/* ==========================================================================
   base.css — Reset, elemen dasar, layout helper (container & grid)
   ========================================================================== */

*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--c-text);
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--transition);

  /* Background bertema + pola titik halus, biar konten tidak putih polos */
  background-color: var(--c-bg);
  background-image:
    radial-gradient(color-mix(in srgb, var(--c-primary) 14%, transparent) 1.5px, transparent 1.6px),
    linear-gradient(180deg, color-mix(in srgb, var(--c-primary) 6%, transparent) 0%, transparent 480px);
  background-size: 26px 26px, 100% 100%;
  background-position: 0 0, 0 0;
  background-repeat: repeat, no-repeat;
}

img,
picture,
svg { display: block; max-width: 100%; }

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--c-primary-dark); }

ul { list-style: none; padding: 0; }

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  color: var(--c-heading);
  line-height: var(--lh-tight);
  font-weight: var(--fw-bold);
}

h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); }

p { color: var(--c-text); }

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

/* Padding container naik bertahap seiring lebar layar, biar konten nggak
   mepet ke tepi di layar tablet/laptop (sebelumnya fixed 16px di semua ukuran). */
@media (min-width: 481px) { .container { padding-inline: var(--space-5); } }
@media (min-width: 769px) { .container { padding-inline: var(--space-6); } }
@media (min-width: 1200px) { .container { padding-inline: var(--space-7); } }

.grid { display: grid; gap: var(--space-5); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* Kolom konten + sidebar */
.grid--content {
  grid-template-columns: 2fr 1fr;
  align-items: start;
}

/* Varian: sidebar (kolom pertama) di kiri, konten utama (lebih lebar) di kanan */
.grid--content-rev {
  grid-template-columns: 1fr 2fr;
}

/* --- Utilitas --- */
.text-center { text-align: center; }
.text-muted { color: var(--c-text-muted); }
.mt-0 { margin-top: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

/* --- Responsif: layout --- */
@media (max-width: 992px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--content,
  .grid--content-rev { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  h1 { font-size: var(--fs-2xl); }
  h2 { font-size: var(--fs-xl); }
  .grid--2,
  .grid--3 { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .grid--4 { grid-template-columns: 1fr; }
}