/* 共通ボタン */
.tool-btn {
    padding: 8px 16px;
    margin: 5px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.2s ease;
}
.tool-btn:hover {
    background-color: #45a049;
}

/* 共通テキストエリア */
.tool-textarea {
    width: 100%;
    font-family: monospace;
    padding: 6px;
    border-radius: 4px;
    border: 1px solid #ccc;
    box-sizing: border-box;
    resize: vertical;
}

/* 共通入力ボックス */
.tool-input {
    padding: 6px;
    border-radius: 4px;
    border: 1px solid #ccc;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 15px;
}

.tool-card {
  display: block;
  text-align: center;
  background: #fff;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s, box-shadow 0.2s;
}

.tool-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.tool-icon {
  font-size: 40px;
  margin-bottom: 10px;
}

.tool-title {
  font-weight: bold;
  font-size: 18px;
  margin-bottom: 5px;
}

.tool-desc {
  font-size: 14px;
  color: #555;
}


/* コンテナ中央寄せ */
.tool-container {
    max-width: 600px;
    margin: auto;
    text-align: center;
}

/* ===== ツール一覧グリッド ===== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 15px;
  margin-top: 20px;
}

/* ===== ツールカード ===== */
.tool-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: #ffffff;
  padding: 20px;
  border-radius: 15px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}

/* ===== アイコン ===== */
.tool-icon {
  font-size: 42px;
  margin-bottom: 10px;
}

/* ===== タイトル ===== */
.tool-title {
  font-weight: bold;
  font-size: 18px;
  margin-bottom: 6px;
}

/* ===== 説明文 ===== */
.tool-desc {
  font-size: 14px;
  color: #555;
  line-height: 1.4;
}

/* ===== タブレット対応 ===== */
@media (max-width: 1024px) {
  .tools-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
  }
  .tool-card {
    padding: 18px;
  }
  .tool-icon {
    font-size: 38px;
  }
  .tool-title {
    font-size: 17px;
  }
  .tool-desc {
    font-size: 13px;
  }
}

/* ===== スマホ対応 ===== */
@media (max-width: 600px) {
  .tools-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .tool-card {
    padding: 15px;
  }
  .tool-icon {
    font-size: 34px;
  }
  .tool-title {
    font-size: 15px;
  }
  .tool-desc {
    font-size: 12px;
  }
}

/* ===== ダークモード対応 ===== */
/*
@media (prefers-color-scheme: dark) {
  body {
    background: #121212;
    color: #e0e0e0;
  }
  .tool-card {
    background: #1e1e1e;
    box-shadow: 0 2px 8px rgba(0,0,0,0.5);
  }
  .tool-card:hover {
    box-shadow: 0 4px 14px rgba(0,0,0,0.6);
  }
  .tool-desc {
    color: #aaa;
  }
}
*/

