/* =========================================================
   MOBILE BLAUSTRADE GROUP — Design Tokens
   Base: charcoal / off-black / white, single amber accent
   Type: Oswald (display, condensed industrial) + Inter (body)
   ========================================================= */
:root{
  --c-black:        #101215;
  --c-charcoal:      #1A1D21;
  --c-charcoal-2:    #24282D;
  --c-steel:         #3A4048;
  --c-line:          #33383E;
  --c-white:         #F6F5F1;
  --c-off:           #C9CBCE;
  --c-muted:         #9A9EA4;
  --c-accent:        #E4A13B;
  --c-accent-dark:   #B87A21;
  --c-accent-soft:   #F4D9A8;

  --font-display: 'Oswald', sans-serif;
  --font-body: 'Inter', sans-serif;

  --radius-sm: 2px;
  --radius-md: 3px;
  --shadow-card: 0 18px 40px -22px rgba(0,0,0,0.55);
  --ease: cubic-bezier(.4,0,.2,1);
}

*{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  font-family: var(--font-body);
  color: var(--c-charcoal);
  background: var(--c-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.2px;
  line-height: 1.12;
  margin: 0;
  color: var(--c-black);
}

p{ margin: 0; }

a{ text-decoration: none; color: inherit; }

img{ max-width: 100%; display: block; }

:focus-visible{
  outline: 3px solid var(--c-accent);
  outline-offset: 3px;
}

.skip-link{
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--c-accent);
  color: var(--c-black);
  padding: 12px 18px;
  z-index: 2000;
  font-weight: 600;
}
.skip-link:focus{ left: 12px; top: 12px; }

.container{ max-width: 1240px; }

/* ---------- Reusable type ---------- */
.eyebrow{
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 3px;
  font-weight: 500;
  color: var(--c-accent);
  margin-bottom: 14px;
  text-transform: uppercase;
}
.eyebrow-dark{ color: var(--c-accent-dark); }

.section-title{
  font-size: clamp(1.9rem, 3vw, 2.75rem);
  max-width: 620px;
  margin-bottom: 22px;
}
.section-title-light{ color: var(--c-white); }

.section-text{
  color: var(--c-steel);
  font-size: 1.02rem;
  max-width: 560px;
  margin-bottom: 16px;
}
.section-text-light{ color: var(--c-off); }
.section-text-center{ max-width: 640px; margin-left: auto; margin-right: auto; }

.section-head{ text-align: left; margin-bottom: 48px; }
.services-section .section-head,
.process-section .section-head{ text-align: center; }
.services-section .section-head .section-title,
.process-section .section-head .section-title{ margin-left: auto; margin-right: auto; }

section{ padding: 100px 0; }

/* Buttons */
.btn-primary-cta{
  background: var(--c-accent);
  color: var(--c-black);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.4px;
  padding: 15px 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-accent);
  transition: transform .25s var(--ease), background .25s var(--ease), box-shadow .25s var(--ease);
}
.btn-primary-cta:hover{
  background: var(--c-accent-dark);
  border-color: var(--c-accent-dark);
  color: var(--c-black);
  transform: translateY(-2px);
  box-shadow: 0 14px 28px -12px rgba(180,120,20,0.45);
}

.btn-outline-cta{
  background: transparent;
  color: var(--c-white);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.4px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(246,245,241,0.4);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: border-color .25s var(--ease), background .25s var(--ease), transform .25s var(--ease);
}
.btn-outline-cta:hover{
  border-color: var(--c-white);
  background: rgba(246,245,241,0.08);
  color: var(--c-white);
  transform: translateY(-2px);
}

.btn-quote{
  background: var(--c-accent);
  color: var(--c-black);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.4px;
  padding: 11px 24px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: background .2s var(--ease);
}
.btn-quote:hover{ background: var(--c-accent-dark); color: var(--c-black); }

/* =========================================================
   HEADER
   ========================================================= */
.site-header{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(16,18,21,0.0);
  transition: background .35s var(--ease), box-shadow .35s var(--ease), padding .35s var(--ease);
  padding: 22px 0;
}
.site-header.scrolled{
  background: rgba(16,18,21,0.96);
  box-shadow: 0 10px 30px -20px rgba(0,0,0,0.6);
  padding: 12px 0;
  backdrop-filter: blur(6px);
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand{
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-mark{
  width: 34px; height: 34px;
  border: 2px solid var(--c-accent);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}
.brand-mark::before{
  content:"";
  position: absolute;
  inset: 7px;
  background: var(--c-accent);
  clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
}
.brand-text{
  font-family: var(--font-display);
  color: var(--c-white);
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: 1px;
  line-height: 1.05;
  display: flex;
  flex-direction: column;
}
.brand-thin{ font-weight: 300; color: var(--c-off); }
.brand-sub{ font-size: 0.62rem; letter-spacing: 3px; color: var(--c-accent); margin-top: 2px; }

.primary-nav{
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav-list{
  list-style: none;
  display: flex;
  gap: 34px;
  margin: 0; padding: 0;
}
.nav-link-custom{
  font-family: var(--font-display);
  color: var(--c-off);
  font-size: 0.92rem;
  letter-spacing: 0.6px;
  position: relative;
  padding-bottom: 4px;
  transition: color .2s var(--ease);
}
.nav-link-custom::after{
  content:"";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--c-accent);
  transition: width .25s var(--ease);
}
.nav-link-custom:hover{ color: var(--c-white); }
.nav-link-custom:hover::after{ width: 100%; }

.nav-toggle{
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
}
.nav-toggle span{
  display: block;
  height: 2px;
  background: var(--c-white);
  border-radius: 2px;
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.nav-toggle.active span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2){ opacity: 0; }
.nav-toggle.active span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  color: var(--c-white);
  overflow: hidden;
}
.hero-media{
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-media img{
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-overlay{
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(10,11,13,0.94) 0%, rgba(10,11,13,0.78) 42%, rgba(10,11,13,0.55) 68%, rgba(10,11,13,0.35) 100%),
    linear-gradient(0deg, rgba(10,11,13,0.6) 0%, rgba(10,11,13,0.1) 30%);
}
.hero-content{
  position: relative;
  z-index: 1;
  padding-top: 120px;
  max-width: 760px;
}
.hero-title{
  font-size: clamp(2.4rem, 5.4vw, 4.2rem);
  color: var(--c-white);
  margin-bottom: 24px;
}
.hero-lead{
  font-size: 1.1rem;
  color: var(--c-off);
  max-width: 560px;
  margin-bottom: 38px;
}
.hero-cta{
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 64px;
}
.hero-stats{
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.stat{ display: flex; flex-direction: column; }
.stat-num{
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--c-accent);
  letter-spacing: 0.5px;
}
.stat-label{
  font-size: 0.8rem;
  color: var(--c-muted);
  letter-spacing: 0.4px;
}
.stat-divider{
  width: 1px; height: 34px;
  background: rgba(246,245,241,0.2);
}

/* =========================================================
   PAGE BANNER (inner pages)
   ========================================================= */
.page-banner{
  position: relative;
  min-height: 46vh;
  display: flex;
  align-items: flex-end;
  color: var(--c-white);
  overflow: hidden;
  padding-bottom: 56px;
}
.page-banner .hero-media img{ width: 100%; height: 100%; object-fit: cover; }
.page-banner-content{ position: relative; z-index: 1; padding-top: 140px; }
.breadcrumb-trail{
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.5px;
  color: var(--c-off);
}
.breadcrumb-trail a{ color: var(--c-off); transition: color .2s var(--ease); }
.breadcrumb-trail a:hover{ color: var(--c-accent); }
.breadcrumb-trail li:not(:last-child)::after{
  content: "/";
  margin-left: 10px;
  color: var(--c-muted);
}
.breadcrumb-trail li.current{ color: var(--c-accent); }
.page-banner-title{
  font-size: clamp(2.1rem, 4.4vw, 3.4rem);
  color: var(--c-white);
  max-width: 680px;
}
.page-banner-lead{
  color: var(--c-off);
  max-width: 560px;
  margin-top: 16px;
  font-size: 1.02rem;
}

/* Nav active state */
.nav-link-custom.active{ color: var(--c-white); }
.nav-link-custom.active::after{ width: 100%; }

/* Section link row (home services teaser) */
.section-head-row{
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 48px;
}
.section-head-row .section-head{ margin-bottom: 0; }
.view-all-link{
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.5px;
  color: var(--c-accent-dark);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 8px;
  transition: gap .2s var(--ease), color .2s var(--ease);
}
.view-all-link:hover{ gap: 12px; color: var(--c-accent); }

/* =========================================================
   TRUST / INTRO
   ========================================================= */
.trust-section{ background: var(--c-white); }
.trust-image{
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.trust-image img{ width: 100%; height: 460px; object-fit: cover; }

.check-list{
  list-style: none;
  padding: 0; margin: 26px 0 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.check-list li{
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--c-charcoal);
  font-weight: 500;
}
.check-list i{
  color: var(--c-accent);
  background: rgba(228,161,59,0.12);
  border-radius: 50%;
  width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* =========================================================
   SERVICES
   ========================================================= */
.services-section{ background: #EFEDE7; }

.service-card{
  background: var(--c-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.service-card:hover{
  transform: translateY(-6px);
  box-shadow: 0 26px 46px -20px rgba(0,0,0,0.35);
}
.service-img{ height: 210px; overflow: hidden; }
.service-img img{ width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.service-card:hover .service-img img{ transform: scale(1.06); }
.service-body{ padding: 28px 26px 30px; }
.service-body h3{ font-size: 1.25rem; margin-bottom: 10px; }
.service-body p{ color: var(--c-steel); font-size: 0.95rem; margin-bottom: 18px; }
.service-link{
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.5px;
  color: var(--c-accent-dark);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: gap .2s var(--ease), color .2s var(--ease);
}
.service-link:hover{ gap: 12px; color: var(--c-accent); }

/* =========================================================
   WHY CHOOSE US
   ========================================================= */
.why-section{ background: var(--c-black); }
.why-section .section-head{ text-align: left; }
.why-card{
  background: var(--c-charcoal);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  padding: 34px 28px;
  height: 100%;
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}
.why-card:hover{ border-color: var(--c-accent); transform: translateY(-4px); }
.why-card i{ font-size: 1.6rem; color: var(--c-accent); margin-bottom: 18px; display: block; }
.why-card h3{ color: var(--c-white); font-size: 1.15rem; margin-bottom: 10px; }
.why-card p{ color: var(--c-muted); font-size: 0.94rem; }

/* =========================================================
   PROJECTS
   ========================================================= */
.projects-section{ background: var(--c-white); }

.filter-bar{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}
.filter-btn{
  font-family: var(--font-display);
  background: transparent;
  border: 1px solid var(--c-line);
  color: var(--c-steel);
  padding: 9px 22px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  letter-spacing: 0.4px;
  cursor: pointer;
  transition: all .2s var(--ease);
}
.filter-btn:hover{ border-color: var(--c-accent); color: var(--c-black); }
.filter-btn.active{ background: var(--c-black); border-color: var(--c-black); color: var(--c-white); }

.masonry-grid{
  columns: 3 260px;
  column-gap: 22px;
}
.masonry-item{
  break-inside: avoid;
  margin: 0 0 22px;
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.masonry-item img{ width: 100%; display: block; height: 260px; object-fit: cover; transition: transform .5s var(--ease); }
.masonry-item.tall img{ height: 380px; }
.masonry-item figcaption{
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 22px 20px 18px;
  background: linear-gradient(0deg, rgba(10,11,13,0.92) 0%, rgba(10,11,13,0) 100%);
  color: var(--c-white);
  font-family: var(--font-display);
  font-size: 1.02rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.masonry-item figcaption span{
  display: block;
  font-size: 0.7rem;
  letter-spacing: 2px;
  color: var(--c-accent);
  margin-bottom: 4px;
  text-transform: uppercase;
}
.masonry-item:hover img{ transform: scale(1.08); }
.masonry-item:hover figcaption{ opacity: 1; transform: translateY(0); }
.masonry-item.hidden{ display: none; }

/* =========================================================
   PROCESS
   ========================================================= */
.process-section{ background: #EFEDE7; }
.process-track{
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 22px;
}
.process-step{
  padding: 26px 20px;
  border-top: 3px solid var(--c-accent);
  background: var(--c-white);
}
.process-index{
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--c-accent-dark);
  letter-spacing: 1px;
  display: block;
  margin-bottom: 14px;
}
.process-step h3{ font-size: 1.05rem; margin-bottom: 8px; }
.process-step p{ font-size: 0.88rem; color: var(--c-steel); }

/* =========================================================
   ABOUT
   ========================================================= */
.about-section{ background: var(--c-white); }
.about-image{ border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-card); }
.about-image img{ width: 100%; height: 460px; object-fit: cover; }

/* =========================================================
   CTA BANNER
   ========================================================= */
.cta-banner{
  background: var(--c-black);
  background-image: radial-gradient(circle at 15% 30%, rgba(228,161,59,0.12), transparent 55%);
  text-align: center;
  padding: 90px 0;
}
.cta-banner h2{
  color: var(--c-white);
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  margin-bottom: 10px;
}
.cta-banner p{
  color: var(--c-accent);
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 36px;
}
.cta-banner-actions{
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}
.cta-banner-actions .btn-outline-cta i{ margin-right: 4px; }

/* =========================================================
   CONTACT
   ========================================================= */
.contact-section{ background: var(--c-charcoal); }
.contact-details{
  list-style: none;
  margin: 34px 0 0; padding: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact-details li{
  display: flex;
  align-items: center;
  gap: 16px;
}
.contact-details i{
  width: 46px; height: 46px;
  border: 1px solid var(--c-line);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--c-accent);
  flex-shrink: 0;
}
.contact-details span{
  display: block;
  font-size: 0.78rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: 2px;
}
.contact-details a{
  color: var(--c-white);
  font-family: var(--font-display);
  font-size: 1.02rem;
}
.contact-details a:hover{ color: var(--c-accent); }

.contact-form{
  background: var(--c-white);
  padding: 40px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}
.form-label{
  font-family: var(--font-display);
  font-size: 0.82rem;
  letter-spacing: 0.5px;
  color: var(--c-charcoal);
  margin-bottom: 6px;
}
.form-control, .form-select{
  border-radius: var(--radius-sm);
  border: 1px solid #D8D6D0;
  padding: 12px 14px;
  font-family: var(--font-body);
}
.form-control:focus, .form-select:focus{
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(228,161,59,0.18);
}
.btn-submit{ margin-top: 8px; }
.form-success{
  display: none;
  margin-top: 16px;
  color: #3E7A44;
  font-weight: 500;
  font-size: 0.92rem;
}
.form-success.visible{ display: block; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{
  background: var(--c-black);
  color: var(--c-muted);
  padding: 80px 0 26px;
}
.brand-footer{ margin-bottom: 18px; }
.footer-text{ color: var(--c-muted); font-size: 0.92rem; max-width: 320px; margin-top: 16px; }
.site-footer h4{
  font-family: var(--font-display);
  color: var(--c-white);
  font-size: 0.95rem;
  letter-spacing: 1px;
  margin-bottom: 20px;
}
.footer-list{ list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 12px; }
.footer-list a{ color: var(--c-muted); font-size: 0.92rem; transition: color .2s var(--ease); }
.footer-list a:hover{ color: var(--c-accent); }
.footer-list i{ margin-right: 8px; color: var(--c-accent); }

.footer-bottom{
  border-top: 1px solid var(--c-line);
  margin-top: 56px;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.84rem;
}
.footer-legal{ display: flex; gap: 10px; }
.footer-legal a{ color: var(--c-muted); }
.footer-legal a:hover{ color: var(--c-accent); }

/* Mobile call button */
.mobile-call-btn{
  position: fixed;
  bottom: 22px; right: 22px;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--c-accent);
  color: var(--c-black);
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 12px 28px -10px rgba(0,0,0,0.5);
  z-index: 999;
}

/* =========================================================
   SCROLL REVEAL
   ========================================================= */
.reveal{
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-visible{ opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce){
  .reveal{ opacity: 1; transform: none; transition: none; }
  *{ scroll-behavior: auto !important; }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 991.98px){
  section{ padding: 70px 0; }
  .process-track{ grid-template-columns: repeat(2, 1fr); }
  .nav-toggle{ display: flex; }
  .primary-nav{
    position: fixed;
    top: 0; right: 0;
    height: 100vh;
    width: min(320px, 82vw);
    background: var(--c-black);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 40px;
    gap: 40px;
    transform: translateX(100%);
    transition: transform .35s var(--ease);
    z-index: 999;
  }
  .primary-nav.open{ transform: translateX(0); }
  .nav-list{ flex-direction: column; gap: 26px; }
  .nav-link-custom{ font-size: 1.2rem; }
  .btn-quote{ width: 100%; text-align: center; }
  .mobile-call-btn{ display: flex; }
  .masonry-grid{ columns: 2 220px; }
}

@media (max-width: 767.98px){
  .hero-content{ padding-top: 100px; }
  .hero-stats{ gap: 18px; }
  .stat-divider{ display: none; }
  .trust-image img, .about-image img{ height: 300px; }
  .process-track{ grid-template-columns: 1fr; }
  .masonry-grid{ columns: 1; }
  .contact-form{ padding: 26px; }
  .cta-banner-actions{ flex-direction: column; align-items: stretch; }
  section{ padding: 56px 0; }
}