/* ============================================================
   Nusantara Serbajaya Sdn. Bhd. — Landing Page Styles
   Industrial petroleum-teal palette · graphite neutrals · amber accent
   ============================================================ */

@import url('https://api.fontshare.com/v2/css?f[]=satoshi@500,700,900&f[]=general-sans@400,500,600&display=swap');
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@500;600&display=swap');

/* ---------- Design Tokens ---------- */
:root,
[data-theme='light'] {
  --font-display: 'Satoshi', 'Helvetica Neue', sans-serif;
  --font-body: 'General Sans', 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.82rem + 0.25vw, 0.9375rem);
  --text-base: clamp(1rem, 0.96rem + 0.2vw, 1.075rem);
  --text-lg: clamp(1.18rem, 1.05rem + 0.6vw, 1.4rem);
  --text-xl: clamp(1.5rem, 1.25rem + 1.1vw, 2.1rem);
  --text-2xl: clamp(2rem, 1.3rem + 2.6vw, 3.25rem);
  --text-hero: clamp(2.6rem, 1.2rem + 6.2vw, 5.2rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  /* Light — warm neutral surfaces, petroleum teal */
  --bg: #f3f4f1;
  --surface: #ffffff;
  --surface-2: #eceee9;
  --surface-offset: #e7e9e4;
  --border: #d4d8d2;
  --divider: #e2e5df;
  --text: #141d1c;
  --text-muted: #56655f;
  --text-faint: #8d9b94;
  --primary: #01696f;
  --primary-hover: #0c4e54;
  --primary-soft: #d7e8e6;
  --accent: #b5701a;
  --accent-soft: #f0e3cf;
  --on-primary: #f3fbfa;

  --radius-sm: 0.4rem; --radius-md: 0.65rem; --radius-lg: 1rem; --radius-xl: 1.5rem; --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(20,29,28,0.06);
  --shadow-md: 0 6px 20px rgba(20,29,28,0.08);
  --shadow-lg: 0 18px 48px rgba(20,29,28,0.14);
  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);
  --content: 1200px;
}

[data-theme='dark'] {
  --bg: #0d1416;
  --surface: #131d1f;
  --surface-2: #182427;
  --surface-offset: #1c292c;
  --border: #2b3a3d;
  --divider: #21302f;
  --text: #dde6e3;
  --text-muted: #8ea39d;
  --text-faint: #5c6f6a;
  --primary: #2ea6ae;
  --primary-hover: #4fc0c7;
  --primary-soft: #15302f;
  --accent: #e8a14a;
  --accent-soft: #2a2418;
  --on-primary: #08191a;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 6px 22px rgba(0,0,0,0.35);
  --shadow-lg: 0 20px 54px rgba(0,0,0,0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg: #0d1416; --surface: #131d1f; --surface-2: #182427; --surface-offset: #1c292c;
    --border: #2b3a3d; --divider: #21302f; --text: #dde6e3; --text-muted: #8ea39d; --text-faint: #5c6f6a;
    --primary: #2ea6ae; --primary-hover: #4fc0c7; --primary-soft: #15302f; --accent: #e8a14a; --accent-soft: #2a2418; --on-primary: #08191a;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3); --shadow-md: 0 6px 22px rgba(0,0,0,0.35); --shadow-lg: 0 20px 54px rgba(0,0,0,0.5);
  }
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; scroll-behavior: smooth; scroll-padding-top: 5rem; }
body { min-height: 100dvh; line-height: 1.6; font-family: var(--font-body); font-size: var(--text-base); color: var(--text); background: var(--bg); }
img, svg { display: block; max-width: 100%; height: auto; }
a, button { transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition); }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.1; text-wrap: balance; font-weight: 700; letter-spacing: -0.01em; }
p, li { text-wrap: pretty; max-width: 70ch; }
::selection { background: color-mix(in oklab, var(--primary) 30%, transparent); }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: var(--radius-sm); }
button { cursor: pointer; background: none; border: none; color: inherit; font: inherit; }
a { color: inherit; text-decoration: none; }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }

.container { width: min(var(--content), 92vw); margin-inline: auto; }
.eyebrow { font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); }
.section { padding-block: clamp(var(--space-16), 7vw, var(--space-32)); }
.section-head { max-width: 62ch; margin-bottom: clamp(var(--space-8), 4vw, var(--space-16)); }
.section-head h2 { font-size: var(--text-2xl); margin-top: var(--space-3); }
.section-head p { color: var(--text-muted); margin-top: var(--space-4); font-size: var(--text-base); }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in oklab, var(--bg) 82%, transparent); backdrop-filter: blur(14px); border-bottom: 1px solid transparent; transition: border-color var(--transition), box-shadow var(--transition); }
.site-header[data-scrolled="true"] { border-color: var(--border); box-shadow: var(--shadow-sm); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 4.5rem; gap: var(--space-6); }
.brand { display: flex; align-items: center; gap: 0.7rem; }
.brand .logo-mark { width: 34px; height: 34px; color: var(--primary); flex-shrink: 0; }
.brand .wordmark { display: flex; flex-direction: column; line-height: 1; }
.brand .wordmark .name { font-family: var(--font-display); font-weight: 900; font-size: 1.02rem; letter-spacing: 0.01em; color: var(--text); }
.brand .wordmark .tag { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); margin-top: 3px; }
.nav-links { display: flex; align-items: center; gap: var(--space-8); list-style: none; }
.nav-links a { font-size: var(--text-sm); font-weight: 500; color: var(--text-muted); }
.nav-links a:hover { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: var(--space-4); }
.theme-toggle { display: grid; place-items: center; width: 38px; height: 38px; border-radius: var(--radius-full); border: 1px solid var(--border); color: var(--text-muted); }
.theme-toggle:hover { color: var(--text); border-color: var(--text-faint); }
.nav-toggle { display: none; width: 38px; height: 38px; place-items: center; border-radius: var(--radius-sm); border: 1px solid var(--border); color: var(--text); }

.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.7rem 1.3rem; border-radius: var(--radius-full); font-size: var(--text-sm); font-weight: 600; font-family: var(--font-body); border: 1px solid transparent; }
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-ghost { border-color: var(--border); color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--text-faint); background: var(--surface-2); }
.btn-light { background: rgba(255,255,255,0.12); color: #fff; border-color: rgba(255,255,255,0.28); backdrop-filter: blur(6px); }
.btn-light:hover { background: rgba(255,255,255,0.2); }

@media (max-width: 880px) {
  .nav-links { position: fixed; inset: 4.5rem 0 auto 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--surface); border-bottom: 1px solid var(--border); padding: var(--space-4) 0; box-shadow: var(--shadow-lg); transform: translateY(-130%); transition: transform 0.35s cubic-bezier(0.16,1,0.3,1); }
  .nav-links[data-open="true"] { transform: translateY(0); }
  .nav-links li { padding: var(--space-3) 6vw; border-top: 1px solid var(--divider); }
  .nav-links li:first-child { border-top: none; }
  .nav-toggle { display: grid; }
  .nav-actions .btn-primary { display: none; }
}

/* ---------- Hero ---------- */
.hero { position: relative; min-height: clamp(560px, 88vh, 880px); display: flex; align-items: flex-end; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-bg::after { content: ""; position: absolute; inset: 0; background:
  linear-gradient(100deg, rgba(8,16,18,0.92) 0%, rgba(8,16,18,0.72) 38%, rgba(8,16,18,0.28) 72%, rgba(8,16,18,0.5) 100%),
  linear-gradient(0deg, rgba(8,16,18,0.7) 0%, rgba(8,16,18,0) 42%); }
.hero-inner { position: relative; z-index: 1; padding-block: clamp(var(--space-20), 8vw, var(--space-32)); color: #fff; width: min(var(--content), 92vw); margin-inline: auto; }
.hero .eyebrow { color: var(--accent); }
.hero h1 { color: #fff; font-size: var(--text-hero); font-weight: 900; margin-top: var(--space-4); max-width: 16ch; letter-spacing: -0.02em; }
.hero .lead { color: rgba(255,255,255,0.82); font-size: var(--text-lg); max-width: 54ch; margin-top: var(--space-6); line-height: 1.5; }
.hero-cta { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-top: var(--space-8); }
.hero-meta { display: flex; flex-wrap: wrap; gap: clamp(var(--space-6), 4vw, var(--space-12)); margin-top: clamp(var(--space-10), 6vw, var(--space-16)); }
.hero-meta .item { display: flex; flex-direction: column; gap: 2px; }
.hero-meta .num { font-family: var(--font-display); font-weight: 900; font-size: var(--text-xl); color: #fff; line-height: 1; }
.hero-meta .lbl { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.62); }

/* ---------- Pillars / About ---------- */
.pillars { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6); }
.pillar { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: clamp(var(--space-6), 3vw, var(--space-10)); position: relative; overflow: hidden; }
.pillar::before { content: ""; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--primary); }
.pillar .index { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--accent); letter-spacing: 0.1em; }
.pillar h3 { font-size: var(--text-xl); margin-top: var(--space-3); }
.pillar p { color: var(--text-muted); margin-top: var(--space-3); font-size: var(--text-sm); }
.pillar ul { list-style: none; margin-top: var(--space-5); display: grid; gap: var(--space-2); }
.pillar ul li { font-size: var(--text-sm); color: var(--text); display: flex; gap: 0.55rem; align-items: flex-start; }
.pillar ul li::before { content: ""; flex-shrink: 0; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); margin-top: 0.55em; }

@media (max-width: 760px) { .pillars { grid-template-columns: 1fr; } }

/* ---------- Services ---------- */
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-5); }
.svc { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: clamp(var(--space-6), 3vw, var(--space-8)); transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition); display: flex; flex-direction: column; }
.svc:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.svc .ic { width: 52px; height: 52px; border-radius: var(--radius-md); background: var(--primary-soft); color: var(--primary); display: grid; place-items: center; margin-bottom: var(--space-5); }
.svc .ic svg { width: 28px; height: 28px; }
.svc .code { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--text-faint); letter-spacing: 0.1em; }
.svc h3 { font-size: var(--text-lg); margin-top: var(--space-2); }
.svc > p { color: var(--text-muted); font-size: var(--text-sm); margin-top: var(--space-3); }
.svc ul { list-style: none; margin-top: var(--space-5); display: grid; gap: var(--space-2); }
.svc ul li { font-size: var(--text-sm); color: var(--text); display: flex; gap: 0.55rem; align-items: flex-start; }
.svc ul li::before { content: "+"; color: var(--accent); font-weight: 700; flex-shrink: 0; }
@media (max-width: 760px) { .services-grid { grid-template-columns: 1fr; } }

/* ---------- Feature split (image + text) ---------- */
.feature { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(var(--space-8), 5vw, var(--space-16)); align-items: center; }
.feature.flip { grid-template-columns: 0.95fr 1.05fr; }
.feature-media { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); aspect-ratio: 4/3; box-shadow: var(--shadow-lg); }
.feature-media img { width: 100%; height: 100%; object-fit: cover; }
.feature-text h2 { font-size: var(--text-xl); margin-top: var(--space-3); }
.feature-text > p { color: var(--text-muted); margin-top: var(--space-4); }
.feature-list { list-style: none; margin-top: var(--space-6); display: grid; gap: var(--space-4); }
.feature-list li { display: flex; gap: var(--space-3); align-items: flex-start; }
.feature-list .k { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--accent); flex-shrink: 0; min-width: 2.2em; padding-top: 2px; }
.feature-list .v b { font-weight: 600; }
.feature-list .v span { display: block; color: var(--text-muted); font-size: var(--text-sm); margin-top: 2px; }
@media (max-width: 820px) { .feature, .feature.flip { grid-template-columns: 1fr; } .feature-media { order: -1; } }

/* ---------- Sectors ---------- */
.sectors { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-3); }
.sector { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: var(--space-6) var(--space-4); text-align: center; transition: border-color var(--transition), transform var(--transition), background var(--transition); }
.sector:hover { border-color: var(--primary); transform: translateY(-3px); background: var(--surface-2); }
.sector .ic { width: 34px; height: 34px; color: var(--primary); margin: 0 auto var(--space-3); }
.sector h3 { font-size: var(--text-sm); font-weight: 600; font-family: var(--font-body); }
@media (max-width: 980px) { .sectors { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .sectors { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Capability ---------- */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
.cap { padding: var(--space-6); border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); }
.cap .ic { width: 30px; height: 30px; color: var(--accent); margin-bottom: var(--space-4); }
.cap h3 { font-size: var(--text-sm); font-weight: 700; font-family: var(--font-body); }
.cap p { color: var(--text-muted); font-size: var(--text-xs); margin-top: var(--space-2); }
@media (max-width: 880px) { .cap-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .cap-grid { grid-template-columns: 1fr; } }

/* ---------- Process ---------- */
.process { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-3); counter-reset: step; }
.step { position: relative; padding: var(--space-6) var(--space-4) var(--space-6) 0; }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-family: var(--font-mono); font-size: var(--text-xs); color: var(--accent); display: block; margin-bottom: var(--space-3); }
.step h3 { font-size: var(--text-sm); font-weight: 700; font-family: var(--font-body); }
.step p { color: var(--text-muted); font-size: var(--text-xs); margin-top: var(--space-2); }
.step:not(:last-child)::after { content: ""; position: absolute; top: 1.6rem; right: -0.5rem; width: 1rem; height: 1px; background: var(--border); }
@media (max-width: 900px) { .process { grid-template-columns: repeat(2, 1fr); } .step:not(:last-child)::after { display: none; } }

/* ---------- CTA band ---------- */
.cta-band { position: relative; overflow: hidden; border-radius: var(--radius-xl); padding: clamp(var(--space-12), 6vw, var(--space-24)) clamp(var(--space-8), 5vw, var(--space-16)); background: var(--primary); color: var(--on-primary); text-align: center; }
.cta-band h2 { color: var(--on-primary); font-size: var(--text-2xl); max-width: 18ch; margin-inline: auto; }
.cta-band p { color: color-mix(in oklab, var(--on-primary) 82%, transparent); margin-top: var(--space-4); margin-inline: auto; }
.cta-band .hero-cta { justify-content: center; margin-top: var(--space-8); }
.cta-band .btn-primary { background: var(--on-primary); color: var(--primary); }
.cta-band .btn-primary:hover { background: #fff; }
.cta-band .btn-light { color: #fff; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--surface); padding-block: clamp(var(--space-12), 6vw, var(--space-20)) var(--space-8); }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: var(--space-10); }
.foot-brand .brand { margin-bottom: var(--space-4); }
.foot-brand p { color: var(--text-muted); font-size: var(--text-sm); }
.foot-col h4 { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); margin-bottom: var(--space-4); }
.foot-col ul { list-style: none; display: grid; gap: var(--space-3); }
.foot-col a { color: var(--text-muted); font-size: var(--text-sm); }
.foot-col a:hover { color: var(--primary); }
.foot-contact li { color: var(--text-muted); font-size: var(--text-sm); display: flex; gap: 0.5rem; align-items: flex-start; }
.foot-contact svg { width: 16px; height: 16px; color: var(--primary); flex-shrink: 0; margin-top: 2px; }
.foot-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-3); margin-top: clamp(var(--space-10), 5vw, var(--space-16)); padding-top: var(--space-6); border-top: 1px solid var(--divider); font-size: var(--text-xs); color: var(--text-faint); }
@media (max-width: 820px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .foot-grid { grid-template-columns: 1fr; } }

/* ---------- Reveal animation ---------- */
.reveal { transform: translateY(20px); transition: transform 0.7s cubic-bezier(0.16,1,0.3,1); }
.reveal.in { transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { transform: none; } }