/* 主題沿用 blog（hexo-theme-Klise-glassy）：毛玻璃卡片、#f66 強調色、隨機背景圖 */
:root {
  --text: #0d122b;
  --heading: #0d122b;
  --muted: #6b7886;
  --accent: #f66;
  --accent-hover: #f33;
  --accent-soft: rgba(255, 102, 102, 0.12);
  --accent-text: #fff;
  --border: rgba(13, 18, 43, 0.12);
  --glass-bg: linear-gradient(rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.2));
  --glass-border: rgba(255, 255, 255, 0.25);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
  --glass-shadow-hover: 0 16px 48px 0 rgba(31, 38, 135, 0.25), 0 8px 24px 0 rgba(31, 38, 135, 0.15);
  --item-bg: rgba(255, 255, 255, 0.45);
  --surface: #fff;
  --spinner: rgba(13, 18, 43, 0.15);
  --spinner-top: rgba(13, 18, 43, 0.6);

  --page-bg-overlay: linear-gradient(rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.3));
  --page-bg-fallback: #eef0f3;
  --page-bg-image: var(--page-bg-image-light, var(--page-bg-image-dark, none));
  color-scheme: light;
}

html[data-theme=dark] {
  --text: #c7bebe;
  --heading: #eaeaea;
  --muted: #767f87;
  --accent: #ff5277;
  --accent-hover: #ff2957;
  --accent-soft: rgba(255, 82, 119, 0.15);
  --accent-text: #fff;
  --border: rgba(255, 255, 255, 0.12);
  --glass-bg: linear-gradient(rgba(40, 40, 40, 0.6), rgba(40, 40, 40, 0.5));
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  --glass-shadow-hover: 0 16px 48px 0 rgba(0, 0, 0, 0.5), 0 8px 24px 0 rgba(0, 0, 0, 0.3);
  --item-bg: rgba(255, 255, 255, 0.05);
  --surface: #25262b;
  --spinner: rgba(199, 190, 190, 0.15);
  --spinner-top: rgba(199, 190, 190, 0.7);

  --page-bg-overlay: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5));
  --page-bg-fallback: #1b1c20;
  --page-bg-image: var(--page-bg-image-dark, var(--page-bg-image-light, none));
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--page-bg-fallback);
  color: var(--text);
  font: 500 16px/1.85 lato, "Helvetica Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang TC", "LXGW Neo ZhiSong", "Microsoft JhengHei", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  transition: color 75ms;
}

/* 隨機背景圖＋半透明遮罩 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: var(--page-bg-overlay), var(--page-bg-image) center center / cover no-repeat var(--page-bg-fallback);
}

::selection { background: #fffba0; color: #0d122b; }

/* ---------- 載入畫面 ---------- */
html.bg-loading, html.bg-loading body { overflow: hidden; }
.page-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--page-bg-fallback);
  transition: opacity 0.4s ease, visibility 0s linear 0.4s;
}
html:not(.bg-loading) .page-loader { opacity: 0; visibility: hidden; }
.page-loader-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--spinner);
  border-top-color: var(--spinner-top);
  border-radius: 50%;
  animation: page-loader-spin 0.8s linear infinite;
}
@keyframes page-loader-spin { to { transform: rotate(360deg); } }
html.bg-loading body *:not(.page-loader, .page-loader *) { animation-play-state: paused !important; }

/* ---------- 頂部列 ---------- */
.topbar {
  max-width: 830px;
  margin: 0 auto;
  padding: 15px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 10;
  animation: navSlideIn 0.6s ease 0.1s backwards;
}
.mode-toggle {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: none;
  background: none;
  color: var(--heading);
  opacity: 0.7;
  cursor: pointer;
  transition: opacity 0.2s;
}
.mode-toggle:hover { opacity: 1; }
.mode-toggle svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.mode-toggle .icon-moon { display: none; }
html[data-theme=dark] .mode-toggle .icon-sun { display: none; }
html[data-theme=dark] .mode-toggle .icon-moon { display: block; }

.topbar-right { display: flex; align-items: center; gap: 10px; }

/* ---------- 語言選單 ---------- */
/* 對齊用：選單文字的左緣 = 按鈕文字的左緣 */
.lang-menu {
  --trigger-pad: 4px;
  --list-pad: 6px;
  --item-pad: 10px;
  position: relative;
}

.lang-trigger {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px var(--trigger-pad);
  border: none;
  background: transparent;
  color: var(--heading);
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.5;
  opacity: 0.75;
  cursor: pointer;
  transition: opacity 0.2s, color 0.2s;
}
.lang-trigger:hover,
.lang-menu.open .lang-trigger { opacity: 1; color: var(--accent); }
.lang-trigger .chevron {
  width: 7px;
  height: 7px;
  margin-top: -3px;
  border-right: 1.75px solid currentColor;
  border-bottom: 1.75px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.25s ease, margin 0.25s ease;
}
.lang-menu.open .lang-trigger .chevron { transform: rotate(225deg); margin-top: 4px; }

/* hover 時底線由中間往兩側展開；選單打開時保持 */
.lang-trigger::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease, left 0.3s ease;
}
.lang-trigger:hover::after,
.lang-trigger:focus-visible::after,
.lang-menu.open .lang-trigger::after { left: var(--trigger-pad); width: calc(100% - var(--trigger-pad) * 2); }
.lang-trigger:focus-visible { outline: none; }

/* 下拉選單：用付款卡片的底色（不加外框與陰影），展開時由上往下延伸 */
.lang-list {
  position: absolute;
  top: calc(100% + 4px);
  left: calc(var(--trigger-pad) - var(--list-pad) - var(--item-pad));
  z-index: 20;
  display: grid;
  min-width: calc(100% + (var(--list-pad) + var(--item-pad) - var(--trigger-pad)) * 2);
  padding: var(--list-pad);
  /* 付款卡片（.card）是 --item-bg 疊在毛玻璃上，這裡疊出同樣的顏色 */
  background: linear-gradient(var(--item-bg), var(--item-bg)), var(--glass-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  visibility: hidden;
  clip-path: inset(0 0 100% 0);
  transition: clip-path 0.3s ease, visibility 0s linear 0.3s;
}
.lang-menu.open .lang-list {
  visibility: visible;
  clip-path: inset(0);
  transition: clip-path 0.35s ease, visibility 0s;
}

.lang-item {
  display: flex;
  align-items: center;
  padding: 6px var(--item-pad);
  border: none;
  background: transparent;
  color: var(--heading);
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(-8px);
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease, color 0.15s;
}
/* 選項依序往下滑入 */
.lang-menu.open .lang-item {
  opacity: 0.75;
  transform: none;
  transition: opacity 0.3s ease, transform 0.3s ease, color 0.15s;
}
.lang-menu.open .lang-item:nth-child(2) { transition-delay: 0.05s, 0.05s, 0s; }
.lang-menu.open .lang-item:nth-child(3) { transition-delay: 0.1s, 0.1s, 0s; }
.lang-menu.open .lang-item:hover,
.lang-menu.open .lang-item:focus-visible { outline: none; opacity: 1; color: var(--accent); }
.lang-menu.open .lang-item[aria-checked="true"] { opacity: 1; color: var(--accent); }

.home-link {
  position: relative;
  padding: 5px 8px;
  color: var(--heading);
  opacity: 0.7;
  text-decoration: none;
  transition: opacity 0.2s;
}
.home-link:hover { opacity: 1; }

/* 連結底線由中間往兩側展開（同 blog） */
.home-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease, left 0.3s ease;
}
.home-link:hover::after { left: 8px; width: calc(100% - 16px); }

/* ---------- 主要版面 ---------- */
.wrapper {
  max-width: 660px;
  margin: 0 auto;
  padding: 0 30px;
}

.author {
  margin: 4.5rem 0 3.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  opacity: 0;
  animation: authorSlideIn 0.8s ease 0.2s forwards;
}
.author-avatar-wrapper {
  width: 140px;
  height: 140px;
  border-radius: 100%;
  background-color: #0d122b;
  overflow: hidden;
}
.author-avatar {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: 0.6s;
}
.author-avatar:hover { transform: scale(1.2); }
.author-name {
  font-size: 1.7em;
  color: var(--heading);
  margin: 10px 0 2px;
  line-height: 1.4;
}
.author-bio {
  margin: 10px auto 0;
  max-width: 393px;
  opacity: 0.9;
  line-height: 1.688;
}
.author-bio:empty { display: none; }

/* 毛玻璃卡片 */
.glass-wrapper {
  position: relative;
  padding: 24px;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: var(--glass-shadow);
  opacity: 0;
  animation: glassSlideIn 0.8s ease 0.3s forwards;
}

.header-title {
  position: relative;
  margin: 0 0 18px;
  font-size: 1.25rem;
  color: var(--heading);
}
.header-title::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 12.5%;
  width: 5px;
  height: 75%;
  background: var(--accent);
}

/* ---------- 金額 ---------- */
.amounts { margin-bottom: 20px; }
.section-label { font-size: 0.875rem; color: var(--muted); margin: 0 0 8px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip,
.chip-input {
  flex: 1 1 0;
  min-width: 64px;
  padding: 8px 12px;
  border: 1.5px solid var(--border);
  border-radius: 999px;
  background: var(--item-bg);
  color: var(--heading);
  font: inherit;
  font-weight: 700;
  line-height: 1.5;
  transition: border-color 0.2s, background 0.2s, color 0.2s, transform 0.2s;
}
.chip { cursor: pointer; }
.chip:hover { border-color: var(--accent); transform: translateY(-2px); }
.chip[aria-checked="true"] {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}
.chip-input { min-width: 88px; text-align: center; font-weight: 500; }
.chip-input:focus { outline: none; border-color: var(--accent); }

/* ---------- 付款方式 ---------- */
.methods { display: grid; gap: 14px; }
.card {
  padding: 18px;
  background: var(--item-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  scroll-margin-top: 24px;
  opacity: 0;
  animation: slideInUp 0.6s ease forwards;
  animation-delay: calc(0.4s + var(--i, 0) * 0.08s);
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), box-shadow 0.4s, border-color 0.3s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--glass-shadow-hover);
}
.card.highlight {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.card h3 {
  margin: 0;
  font-size: 1.05rem;
  color: var(--heading);
  line-height: 1.5;
}
.card .note { margin: 2px 0 0; font-size: 0.875rem; color: var(--muted); line-height: 1.6; }

.icon-btn {
  flex: none;
  padding: 2px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.icon-btn:hover { color: var(--accent); border-color: var(--accent); }

.btn {
  position: relative;
  overflow: hidden;
  display: block;
  width: 100%;
  margin-top: 14px;
  padding: 10px 16px;
  border: 1.5px solid var(--accent);
  border-radius: 10px;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.15s;
}
.btn:hover { background: var(--accent-soft); }
.btn:active { transform: scale(0.98); }
.btn.primary { background: var(--accent); color: var(--accent-text); }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

/* 點擊漣漪（同 blog） */
.btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}
.btn:active::before { width: 300px; height: 300px; }

.qr-thumb {
  display: block;
  margin: 14px auto 0;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  cursor: zoom-in;
  transition: transform 0.3s;
}
.qr-thumb:hover { transform: scale(1.03); }
/* 依原圖比例顯示，直式收款海報也看得清楚 */
.qr-thumb img { display: block; width: 200px; max-width: 100%; height: auto; }

.thanks { margin: 0 0 6px; color: var(--text); font-size: 0.95rem; }
.thanks:empty { display: none; }

/* ---------- QR 放大 ---------- */
.qr-dialog {
  max-width: min(92vw, 420px);
  padding: 20px;
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  background: var(--surface);
  color: var(--text);
  text-align: center;
  box-shadow: var(--glass-shadow-hover);
}
.qr-dialog::backdrop {
  background: rgba(0, 0, 0, 0.5);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.qr-dialog img {
  display: block;
  width: 100%;
  max-width: 340px;
  max-height: 75vh;
  object-fit: contain;
  margin: 0 auto;
  padding: 12px;
  border-radius: 12px;
  background: #fff;
}
.qr-dialog p { font-size: 0.875rem; color: var(--muted); margin: 12px 0 0; }

/* ---------- 頁尾 ---------- */
.footer { margin: 5em 0 2em; text-align: center; }
.footer_copyright { margin: 0; font-size: 13px; color: var(--text); opacity: 0.7; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 100;
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-text);
  font-size: 0.9rem;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 20px);
  transition: opacity 0.2s, transform 0.2s;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

.noscript { text-align: center; color: var(--muted); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

::-webkit-scrollbar { width: 0.5rem; }
::-webkit-scrollbar-thumb { background: #d3d3d4; border-radius: 4px; }

/* ---------- 動畫（同 blog effects.css） ---------- */
@keyframes navSlideIn {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: none; }
}
@keyframes authorSlideIn {
  from { opacity: 0; transform: translateY(30px) scale(0.95); }
  to { opacity: 1; transform: none; }
}
@keyframes glassSlideIn {
  from { opacity: 0; transform: translateY(30px) scale(0.95); }
  to { opacity: 1; transform: none; }
}
@keyframes slideInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 手機 ---------- */
@media (max-width: 768px) {
  .topbar { padding: 10px 16px; }
  .wrapper { padding: 0 16px; }
  .author { margin: 2.5rem 0 2rem; }
  .author-avatar-wrapper { width: 112px; height: 112px; }
  .glass-wrapper { padding: 18px 16px; border-radius: 12px; }
  .header-title::before { left: -16px; }
  .footer { margin-top: 3em; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0s !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}