/* ============================================================
   ONEFORPLUS PARTNERSHIP — minimal portfolio (big.dk inspired)
   ============================================================ */

:root {
  --black: #111;
  --white: #fff;
  --grey: #888;
  --line: #e5e5e5;
  --header-h: 72px;
  --filter-h: 44px;
  --gap: 3px;
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: var(--white);
  color: var(--black);
  -webkit-font-smoothing: antialiased;
}

body.locked { overflow: hidden; }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; background: none; border: 0; cursor: pointer; color: inherit; }

/* ============ HEADER ============ */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  background: var(--white);
  z-index: 50;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 30px;
  height: 30px;
  fill: var(--black);
  flex: none;
}

.brand-word {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.32em;
  line-height: 1.5;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  gap: 32px;
}

.site-nav a {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--grey);
  transition: color 0.2s var(--ease);
}

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

/* ============ FILTER BAR ============ */

.filter-bar {
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  height: var(--filter-h);
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 0 28px;
  background: var(--white);
  z-index: 49;
}

.filter-bar button {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--grey);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.filter-bar button:hover { color: var(--black); }

.filter-bar button.active {
  color: var(--black);
  border-bottom-color: var(--black);
}

/* ============ GRID ============ */

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  padding: calc(var(--header-h) + var(--filter-h)) var(--gap) var(--gap);
  min-height: 100vh;
  background: var(--white);
}

.tile {
  position: relative;
  display: block;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #f2f2f2;
}

.tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(1);
  transform: scale(1.001);
  transition: filter 0.45s var(--ease), transform 0.9s var(--ease);
}

.tile:hover img {
  filter: grayscale(0);
  transform: scale(1.045);
}

.tile-label {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 36px 20px 16px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.55));
  color: var(--white);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
  pointer-events: none;
}

.tile:hover .tile-label {
  opacity: 1;
  transform: translateY(0);
}

.tile-label .t-code {
  display: block;
  font-size: 9px;
  letter-spacing: 0.3em;
  opacity: 0.7;
  margin-bottom: 4px;
}

.tile-label .t-name {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.tile.hidden { display: none; }

/* Studio tile (black, logo) */

.tile-studio {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 22px;
  background: var(--black);
  color: var(--white);
}

.tile-studio svg {
  width: 56px;
  height: 56px;
  fill: var(--white);
  transition: transform 0.6s var(--ease);
}

.tile-studio:hover svg { transform: rotate(90deg); }

.tile-studio span {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  text-align: center;
  line-height: 1.8;
}

/* ============ OVERLAYS (shared) ============ */

.overlay {
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--ease), visibility 0.3s var(--ease);
  overflow-y: auto;
}

.overlay.open {
  opacity: 1;
  visibility: visible;
}

.overlay-close {
  position: fixed;
  top: 16px;
  right: 22px;
  font-size: 34px;
  font-weight: 300;
  line-height: 1;
  z-index: 110;
  color: var(--black);
  transition: transform 0.3s var(--ease);
}

.overlay-close:hover { transform: rotate(90deg); }

/* ============ PROJECT OVERLAY ============ */

.project-overlay {
  display: flex;
  flex-direction: column;
}

.project-stage {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 72px 16px;
}

.stage-figure {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stage-figure img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}

.stage-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 26px;
  padding: 18px;
  color: var(--black);
  opacity: 0.45;
  transition: opacity 0.2s var(--ease);
  z-index: 105;
}

.stage-arrow:hover { opacity: 1; }
.stage-arrow.prev { left: 14px; }
.stage-arrow.next { right: 14px; }

.project-info {
  flex: none;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  padding: 18px 72px 6px;
}

.project-meta h1 {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.project-meta p {
  font-size: 12px;
  line-height: 1.7;
  color: var(--grey);
  max-width: 520px;
}

.project-facts {
  display: flex;
  gap: 36px;
  flex: none;
}

.project-facts div { min-width: 70px; }

.project-facts span {
  display: block;
  font-size: 9px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 5px;
}

.project-facts strong {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.thumb-strip {
  flex: none;
  display: flex;
  gap: 4px;
  padding: 10px 72px 18px;
  overflow-x: auto;
}

.thumb-strip img {
  height: 52px;
  width: auto;
  display: block;
  cursor: pointer;
  filter: grayscale(1);
  opacity: 0.55;
  transition: opacity 0.2s var(--ease), filter 0.2s var(--ease);
}

.thumb-strip img:hover { opacity: 1; }

.thumb-strip img.current {
  filter: grayscale(0);
  opacity: 1;
}

/* ============ TEXT OVERLAYS (about / contact) ============ */

.text-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 140px 28px 100px;
}

.about-mark {
  width: 44px;
  height: 44px;
  fill: var(--black);
  margin-bottom: 48px;
}

.text-overlay h1 {
  font-size: clamp(26px, 4.4vw, 44px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin-bottom: 36px;
}

.text-overlay p {
  font-size: 15px;
  line-height: 1.85;
  color: #444;
  margin-bottom: 22px;
  max-width: 620px;
}

.about-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 64px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.about-cols h2 {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 16px;
}

.about-cols ul { list-style: none; }

.about-cols li {
  font-size: 13px;
  line-height: 2.1;
}

.contact-rows {
  margin-top: 56px;
  border-top: 1px solid var(--line);
}

.contact-row {
  display: flex;
  align-items: baseline;
  gap: 40px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.contact-row span {
  flex: none;
  width: 90px;
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--grey);
}

.contact-row a,
.contact-row p {
  font-size: clamp(16px, 2.6vw, 24px);
  font-weight: 500;
  margin: 0;
  color: var(--black);
}

.contact-row a:hover { text-decoration: underline; }

/* ============ FOOTER ============ */

.site-footer {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  padding: 26px;
  font-size: 9px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--grey);
}
.footer-admin {
  color: var(--grey);
  text-decoration: none;
  opacity: 0.45;
  transition: opacity 0.2s ease;
}
.footer-admin:hover { opacity: 1; }

/* ============ RESPONSIVE ============ */

@media (max-width: 980px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .project-stage { padding: 60px 16px 10px; }
  .project-info,
  .thumb-strip { padding-left: 24px; padding-right: 24px; }
  .project-info { flex-direction: column; gap: 18px; }
  .stage-arrow.prev { left: 2px; }
  .stage-arrow.next { right: 2px; }
}

@media (max-width: 640px) {
  :root { --header-h: 64px; --filter-h: 40px; }

  .site-header { padding: 0 18px; }
  .brand-word { display: none; }
  .brand-mark { width: 34px; height: 34px; }
  .site-nav { gap: 18px; }
  .site-nav a { font-size: 10px; letter-spacing: 0.2em; }
  .filter-bar { gap: 18px; padding: 0 18px; overflow-x: auto; }

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

  /* no hover on touch — labels always visible */
  .tile img { filter: grayscale(0); }
  .tile-label { opacity: 1; transform: none; }

  .text-inner { padding: 110px 20px 70px; }
  .about-cols { grid-template-columns: 1fr; }
  .contact-row { flex-direction: column; gap: 10px; }
}