/* --- 馬卡龍配色系統與CSS變數 --- */
:root {
    --macaron-mint: #e6faca;
    --macaron-mint-dark: #c1ebe5;
    --macaron-pink-light: #fff0f2;
    --macaron-pink: #fddfdf;
    --macaron-pink-dark: #fed7ed;
    --macaron-blue: #cfeaff;
    --macaron-blue-dark: #e9dcfb;
    --macaron-yellow: #fff6cf;
    --macaron-yellow-dark: #ffe1bd;
    --white: #FFFFFF;
  
    --bg-cream: #FAF9F6;
    --card-bg: #FFFFFF;
    --text-main: #495057;
    --text-muted: #868E96;
  
    --radius-lg: 20px;
    --radius-sm: 10px;
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
  }
  
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  }
  
  body {
    background-color: var(--bg-cream);
    color: var(--text-main);
    line-height: 1.6;
    padding-bottom: 40px;
  }
  
  /* 頁首 Header */
  .header {
    background: linear-gradient(150deg, var(--macaron-blue), var(--macaron-yellow), var(--macaron-pink));
    padding: 20px 15px;
    text-align: center;
    color: var(--text-main);
  }
  
  .header h1 {
    font-size: 1.8rem;
    margin-bottom: 8px;
  }
  
  .header p {
    font-size: 0.95rem;
    opacity: 0.85;
  }
  
  /* 主要容器 */
  .main-container {
    max-width: 750px;
    margin: 0 auto;
    padding: 0 15px;
  }
  
  /* 頁尾 */
  .footer {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 30px;
  }
  
  /* RWD 響應式佈局 */
  @media (max-width: 600px) {
    .form-grid {
      grid-template-columns: 1fr;
    }
    .input-group.full-width {
      grid-column: span 1;
    }
  }
  
  /* 列印樣式 */
  @media print {
    .header, .tab-nav, .no-print, .btn, .form-grid {
      display: none !important;
    }
    .tool-card {
      display: block !important;
      box-shadow: none;
      padding: 0;
    }
    body {
      background: white;
    }
  }