:root{
  --bg: #fbfbfc;
  --panel: #ffffff;
  --text: #121316;
  --muted: rgba(18,19,22,.65);
  --line: rgba(18,19,22,.12);
  --shadow: 0 8px 24px rgba(18,19,22,.08);
  --radius: 16px;
  --max: 1100px;
}

*{ box-sizing: border-box; }
html,body{ height: 100%; }
body{
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  background: var(--bg);
  color: var(--text);
}

a{ color: inherit; text-decoration: none; }
img{ max-width: 100%; display:block; }

.container{ width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); border:0;
}

/* Header */
.site-header{
  position: sticky; top: 0;
  background: rgba(251,251,252,.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  z-index: 50;
}
.header-row{ display:flex; align-items:center; justify-content:space-between; gap:16px; padding: 14px 0; }

.brand{ display:flex; align-items:center; gap:10px; }
.brand-logo{ width: 30px; height: 30px; }

.nav{ }
.nav-list{ display:flex; align-items:center; gap:14px; list-style:none; padding:0; margin:0; }
.nav-link{
  padding: 10px 10px;
  border-radius: 10px;
  color: var(--muted);
}
.nav-link:hover{ background: rgba(18,19,22,.06); color: var(--text); }
.nav-link.is-active{ color: var(--text); background: rgba(18,19,22,.06); }

.nav-toggle{
  display:none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
}
.burger{
  display:block; width:18px; height:2px; background: var(--text);
  position:relative;
}
.burger::before,.burger::after{
  content:""; position:absolute; left:0; width:18px; height:2px; background: var(--text);
}
.burger::before{ top:-6px; }
.burger::after{ top:6px; }

/* Main */
.site-main{ padding-bottom: 40px; }

.section{ padding: 34px 0; }
.section-head{ display:flex; align-items:flex-end; justify-content:space-between; gap:18px; margin-bottom: 16px; }
.section-head h1, .section-head h2{ margin:0; }
h1{ font-size: clamp(28px, 3vw, 40px); margin: 0 0 12px; letter-spacing: -0.02em; }
h2{ font-size: 22px; margin: 0 0 10px; }
h3{ margin: 0 0 8px; }
.muted{ color: var(--muted); }
.small{ font-size: 13px; }

/* Hero */
.hero{ padding: 40px 0 20px; }
.hero-grid{ display:grid; grid-template-columns: 1.3fr 1fr; gap: 18px; align-items: stretch; }
.hero-title{ margin: 0 0 10px; }
.hero-subtitle{ margin: 0 0 16px; color: var(--muted); }
.hero-actions{ display:flex; gap:10px; flex-wrap: wrap; }

.hero-card{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero-card-inner{ padding: 18px; }
.kicker{ margin:0 0 10px; font-weight: 600; }

.tiles{ display:grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.tile{
  border: 1px solid var(--line);
  background: rgba(18,19,22,.03);
  border-radius: 14px;
  padding: 16px;
  font-weight: 600;
}
.tile:hover{ background: rgba(18,19,22,.06); }

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding: 11px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--text);
  color: var(--bg);
  font-weight: 600;
}
.btn:hover{ opacity: .92; }
.btn-ghost{
  background: var(--panel);
  color: var(--text);
}

/* Category cards */
.category-grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.cat-card{
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: 0 8px 20px rgba(18,19,22,.05);
}
.cat-card:hover{ transform: translateY(-1px); }

/* Gallery grid */
.grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.thumb{
  position:relative;
  border-radius: 14px;
  overflow:hidden;
  border: 1px solid var(--line);
  background: var(--panel);
}
.thumb img{
  width:100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.thumb-label{
  position:absolute; left:10px; bottom:10px;
  background: rgba(255,255,255,.82);
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 13px;
}

/* Viewer */
.viewer{ padding: 18px 0 30px; }
.viewer-top{ padding: 10px 0; }
.viewer-nav{
  display:flex; align-items:center; justify-content:space-between; gap: 12px;
  flex-wrap: wrap;
}
.viewer-link{
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 10px 12px;
  border-radius: 999px;
  color: var(--text);
  cursor: pointer;
}
.viewer-link:hover{ background: rgba(18,19,22,.04); }
.viewer-link.disabled{ opacity: .45; cursor: not-allowed; }

.viewer-figure{ margin: 0; }
.viewer-img{
  width: 100%;
  max-height: calc(100vh - 220px);
  object-fit: contain;
  background: var(--panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.viewer-cap{
  display:flex; justify-content:center; gap: 8px; padding: 12px 10px;
  text-align:center;
}

/* About / Contact */
.card{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.about-grid, .contact-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.chips{ display:flex; flex-wrap:wrap; gap: 8px; padding:0; margin:0; list-style:none; }
.chips li{
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 10px;
  background: rgba(18,19,22,.03);
}

/* Form */
.form{ display:grid; gap: 10px; }
label span{ display:block; font-size: 13px; color: var(--muted); margin: 0 0 6px; }
input, textarea{
  width: 100%;
  padding: 11px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
}
input:focus, textarea:focus{ outline: 3px solid rgba(18,19,22,.12); outline-offset: 2px; }

.alert{
  border-radius: 12px;
  padding: 10px 12px;
  margin-bottom: 10px;
  border: 1px solid var(--line);
}
.alert.success{ background: rgba(16,185,129,.10); }
.alert.error{ background: rgba(239,68,68,.10); }

/* Footer */
.site-footer{
  border-top: 1px solid var(--line);
  padding: 20px 0;
}
.footer-row{ display:flex; justify-content:space-between; gap: 14px; flex-wrap: wrap; }

/* Lightbox */
.lightbox{ position:fixed; inset:0; display:none; z-index: 100; }
.lightbox.is-open{ display:block; }
.lightbox-backdrop{ position:absolute; inset:0; background: rgba(0,0,0,.62); }
.lightbox-content{
  position:relative;
  width: min(1100px, calc(100% - 28px));
  margin: 40px auto;
  background: var(--panel);
  border-radius: var(--radius);
  overflow:hidden;
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 30px 80px rgba(0,0,0,.35);
}
.lightbox-content img{
  width:100%;
  max-height: calc(100vh - 150px);
  object-fit: contain;
  background: #0b0b0c;
}
.lightbox-close{
  position:absolute; top:10px; right:10px;
  width: 40px; height: 40px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.9);
  font-size: 22px;
  cursor:pointer;
}
.lightbox-cap{ padding: 10px 12px; color: var(--muted); }

/* Responsive */
@media (max-width: 980px){
  .grid{ grid-template-columns: repeat(3, 1fr); }
  .category-grid{ grid-template-columns: repeat(2, 1fr); }
  .hero-grid{ grid-template-columns: 1fr; }
}
@media (max-width: 640px){
  .nav-toggle{ display:inline-flex; align-items:center; justify-content:center; }
  .nav{ display:none; }
  .nav.is-open{ display:block; position:absolute; left:0; right:0; top: 62px; background: rgba(251,251,252,.98); border-bottom: 1px solid var(--line); }
  .nav-list{ flex-direction:column; align-items:stretch; padding: 10px; }
  .nav-link{ display:block; }

  .grid{ grid-template-columns: repeat(2, 1fr); }
  .about-grid, .contact-grid{ grid-template-columns: 1fr; }
}

/* Lazy blur-up */
.blur-up{
  filter: blur(18px);
  transform: scale(1.02);
  transition: filter .35s ease, transform .35s ease, opacity .35s ease;
  opacity: .95;
}
.blur-up.is-loaded{
  filter: blur(0);
  transform: none;
  opacity: 1;
}

.viewer-imgBtn{
  display:block;
  width:100%;
  padding:0;
  border:0;
  background: transparent;
  cursor: zoom-in;
}
.viewer-imgBtn:focus{
  outline: 3px solid rgba(18,19,22,.18);
  outline-offset: 4px;
  border-radius: 10px;
}

#lightbox-img.blur-up{ filter: blur(18px); }
#lightbox-img.blur-up.is-loaded{ filter: blur(0); }


/* Thumb as button + helper link */
.thumb{ position:relative; }
.thumb-btn{
  display:block;
  width:100%;
  padding:0;
  border:0;
  background: transparent;
  cursor: zoom-in;
  text-align: left;
}
.thumb-btn:focus{
  outline: 3px solid rgba(18,19,22,.18);
  outline-offset: 3px;
  border-radius: 14px;
}
.thumb-open{
  position:absolute;
  top:10px; right:10px;
  background: rgba(255,255,255,.86);
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  color: var(--text);
}
.thumb-open:hover{ background: rgba(255,255,255,.95); }