/* ==========================================================================
   TORSTEN TECHNOLOGIES — shared stylesheet
   Every page on the site links to this one file.
   Change a colour here and it changes everywhere.
   ========================================================================== */

/* --------------------------------------------------------------------------
   EDIT: BRAND COLOURS — change these six values to restyle the whole site
   -------------------------------------------------------------------------- */
:root{
  --iron:#131416;      /* page background — near black                */
  --slate:#1A1D20;     /* raised panels and alternating sections      */
  --plate:#22262A;     /* hover state on panels                       */
  --line:#2E3134;      /* hairline borders                            */
  --brand:#535456;     /* the charcoal from the Torsten logo          */
  --steel:#8E9296;     /* muted / secondary text                      */
  --mist:#C9CCCF;      /* body text                                   */
  --white:#EDEEEF;     /* headings                                    */
  --arc:#FFFFFF;       /* accent — "arc flash" white                  */

  --display:'Big Shoulders Display','Big Shoulders','Arial Narrow',Impact,sans-serif;
  --body:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;

  --wrap:1180px;
  --gutter:24px;
}

/* --------------------------------------------------------------------------
   BASE
   -------------------------------------------------------------------------- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--iron);
  color:var(--mist);
  font-family:var(--body);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}

/* Keyboard focus must always be visible */
a:focus-visible,button:focus-visible,input:focus-visible,
textarea:focus-visible,select:focus-visible,summary:focus-visible{
  outline:2px solid var(--arc);
  outline-offset:3px;
}

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

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--arc);color:var(--iron);
  padding:.8rem 1.2rem;font-weight:600;font-size:.85rem;
}
.skip-link:focus{left:0}

/* --------------------------------------------------------------------------
   HEADER + NAVIGATION
   -------------------------------------------------------------------------- */
header.site{
  position:sticky;top:0;z-index:100;
  background:rgba(19,20,22,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;height:74px}
.nav .brand img{height:44px;width:auto;max-width:62vw}
.nav-links{display:flex;gap:32px;list-style:none;align-items:center}
.nav-links a{
  font-size:.78rem;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--steel);
  padding:4px 0;position:relative;transition:color .2s;
}
.nav-links a:hover{color:var(--white)}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;
  background:var(--arc);transition:width .25s;
}
.nav-links a:hover::after,.nav-links a[aria-current="page"]::after{width:100%}
.nav-links a[aria-current="page"]{color:var(--white)}

.nav-actions{display:flex;align-items:center;gap:14px}

/* Hamburger — hidden on desktop */
.burger{
  display:none;background:none;border:1px solid var(--line);
  width:44px;height:44px;cursor:pointer;position:relative;
}
.burger span{
  display:block;width:20px;height:1.5px;background:var(--white);
  margin:4px auto;transition:transform .25s,opacity .2s;
}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

/* --------------------------------------------------------------------------
   BUTTONS — the plasma-cut angle is the signature shape of this site
   -------------------------------------------------------------------------- */
.btn{
  display:inline-block;
  font-family:var(--display);
  font-size:1.02rem;font-weight:700;letter-spacing:.09em;
  text-transform:uppercase;line-height:1;
  background:var(--arc);color:var(--iron);
  padding:.85rem 1.5rem;
  clip-path:polygon(11px 0,100% 0,calc(100% - 11px) 100%,0 100%);
  border:0;cursor:pointer;
  transition:background .2s,color .2s;
}
.btn:hover{background:var(--mist)}
.btn--ghost{
  background:transparent;color:var(--white);
  border:1px solid var(--brand);
  clip-path:none;
  font-size:.78rem;font-family:var(--body);font-weight:600;
  letter-spacing:.16em;padding:.9rem 1.5rem;
}
.btn--ghost:hover{background:transparent;border-color:var(--arc)}
.btn--sm{font-size:.86rem;padding:.62rem 1.15rem}

/* --------------------------------------------------------------------------
   HERO (homepage)
   -------------------------------------------------------------------------- */
.hero{
  position:relative;min-height:86vh;
  display:flex;align-items:flex-end;
  isolation:isolate;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-2;
  /* EDIT: swap images/hero-welder-onsite.jpg to change the hero photo */
  background:url('../images/hero-welder-onsite.jpg') center 32%/cover no-repeat;
  /* EDIT: brightness() controls how dark the photo sits. Lower = darker. */
  filter:grayscale(40%) contrast(1.02) brightness(.58);
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  /* Near-solid charcoal behind the headline, easing off toward the right */
  background:
    linear-gradient(90deg,rgba(19,20,22,.97) 0%,rgba(19,20,22,.93) 52%,rgba(19,20,22,.70) 100%),
    linear-gradient(180deg,rgba(19,20,22,.92) 0%,rgba(19,20,22,.60) 30%,rgba(19,20,22,.99) 94%);
}
.hero-inner{padding:150px 0 84px}
.kicker{
  display:inline-block;font-size:.74rem;font-weight:600;
  letter-spacing:.3em;text-transform:uppercase;color:var(--white);
  border-left:2px solid var(--arc);padding-left:14px;margin-bottom:20px;
}
h1{
  font-family:var(--display);font-weight:800;
  font-size:clamp(3rem,8.6vw,7rem);line-height:.92;
  text-transform:uppercase;letter-spacing:.005em;color:var(--white);
}
h1 .hollow{
  /* Outlined words: faint fill keeps them readable, the stroke keeps the effect */
  color:rgba(237,238,239,.18);
  -webkit-text-stroke:2px var(--white);
}
.hero h1,.hero p,.hero .kicker{text-shadow:0 2px 18px rgba(19,20,22,.75)}
.hero p{max-width:530px;color:var(--mist);margin:22px 0 34px;font-size:1.05rem}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}

/* --------------------------------------------------------------------------
   INNER PAGE HEADER
   -------------------------------------------------------------------------- */
.pagehead{
  position:relative;isolation:isolate;overflow:hidden;
  border-bottom:1px solid var(--line);
  padding:96px 0 74px;
}
.pagehead::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background:var(--head-photo,none) var(--slate) center/cover no-repeat;
  filter:grayscale(55%) contrast(1.02) brightness(.60);
}
.pagehead::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(90deg,rgba(19,20,22,.97) 0%,rgba(19,20,22,.90) 55%,rgba(19,20,22,.72) 100%);
}
.pagehead h1,.pagehead p,.pagehead .kicker{text-shadow:0 2px 16px rgba(19,20,22,.7)}
.pagehead h1{font-size:clamp(2.4rem,6vw,4.4rem)}
.pagehead p{max-width:600px;color:var(--mist);margin-top:16px}
/* EDIT: per-page background photos are set inline on each page */

/* --------------------------------------------------------------------------
   STAT BAR (numbers count up on scroll)
   -------------------------------------------------------------------------- */
.bar{background:var(--slate);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.bar .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.bar div{padding:28px 22px;border-left:1px solid var(--line)}
.bar div:first-child{border-left:0}
.bar b{
  font-family:var(--display);font-size:2.1rem;font-weight:700;
  letter-spacing:.03em;color:var(--white);display:block;line-height:1;
}
.bar small{
  color:var(--steel);font-size:.72rem;letter-spacing:.14em;
  text-transform:uppercase;display:block;margin-top:10px;
}

/* --------------------------------------------------------------------------
   SECTIONS + HEADINGS
   -------------------------------------------------------------------------- */
section{padding:92px 0}
section.tight{padding:64px 0}
.band{background:var(--slate);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
h2{
  font-family:var(--display);font-weight:700;
  font-size:clamp(2.1rem,4.8vw,3.5rem);
  text-transform:uppercase;letter-spacing:.02em;
  color:var(--white);margin-bottom:12px;line-height:1;
}
h3{font-family:var(--display);font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--white)}
.tag{
  font-size:.72rem;font-weight:600;letter-spacing:.28em;
  text-transform:uppercase;color:var(--steel);
  display:block;margin-bottom:14px;
}
.lead{color:var(--steel);max-width:600px;margin-bottom:52px}
.lead:last-child{margin-bottom:0}

/* --------------------------------------------------------------------------
   SERVICES GRID
   -------------------------------------------------------------------------- */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.cell{background:var(--iron);padding:34px 28px;position:relative;transition:background .25s}
.cell:hover{background:var(--plate)}
.cell::after{content:"";position:absolute;left:0;top:0;height:2px;width:0;background:var(--arc);transition:width .3s}
.cell:hover::after{width:100%}
.cell h3{font-size:1.4rem;margin-bottom:10px}
.cell p{color:var(--steel);font-size:.92rem;margin-bottom:18px}
.cell .more{font-size:.74rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--white)}

/* --------------------------------------------------------------------------
   WORK MOSAIC
   -------------------------------------------------------------------------- */
.shots{display:grid;grid-template-columns:1.4fr 1fr 1fr;grid-auto-rows:250px;gap:12px}
.shot{position:relative;overflow:hidden;background:var(--slate)}
.shot img{width:100%;height:100%;object-fit:cover;transition:transform .5s,filter .5s;filter:grayscale(45%)}
.shot:hover img{transform:scale(1.04);filter:grayscale(0%)}
.shot--tall{grid-row:span 2}
.shot figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 16px;
  font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;
  background:linear-gradient(0deg,rgba(19,20,22,.92),transparent);color:var(--mist);
}

/* Plain gallery (work page) */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.gallery figure{position:relative;overflow:hidden;background:var(--slate)}
.gallery img{width:100%;height:280px;object-fit:cover;filter:grayscale(45%);transition:filter .4s,transform .5s}
.gallery figure:hover img{filter:grayscale(0%);transform:scale(1.03)}
.gallery figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:12px 14px;
  font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;
  background:linear-gradient(0deg,rgba(19,20,22,.92),transparent);color:var(--mist);
}

/* --------------------------------------------------------------------------
   TWO-COLUMN + POINT LIST
   -------------------------------------------------------------------------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.split img{border:1px solid var(--line)}
.point{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
.point:last-child{border-bottom:0}
.point b{font-family:var(--display);font-size:1.2rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--white);display:block;margin-bottom:4px}
.point p{color:var(--steel);font-size:.92rem}
.pnum{
  font-family:var(--display);font-size:1.05rem;color:var(--white);
  border:1px solid var(--brand);min-width:44px;height:44px;
  display:grid;place-items:center;flex-shrink:0;
}

/* --------------------------------------------------------------------------
   PROCESS STRIP (work page — order genuinely matters here)
   -------------------------------------------------------------------------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.step figure{position:relative;overflow:hidden;background:var(--slate);border:1px solid var(--line)}
.step img{width:100%;height:230px;object-fit:cover;filter:grayscale(40%)}
.step .stage{
  font-family:var(--display);font-size:.85rem;letter-spacing:.2em;
  color:var(--white);border-bottom:1px solid var(--line);
  padding:10px 14px;text-transform:uppercase;
}
.step b{display:block;padding:14px 14px 4px;color:var(--white);font-size:.95rem}
.step p{padding:0 14px 18px;color:var(--steel);font-size:.86rem}
.step > div{border:1px solid var(--line);border-top:0}

/* --------------------------------------------------------------------------
   SERVICE DETAIL BLOCKS (services page)
   -------------------------------------------------------------------------- */
.svc{border-top:1px solid var(--line);padding:56px 0;display:grid;grid-template-columns:88px 1fr 300px;gap:36px;align-items:start}
.svc:first-of-type{border-top:0}
.svc .code{font-family:var(--display);font-size:1.5rem;letter-spacing:.14em;color:var(--brand);padding-top:4px}
.svc h3{font-size:1.75rem;margin-bottom:12px}
.svc p{color:var(--steel);margin-bottom:14px}
.svc ul{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.svc li{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--mist);border:1px solid var(--line);padding:6px 11px}
.svc img{height:220px;width:100%;object-fit:cover;filter:grayscale(45%);border:1px solid var(--line)}

/* --------------------------------------------------------------------------
   FAQ ACCORDION
   -------------------------------------------------------------------------- */
.faq{border-top:1px solid var(--line);max-width:900px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;padding:24px 44px 24px 0;position:relative;
  font-family:var(--display);font-size:1.22rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.04em;color:var(--white);
  transition:color .2s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--arc)}
.faq summary::after{
  content:"";position:absolute;right:6px;top:50%;
  width:12px;height:12px;
  border-right:1.5px solid var(--steel);border-bottom:1.5px solid var(--steel);
  transform:translateY(-70%) rotate(45deg);transition:transform .25s;
}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq .answer{padding:0 40px 26px 0;color:var(--steel)}
.faq .answer strong{color:var(--mist);font-weight:600}

/* --------------------------------------------------------------------------
   FORMS
   -------------------------------------------------------------------------- */
.formwrap{background:var(--slate);border:1px solid var(--line);padding:40px}
form.tt{display:grid;grid-template-columns:1fr 1fr;gap:20px}
label{
  font-size:.7rem;font-weight:600;letter-spacing:.18em;
  text-transform:uppercase;color:var(--steel);display:block;margin-bottom:8px;
}
input,textarea,select{
  width:100%;background:var(--iron);border:1px solid var(--line);
  color:var(--white);padding:.85rem 1rem;
  font-family:var(--body);font-size:.95rem;
}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--arc)}
textarea{resize:vertical;min-height:120px}
.full{grid-column:1/-1}
form.tt button{grid-column:1/-1;justify-self:start}
/* honeypot — hidden from people, visible to bots */
.hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}
.formnote{grid-column:1/-1;font-size:.8rem;color:var(--steel)}
.formstatus{
  grid-column:1/-1;padding:14px 16px;border-left:2px solid var(--arc);
  background:var(--iron);color:var(--mist);font-size:.9rem;display:none;
}
.formstatus.show{display:block}
.formstatus.err{border-left-color:var(--brand)}

/* Contact detail list */
.details dt{font-size:.7rem;letter-spacing:.22em;text-transform:uppercase;color:var(--steel);margin:26px 0 6px}
.details dt:first-child{margin-top:0}
.details dd{font-family:var(--display);font-size:1.35rem;letter-spacing:.06em;color:var(--white)}
.details dd a:hover{color:var(--arc);text-decoration:underline}

/* --------------------------------------------------------------------------
   CTA BAND
   -------------------------------------------------------------------------- */
.cta-band{
  background:linear-gradient(rgba(19,20,22,.90),rgba(19,20,22,.94)),url('../images/sparks-welding.jpg') center/cover;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  text-align:center;
}
.cta-band .lead{margin:0 auto 34px}
.cta-band .hero-actions{justify-content:center}

/* --------------------------------------------------------------------------
   FOOTER
   -------------------------------------------------------------------------- */
footer.site{border-top:1px solid var(--line);padding:56px 0 34px;background:var(--iron)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:44px;padding-bottom:34px}
.foot-grid img{height:30px;margin-bottom:18px}
.foot-grid img.foot-logo{height:auto;width:100%;max-width:330px;margin-bottom:20px}
.foot-grid p{color:var(--steel);font-size:.9rem;max-width:320px}
.foot-grid h4{
  font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--white);margin-bottom:16px;font-weight:600;
}
.foot-grid ul{list-style:none;display:grid;gap:9px}
.foot-grid ul a{color:var(--steel);font-size:.9rem;transition:color .2s}
.foot-grid ul a:hover{color:var(--white)}
.foot-base{
  border-top:1px solid var(--line);padding-top:24px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:var(--steel);font-size:.78rem;letter-spacing:.04em;
}

/* --------------------------------------------------------------------------
   404
   -------------------------------------------------------------------------- */
.notfound{min-height:70vh;display:grid;place-items:center;text-align:center;padding:80px 0}
.notfound .code{font-family:var(--display);font-size:clamp(5rem,18vw,12rem);line-height:.85;color:transparent;-webkit-text-stroke:2px var(--brand)}

/* --------------------------------------------------------------------------
   SCROLL REVEAL
   -------------------------------------------------------------------------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* --------------------------------------------------------------------------
   RESPONSIVE
   -------------------------------------------------------------------------- */
@media(max-width:980px){
  .nav-links{
    position:fixed;inset:74px 0 auto 0;
    flex-direction:column;gap:0;align-items:stretch;
    background:var(--iron);border-bottom:1px solid var(--line);
    padding:8px 0 20px;
    transform:translateY(-120%);transition:transform .3s ease;
    max-height:calc(100vh - 74px);overflow-y:auto;
  }
  .nav-links.open{transform:translateY(0)}
  .nav-links a{padding:16px var(--gutter);font-size:.9rem;display:block;border-bottom:1px solid var(--line)}
  .nav-links a::after{display:none}
  .burger{display:block}
  .nav .btn{display:none}

  .hero{min-height:78vh}
  .hero-inner{padding:110px 0 64px}
  .bar .wrap{grid-template-columns:1fr 1fr}
  .bar div:nth-child(3){border-left:0}
  .bar div:nth-child(n+3){border-top:1px solid var(--line)}
  .grid{grid-template-columns:1fr}
  .shots{grid-template-columns:1fr 1fr;grid-auto-rows:200px}
  .shot--tall{grid-row:span 1}
  .gallery{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:40px}
  .steps{grid-template-columns:1fr 1fr}
  .svc{grid-template-columns:1fr;gap:20px}
  .svc .code{padding-top:0}
  .svc img{height:200px}
  form.tt{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  section{padding:68px 0}
  .formwrap{padding:26px 20px}
}
@media(max-width:560px){
  .shots,.gallery{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .bar .wrap{grid-template-columns:1fr}
  .bar div{border-left:0;border-top:1px solid var(--line)}
  .bar div:first-child{border-top:0}
  .hero-actions .btn,.hero-actions .btn--ghost{width:100%;text-align:center}
}

/* Respect the visitor's motion preference */
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}