/* ========== 全域變數與基礎樣式 ========== */
:root {
  --primary-color: #243d51;
  --highlight-color: #f8ef32;
  --main-font-color: #23396c;
  --secondary-font-color: #999999;
  --white-color: #ffffff;
  --primary-color-dark: #1a2d60;
  --main-font-color-rgb: 35, 57, 108;
  --secondary-blue-accent: #3a5a9a;
  --background-color-light: #fafafa;
  --general-border-color: #dddddd;
  --light-grey-bg: #f9f9f9;
  --modal-pre-bg: #f5f5f5;
  --error-red: #d32f2f;
  --warning-background: #f8d7da;
  --warning-text: #721c24;
  --disabled-button-bg: #6c757d;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --hover-shadow: 0 8px 20px rgba(var(--main-font-color-rgb), 0.3);
  --default-symbol-color: #e53e3e;
}

::selection {
  color: var(--highlight-color);
  background: var(--primary-color);
}

* {
  font-family: "Noto Sans HK", sans-serif;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  color: var(--main-font-color);
  background-color: var(--background-color-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a:link, a:visited, a:hover, a:active {
  color: var(--main-font-color);
  text-decoration: none;
}

a:hover, a:active {
  text-decoration: underline;
}

/* ========== Header 樣式 ========== */
header {
  width: 100%;
  background-color: var(--primary-color);
  color: var(--white-color);
  height: 74px;
  position: relative;
  z-index: 10;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  height: 100%;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white-color);
  user-select: none;
}

.site-icon {
  height: 80px;
  width: 200px;
  object-fit: contain;
  transition: var(--transition);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
}

.header-button {
  background: transparent;
  color: var(--background-color-light);
  border: 2px solid var(--background-color-light);
  border-radius: 6px;
  font-weight: 700;
  font-size: 14px;
  padding: 4px 12px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  height: 36px;
}

.header-button:hover,
.header-button:focus {
  background: var(--background-color-light);
  color: var(--main-font-color);
}

/* ========== Drawer 樣式 ========== */
.drawer {
  position: fixed;
  top: 0;
  right: -320px;
  width: 320px;
  height: 100vh;
  background: var(--white-color);
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
  z-index: 1100;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.drawer.open {
  right: 0;
}

.drawer-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 16px;
  border-bottom: 1px solid var(--general-border-color);
  font-weight: 700;
  font-size: 18px;
  color: var(--primary-color);
}

.drawer-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--secondary-font-color);
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.drawer-close:hover {
  color: var(--primary-color);
}

.drawer-item, .drawer-action-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.drawer-item:hover, .drawer-action-link:hover {
  background: var(--light-grey-bg);
  text-decoration: none;
}

.drawer-item i, .drawer-action-link i {
  font-size: 16px;
  width: 20px;
  text-align: center;
}

.drawer-action-link {
  color: var(--secondary-blue-accent);
  font-weight: 600;
}

.drawer hr {
  border: none;
  border-top: 1px solid var(--general-border-color);
  margin: 8px 0;
}

.copyright {
  margin-top: auto;
  padding: 20px 16px;
  text-align: center;
  font-size: 12px;
  color: var(--secondary-font-color);
  border-top: 1px solid var(--general-border-color);
}

/* ========== Main Container ========== */
.main-container {
  flex: 1;
  padding: 16px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* ========== 控制篩選器樣式 ========== */
.control-filter {
  display: none;
  background: var(--white-color);
  border-radius: 6px;
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  border: 1px solid var(--general-border-color);
}

.control-filter.open {
  display: block;
}

.filter-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.filter-title {
  font-weight: 700;
  font-size: 16px;
  color: var(--primary-color);
}

.close-filter {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--secondary-font-color);
  padding: 4px;
}

.close-filter:hover {
  color: var(--primary-color);
}

.tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-btn {
  padding: 6px 12px;
  border: 1px solid var(--general-border-color);
  background: var(--white-color);
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition);
}

.tag-btn.selected {
  background: var(--primary-color);
  color: var(--white-color);
  border-color: var(--primary-color);
}

/* ========== Modal 樣式 ========== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1200;
  align-items: center;
  justify-content: center;
}

.modal-overlay.show {
  display: flex;
}

.modal-content {
  background: var(--white-color);
  border-radius: 8px;
  padding: 24px;
  max-width: 500px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--hover-shadow);
}

.modal-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 8px;
}

/* ========== symbol-category-display 樣式 ========== */
#symbol-category-display {
  font-size: 14px;
  color: var(--primary-color);
  font-weight: 500;
  padding: 6px 12px;
  border: 2px solid var(--primary-color);
  border-radius: 4px;
  background: transparent;
  display: inline-block;
  margin-bottom: 8px;
  transition: var(--transition);
}

.modal-subtitle {
  font-size: 14px;
  color: var(--secondary-font-color);
  font-weight: 500;
}

.close-btn {
  background: var(--primary-color);
  color: var(--white-color);
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}

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

/* ========== Symbol 樣式 ========== */
.symbol {
  position: absolute;
  width: 36.8px;
  height: 36.8px;
  border-radius: 50%;
  background: var(--symbol-color-fade);
  border: 2px solid var(--symbol-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  transform: translate(-50%, -50%);
  z-index: 100;
}

.symbol:hover {
  transform: translate(-50%, -50%) scale(1.2);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.symbol i {
  color: #ffffff;
  font-size: 16px;
}

.symbol-tooltip {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-color);
  color: var(--white-color);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  margin-bottom: 8px;
}

.symbol:hover .symbol-tooltip {
  opacity: 1;
}

.symbol-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: var(--primary-color);
}

/* ========== default-message 樣式 ========== */
.default-message {
  font-size: 38px;
  font-weight: bold;
  display: block;
  margin: 20px 0;
  color: #243d51;
  text-align: center;
  opacity: 1;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.default-message span {
  color: #243d51;
  position: relative;
  display: inline-block;
  line-height: 1.2;
  z-index: 1;
  opacity: 1;
}

.default-message span::before {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 40%;
  background-color: #f8ef32;
  z-index: -1;
  border-radius: 2px;
}

/* ========== map-wrapper 樣式（修改版） ========== */
/* Desktop 尺寸與定位 - 繼承原 #bg-container 尺寸 */
.map-wrapper {
  position: relative;
  width: 100%;
  height: 680px;
  max-width: 2000px;
  margin: 0 auto 10px;
  box-sizing: border-box;
  /* 新增：隱藏溢出內容，啟用拖拽 */
  overflow: hidden;
  cursor: grab;
}

.map-wrapper:active {
  cursor: grabbing;
}

/* ========== bg-container 樣式（修正版） ========== */
#bg-container {
  /* 填滿 map-wrapper */
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  
  /* 繼承舊 #bg-container 的視覺樣式 */
  padding-left: 5px;
  padding-top: 5px;
  /* 修改：移除滾動條，改為隱藏溢出 */
  overflow: hidden;
  border: 2px dashed #ccc;
  background-color: #fff;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* ========== image-scale-container 拖拽支援 ========== */
#image-scale-container {
  position: relative;
  width: 100%;
  height: 100%;
  transform-origin: 0 0;
  transition: transform 0.3s ease;
  /* 新增：支援拖拽移動 */
  cursor: grab;
  user-select: none;
  /* 新增：確保容器正確計算尺寸 */
  min-width: 0;
  min-height: 0;
}

#image-scale-container.dragging {
  cursor: grabbing;
  transition: none;
}

/* ========== control-header 高度修正 ========== */
.control-header {
  height: auto;
  min-height: auto;
  display: block;
}

/* ========== Desktop 介面美化 ========== */
@media (min-width: 768px) {
  /* 修改1: 為 map_control_container 加入邊框 */
  .map_control_container {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    width: 100%;
    padding: 12px 16px;
    background: var(--white-color);
    border-radius: 6px;
    box-shadow: none;
    border: 1px solid var(--general-border-color);
    margin-bottom: 12px;
  }

  .map_project_info_div {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
  }

  .project-selector {
    width: 100%;
    padding: 8px 12px;
    font-size: 14px;
    border-radius: 4px;
    border: 1px solid var(--general-border-color);
    background-color: var(--white-color);
    color: #243d51;
    font-weight: 500;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23243d51' d='M1.41 0L6 4.59 10.59 0 12 1.41l-6 6-6-6z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 10px 6px;
    transition: var(--transition);
  }

  .project-selector:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(36, 61, 81, 0.1);
  }

  .project-notes {
    font-size: 12px;
    line-height: 1.3;
    color: #243d51;
    padding: 1px 0;
    font-weight: 500;
    margin: 0;
  }

  .project-last-modified {
    font-size: 10px;
    color: var(--secondary-font-color);
    padding: 0;
    font-weight: 400;
    margin: 0;
  }

  #toggle-filter-btn {
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 700;
    border-radius: 4px;
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    min-width: 80px;
    box-shadow: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: var(--transition);
    cursor: pointer;
    white-space: nowrap;
    height: 36px;
    margin: 0;
  }

  #toggle-filter-btn:hover {
    background: var(--primary-color);
    color: var(--white-color);
    border-color: var(--primary-color);
  }

  #toggle-filter-btn::before {
    content: "\f3ca";
    font-family: "bootstrap-icons";
    font-size: 12px;
    display: inline-block;
  }

  .zoom-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--white-color);
    padding: 6px 10px;
    border-radius: 4px;
    border: 1px solid var(--general-border-color);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
    white-space: nowrap;
    height: 36px;
    margin: 0;
  }

  .zoom-btn {
    width: 28px;
    height: 28px;
    border-radius: 3px;
    border: none;
    background: var(--light-grey-bg);
    color: #243d51;
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: var(--transition);
    margin: 0;
  }

  .zoom-btn:hover {
    background: var(--primary-color);
    color: var(--white-color);
  }

  .zoom-value {
    font-size: 12px;
    font-weight: 600;
    color: #243d51;
    min-width: 45px;
    text-align: center;
    margin: 0;
  }
}

/* ========== Mobile 介面調整 ========== */
@media (max-width: 767px) {
  /* 修改2: 為 map_control_container 加入邊框（移動介面） */
  .map_control_container {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    grid-template-rows: auto auto;
    gap: 10px;
    width: 100%;
    padding: 12px;
    background: var(--white-color);
    border-radius: 8px;
    box-shadow: none;
    border: 1px solid var(--general-border-color);
    margin-bottom: 12px;
  }

  /* 修改3: 將尺寸控制移動到 map-wrapper */
  .map-wrapper {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    aspect-ratio: 16 / 9;
    height: auto;
    position: relative;
    transition: all 0.3s ease;
    margin-bottom: 10px;
    /* 新增：移動端也隱藏溢出 */
    overflow: hidden;
    cursor: grab;
  }

  .map-wrapper:active {
    cursor: grabbing;
  }

  /* 展開狀態 */
  .map-wrapper.expanded {
    aspect-ratio: auto;
    height: 70vh;
    min-height: 400px;
  }

  /* 修正 #bg-container 填滿 wrapper */
  #bg-container {
    width: 100%;
    height: 100%;
    position: relative;
    /* 修改：移除滾動，改為隱藏 */
    overflow: hidden;
    /* Mobile-specific styles for #bg-container: */
    border: none;
    box-shadow: none;
    padding: 0;
    margin: 0;
  }
  
  /* 修正 #bg-container 的視覺樣式 */
  .map-wrapper #bg-container {
    border: 1px solid var(--general-border-color);
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  }

  /* ========== 展開按鈕樣式修正 ========== */
  .expand-toggle-btn {
    position: absolute;
    bottom: 10px;
    right: 10px;
    z-index: 10;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    border: 1px solid var(--general-border-color);
    background: var(--white-color);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  }

  .expand-toggle-btn:hover {
    background: var(--primary-color);
    color: var(--white-color);
    transform: scale(1.05);
  }

  .expand-toggle-btn i {
    font-size: 16px;
    transition: transform 0.3s ease;
  }

  .map-wrapper.expanded .expand-toggle-btn i {
    transform: rotate(180deg);
  }

  .map_project_info_div {
    grid-column: 1;
    grid-row: 1 / span 2;
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .project-selector {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    border-radius: 6px;
    border: 1px solid var(--general-border-color);
    background-color: var(--white-color);
    color: #243d51;
    font-weight: 500;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23243d51' d='M1.41 0L6 4.59 10.59 0 12 1.41l-6 6-6-6z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 10px 6px;
    transition: var(--transition);
    height: 42px;
    box-sizing: border-box;
  }

  .project-selector:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(36, 61, 81, 0.1);
  }

  .project-notes {
    font-size: 12px;
    line-height: 1.4;
    color: #243d51;
    padding: 1px 0;
    font-weight: 500;
    margin: 0;
  }

  .project-last-modified {
    font-size: 10px;
    color: var(--secondary-font-color);
    padding: 0;
    font-weight: 400;
    margin: 0;
  }

  #toggle-filter-btn {
    grid-column: 2;
    grid-row: 1;
    justify-self: end;
    align-self: flex-start;
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 700;
    border-radius: 6px;
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    width: 100%;
    min-width: auto;
    box-shadow: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: var(--transition);
    cursor: pointer;
    height: 42px;
    margin: 0;
  }

  #toggle-filter-btn:hover {
    background: var(--primary-color);
    color: var(--white-color);
    border-color: var(--primary-color);
  }

  #toggle-filter-btn::before {
    content: "\f3ca";
    font-family: "bootstrap-icons";
    font-size: 12px;
    display: inline-block;
  }

  .zoom-controls {
    grid-column: 2;
    grid-row: 2;
    justify-self: end;
    align-self: flex-end;
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--white-color);
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid var(--general-border-color);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    width: 100%;
    justify-content: center;
    height: 32px;
    margin: 0;
  }

  .zoom-btn {
    width : 28px;
    height: 28px;
    border-radius: 4px;
    border: none;
    background: var(--light-grey-bg);
    color: #243d51;
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: var(--transition);
    margin: 0;
  }

  .zoom-btn:hover {
    background: var(--primary-color);
    color: var(--white-color);
  }

  .zoom-value {
    font-size: 12px;
    font-weight: 600;
    color: #243d51;
    min-width: 40px;
    text-align: center;
    margin: 0;
  }
}

/* ========== 最終修正：徹底解決 default-message 永遠顯示問題 ========== */
#image-scale-container {
  position: relative;
  width: 100%;
  height: 100%;
  transform-origin: 0 0;
  transition: transform 0.3s ease;
}

/* 當背景圖存在或有符號時，強制隱藏 default-message */
#image-scale-container[style*="background-image: url"] .default-message,
#image-scale-container:has(.symbol) .default-message,
#bg-container.has-content .default-message {
  display: none !important;
}

/* ========== 修復 bg-container 和 symbol 樣式 - 保持 symbol 相關樣式 ========== */
/* #bg-container 的樣式已移至上方，此處不再重複定義 */

#image-scale-container {
  position: relative;
  transform-origin: 0 0;
  transition: transform 0.3s ease;
}

#image-scale-container .symbol {
  position: absolute;
  width: 36.8px;
  height: 36.8px;
  background: var(--symbol-color, var(--default-symbol-color));
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 6px 16px rgba(0,0,0,0.3);
  border: 4px solid white;
  outline: 3px solid var(--symbol-color, var(--default-symbol-color));
  transform: translate(-50%, -50%);
  z-index: 10;
  transition: all 0.3s ease;
}

#image-scale-container .symbol:hover {
  transform: translate(-50%, -50%) scale(1.3);
  z-index: 20;
}

#image-scale-container .symbol::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--symbol-color-fade, rgba(229, 62, 62, 0.3));
  animation: symbol-pulse 2s infinite;
  z-index: -1;
}

@keyframes symbol-pulse {
  0% { transform: scale(1); opacity: 0.8; }
  70% { transform: scale(2); opacity: 0; }
  100% { transform: scale(2); opacity: 0; }
}

#image-scale-container .symbol-tooltip {
  position: absolute;
  bottom: 130%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(35, 57, 108, 0.95);
  color: white;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.8rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  pointer-events: none;
}

#image-scale-container .symbol:hover .symbol-tooltip {
  opacity: 1;
  visibility: visible;
  bottom: 140%;
}

.default-message {
  font-size: 2rem;
  color: var(--secondary-font-color);
  text-align: center;
  padding: 2rem;
  font-weight: 500;
  opacity: 1;
  display: none;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
}

#bg-container:not(.has-content) .default-message {
  display: block;
}

/* ========== 移動端適配修復 ========== */
@media (max-width: 768px) {
  /* #bg-container 的寬度和邊距已移至 map-wrapper 處理 */
  
  #image-scale-container .symbol {
    width: 28.8px;
    height: 28.8px;
    font-size: 1.2rem;
    border: 3px solid white;
    outline: 2px solid var(--symbol-color, var(--default-symbol-color));
  }
}