/* ==========================================================================
   Mitra Sentosa Rekayasa — Sentosa Group
   Brand: Lexend Deca / Toska #57BEC9 · Teal Gelap #3A828E · Oranye #EF9035
   ========================================================================== */

/* ---------- Fonts (self-hosted, licensed TTF -> woff2) ---------- */
@font-face{font-family:'Lexend Deca';src:url('../fonts/lexenddeca-400.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Lexend Deca';src:url('../fonts/lexenddeca-500.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'Lexend Deca';src:url('../fonts/lexenddeca-600.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:'Lexend Deca';src:url('../fonts/lexenddeca-700.woff2') format('woff2');font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:'Lexend Deca';src:url('../fonts/lexenddeca-800.woff2') format('woff2');font-weight:800;font-style:normal;font-display:swap}
@font-face{font-family:'Lexend Deca';src:url('../fonts/lexenddeca-900.woff2') format('woff2');font-weight:900;font-style:normal;font-display:swap}

/* ---------- Tokens ---------- */
:root{
  --toska:#57BEC9;
  --toska-80:#79CBD4;
  --toska-30:#D5EDF0;
  --toska-10:#EEF8F9;
  --teal:#3A828E;
  --teal-90:#4E8F99;
  --teal-30:#C4DBDF;
  --teal-10:#EBF2F4;
  --ink:#123039;
  --ink-70:#4A6771;
  --ink-45:#7C929A;
  --orange:#EF9035;
  --orange-90:#F19B4A;
  --orange-10:#FDF0E1;
  --white:#fff;
  --paper:#F7FAFB;
  --line:#E2ECEE;

  --shell:1200px;
  --gutter:24px;
  --r-sm:10px;
  --r:16px;
  --r-lg:24px;
  --shadow:0 1px 2px rgba(18,48,57,.04),0 10px 30px -12px rgba(18,48,57,.16);
  --shadow-lg:0 2px 4px rgba(18,48,57,.05),0 24px 56px -20px rgba(18,48,57,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--white);color:var(--ink);
  font-family:'Lexend Deca',system-ui,-apple-system,'Segoe UI',sans-serif;
  font-weight:400;font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,svg{max-width:100%;height:auto;display:block}
a{color:inherit}
button{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul{padding:0;list-style:none}

/* ---------- Layout ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(64px,8vw,112px)}
.section--paper{background:var(--paper)}
.section--mist{background:linear-gradient(180deg,var(--toska-10) 0%,var(--white) 100%)}

.eyebrow{
  display:inline-block;padding:7px 16px;border-radius:999px;
  background:var(--teal-10);color:var(--teal);
  font-size:12px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;
}
.eyebrow--onteal{background:rgba(255,255,255,.16);color:#fff}

.h1{font-size:clamp(2.1rem,5.4vw,3.9rem);line-height:1.06;font-weight:800;letter-spacing:-.025em}
.h2{font-size:clamp(1.75rem,3.6vw,2.75rem);line-height:1.12;font-weight:800;letter-spacing:-.022em}
.h3{font-size:clamp(1.1rem,1.6vw,1.3rem);line-height:1.3;font-weight:700;letter-spacing:-.01em}
.lede{font-size:clamp(1rem,1.35vw,1.15rem);color:var(--ink-70);line-height:1.7}
.muted{color:var(--ink-70)}
.small{font-size:.875rem}

.head{max-width:640px}
.head .h2{margin-top:18px}
.head .lede{margin-top:16px}
.head--center{margin-inline:auto;text-align:center}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 26px;border-radius:999px;border:1.5px solid transparent;
  font-weight:700;font-size:.95rem;text-decoration:none;cursor:pointer;
  transition:transform .18s var(--ease),background-color .18s var(--ease),
             border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:focus-visible{outline:3px solid var(--orange);outline-offset:3px}
.btn--primary{background:var(--orange);color:#fff;box-shadow:0 10px 24px -12px rgba(239,144,53,.9)}
.btn--primary:hover{background:var(--orange-90)}
.btn--teal{background:var(--teal);color:#fff}
.btn--teal:hover{background:var(--teal-90)}
.btn--ghost{border-color:var(--teal-30);color:var(--teal);background:transparent}
.btn--ghost:hover{border-color:var(--teal);background:var(--teal-10)}
.btn--onphoto{border-color:rgba(255,255,255,.55);color:#fff;background:rgba(255,255,255,.08);backdrop-filter:blur(6px)}
.btn--onphoto:hover{background:rgba(255,255,255,.18);border-color:#fff}
.btn .i{width:18px;height:18px;flex:none}

/* ---------- Header ---------- */
.header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.9);
  backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.header.is-stuck{border-bottom-color:var(--line);box-shadow:0 6px 24px -18px rgba(18,48,57,.5)}
.header__bar{display:flex;align-items:center;gap:20px;height:74px}
.brand{display:flex;align-items:center;flex:none;text-decoration:none}
.brand img{height:38px;width:auto}
.nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav a{
  padding:9px 14px;border-radius:999px;text-decoration:none;font-size:.925rem;
  font-weight:600;color:var(--ink-70);transition:color .16s,background-color .16s;
}
.nav a:hover{color:var(--teal);background:var(--teal-10)}
.nav a.is-active{color:var(--teal);background:var(--teal-10)}
.header__aside{display:flex;align-items:center;gap:10px;flex:none}

.langtoggle{display:inline-flex;background:var(--teal-10);border-radius:999px;padding:3px}
.langtoggle button{
  border:0;background:transparent;color:var(--ink-45);cursor:pointer;
  padding:6px 12px;border-radius:999px;font-size:.8rem;font-weight:700;letter-spacing:.04em;
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.langtoggle button.is-active{background:var(--teal);color:#fff}
.langtoggle button:focus-visible{outline:2px solid var(--orange);outline-offset:2px}

.burger{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;
  width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:.2s var(--ease)}
.burger span::before,.burger span::after{content:'';position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:.2s var(--ease)}
.burger span::before{top:-6px}.burger span::after{top:6px}
.burger[aria-expanded="true"] span{background:transparent}
.burger[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.burger[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;isolation:isolate;color:#fff;overflow:hidden}
.hero__bg{position:absolute;inset:0;z-index:-2}
.hero__bg img{width:100%;height:100%;object-fit:cover;object-position:center 42%}
.hero::after{
  content:'';position:absolute;inset:0;z-index:-1;
  /* Dark enough on the left for text contrast, clearing to the right so the
     plant photography still reads as evidence rather than wallpaper. */
  background:
    linear-gradient(100deg,
      rgba(14,42,50,.95) 0%,
      rgba(28,82,92,.88) 40%,
      rgba(58,130,142,.60) 68%,
      rgba(58,130,142,.26) 100%);
}
.hero__bg::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,42,50,.28) 0%,rgba(14,42,50,0) 32%);
}
.hero__inner{padding-block:clamp(72px,11vw,132px)}
.hero__copy{max-width:760px}
.hero .h1{margin-top:22px}
.hero__sub{margin-top:20px;font-size:clamp(1rem,1.5vw,1.175rem);line-height:1.7;color:rgba(255,255,255,.9);max-width:60ch}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.hero__stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(20px,3vw,40px);margin-top:48px;
  padding-top:28px;border-top:1px solid rgba(255,255,255,.22);
}
.hero__stat b{display:block;font-size:clamp(1.55rem,3vw,2.15rem);font-weight:800;line-height:1;letter-spacing:-.02em}
.hero__stat span{display:block;margin-top:8px;font-size:.83rem;letter-spacing:.07em;text-transform:uppercase;color:rgba(255,255,255,.72)}

/* ---------- About split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,72px);align-items:center}
.stack-list{display:grid;gap:14px;margin-top:28px}
.stack-list li{display:flex;gap:12px;align-items:flex-start;color:var(--ink-70)}
.tick{flex:none;width:22px;height:22px;border-radius:50%;background:var(--toska-30);
  display:grid;place-items:center;margin-top:3px}
.tick svg{width:12px;height:12px;stroke:var(--teal);stroke-width:2.6;fill:none}

.figure{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
.figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.figure__badge{
  position:absolute;left:20px;bottom:20px;background:rgba(255,255,255,.95);
  border-radius:var(--r);padding:14px 18px;box-shadow:var(--shadow);
}
.figure__badge b{display:block;font-size:1.5rem;font-weight:800;color:var(--teal);line-height:1}
.figure__badge span{display:block;font-size:.78rem;letter-spacing:.07em;text-transform:uppercase;color:var(--ink-45);margin-top:6px}

/* ---------- Process wheel (Masalah & Solusi) ---------- */
.wheel{margin-top:clamp(40px,6vw,64px);display:grid;grid-template-columns:1fr auto 1fr;
  grid-template-rows:auto auto;gap:clamp(16px,3vw,40px);align-items:center;justify-items:center}
.wheel__hub{
  grid-column:2;grid-row:1 / span 2;width:clamp(150px,20vw,210px);aspect-ratio:1;
  border-radius:50%;background:#fff;border:10px solid var(--toska-30);
  display:grid;place-items:center;padding:20px;box-shadow:var(--shadow-lg);position:relative;
}
.wheel__hub img{width:78%}
.wheel__hub::before{
  content:'';position:absolute;inset:-26px;border-radius:50%;
  border:1.5px dashed var(--teal-30);
}
.node{
  display:flex;gap:16px;align-items:center;background:#fff;border:1px solid var(--line);
  border-radius:var(--r);padding:18px 20px;width:100%;max-width:320px;box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.node:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--toska)}
.node__ic{flex:none;width:48px;height:48px;border-radius:14px;background:var(--toska-10);display:grid;place-items:center}
.node__ic svg{width:24px;height:24px;stroke:var(--teal);stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.node:nth-child(even) .node__ic{background:var(--orange-10)}
.node:nth-child(even) .node__ic svg{stroke:var(--orange)}
.node b{display:block;font-weight:700;font-size:1rem;line-height:1.25}
.node span{display:block;font-size:.83rem;color:var(--ink-45);margin-top:3px}
.wheel__n1{grid-column:1;grid-row:1;justify-self:end}
.wheel__n2{grid-column:3;grid-row:1;justify-self:start}
.wheel__n3{grid-column:1;grid-row:2;justify-self:end}
.wheel__n4{grid-column:3;grid-row:2;justify-self:start}

/* ---------- Service cards ---------- */
.grid{display:grid;gap:20px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid--head{margin-top:clamp(40px,5vw,56px)}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--toska)}
.card__ic{width:52px;height:52px;border-radius:15px;background:var(--toska-10);display:grid;place-items:center;margin-bottom:20px}
.card__ic svg{width:26px;height:26px;stroke:var(--teal);stroke-width:1.7;fill:none;stroke-linecap:round;stroke-linejoin:round}
.card:nth-child(3n+2) .card__ic{background:var(--orange-10)}
.card:nth-child(3n+2) .card__ic svg{stroke:var(--orange)}
.card p{margin-top:10px;color:var(--ink-70);font-size:.94rem;line-height:1.65}

/* ---------- Benefits ---------- */
.benefit{border-top:2px solid var(--toska-30);padding-top:20px}
.benefit em{display:block;font-style:normal;font-weight:800;font-size:.95rem;color:var(--toska);letter-spacing:.06em}
.benefit b{display:block;margin-top:12px;font-weight:700;font-size:1.05rem;line-height:1.3}
.benefit p{margin-top:8px;color:var(--ink-70);font-size:.92rem}

/* ---------- Portfolio ---------- */
.project{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;height:100%;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.project:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.project__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--teal-10)}
.project__media img{width:100%;height:100%;object-fit:cover;object-position:center 32%;transition:transform .5s var(--ease)}
.project:hover .project__media img{transform:scale(1.045)}
.project__tag{
  position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);color:var(--teal);
  border-radius:999px;padding:6px 13px;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
}
.project__body{padding:24px;display:flex;flex-direction:column;gap:8px;flex:1}
.project__client{font-size:.8rem;letter-spacing:.07em;text-transform:uppercase;color:var(--ink-45);font-weight:600}
.project__body p{color:var(--ink-70);font-size:.92rem;margin-top:2px}
.project__result{
  margin-top:auto;padding-top:16px;border-top:1px dashed var(--line);
  font-weight:700;font-size:.92rem;color:var(--orange);
}
.portfolio__note{margin-top:28px;font-size:.82rem;color:var(--ink-45);text-align:center}

/* ---------- Mobile slider (slider.js) ---------- */
.slider__dots{display:none}
@media (max-width:640px){
  .grid.is-slider{
    display:flex;gap:16px;overflow-x:auto;overflow-y:hidden;
    scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
    scrollbar-width:none;padding-bottom:4px;
  }
  .grid.is-slider::-webkit-scrollbar{display:none}
  .grid.is-slider > *{flex:0 0 86%;scroll-snap-align:center}
  .slider__dots{display:flex;justify-content:center;gap:8px;margin-top:20px}
  .slider__dot{
    width:8px;height:8px;padding:0;border:0;border-radius:50%;
    background:var(--teal-30);cursor:pointer;transition:background-color .2s,width .2s;
  }
  .slider__dot.is-active{background:var(--teal);width:22px;border-radius:999px}
}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;background:var(--teal);color:#fff;isolation:isolate}
.cta::before{
  content:'';position:absolute;z-index:-1;width:620px;height:620px;border-radius:50%;
  right:-190px;top:-260px;background:radial-gradient(circle,rgba(87,190,201,.55) 0%,rgba(87,190,201,0) 70%);
}
.cta::after{
  content:'';position:absolute;z-index:-1;width:420px;height:420px;border-radius:50%;
  left:-160px;bottom:-220px;background:radial-gradient(circle,rgba(239,144,53,.35) 0%,rgba(239,144,53,0) 70%);
}
.cta .h2{color:#fff}
.cta__lede{margin-top:16px;color:rgba(255,255,255,.85);font-size:1.05rem;max-width:56ch}
.cta__row{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.cta__person{
  margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.22);
  font-size:.9rem;color:rgba(255,255,255,.8);
}
.cta__person b{color:#fff;font-weight:700}

/* ---------- Footer ---------- */
.footer{background:var(--paper);border-top:1px solid var(--line)}
.footer__top{background:var(--teal);color:#fff;text-align:center;padding:22px var(--gutter)}
.footer__top b{font-size:clamp(1.1rem,2.2vw,1.4rem);font-weight:800;letter-spacing:-.01em}
.footer__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;padding-block:48px}
.footer h4{font-size:.95rem;font-weight:700;color:var(--teal);margin-bottom:12px}
.footer address{font-style:normal;color:var(--ink-70);font-size:.92rem;line-height:1.7}
.footer .phone{margin-top:12px;font-size:.92rem;color:var(--ink-70)}
.footer .phone b{color:var(--teal);font-weight:700}
.footer .phone a{text-decoration:none}
.footer .phone a:hover{text-decoration:underline}
.footer__bottom{
  border-top:1px solid var(--line);padding-block:20px;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;font-size:.85rem;color:var(--ink-45);
}
.footer__bottom nav{display:flex;gap:18px;flex-wrap:wrap}
.footer__bottom a{text-decoration:none}
.footer__bottom a:hover{color:var(--teal);text-decoration:underline}

/* ---------- Contact page ---------- */
.contact{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,64px);align-items:start}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(24px,3vw,36px);box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-size:.85rem;font-weight:600;margin-bottom:7px}
.field input,.field textarea,.field select{
  width:100%;padding:13px 15px;border:1.5px solid var(--line);border-radius:var(--r-sm);
  font:inherit;font-size:.95rem;color:var(--ink);background:#fff;
  transition:border-color .16s,box-shadow .16s;
}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:0;border-color:var(--toska);box-shadow:0 0 0 4px var(--toska-10);
}
.field textarea{min-height:130px;resize:vertical}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.formnote{margin-top:14px;font-size:.82rem;color:var(--ink-45)}
.formmsg{margin-top:16px;padding:14px 16px;border-radius:var(--r-sm);font-size:.9rem;display:none}
.formmsg.is-ok{display:block;background:var(--toska-10);color:var(--teal);border:1px solid var(--toska-30)}
.formmsg.is-err{display:block;background:var(--orange-10);color:#a4571a;border:1px solid #f3cfa4}

.infocard{background:var(--teal-10);border-radius:var(--r-lg);padding:clamp(24px,3vw,32px)}
.infocard h3{margin-bottom:6px}
.infolist{display:grid;gap:20px;margin-top:22px}
.infolist li{display:flex;gap:14px;align-items:flex-start}
.infolist .ic{flex:none;width:40px;height:40px;border-radius:12px;background:#fff;display:grid;place-items:center}
.infolist .ic svg{width:19px;height:19px;stroke:var(--teal);stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.infolist b{display:block;font-size:.8rem;letter-spacing:.07em;text-transform:uppercase;color:var(--ink-45);font-weight:600}
.infolist a,.infolist span{display:block;color:var(--ink);font-weight:600;text-decoration:none;word-break:break-word}
.infolist a:hover{color:var(--teal);text-decoration:underline}

/* ---------- Page hero (inner pages) ---------- */
.phero{background:linear-gradient(135deg,var(--teal) 0%,#2C6873 100%);color:#fff;padding-block:clamp(56px,7vw,88px)}
.phero .h1{margin-top:18px;font-size:clamp(1.9rem,4.4vw,3.1rem)}
.phero p{margin-top:16px;color:rgba(255,255,255,.85);max-width:62ch;font-size:1.05rem}

/* ---------- Scroll reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .btn:hover,.card:hover,.project:hover,.node:hover{transform:none}
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .grid--3{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .burger{display:inline-flex}
  .nav{
    position:absolute;left:var(--gutter);right:var(--gutter);top:calc(100% + 8px);
    flex-direction:column;align-items:stretch;gap:2px;background:#fff;border:1px solid var(--line);
    border-radius:var(--r);padding:10px;box-shadow:var(--shadow-lg);display:none;
  }
  .nav.is-open{display:flex}
  .nav a{padding:12px 14px;border-radius:var(--r-sm)}
  .header__bar{position:relative}
  .split{grid-template-columns:1fr}
  .contact{grid-template-columns:1fr}
  .wheel{grid-template-columns:1fr;grid-template-rows:auto}
  .wheel__hub{grid-column:1;grid-row:1;order:-1}
  .wheel__n1,.wheel__n2,.wheel__n3,.wheel__n4{grid-column:1;grid-row:auto;justify-self:stretch}
  .node{max-width:none}
}
@media (max-width:640px){
  :root{--gutter:18px}
  .grid--3,.grid--2,.grid--4{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .hero__stats{grid-template-columns:1fr;gap:20px}
  .btn{padding:13px 22px;font-size:.9rem}
  .cta__row .btn,.hero__cta .btn{flex:1 1 100%}
}