/* ===========================================================
   武道嚴選（示範站）MartialArts E-commerce POC
   桃紅 / 黑 / 白 三色系，仿GOGOSHOP電商版面結構
   =========================================================== */

:root {
  --pink: #e3006d;
  --pink-dark: #b8004f;
  --pink-light: #fdeaf2;
  --black: #1a1a1a;
  --white: #ffffff;
  --gray-bg: #f7f7f8;
  --border: #e5e5e5;
  --text: #222222;
  --text-dim: #666666;
  --text-faint: #999999;
  --line-green: #06c755;
  --line-green-dark: #05a647;
  --max-width: 1200px;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--text);
  font-family: "Noto Sans TC", "Microsoft JhengHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--pink);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------------- 佔位測試資料公告 ---------------- */

.placeholder-banner {
  background: var(--pink-light);
  border-bottom: 1px solid var(--pink);
  color: var(--pink-dark);
  font-size: 0.85rem;
  text-align: center;
  padding: 8px 16px;
}

/* ---------------- Header ---------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--border);
}

.header-top {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand img {
  height: 40px;
  width: auto;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--black);
  font-size: 1.3rem;
  padding: 4px 10px;
  cursor: pointer;
}

/* 主選單 */
.main-nav {
  background: var(--white);
}

.main-nav ul {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  gap: 26px;
  list-style: none;
}

.main-nav a {
  display: inline-block;
  padding: 10px 0;
  color: var(--black);
  font-weight: 600;
  font-size: 0.95rem;
  border-bottom: 3px solid transparent;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--pink);
  border-bottom-color: var(--pink);
  text-decoration: none;
}

/* 副選單（子分類捷徑列） */
.sub-nav {
  background: var(--black);
}

.sub-nav ul {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  gap: 22px;
  list-style: none;
  overflow-x: auto;
}

.sub-nav a {
  display: inline-block;
  padding: 9px 0;
  color: #e9e9e9;
  font-size: 0.85rem;
  white-space: nowrap;
}

.sub-nav a:hover,
.sub-nav a.active {
  color: var(--pink);
  text-decoration: none;
}

/* 語言切換 */
.lang-switcher {
  position: relative;
}

.lang-switcher-btn {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.85rem;
  color: var(--black);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.lang-switcher-btn:hover {
  border-color: var(--pink);
  color: var(--pink);
}

.lang-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  min-width: 160px;
  padding: 6px;
  display: none;
  z-index: 200;
}

.lang-menu.open {
  display: block;
}

.lang-menu a {
  display: block;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--text);
  font-size: 0.88rem;
}

.lang-menu a:hover,
.lang-menu a.active {
  background: var(--pink-light);
  color: var(--pink-dark);
  text-decoration: none;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-block;
  }

  .main-nav ul,
  .sub-nav ul {
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
    padding: 0 20px;
  }

  .main-nav ul.open,
  .sub-nav ul.open {
    max-height: 480px;
    padding: 6px 20px;
  }

  .main-nav a,
  .sub-nav a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
}

/* ---------------- Breadcrumb ---------------- */

.breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 20px 0;
  font-size: 0.85rem;
  color: var(--text-faint);
}

.breadcrumb a {
  color: var(--text-dim);
}

.breadcrumb a:hover {
  color: var(--pink);
}

.breadcrumb .sep {
  margin: 0 6px;
  color: var(--text-faint);
}

/* ---------------- Category Page Layout ---------------- */

.category-layout {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 20px 56px;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 32px;
}

@media (max-width: 860px) {
  .category-layout {
    grid-template-columns: 1fr;
  }
}

/* 左側分類篩選側欄 */
.category-sidebar h2 {
  font-size: 1rem;
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--black);
}

.category-tree {
  list-style: none;
  margin: 0;
  padding: 0;
}

.category-tree > li {
  margin-bottom: 4px;
}

.category-tree a {
  display: block;
  padding: 8px 10px;
  color: var(--black);
  font-weight: 600;
  font-size: 0.92rem;
  border-radius: 6px;
}

.category-tree .sub-tree {
  list-style: none;
  margin: 2px 0 6px;
  padding-left: 14px;
}

.category-tree .sub-tree a {
  font-weight: 400;
  font-size: 0.86rem;
  color: var(--text-dim);
}

.category-tree a:hover,
.category-tree a.active {
  background: var(--pink-light);
  color: var(--pink-dark);
  text-decoration: none;
}

/* 商品網格區 */
.product-main h1 {
  font-size: 1.3rem;
  margin: 0 0 18px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

@media (max-width: 960px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 680px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.product-card {
  display: block;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.product-card:hover {
  border-color: var(--pink);
  transform: translateY(-3px);
  text-decoration: none;
}

.product-card .thumb {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: var(--gray-bg);
  overflow: hidden;
}

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

.product-card .name {
  padding: 12px 10px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text);
  margin: 0;
}

.empty-state {
  color: var(--text-faint);
  text-align: center;
  padding: 50px 0;
  grid-column: 1 / -1;
}

/* 分頁 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 36px;
  flex-wrap: wrap;
}

.pagination button {
  min-width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--black);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
}

.pagination button:hover {
  border-color: var(--pink);
  color: var(--pink);
}

.pagination button.active {
  background: var(--pink);
  border-color: var(--pink);
  color: var(--white);
}

.pagination .ellipsis {
  color: var(--text-faint);
  padding: 0 4px;
}

/* ---------------- Product Detail Page ---------------- */

.product-detail {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 20px 64px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

@media (max-width: 860px) {
  .product-detail {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

.product-detail .detail-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: var(--gray-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.product-detail .detail-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-detail .detail-info h1 {
  font-size: 1.4rem;
  margin: 0 0 6px;
}

.product-detail .detail-sku {
  color: var(--text-faint);
  font-size: 0.85rem;
  margin: 0 0 20px;
}

.detail-section-title {
  font-size: 1rem;
  color: var(--pink-dark);
  border-left: 4px solid var(--pink);
  padding-left: 10px;
  margin: 24px 0 12px;
}

.spec-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.spec-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
  color: var(--text-dim);
}

.detail-description {
  color: var(--text-dim);
  font-size: 0.95rem;
}

.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-line {
  background: var(--line-green);
  color: var(--white);
}

.btn-line:hover {
  background: var(--line-green-dark);
  text-decoration: none;
}

.btn-pink {
  background: var(--pink);
  color: var(--white);
}

.btn-pink:hover {
  background: var(--pink-dark);
  text-decoration: none;
}

.detail-cta {
  margin-top: 28px;
}

/* ---------------- About / 關於我們 ---------------- */

.about-section {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}

.about-section h1 {
  font-size: 1.5rem;
  margin: 0 0 18px;
}

.about-section p {
  color: var(--text-dim);
}

/* ---------------- Hero (首頁) ---------------- */

.hero {
  background: var(--black);
  color: var(--white);
  padding: 60px 0;
  text-align: center;
}

.hero h1 {
  font-size: 1.9rem;
  margin: 0 0 14px;
}

.hero h1 .accent {
  color: var(--pink);
}

.hero p {
  color: #cfcfcf;
  max-width: 620px;
  margin: 0 auto 26px;
}

.home-section {
  padding: 48px 0;
}

.home-section .section-title {
  font-size: 1.3rem;
  margin: 0 0 6px;
  text-align: center;
}

.home-section .section-sub {
  color: var(--text-dim);
  text-align: center;
  margin: 0 0 28px;
}

.home-category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

@media (max-width: 860px) {
  .home-category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.home-category-card {
  display: block;
  text-align: center;
  padding: 24px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--black);
  font-weight: 600;
  background: var(--white);
}

.home-category-card:hover {
  border-color: var(--pink);
  color: var(--pink);
  text-decoration: none;
}

/* ---------------- Footer ---------------- */

.site-footer {
  background: var(--black);
  color: #cfcfcf;
}

.footer-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 44px 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

@media (max-width: 680px) {
  .footer-main {
    grid-template-columns: 1fr;
  }
}

.footer-main h3 {
  color: var(--white);
  font-size: 1rem;
  margin: 0 0 14px;
}

.footer-main p,
.footer-main li {
  color: #b7b7b7;
  font-size: 0.88rem;
}

.footer-main ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-main li {
  margin-bottom: 8px;
}

.footer-main a {
  color: #d8d8d8;
}

.footer-main a:hover {
  color: var(--pink);
}

.footer-bottom {
  border-top: 1px solid #333;
  text-align: center;
  padding: 16px 20px;
  font-size: 0.8rem;
  color: #888;
}

/* ---------------- Floating LINE Button ---------------- */

.line-float-btn {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 500;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--line-green);
  color: var(--white);
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 6px 18px rgba(6, 199, 85, 0.35);
}

.line-float-btn:hover {
  background: var(--line-green-dark);
  text-decoration: none;
}