/* IEP 填寫小工具樣式表 */
/* ===================================== */

/* 基礎重置和字型設定 - 就像建築房子的地基 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Microsoft JhengHei', sans-serif;
  line-height: 1.6;
  color: #2E2E2E;
  background: linear-gradient(135deg, #003366 0%, #1A1F36 50%, #2E2E2E 100%);
  min-height: 100vh;
  padding: 20px;
}

/* 主容器 - 像是一個精美的畫框，包裹住內容 */
.container {
  max-width: 800px;
  margin: 0 auto;
  background: #F5F5F5;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 51, 102, 0.3);
  overflow: hidden;
  border: 1px solid rgba(102, 204, 255, 0.2);
}

/* 標題區域 - 像是店家的招牌，要醒目又優雅 */
.header {
  background: linear-gradient(135deg, #003366 0%, #1A1F36 100%);
  color: #F5F5F5;
  padding: 40px 30px;
  text-align: center;
  border-bottom: 3px solid #3399FF;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 8px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.subtitle {
  font-size: 1.1rem;
  opacity: 0.9;
  font-weight: 300;
}

/* Header 中的連結樣式 - 就像是夜空中閃亮的星星 */
.header a {
  color: #66CCFF;
  text-decoration: none;
  font-weight: 500;
  padding: 2px 6px;
  border-radius: 4px;
  position: relative;
  background: rgba(102, 204, 255, 0.1);
  border: 1px solid rgba(102, 204, 255, 0.3);
}

.header a:hover {
  color: #F5F5F5;
  background: rgba(102, 204, 255, 0.2);
  border-color: #66CCFF;
}

.header a:focus {
  outline: 2px solid #66CCFF;
  outline-offset: 2px;
}

/* 安全提示區域 - 就像是重要的安全標示牌 */
.security-notice {
  background: rgba(255, 193, 7, 0.1);
  border: 2px solid rgba(255, 193, 7, 0.3);
  border-left: 6px solid #ffc107;
  margin: 0;
  padding: 20px;
}

.notice-content h3 {
  color: #1A1F36;
  margin-bottom: 12px;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.notice-content p {
  color: #1A1F36;
  margin-bottom: 16px;
  line-height: 1.6;
  font-size: 0.95rem;
}

.notice-content strong {
  color: #d97706;
  font-weight: 600;
}

/* 清空資料按鈕 - 警告色設計 */
.clear-data-btn {
  background: #dc2626;
  color: white;
  border: 2px solid #dc2626;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
}

.clear-data-btn:hover {
  background: #ef4444;
  border-color: #ef4444;
}

.clear-data-btn:active {
  background: #b91c1c;
  border-color: #b91c1c;
}

/* 表單區域 - 就像是一張精心設計的問卷 */
.form-container {
  padding: 40px 30px;
}

.form-group {
  margin-bottom: 32px;
}

label {
  display: block;
  font-weight: 600;
  font-size: 1.1rem;
  color: #1A1F36;
  margin-bottom: 12px;
  position: relative;
  padding-left: 12px;
}

/* 為標籤加上小圓點裝飾 - 像是項目符號但更美觀 */
label::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: linear-gradient(135deg, #3399FF, #66CCFF);
  border-radius: 50%;
}

/* 欄位說明文字樣式 - 就像是貼心的小提示卡片 */
.field-description {
  background: rgba(102, 204, 255, 0.05);
  border: 1px solid rgba(51, 153, 255, 0.2);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 12px;
  font-size: 0.9rem;
  line-height: 1.6;
  color: #1A1F36;
  position: relative;
}

.field-description:hover {
  background: rgba(102, 204, 255, 0.1);
  border-color: rgba(51, 153, 255, 0.4);
  box-shadow: 0 2px 8px rgba(51, 153, 255, 0.1);
}

/* 說明文字中的粗體標題 */
.field-description strong {
  color: #003366;
  font-weight: 600;
  display: inline-block;
  margin-right: 4px;
}

/* 說明文字始終展開 */
.field-description {
  max-height: none;
  overflow: visible;
}

/* 文字輸入區域 - 像是一張舒適的書寫紙 */
textarea {
  width: 100%;
  min-height: 80px;
  padding: 16px;
  border: 2px solid rgba(51, 153, 255, 0.3);
  border-radius: 12px;
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.5;
  resize: vertical;
  background: #F5F5F5;
  color: #1A1F36;
}

textarea:focus {
  outline: none;
  border-color: #3399FF;
  background: white;
  box-shadow: 0 0 0 3px rgba(51, 153, 255, 0.1);
}

textarea:hover {
  border-color: #3399FF;
  background: white;
}

/* 提交按鈕 - 像是一個邀請用戶點擊的精美按鈕 */
.submit-container {
  text-align: center;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(51, 153, 255, 0.2);
}

.submit-btn {
  background: #3399FF;
  color: #F5F5F5;
  border: 2px solid #3399FF;
  padding: 16px 32px;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 12px;
  cursor: pointer;
  min-width: 200px;
}

.submit-btn:hover {
  background: #66CCFF;
  border-color: #66CCFF;
  color: #003366;
}

.submit-btn:active {
  background: #003366;
  border-color: #003366;
  color: #F5F5F5;
}

/* 輸出結果區域 - 像是一個展示櫥窗 */
.output-section {
  margin-top: 40px;
  padding: 30px;
  background: rgba(26, 31, 54, 0.05);
  border-top: 3px solid #3399FF;
}

.output-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: #1A1F36;
  margin-bottom: 20px;
  text-align: center;
}

#output {
  background: white;
  padding: 24px;
  border-radius: 12px;
  border: 2px solid rgba(51, 153, 255, 0.2);
  white-space: pre-wrap;
  font-family: 'Courier New', monospace;
  font-size: 0.95rem;
  line-height: 1.6;
  color: #1A1F36;
  min-height: 60px;
  box-shadow: 0 4px 12px rgba(51, 153, 255, 0.1);
}

/* 響應式設計 - 就像變形金剛，能適應不同環境 */

/* 平板設備 */
@media (max-width: 768px) {
  body {
    padding: 15px;
  }

  h1 {
    font-size: 2rem;
  }

  .header {
    padding: 30px 20px;
  }

  .form-container,
  .output-section {
    padding: 30px 20px;
  }

  .form-group {
    margin-bottom: 28px;
  }

  textarea {
    min-height: 70px;
    padding: 14px;
  }

  .field-description {
    padding: 14px;
    font-size: 0.85rem;
  }
}

/* 手機設備 */
@media (max-width: 480px) {
  body {
    padding: 10px;
  }

  .container {
    border-radius: 15px;
  }

  h1 {
    font-size: 1.8rem;
  }

  .subtitle {
    font-size: 1rem;
  }

  .header {
    padding: 25px 15px;
  }

  .form-container,
  .output-section {
    padding: 25px 15px;
  }

  .form-group {
    margin-bottom: 24px;
  }

  label {
    font-size: 1rem;
    margin-bottom: 10px;
  }

  textarea {
    min-height: 60px;
    padding: 12px;
    font-size: 16px; /* 防止 iOS 縮放 */
  }

  .submit-btn {
    width: 100%;
    padding: 14px 24px;
    font-size: 1rem;
  }

  .submit-container {
    margin-top: 30px;
    padding-top: 24px;
  }

  #output {
    padding: 20px;
    font-size: 0.9rem;
  }

  .field-description {
    padding: 12px;
    font-size: 0.8rem;
    margin-bottom: 10px;
  }

  /* 手機設備上的連結樣式調整 */
  .header a {
    padding: 4px 8px;
    font-size: 0.9rem;
    border-radius: 6px;
  }

  /* 手機設備上的安全提示調整 */
  .security-notice {
    padding: 15px;
  }

  .notice-content h3 {
    font-size: 1rem;
  }

  .notice-content p {
    font-size: 0.9rem;
  }

  .clear-data-btn {
    width: 100%;
    padding: 10px 16px;
  }
}

/* 極小螢幕設備 */
@media (max-width: 360px) {
  h1 {
    font-size: 1.6rem;
  }

  .form-container,
  .output-section {
    padding: 20px 12px;
  }

  textarea {
    padding: 10px;
  }

  #output {
    padding: 16px;
    font-size: 0.85rem;
  }
}

/* 深色模式支援 - 為喜歡深色主題的用戶準備 */
@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(135deg, #1A1F36 0%, #003366 50%, #2E2E2E 100%);
  }

  .container {
    background: #2E2E2E;
    color: #F5F5F5;
    border-color: rgba(102, 204, 255, 0.3);
  }

  .header {
    background: linear-gradient(135deg, #1A1F36 0%, #003366 100%);
    border-bottom-color: #66CCFF;
  }

  label {
    color: #F5F5F5;
  }

  textarea {
    background: #1A1F36;
    border-color: rgba(102, 204, 255, 0.4);
    color: #F5F5F5;
  }

  textarea:focus {
    background: #003366;
    border-color: #66CCFF;
    box-shadow: 0 0 0 3px rgba(102, 204, 255, 0.2);
  }

  textarea:hover {
    background: #003366;
    border-color: #66CCFF;
  }

  .output-section {
    background: rgba(26, 31, 54, 0.3);
    border-top-color: #66CCFF;
  }

  #output {
    background: #1A1F36;
    border-color: rgba(102, 204, 255, 0.4);
    color: #F5F5F5;
    box-shadow: 0 4px 12px rgba(102, 204, 255, 0.2);
  }

  .output-title {
    color: #F5F5F5;
  }

  .field-description {
    background: rgba(26, 31, 54, 0.6);
    border-color: rgba(102, 204, 255, 0.3);
    color: #F5F5F5;
  }

  .field-description:hover {
    background: rgba(26, 31, 54, 0.8);
    border-color: rgba(102, 204, 255, 0.5);
    box-shadow: 0 2px 8px rgba(102, 204, 255, 0.2);
  }

  .field-description strong {
    color: #66CCFF;
  }

  .submit-btn {
    background: #66CCFF;
    border-color: #66CCFF;
    color: #1A1F36;
  }

  .submit-btn:hover {
    background: #3399FF;
    border-color: #3399FF;
    color: #F5F5F5;
  }

  .submit-btn:active {
    background: #F5F5F5;
    border-color: #F5F5F5;
    color: #1A1F36;
  }

  /* 深色模式下的連結樣式 */
  .header a {
    color: #66CCFF;
    background: rgba(102, 204, 255, 0.1);
    border-color: rgba(102, 204, 255, 0.3);
  }

  .header a:hover {
    color: #F5F5F5;
    background: rgba(102, 204, 255, 0.2);
    border-color: #66CCFF;
  }

  .header a:focus {
    outline-color: #66CCFF;
  }

  /* 深色模式下的安全提示 */
  .security-notice {
    background: rgba(255, 193, 7, 0.15);
    border-color: rgba(255, 193, 7, 0.4);
    border-left-color: #fbbf24;
  }

  .notice-content h3,
  .notice-content p {
    color: #F5F5F5;
  }

  .notice-content strong {
    color: #fbbf24;
  }

  .clear-data-btn {
    background: #ef4444;
    border-color: #ef4444;
  }

  .clear-data-btn:hover {
    background: #f87171;
    border-color: #f87171;
  }
}

/* 高對比度無障礙支援 */
@media (prefers-contrast: high) {
  textarea {
    border-width: 3px;
  }
  
  .submit-btn {
    border: 2px solid #1f2937;
  }
}