/* ========================================
   VPKT Gallery — Hotlapper Project Page
   ======================================== */

/* --- PROJECT HERO --- */
.project-hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem var(--gutter) 2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
.project-hero-text {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.project-label {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
}
.project-title {
  font-family: var(--font-headline);
  font-size: var(--text-4xl);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.project-subtitle {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 540px;
}
.project-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}
.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.6rem 1.25rem;
  border: 1px solid var(--color-rule);
  border-radius: 2px;
  color: var(--color-text);
  transition: all 0.25s ease;
}
.project-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.project-link--primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}
.project-link--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #fff;
}

/* App icon */
.project-hero-visual {
  display: flex;
  justify-content: center;
}
.app-icon-wrapper {
  width: 200px;
  height: 200px;
  border-radius: 40px;
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-rule);
}
.app-icon-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- DIVIDER --- */
.section-divider {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.section-divider hr {
  border: none;
  border-top: 1px solid var(--color-rule);
}

/* --- TECH STACK --- */
.tech-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem var(--gutter);
}
.tech-section-title {
  font-family: var(--font-headline);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 1.5rem;
}

/* Stack columns */
.stack-columns {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.stack-group-title {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 0.6rem;
}
.tech-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tech-badge {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--color-rule);
  border-radius: 2px;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  transition: border-color 0.2s, color 0.2s;
}
.tech-badge:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
}

/* --- FEATURES --- */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.feature-card {
  padding: 1.5rem;
  border: 1px solid var(--color-rule);
  border-radius: 6px;
  background: var(--color-surface);
  transition: border-color 0.2s, transform 0.2s;
}
.feature-card:hover {
  border-color: var(--color-rule-dark);
  transform: translateY(-2px);
}
.feature-icon {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}
.feature-title {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: 0.4rem;
}
.feature-desc {
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-text-secondary);
}

/* --- ARCHITECTURE FLOW --- */
.arch-flow {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
}
.arch-step {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1.25rem 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-rule);
  border-radius: 6px;
}
.arch-step-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.arch-step-content {
  flex: 1;
}
.arch-step-title {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: 0.25rem;
}
.arch-step-desc {
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-text-secondary);
}
.arch-arrow {
  text-align: center;
  font-size: 1.25rem;
  color: var(--color-accent);
  padding: 0.35rem 0;
}

/* --- API ENDPOINTS --- */
.api-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.api-group {
  padding: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-rule);
  border-radius: 6px;
}
.api-group-title {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 0.6rem;
}
.api-endpoints {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.api-endpoints code {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.72rem;
  color: var(--color-text-secondary);
  padding: 0.2rem 0;
}
.api-note {
  margin-top: 1rem;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  font-style: italic;
}

/* --- SCREENSHOTS CAROUSEL --- */
.screenshots-carousel {
  position: relative;
  overflow: hidden;
}
.screenshots-scroll {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 1rem 0 2rem;
}
.screenshots-scroll::-webkit-scrollbar {
  display: none;
}
.screenshot-item {
  flex: 0 0 auto;
  width: 400px;
  aspect-ratio: 1320 / 2868;
  border-radius: 24px;
  border: 1px solid var(--color-rule);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  scroll-snap-align: center;
  overflow: hidden;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.screenshot-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.carousel-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 0.5rem;
}
.carousel-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-rule);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.25s ease, background 0.25s ease;
}
.carousel-btn:hover {
  border-color: var(--color-text-tertiary);
  background: rgba(255, 255, 255, 0.05);
}
.carousel-btn svg {
  width: 18px;
  height: 18px;
}
.carousel-dots {
  display: flex;
  gap: 0.5rem;
}
.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-rule);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background 0.25s ease, transform 0.25s ease;
}
.carousel-dot.active {
  background: var(--color-accent);
  transform: scale(1.25);
}

/* --- RESPONSIVE: TABLET --- */
@media (min-width: 768px) {
  .project-hero {
    grid-template-columns: 1fr auto;
  }
  .project-title {
    font-size: var(--text-5xl);
  }
  .stack-columns {
    grid-template-columns: repeat(3, 1fr);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .api-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- RESPONSIVE: DESKTOP --- */
@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .api-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --- RESPONSIVE: MOBILE --- */
@media (max-width: 767px) {
  .project-hero {
    text-align: center;
  }
  .project-hero-text {
    align-items: center;
  }
  .project-links {
    justify-content: center;
  }
  .project-title {
    font-size: var(--text-3xl);
  }
  .screenshot-item {
    width: 260px;
    aspect-ratio: 1320 / 2868;
  }
}