/* ============================================================
   TRANOVA — LAYOUT
   Section rhythm follows the approved "color as section
   language": dark → light → grey → black → dark green →
   grey → white → full teal → black footer.
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  position: relative;
  padding-block: var(--section-pad);
}

/* ---------- section color language ---------- */
/* ---------- BAHASA PERMUKAAN — semua TERANG (ketetapan C1 21 Agu) ----------
   Nama kelas dipertahankan supaya markup tidak perlu diubah massal, tapi
   nilainya kini permukaan terang dari Design System v2.1. Urutannya diatur
   agar tiap seksi berselang-seling: kertas -> putih -> kertas dalam.       */
.bg-black { background: var(--bg-inset);  color: var(--tx); }  /* kertas dalam #E8E3DD */
.bg-white { background: var(--bg-raised); color: var(--tx); }  /* putih #FFFFFF        */
.bg-grey  { background: var(--bg-page);   color: var(--tx); }  /* kertas #F4F1EC       */
.bg-dark  { background: var(--bg-raised); color: var(--tx); }  /* putih                */
.bg-teal  { background: var(--bg-brand);  color: var(--tx-on-brand); } /* #06A089 + teks HITAM (DS §2.3) */

/* ---------- shared type patterns ---------- */
.label {
  font-family: var(--font-sans);
  font-size: var(--fs-label);
  font-weight: 400;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
}

.title-h2 {
  font-family: var(--font-sans);
  font-size: var(--fs-h2);
  font-weight: 700;
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-tight);
}

h1, h2, h3 {
  text-wrap: balance;
}

.serif-lead {
  font-family: var(--font-serif);
  font-size: var(--fs-body-lg);
  line-height: 1.7;
}

.text-gradient {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- placeholder shells (built out in later phases) ---------- */
.shell {
  min-height: 46vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.shell .container {
  position: relative;
  z-index: var(--z-content);
}

.shell__phase {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  border: 1px solid currentColor;
  border-radius: var(--r-pill);
  opacity: 0.55;
  margin-bottom: var(--sp-5);
}

.shell__title {
  font-size: var(--fs-h2);
  font-weight: 700;
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-tight);
  text-transform: uppercase;
  margin-bottom: var(--sp-4);
}

.shell__desc {
  font-family: var(--font-serif);
  font-size: var(--fs-body-lg);
  max-width: 46ch;
  opacity: 0.75;
}

.shell__index {
  position: absolute;
  right: var(--container-pad);
  top: 50%;
  transform: translateY(-50%);
  font-size: clamp(6rem, 16vw, 12rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: var(--ls-tight);
  opacity: 0.07;
  pointer-events: none;
  user-select: none;
}