:root{
  --timeline-width:320px;
  --track-left:160px;
    --bg:#f5f6f8;
  }
  *{box-sizing:border-box}
  body{
    margin:0;
    font-family: 'Chiron GoRound TC', 'Montserrat', Helvetica, Arial, sans-serif;
  /*font-family: "Montserrat", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;*/
    background:var(--bg);
    color:#111;
  line-height:1.6;
  position: relative;
}

/*vertical line between left and right column*/
body::before {
  content: '';
  position: fixed;
  left: calc(25% + 50px);
  top: var(--line-top, 100px);
  bottom: 0;
  width: 4px;
  background-color: #EDE5D2;
  pointer-events: none;
  transition: top 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  z-index: -999;
}

/* brief icon on the line */
/*body::after {
  content: '';
  position: fixed;
  left: calc(25% + 50px - 20px);
  top: var(--icon-top, 90px);
  width: 40px;
  height: 40px;
  background-image: url('../images/case-aurum/icons/brieficon.png');
  background-size: 40px 40px;
  background-repeat: no-repeat;
  background-position: center;
  opacity: var(--icon-opacity, 1);
  z-index: 11;
  pointer-events: none;
  transition: top 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), opacity 0.1s ease;
}*/


/* Ideation & Wireframe Icon */
/*.wireframe-icon {
  position: absolute;
  left: calc(25% + 50px - 43px);
  top: 5%;
  transform: translateY(-50%);
  z-index: 12;
}

.wireframe-icon-img {
  width: 55px;
  height: 55px;
}*/

/* Prototyping & Testing Icon */
/*.prototyping-icon {
  position: absolute;
  left: calc(25% + 50px - 43px);
  top: 5%;
  transform: translateY(-50%);
  z-index: 12;
}

.prototyping-icon-img {
  width: 55px;
  height: 55px;
}*/

/* Header */
.case-header { position: fixed; top: 0; left: 0; right: 0;
  background: transparent; backdrop-filter: blur(10px); z-index: 1000;
  padding: 0;
}

.header-container { max-width: 1600px; margin: 0 auto;
  padding: 0 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.header-left {
  flex: 0 0 auto;
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: opacity 0.3s ease;
}

.logo-link:hover {
  opacity: 0.8;
}

.header-logo {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
  margin-top: 25px;
}

.header-center {
  flex: 1;
  text-align: center;
}

.case-title {
  margin: 20px 0 0 0;
  font-size: 20px;
  font-weight: 700;
  color: #111;
  letter-spacing: 0.5px;
}

.header-right {
  flex: 0 0 auto;
}

.language-switch {
  font-family: 'Montserrat', Helvetica, Arial, 'Chiron GoRound TC', sans-serif;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
}

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

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

.lang-btn.active {
  color: #000000;
}

.lang-separator {
  color: #000000;
  font-size: inherit;
}

/* Main Container */
.container {
  /*max-width: 1400px;*/
  max-width: 2000px;
  margin: 130px auto 60px auto;
  padding: 0 30px;
  display: grid;
  grid-template-columns: 1fr 2.8fr;
  gap: 120px;
  align-items: start;
  position: relative;
}

/* Vertical line between brief section columns */
.container::before {
  content: '';
  position: absolute;
  left: calc(25% + 50px); /* Overlay the original vertical line position */
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: transparent;
  z-index: 1;
}

/* Brief icon on top of the line */
.container::after {
  content: '';
  position: absolute;
  left: calc(25% + 50px - 25px); /* Center icon on the line (adjusted for larger size) */
  top: -10px;
  width: 50px;
  height: 50px;
  background-image: url('../images/case-aurum/icons/brieficon.png');
  background-size: 60px 60px;
  background-repeat: no-repeat;
  background-position: center;
  z-index: 2;
  pointer-events: none;
  /*transition: all 0.3s ease;*/
}

/* Fixed state for brief icon (desktop only) */
@media (min-width: 901px) {
  .container.fixed-icon::after {
    position: fixed;
    top: 90px;
    left: calc(25% + 50px - 25px);
  }
}

/* Hidden state for brief icon */
.container.hidden-icon::after {
  opacity: 0;
  visibility: hidden;
}

/* Fixed state for brief title box (desktop only) */
@media (min-width: 901px) {
  .container.fixed-icon .left-column {
    position: fixed;
    top: 90px;
    left: 30px;
    z-index: 10;
  }
}

/* Hidden state for brief title box */
.container.hidden-title .left-column {
  opacity: 0;
  visibility: hidden;
}

/* Keep right column in original position when title box is fixed (desktop only) */
@media (min-width: 901px) {
  .container.fixed-icon .right-column {
    margin-left: 0;
    width: auto;
    grid-column: 2;
  }
}

/* Left Column - Project Brief Box */
.left-column {
  background-color: #ffd2db;
  padding: 30px 25px;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
  width: fit-content;
  height: fit-content;
  max-width: 320px;
  position: relative;
  top: -10px;
}

.left-column h2 {
  font-size: 26px;
  font-weight: 700;
  color: #111;
  margin: 0 0 8px 0;
  letter-spacing: 0.5px;
}

.left-column p {
  font-size: 18px;
  color: #666;
  line-height: 1.5;
  margin: 0;
}

/* Right Column - Main Content */
.right-column {
  margin-right: 30px;
  padding: 0;
}

.right-column h2 {
  font-size: 24px;
  font-weight: 600;
  color: #111;
  margin: 0 0 10px 0;
  letter-spacing: 0.3px;
}

.right-column p {
  font-size: 18px;
  line-height: 1.7;
  color: #333;
  margin: 0 0 20px 0;
}

.right-column p:last-child {
  margin-bottom: 0;
}

/* Mockup Images */
.mockup-images {
  margin-top: 40px;
  display: flex;
  flex-direction: row;
  gap: 20px;
  align-items: flex-start;
}

.mockup-img {
  width: 50%;
  max-width: 400px;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.mockup-img:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.2);
}

/* Responsive Design */

/* Mobile Header Adjustments */
@media (max-width: 768px) {
  .header-container {
    padding: 0 20px;
  }
  
  .header-left {
    margin-left: 0px; /* Move profile icon more to the left */
  }
  
  .header-right {
    margin-right: 0px; /* Move language switch more to the right */
  }
}

@media (max-width: 900px) {
  .container {
    grid-template-columns: 1fr;
    gap: 30px;
    margin: 100px auto 30px auto;
    padding: 0 20px;
  }
  
  .container::before {
    display: none;
  }
  
  .left-column {
    padding: 25px;
    order: 1;
    width: 100%;
    max-width: 100%;
    margin-top: 30px;
  }
  
  .right-column {
    order: 2;
  }
  
  .left-column h2 {
    font-size: 18px;
    margin-bottom: 15px;
  }
  
  .left-column p {
    font-size: 15px;
  }
  
  .right-column h2 {
    font-size: 24px;
    margin-bottom: 20px;
  }
  
  .right-column p {
    font-size: 15px;
  }
  
  .mockup-images {
    margin-top: 30px;
    gap: 15px;
    flex-direction: column;
  }
  
  .mockup-img {
    width: 100%;
    max-width: 100%;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 0 15px;
    margin: 85px auto 30px auto;
  }
  
  .left-column {
    padding: 20px;
  }
  
  .left-column h2 {
    font-size: 16px;
  }
  
  .left-column p {
    font-size: 14px;
  }
  
  .right-column h2 {
    font-size: 20px;
  }
  
  .right-column p {
    font-size: 14px;
  }
  
  .mockup-images {
    margin-top: 25px;
    gap: 12px;
  }
  
  .mockup-img {
    border-radius: 8px;
  }
}

/* My Creative Journey Section */

/*.container-journey::before {
  position: fixed;
  left: calc(25% + 50px - 20px);
  top: var(--icon-top, 90px);
  width: 40px;
  height: 40px;
  background-image: url('../images/case-aurum/icons/creativeicon.png');
  background-size: 40px 40px;
  background-repeat: no-repeat;
  background-position: center;
  opacity: var(--icon-opacity, 1);
  z-index: 11;
  pointer-events: none;
  transition: top 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), opacity 0.1s ease;
  }*/

/*content: '';
position: fixed;
left: calc(25% + 50px - 20px);
top: var(--icon-top, 90px);
width: 40px;
height: 40px;
background-image: url('../images/case-aurum/icons/brieficon.png');
background-size: 40px 40px;
background-repeat: no-repeat;
background-position: center;
opacity: var(--icon-opacity, 1);
z-index: 11;
pointer-events: none;
transition: top 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), opacity 0.1s ease;
}*/



.container-journey {
  max-width: 2000px;
  margin: 60px auto 60px auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 2.8fr;
  gap: 120px;
  align-items: start;
  position: relative;
}

/* Vertical line between creative journey columns */
.container-journey::before {
  content: '';
  position: absolute;
  left: calc(25% + 50px); /* Overlay the original vertical line position */
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: transparent;
  z-index: 1;
}

/* Creative icon on top of the line */
.container-journey::after {
  content: '';
  position: absolute;
  left: calc(25% + 50px - 30px); /* Center icon on the line (adjusted for larger size) */
  top: -10px;
  width: 60px;
  height: 60px;
  background-image: url('../images/case-aurum/icons/creativeicon.png');
  background-size: 60px 60px;
  background-repeat: no-repeat;
  background-position: center;
  z-index: 2;
  pointer-events: none;
}

/* Fixed state for creative icon */
.container-journey.fixed-icon::after {
  position: fixed;
  top: 90px;
  left: calc(25% + 50px - 30px);
}

/* Hidden state for creative icon */
.container-journey.hidden-icon::after {
  opacity: 0;
  visibility: hidden;
}

/* Fixed state for creative journey title box */
.container-journey.fixed-icon .left-column-journey {
  position: fixed;
  top: 90px;
  left: 30px;
  z-index: 10;
}

/* Keep right column in original position when creative journey title box is fixed */
.container-journey.fixed-icon .right-column-journey {
  margin-left: 0;
  width: auto;
  grid-column: 2;
}

/* Hidden state for creative journey title box */
.container-journey.hidden-title .left-column-journey {
  opacity: 0;
  visibility: hidden;
}

/* Fixed state for users title box */
.container-users.fixed-icon .left-column-users {
  position: fixed;
  /*top: 80px;*/
  top: 90px;
  left: 30px;
  z-index: 10;
}

/* Keep right column in original position when users title box is fixed */
.container-users.fixed-icon .right-column-users {
  margin-left: 0;
  width: auto;
  grid-column: 2;
}

/* Hidden state for users title box */
.container-users.hidden-title .left-column-users {
  opacity: 0;
  visibility: hidden;
}

/* Fixed state for problem title box */
.container-problem.fixed-icon .left-column-problem {
  position: fixed;
  top: 90px;
  left: 30px;
  z-index: 10;
}

/* Keep right column in original position when problem title box is fixed */
.container-problem.fixed-icon .right-column-problem {
  margin-left: 0;
  width: auto;
  grid-column: 2;
}

/* Hidden state for problem title box */
.container-problem.hidden-title .left-column-problem {
  opacity: 0;
  visibility: hidden;
}

/* Fixed state for ideation title box */
.container-ideation.fixed-icon .left-column-ideation {
  position: fixed;
  top: 90px;
  left: 30px;
}

/* Keep right column in original position when ideation title box is fixed */
.container-ideation.fixed-icon .right-column-ideation {
  margin-left: 0;
  width: auto;
  grid-column: 2;
}

/* Hidden state for ideation title box */
.container-ideation.hidden-title .left-column-ideation {
  opacity: 0;
  visibility: hidden;
}

/* Fixed state for prototyping title box */
.container-prototyping.fixed-icon .left-column-prototyping {
  position: fixed;
  top: 90px;
  left: 30px;
  z-index: 10;
}

/* Keep right column in original position when prototyping title box is fixed */
.container-prototyping.fixed-icon .right-column-prototyping {
  margin-left: 0;
  width: auto;
  grid-column: 2;
}


.left-column-journey {
  background-color: #D8BFD8;
  padding: 30px 25px;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
  width: fit-content;
  height: fit-content;
  max-width: 320px;
  position: relative;
  left: 10px;
  top: -10px;
  z-index: 12;
}

.left-column-journey h2 {
  font-size: 26px;
  font-weight: 700;
  color: #111;
  margin: 0 0 8px 0;
  letter-spacing: 0.5px;
}

.left-column-journey p {
  font-size: 18px;
  color: #666;
  line-height: 1.5;
  margin: 0;
}

.right-column-journey {
  margin-right: 30px;
  padding: 0;
}

.right-column-journey h2 {
  font-size: 24px;
  font-weight: 600;
  color: #111;
  margin: 0 0 10px 0;
  letter-spacing: 0.3px;
}

.right-column-journey p {
  font-size: 18px;
  line-height: 1.7;
  color: #333;
  margin: 0 0 20px 0;
}

.right-column-journey p:last-child {
  margin-bottom: 0;
}

.right-column-journey ul {
  margin: 20px 0;
  padding-left: 0;
  list-style: none;
}

.right-column-journey li {
  font-size: 18px;
  line-height: 1.7;
  color: #333;
  margin: 0 0 12px 0;
  padding-left: 25px;
  position: relative;
}

.right-column-journey li::before {
  content: '•';
  color: #000000;
  font-weight: bold;
  position: absolute;
  left: 0;
  top: 0;
}

/* Journey Images */
.journey-images {
  margin: 30px 0 35px -30px;
}

.creative-img {
  width: 100%;
  max-width: 900px;
  height: auto;
}

/* Responsive Design for Journey Section */

@media (max-width: 900px) {
  .container-journey {
    grid-template-columns: 1fr;
    gap: 30px;
    margin: 40px auto 30px auto;
    padding: 0 20px;
  }
  
  .container-journey::before {
    display: none;
  }
  
  .left-column-journey {
    padding: 25px;
    order: 1;
    width: 100%;
    max-width: 100%;
  }
  
  .right-column-journey {
    order: 2;
  }
  
  .left-column-journey h2 {
    font-size: 18px;
    margin-bottom: 15px;
  }
  
  .left-column-journey p {
    font-size: 15px;
  }
  
  .right-column-journey h2 {
    font-size: 24px;
    margin-bottom: 20px;
  }
  
  .right-column-journey p {
    font-size: 16px;
  }
}

@media (max-width: 600px) {
  .container-journey {
    padding: 0 15px;
    margin: 30px auto 30px auto;
  }
  
  /*.journey-icon {
    left: calc(25% + 50px - 20px);
  }
  
  .journey-icon.fixed {
    left: calc(25% + 50px - 20px);
  }*/
  
  .left-column-journey {
    padding: 20px;
  }
  
  .left-column-journey h2 {
    font-size: 16px;
  }
  
  .left-column-journey p {
    font-size: 14px;
  }
  
  .right-column-journey h2 {
    font-size: 18px;
  }
  
  .right-column-journey p {
    font-size: 14px;
  }
  
  .right-column-journey li {
    font-size: 14px;
  }
  
  .journey-images {
    margin: 15px 0;
  }
  
}

/* Understanding the Users Section */
.container-users {
  max-width: 2000px;
  margin: 60px auto 60px auto;
  padding: 0 30px;
  display: grid;
  grid-template-columns: 1fr 2.8fr;
  gap: 120px;
  align-items: start;
  position: relative;
}

/* Vertical line between users columns */
.container-users::before {
  content: '';
  position: absolute;
  left: calc(25% + 50px); /* Overlay the original vertical line position */
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: transparent;
  z-index: 1;
}

/* User icon on top of the line */
.container-users::after {
  content: '';
  position: absolute;
  left: calc(25% + 50px - 30px); /* Center icon on the line (adjusted for larger size) */
  top: -10px;
  width: 60px;
  height: 60px;
  background-image: url('../images/case-aurum/icons/usericon.png');
  background-size: 60px 60px;
  background-repeat: no-repeat;
  background-position: center;
  z-index: 2;
  pointer-events: none;
}

/* Fixed state for user icon */
.container-users.fixed-icon::after {
  position: fixed;
  top: 90px;
  left: calc(25% + 50px - 30px);
}

/* Hidden state for user icon */
.container-users.hidden-icon::after {
  opacity: 0;
  visibility: hidden;
}


.left-column-users {
  background-color: #7ec1f4;
  padding: 30px 25px;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
  width: fit-content;
  height: fit-content;
  max-width: 320px;
  position: relative;
  top: -10px;
  z-index: 13;
}

.left-column-users h2 {
  font-size: 26px;
  font-weight: 700;
  color: #111;
  margin: 0 0 8px 0;
  letter-spacing: 0.5px;
}

.left-column-users p {
  font-size: 18px;
  color: #666;
  line-height: 1.5;
  margin: 0;
}

.right-column-users {
  margin-right: 30px;
  padding: 0;
}

.right-column-users h2 {
  font-size: 24px;
  font-weight: 600;
  color: #111;
  margin: 0 0 10px 0;
  letter-spacing: 0.3px;
}

.right-column-users p {
  font-size: 18px;
  line-height: 1.7;
  color: #333;
  margin: 0 0 30px 0;
}

/* Persona Cards */
.persona-cards {
  display: flex;
  gap: 40px;
  margin-top: 20px;
}

.persona-card {
  flex: 1;
  /*background: linear-gradient(135deg, #B0E0E6 0%, #E0FFFF 50%, #F0F8FF 100%);*/
  padding: 25px 25px 5px 25px;
  border-radius: 12px;
  /*border: 2px solid transparent;*/
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* Individual Colorful Persona Card Styles */
.persona-card:nth-child(1) {
  background: linear-gradient(135deg, rgba(243, 202, 255, 0.3), rgba(255, 211, 235, 0.3), rgba(255, 180, 180, 0.3));
  box-shadow: 0 4px 15px rgba(31, 29, 29, 0.3);
}

.persona-card:nth-child(1):hover {
  box-shadow: 0 8px 25px rgba(31, 29, 29, 0.3);
}

.persona-card:nth-child(2) {
  background: linear-gradient(135deg, rgba(152, 212, 255, 0.3), rgba(110, 168, 255, 0.25), rgba(168, 175, 255, 0.3));
  box-shadow: 0 4px 15px rgba(31, 29, 29, 0.3);
}

.persona-card:nth-child(2):hover {
  box-shadow: 0 8px 25px rgba(31, 29, 29, 0.3);
}


.persona-avatar {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  margin: 0 auto 20px auto;
  object-fit: cover;
  display: block;
}

.persona-name {
  font-size: 20px;
  font-weight: 700;
  color: #000;
  margin: 0 0 5px 0;
  text-align: center;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
}

.persona-role {
  font-size: 16px;
  color: #333;
  margin: 0 0 0 0;
  text-align: center;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.3);
}

.persona-section {
  margin-bottom: 20px;
}

.persona-section:last-child {
    margin-bottom: 20px;
  }

.persona-section h4 {
  font-size: 20px;
  font-weight: 600;
  color: #000;
  margin: 0 0 10px 0;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
}

.persona-section ul {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

.persona-section li {
  font-size: 17px;
  line-height: 1.5;
  color: #333;
  margin: 0 0 8px 0;
  padding-left: 15px;
  position: relative;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.3);
}

.persona-section li::before {
  content: '•';
  color: #333;
  position: absolute;
  left: 0;
  top: 0;
}

/* Responsive Design for Users Section */
@media (max-width: 900px) {
  .container-users {
    grid-template-columns: 1fr;
    gap: 30px;
    margin: 40px auto 30px auto;
    padding: 0 20px;
  }
  
  .container-users::before {
    display: none;
  }
  
  .left-column-users {
    padding: 25px;
    order: 1;
    width: 100%;
    max-width: 100%;
  }
  
  .right-column-users {
    order: 2;
  }
  
  .left-column-users h2 {
    font-size: 18px;
    margin-bottom: 15px;
  }
  
  .left-column-users p {
    font-size: 15px;
  }
  
  .right-column-users h2 {
    font-size: 24px;
    margin-bottom: 20px;
  }
  
  .right-column-users p {
    font-size: 16px;
  }
}

@media (max-width: 600px) {
  .container-users {
    padding: 0 15px;
    margin: 30px auto 30px auto;
  }
  
  .left-column-users {
    padding: 20px;
  }
  
  .left-column-users h2 {
    font-size: 16px;
  }
  
  .left-column-users p {
    font-size: 14px;
  }
  
  .right-column-users h2 {
    font-size: 18px;
  }
  
  .right-column-users p {
    font-size: 14px;
  }
  
  .persona-card {
    padding: 20px;
  }
  
  .persona-cards {
    flex-direction: column; /* Stack persona cards vertically on mobile */
    gap: 20px; /* Reduce gap for mobile */
  }
  
  .persona-avatar {
    width: 80px;
    height: 80px;
  }
  
  .persona-name {
    font-size: 18px;
    color: #000;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
  }
  
  .persona-role {
    font-size: 14px;
    color: #333;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.3);
  }
  
  .persona-section h4 {
    font-size: 15px;
    color: #000;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
  }
  
  .persona-section li {
    font-size: 13px;
    color: #333;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.3);
  }
  
  .persona-section li::before {
    color: #333;
  }
}

/* Problem & Solution Section */
.container-problem {
  max-width: 2000px;
  margin: 60px auto 60px auto;
  padding: 0 30px;
  display: grid;
  grid-template-columns: 1fr 2.8fr;
  gap: 120px;
  align-items: start;
  position: relative;
}

/* Vertical line between problem columns */
.container-problem::before {
  content: '';
  position: absolute;
  left: calc(25% + 50px); /* Overlay the original vertical line position */
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: transparent;
  z-index: 1;
}

/* Problem icon on top of the line */
.container-problem::after {
  content: '';
  position: absolute;
  left: calc(25% + 50px - 30px); /* Center icon on the line (adjusted for larger size) */
  top: -10px;
  width: 60px;
  height: 60px;
  background-image: url('../images/case-aurum/icons/problemicon.png');
  background-size: 60px 60px;
  background-repeat: no-repeat;
  background-position: center;
  z-index: 2;
  pointer-events: none;
}

/* Fixed state for problem icon */
.container-problem.fixed-icon::after {
  position: fixed;
  top: 90px;
  left: calc(25% + 50px - 30px);
}

/* Hidden state for problem icon */
.container-problem.hidden-icon::after {
  opacity: 0;
  visibility: hidden;
}

/* Hide bullet point for empty list items */
.no-bullet {
  list-style: none;
}

/* Iteration layout box */
.iteration-layout-box {
  border: 2px solid #e0e0e0;
  border-radius: 12px;
  padding: 30px;
  background-color: transparent;
  margin: 20px 0;
}
.iteration-layout-box h3 {
  margin: 0 0 15px 0;
  font-size: 20px;
  font-weight: 600;
  color: #000000;
}

/* Second iteration layout box */
.iteration-layout-box-2 {
  border: 2px solid #e0e0e0;
  border-radius: 12px;
  padding: 20px 30px 30px 30px;
  background-color: transparent;
  margin: 20px 0;
}

.iteration-layout-box-2 h3 {
  font-size: 20px;
  font-weight: 600;
  color: #000000;
}

/* Split layout for second iteration box */
.iteration-split-layout {
  display: flex;
  gap: 30px;
  align-items: flex-end;
}

.iteration-left {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.iteration-right {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.iteration-split-layout .iteration-section {
  width: 100%;
  max-width: 400px;
}

/* Prototyping 3 Video */
/* Prototyping 3 Layout Box */
.prototyping-3-layout-box {
  border: 2px solid #e0e0e0;
  border-radius: 16px;
  padding: 30px;
  background: transparent;
  margin: 40px 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  position: relative;
  overflow: hidden;
}

.prototyping-3-container {
  display: flex;
  gap: 30px;
  align-items: flex-start;
}

.prototyping-3-video {
  flex: 2;
  text-align: left;
}

.prototyping-3-video video {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.prototyping-3-description {
  flex: 1;
  padding: 15px;
  background: transparent;
}

.prototyping-3-description h3 {
  margin: 0 0 15px 0;
  font-size: 20px;
  font-weight: 700;
  color: #2c3e50;
}

.prototyping-3-description p {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: #2c3e50;
  font-weight: 500;
}

/* Prototyping 2 Container */
.prototyping-2-container {
  display: flex;
  gap: 30px;
  margin: 40px 0;
  align-items: center;
}

.prototyping-2-video {
  flex: 2;
  text-align: center;
}

.prototyping-2-video video {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.prototyping-2-description {
  flex: 1;
  padding: 15px;
  background: transparent;
}

.prototyping-2-description p {
  margin: 0;
  font-size: 14px;
  line-height: 1.4;
  color: #2c3e50;
  text-align: left;
  font-weight: 500;
}

/* Prototyping 1 Container */
.prototyping-1-container {
  display: flex;
  gap: 30px;
  margin: 40px 0;
  align-items: center;
}

.prototyping-1-description {
  flex: 1;
  padding: 15px;
  background: transparent;
}

.prototyping-1-description p {
  margin: 0;
  font-size: 14px;
  line-height: 1.4;
  color: #2c3e50;
  text-align: left;
  font-weight: 500;
}

.prototyping-1-video {
  flex: 2;
  text-align: right;
}

.prototyping-1-video video {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.before-label {
  text-align: center;
  margin: -30px 0 5px 0;
}

/*.before-label h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: #d32f2f;
  background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
  padding: 8px 16px;
  border-radius: 6px;
  border: 2px solid #f44336;
  display: inline-block;
}*/
.before-label h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: #000;
  padding: 8px 16px;
  border-radius: 6px;
  display: inline-block;
}

.after-label {
  text-align: center;
  margin: 10px 0 -5px 0;
}

.after-label h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: #000;
  padding: 8px 16px;
  border-radius: 6px;
  display: inline-block;
}

/* Iteration components styling */
.iteration-components {
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
  justify-content: center;
}

/* Iteration description styling */
.iteration-description {
  margin-bottom: 30px;
  text-align: left;
}

.iteration-description p {
  margin: 0;
  font-size: 10px;
  line-height: 1.3;
  color: #333;
  max-width: 800px;
}

/* Component images styling */
.component-images {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  justify-content: center;
  align-items: center;
}

.component-image-section-1 {
  flex: 1;
  max-width: 200px;
  display: flex;
  justify-content: flex-end;
}

.component-image-section-2 {
  flex: 1;
  max-width: 120px;
  display: flex;
  justify-content: flex-end;
  margin-left: auto;
}

.component-img {
  width: 100%;
  height: auto;
  display: block;
  background: transparent;
}

.arrow-container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.arrow {
  font-size: 36px;
  color: #666;
  font-weight: bold;
  transform: scaleX(1.5);
}

.component-item {
  background-color: #f5f5f5;
  padding: 15px 25px;
  border-radius: 8px;
  text-align: center;
}

.component-item h4 {
  margin: 0;
  font-size: 16px;
  color: #333;
}

/* Iteration images styling */
.iteration-images {
  display: flex;
  gap: 30px;
  justify-content: center;
  align-items: flex-end;
}

.iteration-section {
  flex: 1;
  max-width: 45%;
}

.iteration-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.button-above {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 10px;
}

.above-button {
  width: 150px;
  height: auto;
  display: block;
  background: transparent;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.switch-above {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 25px;
}

.above-switch {
  width: 80px;
  height: auto;
  display: block;
  background: transparent !important;
  border-radius: 8px;
  box-shadow: none;
}

/* Interactive section styling */
.interactive-section {
  margin-top: 30px;
}

/* Process timeline */
.process-timeline {
  display: flex;
  justify-content: space-between;
  margin-bottom: 40px;
  position: relative;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #ffc107 0%, #ffeb3b 100%);
  z-index: 1;
}

.timeline-item {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 2;
  cursor: pointer;
  transition: all 0.3s ease;
}

.timeline-item:hover {
  transform: translateY(-5px);
}

.timeline-dot {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #e9ecef;
  border: 3px solid #fff;
  margin: 0 auto 15px;
  transition: all 0.5s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  position: relative;
}

.timeline-item.active .timeline-dot {
  transform: scale(1.2);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

/* Different colors for each timeline step */
.timeline-item[data-step="1"].active .timeline-dot {
  background: #FFF176; /* Light Yellow */
  box-shadow: 0 4px 16px rgba(255, 241, 118, 0.4);
}

.timeline-item[data-step="2"].active .timeline-dot {
  background: #FDD835; /* Golden Yellow */
  box-shadow: 0 4px 16px rgba(253, 216, 53, 0.4);
}

.timeline-item[data-step="3"].active .timeline-dot {
  background: #FFC849; /* Orange Yellow */
  box-shadow: 0 4px 16px rgba(255, 200, 73, 0.4);
}

.timeline-item.active .timeline-dot::after {
  content: '';
  position: absolute;
  top: -5px;
  left: -5px;
  right: -5px;
  bottom: -5px;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

/* Different pulse colors for each timeline step */
.timeline-item[data-step="1"].active .timeline-dot::after {
  background: rgba(255, 241, 118, 0.2); /* Light Yellow pulse */
}

.timeline-item[data-step="2"].active .timeline-dot::after {
  background: rgba(253, 216, 53, 0.2); /* Golden Yellow pulse */
}

.timeline-item[data-step="3"].active .timeline-dot::after {
  background: rgba(255, 200, 73, 0.2); /* Orange Yellow pulse */
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  100% {
    transform: scale(1.5);
    opacity: 0;
  }
}

.timeline-content h4 {
  margin: 0 0 8px 0;
  font-size: 16px;
  color: #333;
}

.timeline-content p {
  margin: 0;
  font-size: 14px;
  color: #666;
  line-height: 1.4;
}

/* Interactive comparison labels */
.interactive-comparison {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
}

.comparison-label {
  flex: 1;
  text-align: center;
  font-weight: 600;
  font-size: 18px;
  color: #333;
  padding: 10px;
  /*background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);*/
  background: transparent;
  border-radius: 8px;
  margin: 0 15px;
}


@keyframes countUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.arrow-above {
  display: flex;
  justify-content: center;
  padding: 20px 0 0 0;
}

.arrow-above .arrow {
  font-size: 36px;
  color: #666;
  font-weight: bold;
  transform: scaleX(2.0);
}


.left-column-problem {
  background-color: #b4b1af;
  padding: 30px 25px;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
  width: fit-content;
  height: fit-content;
  max-width: 320px;
  position: relative;
  top: -10px;
  z-index: 14;
}

.left-column-problem h2 {
  font-size: 26px;
  font-weight: 700;
  color: #111;
  margin: 0 0 8px 0;
  letter-spacing: 0.5px;
}

.left-column-problem p {
  font-size: 18px;
  color: #666;
  line-height: 1.5;
  margin: 0;
}

.right-column-problem {
  margin-right: 30px;
  padding: 0;
}

.right-column-problem h2 {
  font-size: 24px;
  font-weight: 600;
  color: #111;
  margin: 0 0 10px 0;
  letter-spacing: 0.3px;
}

.right-column-problem p {
  font-size: 18px;
  line-height: 1.7;
  color: #333;
  margin: 0 0 30px 0;
}

/* Problem Solution Pairs */
.problem-solution-pairs {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.problem-solution-pair {
  display: grid;
  grid-template-columns: 1fr auto 1.1fr;
  gap: 20px;
  align-items: center;
  opacity: 1;
  transform: translateY(0);
}

/* Three Dots Connector */
.three-dots-connector {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 0;
  position: relative;
  transition: all 0.3s ease;
}

.three-dots-connector:hover {
  transform: scale(1.1);
}

.three-dots-connector::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #666, transparent);
  transform: translateY(-50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.three-dots-connector:hover::before {
  opacity: 0.3;
}

.three-dots-connector .dot {
  width: 6px;
  height: 6px;
  background-color: #666;
  border-radius: 50%;
  opacity: 0.7;
  transition: all 0.3s ease;
  cursor: pointer;
}

.three-dots-connector .dot:hover {
  background-color: #333;
  transform: scale(1.3);
  opacity: 1;
}

.three-dots-connector .dot:nth-child(1) {
  animation: dotPulse 2s ease-in-out infinite;
}

.three-dots-connector .dot:nth-child(2) {
  animation: dotPulse 2s ease-in-out infinite 0.3s;
}

.three-dots-connector .dot:nth-child(3) {
  animation: dotPulse 2s ease-in-out infinite 0.6s;
}

@keyframes dotPulse {
  0%, 100% {
    opacity: 0.4;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.2);
  }
}

.problem-box,
.solution-box {
  background-color: #f8f9fa;
  padding: 20px;
  border-radius: 12px;
  flex: 1;
  transition: all 0.3s ease;
  cursor: pointer;
}

.problem-box {
  border-left: 4px solid #87CEEB;
  background-color: #f8f9fa;
}

.problem-box:hover {
  border-left-color: #5dade2;
  background-color: #e8f4fd;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(135, 206, 235, 0.2);
}

.solution-box {
  border-left: 4px solid #DFD2C5;
  background-color: #faf9f7;
}

.solution-box:hover {
  border-left-color: #c7b8a8;
  background-color: #f5f3f0;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(223, 210, 197, 0.2);
}

.problem-box h3,
.solution-box h3 {
  font-size: 18px;
  font-weight: 700;
  color: #111;
  margin: 0 0 10px 0;
}

.problem-box p,
.solution-box p {
  font-size: 16px;
  line-height: 1.6;
  color: #333;
  margin: 0;
}

/* Responsive Design for Problem Solution Section */
@media (max-width: 900px) {
  .container-problem {
    grid-template-columns: 1fr;
    gap: 30px;
    margin: 40px auto 30px auto;
    padding: 0 20px;
  }
  
  .container-problem::before {
    display: none;
  }
  
  .left-column-problem {
    padding: 25px;
    order: 1;
    width: 100%;
    max-width: 100%;
  }
  
  .right-column-problem {
    order: 2;
  }
  
  .left-column-problem h2 {
    font-size: 18px;
    margin-bottom: 15px;
  }
  
  .left-column-problem p {
    font-size: 15px;
  }
  
  .right-column-problem h2 {
    font-size: 24px;
    margin-bottom: 20px;
  }
  
  .right-column-problem p {
    font-size: 16px;
  }
}

@media (max-width: 600px) {
  .container-problem {
    padding: 0 15px;
    margin: 30px auto 30px auto;
  }
  
  .left-column-problem {
    padding: 20px;
  }
  
  .left-column-problem h2 {
    font-size: 16px;
  }
  
  .left-column-problem p {
    font-size: 14px;
  }
  
  .right-column-problem h2 {
    font-size: 18px;
  }
  
  .right-column-problem p {
    font-size: 14px;
  }
  
  .problem-solution-pairs {
    gap: 20px;
  }
  
  .problem-solution-pair {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  
  .three-dots-connector {
    order: 2;
    padding: 5px 0;
  }
  
  .problem-box {
    order: 1;
  }
  
  .solution-box {
    order: 3;
  }
  
  .problem-box,
  .solution-box {
    padding: 15px;
  }
  
  .problem-box h3,
  .solution-box h3 {
    font-size: 16px;
  }
  
  .problem-box p,
  .solution-box p {
    font-size: 14px;
  }
}

/* Ideation & Wireframe Section */
.container-ideation {
  max-width: 2000px;
  margin: 60px auto 60px auto;
  padding: 0 30px;
  display: grid;
  grid-template-columns: 1fr 2.8fr;
  gap: 120px;
  align-items: start;
  position: relative;
}

/* Vertical line between ideation columns */
.container-ideation::before {
  content: '';
  position: absolute;
  left: calc(25% + 50px); /* Overlay the original vertical line position */
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: transparent;
  z-index: 1;
}

/* Wireframe icon on top of the line */
.container-ideation::after {
  content: '';
  position: absolute;
  left: calc(25% + 50px - 30px); /* Center icon on the line (adjusted for larger size) */
  top: -10px;
  width: 60px;
  height: 60px;
  background-image: url('../images/case-aurum/icons/wireframeicon.png');
  background-size: 60px 60px;
  background-repeat: no-repeat;
  background-position: center;
  z-index: 2;
  pointer-events: none;
}

/* Fixed state for ideation icon */
.container-ideation.fixed-icon::after {
  position: fixed;
  top: 90px;
  left: calc(25% + 50px - 30px);
}

/* Hidden state for ideation icon */
.container-ideation.hidden-icon::after {
  opacity: 0;
  visibility: hidden;
}

.left-column-ideation {
  background-color: #fac097;
  padding: 30px 25px;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
  width: fit-content;
  height: fit-content;
  max-width: 320px;
  position: relative;
  top: -10px;
  z-index: 15;
}

.left-column-ideation h2 {
  font-size: 26px;
  font-weight: 700;
  color: #111;
  margin: 0 0 15px 0;
  letter-spacing: 0.5px;
}

.left-column-ideation p {
  font-size: 18px;
  color: #333;
  line-height: 1.5;
  margin: 0;
}

.right-column-ideation {
  margin-right: 30px;
  padding: 0;
}

.right-column-ideation h2 {
  font-size: 24px;
  font-weight: 600;
  color: #111;
  margin: 0 0 10px 0;
  letter-spacing: 0.3px;
}

.right-column-ideation p {
  font-size: 18px;
  line-height: 1.7;
  color: #333;
  margin: 0 0 20px 0;
}

.right-column-ideation ul {
  margin: 0;
  padding-left: 20px;
}

.right-column-ideation li {
  font-size: 18px;
  line-height: 1.7;
  color: #333;
  margin: 0 0 12px 0;
}

.right-column-ideation li:last-child {
  margin-bottom: 0;
}

/* Ideation Images */
.ideation-images {
  margin-top: 40px;
}

.ideation-section {
  margin-bottom: 40px;
}

.ideation-section h3 {
  font-size: 20px;
  font-weight: 600;
  color: #111;
  margin: 0 0 15px 0;
}

.ideation-section p {
  font-size: 17px;
  line-height: 1.7;
  color: #333;
  margin: 0 0 12px 0;
}

.ideation-section li {
  font-size: 17px;
  margin: 0;
  padding-left: 20px;
}

.ideation-img {
  width: 100%;
  max-width: 1100px;
  margin-top: 60px;
  height: auto;
  border-radius: 8px;
}

.wireframe-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.wireframe-section {
  text-align: center;
}

.wireframe-section h3 {
  font-size: 16px;
  font-weight: 600;
  color: #111;
  margin: 0 0 10px 0;
}

.wireframe-img {
  width: 100%;
  max-width: 200px;
  height: auto;
  border-radius: 8px;
  transition: transform 0.3s ease;
}

.wireframe-img:hover {
  transform: scale(1.05);
}

/* Responsive Design for Ideation Section */
@media (max-width: 900px) {
  .container-ideation {
    grid-template-columns: 1fr;
    gap: 30px;
    margin: 40px auto 30px auto;
    padding: 0 20px;
  }
  
  .container-ideation::before {
    display: none;
  }
  
  .left-column-ideation {
    padding: 25px;
    order: 1;
    width: 100%;
    max-width: 100%;
  }
  
  .right-column-ideation {
    order: 2;
  }
  
  .left-column-ideation h2 {
    font-size: 18px;
    margin-bottom: 15px;
  }
  
  .left-column-ideation p {
    font-size: 15px;
  }
  
  .right-column-ideation h2 {
    font-size: 20px;
    margin-bottom: 15px;
  }
  
  .right-column-ideation p {
    font-size: 15px;
  }
  
  .right-column-ideation li {
    font-size: 15px;
  }
  
  .ideation-section h3 {
    font-size: 18px;
  }
  
  .wireframe-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
  }
  
  .wireframe-section h3 {
    font-size: 14px;
  }
}

@media (max-width: 600px) {
  .container-ideation {
    padding: 0 15px;
    margin: 30px auto 30px auto;
  }
  
  .left-column-ideation {
    padding: 20px;
  }
  
  .left-column-ideation h2 {
    font-size: 16px;
  }
  
  .left-column-ideation p {
    font-size: 14px;
  }
  
  .right-column-ideation h2 {
    font-size: 18px;
  }
  
  .right-column-ideation p {
    font-size: 14px;
  }
  
  .right-column-ideation li {
    font-size: 14px;
  }
  
  .ideation-section h3 {
    font-size: 16px;
  }
  
  .wireframe-grid {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
  }
  
  .wireframe-section h3 {
    font-size: 12px;
  }
  
  .wireframe-img {
    max-width: 150px;
  }
}

/* Prototyping & Testing Section */
.container-prototyping {
  max-width: 2000px;
  margin: 60px auto 60px auto;
  padding: 0 30px;
  display: grid;
  grid-template-columns: 1fr 2.8fr;
  gap: 120px;
  align-items: start;
  position: relative;
}

/* Vertical line between prototyping columns */
.container-prototyping::before {
  content: '';
  position: absolute;
  left: calc(25% + 50px); /* Overlay the original vertical line position */
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: transparent;
  z-index: 1;
}

/* Prototyping icon on top of the line */
.container-prototyping::after {
  content: '';
  position: absolute;
  left: calc(25% + 50px - 30px); /* Center icon on the line (adjusted for larger size) */
  top: -10px;
  width: 60px;
  height: 60px;
  background-image: url('../images/case-aurum/icons/prototypingicon.png');
  background-size: 60px 60px;
  background-repeat: no-repeat;
  background-position: center;
  z-index: 2;
  pointer-events: none;
}

/* Fixed state for prototyping icon */
.container-prototyping.fixed-icon::after {
  position: fixed;
  top: 90px;
  left: calc(25% + 50px - 30px);
}

.left-column-prototyping {
  background-color: #FFE5B4;
  padding: 30px 25px;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
  width: fit-content;
  height: fit-content;
  max-width: 320px;
  position: relative;
  top: -10px;
  z-index: 16;
}

.left-column-prototyping h2 {
  font-size: 26px;
  font-weight: 700;
  color: #111;
  margin: 0 0 15px 0;
  letter-spacing: 0.5px;
}

.left-column-prototyping p {
  font-size: 18px;
  color: #333;
  line-height: 1.5;
  margin: 0;
}

.right-column-prototyping {
  margin-right: 30px;
  padding: 0;
}

.right-column-prototyping h2 {
  font-size: 24px;
  font-weight: 600;
  color: #111;
  margin: 0 0 10px 0;
  letter-spacing: 0.3px;
}

.right-column-prototyping p {
  font-size: 18px;
  line-height: 1.7;
  color: #333;
  margin: 0 0 20px 0;
}

.right-column-prototyping p:last-child {
  margin-bottom: 0;
}

.right-column-prototyping ul {
  margin: 0 0 20px 0;
  padding-left: 20px;
}

.right-column-prototyping li {
  font-size: 18px;
  line-height: 1.7;
  color: #333;
  margin: 0 0 12px 0;
}

.right-column-prototyping li:last-child {
  margin-bottom: 0;
}

/* Prototyping Images */
.prototyping-images {
  margin-top: 30px;
}

.prototyping-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.prototyping-section {
  text-align: center;
  padding: 0;
  transition: all 0.3s ease;
}

.prototyping-section:hover {
  transform: translateY(-5px);
}

.prototyping-img {
  width: 100%;
  max-width: 200px;
  height: auto;
  border-radius: 8px;
  transition: transform 0.3s ease;
}

.prototyping-img:hover {
  transform: scale(1.05);
}

/* Prototyping Videos */
.prototyping-videos {
  margin-top: 40px;
}

.prototyping-videos h3 {
  font-size: 20px;
  font-weight: 600;
  color: #111;
  margin: 0 0 20px 0;
}

.video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.video-section {
  text-align: center;
}

.prototyping-video {
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.prototyping-video:hover {
  transform: scale(1.02);
}

/* Responsive Design for Prototyping Section */
@media (max-width: 900px) {
  .container-prototyping {
    grid-template-columns: 1fr;
    gap: 30px;
    margin: 40px auto 30px auto;
    padding: 0 20px;
  }
  
  .container-prototyping::before {
    display: none;
  }
  
  .left-column-prototyping {
    padding: 25px;
    order: 1;
    width: 100%;
    max-width: 100%;
  }
  
  .right-column-prototyping {
    order: 2;
  }
  
  .left-column-prototyping h2 {
    font-size: 18px;
    margin-bottom: 15px;
  }
  
  .left-column-prototyping p {
    font-size: 15px;
  }
  
  .right-column-prototyping h2 {
    font-size: 20px;
    margin-bottom: 15px;
  }
  
  .right-column-prototyping p {
    font-size: 15px;
  }
  
  .right-column-prototyping li {
    font-size: 15px;
  }
  
  .prototyping-grid {
    grid-template-columns: 1fr 1fr;
    gap: 15px;
  }
  
  .prototyping-section {
    padding: 0;
  }
  
  .prototyping-img {
    max-width: 150px;
  }
  
  .prototyping-videos h3 {
    font-size: 18px;
  }
  
  .video-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  
  .prototyping-video {
    max-width: 250px;
  }
  
  /* Enhanced responsive design for iteration sections */
  .iteration-images {
    flex-direction: column;
    gap: 20px;
    align-items: center;
  }
  
  .iteration-section {
    max-width: 100%;
    width: 100%;
  }
  
  .iteration-description {
    text-align: center;
  }
  
  /* Enhanced responsive design for prototyping videos */
  .prototyping-3-container,
  .prototyping-2-container,
  .prototyping-1-container {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
  
  .prototyping-3-video,
  .prototyping-2-video,
  .prototyping-1-video {
    flex: none;
    text-align: center;
  }
  
  .prototyping-3-description,
  .prototyping-2-description,
  .prototyping-1-description {
    flex: none;
    text-align: center;
  }
  
  /* Component images responsive */
  .button-above,
  .switch-above {
    justify-content: center;
  }
  
  .above-button {
    width: 120px;
  }
  
  .above-switch {
    width: 60px;
  }
}

@media (max-width: 600px) {
  .container-prototyping {
    padding: 0 15px;
    margin: 30px auto 30px auto;
  }
  
  .left-column-prototyping {
    padding: 20px;
  }
  
  .left-column-prototyping h2 {
    font-size: 16px;
  }
  
  .left-column-prototyping p {
    font-size: 14px;
  }
  
  .right-column-prototyping h2 {
    font-size: 18px;
  }
  
  .right-column-prototyping p {
    font-size: 14px;
  }
  
  .right-column-prototyping li {
    font-size: 14px;
  }
  
  .prototyping-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  
  .prototyping-section {
    padding: 0;
  }
  
  .prototyping-img {
    max-width: 120px;
  }
  
  .prototyping-videos h3 {
    font-size: 16px;
  }
  
  .video-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  .prototyping-video {
    max-width: 200px;
  }
  
  /* Enhanced mobile responsive design */
  .iteration-images {
    gap: 15px;
  }
  
  .iteration-description p {
    font-size: 12px;
    line-height: 1.4;
  }
  
  .prototyping-3-container,
  .prototyping-2-container,
  .prototyping-1-container {
    gap: 15px;
    margin: 20px 0;
  }
  
  .prototyping-3-description,
  .prototyping-2-description,
  .prototyping-1-description {
    padding: 10px;
  }
  
  .prototyping-3-description p,
  .prototyping-2-description p,
  .prototyping-1-description p {
    font-size: 12px;
    line-height: 1.4;
  }
  
  .above-button {
    width: 100px;
  }
  
  .above-switch {
    width: 50px;
  }
  
  /* Timeline responsive */
  .timeline-item {
    margin-bottom: 20px;
  }
  
  .timeline-content h4 {
    font-size: 14px;
  }
  
  .timeline-content p {
    font-size: 12px;
  }
}

/* Responsive Design for Iteration Layouts */
@media (max-width: 1200px) {
  .iteration-layout-box,
  .iteration-layout-box-2 {
    padding: 25px;
  }
  
  .iteration-split-layout {
    gap: 20px;
  }
}

@media (max-width: 900px) {
  .iteration-layout-box,
  .iteration-layout-box-2 {
    padding: 20px;
    margin: 15px 0;
  }
  
  .iteration-split-layout {
    flex-direction: column;
    gap: 20px;
  }
  
  .iteration-left,
  .iteration-right {
    width: 100%;
  }
  
  .iteration-split-layout .iteration-section {
    max-width: 100%;
  }
}

@media (max-width: 600px) {
  .iteration-layout-box,
  .iteration-layout-box-2 {
    padding: 15px;
    margin: 10px 0;
  }
  
  .iteration-description p {
    font-size: 12px;
    line-height: 1.4;
  }
  
  .before-label h3,
  .after-label h3 {
    font-size: 14px;
  }
}

/* Move main vertical line to far left on mobile */
@media (max-width: 900px) {
  body::before {
    left: 30px !important; /* Move main vertical line to center of icons */
  }
  
  /* Move main icons to far left as well */
  body::after {
    left: 0 !important; /* Move main icons to far left of screen */
  }
  
  /* Move brief icon to center align with vertical line */
  .container::after {
    top: 10px;
    left: -55px !important; /* Move brief icon to center align with vertical line */
  }
  
  /* Move creative icon to far left */
  .container-journey::after {
    left: -55px !important; /* Move creative icon to far left of screen */
  }
  
  /* Move user icon to far left */
  .container-users::after {
    left: -60px !important; /* Move user icon to far left of screen */
  }
  
  /* Move problem icon to far left */
  .container-problem::after {
    left: -55px !important; /* Move problem icon to far left of screen */
  }
  
  /* Move wireframe icon to far left */
  .container-ideation::after {
    left: -55px !important; /* Move wireframe icon to far left of screen */
  }
  
  /* Move prototyping icon to far left */
  .container-prototyping::after {
    left: -55px !important; /* Move prototyping icon to far left of screen */
  }
  
  /* Move learning icon to far left */
  .container-impact::after {
    left: -55px !important; /* Move learning icon to far left of screen */
  }
  
  /* Narrow content to avoid overlap with vertical line */
  .container,
  .container-journey,
  .container-users,
  .container-problem,
  .container-ideation,
  .container-prototyping,
  .container-impact {
    margin-left: 60px !important; /* Add left margin to avoid overlap */
    padding-right: 20px !important; /* Add right padding for better spacing */
  }
  
  /* Fixed state for brief icon on mobile */
  .container.fixed-icon::after {
    position: fixed !important;
    top: 90px !important;
    left: 3px !important; /* Keep same position as mobile brief icon */
  }
  
  /* Reorder prototyping 1 description to appear after video on mobile */
  .prototyping-1-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }
  
  .prototyping-1-description {
    order: 2; /* Move description after video */
  }
  
  .prototyping-1-video {
    order: 1; /* Move video before description */
    text-align: center; /* Center the video */
  }
  
  /* Reorder iteration box 1 labels and images for mobile (only iteration box 1) */
  .interactive-section .interactive-comparison {
    display: none; /* Hide the horizontal Before/After labels in iteration box 1 */
  }
  
  .interactive-section .iteration-images {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }
  
  .interactive-section .iteration-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }
  
  /* Add Before label above iteration1-1 (only in iteration box 1) */
  .interactive-section .iteration-section:first-child::before {
    content: "Before";
    display: block;
    font-size: 14px;
    font-weight: bold;
    color: #666;
    padding: 8px 16px;
    background-color: #f5f5f5;
    border-radius: 20px;
    border: 2px solid #ddd;
    margin-bottom: 10px;
  }
  
  /* Add After label above iteration1-2 (only in iteration box 1) */
  .interactive-section .iteration-section:last-child::before {
    content: "After";
    display: block;
    font-size: 14px;
    font-weight: bold;
    color: #666;
    padding: 8px 16px;
    background-color: #f5f5f5;
    border-radius: 20px;
    border: 2px solid #ddd;
    margin-bottom: 10px;
  }
}

@media (min-width: 1001px) and (max-width: 1100px) {
  /* Reduce gap between title box and content for screens 900-1050px */
  .container,
  .container-journey,
  .container-users,
  .container-problem,
  .container-ideation,
  .container-prototyping,
  .container-impact {
    gap: 80px;
  }
  /* Increase margin-right of right side content when title box is fixed */
  .container.fixed-icon .right-column,
  .container-journey.fixed-icon .right-column-journey,
  .container-users.fixed-icon .right-column-users,
  .container-problem.fixed-icon .right-column-problem,
  .container-ideation.fixed-icon .right-column-ideation,
  .container-prototyping.fixed-icon .right-column-prototyping,
  .container-impact.fixed-icon .right-column-impact {
    margin-left: 15px;
  }
}
@media (min-width: 901px) and (max-width: 1000px) {
  .container,
  .container-journey,
  .container-users,
  .container-problem,
  .container-ideation,
  .container-prototyping,
  .container-impact {
    gap: 50px;
  }
  /* Increase gap between title box and content for screens 900-1100px when fixed 
  .container.fixed-icon,
  .container-journey.fixed-icon,
  .container-users.fixed-icon,
  .container-problem.fixed-icon,
  .container-ideation.fixed-icon,
  .container-prototyping.fixed-icon,
  .container-impact.fixed-icon {
    gap: 50px;
  }*/
  
  /* Increase margin-right of right side content when title box is fixed */
  .container.fixed-icon .right-column,
  .container-journey.fixed-icon .right-column-journey,
  .container-users.fixed-icon .right-column-users,
  .container-problem.fixed-icon .right-column-problem,
  .container-ideation.fixed-icon .right-column-ideation,
  .container-prototyping.fixed-icon .right-column-prototyping,
  .container-impact.fixed-icon .right-column-impact {
    margin-left: 32px;
  }
}


@media (min-width: 901px) and (max-width: 1400px) {
  /* Adjust title box sizes for medium screens (both fixed and non-fixed) */
  .left-column,
  .left-column-journey,
  .left-column-users,
  .left-column-problem,
  .left-column-ideation,
  .left-column-prototyping,
  .left-column-impact {
    width: 250px;
    max-width: 250px;
    padding: 35px 20px;
  }
  
  .left-column h2,
  .left-column-journey h2,
  .left-column-users h2,
  .left-column-problem h2,
  .left-column-ideation h2,
  .left-column-prototyping h2,
  .left-column-impact h2 {
    font-size: 22px;
  }
  
  .left-column p,
  .left-column-journey p,
  .left-column-users p,
  .left-column-problem p,
  .left-column-ideation p,
  .left-column-prototyping p,
  .left-column-impact p {
    font-size: 16px;
  }
}

@media (max-width: 600px) {
  .container.fixed-icon .left-column,
  .container-journey.fixed-icon .left-column-journey,
  .container-users.fixed-icon .left-column-users,
  .container-problem.fixed-icon .left-column-problem,
  .container-ideation.fixed-icon .left-column-ideation,
  .container-prototyping.fixed-icon .left-column-prototyping,
  .container-impact.fixed-icon .left-column-impact {
    left: 15px;
    top: 70px;
    width: calc(100% - 30px);
    max-width: none;
  }
  
  .container.fixed-icon .left-column h2,
  .container-journey.fixed-icon .left-column-journey h2,
  .container-users.fixed-icon .left-column-users h2,
  .container-problem.fixed-icon .left-column-problem h2,
  .container-ideation.fixed-icon .left-column-ideation h2,
  .container-prototyping.fixed-icon .left-column-prototyping h2,
  .container-impact.fixed-icon .left-column-impact h2 {
    font-size: 14px;
  }
  
  .container.fixed-icon .left-column p,
  .container-journey.fixed-icon .left-column-journey p,
  .container-users.fixed-icon .left-column-users p,
  .container-problem.fixed-icon .left-column-problem p,
  .container-ideation.fixed-icon .left-column-ideation p,
  .container-prototyping.fixed-icon .left-column-prototyping p,
  .container-impact.fixed-icon .left-column-impact p {
    font-size: 12px;
  }
}

@media (max-width: 1249px) {
  /* Make right content words smaller on screens narrower than 1250px */
  .right-column,
  .right-column-journey,
  .right-column-users,
  .right-column-problem,
  .right-column-ideation,
  .right-column-prototyping,
  .right-column-impact {
    font-size: 17px;
    line-height: 1.5;
  }
  
  .right-column h2,
  .right-column-journey h2,
  .right-column-users h2,
  .right-column-problem h2,
  .right-column-ideation h2,
  .right-column-prototyping h2,
  .right-column-impact h2 {
    font-size: 22px;
  }
  
  .right-column h3,
  .right-column-journey h3,
  .right-column-users h3,
  .right-column-problem h3,
  .right-column-ideation h3,
  .right-column-prototyping h3,
  .right-column-impact h3 {
    font-size: 20px;
  }
  
  .right-column p,
  .right-column-journey p,
  .right-column-users p,
  .right-column-problem p,
  .right-column-ideation p,
  .right-column-prototyping p,
  .right-column-impact p {
    font-size: 17px;
  }
  
  .right-column li,
  .right-column-journey li,
  .right-column-users li,
  .right-column-problem li,
  .right-column-ideation li,
  .right-column-prototyping li,
  .right-column-impact li {
    font-size: 17px;
  }
}

/* Impact & Learning Section */
.container-impact {
  max-width: 2000px;
  margin: 60px auto 60px auto;
  padding: 0 30px;
  display: grid;
  grid-template-columns: 1fr 2.8fr;
  gap: 120px;
  align-items: start;
  position: relative;
}

/* Vertical line between impact columns */
.container-impact::before {
  content: '';
  position: absolute;
  left: calc(25% + 50px); /* Overlay the original vertical line position */
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: transparent;
  z-index: 1;
}

/* Learning icon on top of the line */
.container-impact::after {
  content: '';
  position: absolute;
  left: calc(25% + 50px - 30px); /* Center icon on the line (adjusted for larger size) */
  top: 10px;
  width: 60px;
  height: 60px;
  background-image: url('../images/case-aurum/icons/learningicon.png');
  background-size: 60px 60px;
  background-repeat: no-repeat;
  background-position: center;
  z-index: 2;
  pointer-events: none;
}


/*vertical line between left and right column original version
.container-impact::before {
  content: '';
  position: absolute;
  left: calc(25% + 50px);
  top: 0;
  bottom: 0;
  width: 3px;
  background-color: #4b4b4b;
  z-index: 1;
}*/

.left-column-impact {
  background-color: #8cc160;
  padding: 30px 25px;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
  width: fit-content;
  height: fit-content;
  max-width: 320px;
  z-index: 17;
}

/* Ensure responsive settings override base settings for impact title box */
@media (min-width: 901px) and (max-width: 1400px) {
  .left-column-impact {
    width: 250px !important;
    max-width: 250px !important;
    padding: 35px 20px !important;
  }
}

.left-column-impact h2 {
  font-size: 26px;
  font-weight: 700;
  color: #111;
  margin: 0 0 15px 0;
  letter-spacing: 0.5px;
}

.left-column-impact p {
  font-size: 18px;
  color: #333;
  line-height: 1.5;
  margin: 0;
}

.right-column-impact {
  margin-right: 30px;
  padding: 0;
}

.right-column-impact h2 {
  font-size: 24px;
  font-weight: 600;
  color: #111;
  margin: 0 0 10px 0;
  letter-spacing: 0.3px;
}

.right-column-impact p {
  font-size: 18px;
  line-height: 1.7;
  color: #333;
  margin: 0 0 20px 0;
}

.right-column-impact h3 {
  font-size: 20px;
  font-weight: 600;
  color: #111;
  margin: 30px 0 15px 0;
}

.right-column-impact ul {
  margin: 0 0 20px 0;
  padding-left: 20px;
}

.right-column-impact li {
  font-size: 18px;
  line-height: 1.7;
  color: #333;
  margin: 0 0 12px 0;
}

.right-column-impact li:last-child {
  margin-bottom: 0;
}

/* Responsive Design for Impact Section */
@media (max-width: 900px) {
  .container-impact {
    grid-template-columns: 1fr;
    gap: 30px;
    margin: 40px auto 30px auto;
    padding: 0 20px;
  }
  
  .container-impact::before {
    display: none;
  }
  
  .left-column-impact {
    padding: 25px;
    order: 1;
    width: 100%;
    max-width: 100%;
  }
  
  .right-column-impact {
    order: 2;
  }
  
  .left-column-impact h2 {
    font-size: 18px;
    margin-bottom: 15px;
  }
  
  .left-column-impact p {
    font-size: 15px;
  }
  
  .right-column-impact h2 {
    font-size: 20px;
    margin-bottom: 15px;
  }
  
  .right-column-impact p {
    font-size: 15px;
  }
  
  .right-column-impact h3 {
    font-size: 18px;
    margin: 25px 0 12px 0;
  }
  
  .right-column-impact li {
    font-size: 15px;
  }
}

@media (max-width: 600px) {
  .container-impact {
    padding: 0 15px;
    margin: 30px auto 30px auto;
  }
  
  .left-column-impact {
    padding: 20px;
  }
  
  .left-column-impact h2 {
    font-size: 16px;
  }
  
  .left-column-impact p {
    font-size: 14px;
  }
  
  .right-column-impact h2 {
    font-size: 18px;
  }
  
  .right-column-impact p {
    font-size: 14px;
  }
  
  .right-column-impact h3 {
    font-size: 16px;
    margin: 20px 0 10px 0;
  }
  
  .right-column-impact li {
    font-size: 14px;
  }
}

/* Reduce gap between impact title box and right side content on screens < 1100px */
@media (max-width: 1100px) {
  .container-impact {
    gap: 60px; /* Reduce gap from 120px to 60px */
  }
}

/* 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;
  }
}