/* =========================================================
   Sinar Multi Teknik — Service Water Heater
   Design tokens
   ========================================================= */
:root{
  --navy:#132A3A;
  --navy-2:#0D1F2C;
  --teal:#0E7C86;
  --teal-dark:#0A5E66;
  --amber:#E2984A;
  --amber-dark:#C97A2E;
  --bg:#F5F7F5;
  --surface:#FFFFFF;
  --line:#DEE3E0;
  --ink:#1C2B2E;
  --ink-soft:#57696C;
  --radius:10px;
  --font-display:'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body:'Source Sans 3', 'Segoe UI', sans-serif;
  --font-mono:'IBM Plex Mono', 'Courier New', monospace;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
}
img{max-width:100%;display:block;}
a{color:var(--teal-dark);text-decoration:none;}
a:hover{text-decoration:underline;}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--navy);line-height:1.15;margin:0 0 .5em;}
h1{font-size:clamp(1.9rem,4vw,2.8rem);letter-spacing:-.01em;}
h2{font-size:clamp(1.4rem,2.6vw,1.9rem);}
h3{font-size:1.15rem;}
p{margin:0 0 1em;color:var(--ink);}
.container{max-width:1100px;margin:0 auto;padding:0 20px;}
.lead{font-size:1.1rem;color:var(--ink-soft);max-width:62ch;}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px;}
@media (prefers-reduced-motion: reduce){*{animation:none!important;transition:none!important;}}

/* ---------- Eyebrow / kicker ---------- */
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--teal-dark);
  background:rgba(14,124,134,.08);
  border:1px solid rgba(14,124,134,.25);
  padding:3px 10px;
  border-radius:999px;
  margin-bottom:14px;
}

/* ---------- Header / Nav ---------- */
.site-header{
  background:var(--navy);
  color:#fff;
  position:sticky;top:0;z-index:50;
  border-bottom:3px solid var(--amber);
}
.nav-wrap{
  max-width:1100px;margin:0 auto;padding:0 20px;
  display:flex;align-items:center;justify-content:space-between;
  min-height:64px;
}
.brand{
  color:#fff;font-family:var(--font-display);font-weight:700;font-size:1.15rem;
  display:flex;align-items:center;gap:8px;
}
.brand:hover{text-decoration:none;opacity:.9;}
.brand .gauge-mark{width:26px;height:26px;flex:none;}
.main-nav{display:flex;gap:2px;align-items:center;flex-wrap:wrap;}
.main-nav > .nav-item{position:relative;}
.main-nav a.top-link{
  color:#DCE7E8;font-size:.92rem;font-weight:600;padding:10px 12px;display:inline-block;border-radius:6px;
}
.main-nav a.top-link:hover{color:#fff;background:rgba(255,255,255,.08);text-decoration:none;}
.dropdown{
  display:none;position:absolute;left:0;top:100%;
  background:var(--surface);color:var(--ink);min-width:240px;
  border:1px solid var(--line);border-radius:8px;box-shadow:0 12px 28px rgba(9,20,26,.18);
  padding:8px;margin-top:6px;
}
.nav-item:hover .dropdown,.nav-item:focus-within .dropdown{display:block;}
.dropdown a{display:block;padding:8px 10px;border-radius:6px;font-size:.9rem;color:var(--ink);}
.dropdown a:hover{background:var(--bg);text-decoration:none;color:var(--teal-dark);}
.cta-mini{background:var(--amber);color:var(--navy-2)!important;font-weight:700;border-radius:6px;padding:9px 14px!important;}
.cta-mini:hover{background:var(--amber-dark);}

/* ---------- Mobile nav toggle (pure CSS, no JS) ---------- */
.nav-toggle-checkbox{display:none;}
.nav-toggle-btn{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;cursor:pointer;flex:none;
}
.nav-toggle-btn span{display:block;width:24px;height:2px;background:#fff;border-radius:2px;}

@media (max-width:900px){
  .nav-wrap{flex-wrap:wrap;padding:10px 20px;}
  .nav-toggle-btn{display:flex;}
  .main-nav{
    display:none;width:100%;flex-direction:column;align-items:stretch;gap:0;
    max-height:75vh;overflow-y:auto;
    border-top:1px solid rgba(255,255,255,.12);margin-top:10px;padding-top:10px;
  }
  .nav-toggle-checkbox:checked ~ .main-nav{display:flex;}
  .main-nav > .nav-item{width:100%;}
  .main-nav a.top-link{width:100%;padding:12px 6px;}
  .dropdown{
    display:block;position:static;box-shadow:none;border:none;background:transparent;
    padding:0 0 6px 14px;margin:0;min-width:0;
  }
  .dropdown a{color:#C9D6D8;padding:8px 6px;}
  .dropdown a:hover{background:rgba(255,255,255,.06);color:#fff;}
  .cta-mini{margin-top:8px;text-align:center;}
}

/* ---------- Hero ---------- */
.hero{
  background:linear-gradient(180deg,var(--navy) 0%,var(--navy-2) 100%);
  color:#fff;padding:64px 0 56px;position:relative;overflow:hidden;
}
.hero .container{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;}
@media (max-width:820px){.hero .container{grid-template-columns:1fr;}}
.hero h1{color:#fff;}
.hero .lead{color:#C9D6D8;}
.hero-ctas{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px;}
.btn{
  display:inline-block;padding:12px 20px;border-radius:8px;font-weight:700;font-size:.95rem;
  border:2px solid transparent;
}
.btn-primary{background:var(--amber);color:var(--navy-2);}
.btn-primary:hover{background:var(--amber-dark);text-decoration:none;}
.btn-outline{border-color:rgba(255,255,255,.4);color:#fff;}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.08);text-decoration:none;}

/* ---------- Nameplate (signature element) ---------- */
.nameplate{
  background:#0F2836;
  border:1px solid rgba(255,255,255,.14);
  border-radius:6px;
  padding:18px 20px;
  position:relative;
  font-family:var(--font-mono);
}
.nameplate::before,.nameplate::after,.nameplate .rivet-l,.nameplate .rivet-r{
  content:"";position:absolute;width:6px;height:6px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%, #DDD, #777 70%);
}
.nameplate::before{top:8px;left:8px;}
.nameplate::after{top:8px;right:8px;}
.nameplate .rivet-l{bottom:8px;left:8px;}
.nameplate .rivet-r{bottom:8px;right:8px;}
.nameplate-title{
  font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:#89A6AB;margin-bottom:12px;
  border-bottom:1px dashed rgba(255,255,255,.18);padding-bottom:8px;
}
.nameplate-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 16px;}
.nameplate-stat b{display:block;font-size:1.5rem;color:#fff;font-weight:700;font-family:var(--font-display);}
.nameplate-stat span{font-size:.7rem;color:#8FA8AC;letter-spacing:.05em;}

/* ---------- Sections ---------- */
section{padding:52px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:70ch;margin-bottom:28px;}

/* ---------- Card grids ---------- */
.grid{display:grid;gap:18px;}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
@media (max-width:900px){.grid-4{grid-template-columns:repeat(2,1fr);}.grid-3{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr;}}

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;transition:border-color .15s, transform .15s;
}
.card:hover{border-color:var(--teal);transform:translateY(-2px);}
a.card{text-decoration:none;}
a.card:hover{text-decoration:none;}
.gallery-card img{border-radius:0;}

/* ---------- Lightbox (klik foto untuk perbesar, tanpa JS) ---------- */
.lightbox-overlay{
  display:none;position:fixed;inset:0;background:rgba(9,20,26,.97);
  align-items:center;justify-content:center;padding:24px;z-index:999;
}
.lightbox-overlay:target{display:flex;}
.lightbox-content{display:flex;flex-direction:column;align-items:center;max-width:100%;}
.lightbox-overlay img{max-width:100%;max-height:74vh;border-radius:8px 8px 0 0;box-shadow:0 20px 60px rgba(0,0,0,.5);display:block;}
.lightbox-caption{
  background:#0F2836;border-radius:0 0 8px 8px;padding:14px 18px;width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.lightbox-caption span{color:#C9D6D8;font-size:.88rem;font-weight:600;}
.lightbox-wa{padding:9px 16px;font-size:.85rem;flex:none;}
.lightbox-close{
  position:absolute;top:18px;right:22px;color:#fff;font-size:2rem;line-height:1;
  text-decoration:none;font-family:var(--font-display);width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;border-radius:50%;
  background:rgba(255,255,255,.12);
}
.lightbox-close:hover{background:rgba(255,255,255,.22);text-decoration:none;}
.card .tag{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--teal-dark);display:block;margin-bottom:8px;
}
.card h3{margin-bottom:8px;}
.card h3 a{color:var(--navy);}
.card p{font-size:.92rem;color:var(--ink-soft);margin-bottom:10px;}
.card .more{font-size:.85rem;font-weight:700;}

.chip-row{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  padding:8px 30px 8px 16px;font-size:.88rem;font-weight:600;color:var(--navy);
  position:relative;
}
.chip::after{
  content:"→";position:absolute;right:14px;top:50%;transform:translateY(-50%);
  color:var(--teal-dark);font-weight:700;font-size:.85em;
  transition:transform .15s;
}
.chip:hover{border-color:var(--teal);text-decoration:none;background:rgba(14,124,134,.06);}
.chip:hover::after{transform:translateY(-50%) translateX(3px);}

/* ---------- Process list ---------- */
.process{list-style:none;margin:0;padding:0;counter-reset:step;}
.process li{
  counter-increment:step;position:relative;padding:16px 0 16px 54px;border-top:1px solid var(--line);
}
.process li:first-child{border-top:none;}
.process li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:14px;
  font-family:var(--font-mono);font-weight:700;color:var(--teal-dark);
  background:rgba(14,124,134,.08);border:1px solid rgba(14,124,134,.25);
  width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.85rem;
}
.process h4{margin:0 0 4px;font-size:1rem;color:var(--navy);}
.process p{margin:0;font-size:.92rem;color:var(--ink-soft);}

/* ---------- Info panel ---------- */
.panel{
  background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--amber);
  border-radius:8px;padding:18px 20px;
}
.panel h4{margin:0 0 8px;color:var(--navy);}
.two-col{display:grid;grid-template-columns:1.5fr 1fr;gap:32px;}
@media (max-width:860px){.two-col{grid-template-columns:1fr;}}

ul.tick{list-style:none;padding:0;margin:0;}
ul.tick li{padding-left:26px;position:relative;margin-bottom:10px;font-size:.95rem;}
ul.tick li::before{content:"✓";position:absolute;left:0;top:0;color:var(--teal-dark);font-weight:700;}

/* ---------- FAQ ---------- */
.faq{max-width:78ch;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:8px;
  padding:4px 18px;margin-bottom:10px;
}
.faq-item summary{
  cursor:pointer;font-weight:700;color:var(--navy);padding:14px 28px 14px 0;position:relative;
  list-style:none;font-size:.98rem;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:0;top:12px;font-size:1.3rem;color:var(--teal-dark);font-weight:700;
}
.faq-item[open] summary::after{content:"–";}
.faq-item p{padding-bottom:14px;margin:0;color:var(--ink-soft);font-size:.92rem;}

/* ---------- Breadcrumb ---------- */
.breadcrumb{font-size:.82rem;color:var(--ink-soft);padding:14px 0;font-family:var(--font-mono);}
.breadcrumb a{color:var(--ink-soft);}
.breadcrumb span{color:var(--navy);}

/* ---------- Related links block ---------- */
.related{background:var(--bg);}
.related h2{margin-bottom:6px;}
.related .section-head p{color:var(--ink-soft);}
.related-block + .related-block{margin-top:34px;}
.related-block h3{font-size:1rem;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.06em;font-family:var(--font-mono);font-weight:600;margin-bottom:12px;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--teal-dark);color:#fff;border-radius:14px;padding:36px;
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;margin-bottom:6px;}
.cta-band p{color:#D6EDEE;margin:0;}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy-2);color:#B9CBCE;padding:48px 0 24px;margin-top:20px;}
.footer-grid{display:grid;grid-template-columns:1.2fr repeat(5,1fr);gap:24px;}
.footer-grid .col-merek ul{column-count:2;column-gap:16px;}
.footer-grid-compact{grid-template-columns:1.3fr 1fr 1fr 1fr;}
@media (max-width:1000px){.footer-grid{grid-template-columns:1fr 1fr 1fr;}.footer-grid-compact{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;}.footer-grid .col-merek ul{column-count:1;}.footer-grid-compact{grid-template-columns:1fr;}}
.footer-grid h4{color:#fff;font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;font-family:var(--font-mono);margin-bottom:14px;}
.footer-grid ul{list-style:none;margin:0;padding:0;}
.footer-grid li{margin-bottom:8px;}
.footer-grid a{color:#B9CBCE;font-size:.9rem;}
.footer-grid a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:32px;padding-top:20px;font-size:.8rem;color:#7E969A;}
.footer-legal-links{margin-bottom:12px;}
.footer-legal-links a{color:#9FB6BA;font-size:.82rem;}
.footer-legal-links a:hover{color:#fff;}
.footer-disclaimer{font-size:.72rem;line-height:1.5;color:#6E8488;max-width:70ch;margin-bottom:14px;}