/* base.css — reset, tipografi dasar, utilitas. */
* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Atribut `hidden` harus menang atas `display:flex/grid` milik komponen.
   Tanpa aturan ini, `.viz-card { display: flex }` membuat elemen ber-`hidden`
   tetap tampil — kartu kosong berisi judul dan garis saja. */
[hidden] { display: none !important; }
.hidden { display: none !important; }

@keyframes rise {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

body { font-family: var(--font-body); font-size: 14.5px; }
button, input, select, textarea { font-family: inherit; }
h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: -0.02em; }
::selection { background: rgba(37,137,232,0.28); }
:focus-visible { outline: none; box-shadow: var(--ring); }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--surface3); border-radius: 999px; border: 2px solid transparent; background-clip: content-box; }
*::-webkit-scrollbar-thumb:hover { background: var(--line-strong); background-clip: content-box; }

/* Skip link: tidak terlihat sampai difokuskan keyboard. Diletakkan di atas
   segalanya (z-index) karena sidebar bisa fixed dan menutupi area fokus. */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-ink);
  background: var(--accent-fill);
  border-radius: 8px;
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform 120ms ease;
}
.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}