/* =============================================================
   CV BUANA SINAR GHIFARI — Base layer
   Tokens · reset · typography · shared primitives
   Signature motif: coating technical-data-sheet (TDS) readouts
   ============================================================= */

:root{
  /* Surfaces */
  --cream:#F8F4EC;
  --cream-2:#F2ECDE;      /* alternating band */
  --cream-3:#EFE7D8;
  --paper:#FFFFFF;

  /* Ink */
  --ink:#1A1613;          /* warm near-black */
  --ink-2:#524A41;
  --muted:#8B8073;
  --line:#E7DDCB;
  --line-2:#DBCFB9;

  /* Brand */
  --red:#B32025;
  --red-700:#8F1519;
  --red-500:#C4272C;
  --red-400:#D2312B;
  --red-wash:#F6E9E4;
  --glow:179,32,37;       /* rgba base for glow */

  /* Blueprint accent (used sparingly in spec surfaces) */
  --blue-line:#C9D6DE;

  /* Radii */
  --r-xs:6px; --r-sm:10px; --r-md:16px; --r-lg:22px; --r-xl:30px; --r-pill:999px;

  /* Shadows — very soft */
  --sh-1:0 1px 2px rgba(26,22,19,.04), 0 2px 6px rgba(26,22,19,.05);
  --sh-2:0 6px 20px -8px rgba(26,22,19,.14), 0 2px 6px rgba(26,22,19,.05);
  --sh-3:0 24px 60px -22px rgba(26,22,19,.28), 0 8px 24px -16px rgba(26,22,19,.18);
  --sh-red:0 18px 40px -16px rgba(var(--glow),.5);

  /* Type */
  --f-display:"Archivo","Helvetica Neue",Arial,sans-serif;
  --f-body:"Inter","Helvetica Neue",Arial,sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;

  /* Rhythm */
  --pad:clamp(20px,5vw,120px);
  --gap:clamp(28px,4vw,64px);
  --sec:clamp(88px,10vw,168px);
  --maxw:1280px;

  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  margin:0;
  background:var(--cream);
  color:var(--ink);
  font-family:var(--f-body);
  font-size:17px;
  line-height:1.6;
  font-feature-settings:"cv05","ss01";
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--f-display);font-weight:800;letter-spacing:-.02em;line-height:1.02}
p{margin:0}
::selection{background:var(--red);color:#fff}

/* ---- Layout primitives ---- */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--pad)}
.section{position:relative;padding-block:var(--sec)}
.band{background:var(--cream-2)}
.band-paper{background:var(--paper)}

/* ---- Eyebrow / spec label (TDS motif) ---- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--f-mono);font-size:12px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--red);
}
.eyebrow::before{
  content:"";width:26px;height:1px;background:var(--red);opacity:.6;
}
.eyebrow--plain{color:var(--muted)}
.eyebrow--plain::before{background:var(--line-2);opacity:1}

/* ---- Section heading block ---- */
.head{max-width:760px}
.head h2{
  font-size:clamp(30px,4.4vw,58px);
  line-height:1.03;margin-top:20px;
}
.head p{margin-top:20px;color:var(--ink-2);font-size:clamp(16px,1.6vw,19px);max-width:60ch}

/* ---- Buttons ---- */
.btn{
  --bg:var(--red);--fg:#fff;
  position:relative;display:inline-flex;align-items:center;gap:10px;
  padding:15px 26px;border-radius:var(--r-pill);
  background:var(--bg);color:var(--fg);font-weight:600;font-size:15.5px;
  letter-spacing:-.01em;isolation:isolate;overflow:hidden;
  box-shadow:var(--sh-red);
  transition:transform .5s var(--ease-out),box-shadow .5s var(--ease-out);
  will-change:transform;
}
.btn::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(120deg,var(--red-700),var(--red),var(--red-400));
  background-size:200% 100%;background-position:0% 0%;
  transition:background-position .6s var(--ease);
}
.btn:hover{transform:translateY(-2px);box-shadow:0 26px 50px -18px rgba(var(--glow),.62)}
.btn:hover::before{background-position:100% 0%}
.btn:focus-visible{outline:3px solid var(--ink);outline-offset:3px}
.btn .arw{transition:transform .4s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}

.btn--ghost{
  --bg:transparent;--fg:var(--ink);
  box-shadow:none;border:1px solid var(--line-2);
}
.btn--ghost::before{opacity:0}
.btn--ghost:hover{transform:translateY(-2px);box-shadow:var(--sh-2);background:var(--paper)}
.btn--lg{padding:18px 32px;font-size:17px}
.btn--block{width:100%;justify-content:center}

/* ---- Glass card ---- */
.glass{
  background:linear-gradient(180deg,rgba(255,255,255,.92),rgba(255,255,255,.78));
  border:1px solid rgba(255,255,255,.7);
  box-shadow:var(--sh-2);
  backdrop-filter:blur(14px) saturate(1.1);
  border-radius:var(--r-lg);
}

/* ---- Motion primitives (JS toggles .is-in) ---- */
[data-reveal]{opacity:0;transform:translateY(26px);
  transition:opacity .9s var(--ease-out),transform .9s var(--ease-out);
  transition-delay:calc(var(--i,0) * 80ms);will-change:transform,opacity}
[data-reveal="fade"]{transform:none}
[data-reveal="scale"]{transform:scale(.96)}
[data-reveal].is-in{opacity:1;transform:none}

.mask-line{display:block;overflow:hidden;padding-block:.04em}
.mask-line > span{display:block;transform:translateY(110%);
  transition:transform 1s var(--ease-out);transition-delay:calc(var(--i,0)*90ms)}
.mask-line.is-in > span{transform:translateY(0)}

@media (prefers-reduced-motion:reduce){
  [data-reveal],.mask-line>span{transition:none!important;opacity:1!important;transform:none!important}
}

/* ---- Focus + a11y ---- */
:focus-visible{outline:3px solid var(--red);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:12px 18px;z-index:200;border-radius:0 0 8px 0}
.skip:focus{left:0}

/* ---- Utility ---- */
.mono{font-family:var(--f-mono)}
.spec-num{font-family:var(--f-mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.divider{height:1px;background:var(--line);border:0;margin:0}
.hide-sm{display:initial}
@media (max-width:720px){.hide-sm{display:none}}