/* ========================================
   猫の手 - スタイルシート
   ======================================== */

/* リセット & 基本設定 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #f59e42;
  --primary-light: #ffe4c4;
  --primary-dark: #d97b1a;
  --bg: #faf9f7;
  --card-bg: #ffffff;
  --text: #333333;
  --text-light: #777777;
  --border: #e8e5e0;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --transition: 0.2s ease;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans',
    'Noto Sans JP', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--primary-dark);
  text-decoration: none;
}

/* ========================================
   SVGアイコン共通
   ======================================== */
.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: -0.125em;
  fill: currentColor;
  flex-shrink: 0;
}

.icon-sm { width: 16px; height: 16px; }
.icon-md { width: 24px; height: 24px; }
.icon-lg { width: 40px; height: 40px; }
.icon-xl { width: 64px; height: 64px; }
.icon-hero { width: 80px; height: 80px; }

/* ========================================
   ヘッダー
   ======================================== */
.header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 6px;
}

.header-logo .header-icon {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.header-nav a {
  font-size: 0.85rem;
  color: var(--text-light);
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.header-nav a:hover {
  color: var(--primary-dark);
}

/* ========================================
   ヒーローセクション（トップページ）
   ======================================== */
.hero {
  text-align: center;
  padding: 48px 20px 32px;
  max-width: 800px;
  margin: 0 auto;
}

.hero-cat {
  margin-bottom: 16px;
  animation: catBounce 2s ease-in-out infinite;
}

.hero-character {
  width: 180px;
  height: auto;
  border-radius: 50%;
  object-fit: cover;
}

.hero-cat .icon {
  width: 80px;
  height: 80px;
  fill: var(--text);
}

@keyframes catBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.hero h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.hero .subtitle {
  font-size: 1rem;
  color: var(--text-light);
}

/* ========================================
   ツールカード一覧
   ======================================== */
.tools-grid {
  margin: 0 auto;
  padding: 0 20px 60px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.tool-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  display: block;
  position: relative;
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.tool-card .tool-icon {
  margin-bottom: 12px;
}

.tool-card .tool-icon .icon {
  width: 40px;
  height: 40px;
  fill: var(--primary-dark);
}

.tool-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.tool-card p {
  font-size: 0.82rem;
  color: var(--text-light);
  line-height: 1.5;
}

.tool-card .fav-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.3;
  transition: opacity var(--transition);
  padding: 4px;
  line-height: 1;
}

.tool-card .fav-btn .icon {
  width: 18px;
  height: 18px;
  fill: var(--primary-dark);
}

.tool-card .fav-btn.active {
  opacity: 1;
}

/* ドラッグ&ドロップ並び替え */
.tool-card[draggable="true"] {
  cursor: grab;
}

.tool-card.dragging {
  opacity: 0.4;
  cursor: grabbing;
}

.tool-card.drag-over {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}

.reorder-hint {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px 8px;
  font-size: 0.78rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 4px;
}

.reorder-hint .icon {
  width: 14px;
  height: 14px;
}

/* 最近使ったツール */
.recent-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px 16px;
}

.recent-section h2 {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 10px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.recent-section h2 .icon {
  width: 14px;
  height: 14px;
}

.recent-list {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.recent-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  transition: background var(--transition);
}

.recent-chip:hover {
  background: #ffd9a8;
}

/* ========================================
   ツールページ共通
   ======================================== */
.tool-page {
  max-width: 640px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

.tool-page h2 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tool-page h2 .icon {
  width: 24px;
  height: 24px;
  fill: var(--primary-dark);
}

.tool-page .tool-desc {
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 24px;
}

/* テキストエリア */
.input-area {
  width: 100%;
  min-height: 160px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  font-size: 0.95rem;
  font-family: inherit;
  resize: vertical;
  outline: none;
  transition: border-color var(--transition);
  background: var(--card-bg);
}

.input-area:focus {
  border-color: var(--primary);
}

/* ボタン */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 28px;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  margin-top: 16px;
}

.btn .icon {
  width: 18px;
  height: 18px;
  fill: #fff;
}

.btn:hover {
  background: var(--primary-dark);
}

.btn:active {
  transform: scale(0.97);
}

.btn-secondary {
  background: var(--border);
  color: var(--text);
}

.btn-secondary:hover {
  background: #d5d0ca;
}

/* 結果エリア */
.result-area {
  margin-top: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  min-height: 80px;
  white-space: pre-wrap;
  word-break: break-all;
  font-size: 0.93rem;
  display: none;
}

.result-area.show {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* 猫コメント */
.cat-comment {
  display: none;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--primary-light);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-dark);
  animation: fadeIn 0.4s ease;
}

.cat-comment.show {
  display: flex;
}

.cat-comment .cat-face {
  flex-shrink: 0;
}

.cat-comment .cat-face .icon {
  width: 24px;
  height: 24px;
  fill: var(--primary-dark);
}

/* カウンター表示 */
.count-display {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.count-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}

.count-item .count-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1.2;
}

.count-item .count-label {
  font-size: 0.78rem;
  color: var(--text-light);
  margin-top: 4px;
}

/* 画像リサイズ */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  margin-bottom: 16px;
}

.upload-area:hover,
.upload-area.dragover {
  border-color: var(--primary);
  background: var(--primary-light);
}

.upload-area .upload-icon .icon {
  width: 40px;
  height: 40px;
  fill: var(--text-light);
  margin-bottom: 8px;
}

.upload-area p {
  font-size: 0.88rem;
  color: var(--text-light);
}

.upload-area input[type="file"] {
  display: none;
}

.size-inputs {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 16px;
  flex-wrap: wrap;
}

.size-inputs label {
  font-size: 0.85rem;
  font-weight: 600;
}

.size-inputs input[type="number"] {
  width: 100px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition);
}

.size-inputs input[type="number"]:focus {
  border-color: var(--primary);
}

.size-inputs .size-x {
  font-size: 1rem;
  color: var(--text-light);
}

.preview-container {
  margin-top: 20px;
  text-align: center;
}

.preview-container img {
  max-width: 100%;
  max-height: 400px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.preview-info {
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--text-light);
}

/* コピーボタン */
.copy-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 0.82rem;
  cursor: pointer;
  color: var(--text-light);
  transition: all var(--transition);
  margin-top: 8px;
  display: none;
  align-items: center;
  gap: 4px;
}

.copy-btn.show {
  display: inline-flex;
}

.copy-btn .icon {
  width: 14px;
  height: 14px;
}

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

/* フッター */
.footer {
  text-align: center;
  padding: 24px 20px;
  font-size: 0.78rem;
  color: var(--text-light);
  border-top: 1px solid var(--border);
  margin-top: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.footer .icon {
  width: 14px;
  height: 14px;
}

/* アニメーション */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.3s ease;
}

/* ローディング */
.loading-msg {
  text-align: center;
  margin-top: 20px;
  display: none;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: var(--text-light);
}

.loading-msg .icon {
  width: 20px;
  height: 20px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ========================================
   パスワード生成
   ======================================== */
.pw-result {
  margin-top: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  display: none;
}

.pw-result.show {
  display: block;
  animation: fadeIn 0.3s ease;
}

.pw-result .pw-text {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 1.3rem;
  font-weight: 700;
  word-break: break-all;
  color: var(--text);
  padding: 12px;
  background: var(--bg);
  border-radius: 8px;
  user-select: all;
}

.slider-group {
  margin-top: 16px;
}

.slider-group label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.slider-group input[type="range"] {
  width: 100%;
  accent-color: var(--primary);
  height: 6px;
}

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  cursor: pointer;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  transition: border-color var(--transition);
}

.checkbox-group label:has(input:checked) {
  border-color: var(--primary);
  background: var(--primary-light);
}

.checkbox-group input[type="checkbox"] {
  accent-color: var(--primary);
  width: 16px;
  height: 16px;
}

/* ========================================
   カラーコード変換
   ======================================== */
.color-preview-box {
  width: 100%;
  height: 120px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 20px;
  transition: background-color 0.2s ease;
}

.color-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.color-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.color-field label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-light);
}

.color-field input[type="text"] {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  outline: none;
  transition: border-color var(--transition);
}

.color-field input[type="text"]:focus {
  border-color: var(--primary);
}

.color-picker-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
}

.color-picker-wrap label {
  font-size: 0.85rem;
  font-weight: 600;
}

.color-picker-wrap input[type="color"] {
  width: 48px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  padding: 2px;
  background: var(--card-bg);
}

/* ========================================
   画像圧縮
   ======================================== */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 20px;
}

.compare-item {
  text-align: center;
}

.compare-item h4 {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-light);
}

.compare-item img {
  max-width: 100%;
  max-height: 250px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.compare-item .compare-info {
  margin-top: 6px;
  font-size: 0.78rem;
  color: var(--text-light);
}

.savings-badge {
  display: inline-block;
  background: #d4edda;
  color: #155724;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-top: 12px;
}

/* ========================================
   ランダム文字列
   ======================================== */
.random-list {
  margin-top: 20px;
  display: none;
  flex-direction: column;
  gap: 8px;
}

.random-list.show {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.random-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
}

.random-item .random-text {
  flex: 1;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.9rem;
  word-break: break-all;
  user-select: all;
}

.random-item .copy-btn {
  display: inline-flex;
  margin-top: 0;
  flex-shrink: 0;
}

.form-row {
  display: flex;
  gap: 16px;
  margin-top: 16px;
  flex-wrap: wrap;
  align-items: end;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-light);
}

.form-group input[type="number"],
.form-group select {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  outline: none;
  background: var(--card-bg);
  transition: border-color var(--transition);
}

.form-group input[type="number"]:focus,
.form-group select:focus {
  border-color: var(--primary);
}

/* ========================================
   レスポンシブ
   ======================================== */
@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .hero-cat .icon {
    width: 60px;
    height: 60px;
  }

  .tools-grid {
    grid-template-columns: 1fr;
  }

  .count-display {
    grid-template-columns: 1fr;
  }

  .size-inputs {
    flex-direction: column;
    align-items: stretch;
  }

  .size-inputs input[type="number"] {
    width: 100%;
  }

  .color-inputs {
    grid-template-columns: 1fr;
  }

  .compare-grid {
    grid-template-columns: 1fr;
  }

  .checkbox-group {
    flex-direction: column;
  }
}