/* ============================================
   Project Detail Page — Styles
   Inherits design system from style.css
   ============================================ */

/* ── Back Navigation ── */
.detail-back {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 100px 24px 0;
}

.detail-back a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-normal);
}

.detail-back a:hover {
  color: var(--accent);
  gap: 12px;
}

/* ── Detail Hero ── */
.detail-hero {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 0;
}

.detail-hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.detail-hero-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.detail-category {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.detail-category.desktop { color: var(--accent); }
.detail-category.web { color: var(--secondary); }
.detail-category.mobile { color: #22c55e; }

.detail-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -0.5px;
}

.detail-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.detail-hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: var(--glass-border);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(34, 211, 238, 0.1), var(--bg-secondary));
}

.detail-hero-image img {
  width: 100%;
  display: block;
}

/* ── AI Note ── */
.detail-ai-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-style: italic;
  color: var(--text-muted);
  padding: 10px 16px;
  background: rgba(99, 102, 241, 0.06);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
}

/* ── Stats Row ── */
.detail-stats {
  max-width: var(--container-width);
  margin: 48px auto 0;
  padding: var(--container-padding);
}

.detail-stats-grid {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.detail-stat-card {
  flex: 1;
  min-width: 120px;
  padding: 24px;
  text-align: center;
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: var(--glass-blur);
}

.detail-stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 6px;
}

.detail-stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ── Video Section ── */
.detail-video {
  max-width: var(--container-width);
  margin: 60px auto 0;
  padding: var(--container-padding);
}

.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: var(--glass-border);
  background: var(--bg-secondary);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-link-row {
  display: flex;
  justify-content: center;
  margin-top: 18px;
}

.video-external-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 48px;
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  text-align: center;
}

.video-external-link a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 600;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 15px var(--accent-glow);
}

.video-external-link a:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--accent-glow);
}

/* ── Features Section ── */
.detail-features {
  max-width: var(--container-width);
  margin: 60px auto 0;
  padding: var(--container-padding);
}

.detail-section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 28px;
}

.detail-section-title::before {
  content: '';
  width: 24px;
  height: 3px;
  background: var(--accent);
  border-radius: 3px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.5;
  transition: all var(--transition-normal);
}

.feature-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.feature-item svg {
  flex-shrink: 0;
  color: var(--accent);
  margin-top: 2px;
}

/* ── Screenshots Gallery ── */
/* Case Study */
.detail-case-study {
  max-width: var(--container-width);
  margin: 64px auto 0;
  padding: var(--container-padding);
}

.case-study-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.case-study-card {
  min-height: 100%;
  padding: 22px;
  background: rgba(255, 255, 255, 0.045);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  line-height: 1.7;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.16);
}

.case-study-card.highlighted {
  background: rgba(99, 102, 241, 0.11);
  border-color: rgba(99, 102, 241, 0.38);
}

.case-study-label {
  display: block;
  margin-bottom: 10px;
  color: var(--secondary);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.case-study-lists {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.case-study-list {
  padding: 22px;
  background: rgba(255, 255, 255, 0.04);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.14);
}

.case-study-list h3 {
  margin-bottom: 14px;
  color: var(--text-primary);
  font-size: 1rem;
}

.case-study-list ul {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.case-study-list li {
  position: relative;
  padding-left: 18px;
  color: var(--text-secondary);
  line-height: 1.55;
  font-size: 0.92rem;
}

.case-study-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.case-study-list.results li::before {
  background: #22c55e;
}

.detail-screenshots {
  max-width: var(--container-width);
  margin: 60px auto 0;
  padding: var(--container-padding);
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.screenshot-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: var(--glass-border);
  cursor: pointer;
  transition: all var(--transition-normal);
  aspect-ratio: 16 / 10;
  background: var(--bg-secondary);
}

.screenshot-item:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
}

.screenshot-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.screenshot-item:hover img {
  transform: scale(1.05);
}

/* Version History */
.detail-versions {
  max-width: var(--container-width);
  margin: 68px auto 0;
  padding: var(--container-padding);
}

.detail-section-heading {
  margin-bottom: 28px;
}

.detail-section-heading .detail-section-title {
  margin-bottom: 10px;
}

.detail-section-heading p {
  max-width: 720px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.version-timeline {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.version-card {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 14px;
}

.version-rail {
  position: relative;
  display: flex;
  justify-content: center;
}

.version-rail::before {
  content: '';
  position: absolute;
  top: 18px;
  bottom: -20px;
  width: 1px;
  background: var(--border);
}

.version-card:last-child .version-rail::before {
  display: none;
}

.version-rail span {
  position: relative;
  z-index: 1;
  width: 15px;
  height: 15px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 3px solid var(--border-hover);
}

.version-card.current .version-rail span {
  border-color: var(--accent);
  box-shadow: 0 0 0 6px rgba(99, 102, 241, 0.12);
}

.version-card-body {
  padding: 24px;
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: var(--glass-blur);
}

.version-card.current .version-card-body {
  border-color: rgba(99, 102, 241, 0.32);
  background: rgba(99, 102, 241, 0.055);
}

.version-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 12px;
}

.version-head h3 {
  color: var(--text-primary);
  font-size: 1.08rem;
  line-height: 1.35;
  margin-top: 6px;
}

.version-head time {
  flex-shrink: 0;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.version-meta-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.version-label {
  color: var(--secondary);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.version-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  background: rgba(34, 197, 94, 0.12);
  color: #22c55e;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.version-summary {
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 16px;
}

.version-changes {
  display: grid;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.version-changes li {
  position: relative;
  padding-left: 18px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.55;
}

.version-changes li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.version-media-actions {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.version-video {
  width: 100%;
}

.version-video .video-container {
  border-radius: var(--radius-md);
  margin-bottom: 12px;
}

.version-screenshots {
  margin-top: 18px;
}

.version-screenshots-grid {
  grid-template-columns: repeat(2, 1fr);
}

/* ── Lightbox ── */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  backdrop-filter: blur(8px);
}

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

.lightbox-overlay img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  transform: scale(0.9);
  transition: transform var(--transition-normal);
}

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

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  border: none;
  transition: background var(--transition-fast);
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
}

.lightbox-nav:hover { background: rgba(255, 255, 255, 0.2); }
.lightbox-prev { left: 24px; }
.lightbox-next { right: 24px; }

/* ── Tech Stack ── */
.detail-tech {
  max-width: var(--container-width);
  margin: 60px auto 0;
  padding: var(--container-padding);
}

.tech-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tech-chips .chip {
  font-size: 0.85rem;
  padding: 6px 18px;
}

/* ── Prev / Next Navigation ── */
.detail-nav {
  max-width: var(--container-width);
  margin: 80px auto 0;
  padding: var(--container-padding);
}

.detail-nav-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.detail-nav-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px;
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  text-decoration: none;
}

.detail-nav-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

.detail-nav-card.next {
  text-align: right;
}

.detail-nav-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.detail-nav-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ── Detail Loading ── */
.detail-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  flex-direction: column;
  gap: 16px;
}

.detail-loading .spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.detail-loading p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ── 404 State ── */
.detail-not-found {
  text-align: center;
  padding: 120px 24px;
}

.detail-not-found h2 {
  font-size: 1.6rem;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.detail-not-found p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ── Section Spacing ── */
.detail-section-divider {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.detail-section-divider .divider-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 60px 0 0;
}

/* ── Responsive — Tablet ── */
@media (max-width: 1024px) {
  .detail-hero-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .case-study-grid,
  .case-study-lists {
    grid-template-columns: 1fr;
  }

  .screenshots-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .version-screenshots-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ── Responsive — Mobile ── */
@media (max-width: 768px) {
  .detail-back {
    padding-top: 80px;
  }

  .detail-hero {
    padding-top: 24px;
  }

  .detail-actions {
    flex-direction: column;
  }

  .detail-actions .btn {
    width: 100%;
  }

  .detail-stats-grid {
    gap: 12px;
  }

  .detail-stat-card {
    min-width: 0;
    padding: 18px;
  }

  .detail-stat-value {
    font-size: 1.4rem;
  }

  .screenshots-grid {
    grid-template-columns: 1fr;
  }

  .version-card {
    grid-template-columns: 1fr;
  }

  .version-rail {
    display: none;
  }

  .version-card-body {
    padding: 20px;
  }

  .version-head {
    flex-direction: column;
    gap: 8px;
  }

  .version-screenshots-grid {
    grid-template-columns: 1fr;
  }

  .detail-nav-grid {
    grid-template-columns: 1fr;
  }

  .lightbox-nav { display: none; }
}

/* ============================================
   1.9.3 Project Detail Refresh
   ============================================ */

.detail-back,
.detail-hero,
.detail-stats,
.detail-video,
.detail-features,
.detail-case-study,
.detail-screenshots,
.detail-versions,
.detail-tech,
.detail-nav {
  max-width: 1180px;
}

.detail-back {
  padding-top: 112px;
}

.detail-hero {
  padding-top: 28px;
}

.detail-hero-inner {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.018)),
    rgba(8, 9, 22, 0.66);
  box-shadow: 0 28px 86px rgba(0, 0, 0, 0.26);
}

.detail-category {
  width: fit-content;
  padding: 6px 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.045);
}

.detail-title {
  font-size: clamp(2rem, 4.4vw, 3.5rem);
}

.detail-desc {
  max-width: 720px;
}

.detail-hero-image {
  max-height: 520px;
  box-shadow: 0 28px 76px rgba(0, 0, 0, 0.32);
}

.detail-hero-image img {
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.detail-actions .btn {
  border-radius: 12px;
}

.detail-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.detail-stat-card,
.feature-item,
.case-study-card,
.case-study-list,
.version-card-body,
.detail-nav-card {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.052), rgba(255, 255, 255, 0.018)),
    rgba(8, 9, 22, 0.66);
  border-color: rgba(255, 255, 255, 0.11);
}

.features-grid {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
}

.feature-item {
  min-height: 64px;
}

.case-study-card,
.case-study-list {
  position: relative;
  overflow: hidden;
}

.case-study-card::before,
.case-study-list::before,
.version-card-body::before {
  content: '';
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, rgba(99, 102, 241, 0.82), rgba(34, 211, 238, 0.56));
  opacity: 0.72;
}

.version-card-body {
  position: relative;
  overflow: hidden;
}

.screenshots-grid {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
}

.screenshot-item {
  border-color: rgba(255, 255, 255, 0.11);
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.22);
}

.screenshot-item img {
  object-position: top center;
}

.version-card {
  grid-template-columns: 44px minmax(0, 1fr);
}

.version-card-body {
  box-shadow: 0 18px 52px rgba(0, 0, 0, 0.22);
}

.detail-nav-card {
  min-height: 112px;
  justify-content: center;
}

html[dir="rtl"] .detail-hero-content,
html[dir="rtl"] .detail-section-heading,
html[dir="rtl"] .case-study-card,
html[dir="rtl"] .case-study-list,
html[dir="rtl"] .version-card-body {
  text-align: right;
}

html[dir="rtl"] .detail-nav-card.next {
  text-align: left;
}

@media (max-width: 1024px) {
  .detail-hero-inner {
    padding: 22px;
  }

  .detail-hero-image {
    max-height: none;
  }
}

@media (max-width: 768px) {
  .detail-back {
    padding-top: 92px;
  }

  .detail-hero-inner {
    padding: 18px;
    border-radius: 18px;
  }

  .detail-title {
    font-size: clamp(1.9rem, 10vw, 2.55rem);
  }

  .detail-stats,
  .detail-video,
  .detail-features,
  .detail-case-study,
  .detail-screenshots,
  .detail-versions,
  .detail-tech,
  .detail-nav {
    margin-top: 42px;
  }

  .version-card {
    grid-template-columns: 1fr;
  }
}