/* =====================================================================
   Mudsa Industries — stylesheet
   Palette: charcoal steel + brass on light steel. Industrial/technical.
   Type: Sora (display) / Inter (body) / JetBrains Mono (technical labels)
   ===================================================================== */
:root{
  --ink:#15181b;--steel-900:#1b1f22;--steel-800:#262b2f;--steel-700:#3a4147;
  --steel-500:#5c666d;--steel-400:#7c868d;
  --brass:#bf7f2a;--brass-hi:#e3a34c;--brass-soft:#f4e6cd;
  --bg:#f1f3f4;--white:#ffffff;--line:#dde2e4;
  --shadow-sm:0 4px 14px -6px rgba(20,24,27,.20);
  --shadow-md:0 22px 46px -22px rgba(20,24,27,.38);
  --radius:4px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;color:var(--ink);background:var(--white);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;overflow-wrap:break-word}
h1,h2,h3,h4,.disp{font-family:'Sora','Inter',sans-serif;line-height:1.12;font-weight:700;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
svg{display:block}
.wrap{width:min(1200px,92vw);margin-inline:auto}
.mono{font-family:'JetBrains Mono',monospace}
.eyebrow{font-family:'JetBrains Mono',monospace;text-transform:uppercase;letter-spacing:.18em;font-weight:600;font-size:.72rem;color:var(--brass);display:inline-flex;align-items:center;gap:.6rem}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brass)}

/* ---------- buttons ---------- */
.btn{font-family:'JetBrains Mono',monospace;font-weight:600;font-size:.85rem;letter-spacing:.04em;text-transform:uppercase;padding:.85rem 1.6rem;border-radius:var(--radius);cursor:pointer;border:1.5px solid transparent;transition:.25s;display:inline-flex;align-items:center;gap:.55rem}
.btn svg{width:16px;height:16px}
.btn-gold{background:var(--brass);color:#20140a;box-shadow:0 12px 26px -12px rgba(191,127,42,.7)}
.btn-gold:hover{background:var(--brass-hi);transform:translateY(-2px)}
.btn-ghost{border-color:rgba(255,255,255,.3);color:#fff}
.btn-ghost:hover{border-color:var(--brass-hi);color:var(--brass-hi)}
.btn-line{border-color:var(--line);color:var(--ink);background:#fff}
.btn-line:hover{border-color:var(--brass);color:var(--brass)}

/* ---------- top bar ---------- */
.topbar{background:var(--steel-900);color:#a7b0b6;font-size:.78rem;font-family:'JetBrains Mono',monospace;border-bottom:1px solid var(--line-dark,rgba(255,255,255,.08))}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:1rem;height:40px}
.topbar a{display:inline-flex;align-items:center;gap:.4rem;color:#a7b0b6;transition:color .2s}
.topbar a:hover{color:var(--brass-hi)}
.topbar svg{width:14px;height:14px;color:var(--brass)}
.tb-left{display:flex;gap:1.6rem}
.tb-right{display:flex;gap:1.4rem;align-items:center}
.tb-badge{display:inline-flex;align-items:center;gap:.4rem;color:var(--brass-hi);font-weight:600}
@media(max-width:820px){.tb-left{display:none}.topbar .wrap{justify-content:center}}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:60;transition:box-shadow .3s}
header::before{content:"";position:absolute;inset:0;z-index:-1;background:rgba(27,31,34,.92);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08);transition:border-color .3s}
header.scrolled{box-shadow:0 8px 26px -18px rgba(0,0,0,.5)}
header.scrolled::before{border-bottom-color:var(--brass)}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;gap:.75rem}
.brand .mark{width:44px;height:44px;flex:none;border-radius:2px;background:linear-gradient(150deg,var(--steel-700),var(--steel-900));border:1px solid rgba(255,255,255,.12);display:grid;place-items:center;position:relative;box-shadow:var(--shadow-sm)}
.brand .mark::after{content:"M";font-family:'Sora';font-weight:800;font-size:1.4rem;color:var(--brass-hi)}
.brand b{font-family:'Sora';font-weight:800;font-size:1.24rem;letter-spacing:-.02em;display:block;line-height:1.05;color:#fff}
.brand small{font-family:'Inter',sans-serif;font-size:.62rem;letter-spacing:.2em;color:var(--brass-hi);text-transform:uppercase;font-weight:600}
nav ul{list-style:none;display:flex;align-items:center;gap:2rem}
nav a{font-family:'Inter',sans-serif;font-weight:600;font-size:.82rem;letter-spacing:.03em;text-transform:uppercase;color:#c2cacf;position:relative;padding:.3rem 0;transition:color .2s}
nav a::after{content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--brass);transition:width .25s}
nav a:not(.nav-cta):hover,nav a.active{color:var(--brass-hi)}
.has-sub{position:relative}
.has-sub>a::after{display:none}
.has-sub>a .caret{margin-left:.3rem;transition:transform .2s;display:inline-block}
.has-sub:hover>a .caret{transform:rotate(180deg)}
.sub{display:block;position:absolute;top:calc(100% + 16px);left:50%;transform:translateX(-50%) translateY(8px);background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:.5rem;min-width:170px;opacity:0;visibility:hidden;transition:.22s;box-shadow:var(--shadow-md)}
.has-sub:hover .sub{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.sub a{display:block;padding:.6rem .85rem;border-radius:2px;font-family:'Inter',sans-serif;font-size:.8rem;text-transform:uppercase;letter-spacing:.03em;color:var(--ink)}
.sub a:hover{background:var(--brass-soft);color:var(--brass)}
.nav-cta{display:inline-flex;color:#fff;font-family:'Inter',sans-serif}
.nav-cta:hover{background:#fff;border-color:var(--brass);color:var(--brass)}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.burger span{width:26px;height:2px;background:#fff;border-radius:1px;transition:.3s}
@media(max-width:960px){
  .burger{display:flex}
  nav{position:fixed;inset:0 0 0 auto;z-index:75;width:min(330px,84vw);background:var(--steel-900);transform:translateX(100%);transition:transform .35s cubic-bezier(.4,0,.2,1);padding:6rem 1.7rem 2rem;box-shadow:var(--shadow-md)}
  body.menu-open nav{transform:translateX(0)}
  nav ul{flex-direction:column;align-items:flex-start;gap:.3rem;width:100%}
  nav a{color:#e4e7e9;font-size:.92rem;width:100%;padding:.65rem 0}
  .has-sub{width:100%}
  #nav .sub{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;background:transparent;border:0;padding:0 0 0 1.1rem;min-width:0;max-height:0;overflow:hidden;transition:max-height .3s ease}
  #nav .has-sub.open .sub{max-height:200px;padding:.2rem 0 .4rem 1.1rem}
  .has-sub.open>a .caret{transform:rotate(180deg)}
  .sub a{color:#9aa5ac;padding:.45rem 0}
  .sub a:hover{background:transparent;color:var(--brass-hi)}
  .nav-cta{display:flex;width:100%;justify-content:center;margin-top:1.2rem}
  body.menu-open{overflow:hidden}
  .burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .burger.open span:nth-child(2){opacity:0}
  .burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}

/* ---------- hero ---------- */
.hero{position:relative;background:linear-gradient(160deg,var(--steel-900) 0%,#0d1012 100%);color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:46px 46px;-webkit-mask-image:radial-gradient(900px 560px at 50% 15%,#000,transparent 75%);mask-image:radial-gradient(900px 560px at 50% 15%,#000,transparent 75%)}
.hero .wrap{position:relative;padding:clamp(4.5rem,9vw,7.5rem) 0}
.hero-text{max-width:760px;margin-inline:auto;text-align:center}
.hero .eyebrow{justify-content:center}
.hero h1{font-size:clamp(2.3rem,5.2vw,4rem);font-weight:800;margin:1.3rem 0 1.2rem;letter-spacing:-.025em}
.hero h1 em{font-style:normal;color:var(--brass-hi)}
.hero p{color:#a7b0b6;font-size:1.1rem;max-width:52ch;margin-inline:auto}
.hero-cta{display:flex;gap:.9rem;margin:2rem 0 2.2rem;flex-wrap:wrap;justify-content:center}
.hero-trust{display:flex;gap:1.8rem;flex-wrap:wrap;justify-content:center;padding-top:1.6rem;border-top:1px solid rgba(255,255,255,.12)}
.hero-trust div{display:flex;align-items:center;gap:.6rem;font-family:'JetBrains Mono',monospace;font-size:.78rem;letter-spacing:.02em;color:#c2cacf}
.hero-trust svg{width:18px;height:18px;color:var(--brass-hi);flex:none}

/* ---------- category ticker ---------- */
.strip{background:var(--steel-800);color:#fff;overflow:hidden;border-top:1px solid rgba(255,255,255,.08)}
.strip .track{display:flex;gap:3rem;padding:.9rem 0;white-space:nowrap;animation:scroll 28s linear infinite;font-family:'JetBrains Mono',monospace;font-weight:600;letter-spacing:.08em;text-transform:uppercase;font-size:.78rem;color:#9aa5ac;width:max-content}
.strip .track span{display:inline-flex;align-items:center;gap:.7rem}
.strip .track span::before{content:"\25C6";color:var(--brass)}
@keyframes scroll{to{transform:translateX(-50%)}}
@media(prefers-reduced-motion:reduce){.strip .track{animation:none}}

/* ---------- section shell ---------- */
section{padding:clamp(3.5rem,7vw,6rem) 0}
.sec-head{max-width:660px;margin-bottom:3.2rem}
.sec-head.center{margin-inline:auto;text-align:center}
.sec-head.center .eyebrow{justify-content:center}
.sec-head h2{font-size:clamp(1.9rem,4vw,2.9rem);font-weight:800;margin:.95rem 0 .8rem;color:var(--ink)}
.sec-head p{color:var(--steel-500);font-size:1.05rem}

/* ---------- why choose us ---------- */
#why{background:var(--white)}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem}
.why-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:2rem 1.6rem;transition:transform .3s,box-shadow .3s,border-color .3s}
.why-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:transparent}
.why-card::after{content:"";position:absolute;top:-1px;right:-1px;width:14px;height:14px;border:2px solid var(--brass);border-left:0;border-bottom:0;opacity:0;transition:opacity .3s}
.why-card:hover::after{opacity:1}
.why-ic{width:52px;height:52px;border-radius:2px;background:var(--brass-soft);display:grid;place-items:center;margin-bottom:1.2rem}
.why-ic svg{width:24px;height:24px;color:var(--brass)}
.why-card h3{font-size:1.14rem;color:var(--ink);margin-bottom:.5rem}
.why-card p{color:var(--steel-500);font-size:.94rem}
@media(max-width:960px){.why-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.why-grid{grid-template-columns:1fr}}

/* ---------- about ---------- */
#about .sec-head p{margin-top:.2rem}
.timeline-strip{list-style:none;display:flex;gap:2.5rem;margin-top:3.4rem;position:relative;padding-top:2rem}
.timeline-strip::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--line)}
.timeline-strip li{flex:1;position:relative}
.timeline-strip li::before{content:"";position:absolute;top:-2.45rem;left:0;width:11px;height:11px;border-radius:50%;background:var(--brass);box-shadow:0 0 0 4px var(--brass-soft)}
.timeline-strip .yr{display:block;font-family:'JetBrains Mono',monospace;font-weight:700;color:var(--ink);font-size:1.3rem;margin-bottom:.5rem}
.timeline-strip p{margin:0;color:var(--steel-500);font-size:.94rem}
@media(max-width:760px){
  .timeline-strip{flex-direction:column;gap:1.8rem;padding-top:0}
  .timeline-strip::before{top:0;bottom:0;left:5px;right:auto;width:1px;height:auto}
  .timeline-strip li{padding-left:1.8rem}
  .timeline-strip li::before{top:.3rem;left:0}
}

/* ---------- stats ---------- */
#stats{background:linear-gradient(160deg,var(--steel-900),#0d1012);color:#fff;position:relative;overflow:hidden;border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.08)}
#stats::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:44px 44px;-webkit-mask-image:radial-gradient(700px 420px at 50% 50%,#000,transparent 75%);mask-image:radial-gradient(700px 420px at 50% 50%,#000,transparent 75%)}
.stat-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;text-align:center}
.stat-item{padding:1rem;border-left:1px solid rgba(255,255,255,.1)}
.stat-item:first-child{border-left:0}
.stat-item b{font-family:'JetBrains Mono',monospace;font-weight:700;font-size:clamp(2.2rem,4.5vw,3.2rem);color:var(--brass-hi);display:block;line-height:1}
.stat-item span{font-family:'JetBrains Mono',monospace;font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:#9aa5ac;margin-top:.5rem;display:block}
@media(max-width:720px){.stat-grid{grid-template-columns:repeat(2,1fr);gap:2.2rem 1rem}.stat-item{border-left:0;border-top:1px solid rgba(255,255,255,.1)}.stat-item:first-child{border-top:0}}

/* ---------- products ---------- */
#products{background:var(--white)}
.prod-head{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:1.5rem;margin-bottom:2rem}
.prod-filters{display:flex;flex-wrap:wrap;gap:.6rem;margin-bottom:2.4rem}
.prod-filters button{font-family:'JetBrains Mono',monospace;font-size:.74rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--steel-500);background:#fff;border:1px solid var(--line);border-radius:30px;padding:.5rem 1.05rem;cursor:pointer;transition:.2s}
.prod-filters button:hover{border-color:var(--brass);color:var(--brass)}
.prod-filters button.active{background:var(--brass);border-color:var(--brass);color:#20140a}
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.6rem}
@media(max-width:1080px){.prod-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){.prod-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.prod-grid{grid-template-columns:1fr}}
.card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .3s,box-shadow .3s,border-color .3s}
.card.hide{display:none}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:transparent}
.card::after{content:"";position:absolute;top:-1px;right:-1px;width:16px;height:16px;border:2px solid var(--brass);border-left:0;border-bottom:0;opacity:0;transition:opacity .3s;z-index:1}
.card:hover::after{opacity:1}
.card .thumb{aspect-ratio:1;display:grid;place-items:center;padding:2.6rem;background:#fff;position:relative}
.card .thumb img{max-height:100%;width:auto;object-fit:contain;mix-blend-mode:multiply;transition:transform .4s}
.card:hover .thumb img{transform:scale(1.08)}
.card .cat{position:absolute;top:14px;left:14px;font-family:'JetBrains Mono',monospace;font-size:.64rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--brass);background:var(--brass-soft);padding:.3rem .55rem;border-radius:2px}
.card .cat::before{content:"[ "}
.card .cat::after{content:" ]"}
.card .cap{padding:1.3rem 1.4rem 1.5rem;border-top:1px solid var(--line)}
.card .cap span{font-family:'Sora';font-weight:700;font-size:1.14rem;color:var(--ink)}

/* ---------- contact ---------- */
#contact{background:#fff}
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(2rem,5vw,4rem);align-items:stretch}
.info-panel{position:relative;background:linear-gradient(160deg,var(--steel-900),#0d1012);color:#fff;padding:clamp(1.8rem,3vw,2.6rem);overflow:hidden;clip-path:polygon(0 0,calc(100% - 30px) 0,100% 30px,100% 100%,0 100%)}
.info-panel::before{content:"";position:absolute;top:-40px;right:-40px;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(191,127,42,.28),transparent 70%)}
.info-panel h3{font-size:1.5rem;margin-bottom:.6rem;position:relative}
.info-panel .lead{color:#9aa5ac;font-size:.96rem;margin-bottom:2rem;position:relative}
.info-item{display:flex;gap:1rem;align-items:flex-start;margin-bottom:1.5rem;position:relative}
.info-item .ic{width:44px;height:44px;flex:none;border-radius:2px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);display:grid;place-items:center}
.info-item .ic svg{width:19px;height:19px;color:var(--brass-hi)}
.info-item h4{font-family:'JetBrains Mono',monospace;font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--brass-hi);margin-bottom:.25rem;font-weight:600}
.info-item a,.info-item p{color:#e4e7e9;font-size:.95rem}
.info-item a:hover{color:var(--brass-hi)}

form.enquiry{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(1.8rem,3vw,2.6rem);box-shadow:var(--shadow-sm)}
form.enquiry h3{font-size:1.4rem;color:var(--ink);margin-bottom:.4rem}
form.enquiry .sub{color:var(--steel-500);font-size:.94rem;margin-bottom:1.8rem}
.field{margin-bottom:1.15rem}
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:1.15rem}
label{display:block;font-family:'Inter',sans-serif;font-size:.74rem;letter-spacing:.03em;text-transform:uppercase;font-weight:600;color:var(--ink);margin-bottom:.4rem}
label .req{color:var(--brass)}
.input-wrap{position:relative}
.input-wrap>svg{position:absolute;left:.9rem;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--steel-400);pointer-events:none}
input,textarea{width:100%;background:var(--bg);border:1.5px solid var(--line);border-radius:2px;padding:.82rem .9rem .82rem 2.6rem;color:var(--ink);font-family:'Inter';font-size:.96rem;transition:.2s}
textarea{padding-left:.9rem;resize:vertical;min-height:120px}
input::placeholder,textarea::placeholder{color:var(--steel-400)}
input:focus,textarea:focus{outline:none;border-color:var(--brass);background:#fff;box-shadow:0 0 0 3px rgba(191,127,42,.16)}
.hp{position:absolute;left:-9999px;opacity:0}
form.enquiry .btn-gold{width:100%;justify-content:center;margin-top:.4rem}
.form-note{font-family:'Inter',sans-serif;font-size:.8rem;color:var(--steel-500);margin-top:1rem;text-align:center;display:flex;align-items:center;justify-content:center;gap:.5rem;min-height:1.4rem}
.form-note svg{width:16px;height:16px;flex:none}
.form-note.ok{color:#1a7a4a}.form-note.ok svg{color:#1a7a4a}
.form-note.err{color:#c0392b}.form-note.err svg{color:#c0392b}
.btn-gold.loading{opacity:.7;pointer-events:none}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr}.row-2{grid-template-columns:1fr}}

/* ---------- footer ---------- */
footer{background:#0d1012;color:#9aa5ac;padding:3.6rem 0 0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.5fr;gap:2.4rem}
.foot-grid h5{font-family:'Inter',sans-serif;text-transform:uppercase;letter-spacing:.12em;font-size:.76rem;color:#fff;margin-bottom:1.2rem;font-weight:700}
.foot-about .brand b{color:#fff}
.foot-about .brand small{color:var(--brass-hi)}
.foot-about p{font-size:.9rem;margin-top:1.1rem;line-height:1.75}
.foot-links{list-style:none;display:grid;gap:.65rem}
.foot-links a{font-size:.92rem;transition:.2s;display:inline-flex;align-items:center;gap:.5rem}
.foot-links a svg{width:14px;height:14px;color:var(--brass)}
.foot-links a:hover{color:var(--brass-hi);transform:translateX(3px)}
.foot-contact{font-size:.9rem;display:grid;gap:.85rem}
.foot-contact div{display:flex;gap:.6rem;align-items:flex-start}
.foot-contact svg{width:16px;height:16px;color:var(--brass);flex:none;margin-top:.2rem}
.foot-contact a:hover{color:var(--brass-hi)}
.foot-bar{border-top:1px solid rgba(255,255,255,.09);margin-top:3rem;padding:1.4rem 0;font-family:'Inter',sans-serif;font-size:.78rem}
.foot-bar .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:.6rem;color:#6f7980}
@media(max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.foot-grid{grid-template-columns:1fr}}

/* ---------- helpers ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition-duration:.01ms!important}.reveal{opacity:1;transform:none}}
.scroll-up{position:fixed;right:22px;bottom:22px;z-index:70;width:48px;height:48px;border-radius:2px;background:var(--brass);color:#20140a;border:0;cursor:pointer;opacity:0;pointer-events:none;transition:.3s;box-shadow:var(--shadow-md);display:grid;place-items:center}
.scroll-up svg{width:20px;height:20px}
.scroll-up.show{opacity:1;pointer-events:auto}
.scroll-up:hover{background:var(--brass-hi)}