@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@400;500;700&display=swap');

/* 太極拳總會新竹分會 Bootstrap 5 自適應主題樣式 */

:root {
  --taiji-primary: #1e293b;       /* 深邃水墨藍黑 */
  --taiji-primary-dark: #0f172a;  /* 頁首/頁尾極深藍 */
  --taiji-accent: #991b1b;        /* 傳統印泥朱紅 */
  --taiji-accent-hover: #b91c1c;  
  --taiji-gold: #d97706;          /* 典雅金 */
  --taiji-bg: #f8fafc;            /* 柔和淺灰背景 */
  --taiji-card-bg: #ffffff;
  --taiji-text: #1e293b;
  --taiji-text-muted: #64748b;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--taiji-bg);
  color: var(--taiji-text);
  font-family: "Noto Sans TC", "Microsoft JhengHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.8;
  font-size: 1.05rem;
}

/* Normalize all site text to Noto Sans TC design system font, overriding inline legacy font-family declarations while preserving FontAwesome icons. */
:where(
  body,
  #app,
  main,
  article,
  div,
  p,
  span:not([class*="fa-"]):not([class*="fa"]),
  font,
  a,
  b,
  strong,
  h1,
  h2,
  h3,
  h4,
  h5,
  h6,
  li,
  td,
  th,
  table,
  tr,
  button,
  input,
  select,
  textarea
) {
  font-family: "Noto Sans TC", "Microsoft JhengHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

[style*="font-family"]:not([class*="fa-"]):not([class*="fa"]) {
  font-family: "Noto Sans TC", "Microsoft JhengHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif !important;
}

/* Header & Banner */
.taiji-header {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border-bottom: 4px solid var(--taiji-accent);
}

.taiji-logo-img {
  max-height: 75px;
  width: auto;
  filter: drop-shadow(0px 2px 4px rgba(0,0,0,0.3));
}

.taiji-site-title {
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 1px;
}

.taiji-site-title-image {
  display: block;
  width: min(100%, 62rem);
  max-height: 6rem;
  height: auto;
  padding: 0.3rem 0.6rem;
  background-color: transparent;
  border-radius: 4px;
  object-fit: contain;
  object-position: left center;
  filter: drop-shadow(0px 2px 4px rgba(0, 0, 0, 0.5));
}

.taiji-site-subtitle {
  color: #cbd5e1;
  font-size: 0.9rem;
}

/* Navbar */
.taiji-navbar {
  background-color: var(--taiji-primary) !important;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.taiji-navbar .nav-link {
  color: #f1f5f9 !important;
  font-weight: 500;
  padding: 0.6rem 1rem !important;
  transition: all 0.2s ease;
}

.taiji-navbar .nav-link:hover,
.taiji-navbar .nav-link:focus {
  color: #fbbf24 !important;
  background-color: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
}

.taiji-navbar .dropdown-menu {
  background-color: var(--taiji-primary-dark);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

.taiji-navbar .dropdown-item {
  color: #e2e8f0;
  padding: 0.5rem 1.2rem;
  transition: background-color 0.15s;
}

.taiji-navbar .dropdown-item:hover {
  background-color: var(--taiji-accent);
  color: #ffffff;
}

/* Sidebar Menu Card (側邊選單) */
.taiji-sidebar-card {
  border: none;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  background-color: var(--taiji-card-bg);
  overflow: hidden;
}

.taiji-sidebar-card.sticky-sidebar,
.sticky-sidebar {
  position: sticky;
  top: 80px;
  z-index: 10;
}

.taiji-sidebar-header {
  background-color: var(--taiji-primary);
  color: #ffffff;
  font-weight: 700;
  padding: 0.85rem 1.2rem;
  border-bottom: 3px solid var(--taiji-accent);
}

.taiji-sidebar-menu .list-group-item {
  border: none;
  border-bottom: 1px solid #f1f5f9;
  color: var(--taiji-text);
  font-weight: 500;
  padding: 0.75rem 1.25rem;
  transition: all 0.2s ease-in-out;
}

.taiji-sidebar-menu .list-group-item:hover {
  background-color: #f1f5f9;
  color: var(--taiji-accent);
  padding-left: 1.5rem;
}

.taiji-sidebar-menu .list-group-item.active {
  background-color: var(--taiji-accent);
  color: #ffffff;
  font-weight: 600;
}

/* Main Content Card */
.taiji-main-card {
  background-color: var(--taiji-card-bg);
  border: none;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  padding: 2rem;
  margin-bottom: 2rem;
}

.taiji-article-title {
  color: var(--taiji-primary);
  font-weight: 700;
  border-bottom: 2px solid var(--taiji-accent);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
}

.taiji-section-title {
  color: var(--taiji-accent);
  font-weight: 700;
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}

/* Health article directory */
.health-article-directory {
  max-width: 70rem;
}

.health-directory-intro {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid #e2e8f0;
  margin-bottom: 1.25rem;
}

.health-directory-eyebrow {
  color: var(--taiji-accent);
  font-size: 0.9rem;
  font-weight: 700;
}

.health-directory-image {
  width: 11rem;
  min-width: 11rem;
  height: 7rem;
  margin: 0;
  object-fit: cover;
}

.health-search .input-group-text {
  background-color: var(--taiji-primary);
  border-color: var(--taiji-primary);
  color: #ffffff;
}

.health-search .form-control:focus {
  border-color: var(--taiji-gold);
  box-shadow: 0 0 0 0.2rem rgba(217, 119, 6, 0.15);
}

.health-article-count {
  color: var(--taiji-text-muted);
  font-size: 0.9rem;
}

.health-article-list {
  border-top: 1px solid #e2e8f0;
}

.health-article-item {
  display: grid;
  grid-template-columns: 6.75rem minmax(0, 1fr) 1.5rem;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 0.75rem;
  border-bottom: 1px solid #e2e8f0;
  color: var(--taiji-text);
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease, padding-left 0.2s ease;
}

.health-article-item:hover,
.health-article-item:focus-visible {
  background-color: #fff7ed;
  color: var(--taiji-accent);
  padding-left: 1.1rem;
  outline: none;
}

.health-article-date {
  color: var(--taiji-text-muted);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
}

.health-article-title {
  font-weight: 500;
}

/* Master news articles */
.cxw-news-article {
  max-width: 62rem;
  margin: 0 auto;
  color: var(--taiji-text);
  font-size: 1.05rem;
  line-height: 1.9;
}

.cxw-news-article .taiji-article-title {
  margin-top: 0;
}

.cxw-news-article img {
  max-width: min(100%, 25rem);
  height: auto;
  margin: 0 0 1rem 1.25rem;
  border: 1px solid #cbd5e1;
}

.cxw-article-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.skill-directory-section {
  padding: 1.25rem 0.75rem;
  border-top: 1px solid #e2e8f0;
  transition: background-color 0.2s ease;
}

.skill-directory-section:hover {
  background-color: #fffbeb;
}

.skill-directory-heading {
  color: var(--taiji-primary);
  font-weight: 700;
  margin-bottom: 0.8rem;
}

.skill-directory-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.skill-directory-links a {
  border: 1px solid #d9e1ea;
  border-radius: 4px;
  background-color: #ffffff;
  color: var(--taiji-text);
  font-size: 0.95rem;
  padding: 0.45rem 0.7rem;
  text-decoration: none;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.skill-directory-links a:hover,
.skill-directory-links a:focus-visible {
  background-color: #fff7ed;
  border-color: var(--taiji-gold);
  color: var(--taiji-accent);
  transform: translateY(-1px);
  outline: none;
}

.cxw-history-content p,
.cxw-history-content > :not(nav):not(h1) {
  max-width: 100%;
}

.cxw-photo-content table {
  width: 100%;
  margin-bottom: 1.5rem;
}

.cxw-photo-content img {
  display: inline-block;
  width: auto;
  max-width: 100%;
  height: auto;
  margin: 0.35rem;
  vertical-align: middle;
  border-radius: 4px;
}

.health-article-arrow {
  color: var(--taiji-gold);
  justify-self: end;
}

/* Health article reading pages */
.health-reading-article {
  padding: clamp(1.5rem, 4vw, 3.5rem);
}

.health-article-breadcrumb {
  margin-bottom: 2.25rem;
}

.health-article-breadcrumb a {
  color: var(--taiji-text-muted);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.health-article-breadcrumb a:hover,
.health-article-breadcrumb a:focus-visible {
  color: var(--taiji-accent);
}

.health-article-breadcrumb .fa-arrow-left {
  margin-right: 0.45rem;
}

.health-reading-header,
.health-reading-body {
  max-width: 48rem;
  margin-right: auto;
  margin-left: auto;
}

.health-reading-category {
  color: var(--taiji-accent);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.health-reading-category .fa-heart-pulse {
  margin-right: 0.45rem;
}

.health-reading-header h1 {
  color: var(--taiji-primary-dark);
  font-size: clamp(1.75rem, 3vw, 2.55rem);
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 1rem;
}

.health-reading-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  color: var(--taiji-text-muted);
  font-size: 0.9rem;
}

.health-reading-meta i {
  color: var(--taiji-gold);
  margin-right: 0.4rem;
}

.health-reading-lead {
  border-left: 4px solid var(--taiji-accent);
  color: #475569;
  font-size: 1.15rem;
  line-height: 1.9;
  margin: 1.75rem 0 2.25rem;
  padding-left: 1.25rem;
}

.health-reading-figure {
  margin: 0 auto 2.5rem;
  max-width: 54rem;
}

.health-reading-figure img {
  display: block;
  width: 100%;
  max-height: 32rem;
  object-fit: contain;
}

.health-reading-body {
  font-size: 1.08rem;
  line-height: 2;
}

.health-reading-body::after {
  content: "";
  display: table;
  clear: both;
}

.health-reading-body p {
  margin-bottom: 1.5rem;
}

.health-reading-body h2 {
  border-bottom: 1px solid #e2e8f0;
  color: var(--taiji-primary);
  font-size: 1.35rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.55rem;
}

.health-reading-body a {
  color: var(--taiji-accent);
  font-weight: 700;
}

.health-legacy-body {
  overflow-wrap: anywhere;
}

.health-legacy-body img {
  height: auto;
  max-width: 100% !important;
}

.health-legacy-body iframe {
  border: 0;
  display: block;
  max-width: 100%;
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  margin: 1.5rem 0;
}

.health-legacy-body table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
}

.health-reading-note {
  align-items: flex-start;
  background-color: #fff7ed;
  border-left: 4px solid var(--taiji-gold);
  display: flex;
  gap: 0.75rem;
  margin-top: 2rem;
  padding: 1rem 1.25rem;
}

.health-reading-note .fa-circle-info {
  color: var(--taiji-gold);
  margin-top: 0.45rem;
}

.health-reading-note p {
  margin: 0;
}

.health-reading-footer {
  border-top: 1px solid #e2e8f0;
  display: flex;
  gap: 0.75rem;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
}

/* Skill article reading pages */
.skill-reading-article {
  max-width: 58rem;
  margin-right: auto;
  margin-left: auto;
  color: var(--taiji-text);
  font-size: 1.05rem;
  line-height: 2;
  overflow-wrap: anywhere;
}

.skill-reading-article > .cxw-article-actions:first-child {
  margin-bottom: 2rem !important;
}

.skill-reading-article .taiji-article-title {
  color: var(--taiji-primary-dark);
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.5;
  margin-top: 2.25rem;
}

.skill-reading-article .taiji-article-title:first-of-type {
  margin-top: 0;
}

.skill-reading-article img {
  width: auto;
  max-width: min(100%, 22rem);
  height: auto !important;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.1);
}

.skill-reading-article img[align="left"] {
  float: left;
  margin: 0.4rem 1.25rem 0.85rem 0;
}

.skill-reading-article img[align="right"] {
  float: right;
  margin: 0.4rem 0 0.85rem 1.25rem;
}

.skill-reading-article .cxw-article-actions:last-child {
  clear: both;
  display: flex;
  justify-content: space-between;
  padding-top: 1.5rem;
}

.skill-reading-article .cxw-article-actions .btn {
  font-weight: 700;
}

/* History reading pages desktop width limit */
.history-reading-card,
.history-reading-article {
  max-width: 62rem;
  margin-left: auto;
  margin-right: auto;
}

/* Legacy power article reading pages */
.power-reading-page > .row {
  justify-content: center;
}

.power-reading-page {
  background-color: var(--taiji-bg);
}

body:has(.power-reading-page) {
  background-color: var(--taiji-bg) !important;
  background-image: none !important;
}

.power-reading-page .taiji-main-card {
  max-width: 62rem;
  margin-right: auto;
  margin-left: auto;
  padding: clamp(1.5rem, 4vw, 3.5rem);
}

.power-reading-article .health-reading-body {
  width: 100%;
  max-width: 48rem;
  margin-right: auto;
  margin-left: auto;
}

.power-legacy-body {
  color: var(--taiji-text);
  font-size: 1.05rem;
  line-height: 2;
  overflow: visible;
  overflow-wrap: anywhere;
}

.power-legacy-body center,
.power-legacy-body table {
  display: block;
  max-width: 100%;
  text-align: left;
}

.power-legacy-body table {
  width: 100% !important;
}

.power-legacy-body > table {
  background-color: transparent;
}

.power-legacy-body td {
  display: block;
  width: 100% !important;
}

.power-legacy-body img {
  height: auto !important;
  max-width: min(100%, 22rem);
}

.power-reading-breadcrumb {
  color: var(--taiji-text-muted) !important;
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.power-reading-breadcrumb:hover,
.power-reading-breadcrumb:focus-visible {
  color: var(--taiji-accent) !important;
}

.power-reading-title {
  color: var(--taiji-primary-dark);
  display: block;
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.5;
  margin: 2rem 0 1.25rem;
}

.power-reading-footer {
  border-top: 1px solid #e2e8f0;
  display: flex;
  gap: 0.75rem;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
}

/* Content Images & Media */
.taiji-content-img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  margin: 1rem 0;
}

.taiji-caption {
  font-size: 0.92rem;
  color: var(--taiji-text-muted);
  margin-top: 0.3rem;
}

/* Legacy Table RWD Wrap */
.table-responsive-legacy {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 1.5rem;
}

.table-responsive-legacy table {
  max-width: 100% !important;
  width: 100% !important;
}

/* Footer */
.taiji-footer {
  background-color: var(--taiji-primary-dark);
  color: #94a3b8;
  padding: 2.5rem 0 1.5rem 0;
  border-top: 3px solid var(--taiji-accent);
  margin-top: 3rem;
  font-size: 0.95rem;
}

.taiji-footer a {
  color: #cbd5e1;
  text-decoration: none;
}

.taiji-footer a:hover {
  color: #fbbf24;
  text-decoration: underline;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .taiji-main-card {
    padding: 1.25rem;
  }
  
  .taiji-logo-img {
    max-height: 60px;
  }

  .health-directory-intro {
    align-items: flex-start;
    gap: 1rem;
  }

  .health-directory-image {
    width: 6rem;
    min-width: 6rem;
    height: 5rem;
  }

  .health-article-item {
    grid-template-columns: 1fr 1.25rem;
    gap: 0.25rem 0.75rem;
  }

  .health-article-date {
    grid-column: 1;
    grid-row: 1;
  }

  .health-article-title {
    grid-column: 1;
    grid-row: 2;
  }

  .cxw-news-article {
    font-size: 1rem;
    line-height: 1.8;
  }

  .cxw-news-article img {
    display: block;
    float: none !important;
    width: auto;
    max-width: 100%;
    margin: 0 auto 1rem;
  }

  .cxw-photo-content table,
  .cxw-photo-content tbody,
  .cxw-photo-content tr,
  .cxw-photo-content td {
    display: block;
    width: 100% !important;
  }

  .health-article-arrow {
    grid-column: 2;
    grid-row: 1 / span 2;
  }

  .skill-directory-section {
    padding: 1rem 0.25rem;
  }

  .skill-directory-links {
    gap: 0.5rem;
  }

  .skill-reading-article {
    font-size: 1rem;
    line-height: 1.9;
  }

  .skill-reading-article img[align="left"],
  .skill-reading-article img[align="right"] {
    display: block;
    float: none;
    margin: 1rem auto;
  }

  .power-legacy-body {
    font-size: 1rem;
    line-height: 1.9;
  }

  .power-legacy-body img[align="left"],
  .power-legacy-body img[align="right"] {
    display: block;
    float: none;
    margin: 1rem auto;
  }

  .health-reading-footer {
    align-items: stretch;
  }
}

/* Content Images Styling & Spacing */
.taiji-content-img {
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  max-width: 100%;
  height: auto;
}

.taiji-content-img:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.taiji-content-img[align="left"],
.taiji-content-img.float-start {
  float: left;
  margin-right: 1.75rem;
  margin-bottom: 1.25rem;
  margin-top: 0.5rem;
}

.taiji-content-img[align="right"],
.taiji-content-img.float-end {
  float: right;
  margin-left: 1.75rem;
  margin-bottom: 1.25rem;
  margin-top: 0.5rem;
}

.index-profile-flow::after {
  clear: both;
  content: "";
  display: table;
}

.index-profile-flow .taiji-content-img {
  width: min(45%, 22rem);
}

.index-profile-flow p {
  margin-bottom: 1rem;
}

@media (max-width: 576px) {
  .taiji-content-img[align="left"],
  .taiji-content-img[align="right"],
  .taiji-content-img.float-start,
  .taiji-content-img.float-end {
    float: none !important;
    display: block;
    margin: 1rem auto !important;
    max-width: 100%;
  }

  .index-profile-flow .taiji-content-img {
    width: 100%;
  }
}

/* ==========================================================================
   Course Introduction (Introduce) SPA & Form Grid System
   ========================================================================== */

/* Nav Pills Sub-Navigation */
.introduce-nav-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid #e2e8f0;
}

.introduce-nav-pills .nav-link {
  color: #475569;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  background-color: #f1f5f9;
  border: 1px solid #e2e8f0;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.introduce-nav-pills .nav-link:hover {
  color: var(--taiji-accent);
  background-color: #fef2f2;
  border-color: #fca5a5;
  transform: translateY(-1px);
}

.introduce-nav-pills .nav-link.active {
  color: #ffffff !important;
  background-color: var(--taiji-accent) !important;
  border-color: var(--taiji-accent) !important;
  box-shadow: 0 2px 6px rgba(153, 27, 27, 0.25);
}

.introduce-nav-pills .badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2em 0.5em;
  border-radius: 10px;
}

/* Form Spectrum / Movement Breakdown Grid (拳譜及拳架解析) */
.taiji-form-section {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 1.5rem;
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.taiji-form-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px dashed #e2e8f0;
  padding-bottom: 0.75rem;
  margin-bottom: 1.25rem;
}

.taiji-form-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--taiji-primary);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.taiji-form-col {
  background-color: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 0.75rem;
  height: 100%;
}

.taiji-form-col-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--taiji-accent);
  padding-bottom: 0.5rem;
  margin-bottom: 0.6rem;
  border-bottom: 1.5px solid #fecaca;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  letter-spacing: 0.5px;
}

.taiji-form-list {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.taiji-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 0.75rem;
}

.taiji-form-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 0.75rem;
  background-color: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  color: #334155;
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s ease;
}

.taiji-form-item:hover {
  background-color: #ffffff;
  border-color: var(--taiji-accent);
  color: var(--taiji-accent);
  box-shadow: 0 3px 8px rgba(153, 27, 27, 0.12);
  transform: translateX(2px);
}

.taiji-form-item .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  background-color: #e2e8f0;
  color: #475569;
  font-size: 0.78rem;
  font-weight: 700;
  transition: all 0.2s ease;
}

.taiji-form-item:hover .step-num {
  background-color: var(--taiji-accent);
  color: #ffffff;
}

.taiji-form-item.has-detail {
  border-left: 3px solid var(--taiji-accent);
  background-color: #fff5f5;
}

.taiji-form-item.has-detail .step-num {
  background-color: var(--taiji-accent);
  color: #ffffff;
}

/* Video Wrapper Card */
.taiji-video-card {
  background-color: #0f172a;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  margin-bottom: 1.5rem;
}

.taiji-video-header {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.taiji-video-ratio {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 Aspect Ratio */
}

.taiji-video-ratio iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Recommendation Box (推薦研讀) */
.taiji-recommend-box {
  background: linear-gradient(135deg, #fffbee 0%, #fef3c7 100%);
  border: 1px solid #fde68a;
  border-left: 4px solid var(--taiji-gold);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin-top: 1.75rem;
  margin-bottom: 1rem;
}

.taiji-recommend-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #92400e;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.taiji-recommend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.taiji-recommend-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: #ffffff;
  color: #78350f;
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid #fde68a;
  text-decoration: none;
  transition: all 0.2s ease;
}

.taiji-recommend-links a:hover {
  background-color: var(--taiji-accent);
  color: #ffffff;
  border-color: var(--taiji-accent);
  box-shadow: 0 2px 6px rgba(153, 27, 27, 0.2);
  transform: translateY(-1px);
}

@media (max-width: 576px) {
  .taiji-form-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }
  .taiji-form-item {
    font-size: 0.85rem;
    padding: 0.45rem 0.6rem;
  }
  .introduce-nav-pills .nav-link {
    font-size: 0.85rem;
    padding: 0.35rem 0.7rem;
  }
}

/* Image Lightbox Popup Modal */
.taiji-lightbox-modal .modal-dialog {
  max-width: 95vw;
}

.taiji-lightbox-modal .modal-content {
  background: transparent;
  border: none;
}

.taiji-lightbox-btn-close {
  background-color: rgba(15, 23, 42, 0.85);
  color: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

.taiji-lightbox-btn-close:hover {
  background-color: var(--taiji-accent);
  border-color: #ffffff;
  transform: scale(1.1);
  color: #ffffff;
}

.taiji-lightbox-img {
  max-height: 82vh;
  max-width: 95vw;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.6);
  border: 3px solid rgba(255, 255, 255, 0.2);
  transition: transform 0.2s ease;
  user-select: none;
  -webkit-user-drag: none;
  touch-action: pan-y;
}

.taiji-lightbox-caption {
  color: #f8fafc;
  background-color: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0.5rem 1.25rem;
  border-radius: 20px;
  margin-top: 1rem;
  display: inline-block;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.taiji-viewport-nav-btn {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1080;
  background-color: rgba(15, 23, 42, 0.35);
  color: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(3px);
  transition: all 0.2s ease-in-out;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.taiji-viewport-prev {
  left: 16px;
}

.taiji-viewport-next {
  right: 16px;
}

.taiji-viewport-nav-btn:hover, .taiji-viewport-nav-btn:active {
  background-color: var(--taiji-accent);
  border-color: #ffffff;
  color: #ffffff;
  transform: translateY(-50%) scale(1.12);
  opacity: 1;
}


@media (max-width: 576px) {
  .taiji-viewport-nav-btn {
    width: 48px;
    height: 48px;
  }
  .taiji-viewport-prev {
    left: 8px;
  }
  .taiji-viewport-next {
    right: 8px;
  }
}

/* Photo Gallery Thumbnails */
.taiji-photo-thumb-link {
  display: block;
  overflow: hidden;
  border-radius: 0.375rem;
  border: 1px solid #e2e8f0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  height: 100%;
  background-color: #f8fafc;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.taiji-photo-thumb-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.taiji-photo-thumb-img {
  width: 100%;
  height: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.3s ease;
}

.taiji-photo-thumb-link:hover .taiji-photo-thumb-img {
  transform: scale(1.04);
}

/* Class Brochure & Schedule UX Enhancements */
.taiji-brochure-card {
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
  border-radius: 0.5rem;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  border: 1px solid #e2e8f0;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.taiji-brochure-card:hover {
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
}

.taiji-brochure-card-wide {
  max-width: 980px;
}

.taiji-brochure-img {
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

button.navbar-brand {
  cursor: pointer;
}