/*
 * =============================================================================
 * PROJECT DETAIL PAGE — New UI/UX
 * Gig-style multi-image carousel with side-by-side slides, contain images,
 * outside arrows, and thumbnail strip
 * Depends on design-tokens.css
 * =============================================================================
 */

/* ============================================================================
   PAGE WRAPPER
============================================================================ */
#mainContent {
  padding: 36px 0 70px;
}

/* ============================================================================
   TOP ACTION BAR
============================================================================ */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  gap: 16px;
  flex-wrap: wrap;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary, #0B2046);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 10px;
  background: var(--primary-light, #E8EDF5);
  transition: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.back-btn:hover {
  background: var(--primary, #0B2046);
  color: #ffffff;
  transform: translateX(-2px);
}

.student-creator-tag {
  font-size: 14px;
  color: var(--text-muted, #666666);
}

.student-creator-tag strong {
  color: var(--text-heading, #000000);
  font-weight: 700;
}

/* ============================================================================
   CAROUSEL WRAPPER
   Extra horizontal padding so the -14px outside arrows don't get clipped
============================================================================ */
.product-carousel {
  width: 100%;
  margin-bottom: 32px;
  position: relative;
  /* Give room for the arrows that sit outside the viewport box */
  padding: 0 20px;
}

/* ============================================================================
   MAIN VIEWPORT WINDOW
   Light grey background + inner padding so each slide floats on a surface
============================================================================ */
.carousel-main-viewport {
  position: relative;
  width: 100%;
  height: clamp(400px, 58vh, 580px);
  background: #F7F8FA;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(11, 32, 70, 0.08);
  border: 1px solid #E0E0E0;
  padding: 14px;               /* inner padding — slides float inside */
}

/* ============================================================================
   CAROUSEL TRACK
   Holds all slides in a horizontal row; gap between visible slides
============================================================================ */
.carousel-track {
  display: flex;
  height: 100%;
  gap: 16px;
  transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
  will-change: transform;
}

/* ============================================================================
   INDIVIDUAL SLIDE
   Desktop: 2 visible at once (calc(50% - 8px) because gap is 16px total / 2)
   Mobile:  1 visible at once (100%)
============================================================================ */
.carousel-slide {
  flex: 0 0 calc(50% - 8px);    /* 2 slides visible on desktop */
  height: 100%;
  background: #ffffff;
  border: 1px solid #E0E0E0;
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
}

.carousel-slide img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;           /* show full artwork — no cropping */
  display: block;
  border-radius: 8px;
  filter: none !important;
  opacity: 1 !important;
  transition: transform 0.3s ease;
}

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

/* Mobile: 1 slide at a time */
@media (max-width: 768px) {
  .carousel-slide {
    flex: 0 0 100%;
  }
}

/* ============================================================================
   NAVIGATION ARROWS
   Sit OUTSIDE the viewport on desktop; fall inside on small screens
============================================================================ */
.nav-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #ffffff;
  color: var(--primary, #0B2046);
  border: 1.5px solid #E0E0E0;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(11, 32, 70, 0.12);
  transition: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 10;
}

.nav-arrow:hover {
  background: var(--primary, #0B2046);
  color: #ffffff;
  border-color: var(--primary, #0B2046);
  transform: translateY(-50%) scale(1.08);
}

/* Outside position on desktop */
.nav-arrow.prev { left: -14px; }
.nav-arrow.next { right: -14px; }

/* Fall inside on smaller screens where -14px would get clipped */
@media (max-width: 992px) {
  .nav-arrow.prev { left: 10px; }
  .nav-arrow.next { right: 10px; }
}

@media (max-width: 480px) {
  .nav-arrow {
    width: 38px;
    height: 38px;
    font-size: 16px;
  }
}

/* ============================================================================
   THUMBNAIL STRIP
   Auto-fit grid, each thumb 76px tall, contain image inside padded cell
============================================================================ */
.sub-images-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.sub-image-item {
  position: relative;
  height: 76px;
  border-radius: 10px;
  overflow: hidden;
  border: 2px solid #E0E0E0;
  background: #ffffff;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 12px rgba(11, 32, 70, 0.05);
}

.sub-image-item img {
  width: 100%;
  height: 100%;
  object-fit: contain;            /* show full thumb without cropping */
  display: block;
  border-radius: 4px;
  filter: none !important;
  opacity: 1 !important;
}

.sub-image-item:hover {
  border-color: var(--primary-light, #E8EDF5);
  transform: translateY(-2px);
}

.sub-image-item.active {
  border-color: var(--primary, #0B2046);
  box-shadow: 0 0 0 2px rgba(11, 32, 70, 0.20);
}

@media (max-width: 600px) {
  .sub-images-strip {
    grid-template-columns: repeat(auto-fit, minmax(72px, 1fr));
    gap: 10px;
  }
  .sub-image-item {
    height: 60px;
  }
}

/* ============================================================================
   PROJECT INFO BOX
============================================================================ */
.project-info-box {
  background: #ffffff;
  border: 1px solid #E0E0E0;
  border-radius: 16px;
  padding: clamp(24px, 4vw, 36px);
  box-shadow: 0 4px 12px rgba(11, 32, 70, 0.05);
}

.info-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.project-heading {
  font-size: clamp(24px, 3.5vw, 32px);
  font-weight: 800;
  color: #000000;
  line-height: 1.2;
  flex: 1;
  min-width: 200px;
}

.category-badge {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary, #0B2046);
  background: var(--primary-light, #E8EDF5);
  padding: 6px 14px;
  border-radius: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
  flex-shrink: 0;
}

.brief-description {
  font-size: 16px;
  color: #333333;
  line-height: 1.7;
  margin-bottom: 24px;
}

/* ============================================================================
   META FOOTER ROW
============================================================================ */
.meta-footer-row {
  display: flex;
  align-items: center;
  border-top: 1px solid #E0E0E0;
  padding-top: 20px;
}

.student-badge-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary, #0B2046);
  color: #ffffff;
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.student-title-sub {
  font-size: 16px;
  font-weight: 700;
  color: #000000;
  line-height: 1.3;
}

.student-course-sub {
  font-size: 13px;
  color: #666666;
  line-height: 1.4;
}

.tools-used {
  font-size: 14px;
  color: #666666;
}

.tools-used strong {
  color: #000000;
  font-weight: 600;
}

/* ============================================================================
   RESPONSIVE
============================================================================ */
@media (max-width: 768px) {
  #mainContent {
    padding: 24px 0 50px;
  }

  .top-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .product-carousel {
    padding: 0 8px;          /* reduce side padding on mobile */
  }

  .carousel-main-viewport {
    height: clamp(300px, 52vh, 460px);
    padding: 10px;
  }

  .info-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .meta-footer-row {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .carousel-main-viewport {
    height: 280px;
    border-radius: 12px;
    padding: 8px;
  }

  .product-carousel {
    padding: 0 4px;
  }

  .project-info-box {
    padding: 20px;
  }

  .project-heading {
    font-size: 22px;
  }
}