/* ===== aipale design system — 整站共用（改這裡全站連動） =====
 * 需求：首頁 tokens 為準，子頁用 body.cat-* 切換 category accent。
 * 載入順序：Google Fonts → 本檔 → 頁面 inline <style>（讓單頁可微調覆寫）
 */

:root {
  /* ---- Brand colors ---- */
  --primary:       #2B5797;
  --primary-light: #6B9BD2;
  --primary-dark:  #1E3F6F;

  --accent:        #D4A853;
  --accent-light:  #E8C980;
  --accent-dark:   #A88340;

  --rose:          #B0879A;
  --rose-light:    #D4B0C0;
  --rose-dark:     #8B6A7D;

  --coral:         #C4929E;
  --nav-bg:        #7EB3D8;

  /* ---- Surfaces ---- */
  --bg-white:   #FAFBFC;
  --bg-light:   #F5F7FA;
  --bg-section: #EDF1F7;

  /* ---- Ink ---- */
  --ink:       #1A2332;
  --ink-light: #4A5568;
  --ink-muted: #7A8494;
  --border:    #E2E8F0;

  /* ---- Type ---- */
  --font-display: 'Zen Maru Gothic', sans-serif;
  --font-body:    'Noto Sans TC', sans-serif;

  /* ---- Motion ---- */
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-out-quint: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out-expo:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring:    cubic-bezier(0.34, 1.56, 0.64, 1);

  /* ---- Shadows ---- */
  --shadow-sm: 0 1px 2px rgba(26,35,50,0.04), 0 2px 4px rgba(26,35,50,0.03);
  --shadow-md: 0 4px 6px rgba(26,35,50,0.04), 0 10px 24px rgba(26,35,50,0.06);
  --shadow-lg: 0 8px 16px rgba(26,35,50,0.06), 0 24px 48px rgba(26,35,50,0.08);
  --shadow-xl: 0 12px 24px rgba(26,35,50,0.08), 0 32px 64px rgba(26,35,50,0.12);

  /* ---- Category accent（子頁用 body class 切換） ---- */
  --cat-color:       var(--primary);
  --cat-color-dark:  var(--primary-dark);
  --cat-color-light: var(--primary-light);
  --cat-color-soft:  rgba(43,87,151,0.08);
}

body.cat-original {
  --cat-color:       var(--primary);
  --cat-color-dark:  var(--primary-dark);
  --cat-color-light: var(--primary-light);
  --cat-color-soft:  rgba(43,87,151,0.08);
}
body.cat-tra {
  --cat-color:       var(--accent);
  --cat-color-dark:  var(--accent-dark);
  --cat-color-light: var(--accent-light);
  --cat-color-soft:  rgba(212,168,83,0.1);
}
body.cat-custom {
  --cat-color:       var(--rose);
  --cat-color-dark:  var(--rose-dark);
  --cat-color-light: var(--rose-light);
  --cat-color-soft:  rgba(176,135,154,0.1);
}

/* ===== Base reset & typography ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg-white);
  font-weight: 400;
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block; }

.container { max-width: 1100px; margin: 0 auto; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 32px; border-radius: 10px; font-family: var(--font-body);
  font-size: 15px; font-weight: 600; text-decoration: none;
  transition: all 0.3s var(--ease-out-quart); cursor: pointer; border: none;
  letter-spacing: 0.3px; position: relative; overflow: hidden;
}
.btn::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
  opacity: 0; transition: opacity 0.3s;
}
.btn:hover::before { opacity: 1; }

.btn-primary {
  background: var(--primary); color: #fff;
  box-shadow: 0 4px 14px rgba(43,87,151,0.25);
}
.btn-primary:hover {
  background: var(--primary-dark); transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(43,87,151,0.3);
}
.btn-primary:active { transform: translateY(-1px) scale(0.98); }

.btn-accent {
  background: var(--accent); color: #fff;
  box-shadow: 0 4px 14px rgba(212,168,83,0.25);
}
.btn-accent:hover {
  background: var(--accent-light); transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(212,168,83,0.3);
}
.btn-accent:active { transform: translateY(-1px) scale(0.98); }

.btn-outline {
  background: transparent; color: var(--ink-light);
  border: 2px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--primary); color: var(--primary);
  background: rgba(43,87,151,0.03); transform: translateY(-3px);
}

.btn-white {
  background: #fff; color: var(--cat-color-dark);
}
.btn-white:hover { background: var(--bg-light); }

/* ===== Page header（子頁標題區） ===== */
.page-header {
  padding: 160px 24px 60px;
  background: linear-gradient(135deg, var(--bg-light), var(--bg-section));
  text-align: center;
}
.page-header .breadcrumb {
  font-size: 13px; color: var(--ink-muted); margin-bottom: 16px;
}
.page-header .breadcrumb a {
  color: var(--cat-color); text-decoration: none;
  transition: color 0.2s;
}
.page-header .breadcrumb a:hover { color: var(--cat-color-dark); }
.page-header .breadcrumb strong { color: var(--ink); font-weight: 600; }
.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700; margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.page-header p {
  font-size: 16px; color: var(--ink-light);
  max-width: 700px; margin: 0 auto;
  line-height: 1.85;
}
.page-header .stats-row {
  display: flex; justify-content: center; gap: 40px; margin-top: 32px;
  flex-wrap: wrap;
}
.page-header .stat { text-align: center; }
.page-header .stat-num {
  font-family: var(--font-display);
  font-size: 28px; font-weight: 700;
  color: var(--cat-color);
}
.page-header .stat-label { font-size: 12px; color: var(--ink-muted); }
.page-header .badge {
  display: inline-block; background: var(--cat-color); color: #fff;
  font-size: 12px; font-weight: 600; padding: 4px 16px;
  border-radius: 4px; margin-bottom: 16px; letter-spacing: 2px;
}

/* 所有子頁 page-header 統一淺色底 — 臺鐵頁金色徽章作為區隔即可，不整塊翻黑 */

/* ===== Filter bar（產品頁分類切換） ===== */
.filter-bar {
  padding: 20px 24px; background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 72px; z-index: 50;
}
.filter-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; gap: 10px; flex-wrap: wrap; justify-content: center;
}
.filter-btn {
  padding: 7px 16px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--bg-white);
  color: var(--ink-light); font-size: 12px; font-weight: 500;
  cursor: pointer; transition: all 0.2s;
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--cat-color); color: #fff;
  border-color: var(--cat-color);
}

/* ===== Product grid（子頁通用） ===== */
.product-section { padding: 60px 24px; max-width: 1200px; margin: 0 auto; }
.product-section h2,
.alt-bg h2 {
  font-family: var(--font-display); font-size: 22px; font-weight: 700;
  margin-bottom: 6px; padding-left: 16px;
  border-left: 4px solid var(--cat-color);
}
.product-section .subtitle,
.alt-bg .subtitle {
  font-size: 13px; color: var(--ink-muted);
  margin-bottom: 24px; padding-left: 20px;
}
.product-section .price-tag,
.alt-bg .price-tag {
  color: var(--cat-color-dark); font-weight: 600; font-size: 13px;
  padding-left: 20px; margin-bottom: 24px;
}
.product-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.product-item {
  background: var(--bg-light); border-radius: 10px; overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid var(--border);
}
.product-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}
.product-item-img {
  aspect-ratio: 1; overflow: hidden;
  background: #f0f2f5; position: relative;
}
.product-item-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s;
}
.product-item:hover .product-item-img img { transform: scale(1.05); }
.product-item-badge {
  position: absolute; top: 8px; right: 8px;
  background: var(--cat-color); color: #fff;
  font-size: 10px; font-weight: 600;
  padding: 3px 8px; border-radius: 4px;
}
.product-item-badge.pending { background: #999; }
.product-item-img .placeholder-text {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 15px; font-weight: 700;
  color: var(--ink-muted); letter-spacing: 1px;
}
.product-item-info { padding: 14px; }
.product-item-info h3 {
  font-family: var(--font-display); font-size: 13px; font-weight: 700;
  margin-bottom: 4px; color: var(--ink);
}
.product-item-info p { font-size: 11px; color: var(--ink-muted); }

.alt-bg { background: var(--bg-light); padding: 60px 24px; }
.alt-bg .container { max-width: 1200px; margin: 0 auto; }

/* ===== Page CTA（子頁底部行動區） ===== */
.page-cta {
  background: linear-gradient(135deg, var(--cat-color), var(--cat-color-dark));
  text-align: center; padding: 80px 24px; color: #fff;
}
.page-cta h2 {
  font-family: var(--font-display); font-size: 28px; font-weight: 700;
  margin-bottom: 12px;
}
.page-cta p { font-size: 16px; opacity: 0.9; margin-bottom: 24px; }

/* ===== Footer（子頁用單排精簡版 / 首頁自己 inline 4 欄） ===== */
.footer {
  background: var(--ink); color: rgba(255,255,255,0.55);
  padding: 40px 24px 24px;
}
.footer a {
  color: rgba(255,255,255,0.55); text-decoration: none;
  transition: color 0.25s var(--ease-out-quart);
}
.footer a:hover { color: var(--nav-bg); }
.footer-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; flex-wrap: wrap; gap: 16px;
}
/* 首頁 footer 是 grid 4 欄，由首頁 inline style 覆寫；子頁用預設 flex 就好 */

/* ===== Scroll to top ===== */
.scroll-top {
  position: fixed; bottom: 32px; right: 32px; z-index: 90;
  width: 48px; height: 48px; border-radius: 14px;
  background: var(--primary); color: #fff;
  border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0; transform: translateY(20px);
  transition: all 0.4s var(--ease-out-quart);
  pointer-events: none;
}
.scroll-top.visible {
  opacity: 1; transform: translateY(0); pointer-events: all;
}
.scroll-top:hover {
  background: var(--primary-dark); transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.scroll-top:active { transform: scale(0.95); }
.scroll-top svg { width: 20px; height: 20px; }

/* ===== Reveal ===== */
.reveal {
  opacity: 0; transform: translateY(32px);
  transition: opacity 0.8s var(--ease-out-quint),
              transform 0.8s var(--ease-out-quint);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .page-header { padding: 140px 20px 50px; }
  .page-header .stats-row { gap: 20px; }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}