/* ============================================================
   天使光卡 · Angels of Light — style.css
   三主題（night / dawn / white）以 CSS 變數驅動，JS 只切換 data-theme。
   ============================================================ */

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

:root {
  --cw: 150px;            /* 卡片基準寬 */
  --ch: 225px;            /* 卡片基準高 */
  --ease-pop: cubic-bezier(.2, .85, .25, 1.05);
  --font-zh: "Microsoft JhengHei", "微軟正黑體", "PingFang TC", sans-serif;
  --font-en: Arial, Helvetica, sans-serif;
  --heading-font: var(--font-zh);
}

/* ---------- 主題 A：深夜星空 × 流光金 ---------- */
:root[data-theme="night"] {
  --bg-grad: radial-gradient(120% 120% at 50% -10%, #1b2256 0%, #0b0f33 45%, #05030f 100%);
  --ink: #f4ecd8;
  --ink-dim: #b7b2cf;
  --accent: #eccd7c;
  --accent-soft: #f7e6b0;
  --card-grad: linear-gradient(160deg, #2a3170 0%, #161a47 55%, #0d1030 100%);
  --card-border: rgba(236, 205, 124, .75);
  --panel-bg: rgba(20, 24, 58, .55);
  --panel-border: rgba(236, 205, 124, .28);
  --glow: rgba(247, 224, 150, .9);
  --star-color: #fdf6df;
  --star-opacity: 1;
  --shadow: rgba(0, 0, 0, .55);
  --aff-bg: rgba(236, 205, 124, .14);
  --orb-1: rgba(120, 110, 220, .35);
  --orb-2: rgba(236, 205, 124, .22);
}

/* ---------- 主題 B：晨曦水彩 × 柔霧粉 ---------- */
:root[data-theme="dawn"] {
  --bg-grad: radial-gradient(120% 120% at 50% -10%, #ffe6d4 0%, #f7d7e0 42%, #ddd0ef 100%);
  --ink: #5b4651;
  --ink-dim: #9a8694;
  --accent: #c97f9c;
  --accent-soft: #e3a9b8;
  --card-grad: linear-gradient(160deg, #fff3ec 0%, #fbe3ec 55%, #ecdcf4 100%);
  --card-border: rgba(201, 127, 156, .65);
  --panel-bg: rgba(255, 250, 252, .62);
  --panel-border: rgba(201, 127, 156, .3);
  --glow: rgba(245, 190, 210, .95);
  --star-color: #ffffff;
  --star-opacity: .55;
  --shadow: rgba(150, 110, 130, .3);
  --aff-bg: rgba(201, 127, 156, .14);
  --orb-1: rgba(255, 200, 170, .5);
  --orb-2: rgba(210, 170, 230, .45);
}

/* ---------- 主題 C：純白 × 燙金 ---------- */
:root[data-theme="white"] {
  --bg-grad: linear-gradient(165deg, #fbfaf6 0%, #f1efe7 100%);
  --ink: #2c2a25;
  --ink-dim: #837d71;
  --accent: #bfa15a;
  --accent-soft: #d8c089;
  --card-grad: linear-gradient(160deg, #ffffff 0%, #f8f5ec 100%);
  --card-border: rgba(191, 161, 90, .7);
  --panel-bg: rgba(255, 255, 255, .78);
  --panel-border: rgba(191, 161, 90, .3);
  --glow: rgba(216, 192, 137, .9);
  --star-color: #d8c089;
  --star-opacity: .35;
  --shadow: rgba(120, 105, 70, .22);
  --aff-bg: rgba(191, 161, 90, .12);
  --orb-1: rgba(216, 192, 137, .3);
  --orb-2: rgba(200, 190, 160, .25);
  --heading-font: "Noto Serif TC", "Songti TC", Georgia, "Times New Roman", serif;
}

/* ---------- 版面基礎 ---------- */
html, body { height: 100%; }
body {
  min-height: 100%;
  font-family: var(--font-zh);
  color: var(--ink);
  background: var(--bg-grad);
  background-attachment: fixed;
  overflow-x: hidden;
  transition: color .6s ease, background .6s ease;
  -webkit-font-smoothing: antialiased;
  /* 防止選取複製文字／長按跳出圖片選單（配合 js/main.js 擋右鍵） */
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

img { -webkit-user-drag: none; user-drag: none; pointer-events: none; }

/* ---------- 背景：星空 / 光暈 ---------- */
.sky { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.stars { position: absolute; inset: 0; opacity: var(--star-opacity); transition: opacity .6s ease; }
.star {
  position: absolute;
  width: 2px; height: 2px; border-radius: 50%;
  background: var(--star-color);
  box-shadow: 0 0 6px 1px var(--star-color);
  animation: twinkle var(--tw, 4s) ease-in-out infinite;
  animation-delay: var(--td, 0s);
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: .8;
  animation: orb-drift 22s ease-in-out infinite alternate;
}
.orb--1 { width: 42vmin; height: 42vmin; left: -8vmin; top: 8vmin; background: var(--orb-1); }
.orb--2 { width: 36vmin; height: 36vmin; right: -6vmin; bottom: 4vmin; background: var(--orb-2); animation-delay: -8s; }

@keyframes twinkle { 0%, 100% { opacity: .25; transform: scale(.8); } 50% { opacity: 1; transform: scale(1.15); } }
@keyframes orb-drift { from { transform: translate(0, 0); } to { transform: translate(4vmin, -3vmin); } }

/* ---------- 頂列 ---------- */
.topbar {
  position: relative; z-index: 5;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px clamp(16px, 4vw, 48px);
}
.topbar-left { display: flex; flex-direction: column; gap: 8px; }
.back-link {
  align-self: flex-start;
  font-family: var(--font-zh);
  font-size: 13px; font-weight: 700; letter-spacing: .02em;
  color: var(--ink-dim);
  text-decoration: none;
  padding: 5px 12px; border-radius: 999px;
  border: 1.5px solid var(--panel-border);
  background: var(--panel-bg);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: color .25s ease, border-color .25s ease, transform .2s ease;
}
.back-link:hover { color: var(--accent); border-color: var(--accent); transform: translateX(-2px); }
.brand {
  font-family: var(--heading-font);
  font-size: clamp(18px, 2.4vw, 26px);
  font-weight: 700; letter-spacing: .12em;
  color: var(--accent);
  text-shadow: 0 0 18px var(--glow);
}
.brand span {
  display: block;
  font-size: .52em; letter-spacing: .34em;
  color: var(--ink-dim); font-weight: 400; margin-top: 4px;
  text-shadow: none;
}

/* 主題切換鈕 */
.themes { display: flex; gap: 10px; }
.theme-dot {
  width: 26px; height: 26px; border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .55);
  cursor: pointer; padding: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .25);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.theme-dot:hover { transform: scale(1.15); }
.theme-dot[data-set-theme="night"] { background: linear-gradient(135deg, #2a3170, #eccd7c); }
.theme-dot[data-set-theme="dawn"]  { background: linear-gradient(135deg, #f7d7e0, #c97f9c); }
.theme-dot[data-set-theme="white"] { background: linear-gradient(135deg, #ffffff, #bfa15a); }
.theme-dot[aria-pressed="true"] {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--glow), 0 2px 10px rgba(0, 0, 0, .3);
  transform: scale(1.12);
}

/* 工具列：排列切換 + 音樂 + 主題 */
.tools { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; justify-content: flex-end; }
.layouts { display: flex; gap: 6px; }
.tool-chip {
  width: 30px; height: 30px; border-radius: 9px;
  border: 1.5px solid var(--panel-border);
  background: var(--panel-bg);
  color: var(--ink-dim);
  font-family: var(--heading-font); font-size: 15px; line-height: 1;
  cursor: pointer; padding: 0;
  display: grid; place-items: center;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: color .25s ease, border-color .25s ease, box-shadow .25s ease, transform .2s ease;
}
.tool-chip:hover { transform: translateY(-2px); color: var(--accent); }
.tool-chip[aria-pressed="true"], .tool-chip.is-on {
  color: var(--accent); border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--glow);
}
.tool-chip.music { font-size: 17px; }

/* ---------- 舞台 ---------- */
.stage {
  position: relative; z-index: 2;
  min-height: calc(100vh - 88px);
  display: grid; place-items: center;
  padding: 10px 16px 40px;
}

/* phase 顯示控制 */
.deck-area, .fan, .reading { grid-area: 1 / 1; }
.fan, .reading { opacity: 0; pointer-events: none; transition: opacity .5s ease; }

.stage[data-phase="idle"]      .deck-area,
.stage[data-phase="shuffling"] .deck-area { opacity: 1; }
.stage[data-phase="fanned"]    .deck-area { opacity: 0; pointer-events: none; transition: opacity .35s ease; }

.stage[data-phase="fanned"] .fan { opacity: 1; pointer-events: auto; }
.stage[data-phase="reveal"] .reading { opacity: 1; pointer-events: auto; }

/* ---------- 牌堆（IDLE） ---------- */
.deck-area { display: flex; flex-direction: column; align-items: center; gap: 26px; }
.deck {
  position: relative;
  width: var(--cw); height: var(--ch);
  background: none; border: 0; cursor: pointer;
  animation: float 6s ease-in-out infinite;
}
.deck-card {
  position: absolute; inset: 0;
  border-radius: 14px;
  background: var(--card-grad);
  border: 1.5px solid var(--card-border);
  box-shadow: 0 10px 30px var(--shadow);
  transform: translate(var(--ox, 0), var(--oy, 0)) rotate(var(--or, 0deg));
}
/* 疊放錯位（由 JS 設定 --ox/--oy/--or，這裡給 fallback） */
.deck-card:nth-child(1) { --oy: 0px;  --or: 0deg; }
.deck-card:nth-child(2) { --oy: -3px; --or: -2deg; }
.deck-card:nth-child(3) { --oy: -6px; --or: 2.4deg; }
.deck-card:nth-child(4) { --oy: -9px; --or: -1.4deg; }

/* 頂牌的徽記與流光 */
.deck-card:last-child::after { content: ""; position: absolute; inset: 0; border-radius: 14px; }
.deck-card.top { display: grid; place-items: center; overflow: hidden; }
.emblem {
  position: relative; width: 56%; aspect-ratio: 1; border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, var(--accent-soft) 0 14%, transparent 16%),
    repeating-conic-gradient(var(--accent) 0deg 5deg, transparent 5deg 15deg);
  -webkit-mask: radial-gradient(circle at 50% 50%, #000 0 50%, transparent 51%);
          mask: radial-gradient(circle at 50% 50%, #000 0 50%, transparent 51%);
  opacity: .9;
  filter: drop-shadow(0 0 8px var(--glow));
}
.emblem::after {
  content: ""; position: absolute; inset: 30%;
  border-radius: 50%; background: radial-gradient(circle, var(--accent-soft), transparent 70%);
}
/* 卡背流光掃過 */
.shimmer-layer {
  position: absolute; inset: 0; border-radius: 14px; overflow: hidden; pointer-events: none;
}
.shimmer-layer::before {
  content: ""; position: absolute; top: -60%; left: -120%;
  width: 60%; height: 220%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .35), transparent);
  transform: rotate(18deg);
  animation: shimmer 5s ease-in-out infinite;
}

@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes shimmer { 0% { left: -120%; } 60%, 100% { left: 140%; } }

/* 洗牌 */
.stage[data-phase="shuffling"] .deck { animation: deck-shake .5s ease-in-out 2; }
.stage[data-phase="shuffling"] .deck-card:nth-child(4) { animation: riffle-l .5s ease-in-out 2; }
.stage[data-phase="shuffling"] .deck-card:nth-child(3) { animation: riffle-r .5s ease-in-out 2; }
.stage[data-phase="shuffling"] .deck-card:nth-child(2) { animation: riffle-l .5s ease-in-out 2 .1s; }
@keyframes deck-shake { 0%, 100% { transform: rotate(0); } 25% { transform: rotate(-2deg); } 75% { transform: rotate(2deg); } }
@keyframes riffle-l { 0%, 100% { transform: translate(var(--ox, 0), var(--oy, 0)) rotate(var(--or, 0)); } 50% { transform: translate(-90px, -30px) rotate(-14deg); } }
@keyframes riffle-r { 0%, 100% { transform: translate(var(--ox, 0), var(--oy, 0)) rotate(var(--or, 0)); } 50% { transform: translate(90px, -30px) rotate(14deg); } }

/* ---------- 提示文字 ---------- */
.hint {
  font-size: clamp(14px, 2vw, 17px); letter-spacing: .12em;
  color: var(--ink-dim);
  animation: breathe 3.4s ease-in-out infinite;
}
.fan-hint {
  position: absolute; bottom: 6%; left: 0; right: 0; text-align: center;
  font-size: clamp(14px, 2vw, 17px); letter-spacing: .14em; color: var(--ink-dim);
  opacity: 0; transition: opacity .5s ease .2s;
  pointer-events: none;
}
.stage[data-phase="fanned"] .fan-hint { opacity: 1; animation: breathe 3.4s ease-in-out infinite; }
@keyframes breathe { 0%, 100% { opacity: .5; } 50% { opacity: 1; } }

/* ---------- 扇形展開 ---------- */
.fan {
  position: relative;
  width: min(94vw, 880px); height: min(72vh, 580px);
  align-self: center;
}

/* 牌卡共用樣式（52 張密排，尺寸略縮）：以容器中心為基準，位置由 --tx/--ty/--rot 決定 */
.fan-card {
  position: absolute; left: 50%; top: 50%;
  width: calc(var(--cw) * .78); height: calc(var(--ch) * .78);
  margin: calc(var(--ch) * -.39) 0 0 calc(var(--cw) * -.39);
  border-radius: 12px;
  background: var(--card-grad);
  border: 1.5px solid var(--card-border);
  box-shadow: 0 8px 22px var(--shadow);
  transform: translate(0, 0) rotate(0) scale(.9);
  transition: transform .55s var(--ease-pop), box-shadow .3s ease, filter .3s ease, opacity .45s ease;
  transition-delay: calc(var(--i) * .016s);
  cursor: pointer;
  display: grid; place-items: center;
  overflow: hidden;
}
.fan-card .emblem { width: 50%; }

/* 展開後就位（扇形 / 弧形 / 圓形 共用位移公式） */
.fan.is-spread .fan-card {
  transform: translate(var(--tx, 0), var(--ty, 0)) rotate(var(--rot, 0)) scale(1);
}
.fan.is-spread .fan-card:hover {
  transform: translate(var(--tx, 0), calc(var(--ty, 0) - 26px)) rotate(var(--rot, 0)) scale(1.05);
  box-shadow: 0 16px 34px var(--shadow);
  filter: brightness(1.12);
  z-index: 60;
}
.fan-card.is-picked {
  transform: translate(var(--tx, 0), calc(var(--ty, 0) - 44px)) rotate(var(--rot, 0)) scale(1.08) !important;
  filter: brightness(1.3); z-index: 80;
}
.fan.is-dismiss .fan-card:not(.is-picked) {
  opacity: 0;
  transform: translate(var(--tx, 0), calc(var(--ty, 0) + 60px)) rotate(var(--rot, 0)) scale(.85);
  transition: transform .5s ease, opacity .45s ease;
}

/* ---------- 抽到的牌：揭示視圖 ---------- */
.reading {
  width: min(1080px, 94vw);
  display: flex; gap: clamp(20px, 4vw, 52px);
  align-items: center; justify-content: center;
  flex-wrap: wrap;
}

/* 左欄：卡片 + 其下方的「再抽一張」按鈕 */
.reveal-left {
  flex: 0 0 auto;
  display: flex; flex-direction: column; align-items: center; gap: 20px;
}

/* 3D 卡片容器：外層管位移/縮放，內層管翻轉 */
.reveal-card {
  position: relative;
  width: calc(var(--cw) * 1.7); height: calc(var(--ch) * 1.7);
  transition: transform .6s var(--ease-pop), opacity .6s ease;
  perspective: 1400px;
}
.reveal-card.is-entering { transform: translateY(46px) scale(.66); opacity: 0; }

.card3d {
  position: relative; width: 100%; height: 100%;
  transform-style: preserve-3d;
  transition: transform .85s cubic-bezier(.45, .05, .25, 1);
}
.card3d.is-flipped { transform: rotateY(180deg); }
.card-face {
  position: absolute; inset: 0; border-radius: 18px;
  -webkit-backface-visibility: hidden; backface-visibility: hidden;
  overflow: hidden;
  box-shadow: 0 24px 60px var(--shadow);
}
.card-face--back {
  background: var(--card-grad);
  border: 2px solid var(--card-border);
  display: grid; place-items: center;
}
.card-face--back .emblem { width: 52%; }
.card-face--front {
  transform: rotateY(180deg);
  background: var(--card-grad);
  border: 2px solid var(--card-border);
}
.card-face--front img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.card-name {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 30px 16px 16px; text-align: center;
  background: linear-gradient(transparent, rgba(0, 0, 0, .72));
  color: #fff;
}
.card-name .zh { font-family: var(--heading-font); font-size: 22px; font-weight: 700; letter-spacing: .08em; }
.card-name .en { font-family: var(--font-en); font-size: 13px; letter-spacing: .22em; opacity: .85; margin-top: 2px; }

/* 無圖佔位正面 */
.card-face--front.is-placeholder {
  display: grid; grid-template-rows: 1fr auto; place-items: center;
  padding: 24px 18px;
}
.card-face--front.is-placeholder .emblem { width: 46%; align-self: end; }
.card-face--front.is-placeholder .ph-name { text-align: center; padding-bottom: 18px; }
.card-face--front.is-placeholder .ph-name .zh {
  font-family: var(--heading-font); font-size: 26px; font-weight: 700;
  color: var(--accent); letter-spacing: .1em; text-shadow: 0 0 14px var(--glow);
}
.card-face--front.is-placeholder .ph-name .en {
  font-family: var(--font-en); font-size: 13px; letter-spacing: .24em;
  color: var(--ink-dim); margin-top: 6px;
}

/* 星塵與光暈 */
.fx { position: absolute; inset: 0; pointer-events: none; z-index: 5; }
.glow-burst {
  position: absolute; inset: 0; margin: auto;
  width: 60%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle, var(--glow) 0%, transparent 65%);
  opacity: 0; transform: scale(.3);
}
.glow-burst.go { animation: glow-pulse .9s ease-out forwards; }
@keyframes glow-pulse {
  0% { opacity: 0; transform: scale(.3); }
  35% { opacity: .9; }
  100% { opacity: 0; transform: scale(1.8); }
}
.sparkle {
  position: absolute; top: 50%; left: 50%; margin: -4px 0 0 -4px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-soft);
  box-shadow: 0 0 8px 2px var(--glow);
  opacity: 0;
  animation: sparkle-fly var(--sd, .8s) ease-out forwards;
  animation-delay: var(--sdelay, 0s);
}
@keyframes sparkle-fly {
  0% { opacity: 0; transform: translate(0, 0) scale(.2); }
  20% { opacity: 1; }
  100% { opacity: 0; transform: translate(var(--tx, 0), var(--ty, 0)) scale(1); }
}

/* ---------- 閱讀文字 ---------- */
.reading-text {
  flex: 1 1 340px; max-width: 520px;
  max-height: 74vh; overflow-y: auto;
  padding: clamp(18px, 2.4vw, 30px);
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 18px 50px var(--shadow);
}
.rv {
  opacity: 0; transform: translateY(12px);
  transition: opacity .55s ease, transform .55s ease;
  transition-delay: calc(var(--i, 0) * .12s);
}
.reading-text.is-revealed .rv { opacity: 1; transform: none; }

.rt-title { margin-bottom: 4px; }
.rt-title .zh { font-family: var(--heading-font); font-size: clamp(26px, 3.4vw, 34px); font-weight: 700; color: var(--accent); letter-spacing: .06em; }
.rt-title .en { font-family: var(--font-en); font-size: 15px; letter-spacing: .26em; color: var(--ink-dim); margin-top: 2px; text-transform: uppercase; }
.rt-divider { height: 1px; background: linear-gradient(90deg, transparent, var(--card-border), transparent); margin: 18px 0; }
.rt-lang-label { font-size: 12px; letter-spacing: .3em; color: var(--ink-dim); margin: 4px 0 10px; text-transform: uppercase; }
.rt-p { line-height: 1.95; margin-bottom: 12px; color: var(--ink); font-size: clamp(14px, 1.7vw, 16px); }
.rt-p.en { font-family: var(--font-en); line-height: 1.7; color: var(--ink-dim); }
.rt-aff {
  margin: 6px 0 4px; padding: 14px 18px;
  background: var(--aff-bg); border-left: 3px solid var(--accent);
  border-radius: 8px; line-height: 1.8;
}
.rt-aff .label { display: block; font-size: 12px; letter-spacing: .28em; color: var(--accent); margin-bottom: 6px; }
.rt-aff .zh { font-family: var(--heading-font); font-weight: 600; }
.rt-aff .en { font-family: var(--font-en); white-space: pre-line; }
.rt-source { margin-top: 16px; font-size: 12px; color: var(--ink-dim); letter-spacing: .04em; opacity: .8; }

/* ---------- 「再抽一張」按鈕（位於卡片下方） ---------- */
.btn {
  font-family: var(--font-zh); font-size: 16px; letter-spacing: .14em;
  color: var(--ink);
  padding: 12px 30px; border-radius: 999px;
  background: transparent;
  border: 1.5px solid var(--accent);
  cursor: pointer;
  transition: background .3s ease, color .3s ease, transform .2s ease, box-shadow .3s ease, opacity .4s ease;
}
.btn:hover { background: var(--accent); color: #1a1410; box-shadow: 0 0 22px var(--glow); transform: translateY(-2px); }
.btn[hidden] { display: none; }

/* ---------- 響應式 ---------- */
@media (max-width: 760px) {
  :root { --cw: 122px; --ch: 183px; }
  .topbar { flex-wrap: wrap; gap: 12px; justify-content: center; padding: 16px; }
  .tools { justify-content: center; width: 100%; }
  .reading { flex-direction: column; }
  .reveal-card { width: calc(var(--cw) * 1.45); height: calc(var(--ch) * 1.45); }
  .reading-text { max-height: 48vh; width: 100%; }
  .brand span { letter-spacing: .2em; }
}
@media (max-width: 420px) {
  :root { --cw: 110px; --ch: 165px; }
}

/* ---------- 尊重「減少動態」 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .15s !important;
  }
  .deck { animation: none; }
  .star { animation: none; opacity: .6; }
  .shimmer-layer::before { display: none; }
}