== 入力フィールド全体 ===== */
.input-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  color: var(--text);
  width: 100%;
}

/* タイトル */
.input-field .title {
  font-size: 13px;
  color: var(--muted);
}

/* ===== input本体 ===== */
.input-field input {
  padding: 10px 14px;
  font-size: 15px;
  border-radius: 12px;

  border: 1.5px solid var(--border);
  background: var(--input-bg);
  color: var(--text);

  outline: none;
  transition: all 0.2s ease;
}

/* hover */
.input-field input:hover {
  border-color: var(--border-focus);
}

/* focus */
.input-field input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 4px rgba(79, 140, 255, 0.25);
}

/* placeholder */
.input-field input::placeholder {
  color: var(--muted);
}

.select-wrap {
  position: relative;
}

.select-wrap select {
  width: 100%;
  padding: 10px 42px 10px 14px;
  font-size: 15px;
  border-radius: 12px;

  border: 1.5px solid var(--border);
  background: var(--input-bg);
  color: var(--text);

  outline: none;
  transition: all 0.2s ease;

  appearance: none;
  /* デフォの矢印を消す */
  cursor: pointer;
}

/* hover */
.select-wrap select:hover {
  border-color: var(--border-focus);
}

/* focus */
.select-wrap select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 4px rgba(79, 140, 255, 0.25);
}

/* ▼矢印（CSSで作る） */
.select-wrap::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: translateY(-60%) rotate(45deg);
  pointer-events: none;
}

.btn-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  padding: 10px 16px;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: transform .08s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  user-select: none;
}

.btn:active {
  transform: translateY(1px);
}

/* Primary */
.btn.primary {
  background: var(--border-focus);
  color: #fff;
  box-shadow: 0 8px 18px var(--shadow);
}

.btn.primary:hover {
  box-shadow: 0 10px 22px var(--shadow);
}

/* Secondary */
.btn.secondary {
  background: var(--input-bg);
  color: var(--text);
  border-color: var(--border);
}

.btn.secondary:hover {
  border-color: var(--border-focus);
}