/* ==========================================
   ARCA DESIGN SYSTEM - SWISS EDITORIAL STYLE
   ========================================== */

/* 01｜全域變數與重設 */
:root {
  --color-bg: #F7F7F5;
  --color-panel: #EFEFED;
  --color-text-primary: #111111;
  --color-text-secondary: #A8A8A5;
  --color-accent: #0038FF; /* 皇家克萊因藍 */
  
  --font-sans: 'Inter', 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --spacing-margin-desktop: 48px;
  --spacing-margin-mobile: 20px;
  --header-height: 72px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  border-radius: 0 !important; /* 強制所有元素直角，無圓角 */
}

html, body {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 300ms ease;
}

a:hover {
  opacity: 0.8;
}

button, select, input, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
}

button {
  cursor: pointer;
}

/* ==========================================
   02｜GRID SYSTEM (12 Column Layout)
   ========================================== */
.grid-layout {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
  padding-left: var(--spacing-margin-desktop);
  padding-right: var(--spacing-margin-desktop);
  width: 100%;
}

@media (max-width: 1024px) {
  .grid-layout {
    grid-template-columns: repeat(8, 1fr);
    padding-left: 32px;
    padding-right: 32px;
  }
}

@media (max-width: 768px) {
  .grid-layout {
    grid-template-columns: repeat(4, 1fr);
    padding-left: var(--spacing-margin-mobile);
    padding-right: var(--spacing-margin-mobile);
    gap: 16px;
  }
}

/* 1px 細線分隔線 */
.section-divider {
  width: 100%;
  margin-top: 48px;
  margin-bottom: 48px;
}

.divider-line {
  grid-column: 1 / -1;
  height: 1px;
  background-color: var(--color-text-primary);
  opacity: 1;
}

/* ==========================================
   03｜TYPOGRAPHY (瑞士國際風格)
   ========================================== */
.page-large-title {
  grid-column: 1 / -1;
  font-size: 80px;
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.section-title {
  font-size: 40px;
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

@media (max-width: 768px) {
  .page-large-title {
    font-size: 48px;
  }
  .section-title {
    font-size: 28px;
  }
}

/* ==========================================
   04｜BUTTONS (Brutalist Style)
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 32px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: all 300ms ease;
  border: 1px solid var(--color-text-primary);
}

.btn-black {
  background-color: var(--color-text-primary);
  color: var(--color-bg);
}

.btn-black:hover {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text-primary);
}

.btn-outline:hover {
  background-color: var(--color-text-primary);
  color: var(--color-bg);
}

.btn-large {
  height: 56px;
  font-size: 14px;
}

.btn-text-link {
  display: inline-flex;
  align-items: center;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-bottom: 2px solid var(--color-text-primary);
  padding-bottom: 4px;
}

.btn-text-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn:disabled {
  border-color: var(--color-text-secondary);
  color: var(--color-text-secondary);
  background-color: transparent;
  cursor: not-allowed;
}

/* ==========================================
   05｜HEADER & FOOTER (導覽與頁尾)
   ========================================== */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 100;
  border-bottom: 1px solid var(--color-text-primary);
  background-color: transparent;
  transition: background-color 400ms ease;
}

.header-scrolled {
  background-color: var(--color-bg);
}

.header-container {
  height: 100%;
  align-items: center;
}

.header-logo {
  grid-column: 1 / 3;
}

.logo-text {
  font-size: 26px;
  font-weight: 900;
  letter-spacing: -0.05em;
}

.header-nav {
  grid-column: 3 / 11;
  display: flex;
  justify-content: center;
  gap: 32px;
}

.nav-link {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  padding: 8px 0;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-primary);
}

.header-actions {
  grid-column: 11 / 13;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 18px;
}

.action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  position: relative;
}

.action-btn:hover {
  color: var(--color-accent);
}

.cart-btn-badge {
  position: relative;
}

.cart-count-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-size: 9px;
  font-weight: 900;
  width: 15px;
  height: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.admin-badge {
  position: absolute;
  top: -12px;
  right: -10px;
  background-color: var(--color-text-primary);
  color: var(--color-bg);
  font-size: 8px;
  font-weight: 900;
  padding: 1px 4px;
}

/* 行動版漢堡排 */
.mobile-only {
  display: none !important;
}

.desktop-only {
  display: flex !important;
}

@media (max-width: 1024px) {
  .header-logo { grid-column: 1 / 3; }
  .header-nav { display: none !important; }
  .header-actions { grid-column: 3 / -1; }
  .mobile-only { display: flex !important; }
  .desktop-only { display: none !important; }
}

.hamburger-line {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-text-primary);
  margin: 4px 0;
  transition: transform 300ms ease;
}

.menu-active .hamburger-line:nth-child(1) {
  transform: translateY(3px) rotate(45deg);
}

.menu-active .hamburger-line:nth-child(2) {
  transform: translateY(-3px) rotate(-45deg);
}

/* 行動選單 Overlay */
.mobile-menu-overlay {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--header-height));
  background-color: var(--color-bg);
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: all 400ms cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
}

.mobile-menu-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-content {
  padding: 40px var(--spacing-margin-mobile);
}

.mobile-menu-links {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.mobile-nav-link {
  font-size: 28px;
  font-weight: 900;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.mobile-menu-divider {
  height: 1px;
  background-color: var(--color-text-primary);
  margin: 12px 0;
}

.mobile-nav-link.sub-link {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-secondary);
}

/* FOOTER 樣式 */
.main-footer {
  background-color: var(--color-text-primary);
  color: var(--color-bg);
  padding-top: 80px;
  padding-bottom: 40px;
  margin-top: 120px;
}

.footer-grid {
  row-gap: 48px;
}

.footer-brand-column {
  grid-column: 1 / 5;
}

.footer-brand-title {
  font-size: 48px;
  font-weight: 900;
  letter-spacing: -0.05em;
  margin-bottom: 24px;
}

.footer-brand-manifesto {
  font-size: 14px;
  font-weight: 300;
  line-height: 1.8;
  opacity: 0.8;
}

.footer-links-column {
  grid-column: span 2;
}

.footer-link-title {
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
  opacity: 0.5;
}

.footer-link-list {
  list-style: none;
}

.footer-link-list li {
  margin-bottom: 12px;
}

.footer-link-list a {
  font-size: 13px;
  opacity: 0.8;
}

.footer-link-list a:hover {
  opacity: 1;
}

.footer-social-col {
  grid-column: span 2;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 80px;
  padding-top: 32px;
  font-size: 12px;
  opacity: 0.5;
}

.footer-copyright {
  grid-column: 1 / 7;
}

.footer-legal {
  grid-column: 7 / 13;
  display: flex;
  justify-content: flex-end;
  gap: 24px;
}

@media (max-width: 1024px) {
  .footer-brand-column { grid-column: 1 / -1; }
  .footer-links-column { grid-column: span 4; }
  .footer-social-col { grid-column: span 4; }
}

@media (max-width: 768px) {
  .footer-links-column { grid-column: span 2; }
  .footer-copyright { grid-column: 1 / -1; }
  .footer-legal { grid-column: 1 / -1; justify-content: flex-start; margin-top: 8px;}
}

/* ==========================================
   06｜APP MAIN CONTENT AREA & VIEWS
   ========================================== */
.main-content-area {
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height) - 400px);
}

/* 頁面淡入轉場動畫 */
.page-enter {
  animation: pageFadeIn 600ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes pageFadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================
   07｜HOME PAGE VIEWS (首頁排版)
   ========================================== */
.home-hero {
  margin-top: 24px;
}

.hero-grid {
  align-items: stretch;
  min-height: calc(100vh - var(--header-height) - 48px);
}

.hero-image-col {
  grid-column: 1 / 8;
  background-color: var(--color-panel);
  overflow: hidden;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-text-col {
  grid-column: 8 / 13;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-left: 24px;
}

.hero-caption {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
}

.hero-title {
  font-size: 84px;
  font-weight: 900;
  line-height: 0.85;
  letter-spacing: -0.04em;
  margin-top: 16px;
  margin-bottom: 32px;
}

.hero-description {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 40px;
  opacity: 0.8;
}

.hero-coordinates {
  display: flex;
  flex-direction: column;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
  opacity: 0.4;
  margin-top: 48px;
}

@media (max-width: 1024px) {
  .hero-image-col { grid-column: 1 / -1; }
  .hero-text-col { grid-column: 1 / -1; padding-left: 0; margin-top: 32px;}
  .hero-title { font-size: 64px; }
}

/* 分類網格 */
.section-header-row {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 32px;
}

.section-header-right {
  display: flex;
  align-items: center;
  gap: 32px;
}

.section-num {
  font-size: 13px;
  font-weight: 900;
  opacity: 0.3;
}

.categories-editorial-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.category-editorial-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-text-primary);
}

.category-card-media {
  aspect-ratio: 4 / 5;
  background-color: var(--color-panel);
  overflow: hidden;
}

.category-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.category-editorial-card:hover .category-img {
  transform: scale(1.04);
}

.category-card-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-top: 1px solid var(--color-text-primary);
  background-color: var(--color-bg);
}

.category-en {
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.category-zh {
  font-size: 13px;
  font-weight: 700;
}

@media (max-width: 768px) {
  .categories-editorial-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .categories-editorial-grid {
    grid-template-columns: 1fr;
  }
}

/* 4欄商品網格 */
.products-grid-4-col {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

@media (max-width: 1024px) {
  .products-grid-4-col {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .products-grid-4-col {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

/* 04｜EDITORIAL CAMPAIGN (首頁圖文故事版塊) */
.home-editorial-campaign {
  background-color: var(--color-panel);
  padding: 80px 0;
  margin: 80px 0;
}

.editorial-campaign-grid {
  align-items: center;
}

.editorial-text-col {
  grid-column: 1 / 6;
  display: flex;
  flex-direction: column;
}

.editorial-badge {
  font-size: 11px;
  font-weight: 900;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}

.editorial-heading {
  font-size: 64px;
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.04em;
  margin-bottom: 32px;
}

.editorial-description {
  font-size: 15px;
  line-height: 1.8;
  opacity: 0.8;
}

.editorial-image-col {
  grid-column: 7 / 13;
}

.editorial-campaign-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.image-footnote {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  font-weight: 700;
  opacity: 0.4;
  margin-top: 12px;
}

@media (max-width: 1024px) {
  .editorial-text-col { grid-column: 1 / -1; margin-bottom: 48px; }
  .editorial-image-col { grid-column: 1 / -1; }
  .editorial-heading { font-size: 44px; }
}

/* 06｜BRAND STATEMENT BLACK (首頁黑色大宣言) */
.home-statement-black {
  background-color: var(--color-text-primary);
  color: var(--color-bg);
  padding: 120px 0;
  margin: 100px 0;
  text-align: center;
}

.statement-content {
  grid-column: 3 / 11;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.statement-badge {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.05em;
  opacity: 0.5;
  margin-bottom: 24px;
}

.statement-quote {
  font-size: 40px;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 32px;
}

.statement-author {
  font-size: 15px;
  font-weight: 300;
  line-height: 1.8;
  opacity: 0.7;
  max-width: 600px;
}

@media (max-width: 768px) {
  .statement-content { grid-column: 1 / -1; }
  .statement-quote { font-size: 24px; }
}

/* 07｜LOOKBOOK TEASER (首頁穿搭) */
.lookbook-teaser-row {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.lookbook-teaser-card {
  display: flex;
  flex-direction: column;
}

.lookbook-teaser-img-wrapper {
  aspect-ratio: 4 / 5;
  background-color: var(--color-panel);
  overflow: hidden;
}

.lookbook-teaser-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms ease;
}

.lookbook-teaser-card:hover .lookbook-teaser-img {
  transform: scale(1.02);
}

.lookbook-teaser-info {
  margin-top: 16px;
}

.lookbook-teaser-title {
  font-size: 16px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.lookbook-teaser-sub {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .lookbook-teaser-row {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* 08｜JOURNAL TEASER (首頁部落格) */
.journal-teaser-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.journal-teaser-card {
  display: flex;
  flex-direction: column;
}

.journal-teaser-img-wrapper {
  aspect-ratio: 16 / 10;
  background-color: var(--color-panel);
  overflow: hidden;
}

.journal-teaser-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.journal-teaser-meta {
  margin-top: 16px;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.journal-teaser-card-title {
  font-size: 18px;
  font-weight: 900;
  margin-top: 8px;
  margin-bottom: 12px;
}

.journal-teaser-summary {
  font-size: 13px;
  opacity: 0.8;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (max-width: 768px) {
  .journal-teaser-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

/* 09｜NEWSLETTER */
.home-newsletter {
  margin-top: 80px;
}

.newsletter-grid {
  grid-column: 1 / -1;
  border: 1px solid var(--color-text-primary);
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  padding: 60px 48px;
  background-color: var(--color-bg);
}

.newsletter-text {
  grid-column: 1 / 7;
}

.newsletter-title {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.newsletter-desc {
  font-size: 14px;
  opacity: 0.7;
}

.newsletter-form {
  grid-column: 8 / 13;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.input-group-brutalist {
  display: flex;
  border: 1px solid var(--color-text-primary);
}

.input-group-brutalist input {
  flex: 1;
  height: 48px;
  padding: 0 16px;
  font-size: 13px;
  background-color: var(--color-bg);
}

.input-group-brutalist input:focus {
  outline: none;
}

.input-group-brutalist .btn {
  border: none;
  border-left: 1px solid var(--color-text-primary);
}

.newsletter-message {
  font-size: 12px;
  margin-top: 8px;
  font-weight: 700;
}

.newsletter-message.success {
  color: var(--color-accent);
}

@media (max-width: 1024px) {
  .newsletter-text { grid-column: 1 / -1; margin-bottom: 32px; }
  .newsletter-form { grid-column: 1 / -1; }
  .newsletter-grid { padding: 32px var(--spacing-margin-mobile); }
}

/* ==========================================
   08｜PRODUCT CARD COMPONENT (商品卡片)
   ========================================== */
.product-card {
  display: flex;
  flex-direction: column;
}

.product-card-media-wrapper {
  aspect-ratio: 4 / 5;
  background-color: var(--color-panel);
  position: relative;
  overflow: hidden;
}

.product-card-link {
  display: block;
  width: 100%;
  height: 100%;
  position: relative;
}

.product-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
  transition: opacity 500ms ease;
}

.img-secondary {
  opacity: 0;
}

.product-card:hover .img-secondary {
  opacity: 1;
}

.product-card:hover .img-primary {
  opacity: 0;
}

.product-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background-color: var(--color-text-primary);
  color: var(--color-bg);
  font-size: 9px;
  font-weight: 900;
  padding: 2px 6px;
  letter-spacing: 0.05em;
}

.tag-new {
  background-color: var(--color-accent);
  color: #FFFFFF;
}

.tag-soldout {
  background-color: var(--color-text-secondary);
}

.wishlist-btn-toggle {
  position: absolute;
  top: 12px;
  right: 12px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-text-primary);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  transition: all 200ms ease;
}

.wishlist-btn-toggle:hover {
  color: var(--color-accent);
}

.wishlist-btn-toggle.active {
  background-color: var(--color-text-primary);
  color: var(--color-bg);
}

.product-card-info {
  margin-top: 16px;
}

.product-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.product-card-english-title {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.product-card-price {
  font-size: 14px;
  font-weight: 700;
}

.price-original.sale-line {
  text-decoration: line-through;
  color: var(--color-text-secondary);
  font-size: 11px;
  margin-right: 6px;
}

.price-sale {
  color: var(--color-accent);
}

.product-card-chinese-subtitle {
  font-size: 13px;
  opacity: 0.7;
  margin-top: 2px;
}

.product-card-category-label {
  font-size: 10px;
  font-weight: 900;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  margin-top: 8px;
  display: block;
}

/* ==========================================
   09｜SHOP / CATEGORY VIEW (商品列表)
   ========================================== */
.shop-header-section {
  margin-top: 40px;
}

.shop-header-title-row {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.shop-product-counter {
  font-size: 13px;
  font-weight: 900;
  opacity: 0.4;
  margin-bottom: 12px;
}

.shop-sub-nav {
  grid-column: 1 / -1;
  border-top: 1px solid var(--color-text-primary);
  border-bottom: 1px solid var(--color-text-primary);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding: 16px 0;
  margin-top: 24px;
}

.shop-sub-nav-btn {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.5;
  transition: opacity 200ms ease;
  padding: 6px 12px;
  border: 1px solid transparent;
}

.shop-sub-nav-btn.active {
  opacity: 1;
  border-color: var(--color-text-primary);
}

.shop-sub-nav-btn:hover {
  opacity: 0.8;
}

.shop-layout-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  align-items: start;
}

/* 篩選側邊欄 */
.shop-sidebar-filters {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.sidebar-filter-group {
  padding-bottom: 24px;
}

.filter-group-title {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  opacity: 0.5;
}

.filter-options-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.filter-radio-label {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-size: 13px;
}

.filter-radio-label input {
  margin-right: 10px;
  accent-color: var(--color-text-primary);
}

.sidebar-divider {
  height: 1px;
  background-color: var(--color-text-primary);
  opacity: 0.1;
  margin-bottom: 24px;
}

.products-grid-3-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.shop-empty-state {
  grid-column: 1 / -1;
  padding: 100px 0;
  text-align: center;
  font-size: 15px;
  color: var(--color-text-secondary);
}

@media (max-width: 1024px) {
  .shop-layout-grid {
    grid-template-columns: 180px 1fr;
    gap: 24px;
  }
  .products-grid-3-col {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .shop-layout-grid {
    grid-template-columns: 1fr;
  }
  .shop-sidebar-filters {
    display: none;
  }
  .shop-sidebar-filters.mobile-visible {
    display: block;
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: var(--color-bg);
    z-index: 80;
    padding: 32px var(--spacing-margin-mobile);
    overflow-y: auto;
  }
  .mobile-filter-bar {
    display: flex !important;
    margin-bottom: 24px;
  }
}

/* ==========================================
   10｜PRODUCT DETAIL VIEW (商品詳細頁)
   ========================================== */
.product-detail-section {
  margin-top: 40px;
}

.product-detail-layout-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: start;
}

/* 左側圖片流 */
.product-images-gallery {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.gallery-image-wrapper {
  background-color: var(--color-panel);
}

.gallery-scroll-img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  display: block;
}

/* 右側 Sticky 面板 */
.product-info-sticky-panel {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.detail-category-tag {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--color-accent);
}

.detail-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
}

.detail-english-title {
  font-size: 40px;
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.03em;
}

.detail-wish-btn {
  border: 1px solid var(--color-text-primary);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 200ms ease;
}

.detail-wish-btn.active {
  background-color: var(--color-text-primary);
  color: var(--color-bg);
}

.detail-chinese-title {
  font-size: 18px;
  font-weight: 700;
  opacity: 0.7;
  margin-top: 4px;
}

.detail-price-box {
  font-size: 24px;
  font-weight: 900;
  margin-top: 16px;
}

.detail-price-original {
  text-decoration: line-through;
  color: var(--color-text-secondary);
  font-size: 16px;
  margin-right: 12px;
}

.detail-price-sale {
  color: var(--color-accent);
}

.detail-divider {
  height: 1px;
  background-color: var(--color-text-primary);
  margin: 24px 0;
}

.detail-description-box {
  font-size: 15px;
  line-height: 1.8;
  opacity: 0.85;
}

/* 規格選擇表單 */
.purchase-form-group {
  margin-bottom: 24px;
}

.form-group-label {
  display: block;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.color-options-radio-grid, .size-options-radio-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.color-radio-option input, .size-radio-option input {
  display: none;
}

.color-radio-styled-btn, .size-radio-styled-btn {
  display: inline-block;
  border: 1px solid var(--color-text-primary);
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  background-color: var(--color-bg);
  transition: all 200ms ease;
}

.color-radio-option input:checked + .color-radio-styled-btn,
.size-radio-option input:checked + .size-radio-styled-btn {
  background-color: var(--color-text-primary);
  color: var(--color-bg);
}

/* 數量選擇器 */
.quantity-controller {
  display: inline-flex;
  border: 1px solid var(--color-text-primary);
  align-items: center;
}

.qty-btn {
  width: 36px;
  height: 36px;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qty-btn:hover {
  background-color: var(--color-panel);
}

.qty-val {
  min-width: 36px;
  text-align: center;
  font-size: 14px;
  font-weight: 700;
}

.qty-input-field {
  width: 44px;
  text-align: center;
  font-size: 14px;
  font-weight: 700;
  border: none;
  background: none;
}

.qty-input-field::-webkit-inner-spin-button, 
.qty-input-field::-webkit-outer-spin-button { 
  -webkit-appearance: none; 
  margin: 0; 
}

.large-qty .qty-btn {
  width: 44px;
  height: 44px;
}

.stock-info-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-secondary);
  margin-left: 16px;
}

.purchase-actions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}

@media (max-width: 480px) {
  .purchase-actions-grid {
    grid-template-columns: 1fr;
  }
}

/* 手風琴 Accordion */
.accordion-item {
  border-bottom: 1px solid var(--color-text-primary);
}

.accordion-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.05em;
  text-align: left;
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

.accordion-item.active .accordion-content {
  max-height: 500px;
}

.accordion-content-inner {
  padding-bottom: 24px;
  font-size: 13px;
  line-height: 1.8;
  opacity: 0.8;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
}

.specs-table th, .specs-table td {
  padding: 8px 0;
  text-align: left;
  border-bottom: 1px dashed rgba(17,17,17,0.1);
}

.specs-table th {
  width: 100px;
  font-weight: 700;
}

@media (max-width: 1024px) {
  .product-detail-layout-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .product-info-sticky-panel {
    position: relative;
    top: 0;
  }
}

/* ==========================================
   11｜CART DRAWER & OVERLAY (購物袋側邊欄)
   ========================================== */
.cart-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(17,17,17,0.4);
  z-index: 199;
  opacity: 0;
  visibility: hidden;
  transition: all 400ms ease;
  backdrop-filter: blur(2px);
}

.cart-backdrop.visible {
  opacity: 1;
  visibility: visible;
}

.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 480px;
  height: 100%;
  background-color: var(--color-bg);
  z-index: 200;
  border-left: 1px solid var(--color-text-primary);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.cart-drawer.visible {
  transform: translateX(0);
}

@media (max-width: 480px) {
  .cart-drawer {
    width: 100%;
  }
}

.cart-drawer-header {
  padding: 24px;
  border-bottom: 1px solid var(--color-text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.drawer-title {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.cart-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

.empty-cart-message {
  text-align: center;
  padding: 64px 0;
  font-size: 15px;
  color: var(--color-text-secondary);
}

/* 購物車品項 */
.cart-drawer-item {
  display: flex;
  gap: 16px;
  padding-bottom: 24px;
  margin-bottom: 24px;
  border-bottom: 1px solid rgba(17,17,17,0.1);
}

.cart-item-image {
  width: 80px;
  aspect-ratio: 4 / 5;
  background-color: var(--color-panel);
  overflow: hidden;
}

.cart-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cart-item-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.cart-item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.cart-item-title {
  font-size: 15px;
  font-weight: 900;
}

.cart-item-subtitle {
  font-size: 12px;
  opacity: 0.6;
}

.cart-item-remove-btn {
  color: var(--color-text-secondary);
}

.cart-item-remove-btn:hover {
  color: var(--color-text-primary);
}

.cart-item-meta {
  font-size: 11px;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

.cart-item-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
}

.cart-item-price {
  font-size: 13px;
  font-weight: 900;
}

.cart-drawer-footer {
  border-top: 1px solid var(--color-text-primary);
  padding: 24px;
  background-color: var(--color-panel);
}

.cart-subtotal-row {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  font-weight: 900;
  margin-bottom: 20px;
}

.cart-actions-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* ==========================================
   12｜SEARCH OVERLAY (全螢幕搜尋)
   ========================================== */
.search-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-bg);
  z-index: 300;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transition: all 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.search-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.search-overlay-header {
  height: var(--header-height);
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: 0 var(--spacing-margin-desktop);
  border-bottom: 1px solid var(--color-text-primary);
}

.search-overlay-body {
  flex: 1;
  padding: 80px var(--spacing-margin-desktop);
  overflow-y: auto;
}

.search-container {
  max-width: 800px;
  margin: 0 auto;
}

.search-label {
  display: block;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.search-input {
  width: 100%;
  font-size: 40px;
  font-weight: 900;
  border-bottom: 2px solid var(--color-text-primary);
  padding-bottom: 16px;
  letter-spacing: -0.02em;
}

.search-input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.search-results-divider {
  height: 1px;
  background-color: var(--color-text-primary);
  opacity: 0.1;
  margin-top: 40px;
  margin-bottom: 40px;
}

.search-results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.search-result-item {
  display: flex;
  gap: 16px;
  border: 1px solid var(--color-text-primary);
  padding: 16px;
  background-color: var(--color-panel);
}

.search-result-img {
  width: 64px;
  aspect-ratio: 4 / 5;
  background-color: var(--color-bg);
  overflow: hidden;
}

.search-result-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.search-result-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.search-result-title {
  font-size: 15px;
  font-weight: 900;
}

.search-result-subtitle {
  font-size: 12px;
  opacity: 0.6;
}

.search-result-price {
  font-size: 13px;
  font-weight: 900;
  color: var(--color-accent);
  margin-top: 4px;
}

.search-no-results {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .search-input { font-size: 24px; }
  .search-results-grid { grid-template-columns: 1fr; }
}

/* ==========================================
   13｜LOOKBOOK VIEW (時裝誌目錄)
   ========================================== */
.lookbook-intro-text {
  grid-column: 1 / 8;
  margin-top: 24px;
}

.lookbook-intro-text p {
  font-size: 16px;
  line-height: 1.8;
  opacity: 0.8;
}

@media (max-width: 768px) {
  .lookbook-intro-text { grid-column: 1 / -1; }
}

.editorial-magazine-layout {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
}

.editorial-row {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 48px;
  align-items: center;
}

.row-normal .editorial-media-col { grid-column: 1 / 8; }
.row-normal .editorial-text-col { grid-column: 9 / 13; }

.row-reverse .editorial-media-col { grid-column: 6 / 13; }
.row-reverse .editorial-text-col { grid-column: 1 / 5; }

.editorial-image-frame {
  background-color: var(--color-panel);
  overflow: hidden;
}

.editorial-magazine-img {
  width: 100%;
  display: block;
  object-fit: cover;
}

.size-large .editorial-magazine-img { aspect-ratio: 16 / 11; }
.size-medium .editorial-magazine-img { aspect-ratio: 4 / 5; }
.size-small .editorial-magazine-img { aspect-ratio: 1 / 1; width: 60%; margin: 0 auto; }

.editorial-image-meta {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  font-weight: 700;
  opacity: 0.4;
  margin-top: 12px;
}

.editorial-text-sticky {
  position: sticky;
  top: calc(var(--header-height) + 48px);
}

.editorial-item-num {
  font-size: 12px;
  font-weight: 900;
  color: var(--color-accent);
}

.editorial-item-title {
  font-size: 40px;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-top: 12px;
  line-height: 0.95;
}

.editorial-item-subtitle {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-secondary);
  margin-top: 4px;
  margin-bottom: 24px;
}

.editorial-item-desc {
  font-size: 14px;
  line-height: 1.8;
  opacity: 0.8;
}

@media (max-width: 1024px) {
  .editorial-row {
    grid-template-columns: 1fr !important;
    gap: 24px;
  }
  .editorial-media-col, .editorial-text-col {
    grid-column: 1 / -1 !important;
  }
  .editorial-text-sticky {
    position: relative;
    top: 0;
  }
  .size-small .editorial-magazine-img { width: 100%; }
}

.lookbook-outro-section {
  background-color: var(--color-text-primary);
  color: var(--color-bg);
  padding: 120px 0;
  text-align: center;
}

.outro-content {
  grid-column: 3 / 11;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.outro-tag {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.05em;
  opacity: 0.5;
}

.outro-title {
  font-size: 32px;
  font-weight: 900;
  line-height: 1.2;
  margin: 20px 0;
}

.outro-desc {
  font-size: 14px;
  opacity: 0.7;
}

/* ==========================================
   14｜ABOUT VIEW (品牌故事)
   ========================================== */
.about-hero-section {
  padding-top: 80px;
  padding-bottom: 40px;
}

.about-hero-tag {
  grid-column: 1 / -1;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--color-accent);
}

.about-hero-title {
  grid-column: 1 / -1;
  font-size: 96px;
  font-weight: 900;
  line-height: 0.85;
  letter-spacing: -0.04em;
  margin-top: 16px;
  margin-bottom: 32px;
}

.about-hero-subtitle {
  grid-column: 1 / 8;
  font-size: 20px;
  line-height: 1.6;
  opacity: 0.8;
}

.about-split-row {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 48px;
  align-items: center;
}

.about-split-row .about-text-col { grid-column: 1 / 6; }
.about-split-row .about-image-col { grid-column: 7 / 13; }

.about-split-row.row-reverse .about-text-col { grid-column: 8 / 13; }
.about-split-row.row-reverse .about-image-col { grid-column: 1 / 7; }

.about-section-num {
  font-size: 11px;
  font-weight: 900;
  opacity: 0.4;
}

.about-section-title {
  font-size: 28px;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin: 8px 0 24px 0;
}

.about-body-text {
  font-size: 15px;
  line-height: 1.8;
  opacity: 0.8;
  margin-bottom: 16px;
}

.about-show-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background-color: var(--color-panel);
}

@media (max-width: 1024px) {
  .about-hero-title { font-size: 64px; }
  .about-split-row { grid-template-columns: 1fr !important; gap: 32px; }
  .about-text-col, .about-image-col { grid-column: 1 / -1 !important; }
}

.about-statement-banner {
  background-color: var(--color-panel);
  padding: 100px 0;
  margin-top: 100px;
}

.about-statement-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.about-manifesto-num {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--color-accent);
}

.about-manifesto-quote {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin: 20px 0;
}

.about-manifesto-desc {
  font-size: 14px;
  opacity: 0.7;
  max-width: 500px;
}

/* ==========================================
   15｜JOURNAL VIEW (品牌誌列表)
   ========================================== */
.journal-articles-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.journal-list-card {
  border: 1px solid var(--color-text-primary);
  display: flex;
  flex-direction: column;
}

.journal-card-image-wrapper {
  aspect-ratio: 16 / 10;
  background-color: var(--color-panel);
  position: relative;
  overflow: hidden;
}

.journal-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.journal-card-num {
  position: absolute;
  bottom: 12px;
  left: 12px;
  font-size: 9px;
  font-weight: 700;
  color: var(--color-bg);
  background-color: var(--color-text-primary);
  padding: 2px 6px;
}

.journal-card-body {
  padding: 24px;
  flex-top: 1;
}

.journal-card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.journal-card-title {
  font-size: 20px;
  font-weight: 900;
  margin: 12px 0;
  line-height: 1.3;
}

.journal-card-summary {
  font-size: 13.5px;
  line-height: 1.7;
  opacity: 0.8;
}

@media (max-width: 1024px) {
  .journal-articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .journal-articles-grid {
    grid-template-columns: 1fr;
  }
}

/* 全螢幕文章閱讀器 */
.article-reader-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-bg);
  z-index: 250;
  transform: translateY(100%);
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
}

.article-reader-overlay.visible {
  transform: translateY(0);
}

.article-reader-header {
  height: var(--header-height);
  align-items: center;
  position: sticky;
  top: 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-text-primary);
  z-index: 10;
}

#article-close-btn {
  grid-column: 12 / 13;
  justify-self: end;
}

.article-reader-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 80px 24px;
}

.article-hero-media {
  aspect-ratio: 16 / 10;
  background-color: var(--color-panel);
  overflow: hidden;
  margin-bottom: 48px;
}

.article-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-meta-row {
  display: flex;
  gap: 24px;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.article-full-title {
  font-size: 40px;
  font-weight: 900;
  line-height: 1.2;
  margin-top: 12px;
  letter-spacing: -0.02em;
}

.article-divider-line {
  height: 1px;
  background-color: var(--color-text-primary);
  margin: 32px 0;
}

.article-rich-text {
  font-size: 16px;
  line-height: 1.9;
}

.article-lead {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 24px;
}

.article-rich-text p {
  margin-bottom: 24px;
  opacity: 0.85;
}

.article-blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 24px;
  font-size: 20px;
  font-weight: 900;
  line-height: 1.4;
  margin: 40px 0;
}

.article-footer-row {
  margin-top: 64px;
  border-top: 1px solid var(--color-text-primary);
  padding-top: 32px;
  display: flex;
  justify-content: center;
}

/* ==========================================
   16｜CART PAGE VIEW (購物車詳情頁)
   ========================================== */
.cart-page-header-row {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 40px;
  margin-top: 40px;
}

.cart-header-count {
  font-size: 14px;
  font-weight: 700;
  opacity: 0.5;
}

.cart-page-layout-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 48px;
  align-items: start;
}

.cart-items-list-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.cart-page-item {
  display: flex;
  border: 1px solid var(--color-text-primary);
  background-color: var(--color-bg);
  padding: 24px;
  gap: 24px;
}

.cart-page-item-image {
  width: 120px;
  aspect-ratio: 4 / 5;
  background-color: var(--color-panel);
  overflow: hidden;
}

.cart-page-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cart-page-item-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.cart-page-item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.cart-page-item-title {
  font-size: 20px;
  font-weight: 900;
}

.cart-page-item-subtitle {
  font-size: 13px;
  opacity: 0.6;
}

.cart-page-item-remove-btn {
  color: var(--color-text-secondary);
}

.cart-page-item-remove-btn:hover {
  color: var(--color-text-primary);
}

.cart-page-item-meta {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

.cart-page-item-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-top: 24px;
}

.cart-page-item-price-col {
  display: flex;
  flex-direction: column;
  text-align: right;
}

.cart-page-item-price-col span {
  font-size: 11px;
  color: var(--color-text-secondary);
}

.cart-page-item-subtotal {
  font-size: 15px;
  font-weight: 900;
  margin-top: 2px;
}

/* 購物車頁右側 Stick */
.cart-summary-sticky-col {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.summary-card-brutalist {
  border: 1px solid var(--color-text-primary);
  background-color: var(--color-panel);
  padding: 32px;
}

.summary-card-title {
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.summary-divider-line {
  height: 1px;
  background-color: var(--color-text-primary);
  margin: 16px 0 24px 0;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  margin-bottom: 12px;
}

.highlight-green {
  color: var(--color-accent);
  font-weight: 900;
}

.total-row {
  font-size: 16px;
  font-weight: 900;
}

.total-row strong {
  font-size: 20px;
}

.summary-tax-note {
  font-size: 11px;
  color: var(--color-text-secondary);
  margin-top: 16px;
}

.cart-page-empty {
  padding: 120px var(--spacing-margin-desktop);
}

.empty-cart-body {
  text-align: center;
  padding: 80px 0;
  border: 1px dashed var(--color-text-primary);
  margin-top: 40px;
}

@media (max-width: 1024px) {
  .cart-page-layout-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================
   17｜CHECKOUT FLOW (結帳頁與表單)
   ========================================== */
.checkout-page-section {
  margin-top: 40px;
}

.checkout-header-row {
  grid-column: 1 / -1;
  margin-bottom: 40px;
}

.checkout-subtitle {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.checkout-layout-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: start;
}

.checkout-step-group {
  border: 1px solid var(--color-text-primary);
  padding: 32px;
  background-color: var(--color-bg);
}

.step-title-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.step-num {
  font-size: 16px;
  font-weight: 900;
  color: var(--color-accent);
}

.step-title {
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.step-divider-line {
  height: 1px;
  background-color: var(--color-text-primary);
  margin: 16px 0 24px 0;
}

/* 表單欄位 */
.form-row-2-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.input-element-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 20px;
}

.input-element-group label {
  font-size: 11px;
  font-weight: 900;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.input-element-group input, 
.input-element-group select, 
.input-element-group textarea {
  height: 48px;
  border: 1px solid var(--color-text-primary);
  padding: 0 16px;
  font-size: 13.5px;
  background-color: var(--color-bg);
}

.input-element-group textarea {
  height: auto;
  padding: 12px 16px;
}

.input-element-group input:focus, 
.input-element-group select:focus, 
.input-element-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

/* 配送/付款切換選項 */
.delivery-method-switch, .payment-method-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.delivery-radio-box, .payment-radio-box {
  cursor: pointer;
}

.delivery-radio-box input, .payment-radio-box input {
  display: none;
}

.delivery-radio-content, .payment-radio-styled {
  border: 1px solid var(--color-text-primary);
  padding: 16px;
  display: flex;
  flex-direction: column;
  font-size: 12px;
  background-color: var(--color-bg);
  transition: all 200ms ease;
  min-height: 52px;
}

.payment-radio-styled {
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.delivery-radio-content strong {
  font-size: 13px;
  margin-bottom: 4px;
}

.delivery-radio-box input:checked + .delivery-radio-content,
.payment-radio-box input:checked + .payment-radio-styled {
  background-color: var(--color-text-primary);
  color: var(--color-bg);
}

.delivery-fields-container, .payment-fields-container {
  display: none;
}

.delivery-fields-container.active, .payment-fields-container.active {
  display: block;
}

.store-tip-text, .payment-tip-text {
  font-size: 12px;
  opacity: 0.6;
  margin-top: 8px;
}

/* 結帳右側預覽 */
.checkout-summary-items-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.checkout-item-preview {
  display: flex;
  gap: 16px;
}

.checkout-item-img {
  width: 56px;
  aspect-ratio: 4 / 5;
  background-color: var(--color-panel);
  overflow: hidden;
}

.checkout-item-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.checkout-item-info {
  flex: 1;
}

.checkout-item-title {
  font-size: 14px;
  font-weight: 900;
}

.checkout-item-desc {
  font-size: 11px;
  color: var(--color-text-secondary);
}

.checkout-item-price-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  margin-top: 4px;
}

@media (max-width: 1024px) {
  .checkout-layout-grid {
    grid-template-columns: 1fr;
  }
}

/* 結帳處理中視圖 */
.checkout-processing-view {
  grid-column: 1 / -1;
  padding: 120px 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.spinner-brutalist {
  width: 48px;
  height: 48px;
  border: 4px solid var(--color-text-primary);
  border-top: 4px solid var(--color-accent);
  animation: spin 800ms linear infinite;
  margin-bottom: 32px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.processing-title {
  font-size: 24px;
  font-weight: 900;
  margin-bottom: 8px;
}

.processing-desc {
  font-size: 14px;
  opacity: 0.6;
  max-width: 600px;
  line-height: 1.6;
  word-break: break-word;
}

.checkout-back-btn {
  margin-top: 32px;
  padding: 12px 32px;
  text-decoration: none;
}

/* 結帳成功頁面 */
.checkout-success-view {
  padding-top: 80px;
}

.success-card-brutalist {
  grid-column: 3 / 11;
  border: 2px solid var(--color-text-primary);
  background-color: var(--color-bg);
  padding: 60px 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.success-icon-wrapper {
  background-color: var(--color-accent);
  color: #FFFFFF;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.success-badge {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
}

.success-title {
  font-size: 32px;
  font-weight: 900;
  margin: 12px 0;
}

.success-desc {
  font-size: 14px;
  opacity: 0.7;
}

.success-divider {
  width: 100%;
  height: 1px;
  background-color: var(--color-text-primary);
  margin: 32px 0;
}

.success-details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  width: 100%;
  text-align: left;
}

.success-detail-item {
  display: flex;
  flex-direction: column;
  font-size: 13px;
}

.success-detail-item strong {
  font-size: 10px;
  font-weight: 900;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.highlight-total {
  font-size: 18px;
  font-weight: 900;
  color: var(--color-accent);
}

.success-actions {
  display: flex;
  gap: 16px;
  width: 100%;
  margin-top: 32px;
}

.success-actions .btn {
  flex: 1;
}

@media (max-width: 768px) {
  .success-card-brutalist { grid-column: 1 / -1; padding: 32px var(--spacing-margin-mobile); }
  .success-details-grid { grid-template-columns: 1fr; }
  .success-actions { flex-direction: column; }
}

/* ==========================================
   18｜MEMBER SYSTEM & WISHLIST (會員系統)
   ========================================== */
.auth-page-section {
  margin-top: 40px;
}

.auth-layout-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

.auth-column {
  display: flex;
  flex-direction: column;
}

.auth-title-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

.auth-num {
  font-size: 16px;
  font-weight: 900;
  color: var(--color-accent);
}

.auth-title {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.auth-divider-line {
  height: 1px;
  background-color: var(--color-text-primary);
  margin: 16px 0 32px 0;
}

.auth-tip-text {
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-top: 12px;
}

.auth-error-message {
  font-size: 12px;
  color: #FF003C;
  font-weight: 700;
  margin-top: 12px;
}

@media (max-width: 768px) {
  .auth-layout-grid { grid-template-columns: 1fr; gap: 48px; }
  #register-col { border-left: none !important; padding-left: 0 !important; }
}

/* 會員儀表板 Dashboard */
.member-dashboard-section {
  margin-top: 40px;
}

.dashboard-header-row {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 40px;
}

.dashboard-header-actions {
  display: flex;
  align-items: center;
}

.dashboard-layout-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 48px;
  align-items: start;
}

.profile-card-brutalist {
  border: 1px solid var(--color-text-primary);
  background-color: var(--color-panel);
  padding: 24px;
}

.profile-title {
  font-size: 14px;
  font-weight: 900;
}

.profile-divider {
  height: 1px;
  background-color: var(--color-text-primary);
  margin: 16px 0;
}

.profile-success-msg {
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 700;
  margin-top: 8px;
}

.dashboard-main-content {
  display: flex;
  flex-direction: column;
}

.dashboard-section-title {
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.dashboard-divider {
  height: 1px;
  background-color: var(--color-text-primary);
  margin: 16px 0 24px 0;
}

.orders-empty-state, .wishlist-empty-state {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 40px 0;
  text-align: center;
  border: 1px dashed rgba(17,17,17,0.2);
}

.order-list-item-brutalist {
  border: 1px solid var(--color-text-primary);
  margin-bottom: 20px;
}

.order-item-header {
  background-color: var(--color-text-primary);
  color: var(--color-bg);
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  font-size: 12px;
}

.order-status-badge {
  background-color: var(--color-accent);
  color: #FFFFFF;
  padding: 1px 6px;
  font-weight: 900;
}

.order-item-body {
  padding: 20px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
}

.order-body-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.order-item-row-preview {
  display: flex;
  gap: 12px;
  font-size: 13px;
}

.order-item-row-preview img {
  width: 40px;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.order-item-row-preview .meta {
  display: block;
  font-size: 11px;
  color: var(--color-text-secondary);
}

.order-body-info {
  border-left: 1px solid rgba(17,17,17,0.1);
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12.5px;
}

@media (max-width: 1024px) {
  .dashboard-layout-grid { grid-template-columns: 1fr; }
  .order-item-body { grid-template-columns: 1fr; }
  .order-body-info { border-left: none; padding-left: 0; border-top: 1px solid rgba(17,17,17,0.1); padding-top: 16px;}
}

/* ==========================================
   19｜CMS BACK-OFFICE PANEL (後台管理)
   ========================================== */
.admin-header-row {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 40px;
  margin-top: 40px;
}

.admin-header-meta {
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
}

.admin-layout-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  align-items: start;
}

.admin-sidebar-menu {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.admin-menu-btn {
  border: 1px solid var(--color-text-primary);
  height: 48px;
  text-align: left;
  padding: 0 20px;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.05em;
  background-color: var(--color-bg);
  transition: all 200ms ease;
}

.admin-menu-btn.active {
  background-color: var(--color-text-primary);
  color: var(--color-bg);
}

.admin-tab-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.tab-title {
  font-size: 16px;
  font-weight: 900;
}

.admin-table-container {
  border: 1px solid var(--color-text-primary);
  background-color: var(--color-bg);
  overflow-x: auto;
}

.admin-data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.admin-data-table th, .admin-data-table td {
  padding: 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-text-primary);
  border-right: 1px solid rgba(17,17,17,0.1);
}

.admin-data-table th {
  background-color: var(--color-panel);
  font-weight: 900;
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.admin-table-thumb {
  width: 48px;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.table-prod-title {
  display: flex;
  flex-direction: column;
}

.table-prod-title strong {
  font-size: 14px;
}

.table-prod-title span {
  font-size: 12px;
  opacity: 0.6;
}

.stock-badge {
  font-weight: 700;
}

.stock-badge.low-stock {
  color: #FF003C;
}

.table-order-id, .table-recipient-info, .table-order-items, .table-price-payment {
  display: flex;
  flex-direction: column;
}

.table-order-id strong, .table-recipient-info strong, .table-price-payment strong {
  font-size: 13px;
}

.table-order-id span, .table-recipient-info span, .table-price-payment span {
  font-size: 11px;
  opacity: 0.6;
}

.table-order-items span {
  font-size: 11px;
  display: block;
}

.btn-table-edit, .btn-table-delete {
  font-weight: 700;
  font-size: 12px;
}

.btn-table-edit:hover, .btn-table-delete:hover {
  text-decoration: underline;
}

@media (max-width: 1024px) {
  .admin-layout-grid { grid-template-columns: 1fr; gap: 32px;}
}

/* CMS Modal overlay */
.admin-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(17,17,17,0.4);
  z-index: 400;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 300ms ease;
  backdrop-filter: blur(2px);
}

.admin-modal-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.admin-modal-box {
  width: 720px;
  max-width: 90%;
  max-height: 90vh;
  background-color: var(--color-bg);
  border: 2px solid var(--color-text-primary);
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}