/* =========================================================================
   Suikodev — Indeks Produk AI
   Monokrom editorial. Hitam-putih sebagai prinsip, hierarki lewat skala
   dan bobot. Warna sengaja absen.
   ========================================================================= */

/* ---- Tokens ------------------------------------------------------------- */
:root {
  /* Monochrome ramp (OKLCH, chroma 0) */
  --bg:           oklch(1 0 0);
  --ink:          oklch(0.18 0 0);   /* body text        ~12:1 vs bg */
  --ink-strong:   oklch(0.12 0 0);   /* headings         ~16:1 vs bg */
  --muted:        oklch(0.46 0 0);   /* secondary text   ~4.7:1 vs bg */
  --number:       oklch(0.40 0 0);   /* index numerals   ~5.7:1 vs bg */
  --line:         oklch(0.88 0 0);   /* hairline rules */
  --line-strong:  oklch(0.72 0 0);   /* ledger frame, tag borders */

  /* Inverted (hover / pressed) reads of the same two values */
  --bg-on-ink:        oklch(1 0 0);
  --muted-on-ink:     oklch(0.74 0 0);
  --line-on-ink:      oklch(0.42 0 0);

  /* Type */
  --font-display: "Bodoni Moda", Georgia, "Times New Roman", serif;
  --font-sans:    "Archivo", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Spacing scale (4pt base) — compact directory density */
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --gutter: clamp(1.1rem, 4vw, 3rem);
  --shell:  66rem;

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);   /* ease-out-expo-ish */
  --dur:     0.28s;

  /* Z-scale */
  --z-skip: 100;

  color-scheme: light;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.6;
  font-feature-settings: "kern" 1, "liga" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

h1, p, ol, ul { margin: 0; }
ol.index { list-style: none; padding: 0; }

svg { display: block; }

::selection { background: var(--ink); color: var(--bg); }

/* ---- Skip link ---------------------------------------------------------- */
.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: var(--z-skip);
  padding: 0.6rem 1rem;
  background: var(--ink-strong);
  color: var(--bg);
  font-size: 0.85rem;
  letter-spacing: 0.01em;
  transform: translateY(-160%);
  transition: transform var(--dur) var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }

/* ---- Shell -------------------------------------------------------------- */
.page {
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  flex-direction: column;
}

/* ---- Masthead ----------------------------------------------------------- */
.masthead {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-1) var(--s-5);
  padding-block: clamp(0.8rem, 2vw, 1.05rem);
  border-bottom: 1px solid var(--line);
}

.masthead__wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2rem);
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--ink-strong);
}

.masthead__meta {
  display: inline-flex;
  align-items: center;
  gap: 0.6ch;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.masthead__sep { color: var(--line-strong); }

/* ---- Main --------------------------------------------------------------- */
.main { flex: 1; }

/* ---- Intro -------------------------------------------------------------- */
.intro {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-2) var(--s-6);
  padding-block: clamp(1.4rem, 4vw, 2.25rem) clamp(1rem, 2.5vw, 1.4rem);
}

.intro__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.85rem, 1.25rem + 2.2vw, 2.7rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink-strong);
  text-wrap: balance;
  max-width: 18ch;
}

.intro__lead {
  max-width: 30ch;
  font-size: clamp(0.95rem, 0.92rem + 0.2vw, 1.05rem);
  line-height: 1.45;
  color: var(--muted);
  text-wrap: pretty;
}

/* ---- Filters ------------------------------------------------------------ */
/* Disembunyikan saat JS belum/ tidak aktif; produk tetap tampil seluruhnya. */
.filters {
  display: none;
  flex-wrap: wrap;
  gap: var(--s-2);
  padding-bottom: clamp(0.85rem, 2vw, 1.15rem);
}
.filters.is-ready { display: flex; }

.chip {
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  border: 1px solid var(--line-strong);
  background: var(--bg);
  color: var(--ink);
  padding: 0.32rem 0.7rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  line-height: 1;
  transition:
    background-color var(--dur) var(--ease-out),
    color var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out);
}
.chip:hover { border-color: var(--ink); }
.chip[aria-pressed="true"] {
  background: var(--ink-strong);
  border-color: var(--ink-strong);
  color: var(--bg);
}
.chip__count {
  opacity: 0.55;
  margin-left: 0.5ch;
}

/* ---- Ledger frame ------------------------------------------------------- */
.ledger {
  --cols: 2.75rem minmax(0, 1fr) 12rem 2.25rem;
  border-top: 1.5px solid var(--ink-strong);
}

.ledger__head {
  display: grid;
  grid-template-columns: var(--cols);
  gap: var(--s-4);
  align-items: end;
  padding: 0.5rem 0 0.55rem;
  border-bottom: 1px solid var(--line);
}
.ledger__col {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.ledger__col--cat { text-align: left; }

/* ---- Index entries ------------------------------------------------------ */
.index { border-bottom: 1.5px solid var(--ink-strong); }

.entry { border-top: 1px solid var(--line); }
.entry:first-child { border-top: 0; }
.entry[hidden] { display: none; }

.entry__link {
  display: grid;
  grid-template-columns: var(--cols);
  gap: var(--s-4);
  align-items: center;
  padding: clamp(0.7rem, 1.5vw, 0.95rem) 0.8rem;
  margin-inline: -0.8rem;
  position: relative;
  transition:
    background-color var(--dur) var(--ease-out),
    color var(--dur) var(--ease-out);
}

.entry__no {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--number);
  letter-spacing: 0.02em;
  transition: color var(--dur) var(--ease-out);
}

.entry__body { min-width: 0; }

.entry__name {
  display: block;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.2rem, 1rem + 0.95vw, 1.65rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink-strong);
  transition: color var(--dur) var(--ease-out);
}

.entry__desc {
  display: block;
  margin-top: 0.15rem;
  max-width: 56ch;
  font-size: 0.95rem;
  line-height: 1.4;
  color: var(--muted);
  transition: color var(--dur) var(--ease-out);
}

.entry__domain {
  display: block;
  margin-top: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.01em;
  color: var(--number);
  transition: color var(--dur) var(--ease-out);
}

.entry__cat {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-content: center;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.02em;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink);
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}

.entry__go {
  display: grid;
  place-items: center;
  color: var(--number);
  transition: color var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}

/* Hover / focus: invert the whole row */
.entry__link:hover,
.entry__link:focus-visible {
  background: var(--ink-strong);
  outline: none;
}
.entry__link:hover .entry__name,
.entry__link:focus-visible .entry__name,
.entry__link:hover .entry__no,
.entry__link:focus-visible .entry__no { color: var(--bg-on-ink); }

.entry__link:hover .entry__desc,
.entry__link:focus-visible .entry__desc,
.entry__link:hover .entry__domain,
.entry__link:focus-visible .entry__domain { color: var(--muted-on-ink); }

.entry__link:hover .tag,
.entry__link:focus-visible .tag {
  color: var(--bg-on-ink);
  border-color: var(--line-on-ink);
}

.entry__link:hover .entry__go,
.entry__link:focus-visible .entry__go {
  color: var(--bg-on-ink);
  transform: translate(3px, -3px);
}

/* Clear keyboard affordance distinct from hover */
.entry__link:focus-visible {
  outline: 2px solid var(--ink-strong);
  outline-offset: 3px;
}

/* ---- Empty state -------------------------------------------------------- */
.empty {
  padding: clamp(2.5rem, 6vw, 4rem) 1rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* ---- Footer ------------------------------------------------------------- */
.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--s-1) var(--s-5);
  padding-block: clamp(0.9rem, 2vw, 1.25rem);
  margin-top: clamp(1.1rem, 3vw, 1.75rem);
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}
.footer__count strong { color: var(--ink); font-weight: 500; }

/* ---- Responsive: stack the ledger on small screens --------------------- */
@media (max-width: 40rem) {
  .ledger { --cols: 1fr; }
  .ledger__head { display: none; }

  .entry__link {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "no   go"
      "body body"
      "cat  cat";
    gap: 0.25rem 1rem;
    align-items: start;
    padding-block: 0.95rem;
  }
  .entry__no  { grid-area: no; align-self: center; }
  .entry__go  { grid-area: go; align-self: center; }
  .entry__body { grid-area: body; }
  .entry__cat {
    grid-area: cat;
    margin-top: 0.4rem;
  }
}

/* ---- Reduced motion ----------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .entry__link:hover .entry__go,
  .entry__link:focus-visible .entry__go { transform: none; }
}