/* ============================================================
   cogito ergo sum  —  banmaruo
   Photography portfolio
   ============================================================ */

/* ---------- Reset / Base ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Cormorant Garamond","Noto Serif JP",Georgia,"Times New Roman",serif;
  background:#0a0a0a;
  color:#e8e6e1;
  line-height:1.7;
  font-weight:300;
  letter-spacing:.02em;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .3s ease,opacity .3s ease}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}

/* ---------- Typography helpers ---------- */
.serif{font-family:"Cormorant Garamond","Noto Serif JP",Georgia,serif}
.sans{font-family:"Inter","Helvetica Neue",Arial,sans-serif}
.upper{text-transform:uppercase;letter-spacing:.32em}

/* ---------- Loader ---------- */
#loader{
  position:fixed;inset:0;z-index:1000;
  background:#0a0a0a;
  display:flex;align-items:center;justify-content:center;
  transition:opacity .8s ease,visibility .8s ease;
}
#loader.hidden{opacity:0;visibility:hidden}
.loader-mark{
  font-family:"Cormorant Garamond",serif;
  font-size:clamp(28px,4vw,44px);
  font-style:italic;font-weight:300;
  color:#e8e6e1;letter-spacing:.05em;
  position:relative;padding-bottom:14px;
}
.loader-mark::after{
  content:"";position:absolute;left:50%;bottom:0;
  width:0;height:1px;background:#e8e6e1;
  animation:loadLine 1.6s ease-in-out infinite;
}
@keyframes loadLine{
  0%{width:0;left:50%}
  50%{width:100%;left:0}
  100%{width:0;left:50%}
}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:24px 48px;
  display:flex;align-items:center;justify-content:space-between;
  transition:background .4s ease,padding .4s ease,border-color .4s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(10,10,10,.92);
  backdrop-filter:blur(12px);
  padding:16px 48px;
  border-bottom-color:rgba(232,230,225,.08);
}
.brand{
  font-family:"Cormorant Garamond",serif;
  font-size:22px;font-weight:300;font-style:italic;
  letter-spacing:.04em;
}
.brand .dot{
  display:inline-block;width:5px;height:5px;
  background:#c9a96a;border-radius:50%;
  margin:0 8px;vertical-align:middle;
}
.nav{display:flex;gap:38px;align-items:center}
.nav a{
  font-family:"Inter",sans-serif;
  font-size:11px;font-weight:400;
  text-transform:uppercase;letter-spacing:.32em;
  color:#e8e6e1;opacity:.75;
  position:relative;padding:6px 0;
}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;
  width:0;height:1px;background:#c9a96a;
  transition:width .4s ease;
}
.nav a:hover,.nav a.active{opacity:1}
.nav a:hover::after,.nav a.active::after{width:100%}

.nav-toggle{display:none;width:32px;height:32px;position:relative;z-index:101}
.nav-toggle span{
  position:absolute;left:6px;width:20px;height:1px;
  background:#e8e6e1;transition:transform .3s ease,top .3s ease,opacity .3s ease;
}
.nav-toggle span:nth-child(1){top:11px}
.nav-toggle span:nth-child(2){top:20px}
.nav-toggle.open span:nth-child(1){top:15px;transform:rotate(45deg)}
.nav-toggle.open span:nth-child(2){top:15px;transform:rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  height:100vh;min-height:640px;
  overflow:hidden;
  display:flex;align-items:center;justify-content:center;
}
.hero-slides{position:absolute;inset:0}
.hero-slide{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:0;transition:opacity 2s ease;
  transform:scale(1.05);
  animation:slowZoom 12s ease-in-out infinite alternate;
}
.hero-slide.active{opacity:1}
@keyframes slowZoom{
  from{transform:scale(1.0)}
  to{transform:scale(1.12)}
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(10,10,10,.55) 0%,rgba(10,10,10,.25) 40%,rgba(10,10,10,.85) 100%);
  pointer-events:none;
}
.hero-content{
  position:relative;z-index:2;
  text-align:center;
  padding:0 24px;
  animation:fadeUp 1.6s ease .4s both;
}
.hero-eyebrow{
  font-family:"Inter",sans-serif;
  font-size:11px;letter-spacing:.5em;text-transform:uppercase;
  color:#c9a96a;margin-bottom:28px;
  display:inline-flex;align-items:center;gap:14px;
}
.hero-eyebrow::before,.hero-eyebrow::after{
  content:"";width:32px;height:1px;background:#c9a96a;opacity:.6;
}
.hero-title{
  font-family:"Cormorant Garamond",serif;
  font-size:clamp(48px,9vw,128px);
  font-weight:300;font-style:italic;
  line-height:1;letter-spacing:.01em;
  color:#fff;
  margin-bottom:24px;
  text-shadow:0 2px 30px rgba(0,0,0,.6);
}
.hero-title .ergo{font-style:normal;font-variant:small-caps;letter-spacing:.04em}
.hero-sub{
  font-family:"Inter",sans-serif;
  font-size:13px;letter-spacing:.42em;text-transform:uppercase;
  color:#e8e6e1;opacity:.85;
}
.hero-scroll{
  position:absolute;bottom:36px;left:50%;transform:translateX(-50%);
  z-index:2;
  font-family:"Inter",sans-serif;font-size:10px;
  letter-spacing:.4em;text-transform:uppercase;
  color:#e8e6e1;opacity:.7;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.hero-scroll .line{
  width:1px;height:60px;background:#e8e6e1;
  animation:scrollLine 2.4s ease-in-out infinite;
  transform-origin:top;
}
@keyframes scrollLine{
  0%,100%{transform:scaleY(.2)}
  50%{transform:scaleY(1)}
}
@keyframes fadeUp{
  from{opacity:0;transform:translateY(30px)}
  to{opacity:1;transform:translateY(0)}
}

/* Slide indicators */
.hero-indicators{
  position:absolute;right:48px;top:50%;transform:translateY(-50%);
  z-index:3;display:flex;flex-direction:column;gap:14px;
}
.hero-indicators button{
  width:30px;height:1px;background:rgba(255,255,255,.3);
  position:relative;transition:background .3s ease;
}
.hero-indicators button.active{background:#c9a96a}

/* ---------- Section common ---------- */
section{padding:140px 48px;position:relative}
.section-head{
  text-align:center;margin-bottom:80px;
  display:flex;flex-direction:column;align-items:center;gap:18px;
}
.section-num{
  font-family:"Inter",sans-serif;
  font-size:11px;letter-spacing:.5em;text-transform:uppercase;
  color:#c9a96a;
}
.section-title{
  font-family:"Cormorant Garamond",serif;
  font-size:clamp(40px,6vw,76px);
  font-weight:300;font-style:italic;
  line-height:1;letter-spacing:.01em;
}
.section-rule{
  width:48px;height:1px;background:#c9a96a;margin-top:8px;
}

/* ---------- Works ---------- */
#works{padding-top:160px;background:#0a0a0a}
.filters{
  display:flex;flex-wrap:wrap;justify-content:center;gap:8px 4px;
  margin-bottom:56px;
}
.filter-btn{
  font-family:"Inter",sans-serif;
  font-size:11px;letter-spacing:.32em;text-transform:uppercase;
  color:#e8e6e1;opacity:.55;
  padding:10px 22px;
  border:1px solid transparent;border-radius:999px;
  transition:all .3s ease;
}
.filter-btn:hover{opacity:1}
.filter-btn.active{
  opacity:1;color:#c9a96a;border-color:rgba(201,169,106,.4);
}
.filter-count{
  display:inline-block;margin-left:6px;
  font-size:9px;opacity:.6;vertical-align:super;
}

.grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:2px;
  max-width:1600px;margin:0 auto;
}
.grid-item{
  position:relative;overflow:hidden;
  aspect-ratio:3/2;
  background:#1a1a1a;
  cursor:pointer;
  opacity:0;transform:translateY(20px);
  transition:opacity .8s ease,transform .8s ease;
}
.grid-item.in-view{opacity:1;transform:translateY(0)}
.grid-item.hide{display:none}
.grid-item img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 1.2s ease,filter .6s ease;
  filter:brightness(.92) saturate(.95);
}
.grid-item:hover img{transform:scale(1.06);filter:brightness(1) saturate(1)}
.grid-item .meta{
  position:absolute;left:0;right:0;bottom:0;
  padding:18px 20px;
  background:linear-gradient(180deg,transparent,rgba(0,0,0,.78));
  display:flex;align-items:flex-end;justify-content:space-between;
  opacity:0;transform:translateY(8px);
  transition:opacity .4s ease,transform .4s ease;
}
.grid-item:hover .meta{opacity:1;transform:translateY(0)}
.grid-item .meta-cat{
  font-family:"Inter",sans-serif;
  font-size:10px;letter-spacing:.3em;text-transform:uppercase;
  color:#c9a96a;
}
.grid-item .meta-num{
  font-family:"Cormorant Garamond",serif;
  font-style:italic;font-size:18px;color:#e8e6e1;opacity:.85;
}
.grid-item.video::before{
  content:"";position:absolute;inset:0;z-index:2;
  background:rgba(10,10,10,.35);
  pointer-events:none;
}
.grid-item.video::after{
  content:"";position:absolute;left:50%;top:50%;
  transform:translate(-50%,-50%);
  width:64px;height:64px;border:1px solid rgba(255,255,255,.85);
  border-radius:50%;
  z-index:3;pointer-events:none;
  transition:transform .4s ease,background .4s ease;
}
.grid-item.video .play-icon{
  position:absolute;left:50%;top:50%;
  transform:translate(-42%,-50%);
  width:0;height:0;z-index:4;pointer-events:none;
  border-left:14px solid #fff;
  border-top:9px solid transparent;
  border-bottom:9px solid transparent;
  transition:border-left-color .4s ease;
}
.grid-item.video:hover::after{
  transform:translate(-50%,-50%) scale(1.08);
  background:rgba(201,169,106,.18);
  border-color:#c9a96a;
}
.grid-item.video:hover .play-icon{border-left-color:#c9a96a}

/* ---------- About ---------- */
#about{
  background:#0d0d0d;
  padding:160px 48px;
}
.about-wrap{
  max-width:1100px;margin:0 auto;
  display:grid;grid-template-columns:1fr 1.2fr;gap:96px;
  align-items:center;
}
.about-photo{
  position:relative;
  aspect-ratio:3/4;
  overflow:hidden;
}
.about-photo::after{
  content:"";position:absolute;inset:0;
  border:1px solid rgba(201,169,106,.35);
  transform:translate(18px,18px);
  pointer-events:none;
}
.about-photo img{
  width:100%;height:100%;object-fit:cover;
  filter:grayscale(.15) brightness(.95);
  transition:transform 1.4s ease,filter .8s ease;
}
.about-photo:hover img{transform:scale(1.04);filter:grayscale(0) brightness(1)}

.about-body .section-num{display:block;margin-bottom:14px}
.about-statement{
  font-family:"Cormorant Garamond",serif;
  font-size:clamp(48px,5.5vw,80px);
  font-weight:300;font-style:italic;
  line-height:1.05;letter-spacing:.005em;
  margin:6px 0 36px;
}
.about-statement .gold{color:#c9a96a}
.about-statement::after{
  content:"";display:block;
  width:48px;height:1px;background:#c9a96a;
  margin-top:32px;
}
.about-text{
  font-size:16px;line-height:1.95;
  color:#bdbab2;font-weight:300;
  max-width:48ch;
}
.about-text + .about-text{margin-top:18px}
.about-sign{
  margin-top:40px;
  font-family:"Cormorant Garamond",serif;
  font-style:italic;font-size:22px;
  color:#e8e6e1;
}
.about-sign small{
  display:block;margin-top:6px;
  font-family:"Inter",sans-serif;
  font-size:10px;letter-spacing:.4em;text-transform:uppercase;
  color:#c9a96a;font-style:normal;
}

/* ---------- Contact ---------- */
#contact{
  background:#0a0a0a;
  text-align:center;
  padding:160px 48px 120px;
}
.contact-line{
  font-family:"Cormorant Garamond",serif;
  font-style:italic;
  font-size:clamp(28px,3.4vw,44px);
  font-weight:300;line-height:1.4;
  max-width:760px;margin:0 auto 48px;
  color:#e8e6e1;
}
.contact-cta{
  display:inline-block;
  font-family:"Inter",sans-serif;
  font-size:12px;letter-spacing:.4em;text-transform:uppercase;
  color:#e8e6e1;
  padding:18px 44px;
  border:1px solid rgba(232,230,225,.3);
  transition:all .4s ease;
}
.contact-cta:hover{
  color:#0a0a0a;background:#c9a96a;border-color:#c9a96a;
  letter-spacing:.46em;
}
.contact-meta{
  margin-top:64px;
  display:flex;justify-content:center;gap:48px;flex-wrap:wrap;
  font-family:"Inter",sans-serif;
  font-size:11px;letter-spacing:.32em;text-transform:uppercase;
  color:#807d76;
}
.contact-meta span{color:#c9a96a}

/* ---------- Footer ---------- */
.site-footer{
  padding:48px;
  border-top:1px solid rgba(232,230,225,.06);
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;flex-wrap:wrap;
  font-family:"Inter",sans-serif;
  font-size:10px;letter-spacing:.3em;text-transform:uppercase;
  color:#605d56;
}
.footer-brand{
  font-family:"Cormorant Garamond",serif;
  font-style:italic;font-size:18px;letter-spacing:.04em;
  text-transform:none;color:#bdbab2;
}

/* ---------- Lightbox ---------- */
#lightbox{
  position:fixed;inset:0;z-index:200;
  background:rgba(8,8,8,.96);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;
  transition:opacity .4s ease,visibility .4s ease;
}
#lightbox.open{opacity:1;visibility:visible}
.lb-stage{
  position:relative;
  max-width:92vw;max-height:88vh;
  display:flex;align-items:center;justify-content:center;
}
.lb-img{
  max-width:92vw;max-height:88vh;
  object-fit:contain;
  box-shadow:0 30px 80px rgba(0,0,0,.7);
  opacity:0;transition:opacity .5s ease;
}
.lb-img.loaded{opacity:1}
.lb-info{
  position:absolute;left:0;bottom:-44px;
  font-family:"Inter",sans-serif;
  font-size:11px;letter-spacing:.32em;text-transform:uppercase;
  color:#bdbab2;
}
.lb-info .gold{color:#c9a96a;margin-right:14px}
.lb-counter{
  position:absolute;right:0;bottom:-44px;
  font-family:"Cormorant Garamond",serif;
  font-style:italic;font-size:16px;color:#bdbab2;
}
.lb-btn{
  position:fixed;
  width:56px;height:56px;
  border:1px solid rgba(232,230,225,.2);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:#e8e6e1;font-size:20px;
  transition:all .3s ease;
  z-index:201;
}
.lb-btn:hover{
  border-color:#c9a96a;color:#c9a96a;
  transform:scale(1.06);
}
.lb-prev{left:36px;top:50%;transform:translateY(-50%)}
.lb-prev:hover{transform:translateY(-50%) scale(1.06)}
.lb-next{right:36px;top:50%;transform:translateY(-50%)}
.lb-next:hover{transform:translateY(-50%) scale(1.06)}
.lb-close{top:36px;right:36px}
.lb-arrow{font-family:"Cormorant Garamond",serif;font-style:italic;font-size:26px;line-height:1}

/* ---------- Responsive ---------- */
@media (max-width:1100px){
  .grid{grid-template-columns:repeat(3,1fr)}
  .about-wrap{grid-template-columns:1fr;gap:64px;max-width:600px}
  .about-photo{max-width:420px;margin:0 auto}
}
@media (max-width:760px){
  .site-header{padding:18px 24px}
  .site-header.scrolled{padding:14px 24px}
  .nav{
    position:fixed;inset:0;
    background:rgba(8,8,8,.97);backdrop-filter:blur(16px);
    flex-direction:column;justify-content:center;align-items:center;
    gap:36px;
    opacity:0;visibility:hidden;
    transition:opacity .4s ease,visibility .4s ease;
  }
  .nav.open{opacity:1;visibility:visible}
  .nav a{font-size:14px}
  .nav-toggle{display:block}
  section{padding:100px 24px}
  #works{padding-top:120px}
  .section-head{margin-bottom:56px}
  .grid{grid-template-columns:repeat(2,1fr);gap:1px}
  .filters{gap:4px}
  .filter-btn{padding:8px 14px;font-size:10px;letter-spacing:.24em}
  .hero-indicators{right:20px}
  .hero-indicators button{width:20px}
  .lb-btn{width:44px;height:44px}
  .lb-prev{left:12px}
  .lb-next{right:12px}
  .lb-close{top:18px;right:18px}
  .lb-info,.lb-counter{font-size:10px}
  .contact-meta{gap:24px;flex-direction:column}
  .site-footer{padding:32px 24px;justify-content:center;text-align:center}
}
@media (max-width:420px){
  .grid{grid-template-columns:1fr}
  .grid-item{aspect-ratio:4/3}
}