*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --ink:#1a1a1a;
  --cream:#faf8f5;
  --warm-white:#fff9f4;
  --muted:#6b6560;
  --accent:#c44b2b;
  --gold:#b8943e;
  --border:rgba(0,0,0,.1);
  --serif:'Cormorant Garamond',Georgia,serif;
  --sans:'DM Sans','Helvetica Neue',sans-serif;
  --radius:8px;
  --shadow-sm:0 1px 3px rgba(0,0,0,.06);
  --shadow-md:0 4px 12px rgba(0,0,0,.08);
  --shadow-lg:0 8px 24px rgba(0,0,0,.12);
}
html{font-size:18px;scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--cream);line-height:1.7;-webkit-font-smoothing:antialiased}

/* HEADER */
.header{
  display:flex;align-items:center;justify-content:space-between;
  padding:1.25rem 3rem;border-bottom:1px solid var(--border);
  background:var(--warm-white);position:sticky;top:0;z-index:100;
  backdrop-filter:blur(12px);
}
.header img{height:48px;width:auto}
.header-nav{display:flex;align-items:center;gap:2rem}
.header-nav a{
  font-size:.9rem;font-weight:500;letter-spacing:.03em;
  color:var(--muted);text-decoration:none;
  transition:color .15s ease;
}
.header-nav a:hover{color:var(--ink)}
.header-nav .nav-cta{
  background:var(--ink);color:#fff;
  padding:.55rem 1.4rem;border-radius:2rem;
  font-size:.85rem;letter-spacing:.05em;font-weight:600;
  transition:background .15s ease;
}
.header-nav .nav-cta:hover{background:var(--accent)}

/* HERO */
.hero{
  display:grid;grid-template-columns:1fr 1fr;min-height:520px;
  overflow:hidden;
}
.hero-text{
  display:flex;flex-direction:column;justify-content:center;
  padding:4rem 3.5rem;background:var(--ink);color:#fff;
}
.hero-text h1{
  font-family:var(--serif);font-size:3.4rem;font-weight:400;
  line-height:1.15;margin-bottom:1.2rem;letter-spacing:-.01em;
}
.hero-text h1 em{font-style:italic;color:var(--gold)}
.hero-text p{font-size:1.05rem;color:rgba(255,255,255,.7);max-width:440px;line-height:1.8;margin-bottom:2rem}
.hero-btn{
  display:inline-block;width:fit-content;
  padding:.85rem 2.2rem;border:1px solid rgba(255,255,255,.3);
  color:#fff;text-decoration:none;font-size:.95rem;font-weight:500;
  letter-spacing:.05em;border-radius:3px;
  transition:all .2s ease;
}
.hero-btn:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.5)}
.hero-img{position:relative;overflow:hidden}
.hero-img img{width:100%;height:100%;object-fit:cover;display:block}

/* SECTION */
.catalog-section{padding:4rem 3rem}
.catalog-section + .catalog-section{border-top:1px solid var(--border)}

.section-header{
  display:grid;grid-template-columns:1fr auto;align-items:end;
  margin-bottom:2.5rem;gap:1rem;
}
.section-header h2{
  font-family:var(--serif);font-size:2.6rem;font-weight:400;
  line-height:1.2;letter-spacing:-.01em;
}
.section-header h2 span{color:var(--accent)}
.section-header .badge{
  font-size:.8rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  background:var(--ink);color:#fff;padding:.45rem 1.1rem;border-radius:2rem;
  white-space:nowrap;align-self:center;
}

.product-meta{
  display:flex;gap:2.5rem;margin-bottom:2rem;flex-wrap:wrap;
}
.product-meta dt{font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-bottom:.25rem}
.product-meta dd{font-size:1rem;font-weight:500}

/* SIZE GRID */
.size-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(120px,1fr));
  gap:10px;
}
.size-chip{
  display:flex;align-items:center;justify-content:center;
  padding:.75rem .6rem;
  border:1px solid var(--border);
  border-radius:6px;
  font-size:.95rem;
  font-weight:500;
  letter-spacing:.02em;
  background:#fff;
  transition:all .15s ease;
  cursor:default;
}
.size-chip:hover{
  border-color:var(--accent);
  color:var(--accent);
  transform:translateY(-1px);
  box-shadow:0 2px 8px rgba(196,75,43,.1);
}
.size-chip::before{
  content:'';display:inline-block;width:10px;height:10px;
  border-radius:2px;margin-right:8px;flex-shrink:0;
}
.size-chip.square::before{background:var(--gold)}
.size-chip.standard::before{background:#5a8a4a}
.size-chip.pano::before{background:#4a6e8a}

/* ORIENTATION LEGEND */
.orient-row{
  display:flex;gap:1.5rem;margin-bottom:1.5rem;flex-wrap:wrap;align-items:center;
}
.orient-dot{
  display:flex;align-items:center;gap:6px;
  font-size:.85rem;color:var(--muted);letter-spacing:.03em;
}
.orient-dot span{display:inline-block;width:10px;height:10px;border-radius:2px}
.orient-dot.square span{background:var(--gold)}
.orient-dot.standard span{background:#5a8a4a}
.orient-dot.pano span{background:#4a6e8a}

/* ART PREVIEW */
.art-row{
  display:grid;grid-template-columns:200px 1fr;gap:2rem;
  align-items:start;margin-top:2.5rem;
  padding:1.5rem;background:var(--warm-white);border-radius:10px;
  border:1px solid var(--border);
}
.art-row img{width:100%;border-radius:6px;display:block}
.art-row-text h3{font-family:var(--serif);font-size:1.5rem;font-weight:400;margin-bottom:.5rem}
.art-row-text p{font-size:.95rem;color:var(--muted);line-height:1.7}

/* QUICK REF TABLE */
.quickref{
  margin-top:3rem;
  border:1px solid var(--border);border-radius:10px;overflow:hidden;
}
.quickref table{width:100%;border-collapse:collapse;font-size:.95rem}
.quickref thead{background:var(--ink);color:#fff}
.quickref th{padding:.9rem 1.1rem;text-align:left;font-weight:500;font-size:.82rem;letter-spacing:.06em;text-transform:uppercase}
.quickref td{padding:.7rem 1.1rem;border-bottom:1px solid var(--border)}
.quickref tr:last-child td{border-bottom:none}
.quickref tbody tr:nth-child(even){background:rgba(0,0,0,.02)}
.check{color:var(--accent);font-weight:700;font-size:1.1rem}
.dash{color:var(--border);font-size:1.1rem}

/* ===========================
   INVOICE REQUEST SECTION
   =========================== */
.request-section{
  background:var(--warm-white);
  border-top:2px solid var(--accent);
}
.request-intro{
  font-size:1.05rem;color:var(--muted);
  max-width:640px;line-height:1.8;margin-bottom:2.5rem;
}

/* Art Selection Grid */
.art-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(180px,1fr));
  gap:1.25rem;
  margin-bottom:2rem;
}
.art-card{
  position:relative;
  background:none;border:2px solid transparent;
  border-radius:var(--radius);overflow:hidden;
  cursor:pointer;padding:0;
  transition:all .2s ease;
  text-align:center;
  font-family:inherit;
}
.art-card:hover{
  border-color:var(--border);
  transform:translateY(-2px);
  box-shadow:var(--shadow-md);
}
.art-card.selected{
  border-color:var(--accent);
  box-shadow:0 0 0 1px var(--accent),var(--shadow-md);
}
.art-card-img{
  position:relative;
  aspect-ratio:1;
  overflow:hidden;
  background:var(--cream);
}
.art-card-img img{
  width:100%;height:100%;object-fit:cover;
  display:block;
  transition:transform .3s ease;
}
.art-card:hover .art-card-img img{transform:scale(1.04)}
.art-card-check{
  position:absolute;top:10px;right:10px;
  width:36px;height:36px;
  background:var(--accent);color:#fff;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  opacity:0;transform:scale(.6);
  transition:all .2s ease;
}
.art-card.selected .art-card-check{opacity:1;transform:scale(1)}
.art-card-name{
  display:block;
  padding:.7rem .5rem;
  font-size:.92rem;font-weight:500;
  color:var(--ink);
  letter-spacing:.02em;
}
.art-card.selected .art-card-name{color:var(--accent);font-weight:600}

/* ===========================
   PER-ART SELECTION BLOCKS
   =========================== */
.art-selections{
  display:flex;flex-direction:column;gap:1.5rem;
}
.art-selection{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  animation:fadeSlideIn .3s ease;
}
.art-selection-header{
  display:flex;align-items:center;gap:1rem;
  padding:1rem 1.25rem;
  background:rgba(0,0,0,.02);
  border-bottom:1px solid var(--border);
}
.art-selection-thumb{
  width:56px;height:56px;
  border-radius:6px;object-fit:cover;
  flex-shrink:0;
}
.art-selection-name{
  font-family:var(--serif);font-size:1.3rem;font-weight:400;
  flex:1;
}
.art-selection-remove{
  background:none;border:none;cursor:pointer;
  color:var(--muted);font-size:.85rem;font-weight:500;
  padding:.4rem .8rem;
  border-radius:4px;
  transition:all .15s;
  font-family:var(--sans);
}
.art-selection-remove:hover{color:var(--accent);background:rgba(196,75,43,.06)}

.art-selection-items{
  padding:.75rem 1.25rem 0;
  display:flex;flex-direction:column;gap:.6rem;
}
.line-item{
  display:grid;
  grid-template-columns:1fr 1fr 90px 44px;
  gap:.75rem;
  align-items:center;
  padding:.75rem 0;
  border-bottom:1px solid rgba(0,0,0,.04);
  animation:fadeSlideIn .25s ease;
}
.line-item:last-child{border-bottom:none}

.line-item select,
.line-item input[type="number"]{
  width:100%;
  padding:.65rem .75rem;
  border:1px solid var(--border);
  border-radius:5px;
  font-family:var(--sans);
  font-size:.95rem;
  background:#fff;
  color:var(--ink);
  transition:border-color .15s;
  min-height:48px;
}
.line-item select:focus,
.line-item input[type="number"]:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(196,75,43,.1);
}
.line-item input[type="number"]{
  text-align:center;
  -moz-appearance:textfield;
}
.line-item input[type="number"]::-webkit-inner-spin-button{-webkit-appearance:none}
.line-item-remove{
  background:none;border:none;cursor:pointer;
  color:var(--muted);font-size:1.4rem;
  padding:4px;transition:color .15s;
  font-family:var(--sans);
  display:flex;align-items:center;justify-content:center;
  min-height:48px;min-width:44px;
}
.line-item-remove:hover{color:var(--accent)}

.add-line-btn{
  display:block;
  width:100%;
  margin:0;
  padding:.75rem 1rem;
  background:none;border:none;border-top:1px dashed var(--border);
  font-family:var(--sans);font-size:.9rem;
  color:var(--muted);cursor:pointer;
  transition:all .15s;
  text-align:center;
}
.add-line-btn:hover{
  color:var(--accent);background:rgba(196,75,43,.03);
}

/* Contact Form */
.request-form{
  margin-top:2.5rem;
  animation:fadeSlideIn .3s ease;
}
.form-heading{
  font-family:var(--serif);font-size:1.6rem;font-weight:400;
  margin-bottom:1.5rem;
}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1.25rem 1.5rem;
  margin-bottom:2rem;
}
.form-field{display:flex;flex-direction:column;gap:.4rem}
.form-field.full-width{grid-column:1/-1}
.form-field label{
  font-size:.85rem;font-weight:600;letter-spacing:.04em;
  text-transform:uppercase;color:var(--muted);
}
.form-field label abbr{text-decoration:none;color:var(--accent)}
.form-field .optional{
  font-weight:400;text-transform:none;letter-spacing:0;
  font-size:.82rem;
}
.form-field input,
.form-field textarea{
  padding:.75rem 1rem;
  border:1px solid var(--border);
  border-radius:5px;
  font-family:var(--sans);
  font-size:1rem;
  color:var(--ink);
  background:#fff;
  transition:border-color .15s;
  min-height:48px;
}
.form-field input:focus,
.form-field textarea:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(196,75,43,.1);
}
.form-field textarea{resize:vertical;min-height:100px}

.submit-btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:1rem 2.8rem;
  background:var(--ink);color:#fff;
  border:none;border-radius:4px;
  font-family:var(--sans);font-size:1rem;font-weight:600;
  letter-spacing:.03em;cursor:pointer;
  transition:background .2s ease;
  min-height:52px;
}
.submit-btn:hover{background:var(--accent)}
.submit-btn:disabled{opacity:.6;cursor:not-allowed}

/* Success State */
.request-success{
  text-align:center;
  padding:3rem 1rem;
  animation:fadeSlideIn .4s ease;
}
.success-icon{
  color:var(--accent);margin-bottom:1.5rem;
}
.request-success h3{
  font-family:var(--serif);font-size:2rem;font-weight:400;
  margin-bottom:.8rem;
}
.request-success p{
  font-size:1.05rem;color:var(--muted);
  max-width:500px;margin:0 auto 2rem;line-height:1.8;
}
.reset-btn{
  padding:.8rem 2rem;
  background:none;border:1px solid var(--border);
  border-radius:4px;
  font-family:var(--sans);font-size:.95rem;font-weight:500;
  color:var(--ink);cursor:pointer;
  transition:all .15s;
  min-height:48px;
}
.reset-btn:hover{border-color:var(--ink)}

/* FOOTER */
.footer{
  padding:3rem;background:var(--ink);color:rgba(255,255,255,.55);
  text-align:center;font-size:.9rem;
}
.footer a{color:var(--gold);text-decoration:none}

/* ANIMATIONS */
@keyframes fadeSlideIn{
  from{opacity:0;transform:translateY(10px)}
  to{opacity:1;transform:translateY(0)}
}

/* ===========================
   RESPONSIVE — TABLET
   =========================== */
@media(max-width:900px){
  html{font-size:17px}
  .art-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
  .line-item{
    grid-template-columns:1fr 1fr 80px 44px;
  }
}

/* ===========================
   RESPONSIVE — MOBILE
   =========================== */
@media(max-width:768px){
  html{font-size:16px}
  .header{padding:1rem 1.25rem}
  .header img{height:40px}
  .header-nav{gap:.8rem}
  .header-nav a:not(.nav-cta){display:none}
  .header-nav .nav-cta{padding:.5rem 1.1rem;font-size:.82rem}

  .hero{grid-template-columns:1fr;min-height:auto}
  .hero-text{padding:2.5rem 1.5rem}
  .hero-text h1{font-size:2.4rem}
  .hero-text p{font-size:1rem}
  .hero-btn{padding:.75rem 1.8rem;font-size:.9rem}
  .hero-img{max-height:300px}

  .catalog-section{padding:2.5rem 1.25rem}
  .section-header{margin-bottom:2rem}
  .section-header h2{font-size:2rem}
  .product-meta{gap:1.5rem}
  .product-meta dt{font-size:.75rem}
  .product-meta dd{font-size:.95rem}

  .art-row{grid-template-columns:1fr;gap:1.25rem}
  .size-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:8px}

  .art-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:1rem}
  .art-card-name{font-size:.88rem;padding:.6rem .4rem}

  .form-grid{grid-template-columns:1fr}
  .form-field input,
  .form-field textarea{font-size:16px} /* prevents iOS zoom */

  .art-selection-header{padding:.85rem 1rem}
  .art-selection-thumb{width:48px;height:48px}
  .art-selection-name{font-size:1.15rem}
  .art-selection-items{padding:.6rem 1rem 0}

  .line-item{
    grid-template-columns:1fr 1fr;
    gap:.6rem;
  }
  .line-item select{grid-column:1/-1}
  .line-item input[type="number"]{grid-column:1;justify-self:start;width:90px}
  .line-item-remove{grid-column:2;justify-self:end}

  .quickref table{font-size:.88rem}
  .quickref th{padding:.7rem .8rem;font-size:.75rem}
  .quickref td{padding:.6rem .8rem}
}

@media(max-width:500px){
  .art-grid{grid-template-columns:repeat(2,1fr);gap:.75rem}
  .hero-text h1{font-size:2rem}
}