/* ═══════════════════════════════════════════════════════════
   WalZetass Portfolio — projects.css
   Projects List + Project Detail
   Editorial · Large Showcases · Alternating Layout
   ═══════════════════════════════════════════════════════════ */

/* ── Page-level overrides ─────────────────────────────────── */
.page-projects #bg-canvas,
.page-detail   #bg-canvas {
  opacity: 0.25;
}

/* Active nav link */
.nav-active {
  color: var(--text) !important;
}
.nav-active::after {
  width: 100% !important;
}

/* ════════════════════════════════════════════════════════════
   PROJECTS PAGE
════════════════════════════════════════════════════════════ */

/* ── Page Hero ───────────────────────────────────────────── */
.page-hero {
  padding: 160px var(--pad-x) 80px;
  max-width: var(--max-w);
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
}

.page-hero-title {
  font-family: var(--font-serif);
  font-size: clamp(3.2rem, 7vw, 6.4rem);
  font-weight: 400;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--text);
  margin: 16px 0 28px;
}

.page-hero-title em {
  font-style: italic;
  color: var(--accent-2);
}

.page-hero-sub {
  font-size: clamp(0.92rem, 1.5vw, 1.05rem);
  color: var(--text-2);
  line-height: 1.75;
  max-width: 560px;
  margin-bottom: 40px;
}

.br-lg { display: block; }

.page-hero-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.meta-item {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--text-3);
}

.meta-num { color: var(--accent); }

.meta-sep {
  color: var(--border-strong);
  font-size: 0.8rem;
}

/* ── Filter Bar ──────────────────────────────────────────── */
.filter-bar {
  position: sticky;
  top: 72px;
  z-index: 50;
  background: rgba(17, 17, 16, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.filter-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.filter-inner::-webkit-scrollbar { display: none; }

.filter-btn {
  background: none;
  border: none;
  padding: 18px 20px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  cursor: pointer;
  transition: color 0.2s;
  white-space: nowrap;
  position: relative;
}

.filter-btn::after {
  content: '';
  position: absolute;
  bottom: 0; left: 20px; right: 20px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.3s var(--ease-out);
}

.filter-btn.active { color: var(--text); }
.filter-btn.active::after { transform: scaleX(1); }
.filter-btn:hover { color: var(--text-2); }

/* ── Showcase Articles ───────────────────────────────────── */
.showcase {
  border-bottom: 1px solid var(--border);
  padding: clamp(60px, 8vw, 120px) 0;
  transition: opacity 0.4s var(--ease-out);
}

.showcase.hidden {
  display: none;
}

.showcase-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: 1.1fr 0.95fr;
  gap: clamp(36px, 4.5vw, 68px);
  align-items: center;
}

/* Reversed layout — image on right */
.showcase--reverse .showcase-inner {
  grid-template-columns: 0.95fr 1.1fr;
}

.showcase--reverse .showcase-image {
  order: 2;
}

.showcase--reverse .showcase-content {
  order: 1;
}

/* ── Image Block ─────────────────────────────────────────── */
.showcase-image {
  position: relative;
}

.showcase-img-link {
  display: block;
}

.showcase-img-wrap {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  aspect-ratio: 16 / 10;
  background: var(--surface);
}

.showcase-img-wrap--phone {
  aspect-ratio: 9 / 16;
  max-width: 320px;
  margin: 0 auto;
}

.showcase-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  transition: transform 0.6s var(--ease-out), filter 0.4s;
  filter: brightness(0.92);
}

.showcase-img-wrap img.contain-fit {
  object-fit: contain;
  padding: 36px;
  background: var(--surface);
}

.showcase-img-link:hover .showcase-img-wrap img {
  transform: scale(1.03);
  filter: brightness(1);
}

.showcase-img-overlay {
  position: absolute;
  inset: 0;
  background: rgba(17, 17, 16, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s var(--ease-out);
}

.showcase-img-link:hover .showcase-img-overlay {
  opacity: 1;
}

.overlay-cta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-2);
  padding: 12px 24px;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
}

/* ── Reveal clip animation (image reveal) ────────────────── */
.reveal-clip {
  clip-path: inset(0 100% 0 0);
  transition: clip-path 0.9s var(--ease-out);
}

.reveal-clip.visible {
  clip-path: inset(0 0% 0 0);
}

/* ── Content Block ───────────────────────────────────────── */
.showcase-content {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.showcase-eyebrow {
  display: flex;
  align-items: center;
  gap: 16px;
}

.showcase-num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  color: var(--accent);
}

.showcase-cat {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--text-3);
}

.showcase-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--text);
}

.showcase-title em {
  font-style: italic;
  color: var(--accent-2);
}

.showcase-desc {
  font-size: clamp(0.9rem, 1.4vw, 1rem);
  color: var(--text-2);
  line-height: 1.8;
}

.showcase-stack {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.stack-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  padding-top: 4px;
  white-space: nowrap;
}

.stack-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.showcase-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

/* ── Projects CTA ────────────────────────────────────────── */
.projects-cta {
  padding: clamp(80px, 12vw, 160px) var(--pad-x);
  text-align: center;
}

.projects-cta-inner {
  max-width: 540px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.cta-title {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 5.5vw, 4.8rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text);
}

.cta-title em {
  font-style: italic;
  color: var(--accent-2);
}


/* ════════════════════════════════════════════════════════════
   PROJECT DETAIL PAGE
════════════════════════════════════════════════════════════ */

/* ── Read Progress Bar ───────────────────────────────────── */
.read-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: var(--accent);
  z-index: 200;
  transition: width 0.1s linear;
}

/* ── Detail Hero ─────────────────────────────────────────── */
.detail-hero {
  padding: 140px 0 60px;
  border-bottom: 1px solid var(--border);
}

.detail-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.detail-breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--text-3);
  margin-bottom: 48px;
}

.detail-breadcrumb a {
  color: var(--text-3);
  transition: color 0.2s;
}

.detail-breadcrumb a:hover { color: var(--text); }

.breadcrumb-sep { color: var(--border-strong); }

.detail-hero-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(32px, 4vw, 56px);
  align-items: flex-end;
}

.detail-num {
  font-family: var(--font-mono);
  font-size: clamp(4rem, 10vw, 9rem);
  font-weight: 700;
  color: var(--border-strong);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.04em;
  user-select: none;
}

.detail-title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 6.5vw, 5.6rem);
  font-weight: 400;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 20px;
}

.detail-title em {
  font-style: italic;
  color: var(--accent-2);
}

.detail-tagline {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--text-2);
  line-height: 1.7;
  max-width: 480px;
}

/* ── Meta Grid ───────────────────────────────────────────── */
.detail-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-2);
}

.detail-meta-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.detail-meta-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
}

.detail-meta-val {
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 400;
}

.detail-hero-links {
  display: flex;
  gap: 16px;
  align-items: center;
}

/* ── Cover Image ─────────────────────────────────────────── */
.detail-cover {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  margin-top: 60px;
  margin-bottom: 0;
}

.detail-cover img {
  width: 100%;
  border-radius: var(--radius);
  display: block;
  border: 1px solid var(--border);
}

.detail-cover img.contain-fit {
  object-fit: contain;
  max-height: 440px;
  background: var(--surface);
  padding: 48px;
  margin: 0 auto;
}

/* ── Stack Bar ───────────────────────────────────────────── */
.detail-stack-bar {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
  margin-top: 48px;
  background: var(--bg-2);
}

.detail-stack-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

/* ── Detail Sections ──────────────────────────────────────── */
.detail-section {
  padding: clamp(60px, 8vw, 100px) 0;
  border-bottom: 1px solid var(--border);
}

.detail-section--alt { background: var(--bg-2); }
.detail-section--dark { background: var(--bg); }

.detail-section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.detail-section-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 28px;
}

.detail-section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--text);
  margin-bottom: 8px;
}

.detail-section-title em {
  font-style: italic;
  color: var(--accent-2);
}

/* ── Two Column Layout ───────────────────────────────────── */
.detail-two-col {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: clamp(32px, 4vw, 56px);
  align-items: start;
  margin-top: 16px;
}

.detail-col-main {
  position: sticky;
  top: 140px;
}

.detail-body {
  font-size: clamp(0.9rem, 1.4vw, 1rem);
  color: var(--text-2);
  line-height: 1.85;
  margin-bottom: 20px;
}

.detail-body strong { color: var(--text); font-weight: 500; }
.detail-body:last-child { margin-bottom: 0; }

/* ── Challenge Block ─────────────────────────────────────── */
.challenge-block {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.challenge-item {
  display: flex;
  gap: 20px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.challenge-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.challenge-icon {
  color: var(--accent);
  font-size: 0.55rem;
  margin-top: 7px;
  flex-shrink: 0;
}

.challenge-item h4 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 8px;
}

.challenge-item p {
  font-size: 0.88rem;
  color: var(--text-2);
  line-height: 1.75;
}

/* ── Spread (two image layout) ──────────────────────────── */
.detail-spread {
  max-width: var(--max-w);
  margin: clamp(40px, 6vw, 80px) auto;
  padding: 0 var(--pad-x);
}

.detail-spread-inner {
  display: grid;
  grid-template-columns: 1.4fr 0.85fr;
  gap: 16px;
  align-items: stretch;
}

.spread-main,
.spread-aside {
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
}

.spread-main img,
.spread-aside img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
}

/* ── Full-width image ───────────────────────────────────── */
.detail-fullwidth {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(40px, 6vw, 80px) var(--pad-x);
}

.detail-fullwidth img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: block;
}

/* ── Results Grid ────────────────────────────────────────── */
.results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 48px;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.result-stat {
  padding: 40px 32px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background 0.2s;
}

.result-stat:hover { background: var(--bg-2); }

.result-num {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  font-weight: 400;
  color: var(--accent-2);
  letter-spacing: -0.03em;
  line-height: 1;
}

.result-label {
  font-size: 0.8rem;
  color: var(--text-3);
  line-height: 1.5;
}

/* ── Gallery ─────────────────────────────────────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 40px;
}

.gallery-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: transform 0.4s var(--ease-out), border-color 0.2s;
}

.gallery-item:hover img {
  transform: scale(1.02);
  border-color: var(--border-strong);
}

.gallery-caption {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--text-3);
}

/* ── Lightbox ────────────────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(10, 10, 10, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.lightbox.open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  object-fit: contain;
}

.lightbox-close {
  position: absolute;
  top: 24px; right: 24px;
  font-size: 1.5rem;
  color: var(--text-2);
  cursor: pointer;
  background: none;
  border: none;
  line-height: 1;
  padding: 8px;
  transition: color 0.2s;
}

.lightbox-close:hover { color: var(--text); }

/* ── Next Project ────────────────────────────────────────── */
.next-project {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.next-project-link {
  display: block;
  transition: background 0.3s;
}

.next-project-link:hover {
  background: var(--bg-2);
}

.next-project-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(60px, 8vw, 100px) var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.next-title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--text);
  flex: 1;
}

.next-title em {
  font-style: italic;
  color: var(--accent-2);
}

.next-arrow {
  font-size: clamp(2rem, 4vw, 3.5rem);
  color: var(--text-3);
  transition: color 0.2s, transform 0.3s var(--ease-out);
  flex-shrink: 0;
}

.next-project-link:hover .next-arrow {
  color: var(--accent);
  transform: translateX(12px);
}

/* ── Floating TOC (detail page) ──────────────────────────── */
.detail-toc {
  position: fixed;
  right: 32px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toc-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--border-strong);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  position: relative;
}

.toc-dot.active { background: var(--accent); transform: scale(1.5); }

.toc-dot:hover { background: var(--text-3); }

.toc-dot::before {
  content: attr(data-label);
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  color: var(--text-3);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.toc-dot:hover::before { opacity: 1; }

/* ════════════════════════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════════════════════════ */

@media (max-width: 1100px) {
  .results-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-toc { display: none; }
}

@media (max-width: 900px) {
  :root {
    --pad-x: 24px;
  }

  .showcase-inner,
  .showcase--reverse .showcase-inner {
    grid-template-columns: 1fr;
  }

  .showcase--reverse .showcase-image { order: 0; }
  .showcase--reverse .showcase-content { order: 0; }

  .detail-hero-layout {
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: flex-start;
  }

  .detail-two-col {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .detail-col-main { position: static; }

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

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

  .next-project-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }

  .br-lg { display: none; }
  .page-hero { padding-top: 110px; }
}

@media (max-width: 640px) {
  :root {
    --pad-x: 20px;
  }

  .page-hero {
    padding-top: 96px;
    padding-bottom: 36px;
  }
  .page-hero-title {
    font-size: clamp(2.3rem, 9vw, 3.4rem);
    line-height: 1.05;
    margin-bottom: 18px;
  }
  .page-hero-sub {
    font-size: 0.98rem;
    margin-bottom: 24px;
  }

  .gallery-grid { grid-template-columns: 1fr; }
  .results-grid { grid-template-columns: 1fr; gap: 16px; }
  .detail-meta-grid { grid-template-columns: 1fr; }
  .showcase-img-wrap--phone { max-width: 240px; margin: 0 auto; }
  .filter-inner {
    gap: 0;
    -webkit-overflow-scrolling: touch;
  }
  .filter-btn {
    padding: 14px 16px;
    font-size: 0.65rem;
  }
  .next-title {
    font-size: clamp(1.8rem, 7.5vw, 2.5rem);
  }
}

@media (max-width: 360px) {
  :root {
    --pad-x: 16px;
  }
  .page-hero-title {
    font-size: 2.1rem;
  }
  .filter-btn {
    padding: 12px 12px;
  }
}