*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #111;
  --white: #fff;
  --gray: #888;
  --light: #f5f5f5;
  --gap: 2rem;
  --max: 1200px;
}

html { font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--black);
  background: var(--white);
  line-height: 1.6;
}

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

/* ── Header ── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid #e0e0e0;
  padding: 1rem var(--gap);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.logo img {
  height: 36px;
  width: auto;
  display: block;
}

.logo-name {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

nav {
  display: flex;
  align-items: center;
}

nav a {
  margin-left: 2rem;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray);
  transition: color 0.2s;
  display: inline-flex;
  align-items: center;
}

nav a:hover, nav a.active { color: var(--black); }

.nav-email {
  display: inline-flex;
  align-items: center;
}

/* ── Portfolio Grid ── */
.grid-page { padding: 3rem var(--gap); max-width: var(--max); margin: 0 auto; }

.category-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.filter-btn {
  background: none;
  border: 1px solid #ccc;
  border-radius: 2px;
  padding: 0.35rem 0.9rem;
  font-size: 0.78rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover, .filter-btn.active {
  background: var(--black);
  border-color: var(--black);
  color: var(--white);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--gap);
}

.card {
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: opacity 0.2s;
}

.card:hover { opacity: 0.85; }

.card-thumb {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
  background: var(--light);
  display: block;
}

.card-body {
  padding: 0.9rem 0 0;
}

.card-category {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 0.25rem;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--gray);
}

/* ── Project Page ── */
.project-page {
  max-width: 860px;
  margin: 0 auto;
  padding: 3rem var(--gap) 5rem;
}

.back-link {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 2.5rem;
  transition: color 0.2s;
}

.back-link:hover { color: var(--black); }
.back-link::before { content: "← "; }

.project-category {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 0.4rem;
}

.project-title {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.project-subtitle {
  font-size: 1rem;
  color: var(--gray);
  margin-bottom: 2rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 2.5rem;
}

.tag {
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding: 0.2rem 0.6rem;
  color: var(--gray);
}

/* ── Video embed ── */
.video-wrap {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  margin: 2rem 0;
  background: #000;
}

.video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ── Image gallery ── */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.75rem;
  margin: 2rem 0;
}

.gallery img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  display: block;
  cursor: zoom-in;
  transition: opacity 0.2s;
}

.gallery img:hover { opacity: 0.88; }

/* ── Lightbox ── */
#lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

#lightbox.open { display: flex; }

#lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
}

#lightbox-close {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  background: none;
  border: none;
}

/* ── Project body text ── */
.project-body { line-height: 1.75; }

.project-body p { margin-bottom: 1.2rem; }

.project-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 2rem 0 0.5rem;
}

.project-body h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.4rem;
}

/* ── Project Nav (sticky footer) ── */
.project-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--white);
  border-top: 1px solid #e0e0e0;
  padding: 0.9rem 3rem;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.project-nav.visible { transform: translateY(0); }

.project-nav a {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray);
  transition: color 0.2s;
  max-width: 42%;
}

.project-nav a:hover { color: var(--black); }

.project-nav .nav-prev::before { content: "← "; }
.project-nav .nav-next::after  { content: " →"; }

.project-nav .nav-label {
  display: block;
  font-size: 0.72rem;
  color: #bbb;
  margin-bottom: 0.2rem;
  letter-spacing: 0.1em;
}

.project-nav .nav-next {
  text-align: right;
  margin-left: auto;
}

/* ── Before/After Reveal ── */
.reveal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.reveal {
  position: relative;
  overflow: hidden;
  cursor: ew-resize;
  user-select: none;
  line-height: 0;
}

.reveal-after,
.reveal-before {
  position: absolute;
  inset: 0;
}

.reveal-after { z-index: 1; }

.reveal-before {
  z-index: 2;
  clip-path: inset(0 50% 0 0);
}

/* size the container to the image */
.reveal-after img,
.reveal-before img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  pointer-events: none;
}

/* invisible spacer so .reveal has height */
.reveal-spacer {
  width: 100%;
  display: block;
  visibility: hidden;
}

.reveal-handle {
  position: absolute;
  top: 0;
  left: 50%;
  z-index: 3;
  width: 2px;
  height: 100%;
  background: #fff;
  transform: translateX(-50%);
  pointer-events: none;
}

.reveal-handle::after {
  content: "↔";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  color: #111;
  border-radius: 50%;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

.reveal-labels {
  position: absolute;
  bottom: 0.6rem;
  left: 0;
  right: 0;
  z-index: 4;
  display: flex;
  justify-content: space-between;
  padding: 0 0.75rem;
  pointer-events: none;
}

.reveal-labels span {
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(0,0,0,0.45);
  padding: 0.15rem 0.45rem;
  border-radius: 2px;
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .project-title { font-size: 1.6rem; }
  .grid { grid-template-columns: 1fr; }
  nav a { margin-left: 1rem; }

  .project-nav {
    padding: 0.75rem 1.25rem;
  }

  .project-nav .nav-label {
    display: none;
  }

  .project-nav a {
    font-size: 0.72rem;
    max-width: 44%;
  }
}