/* ============================================
   PROJECT PAGE STYLES
   ============================================ */

/* Project Page Body - Full-page scroll snap */
body:has(.project-hero) {
  background-color: #090909;
  overflow-x: hidden;
  scroll-snap-type: y proximity;
  scroll-behavior: smooth;
}

/* Back Button */
.back-button {
  position: fixed;
  top: var(--space-lg);
  left: var(--space-lg);
  width: 48px;
  height: 48px;
  background-color: #000000;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  text-decoration: none;
  z-index: 100;
  transition: background-color 0.2s ease;
}

.back-button:hover {
  background-color: #1a1a1a;
}

/* Container for sections */
.project-sticky-container {
  position: relative;
}

/* Project Hero Section */
.project-hero {
  width: 100%;
  height: 100vh;
  overflow: visible;
  position: sticky;
  top: 0;
  background-color: #090909;
  z-index: 1;
  scroll-snap-align: start;
}

.project-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  height: 100%;
}

/* Left Column: Image */
.project-hero-image {
  height: 100%;
  overflow: hidden;
  display: flex;
  align-items: stretch;
  justify-content: stretch;
  padding: 0;
  opacity: 0;
  transform: translateX(-100%);
  animation: slideFromLeft 0.8s ease-out forwards;
}

.project-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

/* Right Column: Info */
.project-hero-info {
  display: grid;
  grid-template-rows: 50% 50%;
  height: 100%;
}

/* Upper Section */
.project-info-upper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-content: center;
  padding: var(--space-2xl);
  gap: var(--space-xl) var(--space-lg);
  opacity: 0;
  transform: translateY(-100%);
  animation: slideFromTop 0.8s ease-out forwards;
}

/* Hero Upper Section - Equal row heights */
.project-hero-info .project-info-upper {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  align-content: stretch;
}

/* Lower Section */
.project-info-lower {
  padding: var(--space-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(100%);
  animation: slideFromBottom 0.8s ease-out forwards;
}

/* Project Logo */
.project-logo {
  max-width: 400px;
  height: auto;
  pointer-events: none;
}

/* Lower Section with Text */
.project-info-lower-text {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-content: center;
  gap: var(--space-xl) var(--space-lg);
  justify-content: flex-start;
  align-items: flex-start;
}

/* Info Block - Contents to flatten into parent grid */
.project-info-block {
  display: contents;
}

/* Label */
.project-info-label {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-regular);
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  align-self: start;
  padding-top: 0.35em;
}

/* Value */
.project-info-value {
  font-weight: var(--font-weight-medium);
  color: #ffffff;
}

/* Project Name (headline) */
.project-name {
  font-size: var(--text-5xl);
  font-weight: var(--font-weight-bold);
  line-height: 1.1;
  color: #ffffff;
}

/* Project Details */
.project-details {
  font-size: var(--text-base);
  line-height: 1.8;
  color: #ffffff;
}

.project-details p {
  margin-bottom: var(--space-xs);
}

.project-details p:last-child {
  margin-bottom: 0;
}

.project-details strong {
  font-weight: var(--font-weight-regular);
  color: var(--color-gray-500);
}

/* Entry Animations */
@keyframes slideFromLeft {
  from {
    opacity: 0;
    transform: translateX(-100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideFromTop {
  from {
    opacity: 0;
    transform: translateY(-100%);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideFromBottom {
  from {
    opacity: 0;
    transform: translateY(100%);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   PROJECT SECTIONS (Scrollable)
   ============================================ */

/* Project Section - Slides in over previous content */
.project-section {
  width: 100%;
  min-height: 100vh;
  position: relative;
  background-color: transparent;
  z-index: 2;
  scroll-snap-align: start;
}

/* Sticky section - stays in place while next section slides over */
.project-section-sticky {
  position: sticky;
  top: 0;
  min-height: 100vh;
  z-index: 1;
}

.project-section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
  position: relative;
}

/* Left column has solid background, right is transparent */
.project-section-left {
  background-color: #090909;
}

/* Right column has solid background */
.project-section-right {
  background-color: #090909;
}

/* Section Left Column - Layout */
.project-section-left {
  display: grid;
  grid-template-rows: 50vh 50vh;
  min-height: 100vh;
}

.project-section-left-full {
  grid-template-rows: 1fr;
}

/* Section Right Column - Layout */
.project-section-right {
  display: grid;
  grid-template-rows: 50vh 50vh;
  min-height: 100vh;
}

/* Section Image */
.project-section-image {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

.project-section-image-full {
  height: 100%;
}

.project-section-image img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  cursor: pointer;
  pointer-events: auto;
}

/* Section Info */
.project-section-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-content: start;
  padding: var(--space-2xl);
  gap: var(--space-xl) var(--space-lg);
  overflow-y: auto;
}

/* Section Diagram */
.project-section-diagram {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  overflow: hidden;
  cursor: pointer;
}

.project-section-diagram img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  cursor: pointer;
  pointer-events: auto;
}

.project-section-diagram::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M15 3h6v6M9 21H3v-6M21 3l-7 7M3 21l7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 2;
}

.project-section-diagram:hover::after {
  opacity: 1;
}

/* Diagram Title */
.project-diagram-title {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  z-index: 1;
}

/* Image Title */
.project-image-title {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  z-index: 1;
  white-space: nowrap;
}

/* ============================================
   INFO-ONLY SECTION (Right column only)
   ============================================ */

/* Info-only section - right side solid, left side transparent */
.project-section-info-only {
  display: flex;
  justify-content: flex-end;
  background: transparent;
  position: sticky;
  top: 0;
  z-index: 2;
  height: 100vh;
  scroll-snap-align: start;
}

.project-section-info-grid {
  display: grid;
  grid-template-rows: 50vh 50vh;
  height: 100vh;
  width: 50%;
  background-color: #090909;
}

.project-section-info-only .project-info-upper,
.project-section-info-only .project-info-lower {
  opacity: 1;
  transform: translateY(0);
  animation: none;
}

/* ============================================
   IMAGES-ONLY SECTION (Left column only)
   ============================================ */

/* Images-only section - left side solid, right side transparent */
.project-section-images-only {
  display: flex;
  justify-content: flex-start;
  background: transparent;
  position: sticky;
  top: 0;
  z-index: 2;
  min-height: 100vh;
  scroll-snap-align: start;
}

.project-section-images-grid {
  display: grid;
  grid-template-rows: 50vh 50vh;
  min-height: 100vh;
  width: 50%;
  background-color: #090909;
}

/* ============================================
   IMAGES-ONLY SECTION (Right column only)
   ============================================ */

/* Images-only section - right side solid, left side transparent */
.project-section-images-right-only {
  display: flex;
  justify-content: flex-end;
  background: transparent;
  position: sticky;
  top: 0;
  z-index: 2;
  height: 100vh;
  scroll-snap-align: start;
}

.project-section-images-right-grid {
  display: grid;
  grid-template-rows: 1fr;
  height: 100vh;
  width: 50%;
  background-color: #090909;
}

.project-section-images-right-grid-2rows {
  grid-template-rows: 50vh 50vh;
  height: 100vh;
}

/* ============================================
   RESPONSIVE - Hero
   ============================================ */

@media (max-width: 1024px) {
  /* Disable strict scroll snap on tablet/mobile for better UX */
  body:has(.project-hero) {
    scroll-snap-type: y proximity;
  }

  .project-hero,
  .project-section-sticky,
  .project-section-info-only,
  .project-section-images-only {
    position: relative;
  }

  .project-hero-grid {
    grid-template-columns: 1fr;
    grid-template-rows: 50vh auto;
  }

  /* Full width backgrounds on tablet/mobile */
  .project-section-info-only,
  .project-section-images-only {
    background-color: #090909;
  }

  .project-hero-image {
    height: 50vh;
    padding: var(--space-md);
  }

  .project-info-upper {
    padding: var(--space-xl);
    gap: var(--space-lg) var(--space-md);
  }

  .project-info-lower-text {
    padding: var(--space-xl);
    gap: var(--space-lg) var(--space-md);
  }

  .project-name {
    font-size: var(--text-4xl);
  }

  /* Info-only section responsive */
  .project-section-info-only {
    justify-content: center;
  }

  .project-section-info-grid {
    width: 100%;
    padding: 0 var(--space-lg);
  }

  /* Images-only section responsive */
  .project-section-images-only {
    justify-content: center;
  }

  .project-section-images-grid {
    width: 100%;
    grid-template-rows: 50vh 50vh;
  }

  /* Images-only right section responsive */
  .project-section-images-right-only {
    justify-content: center;
    background-color: #090909;
  }

  .project-section-images-right-grid {
    width: 100%;
    grid-template-rows: 50vh;
  }

  .project-section-images-right-grid-2rows {
    grid-template-rows: 50vh 50vh;
    min-height: 100vh;
  }
}

@media (max-width: 640px) {
  .project-info-upper {
    padding: var(--space-lg);
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .project-info-lower-text {
    grid-template-columns: 1fr;
    padding: var(--space-lg);
    gap: var(--space-sm);
  }

  .project-info-label {
    padding-top: 0;
  }

  .project-name {
    font-size: var(--text-3xl);
  }

  .project-details {
    font-size: var(--text-sm);
  }

  .project-logo {
    max-width: 300px;
  }
}

/* ============================================
   RESPONSIVE - Project Sections
   ============================================ */

@media (max-width: 1024px) {
  .project-section {
    height: auto;
    min-height: 100vh;
  }

  .project-section-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    height: auto;
  }

  .project-section-left {
    grid-template-rows: 50vh 50vh;
    height: auto;
  }

  .project-section-left-full {
    grid-template-rows: 100vh;
  }

  .project-section-right {
    grid-template-rows: 50vh 50vh;
    height: auto;
  }

  .project-section-info {
    padding: var(--space-xl);
    gap: var(--space-lg) var(--space-md);
    min-height: 50vh;
  }

  .project-section-diagram {
    min-height: 50vh;
  }
}

@media (max-width: 640px) {
  .project-section-info {
    grid-template-columns: 1fr;
    padding: var(--space-lg);
    gap: var(--space-sm);
  }

  .project-section-image {
    min-height: 50vh;
    padding: var(--space-md);
  }

  .project-section-diagram {
    min-height: 50vh;
    padding: var(--space-md);
  }

  .project-diagram-title {
    top: var(--space-md);
    left: var(--space-md);
    font-size: var(--text-xs);
  }
}

/* ============================================
   REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .project-hero-image,
  .project-info-upper,
  .project-info-lower {
    animation: none;
    opacity: 1;
    transform: none;
  }
}

/* ============================================
   LIGHTBOX MODAL
   ============================================ */

.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  cursor: pointer;
  overflow: hidden;
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-image {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  cursor: zoom-in;
  transform: scale(0.9);
  transition: transform 0.3s ease;
  user-select: none;
  -webkit-user-drag: none;
}

.lightbox.active .lightbox-image {
  transform: scale(1);
}

.lightbox.active .lightbox-image.zoomed {
  transform: scale(1.8);
  cursor: grab;
}

.lightbox.active .lightbox-image.zoomed.dragging {
  cursor: grabbing;
  transition: none;
}

.lightbox-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  width: 48px;
  height: 48px;
  background-color: #000000;
  border: none;
  color: #ffffff;
  font-size: 28px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s ease;
  z-index: 1001;
}

.lightbox-close:hover {
  background-color: #1a1a1a;
}

.lightbox-title {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  color: #ffffff;
  font-size: var(--font-size-base);
  font-weight: 500;
  text-align: center;
  padding: var(--space-xs) var(--space-md);
  background-color: rgba(0, 0, 0, 0.7);
  border-radius: 4px;
  max-width: 90%;
  z-index: 1001;
}

.lightbox-title:empty {
  display: none;
}

/* Make project images clickable */
.project-section-image,
.project-section-diagram {
  position: relative;
  cursor: pointer;
}

/* Hover overlay for expandable images */
.project-section-image::after,
.project-section-diagram::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M15 3h6v6M9 21H3v-6M21 3l-7 7M3 21l7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 2;
}

.project-section-image:hover::after,
.project-section-diagram:hover::after {
  opacity: 1;
}

/* ============================================
   SCROLL TO TOP BUTTON
   ============================================ */

.scroll-to-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 48px;
  height: 48px;
  background-color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  cursor: pointer;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, background-color 0.2s ease;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-to-top:hover {
  background-color: #1a1a1a;
}

/* ============================================
   MORE PROJECTS SECTION
   ============================================ */

.more-projects-section {
  width: 100%;
  min-height: 100vh;
  background-color: #090909;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
  scroll-snap-align: start;
}

.more-projects-container {
  width: 100%;
  max-width: 1200px;
  padding: var(--space-3xl) var(--space-2xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2xl);
}

.more-projects-title {
  font-size: var(--text-4xl);
  font-weight: var(--font-weight-bold);
  color: #ffffff;
  text-align: center;
}

.more-projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  width: 100%;
}

.more-projects-card {
  display: block;
  text-decoration: none;
  background-color: #111111;
  overflow: hidden;
  transition: transform 0.3s ease, background-color 0.3s ease;
}

.more-projects-card:hover {
  transform: translateY(-4px);
  background-color: #1a1a1a;
}

.more-projects-card-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.more-projects-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.more-projects-card:hover .more-projects-card-image img {
  transform: scale(1.03);
}

.more-projects-card-info {
  padding: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.more-projects-card-name {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-semibold);
  color: #ffffff;
}

.more-projects-card-tag {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-regular);
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.more-projects-btn {
  border-color: #ffffff;
  color: #ffffff;
}

.more-projects-btn:hover,
.more-projects-btn:focus-visible {
  background-color: #ffffff;
  color: #090909;
}

/* More Projects Responsive */
@media (max-width: 640px) {
  .more-projects-grid {
    grid-template-columns: 1fr;
  }

  .more-projects-title {
    font-size: var(--text-3xl);
  }

  .more-projects-container {
    padding: var(--space-2xl) var(--space-lg);
  }
}

/* ============================================
   PROJECT FOOTER
   ============================================ */

.project-footer {
  position: relative;
  z-index: 2;
  border-top: none;
  background-color: #ffffff;
}

.project-footer .footer-text {
  color: #090909;
}

/* ============================================
   SCROLL APPEAR ANIMATIONS
   ============================================ */

/* Initial hidden state for animatable elements */
.scroll-appear {
  opacity: 0;
  transform: translateY(-30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

/* Visible state when scrolled into view */
.scroll-appear.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for multiple elements */
.scroll-appear.delay-1 { transition-delay: 0.1s; }
.scroll-appear.delay-2 { transition-delay: 0.2s; }
.scroll-appear.delay-3 { transition-delay: 0.3s; }
.scroll-appear.delay-4 { transition-delay: 0.4s; }