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

html {
  scroll-behavior: smooth;
  overflow: hidden;
  height: 100%;
}

body {
  font-family: 'Inter', sans-serif;
  background: #000;
  color: #fff;
  overflow-x: hidden;
  overflow-y: scroll;
  height: 100%;
  overscroll-behavior: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  z-index: 100;
  transition: transform 0.4s ease, opacity 0.4s ease;
  background: linear-gradient(to bottom, rgba(0,0,0,0.18) 0%, transparent 100%);
}

.header-hidden {
  transform: translateY(-100%);
  opacity: 0;
}

.logo {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 40px;
}

.header-tagline {
  font-size: 14px;
  font-weight: 400;
  opacity: 0.8;
}

.menu-btn {
  background: none;
  border: none;
  color: #fff;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.3s;
}

/* ===== Language Toggle ===== */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 5px;
}

.lang-btn {
  background: none;
  border: none;
  color: #fff;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  cursor: pointer;
  opacity: 0.35;
  transition: opacity 0.2s;
  padding: 0;
}

.lang-btn.active {
  opacity: 1;
}

.lang-btn:hover {
  opacity: 0.75;
}

.lang-sep {
  color: #fff;
  opacity: 0.25;
  font-size: 11px;
  line-height: 1;
}

.menu-btn:hover {
  opacity: 0.6;
}

/* ===== Menu Overlay ===== */
.menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 50;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 20px;
  background: rgba(0, 0, 0, 0.85);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

.menu-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.menu-link {
  font-size: clamp(32px, 6vw, 64px);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.3s ease, transform 0.3s ease;
}

.menu-link:hover {
  color: #fff;
  transform: scale(1.05);
}

/* Hide project list when menu is open */
body.menu-active .project-list {
  opacity: 0;
  pointer-events: none;
}

/* Hide footer scroll when menu is open */
body.menu-active {
  overflow: hidden;
}

.project-list {
  transition: opacity 0.4s ease;
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  overflow: hidden;
}

/* GIF Background */
.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-gif {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.8s ease;
  pointer-events: none;
  filter: grayscale(100%);
}

.hero-gif.active {
  opacity: 1;
}

/* Gradient overlay for readability over full-screen GIF */
.hero-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    linear-gradient(to bottom, transparent 60%, rgba(0,0,0,0.6) 100%),
    linear-gradient(to top, transparent 85%, rgba(0,0,0,0.3) 100%);
  z-index: 2;
  transition: background 0.5s ease;
}

/* Gradient centered when menu is open */
body.menu-active .hero-bg::after {
  background:
    radial-gradient(circle at center, rgba(0,0,0,0.75) 0%, transparent 70%),
    linear-gradient(to bottom, rgba(0,0,0,0.3) 0%, transparent 20%, transparent 80%, rgba(0,0,0,0.3) 100%);
}

/* Project List */
.project-list {
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 80px;
  padding-right: 15%;
}

.project-item {
  font-size: clamp(18px, 2.2vw, 28px);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  transition: color 0.4s ease, transform 0.3s ease;
  cursor: pointer;
  display: block;
  text-shadow: 0 0 20px rgba(0, 0, 0, 0.8), 0 0 40px rgba(0, 0, 0, 0.5);
}

.project-item.active,
.project-item:hover {
  color: #fff;
}

.project-item:hover {
  transform: translateX(-4px);
}

/* ===== Footer ===== */
.footer {
  width: 100%;
  padding: 80px 40px 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 120px;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.footer-name {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-nav a {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: opacity 0.3s;
}

.footer-nav a:hover {
  opacity: 0.6;
}

.footer-right {
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: flex-end;
}

.footer-cta {
  font-size: 14px;
  font-weight: 400;
  opacity: 0.6;
  line-height: 1.6;
}

.footer-email {
  font-size: clamp(18px, 3vw, 32px);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: underline;
  text-underline-offset: 6px;
  transition: opacity 0.3s;
}

.footer-email:hover {
  opacity: 0.7;
}

/* Footer Bottom */
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-socials {
  display: flex;
  gap: 20px;
}

.footer-socials a {
  font-size: 13px;
  font-weight: 400;
  opacity: 0.7;
  transition: opacity 0.3s;
}

.footer-socials a:hover {
  opacity: 1;
}

.footer-copy {
  font-size: 13px;
  opacity: 0.5;
}

.footer-rights {
  font-size: 13px;
  opacity: 0.5;
}

/* ===== Projects Page ===== */
.projects-hero {
  width: 100%;
  height: 60vh;
  display: flex;
  align-items: flex-end;
  padding: 0 0 40px 0;
}

.projects-title {
  font-size: 19.5vw;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.9;
  text-transform: uppercase;
  width: 100%;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 40px;
}

.project-card {
  display: block;
  overflow: hidden;
}

.project-card-img {
  width: 100%;
  aspect-ratio: 4 / 5;
  overflow: hidden;
}

.project-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
  transition: transform 0.6s ease, filter 0.6s ease;
}

.project-card:hover .project-card-img img {
  transform: scale(1.05);
  filter: grayscale(0%);
}

.project-card-label {
  margin-top: 14px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

.project-card-label strong {
  color: #fff;
  font-weight: 600;
}

/* ===== Category Listing Page ===== */
.category-hero {
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 160px 40px 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.category-title {
  font-size: clamp(14px, 1.4vw, 18px);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.5;
}

.category-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 40px 120px;
}

.category-list-item {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 14px;
  padding: 18px 0;
  transition: opacity 0.3s ease;
  cursor: pointer;
}

.category-list:hover .category-list-item {
  opacity: 0.3;
}

.category-list:hover .category-list-item:hover {
  opacity: 1;
}

.category-list-name {
  font-size: clamp(20px, 3.2vw, 42px);
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  text-align: center;
  transition: font-size 0.3s ease, transform 0.3s ease;
}

.category-list-item:hover .category-list-name {
  transform: scale(1.12);
}

.category-list-year {
  font-size: clamp(10px, 0.8vw, 12px);
  font-weight: 400;
  opacity: 0;
  flex-shrink: 0;
  transition: opacity 0.3s ease;
}

.category-list-item:hover .category-list-year {
  opacity: 0.4;
}

.category-preview {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 160px;
  height: 200px;
  z-index: 40;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
  overflow: hidden;
}

.category-preview.visible {
  opacity: 1;
}

.category-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== Project Detail Page ===== */
.project-detail-hero {
  width: 100%;
  display: flex;
  align-items: flex-end;
  padding: 120px 40px 40px;
}

.project-detail-title-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.project-detail-title {
  font-size: clamp(16px, 1.8vw, 24px);
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.project-detail-subtitle {
  font-size: clamp(13px, 1.2vw, 16px);
  font-weight: 400;
  letter-spacing: 0.04em;
  opacity: 0.5;
  text-transform: uppercase;
}

/* Metadata */
.project-detail-meta {
  display: flex;
  justify-content: space-between;
  padding: 30px 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meta-label {
  font-size: 13px;
  font-weight: 600;
  opacity: 0.5;
}

.meta-value {
  font-size: 14px;
  font-weight: 400;
}

/* Gallery */
.project-detail-gallery {
  padding: 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.gallery-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.gallery-duo-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Info Section */
.project-detail-info {
  padding: 80px 40px;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 30px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.info-row:first-child {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.info-label {
  font-size: 16px;
  font-weight: 600;
  flex-shrink: 0;
}

.info-value {
  font-size: 14px;
  font-weight: 400;
  opacity: 0.7;
  text-align: right;
  max-width: 50%;
  line-height: 1.6;
}

/* Project Navigation */
.project-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 100px 40px;
}

.project-nav-link {
  font-size: clamp(28px, 5vw, 64px);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  opacity: 0.5;
  transition: opacity 0.3s ease;
}

.project-nav-link:hover {
  opacity: 1;
}

/* ===== Contact Page ===== */
.contact-page {
  display: flex;
  min-height: 100vh;
  padding-top: 80px;
}

.contact-left {
  width: 45%;
  position: relative;
}

.contact-photo {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
}

.contact-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: grayscale(100%);
}

.contact-right {
  width: 55%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 60px;
  gap: 40px;
}

.contact-title {
  font-size: clamp(14px, 1.4vw, 18px);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.5;
}

.contact-description {
  font-size: clamp(16px, 1.6vw, 20px);
  font-weight: 400;
  line-height: 1.6;
  opacity: 0.7;
  max-width: 480px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.contact-link-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: opacity 0.3s ease;
}

.contact-link-item:first-child {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-link-item:hover {
  opacity: 0.6;
}

.contact-link-label {
  font-size: 16px;
  font-weight: 600;
}

.contact-link-value {
  font-size: 14px;
  font-weight: 400;
  opacity: 0.7;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .header {
    padding: 16px 20px;
  }

  .header-tagline {
    display: none;
  }

  .hero {
    flex-direction: column;
    justify-content: flex-end;
    align-items: flex-start;
  }

  .hero-gif {
    width: 100%;
    height: 60%;
    top: 0;
  }

  .hero-bg::after {
    background:
      linear-gradient(to bottom, transparent 30%, #000 70%);
  }

  .project-list {
    padding: 0 20px 60px;
    gap: 6px;
  }

  .project-item {
    font-size: 18px;
  }

  .footer {
    padding: 40px 20px 20px;
  }

  .footer-top {
    flex-direction: column;
    gap: 40px;
    margin-bottom: 60px;
  }

  .footer-right {
    text-align: left;
    align-items: flex-start;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
  }

  .footer-socials {
    flex-wrap: wrap;
  }

  /* Projects page responsive */
  .projects-hero {
    height: 40vh;
    padding: 0 20px 20px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    padding: 20px;
  }

  /* Project detail responsive */
  .project-detail-hero {
    padding: 100px 20px 20px;
  }

  .project-detail-meta {
    flex-direction: column;
    gap: 16px;
    padding: 20px;
  }

  .project-detail-gallery {
    padding: 10px 20px;
  }

  .gallery-duo {
    grid-template-columns: 1fr;
  }

  .project-detail-info {
    padding: 40px 20px;
  }

  .info-row {
    flex-direction: column;
    gap: 8px;
  }

  .info-value {
    text-align: left;
    max-width: 100%;
  }

  .project-nav {
    padding: 60px 20px;
  }

  /* Category listing responsive */
  .category-hero {
    padding: 100px 20px 40px;
  }

  .category-list {
    padding: 0 20px 80px;
  }

  .category-list-item {
    padding: 28px 0;
  }

  .category-preview {
    display: none;
  }

  /* Contact page responsive */
  .contact-page {
    flex-direction: column;
    padding-top: 0;
  }

  .contact-left {
    width: 100%;
  }

  .contact-photo {
    position: relative;
    height: 60vh;
  }

  .contact-right {
    width: 100%;
    padding: 40px 20px;
  }
}