/* portfolio item header section */
.portfolio-header-section {
  padding: 4rem 2rem;
  text-align: center;
  max-width: 1000px;
  margin-top: 100px;
  margin-bottom: 100px;
}

.portfolio-header-content h2 {
  font-size: 3.5rem;
  font-family: var(--Inter-font-family);
  margin-bottom: 1.5rem;
  color: var(--Text-Color);
  line-height: 1.3;
}

.portfolio-intro {
  font-size: 1.1rem;
  font-family: var(--Nunito-font-family);
  line-height: 1.7;
  color: var(--Text-Color);
  max-width: 800px;
  margin: 0 auto;
}

/* portfolio list section */
.portfolio-list-section {
  padding: 4rem 2rem;
  margin-top: 100px;
  margin-bottom: 100px;
}

#portfolio-list-heading {
  font-size: 3rem;
  font-family: var(--Inter-font-family);
  text-align: center;
  margin-bottom: 2rem;
  color: var(--Text-Color);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.portfolio-item {
  background-color: var(--Secondary-Background-Color);
  border-radius: 10px;
  border-left: 4px solid var(--Accent-Color);
  overflow: hidden;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
  transition: transform 0.6s ease, opacity 0.6s ease;
  opacity: 0;
  transform: translateY(40px);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.portfolio-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.portfolio-thumb {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.portfolio-info {
  padding: 1.5rem;
  text-align: center;
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.portfolio-info h3 {
  font-size: 1.4rem;
  font-family: var(--Inter-font-family);
  margin-bottom: 0.75rem;
  color: var(--Text-Color);
}

.portfolio-info p {
  font-size: 1rem;
  font-family: var(--Nunito-font-family);
  color: var(--Text-Color);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.portfolio-button-1 {
  display: inline-block;
  background: none;
  border: 1px solid var(--Text-Color);
  color: var(--Text-Color);
  padding: 0.6rem 1.4rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: 6px;
  text-decoration: none;
  transition: background-color 0.3s ease, color 0.3s ease;
  margin-top: auto;
}

.portfolio-button-1:hover {
  background-color: var(--Text-Color);
  color: var(--Background-Color);
}

/* portfolio item body section */
.portfolio-item-section {
  padding: 4rem 2rem;
  max-width: 1000px;
  margin: 0 auto;
  color: var(--Text-Color);
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.portfolio-item-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.portfolio-item-container h2 {
  font-size: 3rem;
  font-family: var(--Inter-font-family);
  margin-bottom: 1.5rem;
  text-align: center;
  color: var(--Text-Color);
}

.portfolio-description {
  font-size: 1.1rem;
  font-family: var(--Nunito-font-family);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  text-align: center;
  color: var(--Text-Color);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.portfolio-image-wrapper {
  text-align: center;
  margin-bottom: 2.5rem;
}

.portfolio-feature-image {
  width: 100%;
  max-width: 600px;
  height: 350px;
  object-fit: cover;
  border-radius: 10px;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
  display: block;
  margin-left: auto;
  margin-right: auto;
}



.portfolio-tech h3 {
  font-size: 1.6rem;
  font-family: var(--Inter-font-family);
  margin-bottom: 1rem;
  color: var(--Text-Color);
  text-align: center;
}

.tech-list {
  list-style: none;
  padding-left: 0;
  margin: 0 auto 2rem;
  max-width: 800px;
  font-family: var(--Nunito-font-family);
  color: var(--Text-Color);
}

.tech-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  font-size: 1rem;
  line-height: 1.6;
}

/* Custom bullet */
.tech-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--Accent-Color);
  font-size: 1.2rem;
  line-height: 1;
}


.portfolio-links {
  text-align: center;
  margin-top: 2rem;
}

.portfolio-button {
  display: inline-block;
  background: none;
  border: 1px solid var(--Text-Color);
  color: var(--Text-Color);
  padding: 0.8rem 10rem;
  font-size: 1rem;
  font-weight: 500;
  font-family: var(--Inter-font-family);
  border-radius: 6px;
  text-decoration: none;
  margin: 0.5rem;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.portfolio-button:hover {
  background-color: var(--Text-Color);
  color: var(--Background-Color);
}




.portfolio-item-section {
  position: relative;
  overflow: hidden;
  padding: 3rem 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.portfolio-item-section .portfolio-slider-track {
  display: flex;
  transition: transform 0.5s ease;
  width: 100%; 
}

.portfolio-item-container {
  flex: 0 0 100%;
  padding: 1rem;
  box-sizing: border-box;
  scroll-snap-align: start; 
}

.portfolio-slider-track {
  display: flex;
  transition: transform 0.5s ease;
  width: 300%; 
  scroll-snap-type: x mandatory; 
  -webkit-overflow-scrolling: touch; 
}

/* Position buttons absolutely inside the section */
.portfolio-slider-controls {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  padding: 0 1rem;
  pointer-events: none; 
}

.slider-prev,
.slider-next {
  background: var(--Accent-Color);
  color: var(--Background-Color);
  border: none;
  padding: 0.5rem 1rem;
  font-size: 1.5rem;
  cursor: pointer;
  border-radius: 4px;
  pointer-events: auto; 
  z-index: 2;
}


@media (max-width: 768px) {
  /* General Layout Constraints */
  .portfolio-header-section,
  .portfolio-list-section,
  .portfolio-item-section {
    padding: 2rem 1rem;
    max-width: 100vw;
    box-sizing: border-box;
  }

  /* Header Content */
  .portfolio-header-content h2,
  .portfolio-item-container h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
  }

  .portfolio-intro,
  .portfolio-description {
    font-size: 1rem;
    line-height: 1.6;
    padding: 0 0.5rem;
    margin-bottom: 1.5rem;
  }

  /* Portfolio Grid */
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .portfolio-info {
    padding: 1rem;
  }

  .portfolio-info h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
  }

  .portfolio-info p {
    font-size: 0.95rem;
    line-height: 1.6;
  }

  /* Tech Section */
  .portfolio-tech h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
  }

  .tech-list {
    padding-left: 1rem;
  }

  .tech-list li {
    font-size: 0.95rem;
  }

  /* Buttons */
  .portfolio-button {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
  }

  .slider-prev,
  .slider-next {
    font-size: 1.2rem;
    padding: 0.3rem 0.6rem;
  }

  .portfolio-slider-controls {
    justify-content: center;
    gap: 19rem;
    margin-top: 1rem;
    max-width: 100vw;
  }

  /* Images */
  .portfolio-thumb {
    height: 140px;
    max-width: 100%;
    object-fit: cover;
  }

  .portfolio-feature-image {
    height: 380px;
    max-width: 100%;
    object-fit: cover;
  }
}

@media (max-width: 480px) {
  .portfolio-item-container h2 {
    font-size: 1.6rem;
  }

  .portfolio-description {
    font-size: 0.95rem;
  }

  .portfolio-tech h3 {
    font-size: 1.2rem;
  }

  .tech-list {
    padding-left: 0.75rem;
  }

  .tech-list li {
    font-size: 0.9rem;
  }

  .portfolio-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    width: 100%;
  }

  .portfolio-button {
    display: block;
    width: 100%;
    max-width: 320px;
    box-sizing: border-box;
    text-align: center;
    font-size: 1rem;
    padding: 0.4rem 0.8rem;
    margin: 0;
  }

  .slider-prev,
  .slider-next {
    font-size: 1rem;
    padding: 0.25rem 0.5rem;
  }

  .portfolio-thumb {
    height: 160px;
  }

  .portfolio-feature-image {
    height: 300px;
  }
}