:root {
  --tx-blue: #5492D5;
  --tx-blue-dark: #3a75b3;
  --tx-yellow: #FBE675;
  --tx-yellow-light: #fcf1ad;
  --tx-ivory: #EEF0D8;
  --tx-dark: #2C3338;
  --tx-gradient-blue: linear-gradient(135deg, #5492D5 0%, #3a75b3 100%);
  --tx-gradient-yellow: linear-gradient(135deg, #FBE675 0%, #fcf1ad 100%);
}

html,
body {
  font-family: 'Noto Sans TC', system-ui, -apple-system, sans-serif;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  padding-top: 0;
}

/* 動畫 Keyframes - 活潑動感 */
@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
  100% { transform: translateY(0px); }
}

@keyframes float-rotate {
  0% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-15px) rotate(4deg); }
  100% { transform: translateY(0px) rotate(0deg); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

/* Utilities */
.glass-nav {
  background: rgba(84, 146, 213, 0.85) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  padding: 0.5rem 0 !important;
}

.navbar {
  background: transparent;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  padding: 1.5rem 0;
}

/* 首頁還沒滾動前的手機版 Navbar 樣式補充 */
.navbar.navbar-top-mobile-solid {
  background: var(--tx-blue);
}

.navbar .nav-link,
.navbar-brand {
  color: var(--tx-ivory) !important;
  font-weight: 700;
  transition: color 0.3s ease, transform 0.2s ease;
}

.navbar .nav-link:hover {
  color: var(--tx-yellow) !important;
  transform: translateY(-2px);
}

.navbar-toggler {
  border: none;
}

.navbar-toggler:focus {
  box-shadow: none;
}

/* Sections */
section {
  padding: 120px 0;
  overflow: hidden;
  position: relative;
}

.bg-tx-blue {
  background: var(--tx-gradient-blue);
}

.bg-tx-ivory {
  background: var(--tx-ivory);
}

.tx-ivory {
  color: var(--tx-ivory);
}

.tx-dark {
  color: var(--tx-dark);
}

/* Hero */
#home {
  padding-top: 160px;
  padding-bottom: 100px;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-title {
  font-size: clamp(3rem, 7vw, 5rem);
  line-height: 1.1;
  letter-spacing: 2px;
  animation: fadeInUp 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.hero-sub {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  opacity: 0;
  animation: fadeInUp 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275) 0.2s forwards;
}

.hero-logo {
  width: clamp(64px, 10vw, 110px);
  animation: pulse 2.5s infinite ease-in-out;
}

.hero-img-wrapper {
  position: relative;
  z-index: 2;
  display: inline-flex;
  justify-content: center;
  align-items: flex-end;
  padding: 2rem 2rem 0 2rem;
  /* Apply arch background here */
  width: 72%; /* 10% smaller on mobile */
  aspect-ratio: 1 / 1.1;
  background: linear-gradient(135deg, #1168c4 0%, #0959B0 100%);
  border-radius: 500px 500px 0 0;
  box-shadow: inset 0 0 20px rgba(255, 255, 255, 0.15), 0 20px 40px rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-bottom: none;
  overflow: hidden;
}

@media (min-width: 992px) {
  .hero-img-wrapper {
    width: 80%;
  }
}

.hero-mascot-container {
  transform: translateY(25%);
  width: 100%;
}

.hero-mascot-img {
  position: relative;
  animation: float-rotate 4s ease-in-out infinite;
  z-index: 1;
}

.service-card {
  background: var(--tx-gradient-yellow);
  border: none;
  border-radius: 24px;
  padding: 1.25rem 0.75rem !important;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  z-index: 1;
  position: relative;
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 24px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: -1;
}

.service-card:hover {
  transform: translateY(-15px) scale(1.05);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 56px;
  height: 56px;
  object-fit: contain;
  transition: transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.service-card:hover .service-icon {
  transform: rotateY(180deg) scale(1.15) translateY(-10px);
}


.service-card-title {
  color: #46A0A6 !important;
  font-size: 1.15rem;
  font-weight: 400;
}
/* Cases - Fixed Carousel Layout */
.carousel-item-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .service-card { padding: 2rem 1.5rem !important; }
  .service-card-title { font-size: 1.5rem; }
  .service-icon { width: 80px; height: 80px; }
  
  .carousel-item-wrapper {
    flex-direction: row;
  }

  .carousel-item-wrapper>div {
    flex: 1;
  }
}

.case-card {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, .1);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  background: #fff;
}

.case-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 20px 50px rgba(0, 0, 0, .15);
}

.case-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  transition: transform 0.7s ease;
}

.case-card:hover img {
  transform: scale(1.1);
}

.case-caption {
  position: absolute;
  left: 1.5rem;
  bottom: 1.5rem;
  background: rgba(44, 51, 56, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #fff;
  padding: 0.6rem 1.5rem;
  border-radius: 50px;
  font-size: 1.05rem;
  font-weight: 700;
  transform: translateY(0);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.case-card:hover .case-caption {
  background: var(--tx-yellow);
  color: var(--tx-dark);
  transform: translateY(-8px) scale(1.05);
}

/* Carousel Controls */
.custom-carousel-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--tx-gradient-blue);
  color: white;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 5px 15px rgba(84, 146, 213, 0.4);
  cursor: pointer;
  text-decoration: none;
}

.custom-carousel-btn:hover {
  background: var(--tx-dark);
  transform: scale(1.15) rotate(5deg);
  color: var(--tx-yellow);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* Contact & Watermark */
.contact-card {
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .3);
  border-radius: 30px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
  transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
}

.contact-card:hover {
  transform: translateY(-10px) scale(1.02);
}

.watermark {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  opacity: .05;
  pointer-events: none;
}

.watermark img {
  width: 100%;
  max-width: 300px;
  transform: rotate(-15deg) scale(1.2);
}



/* Animation Classes for Scroll Reveal */
.fade-up-element {
  opacity: 0;
  transform: translateY(60px);
  transition: opacity 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275),
    transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.fade-up-element.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Delay utilities for sequential animations */
.delay-100 {
  transition-delay: 100ms;
}

.delay-200 {
  transition-delay: 200ms;
}

.delay-300 {
  transition-delay: 300ms;
}

/* Utilities */
.rounded-24 {
  border-radius: 24px;
}

.shadow-soft {
  box-shadow: 0 15px 45px rgba(0, 0, 0, .08);
}

@media (max-width: 991.98px) {
  .navbar-collapse {
    background: rgba(84, 146, 213, 0.95);
    backdrop-filter: blur(10px);
    padding: 1.5rem;
    border-radius: 16px;
    margin-top: 1rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  }
}