/**
 * 価格計算シミュレータ
 * ファイル: simulator.css
 * 概要: 体重米・すくすく米シミュレータのスタイル定義（グレースケール・BEM）
 * 対応: PC/タブレット/モバイル（レスポンシブ）
 */

/* ============================================================
   CSS変数定義
   ============================================================ */
:root {
  --simulator-color-text: #333;
  --simulator-color-text-light: #666;
  --simulator-color-text-lighter: #999;
  --simulator-color-bg: #fff;
  --simulator-color-bg-light: #f9f9f9;
  --simulator-color-bg-lighter: #f5f5f5;
  --simulator-color-bg-lightest: #fafafa;
  --simulator-color-border: #ddd;
  --simulator-color-border-dark: #ccc;
  --simulator-color-focus: #333;
  --simulator-color-heading-bg: #333;
  --simulator-color-heading-text: #fff;
  --simulator-space-xs: 0.25rem;
  --simulator-space-sm: 0.5rem;
  --simulator-space-md: 1rem;
  --simulator-space-lg: 1.5rem;
  --simulator-space-xl: 2rem;
  --simulator-font-size-base: 16px;
  --simulator-font-size-sm: 14px;
  --simulator-font-size-lg: 18px;
  --simulator-font-size-xl: 24px;
  --simulator-transition: 0.2s ease;
}

/* ============================================================
   リセット・ベーススタイル
   ============================================================ */
.simulator {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.simulator * {
  box-sizing: border-box;
}

.simulator {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--simulator-color-text);
  background: var(--simulator-color-bg);
  line-height: 1.6;
}

/* ============================================================
   Fieldset（セクション）
   ============================================================ */
.simulator__fieldset {
  border: 1px solid var(--simulator-color-border);
  border-radius: 4px;
  padding: 0;
  margin: 0 0 var(--simulator-space-lg) 0;
  overflow: hidden;
}

.simulator__fieldset--taiju,
.simulator__fieldset--sukusuku,
.simulator__fieldset--quantity {
  display: flex;
  flex-direction: column;
}

/* ============================================================
   Legend（見出し）
   ============================================================ */
.simulator__legend {
  background: var(--simulator-color-heading-bg);
  color: var(--simulator-color-heading-text);
  padding: var(--simulator-space-md) var(--simulator-space-lg);
  font-size: var(--simulator-font-size-lg);
  font-weight: 700;
  width: 100%;
  margin: 0;
  display: block;
  border-bottom: 1px solid var(--simulator-color-border);
}

/* ============================================================
   セクション導入文
   ============================================================ */
.simulator__section_intro {
  background: var(--simulator-color-bg-lighter);
  padding: var(--simulator-space-md) var(--simulator-space-lg);
  border-bottom: 1px solid var(--simulator-color-border);
}

.simulator__intro_text {
  margin: 0;
  padding: 0;
  font-size: var(--simulator-font-size-sm);
  color: var(--simulator-color-text-light);
  line-height: 1.6;
}

/* ============================================================
   フォームグループ
   ============================================================ */
.simulator__form_group {
  padding: var(--simulator-space-lg);
  border-bottom: 1px solid var(--simulator-color-border);
}

.simulator__form_group:last-child {
  border-bottom: 0;
}

.simulator__form_group:has(+ .simulator__price_box) {
  border-bottom: 0;
}

/* ============================================================
   ラベル
   ============================================================ */
.simulator__label {
  display: block;
  margin: 0 0 var(--simulator-space-sm) 0;
  font-weight: 600;
  font-size: var(--simulator-font-size-base);
  color: var(--simulator-color-text);
}

/* ============================================================
   入力フィールドラッパー（数値とユニット） */
   ============================================================ */
.simulator__input_wrapper {
  display: flex;
  align-items: center;
  gap: var(--simulator-space-sm);
}

.simulator__unit {
  color: var(--simulator-color-text-light);
  font-size: var(--simulator-font-size-sm);
  font-weight: 500;
}

/* ============================================================
   数値入力フィールド
   ============================================================ */
.simulator__weight_input {
  flex: 0 0 auto;
  width: 120px;
  padding: var(--simulator-space-sm) var(--simulator-space-md);
  font-size: var(--simulator-font-size-base);
  border: 1px solid var(--simulator-color-border-dark);
  border-radius: 4px;
  background: var(--simulator-color-bg);
  color: var(--simulator-color-text);
  transition: border-color var(--simulator-transition), box-shadow var(--simulator-transition);
}

.simulator__weight_input:focus {
  outline: none;
  border-color: var(--simulator-color-focus);
  box-shadow: 0 0 0 3px rgba(51, 51, 51, 0.1);
}

.simulator__weight_input:disabled {
  background: var(--simulator-color-bg-lighter);
  color: var(--simulator-color-text-lighter);
  cursor: not-allowed;
}

/* IMEモード無効化 */
.simulator__weight_input {
  ime-mode: disabled;
}

/* ============================================================
   セレクトボックス
   ============================================================ */
.simulator__rice_select,
.simulator__quantity_select {
  width: 100%;
  padding: var(--simulator-space-sm) var(--simulator-space-md);
  font-size: var(--simulator-font-size-base);
  border: 1px solid var(--simulator-color-border-dark);
  border-radius: 4px;
  background: var(--simulator-color-bg);
  color: var(--simulator-color-text);
  cursor: pointer;
  transition: border-color var(--simulator-transition), box-shadow var(--simulator-transition);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23333' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--simulator-space-md) center;
  padding-right: 2.5rem;
}

.simulator__rice_select:focus,
.simulator__quantity_select:focus {
  outline: none;
  border-color: var(--simulator-color-focus);
  box-shadow: 0 0 0 3px rgba(51, 51, 51, 0.1);
}

.simulator__rice_select:disabled,
.simulator__quantity_select:disabled {
  background: var(--simulator-color-bg-lighter);
  color: var(--simulator-color-text-lighter);
  cursor: not-allowed;
}

/* ============================================================
   価格表示ボックス
   ============================================================ */
.simulator__price_box {
  padding: var(--simulator-space-lg);
  background: var(--simulator-color-bg-lighter);
  border-top: 1px solid var(--simulator-color-border);
  display: flex;
  flex-direction: column;
  gap: var(--simulator-space-sm);
}

.simulator__price_label {
  font-size: var(--simulator-font-size-sm);
  color: var(--simulator-color-text-light);
  font-weight: 600;
}

.simulator__price_value {
  font-size: var(--simulator-font-size-xl);
  font-weight: 700;
  color: var(--simulator-color-text);
}

/* ============================================================
   トグルセクション（チェックボックス）
   ============================================================ */
.simulator__toggle_section {
  margin: var(--simulator-space-lg) 0;
  padding: var(--simulator-space-md);
}

.simulator__toggle_input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  width: 0;
  height: 0;
}

.simulator__toggle_label {
  display: flex;
  align-items: center;
  gap: var(--simulator-space-md);
  padding: var(--simulator-space-md) var(--simulator-space-lg);
  margin: 0;
  cursor: pointer;
  user-select: none;
  border: 1px solid var(--simulator-color-border);
  border-radius: 4px;
  background: var(--simulator-color-bg-lighter);
  font-weight: 500;
  font-size: var(--simulator-font-size-base);
  transition: all var(--simulator-transition);
}

.simulator__toggle_label:hover {
  background: var(--simulator-color-bg-light);
  border-color: var(--simulator-color-text-lighter);
}

.simulator__toggle_label::before {
  content: "";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border: 2px solid var(--simulator-color-border-dark);
  border-radius: 3px;
  background: var(--simulator-color-bg);
  transition: all var(--simulator-transition);
  font-size: 14px;
  color: var(--simulator-color-bg);
}

.simulator__toggle_input:checked + .simulator__toggle_label {
  background: #f0f0f0;
  border-color: var(--simulator-color-text);
}

.simulator__toggle_input:checked + .simulator__toggle_label::before {
  background: var(--simulator-color-text);
  border-color: var(--simulator-color-text);
  content: "✓";
  color: var(--simulator-color-bg);
}

.simulator__toggle_input:focus + .simulator__toggle_label {
  box-shadow: 0 0 0 3px rgba(51, 51, 51, 0.1);
}

.simulator__toggle_input:disabled + .simulator__toggle_label {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ============================================================
   フッター（総合計金額）
   ============================================================ */
.simulator__footer {
  background: var(--simulator-color-bg-lighter);
  padding: var(--simulator-space-lg);
  margin-top: var(--simulator-space-xl);
  border: 2px solid var(--simulator-color-heading-bg);
  border-radius: 4px;
  text-align: center;
}

.simulator__total_box {
  display: flex;
  flex-direction: column;
  gap: var(--simulator-space-sm);
}

.simulator__total_label {
  font-size: var(--simulator-font-size-sm);
  color: var(--simulator-color-text-light);
  font-weight: 600;
}

.simulator__total_amount {
  font-size: 2rem;
  font-weight: 700;
  color: var(--simulator-color-text);
}

/* ============================================================
   ユーティリティクラス
   ============================================================ */
.simulator__hidden {
  display: none;
}

/* hidden属性で要素を非表示 */
[hidden] {
  display: none !important;
}

/* ============================================================
   アニメーション
   ============================================================ */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    max-height: 0;
  }
  to {
    opacity: 1;
    max-height: 1000px;
  }
}

@keyframes slideUp {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-10px);
  }
}

/* すくすく米セクションのスムーズな表示アニメーション */
#simulator_sukusuku_section:not([hidden]) {
  animation: slideDown 0.3s ease-out;
}

/* ============================================================
   レスポンシブ: モバイル（～479px）
   ============================================================ */
@media (max-width: 479px) {
  :root {
    --simulator-font-size-base: 14px;
  }

  .simulator {
    padding: var(--simulator-space-md);
  }

  .simulator__legend {
    font-size: var(--simulator-font-size-lg);
    padding: var(--simulator-space-md) var(--simulator-space-md);
  }

  .simulator__form_group,
  .simulator__section_intro,
  .simulator__price_box {
    padding: var(--simulator-space-md);
  }

  .simulator__weight_input {
    width: 100px;
    font-size: var(--simulator-font-size-sm);
  }

  .simulator__rice_select,
  .simulator__quantity_select {
    font-size: var(--simulator-font-size-sm);
  }

  .simulator__price_value {
    font-size: 1.5rem;
  }

  .simulator__total_amount {
    font-size: 1.5rem;
  }

  .simulator__toggle_label {
    padding: var(--simulator-space-md);
    font-size: var(--simulator-font-size-sm);
  }
}

/* ============================================================
   レスポンシブ: タブレット（480px～767px）
   ============================================================ */
@media (min-width: 480px) and (max-width: 767px) {
  :root {
    --simulator-font-size-base: 15px;
  }

  .simulator {
    padding: var(--simulator-space-lg);
  }

  .simulator__weight_input {
    width: 110px;
  }

  .simulator__price_value {
    font-size: 1.75rem;
  }

  .simulator__total_amount {
    font-size: 1.75rem;
  }
}

/* ============================================================
   レスポンシブ: PC（768px以上）
   ============================================================ */
@media (min-width: 768px) {
  .simulator {
    padding: var(--simulator-space-xl);
    max-width: 800px;
    margin: 0 auto;
  }

  .simulator__weight_input {
    width: 140px;
  }

  .simulator__rice_select,
  .simulator__quantity_select {
    width: 100%;
  }

  .simulator__price_value {
    font-size: 2rem;
  }

  .simulator__total_amount {
    font-size: 2.5rem;
  }

  .simulator__footer {
    padding: var(--simulator-space-xl);
  }
}

/* ============================================================
   アクセシビリティ: フォーカス可視化
   ============================================================ */
.simulator__weight_input:focus-visible,
.simulator__rice_select:focus-visible,
.simulator__quantity_select:focus-visible {
  outline: 2px solid var(--simulator-color-focus);
  outline-offset: 2px;
}

.simulator__toggle_input:focus-visible + .simulator__toggle_label {
  outline: 2px solid var(--simulator-color-focus);
  outline-offset: 2px;
}

/* ============================================================
   プリント対応
   ============================================================ */
@media print {
  .simulator__toggle_section {
    display: none;
  }

  .simulator {
    background: transparent;
    padding: 0;
  }

  .simulator__footer {
    background: transparent;
    border: none;
  }
}