/* =========================================================
   JAS TAK & FASAD — DEMO
   Design system: "Falsad plåt" — grafitmörk, zinkljus, byggorange
   ========================================================= */

:root{
  --graphite-950: #14181B;
  --graphite-900: #1B2126;
  --graphite-800: #232A30;
  --steel-700:   #3D4A52;
  --steel-500:   #6B7B84;
  --zinc:        #F2F1ED;
  --zinc-dim:    #E7E5DE;
  --panel:       #262E34;
  --accent:      #E0621F;
  --accent-dim:  #B84E17;
  --ink:         #1B2126;
  --ink-soft:    #545E63;
  --paper:       #F2F1ED;
  --line:        rgba(27,33,38,0.12);
  --line-on-dark:rgba(242,241,237,0.14);

  --font-display: "Space Grotesk", "Arial Narrow", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;

  --wrap: 1180px;
  --radius: 3px;
  --ease: cubic-bezier(.22,.68,.35,1);
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *,*::before,*::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

body{
  margin:0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img{ max-width:100%; display:block; }
a{ color: inherit; }
h1,h2,h3{ font-family: var(--font-display); font-weight: 600; line-height: 1.1; margin: 0; color: var(--graphite-900); letter-spacing: -0.01em; }
em{ font-style: normal; color: var(--accent); }
p{ margin: 0; }

.wrap{
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 32px;
}

.eyebrow{
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-dim);
  margin: 0 0 14px;
}
.eyebrow--light{ color: var(--accent); }

.section-lead{
  max-width: 620px;
  color: var(--ink-soft);
  font-size: 17px;
  margin-top: 16px;
}

/* ---------- buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .25s var(--ease), background-color .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.btn--primary{
  background: var(--accent);
  color: var(--zinc);
}
.btn--primary:hover{ background: var(--accent-dim); transform: translateY(-1px); }
.btn--ghost{
  background: transparent;
  border-color: var(--graphite-900);
  color: var(--graphite-900);
}
.btn--ghost:hover{ background: var(--graphite-900); color: var(--zinc); }
.btn--block{ width: 100%; }
.btn:focus-visible{ outline: 2px solid var(--accent); outline-offset: 3px; }

/* =========================================================
   DEMO BANNER
   ========================================================= */
.demo-banner{
  background: var(--accent);
  color: var(--graphite-950);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  position: relative;
  z-index: 200;
}
.demo-banner p{
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 10px 56px 10px 20px;
  position: relative;
}
.demo-banner strong{ letter-spacing: .06em; }
.demo-banner__close{
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: 20px;
  line-height: 1;
  color: var(--graphite-950);
  cursor: pointer;
  padding: 4px 8px;
}
.demo-banner.is-hidden{ display: none; }

/* =========================================================
   HEADER / NAV
   ========================================================= */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(242,241,237,0.88);
  backdrop-filter: blur(10px) saturate(140%);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s var(--ease);
}
.site-header.is-scrolled{ box-shadow: 0 6px 24px rgba(20,24,27,0.1); }

.site-header__inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.brand{ display:flex; align-items:center; gap:12px; text-decoration:none; }
.brand__mark{
  width: 40px; height: 40px;
  display:flex; align-items:center; justify-content:center;
  background: var(--graphite-900);
  color: var(--accent);
  border-radius: var(--radius);
}
.brand__mark svg{ width: 22px; height: 22px; }
.brand__text{ display:flex; flex-direction:column; line-height:1.15; }
.brand__name{ font-family: var(--font-display); font-size: 17px; font-weight: 600; color: var(--graphite-900); }
.brand__tag{ font-family: var(--font-mono); font-size: 10.5px; letter-spacing:.05em; color: var(--ink-soft); text-transform: uppercase; }

.main-nav{ display:flex; align-items:center; gap: 30px; }
.main-nav a{
  text-decoration:none;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-soft);
  position: relative;
  padding: 4px 0;
}
.main-nav a:not(.main-nav__cta)::after{
  content:"";
  position:absolute; left:0; right:100%; bottom:-2px;
  height:2px; background: var(--accent);
  transition: right .25s var(--ease);
}
.main-nav a:not(.main-nav__cta):hover::after{ right:0; }
.main-nav a:not(.main-nav__cta):hover{ color: var(--graphite-900); }
.main-nav__cta{
  background: var(--accent);
  color: var(--zinc) !important;
  padding: 9px 18px;
  border-radius: var(--radius);
  font-weight: 600;
  transition: background-color .25s var(--ease);
}
.main-nav__cta:hover{ background: var(--accent-dim); }

.nav-toggle{
  display:none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: none; border: none; cursor: pointer;
}
.nav-toggle span{ display:block; height:2px; background: var(--graphite-900); border-radius:2px; transition: transform .25s var(--ease), opacity .25s var(--ease); }

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position: relative;
  padding: 88px 0 0;
  overflow: hidden;
}
.hero__inner{
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
  position: relative;
}
.hero__copy{ position: relative; z-index: 2; }
.hero h1{
  font-size: clamp(2.3rem, 4.4vw, 3.4rem);
  margin-top: 6px;
}
.hero__lead{
  margin-top: 22px;
  max-width: 500px;
  font-size: 17.5px;
  color: var(--ink-soft);
}
.hero__actions{
  margin-top: 32px;
  display:flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero__badges{
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}
.hero__badges li{
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero__badges li::before{
  content:"";
  width: 6px; height: 6px;
  background: var(--accent);
  display: inline-block;
  border-radius: 1px;
  transform: rotate(45deg);
}

.hero__visual{
  position: relative;
  z-index: 2;
}
.roofline{
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 30px 60px -20px rgba(20,24,27,0.4);
}
#roofPanels path{
  stroke-dasharray: 400;
  stroke-dashoffset: 400;
  animation: drawSeam 1.6s var(--ease) forwards;
}
#roofPanels path:nth-child(1){ animation-delay: .15s; }
#roofPanels path:nth-child(2){ animation-delay: .35s; }
#roofPanels path:nth-child(3){ animation-delay: .55s; }
#roofPanels path:nth-child(4){ animation-delay: .7s; }
@keyframes drawSeam{ to{ stroke-dashoffset: 0; } }
#seamLines{
  opacity: 0;
  animation: fadeSeam 1s ease forwards;
  animation-delay: 1.1s;
}
@keyframes fadeSeam{ to{ opacity: 0.5; } }

.visual-caption{
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--ink-soft);
  text-align: center;
}

.hero__seam{
  height: 3px;
  margin-top: 88px;
  background: repeating-linear-gradient(90deg, var(--graphite-900) 0 40px, var(--accent) 40px 44px, var(--graphite-900) 44px 84px);
}

/* =========================================================
   SERVICES
   ========================================================= */
.services{ padding: 96px 0; }
.services h2{ font-size: clamp(1.7rem, 3vw, 2.3rem); max-width: 680px; }

.service-grid{
  margin-top: 52px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.service-card{
  background: var(--paper);
  padding: 34px 30px;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .6s var(--ease), transform .6s var(--ease), background-color .3s var(--ease);
}
.service-card.is-visible{ opacity: 1; transform: translateY(0); }
.service-card:hover{ background: var(--zinc-dim); }
.service-card__icon{
  display:flex; align-items:center; justify-content:center;
  width: 42px; height: 42px;
  color: var(--accent);
}
.service-card__icon svg{ width: 26px; height: 26px; }
.service-card h3{
  font-size: 19px;
  margin-top: 18px;
  margin-bottom: 10px;
}
.service-card p{
  color: var(--ink-soft);
  font-size: 14.8px;
}

/* =========================================================
   ABOUT
   ========================================================= */
.about{
  background: var(--graphite-900);
  color: var(--zinc);
  padding: 100px 0;
  position: relative;
  clip-path: polygon(0 32px, 100% 0, 100% calc(100% - 32px), 0 100%);
}
.about__inner{
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: center;
  padding: 40px 0;
}
.about__copy h2{ color: var(--zinc); font-size: clamp(1.7rem,3vw,2.2rem); margin-top: 6px; }
.about__copy p{ color: rgba(242,241,237,0.76); margin-top: 18px; max-width: 560px; }

.about__stats{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.stat-card{
  background: var(--panel);
  border: 1px solid var(--line-on-dark);
  border-radius: 6px;
  padding: 26px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.stat-card--accent{
  grid-column: 1 / -1;
  background: var(--accent);
  border-color: var(--accent);
}
.stat-card__num{
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  color: var(--zinc);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.stat-card--accent .stat-card__num{ color: var(--graphite-950); }
.stat-card__pct{ font-size: 22px; }
.stat-card__label{
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: rgba(242,241,237,0.65);
  line-height: 1.4;
}
.stat-card--accent .stat-card__label{ color: rgba(20,24,27,0.72); }

/* =========================================================
   PROJECTS
   ========================================================= */
.projects{ padding: 100px 0; }
.projects h2{ font-size: clamp(1.7rem,3vw,2.3rem); max-width: 680px; }

.project-grid{
  margin-top: 52px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.project-card{
  margin: 0;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--zinc);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.project-card:hover{
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -16px rgba(20,24,27,0.25);
}
.project-card__media{
  aspect-ratio: 4/3;
  background: var(--graphite-800);
  position: relative;
  overflow: hidden;
}
.project-card__media::before{
  content:"";
  position: absolute; inset: 0;
}
.project-card__media[data-pattern="seam"]::before{
  background: repeating-linear-gradient(115deg, var(--steel-700) 0 18px, var(--graphite-800) 18px 40px);
}
.project-card__media[data-pattern="panel"]::before{
  background: repeating-linear-gradient(90deg, var(--steel-700) 0 2px, var(--graphite-800) 2px 46px);
}
.project-card__media[data-pattern="scaffold"]::before{
  background:
    repeating-linear-gradient(0deg, var(--steel-700) 0 2px, transparent 2px 38px),
    repeating-linear-gradient(90deg, var(--steel-700) 0 2px, transparent 2px 38px);
  background-color: var(--graphite-800);
}
.project-card figcaption{ padding: 18px 20px 22px; }
.project-card__tag{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent-dim);
}
.project-card h3{
  font-size: 16.5px;
  margin-top: 8px;
  font-weight: 600;
}

/* =========================================================
   CONTACT
   ========================================================= */
.contact{
  background: var(--graphite-950);
  color: var(--zinc);
  padding: 100px 0;
}
.contact__inner{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}
.contact__copy h2{ color: var(--zinc); font-size: clamp(1.7rem,3vw,2.2rem); margin-top: 6px; }
.contact__copy p{ color: rgba(242,241,237,0.7); margin-top: 16px; max-width: 440px; }

.contact__details{
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.contact__details > div{
  display:flex; flex-direction:column; gap:4px;
  border-top: 1px solid var(--line-on-dark);
  padding-top: 14px;
}
.contact__label{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing:.06em;
  text-transform: uppercase;
  color: var(--accent);
}
.contact__value{ font-size: 16px; }
.contact__value em{ color: rgba(242,241,237,0.4); font-style: normal; font-size: 12.5px; }

.contact__form{
  background: var(--panel);
  border: 1px solid var(--line-on-dark);
  border-radius: 8px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.field{ display:flex; flex-direction:column; gap: 8px; }
.field label{
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing:.05em;
  text-transform: uppercase;
  color: var(--steel-500);
}
.field input, .field textarea, .field select{
  background: var(--graphite-950);
  border: 1px solid var(--line-on-dark);
  border-radius: var(--radius);
  padding: 12px 14px;
  color: var(--zinc);
  font-family: var(--font-body);
  font-size: 14.5px;
  resize: vertical;
  transition: border-color .25s var(--ease);
}
.field select{ appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23E0621F' stroke-width='1.6' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }
.field input:focus, .field textarea:focus, .field select:focus{
  outline: none;
  border-color: var(--accent);
}
.field__note{
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent);
  min-height: 16px;
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{
  background: var(--graphite-950);
  border-top: 1px solid var(--line-on-dark);
  padding: 36px 0;
}
.site-footer__inner{
  display:flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
}
.site-footer__brand{
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--zinc);
  font-size: 16px;
}
.site-footer__fine{
  margin-top: 8px;
  max-width: 640px;
  color: rgba(242,241,237,0.42);
  font-size: 12px;
  line-height: 1.6;
}
.back-to-top{
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--steel-500);
  text-decoration: none;
  white-space: nowrap;
  transition: color .25s var(--ease);
}
.back-to-top:hover{ color: var(--accent); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 980px){
  .hero__inner{ grid-template-columns: 1fr; }
  .hero__visual{ margin-top: 40px; max-width: 460px; }
  .about__inner{ grid-template-columns: 1fr; }
  .about{ clip-path: none; }
  .service-grid{ grid-template-columns: repeat(2,1fr); }
  .project-grid{ grid-template-columns: repeat(2,1fr); }
  .contact__inner{ grid-template-columns: 1fr; }
}

@media (max-width: 680px){
  .wrap{ padding: 0 20px; }
  .main-nav{
    position: fixed;
    top: 0; right: 0;
    height: 100vh;
    width: min(78vw, 320px);
    background: var(--graphite-950);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 28px;
    padding: 40px;
    transform: translateX(100%);
    transition: transform .35s var(--ease);
    z-index: 150;
  }
  .main-nav.is-open{ transform: translateX(0); }
  .main-nav a{ color: var(--zinc); font-size: 18px; }
  .main-nav__cta{ margin-top: 10px; }
  .nav-toggle{ display:flex; }
  .nav-toggle.is-open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2){ opacity:0; }
  .nav-toggle.is-open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

  .service-grid{ grid-template-columns: 1fr; }
  .project-grid{ grid-template-columns: 1fr; }
  .about__stats{ grid-template-columns: 1fr 1fr; }
  .site-footer__inner{ flex-direction: column; align-items: flex-start; gap: 18px; }
  .demo-banner p{ padding-right: 44px; }
}