/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #111;
  background: linear-gradient(180deg, #f7fbff 0%, #f5f5ff 40%, #fff7ed 100%);
}
/* Decorative site background layers */
body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -2;
}

/* Gradient blobs layer */
body::before {
  background:
    radial-gradient(620px 420px at 10% 15%, rgba(102,184,255,0.18), transparent 60%),
    radial-gradient(540px 380px at 90% 20%, rgba(255,144,17,0.15), transparent 62%),
    radial-gradient(520px 420px at 80% 80%, rgba(156, 253, 207, 0.15), transparent 60%),
    radial-gradient(520px 420px at 50% 12%, rgba(255, 128, 171, 0.13), transparent 62%),
    radial-gradient(520px 420px at 50% 88%, rgba(181, 129, 255, 0.13), transparent 62%);
  animation: bgFloat 28s ease-in-out infinite alternate;
  filter: saturate(112%);
}

/* Subtle grid/dots overlay */
body::after {
  z-index: -1;
  background-image:
    linear-gradient(rgba(17,17,17,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17,17,17,0.025) 1px, transparent 1px);
  background-size: 40px 40px, 40px 40px;
  background-position: 0 0, 0 0;
  mask-image: radial-gradient(1200px 1200px at 50% 40%, rgba(0,0,0,0.75), transparent 73%);
  animation: gridHue 40s linear infinite;
}

@keyframes bgFloat {
  0% { transform: translate3d(0, 0, 0) scale(1); filter: hue-rotate(0deg); }
  50% { transform: translate3d(0, -10px, 0) scale(1.01); }
  100% { transform: translate3d(0, 0, 0) scale(1.005); filter: hue-rotate(6deg); }
}

@keyframes gridHue {
  0% { filter: hue-rotate(0deg); }
  100% { filter: hue-rotate(8deg); }
}

@media (prefers-reduced-motion: reduce) {
  body::before { animation: none; }
}
body.spotlight::after {
  content: "";
  position: fixed;   /* 固定在螢幕，不隨滾動 */
  width: 35px;
  height: 35px;
  border: 2px solid rgba(9, 9, 9, 0.2);
  border-radius: 50%;
  pointer-events: none;  /* 🔹 讓它不阻擋滑鼠、捲動 */
  transform: translate(-50%, -50%);
  top: var(--y, -9999px);
  left: var(--x, -9999px);
  opacity: 0;
  transition: opacity 0.2s ease;
  box-shadow: 
  0 0 30px 10px rgba(44, 43, 41, 0.194),
  0 0 60px 20px #d1d6e04d;
  z-index: 9999; /* 確保在最上層可見 */
}

body.spotlight.active::after {
  opacity: 1;
}


/*左側icon*/
.contact-sidebar {
  padding: 11px;
  position: fixed;
  top: 50%;
  left: 25px;                   /* 距離左邊 20px */
  transform: translateY(-50%);  /* 垂直置中 */
  display: flex;
  flex-direction: column;
  gap: 20px;                    /* icon 間距 */
  z-index: 999;
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-radius: 40px;
  transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease, -webkit-backdrop-filter 0.3s ease;
}

.contact-sidebar a {
  color: #333;                  /* 預設 icon 顏色 */
  font-size: 1.5rem;            /* icon 大小（Lucide 會自動繪製） */
  transition: color 0.3s, transform 0.3s;
}

.contact-sidebar a:hover {
  color: #2baaff;               /* 滑過時變色 */
  transform: scale(1.2);        /* 微放大 */
}

/* 滾動後更清晰的玻璃效果 */
.contact-sidebar.scrolled {
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 10px 28px rgba(0,0,0,0.14);
  border: 1px solid rgba(17, 17, 17, 0.08);
}



/*header for name and language switch*/
.site-header {
  position: fixed;
  padding: 80px 0 0 100px;
  text-align: left;
  z-index: 1001;              /* Keep header above content */
}

.logo h1 {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 1.2rem;
  font-weight: 500;
  margin: 0;
  margin-left: 100px;
  transition: transform 1s ease, opacity 0.1s ease;
  font-display: swap;
}

/* Force Chiron GoRound TC for Chinese logo name */
.logo h1.name-en {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif !important;
  font-weight: 600 !important;
}

.logo p {
  font-family: 'Montserrat';
  font-size: 1rem;
  color: #000000;
  font-weight: 500;
  margin-top: 3px;
  margin-left: 100px;
  transition: transform 1s ease, opacity 0.1s ease;
}


.logo img {
  position: absolute;
  top: 8px;
  left: 95px;
  width: 45px;
  height: auto;
  opacity: 0;
  transition: transform 3s ease, opacity 0.1s ease;
}


.lang-switch {
  position: fixed;
  top: 80px;
  right: 200px;
  font-size: 1rem;
  transition: transform 0.8 ease;
  z-index: 1002;              /* Keep language switch on top */
}

/* Header responsive design */
@media (max-width: 768px) {
  /* Move logo text to left */
  .logo h1 {
    margin-top: -30px;
    margin-left: 40px;
    font-size: 1.1rem;
  }

  .logo p {
    margin-left: 40px;
    font-size: 0.9rem;
  }
  /* Move language switch to left and down */
  .lang-switch {
    right: 40px;
    top: 80px;
  }
  
  /* Adjust site header positioning */
  .site-header {
    padding: 100px 0 0 0;
  }
}
/* Header responsive design end*/

.lang-switch a {
  text-decoration: none;
  background: none;
  border: none;
  color: #000000;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  padding: 5px;
  transition: color 0.3s;
}

.lang-switch a:hover {
  color: #66b8ff; 
  transform: scale(1.1);
}


/* Hero 專屬字體 */


.tagline {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  margin: 0;
  padding: 0;
  white-space: pre-wrap;
  text-align: left;
  white-space: pre-wrap;
  margin-top: 200px;
  margin-left: 20px;
  min-height: 320px;
  
}

#tagline-en {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 5rem;   
  font-weight: 600;
  color: #111;
  line-height: 1.7;
  min-height: 320px; 
}

.tagline::after {
  content: "|";
  font-size: 4rem;
  font-weight: 1;
  position: relative;
  top: -10px; /* 負值往上，正值往下 */
  margin-left: 4px;
  color: #111;
  animation: blink 1.8s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  50.1%, 100% { opacity: 0; }
}


@media (max-width: 768px) {
  .hero .tagline {
    font-size: 2.8rem;
  }
  
  #tagline-en {
    font-size: 2.8rem;
    margin-top: 150px;
    min-height: 240px;
    margin-left: 10px;
  }
  
  .tagline::after {
    font-size: 2.4rem;
  }
}

@media (max-width: 480px) {
  .hero .tagline {
    font-size: 2.2rem;
  }
  
  #tagline-en {
    font-size: 2.2rem;
    margin-top: 100px;
    min-height: 200px;
    margin-left: 5px;
  }
  
  .tagline::after {
    font-size: 1.8rem;
  }
}

@media (max-width: 360px) {
  .hero .tagline {
    font-size: 1.8rem;
  }
  
  #tagline-en {
    font-size: 1.8rem;
    margin-top: 80px;
    min-height: 180px;
    margin-left: 0px;
  }
  
  .tagline::after {
    font-size: 1.5rem;
  }
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

.hero-left {
  display: flex;
  align-items: center;
}
.hero-right {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image {
  width: 110%;
  max-width: 500px;
  height: auto;
  border-radius: 0;    /* 拿掉圓角 */
  box-shadow: none;    /* 拿掉陰影 */
  margin-top: 150px;
}



/*Sections */
section {
  padding: 80px 20px;
  max-width: 1000px;
  margin: auto;
}


/* case study section*/
.case-studies-section {
  padding: 80px 0 0 0;
  max-width: 900px;
  margin: 0 auto;
}

.case-studies-title {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 1.8rem;
  color: #111;
  margin-bottom: 50px;
  /*margin-left: 155px;*/
  text-align: left;
}

.case-studies {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 40px;
  padding: 0;
  max-width: 1000px;
  justify-content: center;
  margin-left: -180;
  font-family: 'Montserrat', Helvetica, Arial, 'Chiron GoRound TC', sans-serif;
  position: relative;
  z-index: 0;                 /* Ensure behind header/lang */
}

.case {
  grid-column: span 4;
  background: radial-gradient(120% 120% at 0% 0%, #ffffff 0%, #f8fafc 70%, #f3f4f6 100%);
  border-radius: 12px;
  position: relative;
  overflow: hidden;
  padding: 0;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  z-index: 0;                 /* Keep cards behind fixed UI */
  aspect-ratio: 1;            /* Make cards square */
}

.case-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1;            /* Make media square */
}

.case-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 0.6s ease;
}

/* ===== Book Card Styles ===== */
.book-card { perspective: 1000px; }

.book-scene { position: relative; }

.book {
  position: relative;
  transform-style: preserve-3d;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
  /*background: #fff;*/
  background: transparent;
  height: 100%;
  aspect-ratio: 1;            /* Make book square */
}

.book-cover,
.book-page { height: 100%; }

.book-cover {
  position: absolute;
  inset: 0;
  transform-origin: left center;
  transform: rotateY(0deg);
  transition: transform 0.7s ease;
  z-index: 2;
  backface-visibility: hidden;
}

.book-cover img { display: block; width: 100%; height: 100%; object-fit: cover; }

.cover-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  padding: 16px;
  background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,0.45) 100%);
  color: #fff;
}

.cover-kicker {
  font-size: 0.8rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  opacity: 0.9;
}

.cover-title {
  margin-top: 6px;
  font-size: 1.3rem;
  line-height: 1.2;
}

.book-page {
  position: relative;
  background: radial-gradient(120% 120% at 0% 0%, #ffffff 0%, #f8fafc 70%, #f3f4f6 100%);
  padding: 60px;
  z-index: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
  box-sizing: border-box;
  transition: all 0.4s ease;
}

/* Gentle gradient decoration when book opens */
.book-card:hover .book-page {
  background: linear-gradient(180deg, #fefefe 0%, #f8f9fa 50%, #f1f3f4 100%);  
  /*background: linear-gradient(180deg, #fff4d2 0%, #fff4d2 50%, #fff4d2 100%);*/
  box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.05);
}

@media (max-width: 640px) {
  .book { min-height: 360; }
}

.book-card:hover .book-cover { 
  transform: rotateY(-140deg);
}

/* Gentle glow effect when book opens */
.book-card:hover .book {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

/* subtle spine shadow when opening */
.book-card:hover .book::after {
  content: "";
  position: absolute;
  top: 0; left: 0; bottom: 0; width: 18px;
  background: linear-gradient(90deg, rgba(0,0,0,0.08), transparent 60%);
  pointer-events: none;
}

.badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(17, 17, 17, 0.8);
  color: #fff;
  font-size: 0.75rem;
  padding: 6px 10px;
  border-radius: 999px;
  letter-spacing: 0.4px;
}

.case-content {
  padding: 16px 16px 18px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  overflow: auto;
  height: 100%;
  box-sizing: border-box;
  padding-bottom: 30px;
}

.case h3 {
  font-size: 1.22rem;
  margin-bottom: 6px;
  word-break: break-word;
}

.case p {
  color: #333;
  line-height: 2;
  font-size: 1.06rem;
  word-break: break-word;
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 10px 0 14px;
  list-style: none;
  justify-content: center;
}

.case-tags li {
  font-size: 0.8rem;
  color: #444;
  border: 1px solid #e5e7eb;
  padding: 4px 8px;
  border-radius: 999px;
}

/* Slightly larger CTA only within case studies */
.case .btn { font-size: 0.95rem; }
.book-page .btn { margin-top: auto; align-self: center; }

/* Slim scrollbar for overflowing content */
.case-content::-webkit-scrollbar { width: 6px; }
.case-content::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.15); border-radius: 6px; }
.case-content { scrollbar-width: thin; scrollbar-color: rgba(0,0,0,0.15) transparent; }



.btn {
  display: flex;
  padding: 18px 17px;
  border-radius: 8px;
  background: #111;
  color: #fff;
  text-decoration: none;
  transition: background 0.3s;
  text-align: center;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.btn:hover {
  background: #333;
  transform: scale(1.05);
}

.cta {
  position: relative;
  overflow: hidden;
}

.cta .arrow {
  display: inline-block;
  transform: translateX(0);
  transition: transform 0.3s ease;
}

.cta:hover .arrow {
  transform: translateX(4px);
}

/* Hover 效果 */
.case:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.12);
}

.case:hover .case-media img {
  transform: scale(1.06);
}

/* Responsive breakpoints */
/*@media (max-width: 1200px) {
  .case { grid-column: span 6; }
}*/

@media (max-width: 768px) {
  .case { grid-column: span 8; }
  .case-studies { max-width: 600px; }
}

@media (max-width: 640px) {
  .case-studies-section {
    padding: 60px 0 0 0;
  }
  
  .case-studies-title {
    font-size: 1.5rem;
    margin-left: 0;
    text-align: center;
  }
  
  .case-studies { 
    gap: 16px; 
    padding: 0 14px 36px; 
    max-width: 100%;
  }
  .case { grid-column: span 8; }
  .case-content { padding: 14px 14px 16px; }
  .case h3 { font-size: 1.12rem; }
  .case p { font-size: 0.98rem; }
  .case-media { aspect-ratio: 1; }
  .badge { font-size: 0.7rem; padding: 5px 9px; }
}



/*About section*/
/* 預設隱藏 */
.about-section {
  opacity: 0;
  transform: translateY(80px) scale(0.95); /* 更遠、更小 */
  transition: opacity 1s ease, transform 1s ease;
}

/* 出現時 */
.about-section.show {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* 外層：左右兩塊 */
.about-container {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr; /* 左右兩半 */
  gap: 70px;
  align-items: stretch;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 0;
}

/* 左邊再切上下 */
.about-left {
  display: flex;
  flex-direction: column;
  gap: 30px;
  padding-left: 20px;
}


/* 自我介紹文字卡片 */
.about-text {
  background: none;     /* 去掉黑色背景 */
  box-shadow: none;     /* 去掉陰影 */
  padding: 0;           /* 文字不需要額外框 */
  margin-top: 70px;     /* 增加上方距離，讓文字往下移 */
  font-family: 'Chiron GoRound TC', 'Montserrat', sans-serif;  /* 使用 Chiron GoRound TC 字體 */
  color: #111;          /* 改用深色文字 */
  padding-right: 1px;
}


.about-text h3 {
  font-size: 1.8rem;
  color: #111;          /* 標題用黑字 */
  margin-bottom: 25px;
  margin-left: 15px;
}

.about-text p {
  color: #333;          /* 文字改深灰 */
  font-size: 1.2rem;
  line-height: 2.1;
  margin-left: 15px;
}




/* 揮手 */
.wave {
  display: inline-block;
  transform-origin: 70% 70%;
}
.about-section:hover .wave {
  animation: wave 1.5s infinite;
}
@keyframes wave {
  0% { transform: rotate(0deg); }
  20% { transform: rotate(20deg); }
  40% { transform: rotate(-10deg); }
  60% { transform: rotate(20deg); }
  80% { transform: rotate(-5deg); }
  100% { transform: rotate(0deg); }
}

/* Lucide Arrow Big Up Icon */
.up-arrow-icon {
  display: inline-block;
  margin-left: -5px;
  margin-top: -1px;
  width: 20px;
  height: 20px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: center;
  color: #000000;
  stroke-width: 2.5px;
  vertical-align: middle;
}

.up-arrow-icon:hover {
  transform: translateY(-3px) scale(1.2);
  color: #333333;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
}

.up-arrow-icon:active {
  transform: translateY(-1px) scale(1.1);
}

/* Continuous gentle bounce animation 
.up-arrow-icon {
  animation: gentleBounce 2.5s ease-in-out infinite;
}

@keyframes gentleBounce {
  0%, 100% { 
    transform: translateY(0px); 
  }
  50% { 
    transform: translateY(-2px); 
  }
}*/

/* Enhanced bounce on hover*/ 
.up-arrow-icon:hover {
  animation: excitedBounce 1s ease-in-out infinite;
}

@keyframes excitedBounce {
  0%, 100% { 
    transform: translateY(-3px) scale(1.2); 
  }
  50% { 
    transform: translateY(-5px) scale(1.2); 
  }
}

/* Add a subtle glow effect */
.up-arrow-icon::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 30px;
  height: 30px;
  background: radial-gradient(circle, rgba(0, 0, 0, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.up-arrow-icon:hover::before {
  opacity: 1;
}

/* Add pulse effect */
.up-arrow-icon {
  position: relative;
}

.up-arrow-icon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 24px;
  height: 24px;
  border: 2px solid rgba(0, 0, 0, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  animation: pulse 2s ease-in-out infinite;
  pointer-events: none;
}

@keyframes pulse {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.8);
  }
  50% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.2);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(1.5);
  }
}


/* RWD：手機上下排列 */
@media (max-width: 768px) {
  .about-container {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 0 20px;
  }
  
  .about-left {
    padding-left: 0;
  }
  
  .about-text h3,
  .about-text p {
    margin-left: 0;
  }
  
  .about-text h3 {
    text-align: center;
  }
  
  .stats-container {
    margin-left: 0;
  }
  
  .profile-img {
    align-items: center;
    /*margin-left: 0;*/
  }
}

/* Interactive Stats */
.stats-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
  margin-top: 10px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 15px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  margin-left: -50px;
}

.stat-item {
  text-align: center;
  padding: 15px;
  transition: all 0.3s ease;
  cursor: pointer;
  border-radius: 10px;
}

.stat-item:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.1);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: #000000;
  margin-bottom: 5px;
  transition: all 0.3s ease;
}

.stat-label {
  font-size: 0.8rem;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.stat-item:hover .stat-number {
  color: #ff9011;
  transform: scale(1.1);
}

/* Enhanced Photo Section */
.about-photo {
  position: relative;
  cursor: pointer;
  overflow: hidden;
  border-radius: 15px;
  transition: all 0.3s ease;
}

.profile-img {
  width: 100%;
  max-width: 400px;
  border-radius: 15px;
  transition: all 0.3s ease;
  cursor: pointer;
  margin-top: -30px;
  margin-left: 20px;
}


.photo-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(100, 255, 218, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.3s ease;
  backdrop-filter: blur(5px);
  border-radius: 15px;
}


.overlay-content {
  text-align: center;
  color: #f3ff9a;
}

.overlay-content h4 {
  margin-bottom: 5px;
  font-size: 1.2rem;
}

.overlay-content p {
  font-size: 0.9rem;
  opacity: 0.8;
}



/* Responsive Design */
@media (max-width: 768px) {
  .stats-container {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  
  
  .about-container {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .about-text h3 {
    font-size: 1.5rem;
  }
  
  .about-text p {
    font-size: 1.1rem;
  }
  .profile-img {
    align-items: center;
  }
}

/* Smooth transitions for all interactive elements */
.about-left,
.about-right {
  transition: opacity 0.8s ease, transform 0.8s ease;
}



/* contact section*/
/* 整體區塊 */
.contact-section {
  max-width: 900px;
  margin: 100px auto;
  padding: 35px 10px;
  background: transparent;
  color: #111;
}

/* Title */
.contact-section h2 {
  font-size: 1.8rem;
  margin-bottom: 25px;
  text-align: left;
}

/* 表單：左右兩欄 */
.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

/* 左邊 Name / Email */
.form-left,
.form-right {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.contact-form label {
  font-size: 1.2rem;
  margin-left: 10px;
  margin-bottom: 8px;
  color: #333;
}

/* 輸入框 */
.contact-form input,
.contact-form textarea {
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 1rem;
  width: 100%;
  transition: border 0.3s ease, box-shadow 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: #66b8ff;
  box-shadow: 0 0 6px rgba(102, 184, 255, 0.3);
  outline: none;
}

/* 送出按鈕 */
.form-actions {
  grid-column: 2;
  display: flex;
  justify-content: flex-end;
  margin-top: 10px;
}

.contact-form button {
  background: #111;
  color: #fff;
  padding: 8px;
  width: 120px;
  text-align: center;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
}

.contact-form button:hover {
  background: #333;
  transform: scale(1.05);
}

/* ===== RESPONSIVE DESIGN FOR CONTACT SECTION ===== */

/* Large tablets and small desktops */
@media (max-width: 1024px) {
  .contact-section {
    max-width: 900px;
    margin: 100px auto;
    padding: 35px 20px;
  }
  
  .contact-section h2 {
    font-size: 1.8rem;
    margin-bottom: 25px;
  }
  
  .contact-form {
    gap: 25px;
  }
  
  .contact-form label {
    font-size: 1.1rem;
  }
}

/* Tablets */
@media (max-width: 768px) {
  .contact-section {
    max-width: 100%;
    margin: 80px auto;
    padding: 30px 20px;
  }
  
  .contact-section h2 {
    font-size: 1.6rem;
    margin-bottom: 20px;
    text-align: center;
  }
  
  .contact-form {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .form-actions {
    grid-column: 1;
    justify-content: center;
    margin-top: 15px;
  }
  
  .contact-form button {
    width: 140px;
    padding: 10px;
    font-size: 1rem;
  }
  
  .contact-form label {
    font-size: 1rem;
    margin-left: 5px;
  }
  
  .contact-form input,
  .contact-form textarea {
    padding: 14px;
    font-size: 1rem;
  }
}

/* Mobile landscape */
@media (max-width: 640px) {
  .contact-section {
    margin: 60px auto;
    padding: 25px 15px;
  }
  
  .contact-section h2 {
    font-size: 1.4rem;
    margin-bottom: 18px;
  }
  
  .contact-form {
    gap: 18px;
  }
  
  .contact-form label {
    font-size: 0.95rem;
    margin-left: 0;
  }
  
  .contact-form input,
  .contact-form textarea {
    padding: 12px;
    font-size: 0.95rem;
  }
  
  .contact-form button {
    width: 120px;
    padding: 12px;
    font-size: 0.95rem;
  }
}

/* Mobile portrait */
@media (max-width: 480px) {
  .contact-section {
    margin: 50px auto;
    padding: 20px 12px;
  }
  
  .contact-section h2 {
    font-size: 1.3rem;
    margin-bottom: 15px;
  }
  
  .contact-form {
    gap: 15px;
  }
  
  .contact-form label {
    font-size: 0.9rem;
  }
  
  .contact-form input,
  .contact-form textarea {
    padding: 10px;
    font-size: 0.9rem;
  }
  
  .contact-form button {
    width: 100px;
    padding: 10px;
    font-size: 0.9rem;
  }
}


/*footer section*/
footer {
  position: relative;
  background: #111;
  color: #eee;
  padding: 30px 40px;
  text-align: left;
  transform-origin: bottom center;   /* 從底部翻開 */
  transform: rotateX(90deg);         /* 初始收起來 */
  transition: transform 1s ease;     /* 翻開動畫 */
}

footer.show {
  transform: rotateX(0deg);          /* 翻開 */
}

.footer-content {
  max-width: 1200 px;
  margin: auto;
  display: flex;                     /* 加這個 */
  justify-content: space-between;    /* 左右對齊 */
  align-items: center;               /* 垂直置中 */
}



.social-icon {
  display: flex;               
  margin:0;
  gap: 24px;
  align-items: center;
}

.social-icon svg {
  stroke-width: 1.2; 
}
.social-icon a {
  color: #fff;             /* 統一 icon 顏色 */
  text-decoration: none;      /* 移除底線 */
  display: inline-flex;
  transition: color 0.3s, transform 0.2s;
}


.social-icon a:hover {
  color: #2baaff;                /* hover 顯示白色 */
  transform: scale(1.2);
}

.copy {
  text-align: left;
  font-size: 0.8rem !important;
  color: #aaa;
  margin: 0;                     /* 🔹去掉多餘 margin */
}


/* ===== ENHANCED INTERACTIVE ABOUT SECTION ===== */