/* ═══════════════════════════════════════════════
   符籙祈福 — 全站樣式
   風格：侘寂古樸・東方水墨美學
   ═══════════════════════════════════════════════ */

/* ── Google Fonts 載入 ── */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+TC:wght@400;600;700;900&display=swap');

/* ── 色彩系統 (Design Tokens) ── */
:root {
  --clr-bg:        #0a0a0a;
  --clr-bg-alt:    #111111;
  --clr-surface:   #1a1a1a;
  --clr-surface-h: #222222;
  --clr-gold:      #c9a96e;
  --clr-gold-dim:  #8b7340;
  --clr-gold-lit:  #e8d5a3;
  --clr-cinnabar:  #8b2020;
  --clr-cinnabar-l:#b83030;
  --clr-text:      #e8e0d0;
  --clr-text-dim:  #a09880;
  --clr-text-mute: #6a6050;
  --clr-border:    rgba(201, 169, 110, 0.15);
  --clr-border-h:  rgba(201, 169, 110, 0.4);
  --clr-overlay:   rgba(10, 10, 10, 0.85);

  --font-main:     'Noto Serif TC', 'Georgia', serif;
  --radius-sm:     6px;
  --radius-md:     12px;
  --radius-lg:     20px;
  --shadow-card:   0 4px 24px rgba(0, 0, 0, 0.5), 0 1px 4px rgba(201, 169, 110, 0.08);
  --shadow-glow:   0 0 30px rgba(201, 169, 110, 0.15), 0 0 60px rgba(201, 169, 110, 0.05);
  --transition:    0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── 重置 & 基礎 ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-main);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.8;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── 背景粒子容器 ── */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ── 頁面容器 ── */
#app {
  position: relative;
  z-index: 1;
  min-height: 100vh;
}

/* ── 頁面切換動畫 ── */
.page {
  display: none;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.page.active {
  display: block;
}

.page.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════
   頂部導覽
   ═══════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(180deg, var(--clr-bg) 60%, transparent);
  padding: 1rem 2rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

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

.site-logo {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--clr-gold);
  letter-spacing: 0.2em;
  cursor: pointer;
  text-decoration: none;
  text-shadow: 0 0 20px rgba(201, 169, 110, 0.3);
  transition: var(--transition);
}

.site-logo:hover {
  text-shadow: 0 0 30px rgba(201, 169, 110, 0.5);
}

.header-divider {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-gold-dim), transparent);
  opacity: 0.4;
}

/* ═══════════════════════════════════════
   首頁 — 英雄區域
   ═══════════════════════════════════════ */
.hero {
  text-align: center;
  padding: 5rem 2rem 3rem;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 60px;
  background: linear-gradient(180deg, transparent, var(--clr-gold-dim));
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  color: var(--clr-gold);
  letter-spacing: 0.3em;
  margin-bottom: 1.5rem;
  text-shadow: 0 0 40px rgba(201, 169, 110, 0.25);
  animation: titleFadeIn 1.2s ease-out;
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--clr-text-dim);
  max-width: 600px;
  margin: 0 auto 1rem;
  line-height: 2;
  animation: subtitleFadeIn 1.5s ease-out;
}

.hero-quote {
  font-size: 0.9rem;
  color: var(--clr-gold-dim);
  font-style: italic;
  letter-spacing: 0.15em;
  animation: subtitleFadeIn 1.8s ease-out;
}

.hero-ornament {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 2.5rem;
  animation: subtitleFadeIn 2s ease-out;
}

.ornament-line {
  width: 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-gold-dim));
}

.ornament-line:last-child {
  background: linear-gradient(90deg, var(--clr-gold-dim), transparent);
}

.ornament-diamond {
  width: 8px;
  height: 8px;
  border: 1px solid var(--clr-gold-dim);
  transform: rotate(45deg);
}

@keyframes titleFadeIn {
  from { opacity: 0; transform: translateY(-20px); letter-spacing: 0.6em; }
  to   { opacity: 1; transform: translateY(0);    letter-spacing: 0.3em; }
}

@keyframes subtitleFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════
   首頁 — 產品陳列
   ═══════════════════════════════════════ */
.section-title {
  text-align: center;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--clr-gold);
  letter-spacing: 0.2em;
  margin-bottom: 0.5rem;
}

.section-desc {
  text-align: center;
  color: var(--clr-text-dim);
  font-size: 0.85rem;
  margin-bottom: 3rem;
}

.products-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem 4rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 2rem;
}

/* ── 產品卡片 ── */
.product-card {
  position: relative;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}

.product-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  padding: 1px;
  background: linear-gradient(160deg, rgba(201, 169, 110, 0.2), transparent 40%, transparent 60%, rgba(201, 169, 110, 0.1));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  transition: var(--transition);
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: var(--clr-border-h);
  box-shadow: var(--shadow-glow);
}

.product-card:hover::before {
  background: linear-gradient(160deg, rgba(201, 169, 110, 0.4), transparent 40%, transparent 60%, rgba(201, 169, 110, 0.25));
}

.product-card:hover .card-image img {
  transform: scale(1.05);
  filter: brightness(1.1);
}

.card-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: relative;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
  filter: brightness(0.9);
}

.card-image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(transparent, var(--clr-surface));
  pointer-events: none;
}

.card-body {
  padding: 1.2rem 1.4rem 1.4rem;
}

.card-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--clr-gold);
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
}

.card-desc {
  font-size: 0.82rem;
  color: var(--clr-text-dim);
  line-height: 1.7;
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-cinnabar-l);
}

.card-price span {
  font-size: 0.75rem;
  color: var(--clr-text-mute);
  font-weight: 400;
}

.card-action {
  font-size: 0.78rem;
  color: var(--clr-gold-dim);
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.product-card:hover .card-action {
  color: var(--clr-gold);
}

.card-action .arrow {
  transition: var(--transition);
}

.product-card:hover .card-action .arrow {
  transform: translateX(4px);
}

/* ═══════════════════════════════════════
   符籙詳情頁
   ═══════════════════════════════════════ */
.detail-page {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
}

.detail-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--clr-text-dim);
  font-size: 0.85rem;
  cursor: pointer;
  text-decoration: none;
  margin-bottom: 2rem;
  transition: var(--transition);
  background: none;
  border: none;
  font-family: var(--font-main);
}

.detail-back:hover {
  color: var(--clr-gold);
}

.detail-header {
  text-align: center;
  margin-bottom: 3rem;
}

.detail-title {
  font-size: 2rem;
  font-weight: 900;
  color: var(--clr-gold);
  letter-spacing: 0.25em;
  margin-bottom: 0.8rem;
}

.detail-price-tag {
  display: inline-block;
  padding: 0.4rem 1.5rem;
  background: linear-gradient(135deg, var(--clr-cinnabar), var(--clr-cinnabar-l));
  color: #fff;
  border-radius: 30px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.detail-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-gold-dim), var(--clr-gold), var(--clr-gold-dim));
  margin: 2rem auto;
  border-radius: 2px;
}

.detail-content {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  line-height: 2.2;
  color: var(--clr-text);
  font-size: 0.92rem;
}

.detail-content h3 {
  color: var(--clr-gold);
  font-size: 1.1rem;
  margin: 1.5rem 0 0.8rem;
  letter-spacing: 0.1em;
}

.detail-content .check-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 0.3rem 0;
}

.detail-content .check-icon {
  color: var(--clr-gold);
  flex-shrink: 0;
  margin-top: 0.3em;
}

.detail-content .quote-text {
  color: var(--clr-gold-dim);
  font-style: italic;
  border-left: 2px solid var(--clr-gold-dim);
  padding-left: 1rem;
  margin: 1.5rem 0;
}

.detail-content .note-text {
  font-size: 0.8rem;
  color: var(--clr-text-mute);
  margin-top: 1.5rem;
}

.detail-actions {
  text-align: center;
  margin-top: 2.5rem;
}

/* ═══════════════════════════════════════
   訂購頁面
   ═══════════════════════════════════════ */
.order-page {
  max-width: 600px;
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
}

.order-summary {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 2rem;
  margin-bottom: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.order-item-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--clr-gold);
  letter-spacing: 0.1em;
}

.order-item-price {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-cinnabar-l);
}

/* ── 表單 ── */
.form-section-title {
  font-size: 1rem;
  color: var(--clr-gold);
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--clr-border-h), transparent);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  color: var(--clr-text-dim);
  margin-bottom: 0.5rem;
  letter-spacing: 0.08em;
}

.form-label .required {
  color: var(--clr-cinnabar-l);
  margin-left: 2px;
}

.form-input {
  width: 100%;
  padding: 0.85rem 1.2rem;
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  color: var(--clr-text);
  font-family: var(--font-main);
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-input:focus {
  border-color: var(--clr-gold);
  box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.1);
}

.form-input::placeholder {
  color: var(--clr-text-mute);
}

.form-input.error {
  border-color: var(--clr-cinnabar-l);
  box-shadow: 0 0 0 3px rgba(184, 48, 48, 0.1);
}

.form-error {
  font-size: 0.78rem;
  color: var(--clr-cinnabar-l);
  margin-top: 0.4rem;
  display: none;
}

.form-error.visible {
  display: block;
}

/* ═══════════════════════════════════════
   按鈕系統
   ═══════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.85rem 2.5rem;
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--clr-gold-dim), var(--clr-gold));
  color: var(--clr-bg);
  box-shadow: 0 4px 16px rgba(201, 169, 110, 0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--clr-gold), var(--clr-gold-lit));
  box-shadow: 0 6px 24px rgba(201, 169, 110, 0.35);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: transparent;
  color: var(--clr-gold);
  border: 1px solid var(--clr-gold-dim);
}

.btn-secondary:hover {
  background: rgba(201, 169, 110, 0.08);
  border-color: var(--clr-gold);
}

.btn-pay {
  background: linear-gradient(135deg, #1677ff, #4096ff);
  color: #fff;
  box-shadow: 0 4px 16px rgba(22, 119, 255, 0.3);
  width: 100%;
  padding: 1rem;
  font-size: 1.05rem;
}

.btn-pay:hover {
  background: linear-gradient(135deg, #4096ff, #69b1ff);
  box-shadow: 0 6px 24px rgba(22, 119, 255, 0.4);
  transform: translateY(-2px);
}

/* ═══════════════════════════════════════
   訂購成功頁面
   ═══════════════════════════════════════ */
.success-page {
  max-width: 500px;
  margin: 0 auto;
  padding: 6rem 2rem;
  text-align: center;
}

.success-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(201, 169, 110, 0.15), rgba(201, 169, 110, 0.05));
  border: 2px solid var(--clr-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 2rem;
  animation: successPulse 2s ease-in-out infinite;
}

.success-icon svg {
  width: 36px;
  height: 36px;
  stroke: var(--clr-gold);
}

.success-title {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--clr-gold);
  letter-spacing: 0.3em;
  margin-bottom: 1rem;
}

.success-msg {
  color: var(--clr-text-dim);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.success-countdown {
  color: var(--clr-text-mute);
  font-size: 0.85rem;
}

.success-countdown span {
  color: var(--clr-gold);
  font-weight: 700;
}

@keyframes successPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(201, 169, 110, 0.2); }
  50%      { box-shadow: 0 0 0 15px rgba(201, 169, 110, 0); }
}

/* ═══════════════════════════════════════
   頁腳
   ═══════════════════════════════════════ */
.site-footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--clr-border);
  color: var(--clr-text-mute);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
}

/* ═══════════════════════════════════════
   載入動畫
   ═══════════════════════════════════════ */
.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--clr-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  transition: opacity 0.6s ease;
}

.loading-overlay.fade-out {
  opacity: 0;
  pointer-events: none;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 2px solid var(--clr-border);
  border-top-color: var(--clr-gold);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  color: var(--clr-gold-dim);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
}

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

  .hero-title {
    letter-spacing: 0.15em;
  }

  .products-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.2rem;
    padding: 0 1.2rem 3rem;
  }

  .detail-page,
  .order-page {
    padding: 2rem 1.2rem 3rem;
  }

  .detail-content {
    padding: 1.5rem;
  }

  .order-summary {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

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

  .card-image {
    height: 160px;
  }

  .detail-title {
    font-size: 1.5rem;
    letter-spacing: 0.15em;
  }
}

/* ═══════════════════════════════════════
   滾動條美化
   ═══════════════════════════════════════ */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--clr-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--clr-gold-dim);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--clr-gold);
}

/* ═══════════════════════════════════════
   選取文字顏色
   ═══════════════════════════════════════ */
::selection {
  background: rgba(201, 169, 110, 0.3);
  color: var(--clr-gold-lit);
}