/* ==========================================================================
   GRID - Minimalist Editorial Design System
   Harmonized with Official GRID Geometric Thin-Line Identity & TANK Structure
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&family=Space+Grotesk:wght@300;400;500;600&display=swap');

:root {
  --bg-primary: #fcfcfd;
  --bg-surface: #f4f4f7;
  --bg-surface-elevated: #e9e9ee;
  --text-primary: #0a0a0c;
  --text-secondary: #585864;
  --text-muted: #9494a0;
  --border-thin: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.16);
  --accent: #000000;
  --accent-dim: #27272a;
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Space Grotesk', monospace;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --container-max: 1540px;
}


/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 300;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 3rem;
}

@media (max-width: 768px) {
  .container {
    padding: 0 1.5rem;
  }
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(252, 252, 253, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-thin);
  transition: background-color var(--transition-smooth), border-color var(--transition-smooth);
}


.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
}

.brand-logo-svg {
  height: 28px;
  width: auto;
  color: var(--text-primary);
  display: block;
  transition: transform var(--transition-fast);
}

.brand-logo:hover .brand-logo-svg {
  transform: scale(1.03);
}

.brand-subtext {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  color: var(--text-muted);
  text-transform: uppercase;
  border-left: 1px solid var(--border-thin);
  padding-left: 0.85rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: var(--accent);
}


/* ==========================================================================
   Watermark Background Logo Overlay
   ========================================================================== */
.watermark-overlay {
  position: absolute;
  pointer-events: none;
  z-index: 0;
  user-select: none;
  opacity: 0.035;
  color: var(--text-primary);
}


.watermark-about {
  right: -5%;
  top: 15%;
  width: 65vw;
  max-width: 900px;
}

.watermark-detail {
  left: 50%;
  transform: translateX(-50%);
  bottom: 2%;
  width: 70vw;
  max-width: 1000px;
}

/* ==========================================================================
   Vertical Year Navigation (Fixed Right Rail for Desktop)
   ========================================================================== */
.vertical-year-nav {
  position: fixed;
  right: 3rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 80;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1.5rem;
}

.vertical-year-nav::before {
  content: 'YEAR';
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: var(--text-muted);
  transform: rotate(-90deg);
  margin-bottom: 1.25rem;
  margin-right: -0.25rem;
}

.year-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.18em;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.2rem 0;
  transition: all var(--transition-fast);
}

.year-indicator {
  display: inline-block;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: all var(--transition-fast);
}

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

.year-link.active {
  color: var(--text-primary);
  font-weight: 500;
}

.year-link.active .year-indicator {
  background: var(--accent);
  width: 16px;
  height: 1px;
  border-radius: 0;
}

/* Mobile horizontal year filter */
.mobile-year-bar {
  display: none;
  overflow-x: auto;
  white-space: nowrap;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-thin);
  background: var(--bg-surface);
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.mobile-year-bar::-webkit-scrollbar {
  display: none;
}

.mobile-year-bar .year-pill {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  padding: 0.4rem 1rem;
  margin-right: 0.5rem;
  border-radius: 2px;
  background: var(--bg-surface-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border-thin);
}

.mobile-year-bar .year-pill.active {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
  font-weight: 500;
}

@media (max-width: 1024px) {
  .vertical-year-nav {
    display: none;
  }
  .mobile-year-bar {
    display: flex;
  }
}

/* ==========================================================================
   Works Grid Section (TANK & GRID Minimalist Layout)
   ========================================================================== */
.works-section {
  padding: 4rem 0 7rem;
  flex: 1;
  position: relative;
  z-index: 1;
}

.works-header {
  margin-bottom: 4rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-bottom: 1px solid var(--border-thin);
  padding-bottom: 1.75rem;
}

.works-title {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  line-height: 1.2;
  text-transform: uppercase;
}

.works-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.2em;
}

/* Grid Layout with Wide Spacing (Whitespace Focus) */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 5rem 4rem;
}

@media (max-width: 860px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }
  .works-title {
    font-size: 1.75rem;
  }
}

/* Project Card */
.project-card {
  display: flex;
  flex-direction: column;
  cursor: pointer;
  position: relative;
}

.card-media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-thin);
}

.card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1), filter 0.5s ease;
  filter: grayscale(12%);
}

.project-card:hover .card-image {
  transform: scale(1.025);
  filter: grayscale(0%);
}

.card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.65) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-fast);
  display: flex;
  align-items: flex-end;
  padding: 1.75rem;
}

.project-card:hover .card-overlay {
  opacity: 1;
}

.view-cta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: #ffffff;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.card-meta {
  margin-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

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

.project-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
}

.project-year {
  color: var(--text-muted);
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 6rem 2rem;
  border: 1px dashed var(--border-thin);
  border-radius: 2px;
}

/* ==========================================================================
   Project Detail Page (Multi-Image Stack & Structured Bottom Metadata)
   ========================================================================== */
.detail-page {
  padding: 3rem 0 7rem;
  flex: 1;
  position: relative;
  z-index: 1;
}

.detail-nav-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-thin);
}

.back-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

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

/* Large sequential photo stack */
.detail-gallery-stack {
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
  margin-bottom: 5.5rem;
}

.detail-gallery-item {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border-thin);
  overflow: hidden;
}

.detail-gallery-item img {
  width: 100%;
  height: auto;
  display: block;
}

.detail-gallery-caption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  padding: 0.85rem 1.25rem;
  border-top: 1px solid var(--border-thin);
  background: var(--bg-surface);
}

/* Structured Bottom Metadata & Narrative Container */
.detail-bottom-container {
  border-top: 1px solid var(--border-strong);
  padding-top: 4.5rem;
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 5rem;
  position: relative;
}

@media (max-width: 960px) {
  .detail-bottom-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

.detail-meta-list {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.meta-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  border-bottom: 1px solid var(--border-thin);
  padding-bottom: 1.25rem;
}

.meta-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.meta-value {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 0.04em;
}

.detail-narrative {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.detail-title {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.detail-body {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-secondary);
  text-align: justify;
  max-width: 820px;
}

.detail-body p {
  margin-bottom: 1.5rem;
}

.detail-pagination {
  margin-top: 6rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-thin);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pagination-btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.5rem;
  border: 1px solid var(--border-thin);
  border-radius: 2px;
}

.pagination-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
  background: var(--bg-surface);
}

/* ==========================================================================
   About Page
   ========================================================================== */
.about-page {
  padding: 4.5rem 0 7rem;
  flex: 1;
  position: relative;
  z-index: 1;
}

.about-hero {
  margin-bottom: 5.5rem;
  border-bottom: 1px solid var(--border-thin);
  padding-bottom: 3.5rem;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
  display: block;
}

.about-headline {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 400;
  letter-spacing: 0.06em;
  line-height: 1.25;
  text-transform: uppercase;
  max-width: 1100px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  margin-bottom: 6rem;
}

@media (max-width: 860px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }
}

.about-narrative p {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  text-align: justify;
}

.studio-address-box {
  margin-top: 2.5rem;
  padding: 1.75rem;
  border: 1px solid var(--border-thin);
  background: var(--bg-surface);
}

.address-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.address-text {
  font-size: 0.95rem;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

/* Disciplines list with subtle material accent on hover */
.services-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}

.service-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-thin);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: padding var(--transition-fast), border-color var(--transition-fast);
}

.service-item:first-child {
  border-top: 1px solid var(--border-thin);
}

.service-item:hover {
  padding-left: 0.75rem;
  border-bottom-color: var(--border-strong);
}

.service-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: 0.06em;
}

.service-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

/* Materiality Touch / Accent Grid */
.materiality-section {
  padding: 4.5rem 0;
  border-top: 1px solid var(--border-thin);
}

.material-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .material-cards-grid {
    grid-template-columns: 1fr;
  }
}

.material-card {
  padding: 2.25rem 2rem;
  background: #ffffff;
  border: 1px solid var(--border-thin);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.material-card:hover {
  background: #ffffff;
  border-color: var(--border-strong);
  transform: translateY(-3px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

.material-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.24em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.material-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.material-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Direct Contact Text Section */
.contact-section {
  padding: 4.5rem 0;
  border-top: 1px solid var(--border-thin);
}

.contact-text-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  margin-top: 2.5rem;
  padding-top: 0.5rem;
}

@media (max-width: 900px) {
  .contact-text-list {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }
}

.contact-text-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-text-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  text-transform: uppercase;
  display: block;
}

.contact-text-val {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  line-height: 1.4;
  word-break: break-word;
}

.contact-text-link {
  color: var(--text-primary);
  text-decoration: none;
  display: inline-block;
  transition: color var(--transition-fast);
  border-bottom: 1px solid transparent;
}

.contact-text-link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-thin);
  padding: 3.5rem 0;
  background: var(--bg-primary);
  margin-top: auto;
  position: relative;
  z-index: 1;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--text-primary);
}