/* ============================================================
   HKOEA — AI Visual Elements
   1. Hero：影片 + 神經網絡 Canvas 層 + 掃描光
   2. 節點連線圖（驗證流程）
   3. 卡片 hover 資料流光
   4. 全站細微網格與噪點
   ============================================================ */

/* ============================================================
   1. HERO 背景
   ============================================================ */

.hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  background: var(--bg);
  /* 純裝飾層：絕不可攔截指標事件，否則會擋住頁首導覽與語言選單 */
  pointer-events: none;
  user-select: none;
}

.hero__media video,
.hero__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* 影片本身已於 ffmpeg 階段壓暗至平均亮度 46 並加暗角。
   因數據中心細節需要保留可辨識度，此處提高不透明度並減輕遮罩 */
.hero__media video {
  opacity: 0.92;
  filter: saturate(0.95) contrast(1.04);
}

html[data-theme="light"] .hero__media video {
  opacity: 0.4;
  filter: saturate(0.75) brightness(1.6) contrast(0.85);
}

/* 影片之上的漸層遮罩：
   左側為文字區，需較重遮罩確保白色標題對比；
   右側放開，保留數據中心機櫃與走道的可辨識細節 */
.hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, transparent 0%, transparent 62%, var(--bg) 98%),
    linear-gradient(90deg, rgba(7, 7, 10, 0.94) 0%, rgba(7, 7, 10, 0.86) 32%, rgba(7, 7, 10, 0.42) 58%, rgba(7, 7, 10, 0.06) 78%, transparent 92%);
}

html[data-theme="light"] .hero__media::after {
  background:
    linear-gradient(180deg, transparent 0%, transparent 62%, var(--bg) 98%),
    linear-gradient(90deg, rgba(248, 247, 243, 0.95) 0%, rgba(248, 247, 243, 0.88) 32%, rgba(248, 247, 243, 0.45) 58%, rgba(248, 247, 243, 0.1) 78%, transparent 92%);
}

/* 神經網絡 Canvas 層 */
#heroNet {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.75;
  pointer-events: none;
}

html[data-theme="light"] #heroNet {
  opacity: 0.4;
  mix-blend-mode: multiply;
}

/* 掃描光：緩慢自上而下掃過，像 AI 在閱讀頁面 */
.hero__scan {
  position: absolute;
  left: 0;
  right: 0;
  height: 220px;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    transparent,
    rgba(217, 180, 81, 0.055) 45%,
    rgba(240, 220, 164, 0.085) 50%,
    rgba(217, 180, 81, 0.055) 55%,
    transparent
  );
  animation: scanDown 11s cubic-bezier(0.45, 0, 0.55, 1) infinite;
  opacity: 0.9;
}

@keyframes scanDown {
  0% {
    top: -240px;
    opacity: 0;
  }
  12% {
    opacity: 0.9;
  }
  70% {
    opacity: 0.9;
  }
  100% {
    top: 100%;
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero__scan {
    animation: none;
    display: none;
  }
}

/* ============================================================
   2. 全站細微 AI 紋理（網格 + 噪點）
   ============================================================ */

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.4;
  background-image:
    linear-gradient(var(--line2) 1px, transparent 1px),
    linear-gradient(90deg, var(--line2) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: radial-gradient(ellipse 100% 80% at 50% 50%, #000 10%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse 100% 80% at 50% 50%, #000 10%, transparent 85%);
}

main,
.site-footer {
  position: relative;
  z-index: 1;
}

/* Header 必須高於 main，否則語言／主題下拉會被 hero 蓋住。
   sticky 定位本身已建立層疊上下文，此處只確保層級足夠。 */
.site-header {
  position: sticky;
  z-index: 80;
}

/* ============================================================
   3. 職能卡：hover 資料流
   ============================================================ */

.role-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, transparent 30%, var(--gold) 50%, transparent 70%);
  background-size: 220% 220%;
  background-position: 0% 0%;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}

.role-card:hover::before {
  opacity: 1;
  animation: borderFlow 2.4s linear infinite;
}

@keyframes borderFlow {
  0% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 200% 200%;
  }
}

/* 卡片右下角的節點網紋 */
.role-card::after {
  content: "";
  position: absolute;
  right: -30px;
  bottom: -30px;
  width: 130px;
  height: 130px;
  border-radius: 999px;
  background:
    radial-gradient(circle at 50% 50%, rgba(217, 180, 81, 0.14), transparent 62%),
    repeating-conic-gradient(from 0deg, transparent 0deg 22deg, rgba(217, 180, 81, 0.1) 22deg 23deg);
  opacity: 0;
  transition: opacity 0.4s var(--ease), transform 0.6s var(--ease);
  pointer-events: none;
}

.role-card:hover::after {
  opacity: 1;
  transform: scale(1.12);
}

/* ============================================================
   4. 驗證流程：節點連線
   ============================================================ */

.steps {
  position: relative;
}

.step__line {
  height: 2px;
  background: var(--line2);
  overflow: visible;
}

.step__line::after {
  height: 2px;
  box-shadow: 0 0 10px rgba(217, 180, 81, 0.7);
}

/* 線上移動的訊號點 */
.step__line i {
  position: absolute;
  top: 50%;
  left: 0;
  width: 6px;
  height: 6px;
  margin-top: -3px;
  border-radius: 999px;
  background: var(--gold-lt);
  box-shadow: 0 0 12px 3px rgba(240, 220, 164, 0.65);
  opacity: 0;
}

.step.is-in .step__line i {
  opacity: 1;
  animation: pulseTravel 3.4s ease-in-out infinite;
}

.step:nth-child(2).is-in .step__line i {
  animation-delay: 0.5s;
}

.step:nth-child(3).is-in .step__line i {
  animation-delay: 1s;
}

@keyframes pulseTravel {
  0% {
    left: 0;
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    left: calc(100% - 6px);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .step__line i {
    display: none;
  }
}

/* 節點端點 */
.step__num::before {
  content: "";
  position: absolute;
  left: 0;
  top: -33px;
  width: 9px;
  height: 9px;
  border-radius: 999px;
  border: 1.5px solid var(--gold);
  background: var(--bg);
  box-shadow: 0 0 0 3px rgba(217, 180, 81, 0.1);
}

/* ============================================================
   5. 圖片區塊
   ============================================================ */

.figure {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: var(--hair);
  background: var(--panel);
}

.figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.9s var(--ease);
}

.figure:hover img {
  transform: scale(1.035);
}

.figure--tall {
  aspect-ratio: 4 / 5;
}

.figure--wide {
  aspect-ratio: 16 / 10;
}

.figure--square {
  aspect-ratio: 1;
}

/* 圖片上的 AI 疊加層 */
.figure__overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, transparent 40%, rgba(7, 7, 10, 0.82) 100%),
    repeating-linear-gradient(
      0deg,
      transparent 0 3px,
      rgba(217, 180, 81, 0.035) 3px 4px
    );
}

/* 圖片掃描線（hover 時出現） */
.figure__scan {
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 40%;
  background: linear-gradient(180deg, transparent, rgba(217, 180, 81, 0.16), transparent);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
}

.figure:hover .figure__scan {
  opacity: 1;
  animation: figScan 1.8s ease-in-out infinite;
}

@keyframes figScan {
  0% {
    transform: translateY(-60%);
  }
  100% {
    transform: translateY(280%);
  }
}

/* 圖片角標（座標框，像 AI 標註） */
.figure__corner {
  position: absolute;
  width: 16px;
  height: 16px;
  border-color: var(--gold);
  border-style: solid;
  border-width: 0;
  opacity: 0.6;
  pointer-events: none;
}

.figure__corner--tl {
  top: 12px;
  left: 12px;
  border-top-width: 1.5px;
  border-left-width: 1.5px;
}

.figure__corner--br {
  bottom: 12px;
  right: 12px;
  border-bottom-width: 1.5px;
  border-right-width: 1.5px;
}

.figure__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 18px 20px;
  font-size: 0.82rem;
  color: var(--ink2);
  line-height: 1.5;
}

.figure__cap b {
  display: block;
  color: var(--ink);
  font-size: 0.88rem;
  margin-bottom: 3px;
  font-weight: 550;
}

/* 圖片網格 */
.media-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  grid-template-rows: auto auto;
  gap: clamp(14px, 1.6vw, 20px);
}

/* ============================================================
   5b. 問題區視覺化（取代活動照片）
   兩張圖表直接支撐「職稱膨脹、無法驗證」的論點
   ============================================================ */

.pain-viz {
  display: grid;
  gap: clamp(14px, 1.6vw, 20px);
  align-content: start;
}

.viz {
  margin: 0;
  position: relative;
  border: var(--hair);
  border-radius: var(--radius);
  background:
    radial-gradient(ellipse 120% 90% at 50% 0%, rgba(217, 180, 81, 0.05), transparent 62%),
    var(--panel);
  padding: 16px 18px 14px;
  overflow: hidden;
}

.viz::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line2) 1px, transparent 1px),
    linear-gradient(90deg, var(--line2) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.32;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 20%, transparent 78%);
  pointer-events: none;
}

.viz__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 11px;
  margin-bottom: 12px;
  border-bottom: var(--hair);
  position: relative;
}

.viz__idx {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  color: var(--gold);
  flex-shrink: 0;
}

.viz__title {
  font-size: 0.78rem;
  color: var(--ink2);
  letter-spacing: 0.01em;
}

.viz__svg {
  display: block;
  width: 100%;
  height: auto;
  position: relative;
}

.viz__grid line {
  stroke-dasharray: 2 4;
  stroke-opacity: 0.55;
}

.viz__ring {
  transform-origin: center;
  animation: ringIn 1.2s var(--ease) both;
  filter: drop-shadow(0 0 3px rgba(217, 180, 81, 0.28));
}

/* 淺色主題：白底上金色偏淡，需加深描邊並移除發光 */
html[data-theme="light"] .viz__ring {
  filter: none;
}

html[data-theme="light"] .viz__core {
  filter: none;
}

html[data-theme="light"] .viz {
  background:
    radial-gradient(ellipse 120% 90% at 50% 0%, rgba(160, 124, 28, 0.07), transparent 62%),
    var(--panel);
}

.viz__ring--b {
  animation-delay: 0.14s;
}

.viz__ring--c {
  animation-delay: 0.28s;
}

@keyframes ringIn {
  from {
    opacity: 0;
    transform: scale(0.82);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.viz__core {
  animation: coreIn 1s var(--ease) 0.42s both;
}

@keyframes coreIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.viz__coreTxt {
  font-family: var(--font-mono);
  font-size: 7.4px;
  letter-spacing: 0.18em;
  fill: var(--gold-lt);
}

.viz__lbl {
  font-family: var(--font-mono);
  font-size: 8.4px;
  letter-spacing: 0.05em;
  fill: var(--ink2);
}

.viz__lbl--end {
  text-anchor: end;
}

/* ---- 長條圖 ---- */
.viz__bars {
  display: grid;
  gap: 11px;
  padding-top: 2px;
  position: relative;
}

.viz__barrow {
  display: grid;
  grid-template-columns: minmax(74px, 96px) 1fr 42px;
  align-items: center;
  gap: 10px;
}

.viz__barlbl {
  font-size: 0.7rem;
  color: var(--ink2);
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.viz__track {
  position: relative;
  height: 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.055);
  overflow: hidden;
}

html[data-theme="light"] .viz__track {
  background: rgba(21, 21, 23, 0.07);
}

.viz__track i {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--w, 0%);
  border-radius: inherit;
  background: linear-gradient(90deg, var(--gold-dk), var(--gold));
  transform-origin: 0 50%;
  animation: barIn 1.1s var(--ease) both;
}

.viz__barrow:nth-child(2) .viz__track i {
  animation-delay: 0.1s;
}

.viz__barrow:nth-child(3) .viz__track i {
  animation-delay: 0.2s;
}

@keyframes barIn {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

/* 第三條：可信度落差，用空心／斜紋表現「虛」 */
.viz__barrow--ghost .viz__track i {
  background: repeating-linear-gradient(
    115deg,
    rgba(217, 180, 81, 0.55) 0 3px,
    rgba(217, 180, 81, 0.12) 3px 6px
  );
  box-shadow: inset 0 0 0 1px rgba(217, 180, 81, 0.45);
}

.viz__barval {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--gold);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.viz__barrow--ghost .viz__barval {
  color: var(--muted);
}

.viz__barval small {
  font-size: 0.62rem;
  opacity: 0.7;
}

.viz__cap {
  margin-top: 12px;
  padding-top: 10px;
  border-top: var(--hair);
  font-size: 0.72rem;
  line-height: 1.55;
  color: var(--muted);
  position: relative;
}

@media (prefers-reduced-motion: reduce) {
  .viz__ring,
  .viz__core,
  .viz__track i {
    animation: none;
  }
}

.media-grid .figure:first-child {
  grid-row: span 2;
  aspect-ratio: 3 / 4;
}

.media-grid .figure:not(:first-child) {
  aspect-ratio: 4 / 3;
}

@media (max-width: 780px) {
  .media-grid {
    grid-template-columns: 1fr;
  }

  .media-grid .figure:first-child {
    grid-row: auto;
    aspect-ratio: 4 / 3;
  }
}

/* ============================================================
   6. 統計數字：數字翻牌光效
   ============================================================ */

.stat__num {
  position: relative;
  display: inline-block;
}

.stat__num::after {
  content: "";
  position: absolute;
  inset: -4px -8px;
  background: radial-gradient(ellipse at center, rgba(217, 180, 81, 0.18), transparent 70%);
  opacity: 0;
  animation: statGlow 3.5s ease-in-out infinite;
  pointer-events: none;
}

.stat__num:nth-of-type(2)::after {
  animation-delay: 0.7s;
}

@keyframes statGlow {
  0%,
  100% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .stat__num::after {
    animation: none;
  }
}

/* ============================================================
   7. 認證階梯：連接線
   ============================================================ */

.cert-levels {
  position: relative;
}

.cert-level {
  position: relative;
}

.cert-level:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -1px;
  top: 50%;
  width: 1px;
  height: 0;
  background: linear-gradient(180deg, transparent, var(--gold), transparent);
  opacity: 0.55;
}

@media (max-width: 1024px) {
  .cert-level:not(:last-child)::after {
    display: none;
  }
}

/* ============================================================
   8. 降級與效能
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  .role-card:hover::before {
    animation: none;
  }

  .figure:hover .figure__scan {
    animation: none;
  }
}

/* 低效能裝置：關閉最貴的圖層 */
body.is-lowpower #heroNet,
body.is-lowpower .hero__scan,
body.is-lowpower .role-card::after {
  display: none;
}

/* ============================================================
   9. 痛點區：圖文雙欄（左：圖表 ／ 右：文字）
   ============================================================ */

.pain-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(20px, 3vw, 40px);
  align-items: stretch;
}

/* 左欄圖表隨右欄高度伸展：兩張圖按比例分配剩餘空間，
   使欄底與文字欄底部齊平（三語文案長度不同，落差由圖表高度吸收）。
   SVG 使用 preserveAspectRatio 保持等比，圖形不會被拉扁。 */
.pain-layout .pain-viz {
  position: sticky;
  top: 96px;
  align-content: start;
  grid-auto-rows: auto;
  height: 100%;
}

.pain-layout .pain-viz > .viz {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.pain-layout .pain-viz > .viz > .viz__svg {
  flex: 0 0 auto;
  height: auto;
  min-height: 0;
}

.pain-layout .pain-viz > .viz > .viz__bars {
  flex: 1 1 auto;
  align-content: center;
  gap: 14px;
}

.pain-layout .pain {
  grid-template-columns: 1fr;
}

/* 右欄縱向列表：三張卡收緊內距，使總高貼近左側圖表欄 */
.pain-layout .pain .pain__item {
  padding: clamp(15px, 1.5vw, 19px) clamp(17px, 1.7vw, 22px);
}

.pain-layout .pain .pain__num {
  margin-bottom: 9px;
}

.pain-layout .pain .pain__item h3 {
  margin-bottom: 7px;
}

.pain-layout .pain .pain__item p {
  font-size: 0.875rem;
  line-height: 1.55;
}

@media (max-width: 1024px) {
  .pain-layout {
    grid-template-columns: 1fr;
  }

  .pain-layout .pain-viz {
    position: static;
    height: auto;
    grid-auto-rows: auto;
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .pain-layout .pain-viz > .viz > .viz__svg {
    flex: 0 0 auto;
    height: auto;
  }

  .pain-layout .pain {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }
}

@media (max-width: 720px) {
  .pain-layout .pain-viz {
    grid-template-columns: 1fr;
  }
}

.process-layout {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: clamp(26px, 4vw, 64px);
  align-items: start;
}

.process-side {
  position: sticky;
  top: 96px;
}

@media (max-width: 960px) {
  .process-layout {
    grid-template-columns: 1fr;
  }

  .process-side {
    position: static;
    order: -1;
  }

  .process-side .figure--tall {
    aspect-ratio: 16 / 10;
  }
}

/* ============================================================
   11. 薪酬區：圖 + 長條並列
   ============================================================ */

.band-wrap {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

.band-figure {
  position: sticky;
  top: 96px;
  aspect-ratio: 3 / 4;
}

.band-wrap + p,
.band-wrap ~ p {
  margin-left: 0;
}

@media (max-width: 900px) {
  .band-wrap {
    grid-template-columns: 1fr;
  }

  .band-figure {
    position: static;
    aspect-ratio: 16 / 9;
  }
}

/* ============================================================
   12. 全域防護：裝飾層不得攔截指標事件
   （曾出現 hero 影片層擋住語言選單點擊，此處一次性收口）
   ============================================================ */
.hero__media,
.hero__media video,
.hero__media img,
.hero__media::before,
.hero__media::after,
.hero__scan,
#heroNet,
.figure__scan,
.figure__overlay,
.figure__corner,
.role-card::before,
.role-card::after,
.step__line i,
body::before {
  pointer-events: none;
}

/* 淺色主題：白底會吃掉淡金描邊，需提高不透明度並加深描邊色 */
html[data-theme="light"] .viz {
  --ring-a: 1;
  --ring-b: 0.9;
  --ring-c: 0.78;
  --ring-core: 1;
}

html[data-theme="light"] .viz__svg {
  --gold: #8a6a10;
}

html[data-theme="light"] .viz__lbl,
html[data-theme="light"] .viz__coreTxt {
  fill: #6b5310;
}

html[data-theme="light"] .viz__grid line {
  stroke-opacity: 0.14;
}

html[data-theme="light"] .viz__track {
  background: rgba(21, 21, 23, 0.09);
}

/* 淺色主題再加強：邊框與面板底色需與白底拉開層次 */
html[data-theme="light"] .viz {
  border-color: rgba(21, 21, 23, 0.14);
  box-shadow: 0 1px 2px rgba(70, 58, 22, 0.05);
}

html[data-theme="light"] .viz__head {
  border-bottom-color: rgba(21, 21, 23, 0.1);
}

html[data-theme="light"] .viz::before {
  opacity: 0.5;
}

html[data-theme="light"] .viz__cap {
  border-top-color: rgba(21, 21, 23, 0.1);
  color: #55555f;
}

html[data-theme="light"] .viz__title {
  color: #3a3a42;
}

/* ---- 來源註腳：圖表若引用市場數據，必須標明來源與年份 ----
   現階段數字屬示例，上線前須換成可引用的調查或平台報告並更新此處文案，
   或整行移除；保留空標記會比沒有標記更損可信度。 */
.viz__src {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  line-height: 1.5;
  color: var(--muted);
  opacity: 0.78;
  position: relative;
}

html[data-theme="light"] .viz__src {
  color: #6d6d78;
  opacity: 1;
}