/* =====================================================================
   Hatch Blend Vault — Shared Stylesheet
   Premium Japanese architectural aesthetic / modular interiors
   ===================================================================== */

:root{
  --charcoal:      #23211f;
  --charcoal-2:    #2e2b28;
  --stone:         #8b8781;
  --stone-light:   #c9c4bb;
  --beige:         #e9e1d3;
  --beige-2:       #f4efe4;
  --cedar:         #a9714a;
  --cedar-dark:    #7c4f31;
  --soft-white:    #faf8f4;
  --line:          rgba(35,33,31,0.12);

  --font-display: 'Fraunces', 'Shippori Mincho', serif;
  --font-jp:      'Shippori Mincho', serif;
  --font-sans:    'Zen Kaku Gothic New', 'Hiragino Kaku Gothic ProN', sans-serif;

  --ease: cubic-bezier(.22,.68,0,1);
}

*{ box-sizing:border-box; }

html{ scroll-behavior:smooth; }

body{
  background:var(--soft-white);
  color:var(--charcoal);
  font-family:var(--font-sans);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

::selection{ background:var(--cedar); color:var(--soft-white); }

/* custom scrollbar */
::-webkit-scrollbar{ width:10px; }
::-webkit-scrollbar-track{ background:var(--beige-2); }
::-webkit-scrollbar-thumb{ background:var(--stone); border-radius:0; }
::-webkit-scrollbar-thumb:hover{ background:var(--cedar); }

.font-display{ font-family:var(--font-display); }
.font-jp{ font-family:var(--font-jp); }

/* subtle grid / hatch texture overlay */
.hatch-bg{
  background-image:
    linear-gradient(135deg, rgba(35,33,31,0.05) 1px, transparent 1px),
    linear-gradient(45deg, rgba(35,33,31,0.05) 1px, transparent 1px);
  background-size: 26px 26px;
}
.grain{
  position:relative;
}
.grain::after{
  content:"";
  position:absolute; inset:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size:3px 3px;
  mix-blend-mode:overlay;
  opacity:.5;
}

/* =========================== NAV =========================== */
#site-nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  background:rgba(250,248,244,0.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:all .5s var(--ease);
}
#site-nav.scrolled{
  border-bottom:1px solid var(--line);
  box-shadow:0 8px 30px -12px rgba(35,33,31,0.15);
}
#site-nav a.nav-link{
  position:relative;
  color:var(--charcoal);
  letter-spacing:.04em;
}
#site-nav a.nav-link::after{
  content:"";
  position:absolute; left:0; bottom:-4px;
  width:0; height:1px; background:var(--cedar);
  transition:width .4s var(--ease);
}
#site-nav a.nav-link:hover::after,
#site-nav a.nav-link.active::after{ width:100%; }
#site-nav a.nav-link.active{ color:var(--cedar-dark); }

/* mobile slide panel */
#mobile-panel{
  position:fixed; top:0; right:0; height:100%; width:min(86vw,380px);
  background:var(--charcoal); color:var(--beige-2);
  transform:translateX(100%);
  transition:transform .55s var(--ease);
  z-index:200;
  display:flex; flex-direction:column;
}
#mobile-panel.open{ transform:translateX(0); }
#mobile-overlay{
  position:fixed; inset:0; background:rgba(35,33,31,0.5);
  opacity:0; pointer-events:none; transition:opacity .5s var(--ease);
  z-index:150;
  backdrop-filter:blur(2px);
}
#mobile-overlay.open{ opacity:1; pointer-events:auto; }
#mobile-panel a{
  border-bottom:1px solid rgba(233,225,211,0.12);
}

/* =========================== LOGO =========================== */
.hbv-logo-mark{ display:inline-block; }
.hbv-logo-mark rect,
.hbv-logo-mark line{ transition:opacity .6s var(--ease); }

/* =========================== BUTTONS =========================== */
.btn{
  display:inline-flex; align-items:center; gap:.6rem;
  padding:.9rem 1.9rem;
  font-family:var(--font-sans);
  letter-spacing:.08em;
  font-size:.8rem;
  text-transform:uppercase;
  border:1px solid var(--charcoal);
  position:relative;
  overflow:hidden;
  transition:color .5s var(--ease), border-color .5s var(--ease);
  z-index:1;
}
.btn::before{
  content:"";
  position:absolute; inset:0;
  background:var(--charcoal);
  transform:translateY(101%);
  transition:transform .5s var(--ease);
  z-index:-1;
}
.btn:hover::before{ transform:translateY(0); }
.btn:hover{ color:var(--soft-white); }
.btn-light{ border-color:var(--beige-2); color:var(--soft-white); }
.btn-light::before{ background:var(--beige-2); }
.btn-light:hover{ color:var(--charcoal); }
.btn-cedar{ border-color:var(--cedar); }
.btn-cedar::before{ background:var(--cedar); }
.btn-cedar:hover{ color:var(--soft-white); }

/* =========================== GLASS =========================== */
.glass{
  background:rgba(250,248,244,0.55);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border:1px solid rgba(255,255,255,0.4);
}
.glass-dark{
  background:rgba(35,33,31,0.45);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border:1px solid rgba(255,255,255,0.08);
}

/* =========================== REVEAL ANIM =========================== */
.reveal{
  opacity:0; transform:translateY(42px);
  transition:opacity 1s var(--ease), transform 1s var(--ease);
}
.reveal.is-visible{ opacity:1; transform:translateY(0); }
.reveal-scale{ opacity:0; transform:scale(.94); transition:opacity 1.1s var(--ease), transform 1.1s var(--ease); }
.reveal-scale.is-visible{ opacity:1; transform:scale(1); }
.stagger .reveal:nth-child(1){ transition-delay:.05s; }
.stagger .reveal:nth-child(2){ transition-delay:.15s; }
.stagger .reveal:nth-child(3){ transition-delay:.25s; }
.stagger .reveal:nth-child(4){ transition-delay:.35s; }
.stagger .reveal:nth-child(5){ transition-delay:.45s; }
.stagger .reveal:nth-child(6){ transition-delay:.55s; }

/* =========================== HERO =========================== */
.hero-wrap{ position:relative; overflow:hidden; }
.hero-img{
  position:absolute; inset:0; width:100%; height:100%;
  object-fit:cover;
  transform:scale(1.08);
  transition:transform 3.2s var(--ease);
}
.hero-wrap:hover .hero-img{ transform:scale(1.14); }
.hero-gradient{
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(35,33,31,0.35) 0%, rgba(35,33,31,0.35) 40%, rgba(35,33,31,0.85) 100%);
}
.parallax-layer{ will-change:transform; }

/* =========================== PAGE HERO (inner pages) =========================== */
.page-hero{ position:relative; overflow:hidden; }
.page-hero img{ object-fit:cover; }
.page-hero .hero-gradient{ background:linear-gradient(180deg, rgba(35,33,31,0.55), rgba(35,33,31,0.78)); }

/* =========================== CARDS =========================== */
.edit-card{
  position:relative; overflow:hidden;
  background:var(--soft-white);
  border:1px solid var(--line);
  transition:box-shadow .6s var(--ease), transform .6s var(--ease);
}
.edit-card:hover{
  box-shadow:0 30px 60px -25px rgba(35,33,31,0.35);
  transform:translateY(-6px);
}
.edit-card .img-wrap{ overflow:hidden; position:relative; }
.edit-card img{ transition:transform 1.1s var(--ease), filter .8s var(--ease); }
.edit-card:hover img{ transform:scale(1.08); }
.edit-card .num{ font-family:var(--font-display); color:var(--stone-light); }

/* =========================== MASONRY GALLERY =========================== */
.masonry{
  column-count:1; column-gap:1.1rem;
}
@media(min-width:640px){ .masonry{ column-count:2; } }
@media(min-width:1024px){ .masonry{ column-count:3; } }
.masonry .m-item{
  break-inside:avoid; margin-bottom:1.1rem; position:relative; overflow:hidden;
  cursor:zoom-in;
}
.masonry .m-item img{ width:100%; display:block; transition:transform 1s var(--ease), filter .6s var(--ease); }
.masonry .m-item:hover img{ transform:scale(1.06); }
.masonry .m-item .m-caption{
  position:absolute; inset:auto 0 0 0;
  padding:1rem 1.1rem;
  background:linear-gradient(0deg, rgba(35,33,31,0.85), transparent);
  color:var(--soft-white);
  transform:translateY(100%);
  transition:transform .5s var(--ease);
}
.masonry .m-item:hover .m-caption{ transform:translateY(0); }

/* lightbox */
#lightbox{
  position:fixed; inset:0; z-index:300;
  background:rgba(23,22,20,0.94);
  display:flex; align-items:center; justify-content:center;
  opacity:0; pointer-events:none; transition:opacity .5s var(--ease);
  padding:2rem;
}
#lightbox.open{ opacity:1; pointer-events:auto; }
#lightbox img{ max-width:min(92vw,1100px); max-height:86vh; box-shadow:0 40px 90px rgba(0,0,0,.5); }

/* =========================== ACCORDION (FAQ) =========================== */
.acc-item{ border-bottom:1px solid var(--line); }
.acc-head{ cursor:pointer; display:flex; align-items:center; justify-content:space-between; gap:1rem; }
.acc-icon{ position:relative; width:18px; height:18px; flex:none; }
.acc-icon::before, .acc-icon::after{
  content:""; position:absolute; background:var(--charcoal);
  transition:transform .4s var(--ease), opacity .4s var(--ease);
}
.acc-icon::before{ left:0; top:50%; width:100%; height:1px; transform:translateY(-50%); }
.acc-icon::after{ top:0; left:50%; width:1px; height:100%; transform:translateX(-50%); }
.acc-item.open .acc-icon::after{ transform:translateX(-50%) rotate(90deg); opacity:0; }
.acc-body{ max-height:0; overflow:hidden; transition:max-height .55s var(--ease), padding .55s var(--ease); }
.acc-item.open .acc-body{ padding-bottom:1.5rem; }

/* =========================== FORMS =========================== */
.field{
  width:100%; background:transparent;
  border:0; border-bottom:1px solid var(--line);
  padding:.9rem .2rem; font-family:var(--font-sans);
  transition:border-color .4s var(--ease);
}
.field:focus{ outline:none; border-color:var(--cedar); }
label.field-label{ font-size:.72rem; letter-spacing:.12em; color:var(--stone); text-transform:uppercase; }

/* =========================== TOAST (non-blocking popup) =========================== */
#toast-wrap{
  position:fixed; bottom:1.5rem; right:1.5rem; z-index:400;
  display:flex; flex-direction:column; gap:.6rem;
  max-width:min(92vw,360px);
}
.toast{
  background:var(--charcoal); color:var(--beige-2);
  padding:1rem 1.2rem; border-left:3px solid var(--cedar);
  box-shadow:0 20px 45px -18px rgba(0,0,0,.5);
  opacity:0; transform:translateY(16px) scale(.98);
  transition:opacity .45s var(--ease), transform .45s var(--ease);
  font-size:.86rem; letter-spacing:.02em;
}
.toast.show{ opacity:1; transform:translateY(0) scale(1); }

/* =========================== MISC =========================== */
.divider-line{ height:1px; background:var(--line); }
.vert-jp{ writing-mode:vertical-rl; letter-spacing:.3em; }
.section-label{
  font-size:.72rem; letter-spacing:.28em; text-transform:uppercase; color:var(--cedar-dark);
}
.num-index{ font-family:var(--font-display); font-size:.85rem; color:var(--stone); }

footer a:hover{ color:var(--cedar); }

.marquee{ display:flex; white-space:nowrap; animation:marquee 32s linear infinite; }
@keyframes marquee{ from{ transform:translateX(0);} to{ transform:translateX(-50%);} }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.01ms !important; transition-duration:.01ms !important; }
}