/* ========== 基礎設定 ========== */
:root {
  --color-bg: #f0ebe3;
  --color-bg-light: #f7f5f0;
  --color-bg-dark: #1a1a1a;
  --color-bg-card: #ffffff;
  --color-border: #d5cec3;
  --color-text: #2a2a2a;
  --color-text-light: #f0ebe3;
  --color-text-muted: #7a756d;
  --color-accent: #5c5040;
  --color-accent-gold: #b8965a;
  --color-accent-hover: #4a4035;
  --font-main: 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.16);
  --transition: 0.25s ease;
  --max-width: 1200px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  min-height: 100vh;
}

/* ========== 主佈局 ========== */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.view {
  flex: 1;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ========== 首頁標題區 ========== */
.hero {
  text-align: center;
  padding: 4rem 2rem 3rem;
  background: linear-gradient(180deg, var(--color-bg-light) 0%, var(--color-bg) 100%);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.4em;
  margin-bottom: 0.5rem;
  text-shadow: 2px 2px 0 rgba(255,255,255,0.8);
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  letter-spacing: 0.3em;
  margin-bottom: 2rem;
}

.search-box {
  max-width: 400px;
  margin: 0 auto;
}

.search-input {
  width: 100%;
  padding: 0.875rem 1.25rem;
  font-size: 0.95rem;
  font-family: var(--font-main);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg-card);
  color: var(--color-text);
  transition: var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(92, 80, 64, 0.1);
}

.search-input::placeholder {
  color: var(--color-text-muted);
}

/* ========== 大項目導航 ========== */
.categories-nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.categories-row {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.category-tab {
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.category-tab:hover {
  color: var(--color-text);
  background: var(--color-bg-card);
  border-color: var(--color-border);
}

.category-tab.active {
  color: var(--color-text-light);
  background: var(--color-bg-dark);
  border-color: var(--color-bg-dark);
}

/* ========== 分類內容區 ========== */
.category-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 2rem;
}

.category-info {
  text-align: center;
  margin-bottom: 2.5rem;
}

.category-name {
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.2em;
  margin-bottom: 0.75rem;
}

.category-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  max-width: 500px;
  margin: 0 auto;
}

.subcategories-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem;
}

.subcat-card {
  width: 180px;
}

.subcat-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 2rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.subcat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.subcat-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: auto;
  margin-right: auto;
  overflow: hidden;
  border-radius: 8px;
}

.subcat-icon img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.subcat-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.subcat-count {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ========== 小項目視圖 ========== */
.items-header {
  background: var(--color-bg-dark);
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.back-btn {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-family: var(--font-main);
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 6px;
  color: var(--color-text-light);
  cursor: pointer;
  transition: var(--transition);
}

.back-btn:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
}

.items-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-light);
  letter-spacing: 0.1em;
}

.type-tabs-wrapper {
  background: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
  padding: 0 2rem;
}

.type-tabs {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  gap: 0;
}

.type-tab {
  padding: 1rem 2rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}

.type-tab:hover {
  color: var(--color-text);
}

.type-tab.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.items-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem;
}

/* 子分類區塊 */
.subcategory-section {
  margin-bottom: 3rem;
}

.subcategory-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.subcategory-title::before {
  content: '';
  width: 4px;
  height: 1.25rem;
  background: var(--color-accent-gold);
  border-radius: 2px;
}

/* 收集品網格 */
.items-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.item-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.item-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  border-color: var(--color-accent);
}

.item-card-img {
  max-width: 80px;
  max-height: 80px;
  object-fit: contain;
  border-radius: 6px;
  margin-bottom: 0.5rem;
}

.item-card-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
}

.item-card-text-only {
  padding: 1.25rem 1rem;
}

.item-card-location {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ========== 彈窗 ========== */
.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 2rem;
}

.modal.show {
  display: flex;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: var(--color-bg);
  border-radius: 16px;
  max-width: 700px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  border: none;
  background: var(--color-bg-light);
  border-radius: 50%;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
}

.modal-body {
  padding: 2.5rem;
}

.detail-name {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  letter-spacing: 0.1em;
}

.detail-image {
  max-width: 200px;
  max-height: 200px;
  object-fit: contain;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  background: var(--color-bg-light);
}

.detail-desc {
  font-size: 0.95rem;
  line-height: 2;
  color: var(--color-text);
  white-space: pre-wrap;
  padding: 1.5rem;
  background: var(--color-bg-light);
  border-radius: 10px;
  margin-bottom: 1.5rem;
}

.detail-section {
  margin-bottom: 1.25rem;
}

.detail-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.375rem;
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.detail-label::before {
  content: '▸';
  color: var(--color-accent-gold);
}

.detail-value {
  font-size: 0.95rem;
  color: var(--color-text);
  padding-left: 1rem;
}

.detail-images {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
  padding-left: 1rem;
}

.detail-images img {
  max-width: 300px;
  max-height: 200px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: var(--transition);
}

.detail-images img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-sm);
}

/* ========== 頁尾 ========== */
.footer {
  background: var(--color-bg-dark);
  padding: 1.5rem;
  text-align: center;
}

.footer-title {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
  letter-spacing: 0.1em;
}

.editor-btn {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--color-text-light);
  padding: 0.5rem 1.25rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-family: var(--font-main);
  cursor: pointer;
  transition: var(--transition);
}

.editor-btn:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
}

/* 編輯者彈窗 */
#editorModal .modal-box {
  background: var(--color-bg-card);
  border-radius: 12px;
  padding: 2rem;
  max-width: 400px;
  width: 90%;
  position: relative;
}

.modal-close-btn {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  cursor: pointer;
  line-height: 1;
}

.modal-close-btn:hover {
  color: var(--color-text);
}

.editor-section-title {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
  font-weight: 500;
}

.editor-main {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.editor-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
}

.editor-social {
  display: flex;
  gap: 0.5rem;
}

.editor-social .social-link {
  color: var(--color-text-muted);
  transition: var(--transition);
}

.editor-social .social-link:hover {
  color: var(--color-accent);
}

.thanks-title {
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.editor-helpers {
  min-height: 2rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ========== 響應式 ========== */
@media (max-width: 768px) {
  .hero {
    padding: 3rem 1.5rem 2rem;
  }

  .hero-title {
    font-size: 2.5rem;
    letter-spacing: 0.2em;
  }

  .categories-nav {
    padding: 0 1rem;
  }

  .category-tab {
    padding: 0.6rem 1rem;
    font-size: 0.85rem;
  }

  .category-content {
    padding: 2rem 1rem;
  }

  .category-name {
    font-size: 1.5rem;
  }

  .subcategories-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1rem;
  }

  .items-header {
    padding: 1rem;
  }

  .type-tabs-wrapper {
    padding: 0 1rem;
    overflow-x: auto;
  }

  .items-content {
    padding: 1.5rem 1rem;
  }

  .items-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .modal {
    padding: 1rem;
  }

  .modal-body {
    padding: 1.5rem;
  }

  .detail-name {
    font-size: 1.5rem;
  }

  .detail-images img {
    max-width: 100%;
  }
}