/* 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, 0.10), 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; }
}

/* Header Styles */
.case-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: transparent;
  z-index: 1000;
  padding: 20px 0;
}

.header-container {
  display: flex;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 10px;
}

.header-left .logo-link {
  display: flex;
  align-items: center;
}

.header-logo {
  width: 45px;
  height: 45px;
  margin-top: 20px;
}

.header-right .language-switch {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-btn {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 1rem;
  color: #000000;
  text-decoration: none;
  transition: color 0.3s ease;
}

.lang-btn.active {
  color: #000;
  font-weight: 400;
}

.lang-btn:hover {
  color: #66b8ff;
}

.lang-separator {
  color: #000000;
}

/* Color Master Specific Styles */
.color-master-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 0 0 0;
}

.hero-left h1 {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 3.5rem;
  font-weight: 700;
  color: #111;
  line-height: 1.2;
  margin-bottom: 20px;
  text-align: center;
}

.hero-left p {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 1.5rem;
  color: #333;
  line-height: 1.4;
  text-align: center;
}

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

.hero-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 100%;
}

.hero-img {
  width: 250%;
  height: auto;
  border-radius: 12px;
  background: transparent;
  margin-left: -50px;
  /*box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);*/
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}


.problem-solution-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 40px 10px 40px;
}

.computer-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 40px;
  text-align: left;
}

.computer-container {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.computer-img {
  max-width: 40%;
  height: auto;
  border-radius: 12px;
  background: transparent;
  transition: transform 0.3s ease;
}

.computer-img:hover {
  transform: scale(1.02);
}

.user-flow-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px;
  text-align: left;
  display: none; /* Hidden on desktop, shown on mobile */
}

.user-flow-container {
  max-width: 100%;
  margin: 0;
}

.user-flow-container h2 {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: #111;
  margin-bottom: 30px;
}

.user-flow-list {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 1.1rem;
  color: #333;
  line-height: 1.6;
  margin-bottom: 40px;
  list-style: decimal;
  padding-left: 20px;
}

.user-flow-list li {
  margin-bottom: 15px;
}

.features-section {
  max-width: 1200px;
  margin: 40px auto;
  padding: 40px;
  text-align: left;
}

.features-container {
  max-width: 100%;
  margin: -250px auto;
}

.features-container h2 {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: #111;
  margin-bottom: 30px;
}

/* Solution Images Section */
.solution-images-section {
  max-width: 1200px;
  margin: 0 auto;
  margin-top: -60px;
  padding: 40px;
  text-align: center;
}

.solution-images-container {
  display: flex;
  flex-direction: row;
  gap: 40px;
  align-items: center;
  justify-content: right;
  margin-right: 100px;
}

.key-features-list {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 1.1rem;
  color: #333;
  line-height: 1.6;
  margin-bottom: 40px;
  list-style: disc;
  padding-left: 20px;
}

.key-features-list li {
  margin-bottom: 15px;
}

.key-features-list strong {
  color: #111;
  font-weight: 600;
}

/* Prototyping Video Section */
.prototyping-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px;
  text-align: center;
}

.prototyping-container {
  max-width: 100%;
  margin: 0;
}

.try-tool-button-container {
  text-align: center;
  margin-bottom: 30px;
}

.try-tool-button {
  display: inline-block;
  background: #111;
  color: white;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: background 0.3s ease;
}

.try-tool-button:hover {
  background: #333;
}

.prototyping-video {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}


.palette-img {
  max-width: 130px;
  height: auto;
}

.pen-img {
  max-width: 50px;
  height: auto;
  transform: rotate(20deg);
}

.problem-section h2,
.solution-section h2 {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: #111;
  margin-bottom: 10px;
}

/*adjust the margin-top of the user flow section*/
.problem-section h2:last-of-type {
  margin-top: 40px;
}

.user-flow-image {
  margin-top: 70px;
  text-align: center;
}

.flow-img {
  max-width: 100%;
  height: auto;
}

.problem-section p,
.solution-section p {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 1.1rem;
  color: #333;
  line-height: 1.7;
}

.solution-points {
  margin-top: 30px;
}

.solution-point {
  margin-bottom: 20px;
}

.solution-point h3 {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  color: #111;
  margin-bottom: 15px;
}

.solution-point p {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 1rem;
  color: #333;
  line-height: 1.4;
  margin-bottom: 10px;
}

.solution-point ul {
  font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  font-size: 1rem;
  color: #333;
  line-height: 1.4;
  margin: 5px 0 15px 20px;
}

.solution-point li {
  margin-bottom: 8px;
}

.solution-point strong {
  color: #111;
  font-weight: 600;
}


/* Responsive Design */
@media (max-width: 768px) {
  /* Create a grid layout for mobile reordering */
  body {
    display: grid;
    grid-template-areas: 
      "hero"
      "problem"
      "userflow"
      "features"
      "prototyping";
    grid-template-rows: auto auto auto auto auto;
  }
  
  .color-master-hero {
    grid-area: hero;
    padding: 100px 20px 40px;
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-left h1 {
    font-size: 2.5rem;
    margin-bottom: 16px;
  }
  
  .hero-left p {
    font-size: 1.2rem;
    margin-bottom: 20px;
  }
  
  .hero-img {
    width: 100%;
    max-width: 400px;
    margin-left: 0;
    margin: 0 auto;
  }
  
  .problem-solution-section {
    grid-area: problem;
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 40px 20px;
  }
  
  .solution-images-section {
    display: none; /* Hide solution images section on mobile */
  }
  
  .user-flow-section {
    grid-area: userflow;
    padding: 20px;
    display: block !important;
  }
  
   .features-section {
     grid-area: features;
     padding: 20px;
     margin-top: 250px; /* Reduced space since User Flow section was removed */
     margin-bottom: 150px;
     background: rgba(247, 251, 255, 0.95); /* Semi-transparent background */
     border-radius: 12px;
     backdrop-filter: blur(10px);
     text-align: left; /* Align to left on mobile */
   }
  
  .prototyping-section {
    grid-area: prototyping;
    padding: 20px;
  }
  
  .hero-left h1 {
    font-size: 2.5rem;
  }
  
  .hero-left p {
    font-size: 1.2rem;
  }
  
  .hero-images {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  
  .computer-section {
    padding: 20px;
  }
  
  .user-flow-container h2 {
    font-size: 2rem;
  }
  
  .user-flow-list {
    font-size: 1rem;
  }
  
  .features-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .features-container h2 {
    font-size: 2rem;
  }
  
  .solution-images-container {
    flex-direction: column;
    gap: 30px;
  }
  
  .key-features-list {
    font-size: 1rem;
  }
  
  .prototyping-video {
    margin-top: 20px;
    border-radius: 4px;
  }
  
  /* Hide User Flow content from problem section on mobile*/
  .problem-section h2:last-of-type,
  .problem-section .user-flow-list,
  .problem-section .user-flow-image {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero-left h1 {
    font-size: 2rem;
  }
  
  .hero-left p {
    font-size: 1rem;
  }
  
  .problem-section h2,
  .solution-section h2 {
    font-size: 1.5rem;
  }
  
  .problem-section p,
  .solution-section p {
    font-size: 1rem;
  }
}

/* Footer */
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: 1200px;
  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 */
}

/* Responsive Footer */
@media (max-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    padding: 0 20px;
  }
  
  .social-icon {
    gap: 16px;
  }
  
  .copy {
    font-size: 0.7rem !important;
  }
}