/* ------------------------------------------------------
   GLOBAL & PROJECT ACCENTS
------------------------------------------------------ */
:root,
[data-theme="dark"] {
  --project-primary-color: #10b981;
  --accent-primary: #10b981;
  --accent-hover: #34d399;
  --accent-glow: rgba(16, 185, 129, 0.25);
  --app-screen-fade: rgba(13, 13, 13, 0.85);
}

[data-theme="light"] {
  --project-primary-color: #006145;
  --accent-primary: #006145;
  --accent-hover: #047857;
  --accent-glow: rgba(0, 97, 69, 0.15);
  --app-screen-fade: rgba(248, 250, 252, 0.75);
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-primary);
  line-height: var(--lh-body);
  margin: 0;
  padding: 0;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ACCESSIBILITY KEYBOARD FOCUS INDICATORS */
a:focus-visible,
button:focus-visible,
.final-btn:focus-visible,
.back-home-btn:focus-visible,
.resource-card:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--netlink-accent-primary) !important;
  outline-offset: 4px !important;
  box-shadow: 0 0 0 4px var(--netlink-accent-glow) !important;
  border-radius: var(--radius-sm);
}

.app-screen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 70vh;
  background: linear-gradient(
    0deg,
    var(--bg-primary),
    var(--app-screen-fade)
  ), url("../assets/gallery/desktop-main.webp");
  opacity: 0.45;
  background-size: cover;
  background-position: center;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 0;
}

/* ------------------------------------------------------
   HEADER
------------------------------------------------------ */
.logo {
  color: var(--netlink-accent-primary)!important;
}
.theme-toggle:hover svg {
  fill: var(--netlink-accent-hover)!important;
}
.nav-link:hover {
  color: var(--netlink-accent-hover)!important;
}
.nav-link::after {
  background: var(--netlink-accent-primary)!important;
}
.nav-link.active {
  color: var(--netlink-accent-primary)!important;
}
.icon-btn:hover svg {
  fill: var(--netlink-accent-hover)!important;
}
.portfolio-btn {
  background: var(--netlink-accent-primary)!important;
}
.portfolio-btn:hover {
  background: var(--netlink-accent-hover)!important;
}
.progress-bar {
  background: var(--netlink-accent-primary)!important;
}

/* ------------------------------------------------------
   HERO
------------------------------------------------------ */
.project-hero {
  text-align: center;
  padding: 2rem 1.5rem 4rem;
  border-radius: var(--radius-xl);
  max-width: 1100px;
  margin: 5rem auto 2rem auto;
  z-index: 1;
}

.project-logo {
  width: auto;
  height: 200px;
  filter: drop-shadow(0 0 12px var(--netlink-accent-glow));
  transition: transform var(--transition-normal), filter var(--transition-normal);
}

.project-logo:hover {
  transform: translateY(-6px) scale(1.05);
  filter: drop-shadow(0 0 30px var(--netlink-accent-glow));
}

.project-title {
  font-family: var(--font-primary);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  margin-bottom: 1rem;
  color: var(--text-primary);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.9s ease forwards;
}

.project-subtitle {
  font-family: var(--font-primary);
  font-size: var(--fs-xl);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 1s ease forwards;
}

/* ------------------------------------------------------
   META
------------------------------------------------------ */
.project-meta {
  margin: 4rem auto;
  max-width: 1100px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding: 2rem;
  border-radius: var(--radius-xl);
}

.meta-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.meta-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--netlink-accent-hover);
}

.meta-item:hover > .meta-label {
  color: var(--netlink-accent-hover);
}

.meta-label {
  font-family: var(--font-primary);
  font-size: var(--fs-md);
  color: var(--text-primary);
  font-weight: var(--fw-medium);
  margin: 0;
}

.meta-value {
  font-family: var(--font-primary);
  font-size: var(--fs-md);
  color: var(--text-secondary);
}

/* ------------------------------------------------------
   NAVIGATION LINKS (INDEX)
------------------------------------------------------ */
.project-index {
  max-width: 1100px;
  margin: 1rem auto;
  padding: 1rem 1rem;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.3rem;
}

.index-column {
  margin: 1rem 0;
}

.index-title {
  font-family: var(--font-primary);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  text-decoration: none;
}

.index-title:hover {
  color: var(--netlink-accent-hover)!important;
}

.index-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.index-link {
  display: block;
  padding: 0.15rem 0;
  font-family: var(--font-primary);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-decoration: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast), color var(--transition-fast);
}

.index-link:hover {
  color: var(--text-primary);
  transform: translateX(4px);
}

.index-important {
  color: var(--netlink-accent-primary)!important;
  font-weight: var(--fw-semibold);
  text-decoration: none;
}

@media (max-width: 900px) {
  .index-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .index-grid {
    grid-template-columns: 1fr;
  }
}

/* ------------------------------------------------------
   ABOUT THIS APP
------------------------------------------------------ */
.project-about {
  max-width: 1100px;
  margin: 4rem auto;
  padding: 3rem 1.5rem;
  border-radius: var(--radius-xl);
}

.about-intro {
  max-width: 850px;
  margin: 2rem 0;
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  line-height: var(--lh-body);
  text-align: left;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.about-card {
  background: var(--bg-secondary);
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.about-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--netlink-accent-hover)!important;
}

.about-card-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.8rem;
}

.about-card-header svg {
  fill: var(--netlink-accent-primary);
}

.about-card-title {
  font-family: var(--font-primary);
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  margin: 0.6rem 0;
}

.about-card-text {
  font-family: var(--font-primary);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: var(--lh-body);
}

.highlight {
  color: var(--netlink-accent-primary);
  font-weight: var(--fw-semibold);
}

/* ------------------------------------------------------
   SYSTEM DESIGN
------------------------------------------------------ */
.system-section {
  max-width: 1100px;
  margin: 4rem auto;
  padding: 0 1.5rem;
}

.system-grid {
  display: grid;
  grid-template-columns: 2fr 1.3fr;
  gap: 2rem;
}

.system-column {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.system-subtitle {
  font-size: var(--fs-md);
  font-family: var(--font-primary);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.system-text {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: var(--lh-body);
  transition: transform var(--transition-normal);
}

.system-text:hover {
  transform: translateY(-4px);
}

.system-card {
  background: var(--bg-secondary);
  padding: 1.6rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.system-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--netlink-accent-hover);
}

.system-card-title {
  font-size: var(--fs-lg);
  font-family: var(--font-primary);
  font-weight: var(--fw-semibold);
  color: var(--netlink-accent-primary);
  margin-bottom: 0.6rem;
}

.system-card-text {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.system-list {
  list-style: none;
  padding: 0;
  margin: 0 0 0.6rem 0;
}

.system-list li {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  padding: 0.2rem 0;
}

.system-highlight {
  font-family: var(--font-primary);
  font-weight: var(--fw-semibold);
  color: var(--netlink-accent-primary);
}

/* ------------------------------------------------------
   UX CASE STUDY
------------------------------------------------------ */
.ux-section {
  max-width: 1100px;
  margin: 3rem auto;
  padding: 2rem 1.5rem;
}

.ux-subtitle {
  font-size: var(--fs-md);
  font-family: var(--font-primary);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.ux-text {
  font-family: var(--font-primary);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: var(--lh-body);
}

.ux-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
}

.ux-subgrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
}

.ux-card {
  background: var(--bg-secondary);
  padding: 1.8rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow), border-color var(--transition-slow);
}

.ux-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--netlink-accent-hover);
}

.ux-subcard {
  transition: transform var(--transition-slow);
}

.ux-subcard:hover {
  transform: translateY(-6px);
}

.ux-card-title {
  font-size: var(--fs-lg);
  font-family: var(--font-primary);
  font-weight: var(--fw-bold);
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.ux-card-text {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: var(--lh-body);
}

.ux-list {
  list-style: none;
  padding: 0;
  margin: 0;
  color: var(--text-primary);
  font-family: var(--font-primary);
}

.ux-list li {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  padding: 0.3rem 0;
}

.ux-list-dark {
  list-style: circle;
  list-style-position: inside;
}

.ux-list-dark li {
  color: var(--text-primary);
  padding-left: 1.5rem;
}

.ux-list-highlight {
  font-weight: var(--fw-bold);
  color: var(--text-primary);
}

.ux-highlight {
  font-weight: var(--fw-bold);
  color: var(--netlink-accent-primary);
  padding: 0 2px;
}

/* ------------------------------------------------------
   GALLERY
------------------------------------------------------ */
.project-gallery {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.gallery-title {
  font-family: var(--font-primary);
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--text-primary);
  margin-bottom: 2rem;
}

.gallery-heading {
  font-family: var(--font-primary);
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  margin-bottom: 2rem;
}

.gallery-primary-wrapper {
  max-width: 1100px;
  margin: 0 auto 3rem auto;
}

.gallery-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.gallery-img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.gallery-label {
  margin-top: 0.4rem;
  font-family: var(--font-primary);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-align: left;
}

.gallery-item {
  opacity: 0;
  transform: translateY(20px) scale(0.98);
  transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.4s ease;
}

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

.gallery-item:hover .gallery-img {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-md);
}

/* ------------------------------------------------------
   LIVE DEMO & RESOURCES
------------------------------------------------------ */
.links-section {
  max-width: 1100px;
  margin: 3rem auto;
  padding: 3rem 1.5rem;
}

.links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.link-card {
  background: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.link-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--netlink-accent-hover);
}

.link-card:hover .link-title {
  color: var(--netlink-accent-hover);
}

.link-card svg {
  fill: var(--text-primary);
  transition: fill var(--transition-normal);
}

.link-card:hover svg {
  fill: var(--netlink-accent-hover);
}

.link-title {
  font-family: var(--font-primary);
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  margin: 0;
}

.link-desc {
  font-family: var(--font-primary);
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  line-height: var(--lh-body);
  margin-top: 0.4rem;
}

.links-download-wrapper {
  display: flex;
  justify-content: center;
  margin-top: 2.5rem;
}

.links-download-btn {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-secondary);
  padding: 1rem 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  font-family: var(--font-primary);
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  color: var(--text-primary);
  text-decoration: none;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal), background var(--transition-normal);
}

.links-download-btn svg {
  fill: var(--text-primary);
  transition: fill var(--transition-normal);
}

.links-download-btn:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
}

.links-download-btn:hover svg {
  fill: #ffffff;
}

/* ------------------------------------------------------
   RESULTS | LEARNING | CTA
------------------------------------------------------ */
.final-section {
  max-width: 1100px;
  margin: 3rem auto;
  padding: 3rem 1.5rem;
}

.final-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.final-subtitle {
  font-family: var(--font-primary);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--text-primary);
  margin-bottom: 0.8rem;
}

.final-text {
  font-family: var(--font-primary);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: var(--lh-body);
  margin-bottom: 1rem;
}

.final-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.final-list li {
  font-family: var(--font-primary);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: var(--lh-body);
}

.final-highlight {
  font-family: var(--font-primary);
  font-weight: var(--fw-bold);
  color: var(--netlink-accent-primary);
}

.final-cta {
  margin-top: 2rem;
}

.final-btn {
  display: inline-block;
  margin-top: 1.2rem;
  padding: 0.9rem 1.6rem;
  border-radius: var(--radius-md);
  background: var(--accent-primary);
  color: #ffffff;
  font-family: var(--font-primary);
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
  text-decoration: none;
  transition: background var(--transition-normal), transform var(--transition-normal);
}

.final-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-3px);
}

/* ------------------------------------------------------
   ANIMATIONS
------------------------------------------------------ */
@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ------------------------------------------------------
   RESPONSIVE
------------------------------------------------------ */
@media (max-width: 1024px) {
  .project-meta {
    grid-template-columns: repeat(2, 1fr);
  }
  .system-grid {
    grid-template-columns: 1fr;
  }
  .ux-grid {
    grid-template-columns: 1fr;
  }
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }  
  .links-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .final-columns {
    grid-template-columns: 1fr;
  }  
}

@media (max-width: 768px) {
  .project-hero {
    margin-top: 4.5rem;
    padding: 1.5rem 1rem 2.5rem;
  }
  .project-about,
  .system-section,
  .ux-section,
  .links-section,
  .final-section {
    margin: 2rem auto;
    padding: 2rem 1rem;
  }
  .project-meta {
    grid-template-columns: 1fr;
    padding: 1rem;
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .gallery-grid {
    grid-template-columns: 1fr;
  }  
  .links-grid {
    grid-template-columns: 1fr;
  }
}