/* ==========================================================================
   PT ARTHA FINANCIAL NUSANTARA — style.css
   Palette: deep emerald + brass gold + cream (from company profile PDF)
   ========================================================================== */

:root{
  --green-900:#0B2E27;
  --green-800:#0F3D33;
  --green-700:#123F35;
  --green-600:#1C5A4A;
  --green-500:#206B57;
  --gold:#C9A24A;
  --gold-light:#D4AF61;
  --cream:#F5F2EA;
  --paper:#FAF9F6;
  --white:#FFFFFF;
  --ink:#222A26;
  --ink-soft:#5C665F;
  --line:rgba(15,61,51,.14);
  --line-dark:rgba(245,242,234,.16);

  --font-sans:'Plus Jakarta Sans','Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --font-mono:'IBM Plex Mono','Noto Sans SC',ui-monospace,monospace;

  --wrap:1180px;
  --sp-section:clamp(64px,8vw,120px);
  --radius:4px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background:var(--paper);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.18;font-weight:800;letter-spacing:-.02em;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
button{font-family:inherit;}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px;}
.mono{font-family:var(--font-mono);font-weight:500;}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--gold);color:var(--green-900);
  padding:12px 20px;font-weight:700;
}
.skip-link:focus{left:12px;top:12px;}

:focus-visible{outline:2px solid var(--gold);outline-offset:3px;}

/* ---------- typography helpers ---------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:500;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--green-600);
  margin:0 0 18px;
  display:block;
}
.eyebrow-gold{color:var(--gold);}
.eyebrow.center{text-align:center;}

.section-title{
  font-size:clamp(1.75rem,3.4vw,2.6rem);
  max-width:20ch;
}
.section-lead{
  margin-top:18px;
  max-width:62ch;
  color:var(--ink-soft);
  font-size:1.05rem;
}
.lead{font-size:1.1rem;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 28px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-weight:700;font-size:.92rem;letter-spacing:.01em;
  cursor:pointer;
  transition:transform .25s var(--ease),background-color .25s,color .25s,border-color .25s,box-shadow .25s;
  text-align:center;
}
.btn-gold{background:var(--gold);color:var(--green-900);}
.btn-gold:hover{background:var(--gold-light);transform:translateY(-2px);box-shadow:0 10px 24px rgba(201,162,74,.28);}
.btn-ghost{border-color:rgba(245,242,234,.4);color:var(--cream);}
.btn-ghost:hover{border-color:var(--cream);background:rgba(245,242,234,.08);transform:translateY(-2px);}
.btn-sm{padding:11px 20px;font-size:.85rem;}
.btn-block{width:100%;}
.btn-wa{background:#1FA855;color:#fff;margin-top:8px;}
.btn-wa:hover{background:#188f47;transform:translateY(-2px);}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:18px 0;
  transition:background-color .35s var(--ease),padding .35s var(--ease),box-shadow .35s;
}
.site-header.scrolled{
  background:rgba(11,46,39,.96);
  backdrop-filter:blur(10px);
  padding:11px 0;
  box-shadow:0 1px 0 rgba(245,242,234,.1);
}
.header-inner{display:flex;align-items:center;gap:20px;}

.brand{display:flex;align-items:center;gap:12px;color:var(--cream);flex-shrink:0;}
.brand-mark{width:38px;height:38px;color:var(--gold);flex-shrink:0;transition:transform .4s var(--ease);}
.brand:hover .brand-mark{transform:rotate(-8deg);}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-weight:800;font-size:.82rem;letter-spacing:.02em;}
.brand-sub{
  font-family:var(--font-mono);font-size:.56rem;
  letter-spacing:.18em;text-transform:uppercase;color:var(--gold);
}

.nav{margin-left:auto;}
.nav-list{display:flex;gap:22px;}
.nav-list a{
  font-size:.84rem;font-weight:600;color:rgba(245,242,234,.82);
  position:relative;padding:6px 0;transition:color .25s;
  white-space:nowrap;
}
.nav-list a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1.5px;
  background:var(--gold);transition:width .3s var(--ease);
}
.nav-list a:hover{color:var(--cream);}
.nav-list a:hover::after{width:100%;}
.nav-mobile-extra{display:none;}

.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}

.lang-switch{display:flex;border:1px solid rgba(245,242,234,.28);border-radius:var(--radius);overflow:hidden;}
.lang-btn{
  background:transparent;border:0;
  padding:7px 11px;
  font-size:.72rem;font-weight:700;letter-spacing:.06em;
  color:rgba(245,242,234,.7);cursor:pointer;transition:background-color .25s,color .25s;
}
.lang-btn + .lang-btn{border-left:1px solid rgba(245,242,234,.2);}
.lang-btn:hover{color:var(--cream);}
.lang-btn.is-active{background:var(--gold);color:var(--green-900);}

.burger{
  display:none;width:42px;height:42px;
  background:transparent;border:1px solid rgba(245,242,234,.28);border-radius:var(--radius);
  cursor:pointer;padding:0;position:relative;
}
.burger span{
  display:block;width:18px;height:1.8px;background:var(--cream);
  margin:4px auto;transition:transform .3s var(--ease),opacity .2s;
}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(5.8px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.8px) rotate(-45deg);}

/* ---------- hero ---------- */
.hero{
  position:relative;
  min-height:100vh;
  min-height:100svh;
  display:flex;align-items:center;
  padding:140px 0 90px;
  background:var(--green-800);
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background:
    radial-gradient(120% 90% at 78% 12%, rgba(32,107,87,.85) 0%, rgba(15,61,51,0) 60%),
    radial-gradient(90% 70% at 8% 100%, rgba(11,46,39,.9) 0%, rgba(15,61,51,0) 65%),
    linear-gradient(140deg, var(--green-900) 0%, var(--green-700) 45%, var(--green-600) 100%);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(245,242,234,.028) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(245,242,234,.028) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(70% 60% at 60% 40%,#000 0%,transparent 100%);
  -webkit-mask-image:radial-gradient(70% 60% at 60% 40%,#000 0%,transparent 100%);
}
.hero-rules{position:absolute;left:0;top:0;bottom:0;width:120px;display:flex;gap:26px;padding-left:26px;}
.hero-rules i{display:block;width:1px;background:linear-gradient(180deg,transparent,rgba(201,162,74,.55) 30%,rgba(201,162,74,.55) 70%,transparent);}
.hero-mono{
  position:absolute;right:-40px;top:50%;transform:translateY(-50%);
  width:min(46vw,540px);height:auto;color:var(--gold);
  opacity:.09;pointer-events:none;
}
.hero-inner{position:relative;z-index:2;color:var(--cream);}
.hero-title{
  font-size:clamp(2rem,4.4vw,3.3rem);
  max-width:20ch;
  letter-spacing:-.03em;
  margin-bottom:26px;
}
.hero-title em{font-style:normal;color:var(--gold);}
.hero-lead{
  max-width:54ch;font-size:clamp(1rem,1.6vw,1.18rem);
  color:rgba(245,242,234,.8);margin-bottom:36px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:56px;}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:.7rem;letter-spacing:.18em;color:rgba(245,242,234,.55);
  padding-top:22px;border-top:1px solid var(--line-dark);
}
.hero-meta i{color:var(--gold);font-style:normal;}

/* ---------- sections ---------- */
section[id]{scroll-margin-top:84px;}
.section{padding:var(--sp-section) 0;}
.section-cream{background:var(--cream);}
.section-dark{background:var(--green-800);color:var(--cream);}
.section-dark .section-title,.section-dark h3{color:var(--cream);}
.section-dark .section-lead{color:rgba(245,242,234,.72);}
.section-head{margin-bottom:52px;max-width:70ch;}

.grid-split{display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(32px,6vw,80px);align-items:start;}
.grid-split p{color:var(--ink-soft);}
.grid-split .lead{color:var(--ink);}

/* facts */
.fact-row{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--line);
  margin-top:64px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.fact{background:var(--paper);padding:28px 22px;}
.fact-value{display:block;font-size:1.5rem;color:var(--green-700);letter-spacing:.02em;}
.fact-label{
  display:block;margin-top:8px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.13em;
  text-transform:uppercase;color:var(--ink-soft);
}

/* vision */
.vision{text-align:center;}
.vision-text{
  margin:0 auto;max-width:24ch;
  font-size:clamp(1.5rem,3.6vw,2.5rem);
  font-weight:700;line-height:1.32;letter-spacing:-.02em;
  color:var(--cream);
}
.vision-rule{width:64px;height:3px;background:var(--gold);margin:40px auto 0;}

/* cards */
.cards{display:grid;gap:22px;}
.cards-3{grid-template-columns:repeat(3,1fr);}
.cards-4{grid-template-columns:repeat(4,1fr);}
.card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:32px 28px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s;
}
.card:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(15,61,51,.10);border-color:rgba(201,162,74,.5);}
.card h3{font-size:1.06rem;margin-bottom:12px;}
.card p{color:var(--ink-soft);font-size:.95rem;}
.card-num{
  display:block;font-size:.75rem;letter-spacing:.15em;
  color:var(--gold);margin-bottom:18px;
}
.card-line{border-top:2px solid var(--gold);}
.card-dark{
  background:rgba(245,242,234,.045);
  border-color:var(--line-dark);
}
.card-dark p{color:rgba(245,242,234,.72);}
.card-dark:hover{background:rgba(245,242,234,.08);box-shadow:none;border-color:rgba(201,162,74,.55);}

/* ledger (legality) */
.ledger{border-top:1px solid var(--line);}
.ledger-row{
  display:grid;grid-template-columns:minmax(200px,.42fr) 1fr;
  gap:24px;padding:20px 4px;
  border-bottom:1px solid var(--line);
  transition:background-color .25s;
}
.ledger-row:hover{background:rgba(201,162,74,.06);}
.ledger-key{
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-soft);padding-top:3px;
}
.ledger-val{font-weight:600;color:var(--green-800);}

/* steps */
.steps{display:grid;gap:0;border-top:1px solid var(--line);}
.step{
  display:grid;grid-template-columns:88px 1fr;gap:24px;
  padding:30px 0;border-bottom:1px solid var(--line);
  align-items:start;
}
.step-num{font-size:.85rem;letter-spacing:.14em;color:var(--gold);padding-top:5px;}
.step h3{font-size:1.15rem;margin-bottom:8px;}
.step p{color:var(--ink-soft);max-width:64ch;}

/* contact */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(32px,5vw,64px);align-items:start;}
.info-block{padding-bottom:24px;margin-bottom:24px;border-bottom:1px solid var(--line);}
.info-block .eyebrow{margin-bottom:8px;}
.info-block p{color:var(--ink);}
.info-block a:hover{color:var(--green-600);text-decoration:underline;}

.contact-form-wrap{
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius);padding:clamp(24px,3.5vw,40px);
}
.field{margin-bottom:18px;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field label{
  display:block;margin-bottom:7px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.13em;
  text-transform:uppercase;color:var(--ink-soft);
}
.field input,.field textarea{
  width:100%;padding:13px 15px;
  border:1px solid var(--line);border-radius:var(--radius);
  font-family:inherit;font-size:1rem;color:var(--ink);
  background:var(--paper);
  transition:border-color .25s,background-color .25s;
}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--green-600);background:var(--white);
  box-shadow:0 0 0 3px rgba(32,107,87,.1);
}
.field textarea{resize:vertical;min-height:120px;}
.form-error{color:#B4402F;font-size:.88rem;margin-bottom:14px;font-weight:600;}
.form-note{margin-top:14px;font-size:.82rem;color:var(--ink-soft);}
.form-note a{color:var(--green-600);text-decoration:underline;}

/* footer */
.site-footer{background:var(--green-900);color:rgba(245,242,234,.75);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.4fr;gap:48px;padding-bottom:52px;}
.footer-brand .brand-mark{width:44px;height:44px;color:var(--gold);margin-bottom:18px;}
.footer-name{font-weight:800;color:var(--cream);margin-bottom:10px;}
.footer-desc{font-size:.92rem;max-width:38ch;}
.footer-nib{font-size:.7rem;letter-spacing:.12em;color:var(--gold);margin-top:16px;}
.footer-col h4{
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--gold);margin-bottom:18px;font-weight:500;
}
.footer-col li{margin-bottom:11px;font-size:.9rem;line-height:1.6;}
.footer-col a:hover{color:var(--cream);text-decoration:underline;}
.lang-switch-footer{margin-top:22px;display:inline-flex;}
.lang-switch-drawer{margin-bottom:18px;width:100%;}
.lang-switch-drawer .lang-btn{flex:1;padding:11px 0;font-size:.78rem;}
.footer-bottom{
  border-top:1px solid var(--line-dark);
  padding-top:24px;padding-bottom:28px;
  font-size:.82rem;color:rgba(245,242,234,.55);
}
.footer-bottom p{margin:0;}

/* whatsapp float */
.wa-float{
  position:fixed;right:20px;bottom:20px;z-index:90;
  width:54px;height:54px;border-radius:50%;
  background:#1FA855;color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 24px rgba(0,0,0,.24);
  transition:transform .3s var(--ease),box-shadow .3s;
}
.wa-float:hover{transform:scale(1.08);box-shadow:0 12px 30px rgba(0,0,0,.3);}

/* reveal animation */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width:1280px){
  .nav-list{gap:17px;}
  .nav-list a{font-size:.79rem;}
  .header-cta{display:none;}
}

@media (max-width:1080px){
  .cards-4{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .burger{display:block;}
  .nav{
    position:fixed;top:0;right:0;
    width:min(340px,86vw);height:100vh;height:100svh;
    background:var(--green-900);
    padding:96px 28px 40px;
    transform:translateX(100%);
    transition:transform .4s var(--ease);
    overflow-y:auto;
    box-shadow:-20px 0 50px rgba(0,0,0,.3);
    margin-left:0;
  }
  .nav.open{transform:translateX(0);}
  .nav-list{flex-direction:column;gap:0;}
  .nav-list li{border-bottom:1px solid var(--line-dark);}
  .nav-list a{display:block;padding:16px 0;font-size:1rem;}
  .nav-list a::after{display:none;}
  .nav-mobile-extra{display:block;margin-top:28px;}
  body.nav-open{overflow:hidden;}

  .grid-split{grid-template-columns:1fr;gap:28px;}
  .contact-grid{grid-template-columns:1fr;}
  .cards-3{grid-template-columns:repeat(2,1fr);}
  .fact-row{grid-template-columns:repeat(2,1fr);}
}

@media (max-width:640px){
  .wrap{padding:0 20px;}
  .site-header{padding:12px 0;}
  .site-header.scrolled{padding:9px 0;}
  .brand-mark{width:34px;height:34px;}
  .brand-text{display:none;}
  .header-actions{gap:8px;}
  .hero-rules{display:none;}
  .hero-mono{display:none;}
  .lang-btn{padding:6px 8px;font-size:.66rem;}

  .hero{padding:120px 0 72px;min-height:auto;}
  .hero-rules{width:60px;gap:14px;padding-left:14px;}
  .hero-title{max-width:100%;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .hero-meta{gap:8px;font-size:.62rem;letter-spacing:.14em;}

  .section-title{max-width:100%;}
  .section-head{margin-bottom:36px;}
  .cards-3,.cards-4{grid-template-columns:1fr;}
  .card{padding:26px 22px;}

  .fact-row{margin-top:44px;}
  .fact{padding:22px 18px;}
  .fact-value{font-size:1.25rem;}

  .ledger-row{grid-template-columns:1fr;gap:6px;padding:18px 2px;}
  .step{grid-template-columns:1fr;gap:8px;padding:24px 0;}
  .step-num{padding-top:0;}

  .field-row{grid-template-columns:1fr;gap:0;}
  .footer-grid{grid-template-columns:1fr;gap:38px;}
  .wa-float{width:48px;height:48px;right:16px;bottom:16px;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    transition-duration:.01ms !important;
  }
  .reveal{opacity:1;transform:none;}
}