/* =============================================
   0-TOOLs ツールページ専用スタイル
   ============================================= */

.tool-main {
  max-width: 680px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}

/* ページタイトル */
.tool-main h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--clr-text);
  margin: 0 0 6px;
  line-height: 1.3;
}

.tool-main .tool-desc {
  font-size: 13px;
  color: var(--clr-text-muted);
  margin: 0 0 20px;
  line-height: 1.6;
}

/* =============================================
   ツール本体カード
   ============================================= */
.tool-body {
  background: var(--clr-surface);
  border-radius: var(--radius);
  padding: 20px 16px;
  box-shadow: 0 2px 10px var(--clr-shadow);
  margin-bottom: 20px;
}

/* =============================================
   入力グループ
   ============================================= */
.input-group {
  margin-bottom: 16px;
}

.input-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--clr-text-muted);
  margin-bottom: 6px;
}

.input-group input,
.input-group select,
.input-group textarea {
  width: 100%;
  padding: 12px 14px;
  font-size: 16px;
  font-family: var(--font);
  background: var(--clr-bg);
  color: var(--clr-text);
  border: 2px solid var(--clr-border);
  border-radius: 10px;
  transition: border-color 0.15s;
  appearance: none;
  -webkit-appearance: none;
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
  outline: none;
  border-color: var(--clr-primary);
}

.input-group textarea {
  resize: vertical;
  min-height: 140px;
  line-height: 1.6;
}

/* =============================================
   タブ切替
   ============================================= */
.tabs {
  display: flex;
  background: var(--clr-bg);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 20px;
  gap: 4px;
}

.tab-btn {
  flex: 1;
  padding: 10px 4px;
  font-size: 13px;
  font-weight: 600;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--clr-text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  line-height: 1.3;
}

.tab-btn.active {
  background: var(--clr-surface);
  color: var(--clr-primary-dark);
  box-shadow: 0 1px 4px var(--clr-shadow);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* =============================================
   トグルボタン（2択）
   ============================================= */
.toggle-group {
  display: flex;
  background: var(--clr-bg);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 20px;
  gap: 4px;
}

.toggle-btn {
  flex: 1;
  padding: 12px;
  font-size: 16px;
  font-weight: 700;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--clr-text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.toggle-btn.active {
  background: var(--clr-primary);
  color: #fff;
  box-shadow: 0 2px 6px rgba(58,168,232,0.4);
}

/* =============================================
   結果表示
   ============================================= */
.result-card {
  background: var(--clr-bg);
  border-radius: var(--radius);
  padding: 16px;
  margin-top: 12px;
  border: 2px solid var(--clr-border);
  transition: border-color 0.2s;
}

.result-card.has-value {
  border-color: var(--clr-primary);
}

.result-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.result-value {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--clr-primary-dark);
  line-height: 1.2;
  word-break: break-all;
}

[data-theme="dark"] .result-value {
  color: var(--clr-primary);
}

.result-sub {
  font-size: 13px;
  color: var(--clr-text-muted);
  margin-top: 4px;
}

/* 複数結果グリッド */
.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

.result-grid .result-card .result-value {
  font-size: 1.6rem;
}

/* =============================================
   コピーボタン
   ============================================= */
.btn-copy {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--clr-surface);
  border: 2px solid var(--clr-border);
  border-radius: 8px;
  color: var(--clr-text-muted);
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 8px;
  transition: border-color 0.15s, color 0.15s;
}

.btn-copy:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
}

/* =============================================
   アクションボタン
   ============================================= */
.btn-primary {
  width: 100%;
  padding: 14px;
  background: var(--clr-primary);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  margin-top: 8px;
}

.btn-primary:hover  { background: #2a8cc8; }
.btn-primary:active { transform: scale(0.98); }

.btn-secondary {
  padding: 10px 20px;
  background: transparent;
  color: var(--clr-text-muted);
  border: 2px solid var(--clr-border);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s;
}

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

/* =============================================
   エラー表示
   ============================================= */
.error-banner {
  background: #fff0f0;
  border: 2px solid var(--clr-error);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--clr-error);
  margin-top: 12px;
  display: none;
}

.error-banner.show { display: block; }

[data-theme="dark"] .error-banner { background: #2d1515; }

/* =============================================
   FAQ
   ============================================= */
.faq {
  margin-top: 36px;
}

.faq h2 {
  font-size: 17px;
  font-weight: 700;
  color: var(--clr-text);
  border-left: 4px solid var(--clr-primary);
  padding-left: 10px;
  margin: 0 0 16px;
}

.faq-item {
  border-bottom: 1px solid var(--clr-border);
}

.faq-q {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 14px 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--clr-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.faq-q::after {
  content: '＋';
  font-size: 18px;
  color: var(--clr-primary);
  flex-shrink: 0;
  transition: transform 0.2s;
}

.faq-item.open .faq-q::after {
  transform: rotate(45deg);
}

.faq-a {
  font-size: 13px;
  color: var(--clr-text-muted);
  line-height: 1.7;
  padding: 0 0 14px;
  display: none;
}

.faq-item.open .faq-a { display: block; }

/* =============================================
   関連ツール
   ============================================= */
.related-tools {
  margin-top: 36px;
}

.related-tools h2 {
  font-size: 17px;
  font-weight: 700;
  color: var(--clr-text);
  border-left: 4px solid var(--clr-primary);
  padding-left: 10px;
  margin: 0 0 16px;
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
}

.related-card {
  background: var(--clr-surface);
  border-radius: 10px;
  padding: 14px 10px;
  text-align: center;
  text-decoration: none;
  color: var(--clr-primary-dark);
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 1px 4px var(--clr-shadow);
  transition: transform 0.15s;
  line-height: 1.4;
}

.related-card:hover { transform: translateY(-2px); }

[data-theme="dark"] .related-card { color: var(--clr-primary); }