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

:root {
  --white: #f8f8f6;
  --black: #0e0e0e;
  --mid:   #6b6b6b;
  --font:  'Helvetica Neue', Helvetica, Arial, sans-serif;
  --nav-h: 56px;
  --ease:  cubic-bezier(0.4, 0, 0.2, 1);
}

html, body { height: 100%; }

body {
  font-family: var(--font);
  background: var(--black);
  color: var(--white);
  -webkit-font-smoothing: antialiased;
}

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

/* ── Nav ── */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  /* transparent on landing, filled on inner pages via body class */
}

.site-nav .nav-logo {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.nav-logo-short { display: none; }

@media (max-width: 700px) {
  .site-nav .nav-logo {
    font-size: 0.7rem;
    letter-spacing: 0.05em;
  }
  .nav-logo-full  { display: none; }
  .nav-logo-short { display: inline; }
}

.site-nav nav {
  display: flex;
  gap: 2rem;
}

.site-nav nav a {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.7;
  transition: opacity 0.2s var(--ease);
}

.site-nav nav a:hover { opacity: 1; }

/* Nav filled style for inner pages */
body.inner .site-nav {
  background: var(--black);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

@media (max-width: 900px) {
  .site-nav {
    padding: 0 1rem;
  }

  .site-nav nav {
    gap: 1.25rem;
  }

  .site-nav nav a {
    font-size: 0.7rem;
  }
}

/* ── Split landing ── */
.split {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.split-half {
  position: relative;
  flex: 1;
  overflow: hidden;
  cursor: pointer;
  transition: flex 0.7s var(--ease);
}

.split:has(.split-half:hover) .split-half { flex: 0.4; }
.split:has(.split-half:hover) .split-half:hover { flex: 0.6; }

/* fallback background when no hero image is available */
.split-half:first-child { background: #141a14; }
.split-half:last-child  { background: #141414; }

.split-half img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.8s var(--ease), filter 0.6s var(--ease);
  filter: brightness(0.6);
  --zoom: 1.04; /* override per-half via inline style on the <a> */
}

/* idle: both sides dim toward the centre via a gradient overlay */
.split-half::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  transition: opacity 0.6s var(--ease);
}

/* left half darkens on its right edge */
.split-half:first-child::after {
  background: linear-gradient(to right, transparent 40%, rgba(0,0,0,0.75) 100%);
}

/* right half darkens on its left edge */
.split-half:last-child::after {
  background: linear-gradient(to left, transparent 40%, rgba(0,0,0,0.75) 100%);
}

/* on hover: hovered side — lift brightness, fade the inner shadow */
.split:has(.split-half:hover) .split-half:hover img {
  transform: scale(var(--zoom, 1.04));
  filter: brightness(0.75);
}
.split:has(.split-half:hover) .split-half:hover::after {
  opacity: 0.3;
}

/* on hover: idle side — drop brightness further, deepen inner shadow */
.split:has(.split-half:hover) .split-half:not(:hover) img {
  filter: brightness(0.3);
}
.split:has(.split-half:hover) .split-half:not(:hover)::after {
  opacity: 1.0;
}

.split-label {
  position: absolute;
  bottom: 2.5rem;
  left: 0; right: 0;
  text-align: center;
  pointer-events: none;
  z-index: 1;
}

.split-label span {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white);
  opacity: 0.85;
  border-bottom: 1px solid rgba(255,255,255,0.4);
  padding-bottom: 0.25rem;
  transition: opacity 0.3s var(--ease), letter-spacing 0.3s var(--ease);
}

.split-half:hover .split-label span {
  opacity: 1;
  letter-spacing: 0.28em;
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* dead zone — top 28% of the split captures pointer events so
   hovering near the nav never triggers the expand animation */
.split-dead-zone {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 28%;
  z-index: 20;
  pointer-events: all;
  cursor: default;
}

/* ── Mobile portrait: stack halves vertically ── */
@media (orientation: portrait) and (max-width: 900px) {
  .split {
    flex-direction: column;
  }

  /* disable dead zone on touch — no hover jitter to guard against */
  .split-dead-zone {
    display: none;
  }

  /* each half takes exactly half the viewport height */
  .split-half {
    flex: none;
    width: 100%;
    height: 50vh;
    transition: none;
  }

  /* disable the expand animation — no hover on touch */
  .split:has(.split-half:hover) .split-half,
  .split:has(.split-half:hover) .split-half:hover {
    flex: none;
    height: 50vh;
  }

  /* keep images at a readable brightness, no hover dimming */
  .split-half img,
  .split:has(.split-half:hover) .split-half:hover img,
  .split:has(.split-half:hover) .split-half:not(:hover) img {
    filter: brightness(0.6);
    transform: none;
  }

  /* inner-edge gradients face down/up instead of left/right */
  .split-half:first-child::after {
    background: linear-gradient(to bottom, transparent 40%, rgba(0,0,0,0.6) 100%);
  }

  .split-half:last-child::after {
    background: linear-gradient(to top, transparent 40%, rgba(0,0,0,0.6) 100%);
  }

  /* keep opacity steady — no hover state to react to */
  .split:has(.split-half:hover) .split-half::after,
  .split:has(.split-half:hover) .split-half:hover::after,
  .split:has(.split-half:hover) .split-half:not(:hover)::after {
    opacity: 1;
  }

  /* label centred vertically in each half */
  .split-label {
    bottom: 1.75rem;
  }
}

/* ── Gallery ── */
.gallery-page {
  padding-top: calc(var(--nav-h) + 2.5rem);
  padding-bottom: 4rem;
  min-height: 100vh;
}

.gallery-header {
  padding: 0 2rem 2.5rem;
  display: flex;
  align-items: baseline;
  gap: 1rem;
}

.gallery-header h1 {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--white);
}

.gallery-header .count {
  font-size: 0.75rem;
  color: var(--mid);
}

.gallery-grid {
  columns: 3;
  column-gap: 4px;
  padding: 0 2rem;
}

@media (max-width: 900px) { .gallery-grid { columns: 2; } }
@media (max-width: 560px) { .gallery-grid { columns: 1; } }

.gallery-grid figure {
  break-inside: avoid;
  margin-bottom: 4px;
  overflow: hidden;
  cursor: zoom-in;
}

.gallery-grid figure img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s var(--ease), filter 0.3s var(--ease);
  filter: brightness(0.95);
}

.gallery-grid figure:hover img {
  transform: scale(1.02);
  filter: brightness(0.55);
}

/* hover metadata overlay */
.photo-meta {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1rem 0.85rem 0.85rem;
  background: linear-gradient(to top, rgba(0,0,0,0.72) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s var(--ease);
  pointer-events: none;
}

.gallery-grid figure {
  position: relative;
}

.gallery-grid figure:hover .photo-meta {
  opacity: 1;
}

.meta-caption {
  display: block;
  font-size: 0.8rem;
  color: var(--white);
  margin-bottom: 0.3rem;
  line-height: 1.3;
}

.meta-details {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
  font-size: 0.68rem;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.04em;
}

.gallery-empty {
  padding: 0 2rem;
  color: var(--mid);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

/* ── Lightbox ── */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,0.92);
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
}

.lightbox.open { display: flex; }

.lightbox img {
  max-width: 92vw;
  max-height: 92vh;
  object-fit: contain;
  box-shadow: 0 0 80px rgba(0,0,0,0.6);
}

.lightbox img { cursor: default; }

.lightbox-close {
  position: absolute;
  top: 1.5rem; right: 1.75rem;
  font-size: 1.4rem;
  color: rgba(255,255,255,0.5);
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s;
  z-index: 1;
}

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

.lightbox-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: rgba(255,255,255,0.4);
  font-size: 3rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 1.25rem;
  transition: color 0.2s;
  z-index: 1;
}

.lightbox-arrow:hover { color: var(--white); }
.lightbox-arrow--prev { left: 0; }
.lightbox-arrow--next { right: 0; }

.lightbox-counter {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.4);
}

.lightbox-meta {
  position: absolute;
  bottom: 0;
  left: 0; right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  padding: 3rem 2rem 1rem;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 100%);
  pointer-events: none;
  text-align: center;
}

.lm-caption {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.9);
  line-height: 1.4;
}

.lm-details {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.06em;
}

/* ── Scroll reveal ── */
.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

/* only animate if browser has already painted the image (has intrinsic size) */
.reveal.will-reveal {
  opacity: 0;
  transform: translateY(16px);
}

.reveal.revealed {
  opacity: 1;
  transform: none;
}

/* ── About ── */
.about-page {
  padding-top: calc(var(--nav-h) + 4rem);
  padding-bottom: 6rem;
  min-height: 100vh;
  max-width: 600px;
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.about-page h1 {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 2.5rem;
}

.about-page p {
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(248,248,246,0.8);
  margin-bottom: 1.5rem;
}

.about-instagram {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--mid);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.about-instagram:hover {
  color: var(--fg);
  border-bottom-color: var(--mid);
}

/* ── Upload ── */
.upload-page {
  padding-top: calc(var(--nav-h) + 4rem);
  padding-bottom: 6rem;
  min-height: 100vh;
  max-width: 420px;
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.upload-page h1 {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 2.5rem;
}

.upload-notice {
  font-size: 0.82rem;
  padding: 0.75rem 1rem;
  margin-bottom: 2rem;
  border-radius: 2px;
}

.upload-notice--ok {
  background: rgba(255,255,255,0.05);
  border-left: 2px solid rgba(255,255,255,0.3);
  color: rgba(248,248,246,0.8);
}

.upload-notice code {
  font-family: monospace;
  color: var(--white);
}

.upload-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.upload-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.upload-field label {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--mid);
}

.upload-field input,
.upload-field select {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--white);
  font-family: var(--font);
  font-size: 0.9rem;
  padding: 0.6rem 0.75rem;
  border-radius: 2px;
  outline: none;
  transition: border-color 0.2s;
}

.upload-field input:focus,
.upload-field select:focus {
  border-color: rgba(255,255,255,0.35);
}

.upload-field input[type="file"] {
  padding: 0.5rem 0.75rem;
  cursor: pointer;
}

.upload-form button {
  align-self: flex-start;
  background: var(--white);
  color: var(--black);
  border: none;
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.65rem 1.5rem;
  cursor: pointer;
  border-radius: 2px;
  transition: opacity 0.2s;
}

.upload-form button:hover  { opacity: 0.85; }
.upload-form button:disabled { opacity: 0.4; cursor: not-allowed; }

.upload-notice--err {
  background: rgba(255,80,80,0.08);
  border-left: 2px solid rgba(255,80,80,0.5);
  color: rgba(255,160,160,0.9);
}

.upload-preview {
  margin-top: 0.75rem;
}

.upload-preview img {
  max-width: 100%;
  max-height: 220px;
  object-fit: contain;
  border-radius: 2px;
  opacity: 0.85;
}

.upload-progress {
  height: 2px;
  background: rgba(255,255,255,0.08);
  border-radius: 1px;
  overflow: hidden;
}

.upload-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--white);
  transition: width 0.15s linear;
}

/* ── 404 ── */
.not-found-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  gap: 1rem;
  text-align: center;
}

.not-found-code {
  font-size: 6rem;
  font-weight: 200;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.08);
  line-height: 1;
}

.not-found-page p {
  font-size: 0.85rem;
  color: var(--mid);
  letter-spacing: 0.05em;
}

.not-found-page a {
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(255,255,255,0.25);
  padding-bottom: 0.2rem;
  color: rgba(255,255,255,0.6);
  transition: color 0.2s;
}

.not-found-page a:hover { color: var(--white); }