:root{--ink:#20322e;--cream:#f6f1e8;--paper:#fffdf8;--orange:#e95c2b;--yellow:#f2bd3b;--sage:#ccd6bd;--muted:#67726d}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--cream);color:var(--ink);font-family:Manrope,Arial,sans-serif}.top-strip{height:35px;background:var(--ink);color:#e7ebdf;padding:0 7vw;display:flex;align-items:center;justify-content:space-between;font-size:11px;font-weight:700;letter-spacing:.04em}.top-strip a{color:#f2bd3b;text-decoration:none}.nav-wrap{height:88px;background:var(--paper);padding:0 7vw;display:flex;align-items:center;justify-content:space-between;position:relative;z-index:10}.brand{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink);font-family:"Plus Jakarta Sans";font-size:19px;line-height:16px;letter-spacing:-.06em}.brand b{color:var(--orange)}.brand small{font:7px Manrope;letter-spacing:.18em;display:block;color:#7c827a;margin-top:4px}.brand-mark{background:var(--orange);height:34px;width:34px;display:grid;grid-template-columns:repeat(3,1fr);gap:2px;padding:6px}.brand-mark i{background:#fff3d7}.brand-mark i:first-child{grid-row:span 2}.brand-mark i:last-child{grid-row:span 2}nav{display:flex;gap:29px}nav a,.text-link{font-size:13px;font-weight:700;color:var(--ink);text-decoration:none}.nav-cta{color:var(--paper);background:var(--ink);font-size:12px;font-weight:800;text-decoration:none;padding:13px 17px}.nav-cta span{color:var(--yellow);font-size:17px;margin-left:6px}.menu-toggle{display:none}.hero{min-height:560px;display:grid;grid-template-columns:54% 46%;background:var(--paper);overflow:hidden}.hero-copy{padding:92px 7vw 65px;position:relative;z-index:2}.eyebrow{font:700 10px "DM Mono";letter-spacing:.13em;color:var(--orange);margin:0 0 17px}.hero h1,h2{font:800 clamp(42px,5vw,70px)/.98 "Plus Jakarta Sans";letter-spacing:-.075em;margin:0}.hero h1 em,h2 em{font-family:Georgia,serif;font-weight:400;color:var(--orange);letter-spacing:-.07em}.hero-text{line-height:1.75;color:#56615d;font-size:14px;max-width:440px;margin:25px 0}.hero-actions{display:flex;gap:12px}.button{display:inline-flex;align-items:center;justify-content:center;gap:18px;padding:15px 19px;text-decoration:none;font-size:12px;font-weight:800;border:none;cursor:pointer}.orange{background:var(--orange);color:white}.button span{font-size:17px}.ghost{border:1px solid #c9ccc4;color:var(--ink)}.hero-trust{display:flex;align-items:center;gap:10px;margin-top:50px;font-size:10px;line-height:1.5}.hero-trust p{margin:0}.avatars{display:flex}.avatars span{border:2px solid var(--paper);width:25px;height:25px;border-radius:50%;display:grid;place-items:center;color:white;background:#547063;font-size:9px;margin-right:-7px}.avatars span:nth-child(2){background:#e8803d}.avatars span:nth-child(3){background:#b69552}.hero-art{background:#c8d2b9;position:relative;min-height:560px;overflow:hidden}.sun{position:absolute;width:300px;height:300px;background:#e9b93d;border-radius:50%;right:-35px;top:-100px}.arch{position:absolute;border:20px solid #9eaf91;border-bottom:0;border-radius:190px 190px 0 0;width:280px;height:360px;bottom:-90px;left:50px}.arch-b{left:275px;bottom:-145px;border-color:#dae0ca;width:260px}.brick-stack{position:absolute;bottom:25px;left:13%;width:430px;filter:drop-shadow(0 20px 13px #44544444);transform:rotate(-3deg)}.brick{display:flex;gap:7px;margin-bottom:7px;justify-content:center}.brick i{height:61px;flex:1;background:linear-gradient(135deg,#d55b35,#b9482a);border-radius:2px;box-shadow:inset 0 -8px #a83e26}.brick.row1{padding:0 71px}.brick.row2{padding:0 0}.brick.row3{padding:0 50px}.brick.row4{padding:0 0}.scribble{position:absolute;right:30px;top:150px;font:italic 17px Georgia;color:#314334;transform:rotate(-10deg)}.scribble b{font:700 14px Manrope}.availability{position:absolute;right:35px;bottom:42px;background:#fffdf8;padding:13px 18px 11px 36px;font-size:10px;line-height:1.6;box-shadow:0 8px 20px #60715533}.availability small{display:block;color:#68716c}.pulse{position:absolute;left:15px;top:17px;width:9px;height:9px;border-radius:50%;background:#5ca064}.ticker{overflow:hidden;background:var(--orange);color:white;height:47px;display:flex;align-items:center;white-space:nowrap;font:800 14px "Plus Jakarta Sans";letter-spacing:.07em}.ticker div{animation:scroll 22s linear infinite}.ticker b{color:var(--yellow);padding:0 16px}@keyframes scroll{to{transform:translateX(-35%)}}.section{padding:105px 7vw}.section-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:39px}.section-head h2{font-size:48px}.section-head>p{font-size:13px;line-height:1.8;color:#66716b;max-width:330px}.product-grid{display:grid;grid-template-columns:1.15fr 1fr 1fr 1fr;gap:13px}.product-card{background:#fffdf8;min-height:300px;padding:27px;position:relative;display:flex;flex-direction:column}.product-card.featured{background:var(--orange);color:white}.product-card.accent{background:#bfcfb4}.product-card h3{font:800 20px "Plus Jakarta Sans";letter-spacing:-.05em;margin:22px 0 7px}.product-card p{font-size:11px;line-height:1.7;margin:0;max-width:220px;opacity:.8}.product-icon{height:51px;width:66px;display:flex;gap:3px;align-items:flex-end}.brick-icon i{width:18px;height:19px;background:#f2c449}.brick-icon i:nth-child(2),.brick-icon i:nth-child(4){height:31px}.featured .brick-icon i{background:#fff0c9}.aac-icon{background:#cbd5c2;padding:8px;gap:8px}.aac-icon i{display:block;width:22px;height:32px;background:#71866b}.hollow-icon i{width:18px;height:38px;background:#d66d45}.hollow-icon i:nth-child(2){height:26px}.rod-icon i{height:45px;width:7px;background:#597161;transform:skew(-10deg)}.tag{position:absolute;right:19px;top:18px;font:700 8px "DM Mono";background:#f3c34b;color:#5a3c20;padding:5px}.price{margin-top:auto;font-size:11px;display:flex;align-items:end;gap:5px}.price b{font:800 20px "Plus Jakarta Sans";letter-spacing:-.06em}.price small{margin-bottom:3px}.price button{margin-left:auto;background:none;border:0;font:800 11px Manrope;color:inherit;cursor:pointer;padding:4px 0}.calculator{background:var(--ink);color:#fbf7ec;display:grid;grid-template-columns:43% 57%;gap:50px}.calculator .eyebrow{color:var(--yellow)}.calc-copy h2{font-size:48px}.calc-copy h2 em{color:var(--yellow)}.calc-copy>p{font-size:13px;line-height:1.8;max-width:350px;color:#cbd3c8;margin:23px 0}.calc-note{margin-top:38px;display:flex;gap:13px;font-size:11px;line-height:1.7}.calc-note span{color:var(--yellow)}.calc-note p{margin:0}.calculator-card{background:var(--paper);color:var(--ink);padding:28px}.calc-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:23px}.calc-heading h3{font:800 19px "Plus Jakarta Sans";letter-spacing:-.06em;margin:0}.calc-heading span{font:600 8px "DM Mono";color:#668665;background:#dce7d4;padding:6px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.form-grid label{font-size:10px;font-weight:800}.form-grid label span{color:#86908b;font-weight:500}select,input{display:block;width:100%;margin-top:7px;border:1px solid #d8d9d3;background:#fff;padding:12px 10px;color:#34443d;font:11px Manrope;outline-color:var(--orange)}.result{background:#eff2e9;margin-top:23px;padding:18px;display:grid;grid-template-columns:1fr 1fr}.result div+div{border-left:1px solid #d0d6c9;padding-left:21px}.result span{display:block;color:#718078;font-size:10px;margin-bottom:3px}.result b,.result strong{font:800 21px "Plus Jakarta Sans";letter-spacing:-.06em}.result strong{color:var(--orange)}.disclaimer{color:#7a847e;font-size:9px;margin:14px 0}.full{width:100%}.gallery{background:#fdf8ee}.gallery-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:13px}.gallery-item{height:340px;padding:20px;position:relative;overflow:hidden;color:white;background-color:#5d7667}.gallery-item:before{content:"";position:absolute;inset:0;background:linear-gradient(0deg,#142c26cc,transparent 60%)}.gallery-item>*{position:relative}.gallery-item span{font:600 10px "DM Mono"}.gallery-item p{position:absolute;bottom:12px;font:400 18px Georgia;line-height:1.2}.gallery-item b{font:800 17px "Plus Jakarta Sans"}.g1{background:linear-gradient(135deg,#cd5831 0 35%,#ad432b 35% 40%,#d46d42 40% 70%,#b1482b 70%);background-size:90px 75px}.g2{background:linear-gradient(145deg,#76936f,#39594d)}.g2:after{content:"";position:absolute;width:180px;height:180px;border-radius:50%;border:28px solid #dce7ca;top:62px;left:25px;opacity:.7}.g3{background:linear-gradient(135deg,#dca239,#edc65b 45%,#a75d2e 46% 54%,#dd7a3e 55%)}.why{display:grid;grid-template-columns:43% 57%;gap:90px}.why-visual{min-height:420px;background:var(--sage);position:relative;display:grid;place-items:center;overflow:hidden}.seal{height:166px;width:166px;border-radius:50%;background:var(--orange);border:9px double #f6c04d;display:grid;place-content:center;text-align:center;color:white;font:800 16px "Plus Jakarta Sans";letter-spacing:-.05em;line-height:1.1;transform:rotate(-12deg);z-index:2}.seal b{color:#ffd464}.mini-bricks{position:absolute;bottom:-25px;left:-20px;right:-20px;display:flex;gap:8px;transform:rotate(-5deg)}.mini-bricks i{height:80px;flex:1;background:#af472d}.why-copy h2{font-size:47px;margin-bottom:27px}.benefit{display:flex;gap:21px;border-top:1px solid #d8d7cc;padding:15px 0}.benefit span{font:600 10px "DM Mono";color:var(--orange)}.benefit p{font-size:12px;line-height:1.75;margin:0;color:#707873}.benefit b{color:var(--ink);font-size:13px}.contact{background:var(--yellow);padding:75px 7vw;display:flex;justify-content:space-between;align-items:end}.contact h2{font-size:52px}.contact h2 em{color:var(--orange)}.contact-right{text-align:right}.phone{font:800 28px "Plus Jakarta Sans";letter-spacing:-.07em;color:var(--ink);text-decoration:none}.phone span{color:var(--orange)}.contact-right p{font-size:11px;line-height:1.8;margin:16px 0 0}footer{padding:30px 7vw;background:var(--ink);display:flex;align-items:center;justify-content:space-between;color:#bdc7bc;font-size:10px}footer .brand{color:white}footer a:last-child{color:#f0be3d;text-decoration:none;font-weight:800}.chat-fab{position:fixed;right:24px;bottom:24px;border:0;background:var(--ink);color:white;padding:14px 18px;box-shadow:0 8px 20px #1d312955;border-radius:2px;font:800 12px Manrope;z-index:20;cursor:pointer}.chat-fab span{color:var(--yellow);font-size:17px;margin-right:4px}.chat-panel{position:fixed;right:24px;bottom:82px;width:min(360px,calc(100vw - 32px));background:#fffdf8;box-shadow:0 17px 60px #1a292550;z-index:20;display:none}.chat-panel.open{display:block}.chat-top{background:var(--ink);color:white;padding:15px;display:flex;justify-content:space-between}.chat-top div{display:grid;grid-template-columns:27px 1fr;align-items:center;column-gap:8px;font-size:12px}.chat-logo{grid-row:span 2;background:var(--orange);width:27px;height:27px;display:grid;place-items:center}.chat-top small{color:#bdc6ba;font-size:9px}.close-chat{border:0;background:none;color:white;font-size:24px;cursor:pointer}.messages{height:250px;overflow:auto;padding:15px;background:#f6f1e8}.message{font-size:12px;line-height:1.6;padding:10px 12px;margin-bottom:9px;max-width:85%;width:max-content}.bot{background:white}.user{background:#dce6d3;margin-left:auto}.chat-form{display:flex;padding:10px;border-top:1px solid #e4e1d8}.chat-form input{margin:0;border:0;background:transparent;padding:8px;flex:1}.chat-form button{border:0;background:var(--orange);color:white;width:33px;cursor:pointer}
@media(max-width:800px){.top-strip{padding:0 5vw}.nav-wrap{height:73px;padding:0 5vw}nav,.nav-cta{display:none}.menu-toggle{display:block;border:0;background:none;font-size:20px}.nav-wrap.open nav{display:flex;position:absolute;top:73px;left:0;right:0;padding:25px 5vw;background:#fffdf8;flex-direction:column;gap:20px}.hero{grid-template-columns:1fr}.hero-copy{padding:65px 6vw 48px}.hero-art{min-height:380px}.brick-stack{left:4%;transform:scale(.78);transform-origin:left bottom}.sun{width:220px;height:220px}.arch-b{display:none}.section{padding:70px 6vw}.section-head{display:block}.section-head>p{margin-top:15px}.product-grid{grid-template-columns:1fr 1fr}.product-card{min-height:260px;padding:20px}.calculator,.why{grid-template-columns:1fr;gap:42px}.calculator-card{padding:20px}.gallery-grid{grid-template-columns:1fr 1fr}.g1{grid-column:span 2}.why-visual{min-height:300px}.contact{display:block;padding:58px 6vw}.contact-right{text-align:left;margin-top:33px}footer{padding:25px 6vw;gap:15px;flex-wrap:wrap}.section-head h2,.calc-copy h2,.why-copy h2{font-size:40px}.contact h2{font-size:44px}}@media(max-width:450px){.top-strip{font-size:9px}.top-strip a{font-size:0}.top-strip a:after{content:'Call us';font-size:9px}.hero h1{font-size:46px}.hero-art{min-height:325px}.brick-stack{transform:scale(.61)}.availability{right:16px;bottom:20px}.scribble{right:18px;top:90px}.product-grid,.form-grid{grid-template-columns:1fr}.product-card{min-height:225px}.gallery-grid{display:block}.gallery-item{height:250px;margin-bottom:12px}.g1{height:300px}.phone{font-size:24px}.contact h2{font-size:39px}}

/* Clean masonry mark: four blocks frame a small open centre square. */
.brand-mark{grid-template-rows:repeat(3,1fr)}.brand-mark i:first-child,.brand-mark i:nth-child(3){grid-row:span 3}.brand-mark i:nth-child(2){grid-column:2;grid-row:1}.brand-mark i:nth-child(4){grid-column:2;grid-row:3}

.yard-gallery{background:#fffdf8}.yard-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.yard-image{height:180px;margin:0;position:relative;overflow:hidden;background:#e4e9e1}.yard-image img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}.yard-image:hover img{transform:scale(1.07)}.yard-image figcaption{position:absolute;inset:auto 0 0;padding:24px 12px 10px;background:linear-gradient(transparent,#122721c9);color:white;font-size:10px;font-weight:800}.yard-image.y1,.yard-image.y2{grid-column:span 2;height:260px}.yard-image.y4{grid-column:span 2}.yard-image.y7{grid-column:span 2}.yard-image.y11{grid-column:span 2}@media(max-width:800px){.yard-grid{grid-template-columns:repeat(2,1fr)}.yard-image,.yard-image.y1,.yard-image.y2,.yard-image.y4,.yard-image.y7,.yard-image.y11{grid-column:auto;height:180px}.yard-image.y1,.yard-image.y2{height:225px}}@media(max-width:450px){.yard-grid{grid-template-columns:1fr}.yard-image,.yard-image.y1,.yard-image.y2,.yard-image.y4,.yard-image.y7,.yard-image.y11{height:230px}}

/* Material movement: grey fly-ash bricks and AAC blocks (no red-brick imagery). */
.brick i{background:linear-gradient(135deg,#c3c8c5,#7d8986);box-shadow:inset 0 -8px #687572}.brick-stack{animation:stack-arrive 4.8s ease-in-out infinite}.brick.row1 i{animation:flyash-load 4.8s ease-in-out infinite}.brick.row2 i{animation:flyash-load 4.8s .18s ease-in-out infinite}.brick.row3 i{animation:flyash-load 4.8s .36s ease-in-out infinite}.brick.row4 i{animation:flyash-load 4.8s .54s ease-in-out infinite}.featured .brick-icon i{background:#b6bfbc;animation:flyash-load 3s ease-in-out infinite}.aac-icon i{animation:aac-slide 3.2s ease-in-out infinite}.aac-icon i:nth-child(2){animation-delay:.34s}.g1{background-image:url('aac-blocks-stacked.png')}.g2{background-image:url('flyash-hollow-block.png');background-position:center}.g3{background-image:url('flyash-bricks-stack.png');background-position:center}.g4{background-image:url('interlocking-blocks.png');background-position:center}.g1,.g2,.g3,.g4{background-size:cover}.g2:after{display:none}.mini-bricks i{background:#89938f}.comparison{background:#e4eadb;display:grid;grid-template-columns:37% 63%;gap:55px}.comparison-intro h2{font-size:46px}.comparison-intro>p:not(.eyebrow){font-size:13px;line-height:1.8;color:#53625c;margin:20px 0 29px;max-width:320px}.strength-callout{display:grid;grid-template-columns:56px 82px 1fr;align-items:center;background:var(--ink);color:white;padding:16px 14px;margin:23px 0 18px;max-width:390px}.strength-callout span{font:700 9px "DM Mono";color:var(--yellow);letter-spacing:.08em}.strength-callout b{font:800 58px/.8 "Plus Jakarta Sans";letter-spacing:-.09em;color:var(--yellow)}.strength-callout p{font:800 13px/1.1 "Plus Jakarta Sans";letter-spacing:-.04em;margin:0}.strength-callout small{display:block;color:#c0cac1;font:9px/1.4 Manrope;letter-spacing:0;margin-top:7px}.comparison-table{background:#fffdf8;padding:0 26px}.compare-head,.compare-row{display:grid;grid-template-columns:25% 38% 37%;gap:12px}.compare-head{padding:17px 0;color:#65726b;font:700 10px "DM Mono";text-transform:uppercase;letter-spacing:.03em}.compare-head b{color:var(--orange)}.compare-row{border-top:1px solid #e0e0d9;padding:17px 0;font-size:11px;line-height:1.65;color:#69746d}.compare-row b{color:var(--ink);font-size:12px}.compare-row span:first-of-type{color:#315643;font-weight:700}.compare-note{margin:0 -26px;padding:13px 26px;background:#f2bd3b;font-size:9px;line-height:1.5;color:#39453f}@keyframes flyash-load{0%,58%,100%{transform:translateX(0);filter:brightness(1)}25%{transform:translateX(23px);filter:brightness(1.1)}43%{transform:translateX(0);filter:brightness(1)}}@keyframes stack-arrive{0%,100%{transform:rotate(-3deg) translateY(0)}50%{transform:rotate(-3deg) translateY(-5px)}}@keyframes aac-slide{0%,100%{transform:translateX(0)}45%{transform:translateX(8px)}70%{transform:translateX(0)}}@media(prefers-reduced-motion:reduce){.brick-stack,.brick i,.featured .brick-icon i,.aac-icon i{animation:none!important}}@media(max-width:800px){.gallery-grid{grid-template-columns:1fr 1fr}.g4{grid-column:span 2}.comparison{grid-template-columns:1fr;gap:35px}.comparison-intro h2{font-size:40px}}@media(max-width:450px){.g4{grid-column:auto}.compare-head{display:none}.compare-row{grid-template-columns:1fr;padding:16px 0;gap:5px}.compare-row span:before{font:700 8px "DM Mono";display:block;text-transform:uppercase;letter-spacing:.06em;color:#839087}.compare-row span:first-of-type:before{content:'Fly ash bricks'}.compare-row span:last-of-type:before{content:'Traditional red bricks'}}

/* ═══ Hero Brick Wall — 3D Running Bond Masonry & Physics Engine ═══ */
.wall-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* Material Switcher & Animation Control Pills */
.wall-controls {
  position: absolute;
  top: 22px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(28, 43, 39, 0.88);
  backdrop-filter: blur(10px);
  padding: 6px 10px;
  border-radius: 30px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
  width: max-content;
  max-width: 92vw;
}

.material-pills {
  display: flex;
  align-items: center;
  gap: 4px;
}

.mat-btn {
  background: transparent;
  border: 0;
  color: #aebdb6;
  font: 700 11px Manrope, sans-serif;
  padding: 6px 12px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.2,0.8,0.2,1);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.mat-btn:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.mat-btn.active {
  background: #ffffff;
  color: #1e302b;
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(0,0,0,0.18);
}

.pill-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.2);
}

.pill-dot.flyash { background: #96a19c; }
.pill-dot.aac { background: #e3e8e5; }
.pill-dot.hollow { background: #4f5754; }
.pill-dot.clay { background: #e25e34; }

.wall-act-btn {
  background: rgba(233, 92, 43, 0.95);
  color: #ffffff;
  border: 0;
  font: 800 11px Manrope, sans-serif;
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex;
  align-items: center;
  gap: 5px;
}

.wall-act-btn:hover {
  background: var(--orange);
  transform: scale(1.04);
  box-shadow: 0 4px 14px rgba(233, 92, 43, 0.4);
}

.wall-act-btn i {
  font-style: normal;
  display: inline-block;
  transition: transform 0.5s ease;
}

.wall-act-btn:hover i {
  transform: rotate(180deg);
}

/* 3D Wall Canvas & Staggered Running Bond Layout */
.hero-wall-wrapper {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 3;
}

/* Laser Alignment Line */
.laser-guide {
  position: absolute;
  left: -20px;
  right: -20px;
  top: 0;
  height: 2px;
  pointer-events: none;
  z-index: 12;
  opacity: 0;
  transition: top 0.35s ease, opacity 0.3s ease;
}

.laser-guide.active {
  opacity: 1;
}

.laser-line {
  display: block;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #22c55e 15%, #86efac 50%, #22c55e 85%, transparent);
  box-shadow: 0 0 8px #22c55e, 0 0 16px #22c55e;
}

.laser-label {
  position: absolute;
  right: -5px;
  top: -18px;
  font: 700 8px "DM Mono", monospace;
  background: #142822;
  color: #4ade80;
  border: 1px solid #22c55e;
  padding: 2px 6px;
  border-radius: 3px;
  letter-spacing: 0.08em;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.hero-wall {
  transform-style: preserve-3d;
  transform: perspective(900px) rotateX(5deg) rotateY(-1.5deg);
  display: flex;
  flex-direction: column;
  gap: 3.5px;
  background: #545148;
  padding: 5px;
  border-radius: 4px;
  box-shadow:
    0 24px 40px rgba(18, 30, 22, 0.4),
    inset 0 0 12px rgba(0, 0, 0, 0.4);
  position: relative;
  transition: transform 0.4s ease;
}

.hero-wall:hover {
  transform: perspective(900px) rotateX(3deg) rotateY(0deg) scale(1.01);
}

.hw-row {
  display: flex;
  gap: 3.5px;
  justify-content: center;
  position: relative;
  transform-style: preserve-3d;
}

/* Individual 3D Brick Element */
.hw {
  width: 96px;
  height: 42px;
  position: relative;
  transform-style: preserve-3d;
  opacity: 0;
  cursor: pointer;
  transition: filter 0.25s ease, transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.hw.half {
  width: 46.25px;
}

.hw:hover {
  transform: translateZ(14px) scale(1.05) !important;
  filter: brightness(1.18) contrast(1.05) !important;
  z-index: 20;
}

.hw .ff {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  position: relative;
  border-radius: 2px;
  transform-style: preserve-3d;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.28),
    inset 0 -3px 4px rgba(0, 0, 0, 0.18),
    inset 2px 0 3px rgba(0, 0, 0, 0.08),
    inset -2px 0 3px rgba(0, 0, 0, 0.08);
}

/* Frogged indentation with CV stamp */
.hw .ff small {
  font: 900 8.5px "Plus Jakarta Sans", sans-serif;
  letter-spacing: 0.12em;
  opacity: 0.35;
  background: rgba(0, 0, 0, 0.09);
  padding: 3px 7px;
  border-radius: 1.5px;
  box-shadow:
    inset 1px 1px 2px rgba(0, 0, 0, 0.35),
    inset -1px -1px 1px rgba(255, 255, 255, 0.2);
  user-select: none;
  pointer-events: none;
}

.hw.half .ff small {
  font-size: 7px;
  padding: 2px 3px;
  letter-spacing: 0.05em;
}

/* Top Face */
.hw .ft {
  position: absolute;
  width: 100%;
  height: 18px;
  left: 0;
  top: 0;
  transform-origin: top center;
  transform: rotateX(90deg);
  border-radius: 2px 2px 0 0;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

/* Right Face */
.hw .fr {
  position: absolute;
  width: 18px;
  height: 100%;
  right: 0;
  top: 0;
  transform-origin: right center;
  transform: rotateY(-90deg);
  border-radius: 0 2px 2px 0;
  box-shadow: inset -1px 0 0 rgba(0, 0, 0, 0.15);
}

/* ═══ Material Themes ═══ */

/* 1. Fly Ash Slate Grey (Default) */
.theme-flyash .hw .ff {
  background: linear-gradient(172deg, #bdc4c0 0%, #a1aba6 40%, #87928d 75%, #76817c 100%);
  color: #3b4642;
}
.theme-flyash .hw .ft {
  background: linear-gradient(180deg, #d3dad6 0%, #b6beb9 100%);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-bottom: none;
}
.theme-flyash .hw .fr {
  background: linear-gradient(180deg, #85908b 0%, #65706b 100%);
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-left: none;
}

/* 2. AAC Insulated Block (Crisp White / Silver) */
.theme-aac .hw .ff {
  background: linear-gradient(172deg, #f3f6f4 0%, #e2e7e4 45%, #d1d8d4 80%, #c4ccc8 100%);
  color: #495450;
}
.theme-aac .hw .ft {
  background: linear-gradient(180deg, #ffffff 0%, #e9efec 100%);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-bottom: none;
}
.theme-aac .hw .fr {
  background: linear-gradient(180deg, #c7cfcb 0%, #b2bbb7 100%);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-left: none;
}

/* 3. Hollow Block (Charcoal Cavity Concrete) */
.theme-hollow .hw .ff {
  background: linear-gradient(172deg, #676e6b 0%, #545b58 45%, #444b48 80%, #383d3b 100%);
  color: #a7b3ae;
}
.theme-hollow .hw .ff small {
  background: rgba(0,0,0,0.45);
  color: #838e8a;
  box-shadow: inset 2px 2px 4px rgba(0,0,0,0.6);
}
.theme-hollow .hw .ft {
  background: linear-gradient(180deg, #7c8582 0%, #606865 100%);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-bottom: none;
}
.theme-hollow .hw .fr {
  background: linear-gradient(180deg, #424946 0%, #2f3432 100%);
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-left: none;
}

/* 4. Red Clay Terracotta */
.theme-clay .hw .ff {
  background: linear-gradient(172deg, #e36843 0%, #cb4f2a 45%, #b13a17 80%, #9c2c0b 100%);
  color: #ffd8cb;
}
.theme-clay .hw .ft {
  background: linear-gradient(180deg, #f17853 0%, #d75a35 100%);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-bottom: none;
}
.theme-clay .hw .fr {
  background: linear-gradient(180deg, #a73514 0%, #852409 100%);
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-left: none;
}

/* Interactive Brick Inspector Tooltip */
.brick-tooltip {
  position: absolute;
  z-index: 25;
  background: rgba(18, 30, 26, 0.94);
  color: #ffffff;
  backdrop-filter: blur(10px);
  padding: 10px 14px;
  border-radius: 8px;
  font: 11px/1.5 Manrope, sans-serif;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 10px 25px rgba(0,0,0,0.35);
  pointer-events: none;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  white-space: nowrap;
}

.brick-tooltip.show {
  opacity: 1;
  transform: translateY(0);
}

.brick-tooltip b {
  color: var(--yellow);
  display: block;
  font-family: "Plus Jakarta Sans", sans-serif;
  font-size: 12px;
}

.brick-tooltip span {
  color: #a1b0a8;
  font-size: 10px;
}

/* Wall Build Completion Badge */
.build-status {
  position: absolute;
  bottom: 25px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  z-index: 15;
  background: rgba(255, 255, 255, 0.96);
  color: #1c2e28;
  padding: 9px 18px;
  border-radius: 30px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(34, 197, 94, 0.3);
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.build-status.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.status-icon {
  width: 24px;
  height: 24px;
  background: #22c55e;
  color: white;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 900;
  font-size: 12px;
}

.build-status b {
  font: 800 11px "Plus Jakarta Sans", sans-serif;
  letter-spacing: -0.02em;
  display: block;
  line-height: 1.2;
}

.build-status small {
  color: #65736d;
  font-size: 9.5px;
}

/* Mini Calculator Wall Visualizer */
.calc-wall-preview {
  margin: 16px 0 4px;
  padding: 12px;
  background: #172622;
  border-radius: 6px;
  display: flex;
  flex-direction: column-reverse;
  gap: 3px;
  max-height: 120px;
  overflow: hidden;
  box-shadow: inset 0 2px 6px rgba(0,0,0,0.4);
}

.calc-pv-row {
  display: flex;
  gap: 3px;
  justify-content: center;
}

.calc-pv-brick {
  height: 12px;
  flex: 1;
  background: linear-gradient(135deg, #a3ad8d, #7c8782);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
  animation: pv-pop 0.3s ease forwards;
}

.calc-pv-brick.half {
  flex: 0.5;
}

@keyframes pv-pop {
  0% { transform: scale(0.7); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

/* Hero Wall Responsive Adjustments */
@media (max-width: 800px) {
  .hero-wall-wrapper {
    bottom: 15px;
  }
  .hero-wall {
    transform: perspective(800px) rotateX(4deg) scale(0.68);
    transform-origin: center bottom;
  }
  .hw { width: 75px; height: 34px; }
  .hw.half { width: 36px; }
  .hw .ft { height: 14px; }
  .hw .fr { width: 14px; }
  .wall-controls { top: 12px; transform: translateX(-50%) scale(0.9); }
}

@media (max-width: 450px) {
  .hero-wall-wrapper {
    bottom: 10px;
  }
  .hero-wall {
    transform: perspective(600px) rotateX(4deg) scale(0.46);
    transform-origin: center bottom;
  }
  .hw { width: 62px; height: 28px; }
  .hw.half { width: 29.5px; }
  .hw .ft { height: 11px; }
  .hw .fr { width: 11px; }
  .wall-controls { top: 8px; transform: translateX(-50%) scale(0.8); }
  .mat-btn { padding: 5px 8px; font-size: 10px; }
}