/* =========================================================
   TKB Industries — landing.css
   Design direction: Kelvin Property-inspired (navy + bronze)
   ========================================================= */

:root{
  --bg:#F5F2EA;
  --surface:#FFFFFF;
  --ink:#182324;
  --accent:#BF8A4A;
  --accent-soft:#D7B37D;
  --accent-ink:#182324;
  --muted:#6F7B7C;
  --line:#DCD8CF;
  --ground:#102A2D;
  --ground-2:#18383C;
  --ground-3:#0A1E21;
  --ground-ink:#FFFFFF;
  --ground-muted:#9FB3B4;

  --font-display:'Manrope', sans-serif;
  --font-body:'DM Sans', sans-serif;

  --sp-sm:8px;
  --sp-md:16px;
  --sp-lg:32px;
  --sp-xl:64px;
  --sp-2xl:96px;

  --r-sm:12px;
  --r-md:24px;
  --r-lg:34px;
  --r-pill:999px;

  --container:1200px;
  --shadow-float:0 24px 60px -20px rgba(10,30,33,0.35);
  --shadow-card:0 10px 15px -3px rgba(10,30,33,0.12), 0 4px 6px -4px rgba(10,30,33,0.1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; scroll-behavior:auto !important; }
}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-weight:400;
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.1;
  margin:0 0 var(--sp-md);
  letter-spacing:-0.02em;
}
h1{ font-size:clamp(2.4rem,5vw,4.1rem); }
h2{ font-size:clamp(1.8rem,3.2vw,2.5rem); }
h3{ font-size:1.2rem; font-weight:700; letter-spacing:-0.01em; }
h4{ font-size:1.05rem; font-weight:700; }

p{ margin:0 0 var(--sp-md); max-width:66ch; color:var(--muted); }
a{ color:inherit; }
img{ max-width:100%; display:block; }
button{ font-family:inherit; }

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--sp-lg);
}
@media (max-width:640px){
  .container{ padding:0 var(--sp-md); }
}

.eyebrow{
  font-family:var(--font-display);
  font-size:0.78rem;
  font-weight:700;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--accent);
  margin-bottom:var(--sp-sm);
  display:inline-flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:'';
  display:inline-block;
  width:16px;
  height:1px;
  background:var(--accent);
  flex:none;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  font-family:var(--font-body);
  font-weight:700;
  font-size:0.98rem;
  text-decoration:none;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease, background-color .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
  white-space:nowrap;
}
.btn:active{ transform:scale(0.97); }
.btn-primary{ background:var(--accent); color:var(--accent-ink); box-shadow:var(--shadow-card); }
.btn-primary:hover{ background:var(--accent-soft); transform:translateY(-2px); }
.btn-ghost{ background:transparent; color:var(--ink); border-color:var(--accent); }
.btn-ghost:hover{ background:var(--accent); color:var(--accent-ink); transform:translateY(-2px); }
.btn-ghost-light{ background:rgba(255,255,255,0.1); color:var(--ground-ink); border-color:rgba(255,255,255,0.35); backdrop-filter:blur(10px); }
.btn-ghost-light:hover{ background:var(--ground-ink); color:var(--ground); }
.btn-block{ width:100%; }

.hero-ctas .btn-ghost{ background:rgba(255,255,255,0.1); color:#fff; border-color:rgba(255,255,255,0.35); backdrop-filter:blur(10px); }
.hero-ctas .btn-ghost:hover{ background:#fff; color:var(--ground); }

html:not(.js) .reveal{ opacity:1 !important; transform:none !important; }
.js .reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .7s ease, transform .7s ease;
}
.js .reveal.is-visible{ opacity:1; transform:none; }

.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(245,242,234,0.92);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 3px rgba(10,30,33,0.06);
}
.site-header .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:76px;
}
.logo{
  font-family:var(--font-display);
  font-weight:800;
  font-size:1.15rem;
  letter-spacing:-0.01em;
  text-decoration:none;
  color:var(--ink);
}
.logo span{ color:var(--accent); }
.main-nav{ display:flex; align-items:center; gap:var(--sp-lg); }
.main-nav ul{ list-style:none; display:flex; gap:28px; margin:0; padding:0; }
.main-nav a{ text-decoration:none; font-size:0.92rem; font-weight:600; color:var(--ink); }
.main-nav a:hover{ color:var(--accent); }
.nav-toggle{
  display:none;
  background:none; border:none; cursor:pointer; padding:8px;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  display:block; width:22px; height:2px; background:var(--ink); position:relative; transition:transform .2s ease;
}
.nav-toggle span::before, .nav-toggle span::after{ content:''; position:absolute; left:0; }
.nav-toggle span::before{ top:-7px; }
.nav-toggle span::after{ top:7px; }

@media (max-width:860px){
  .main-nav ul{
    position:fixed; inset:76px 0 auto 0; background:var(--bg);
    flex-direction:column; gap:0; border-bottom:1px solid var(--line);
    visibility:hidden; opacity:0; pointer-events:none;
    transition:opacity .2s ease, visibility .2s ease;
  }
  .main-nav.is-open ul{ visibility:visible; opacity:1; pointer-events:auto; }
  .main-nav ul li{ border-top:1px solid var(--line); }
  .main-nav ul a{ display:block; padding:18px var(--sp-lg); }
  .main-nav .btn{ display:none; }
  .nav-toggle{ display:block; }
}

.hero{
  position:relative;
  background:var(--ground);
  color:var(--ground-ink);
  overflow:hidden;
  padding:var(--sp-2xl) 0 calc(var(--sp-2xl) + 20px);
}
.hero::after{
  content:'';
  position:absolute;
  inset:0;
  z-index:1;
  background:linear-gradient(180deg, rgba(10,30,33,.55) 0%, rgba(10,30,33,.72) 55%, rgba(10,30,33,.94) 100%);
}
.hero .container{
  display:block;
  max-width:760px;
}
.hero-copy{ position:relative; z-index:2; }
.hero-copy .eyebrow{ color:var(--accent-soft); }
.hero-copy .eyebrow::before{ background:var(--accent-soft); }
.hero-copy h1{ color:#fff; max-width:16ch; }
.hero-copy p{ color:rgba(255,255,255,0.82); font-size:1.08rem; max-width:44ch; }
.hero-ctas{ display:flex; gap:16px; margin-top:var(--sp-lg); flex-wrap:wrap; }

.hero-photo{ position:absolute; inset:0; z-index:0; margin:0; }
.hero-photo img{ width:100%; height:100%; object-fit:cover; border-radius:0; box-shadow:none; display:block; }
.hero-stat-card{
  position:static;
  display:inline-flex;
  align-items:center;
  gap:14px;
  margin-top:var(--sp-lg);
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.18);
  backdrop-filter:blur(10px);
  border-radius:var(--r-sm);
  padding:16px 22px;
  max-width:none;
}
.hero-stat-card .num{ font-family:var(--font-display); font-weight:800; font-size:1.2rem; line-height:1; color:#fff; }
.hero-stat-card .lbl{ font-size:0.82rem; color:rgba(255,255,255,0.7); margin-top:4px; }

.hero-art{
  position:relative;
  aspect-ratio:4/5;
  border-radius:var(--r-md);
  overflow:visible;
}
.hero-art svg{ width:110%; max-width:none; margin-left:-5%; display:block; }

.trust{ background:var(--bg); border-bottom:none; padding:var(--sp-xl) 0; }
.trust .container{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--sp-lg);
}
.trust-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:20px;
  padding:28px 26px;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.trust-item:hover{ transform:translateY(-4px); box-shadow:var(--shadow-float); border-color:var(--accent); }
.trust-item h4{ font-family:var(--font-display); font-weight:800; font-size:1.4rem; margin-bottom:8px; color:var(--ground); }
.trust-item p{ font-size:0.92rem; margin:0; }
@media (max-width:720px){ .trust .container{ grid-template-columns:1fr; gap:var(--sp-md); } }

section{ padding:var(--sp-2xl) 0; }
.section-head{ max-width:640px; margin-bottom:var(--sp-xl); }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

.projects-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--sp-lg);
}
@media (max-width:960px){
  .projects-grid{ grid-template-columns:1fr; }
}

.project-card{
  position:relative;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  min-height:460px;
  background:var(--ground-3);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.project-card:hover{ transform:translateY(-6px); box-shadow:0 20px 45px rgba(10,30,33,0.4); border-color:var(--accent); }
.project-media{
  position:absolute;
  inset:0;
  z-index:0;
  aspect-ratio:auto;
}
.project-media svg{ width:100%; height:100%; display:block; }
.project-media img{ width:100%; height:100%; object-fit:cover; display:block; }
.project-media::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(10,30,33,0) 25%, rgba(10,30,33,.85) 82%, rgba(10,30,33,.97) 100%);
}
.project-status{
  position:absolute; top:16px; left:16px; z-index:2;
  background:rgba(10,30,33,0.65);
  color:#fff;
  backdrop-filter:blur(6px);
  font-family:var(--font-display);
  font-size:0.72rem; font-weight:700; letter-spacing:0.04em;
  padding:6px 14px; border-radius:var(--r-pill);
}
.project-status.selling{ background:var(--accent); color:var(--accent-ink); }
.project-body{
  position:relative;
  z-index:2;
  padding:var(--sp-lg);
  display:flex;
  flex-direction:column;
  gap:6px;
  color:#fff;
}
.project-body .eyebrow{ color:var(--accent-soft); margin-bottom:0; }
.project-body .eyebrow::before{ background:var(--accent-soft); }
.project-body .loc{ font-size:0.85rem; color:rgba(255,255,255,0.72); }
.project-body h3{ margin:2px 0 0; color:#fff; }
.project-body .type{ font-size:0.86rem; color:rgba(255,255,255,0.72); }
.project-body p{ color:rgba(255,255,255,0.78); font-size:0.92rem; margin:4px 0; }
.project-body .price{ font-family:var(--font-display); font-weight:800; font-size:1.1rem; margin-top:6px; padding-top:0; color:#fff; }
.project-body .price span{ color:rgba(255,255,255,0.62); font-family:var(--font-body); font-weight:400; font-size:0.85rem; }
.project-body .btn{ margin-top:12px; align-self:flex-start; padding:10px 22px; font-size:0.86rem; }
.project-body .btn-ghost{ border-color:rgba(255,255,255,0.45); color:#fff; }
.project-body .btn-ghost:hover{ background:#fff; color:var(--ground); }

.why-grid{ display:grid; grid-template-columns:0.9fr 1.1fr; gap:var(--sp-xl); align-items:start; }
.why-list{ display:flex; flex-direction:column; gap:var(--sp-lg); }
.why-item{ display:flex; gap:18px; }
.why-num{
  font-family:var(--font-display); font-weight:800; font-size:0.95rem; color:var(--accent);
  flex:none; width:40px; height:40px; border-radius:50%;
  background:var(--surface); border:1px solid var(--line);
  display:inline-flex; align-items:center; justify-content:center;
}
.why-item h3{ margin-bottom:4px; }
.why-item p{ margin:0; font-size:0.95rem; }
@media (max-width:860px){ .why-grid{ grid-template-columns:1fr; } }

.process{ background:var(--surface); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.process-row{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:var(--sp-md);
}
.process-step{
  border-top:none;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:20px;
  padding:22px 18px;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.process-step:hover{ transform:translateY(-4px); box-shadow:var(--shadow-float); border-color:var(--accent); }
.process-step .n{
  font-family:var(--font-display); font-weight:800; color:var(--accent-ink); font-size:1.05rem;
  display:inline-flex; align-items:center; justify-content:center;
  width:34px; height:34px; border-radius:50%; background:var(--accent);
  margin-bottom:10px;
}
.process-step h4{ font-size:1rem; margin-bottom:4px; }
.process-step p{ font-size:0.86rem; margin:0; }
@media (max-width:920px){ .process-row{ grid-template-columns:repeat(2,1fr); gap:var(--sp-lg); } }

.calculator{ background:var(--bg); }
.calc-panel{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--shadow-float);
}
.calc-inputs{ padding:var(--sp-xl); border-right:1px solid var(--line); }
.calc-results{ padding:var(--sp-xl); background:var(--ground); color:var(--ground-ink); display:flex; flex-direction:column; }
@media (max-width:860px){
  .calc-panel{ grid-template-columns:1fr; }
  .calc-inputs{ border-right:none; border-bottom:1px solid var(--line); }
}

.field{ margin-bottom:var(--sp-lg); }
.field label{ display:flex; justify-content:space-between; font-size:0.9rem; font-weight:700; margin-bottom:8px; }
.field label .val{ color:var(--accent); font-family:var(--font-display); }
.field input[type=range]{
  width:100%; accent-color:var(--accent); height:4px;
}
.field .hint{ font-size:0.8rem; color:var(--muted); margin-top:6px; }
.field input[type=text],
.field input[type=number]{
  width:100%; padding:12px 14px; border:1px solid var(--line); border-radius:var(--r-sm);
  font-size:1rem; font-family:var(--font-body); background:var(--surface); color:var(--ink);
}
.field input:focus, .field textarea:focus{ outline:none; border-color:var(--accent); box-shadow:0 0 0 3px rgba(191,138,74,0.2); }

.calc-headline{ font-family:var(--font-display); font-size:0.85rem; letter-spacing:0.08em; text-transform:uppercase; color:var(--ground-muted); margin-bottom:8px; font-weight:700; }
.calc-figure{ font-family:var(--font-display); font-weight:800; font-size:clamp(2.4rem,4vw,3.2rem); line-height:1; margin-bottom:var(--sp-lg); }
.calc-figure span{ font-size:1.4rem; color:var(--ground-muted); font-weight:600; margin-right:6px; }
.calc-breakdown{ display:flex; flex-direction:column; gap:12px; border-top:1px solid rgba(255,255,255,0.15); padding-top:var(--sp-lg); margin-bottom:var(--sp-lg); }
.calc-breakdown div{ display:flex; justify-content:space-between; font-size:0.92rem; color:var(--ground-muted); }
.calc-breakdown div b{ color:var(--ground-ink); font-weight:600; }
.calc-note{ font-size:0.78rem; color:var(--ground-muted); margin-top:auto; }

.lead-capture{ margin-top:var(--sp-xl); border-top:1px solid var(--line); padding-top:var(--sp-xl); }
.lead-capture h3{ margin-bottom:6px; }
.lead-form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:var(--sp-md); margin-top:var(--sp-lg); }
.lead-form-grid .full{ grid-column:1/-1; }
@media (max-width:640px){ .lead-form-grid{ grid-template-columns:1fr; } }

.form-msg{ font-size:0.9rem; margin-top:var(--sp-md); display:none; padding:12px 16px; border-radius:var(--r-sm); }
.form-msg.show{ display:block; }
.form-msg.ok{ background:rgba(191,138,74,0.1); color:var(--accent); }
.form-msg.err{ background:rgba(146,62,62,0.08); color:#923E3E; }

.faq-list{ border-top:1px solid var(--line); }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-q{
  width:100%; text-align:left; background:none; border:none; cursor:pointer;
  display:flex; justify-content:space-between; align-items:center;
  padding:22px 0; font-family:var(--font-display); font-weight:700; font-size:1.02rem; color:var(--ink);
}
.faq-q .icon{ font-size:1.3rem; color:var(--accent); transition:transform .25s ease; flex:none; margin-left:16px; }
.faq-item.is-open .faq-q .icon{ transform:rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .3s ease; }
.faq-item.is-open .faq-a{ max-height:240px; }
.faq-a p{ padding-bottom:22px; margin:0; max-width:70ch; }

.contact{ background:var(--surface); border-top:1px solid var(--line); }
.contact-grid{ display:grid; grid-template-columns:0.9fr 1.1fr; gap:var(--sp-xl); }
.contact-info h2{ margin-bottom:var(--sp-md); }
.contact-list{ display:flex; flex-direction:column; gap:var(--sp-md); margin-top:var(--sp-xl); }
.contact-list div{ border-top:1px solid var(--line); padding-top:12px; }
.contact-list b{ display:block; font-family:var(--font-display); font-weight:700; margin-bottom:4px; }
.contact-list span{ color:var(--muted); font-size:0.92rem; }
.contact-form .field textarea{
  width:100%; padding:12px 14px; border:1px solid var(--line); border-radius:var(--r-sm);
  font-family:var(--font-body); font-size:1rem; resize:vertical;
}
@media (max-width:860px){ .contact-grid{ grid-template-columns:1fr; } }

.site-footer{ background:var(--ground); color:var(--ground-ink); padding:var(--sp-xl) 0 var(--sp-lg); }
.footer-top{ display:flex; justify-content:space-between; gap:var(--sp-xl); flex-wrap:wrap; padding-bottom:var(--sp-xl); border-bottom:1px solid rgba(255,255,255,0.12); }
.footer-brand .logo{ color:var(--ground-ink); }
.footer-brand p{ color:var(--ground-muted); max-width:32ch; margin-top:var(--sp-sm); font-size:0.92rem; }
.footer-cols{ display:flex; gap:var(--sp-xl); flex-wrap:wrap; }
.footer-col b{ font-family:var(--font-display); font-weight:700; display:block; margin-bottom:14px; font-size:0.9rem; }
.footer-col a{ display:block; color:var(--ground-muted); text-decoration:none; font-size:0.9rem; margin-bottom:10px; }
.footer-col a:hover{ color:var(--accent-soft); }
.footer-bottom{ display:flex; justify-content:space-between; padding-top:var(--sp-lg); font-size:0.82rem; color:var(--ground-muted); flex-wrap:wrap; gap:8px; }

.wa-float{
  position:fixed; right:22px; bottom:22px; z-index:200;
  width:56px; height:56px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 12px 28px rgba(10,30,33,0.35);
  transition:transform .2s ease;
}
.wa-float:hover{ transform:translateY(-3px) scale(1.05); }

.page-hero{ background:var(--ground); color:var(--ground-ink); padding:var(--sp-2xl) 0 var(--sp-xl); }
.page-hero .eyebrow{ color:var(--accent-soft); font-style:normal; text-transform:uppercase; letter-spacing:0.14em; }
.page-hero .eyebrow::before{ background:var(--accent-soft); }
.page-hero h1{ color:var(--ground-ink); max-width:20ch; }
.page-hero p{ color:var(--ground-muted); max-width:56ch; font-size:1.05rem; }
.project-hero-loc{ color:var(--ground-muted); margin:0; font-size:0.95rem; }

.filter-tabs{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom:var(--sp-xl); }
.filter-tab{
  font-family:var(--font-display); font-weight:700; font-size:0.88rem;
  padding:10px 22px; border-radius:var(--r-pill); border:1px solid var(--line);
  background:var(--surface); color:var(--muted); cursor:pointer; transition:background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
}
.filter-tab:hover{ border-color:var(--accent); color:var(--ink); transform:translateY(-2px); }
.filter-tab.is-active{ background:var(--accent); color:var(--accent-ink); border-color:var(--accent); }
.projects-grid-full{ grid-template-columns:repeat(3,1fr); }
@media (max-width:960px){ .projects-grid-full{ grid-template-columns:1fr; } }
.project-card-wrap[hidden]{ display:none; }
.filter-empty{ text-align:center; color:var(--muted); padding:var(--sp-xl) 0; }

.project-detail-grid{ display:grid; grid-template-columns:1fr 1fr; gap:var(--sp-xl); align-items:start; }
.project-detail-media{ border-radius:var(--r-md); overflow:hidden; aspect-ratio:4/3; box-shadow:var(--shadow-float); }
.project-detail-media svg{ display:block; width:100%; height:auto; }
.project-detail-media img{ display:block; width:100%; height:100%; object-fit:cover; }
.project-detail-blurb{ font-size:1.05rem; color:var(--ink); max-width:none; }
.project-spec-list{ margin:var(--sp-lg) 0; border-top:1px solid var(--line); }
.project-spec-list div{ display:flex; justify-content:space-between; gap:16px; padding:14px 0; border-bottom:1px solid var(--line); }
.project-spec-list dt{ font-family:var(--font-display); font-weight:700; color:var(--muted); margin:0; flex:none; }
.project-spec-list dd{ margin:0; text-align:right; font-weight:600; }
@media (max-width:860px){ .project-detail-grid{ grid-template-columns:1fr; } }

.lead-capture-section{ background:var(--surface); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.lead-capture-section .contact-form{ margin-top:var(--sp-lg); }

.cta-banner{
  max-width:var(--container); margin:0 auto; background:var(--ground); color:var(--ground-ink);
  border-radius:var(--r-md); padding:var(--sp-xl); display:flex; align-items:center; justify-content:space-between; gap:32px;
}
.cta-banner p{ color:var(--ground-muted); margin:6px 0 0; }
.cta-banner h2{ color:var(--ground-ink); margin:0; }
@media (max-width:720px){ .cta-banner{ flex-direction:column; text-align:center; padding:var(--sp-lg); } }

.why-visual{ border-radius:var(--r-md); overflow:hidden; box-shadow:var(--shadow-float); aspect-ratio:4/5; }
.why-visual img{ display:block; width:100%; height:100%; object-fit:cover; }
@media (max-width:860px){ .why-visual{ aspect-ratio:16/10; } }

.trust-icon{ display:block; margin-bottom:6px; }