/* =========================================================================
   blackwhite.pictures — monochrome editorial gallery
   Palette is deliberately achromatic: the photographs are the only "colour".
   Display: Fraunces (restraint). Body: system sans. Signature: ink→paper rule.
   ========================================================================= */
:root{
  --ink:#0a0a0a;
  --paper:#ffffff;
  --paper-2:#fafaf9;
  --grey-1:#6f6f6c;
  --grey-2:#9a9a96;
  --hair:#e7e7e3;
  --hair-2:#ededea;
  --focus:#0a0a0a;
  --wrap:1360px;
  --gap:18px;
  --serif:"Fraunces",Georgia,"Times New Roman",serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--sans);color:var(--ink);background:var(--paper);
  font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:var(--ink);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
img{max-width:100%;display:block}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);
  backdrop-filter:saturate(120%) blur(10px);-webkit-backdrop-filter:saturate(120%) blur(10px)}
.site-header.scrolled{box-shadow:0 1px 0 var(--hair)}
.header-inner{display:flex;align-items:center;gap:22px;height:66px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{width:18px;height:18px;border-radius:50%;
  background:linear-gradient(135deg,#0a0a0a 0 50%,#e7e7e3 50% 100%);border:1px solid var(--ink)}
.brand-name{font-family:var(--serif);font-weight:600;font-size:19px;letter-spacing:-.01em}
.brand-dot{color:var(--grey-2)}
.search{flex:1 1 auto;max-width:520px;display:flex;align-items:center;
  border:1px solid var(--hair);border-radius:2px;background:var(--paper);transition:border-color .15s}
.search:focus-within{border-color:var(--ink)}
.search input{flex:1;border:0;background:transparent;padding:10px 14px;font:inherit;font-size:14px;color:var(--ink)}
.search input::placeholder{color:var(--grey-2)}
.search input:focus{outline:0}
.search button{border:0;background:transparent;padding:0 14px;height:40px;color:var(--grey-1);cursor:pointer}
.search button:hover{color:var(--ink)}
.nav{display:flex;align-items:center;gap:22px;flex:0 0 auto}
.nav a{font-size:13px;letter-spacing:.04em;text-transform:uppercase;color:var(--grey-1)}
.nav a:hover{color:var(--ink);text-decoration:none}
.nav .nav-about{color:var(--ink);font-weight:500}
.hamburger{display:none;flex-direction:column;gap:4px;width:40px;height:40px;border:0;background:transparent;cursor:pointer;padding:9px}
.hamburger span{height:1.5px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
.header-rule{height:2px;background:linear-gradient(to right,var(--ink),var(--paper))}

/* ---------- Hero (home) ---------- */
.hero{border-bottom:1px solid var(--hair);background:var(--paper)}
.hero-inner{padding:64px 0 44px;max-width:840px}
.eyebrow{font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--grey-2);margin:0 0 18px}
.hero h1{font-family:var(--serif);font-weight:400;font-size:clamp(34px,5.2vw,60px);line-height:1.04;
  letter-spacing:-.02em;margin:0 0 16px}
.hero h1 em{font-style:italic}
.hero p{font-size:17px;color:var(--grey-1);margin:0 0 26px;max-width:60ch}
.hero-search{display:flex;max-width:560px;border:1px solid var(--ink);border-radius:2px;overflow:hidden}
.hero-search input{flex:1;border:0;padding:15px 18px;font:inherit;font-size:16px}
.hero-search input:focus{outline:0}
.hero-search button{border:0;background:var(--ink);color:#fff;padding:0 24px;font:inherit;font-weight:500;cursor:pointer;letter-spacing:.02em}
.hero-search button:hover{background:#262625}

/* ---------- Category header ---------- */
.cat-head{padding:48px 0 30px;border-bottom:1px solid var(--hair)}
.cat-head h1{font-family:var(--serif);font-weight:400;font-size:clamp(28px,4vw,44px);
  letter-spacing:-.02em;margin:0 0 10px;text-transform:capitalize}
.cat-head .count{font-size:14px;color:var(--grey-1);letter-spacing:.02em}
.cat-head .lede{color:var(--grey-1);max-width:70ch;margin:12px 0 0}

/* ---------- Masonry gallery ---------- */
.gallery{padding:28px 0 10px}
.masonry{columns:4 300px;column-gap:var(--gap)}
@media(max-width:1100px){.masonry{columns:3 260px}}
@media(max-width:760px){.masonry{columns:2 180px;column-gap:12px}}
@media(max-width:440px){.masonry{columns:1}}
.tile{position:relative;break-inside:avoid;margin:0 0 var(--gap);overflow:hidden;
  background:var(--paper-2);border:1px solid var(--hair-2)}
.tile img{width:100%;height:auto;filter:grayscale(100%);transition:transform .45s ease,opacity .3s}
.tile:hover img{transform:scale(1.035)}
.tile a{display:block}
.tile:hover{text-decoration:none}
.tile-cap{position:absolute;left:0;right:0;bottom:0;padding:22px 12px 10px;color:#fff;
  font-size:12.5px;letter-spacing:.01em;opacity:0;transform:translateY(6px);transition:opacity .25s,transform .25s;
  background:linear-gradient(to top,rgba(0,0,0,.62),rgba(0,0,0,0))}
.tile:hover .tile-cap,.tile:focus-within .tile-cap{opacity:1;transform:none}

/* ---------- Pagination ---------- */
.pager{display:flex;justify-content:center;align-items:center;gap:8px;padding:40px 0 60px;flex-wrap:wrap}
.pager a,.pager span{min-width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  padding:0 12px;border:1px solid var(--hair);border-radius:2px;font-size:14px;color:var(--grey-1)}
.pager a:hover{border-color:var(--ink);color:var(--ink);text-decoration:none}
.pager .is-current{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---------- Image detail ---------- */
.photo-stage{background:#111;border-bottom:1px solid #000}
.photo-stage .frame{max-width:1100px;margin:0 auto;padding:30px 20px;text-align:center}
.photo-stage img{max-width:100%;max-height:78vh;width:auto;margin:0 auto;filter:grayscale(100%)}
.detail{padding:34px 0 10px}
.detail-grid{display:grid;grid-template-columns:1fr 300px;gap:44px}
@media(max-width:820px){.detail-grid{grid-template-columns:1fr;gap:26px}}
.detail h1{font-family:var(--serif);font-weight:400;font-size:clamp(24px,3.4vw,34px);
  letter-spacing:-.01em;line-height:1.15;margin:0 0 14px;text-transform:capitalize}
.detail .meta{color:var(--grey-1);font-size:15px;margin:0 0 22px}
.detail .breadcrumb{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--grey-2);margin:0 0 18px}
.detail .breadcrumb a{color:var(--grey-1)}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 0}
.tag{display:inline-block;font-size:12.5px;padding:6px 12px;border:1px solid var(--hair);border-radius:2px;
  color:var(--grey-1);background:var(--paper-2)}
a.tag:hover{border-color:var(--ink);color:var(--ink);text-decoration:none}
.tag--plain{color:var(--grey-2);background:transparent}
.side .btn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;
  padding:15px 18px;border-radius:2px;font-weight:500;font-size:15px;letter-spacing:.01em;margin:0 0 12px;cursor:pointer}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:#262625;text-decoration:none}
.btn-ghost{background:var(--paper);color:var(--ink);border:1px solid var(--ink)}
.btn-ghost:hover{background:var(--paper-2);text-decoration:none}
.license-card{border:1px solid var(--hair);border-radius:2px;padding:18px;margin-top:16px;font-size:13.5px;color:var(--grey-1)}
.license-card strong{color:var(--ink)}
.credit{margin-top:10px;background:var(--paper-2);border:1px solid var(--hair);border-radius:2px;padding:10px 12px;
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;color:var(--grey-1);word-break:break-word}

.section-title{font-family:var(--serif);font-weight:400;font-size:22px;letter-spacing:-.01em;margin:44px 0 18px}

/* ---------- About / license page ---------- */
.prose{max-width:760px;margin:0 auto;padding:54px 0 70px}
.prose h1{font-family:var(--serif);font-weight:400;font-size:clamp(30px,4.4vw,46px);letter-spacing:-.02em;margin:0 0 8px}
.prose .eyebrow{margin-bottom:14px}
.prose h2{font-family:var(--serif);font-weight:500;font-size:24px;margin:38px 0 12px;letter-spacing:-.01em}
.prose p{color:#2a2a28;margin:0 0 16px}
.prose ul{color:#2a2a28;padding-left:20px;margin:0 0 16px}
.prose li{margin:0 0 8px}
.prose .cc0-badge{display:inline-flex;align-items:center;gap:10px;border:1px solid var(--ink);
  border-radius:2px;padding:12px 16px;font-weight:500;margin:8px 0 4px}

/* ---------- Affiliate slot (kept, but quiet) ---------- */
.aff-slot{margin:22px 0}
.aff-slot:empty{display:none}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--hair);margin-top:40px;background:var(--paper-2)}
.footer-top{display:flex;justify-content:space-between;gap:40px;padding:46px 0 26px;flex-wrap:wrap}
.footer-tag{color:var(--grey-1);max-width:42ch;margin:10px 0 0;font-size:14px}
.footer-cats{display:flex;flex-wrap:wrap;gap:12px 22px;align-content:flex-start;max-width:520px}
.footer-cats a{font-size:13px;color:var(--grey-1);text-transform:uppercase;letter-spacing:.04em}
.footer-cats a:hover{color:var(--ink);text-decoration:none}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;padding:18px 0 34px;border-top:1px solid var(--hair);
  font-size:13px;color:var(--grey-2);flex-wrap:wrap}
.footer-bottom a{color:var(--grey-1)}

/* ---------- Mobile nav ---------- */
@media(max-width:860px){
  .hamburger{display:flex}
  .nav{position:absolute;top:66px;left:0;right:0;flex-direction:column;align-items:flex-start;gap:0;
    background:var(--paper);border-bottom:1px solid var(--hair);padding:6px 0;
    max-height:0;overflow:hidden;transition:max-height .28s ease;box-shadow:0 12px 24px rgba(0,0,0,.06)}
  .nav a{width:100%;padding:14px 28px;font-size:14px}
  .nav a:not(:last-child){border-bottom:1px solid var(--hair-2)}
  .site-header.nav-open .nav{max-height:80vh}
  .site-header.nav-open .hamburger span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
  .site-header.nav-open .hamburger span:nth-child(2){opacity:0}
  .site-header.nav-open .hamburger span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}
  .search{max-width:none}
}
@media(max-width:560px){
  .wrap{padding:0 18px}
  .brand-name{font-size:17px}
  .search{order:3;flex-basis:100%;max-width:none}
  .header-inner{flex-wrap:wrap;height:auto;padding:10px 0;gap:10px 16px}
  .nav{top:auto}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}