/* ==========================================================================
   BASE: reset, tipografi, chrome, nav, strip. Dipakai semua skin.
   ========================================================================== */

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.2; }
h1 { font-family: var(--font-display); font-size: 30px; letter-spacing: -.015em; }
h2 { font-family: var(--font-display); font-size: 21px; }
h3 { font-size: 15px; }
p { margin: 0 0 10px; }
a { color: var(--acc); text-decoration: none; }
a:hover { text-decoration: underline; }

code, .mono, time, .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .92em;
}

.muted { color: var(--ink-3); }
.dim { color: var(--ink-2); }
.small { font-size: 12.5px; }
.tiny { font-size: 11px; letter-spacing: .06em; text-transform: uppercase; }
.nowrap { white-space: nowrap; }
.right { text-align: right; }
.center { text-align: center; }
.hide { display: none !important; }

:focus-visible { outline: none; box-shadow: var(--ring); border-radius: var(--radius-sm); }

/* ---------------------------------------------------------------- SKIP LINK */
.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--acc); color: var(--paper); padding: 10px 16px;
  font-family: var(--font-mono); font-size: 12px;
}
.skip:focus { left: 8px; top: 8px; }

/* ------------------------------------------------------------------- SHELL */
.shell { max-width: var(--maxw); margin: 0 auto; padding: 0 20px 60px; }

/* ------------------------------------------------------------------- MASTHEAD */
.masthead {
  border-bottom: var(--rule-w) solid var(--rule-2);
  background: var(--paper);
  position: sticky; top: 0; z-index: 40;
}
.masthead-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; gap: 18px; min-height: 58px;
}

.brand { display: flex; align-items: baseline; gap: 9px; text-decoration: none; }
.brand-mark {
  font-size: 21px; color: var(--ink); letter-spacing: -.01em;
}
.brand-sub {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--ink-3);
}

/* ---------------------------------------------------------------------- NAV */
.nav { display: flex; align-items: stretch; gap: 2px; margin-left: 8px; flex-wrap: wrap; }
.nav-link {
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .07em;
  text-transform: uppercase; color: var(--ink-3); text-decoration: none;
  padding: 8px 10px; border-bottom: 2px solid transparent; white-space: nowrap;
}
.nav-link:hover { color: var(--ink); text-decoration: none; }
.nav-link[aria-current="page"] { color: var(--ink); border-bottom-color: var(--acc); }

.nav-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }

/* ------------------------------------------------------------------- STRIP */
.sys-strip {
  border-bottom: var(--rule-w) solid var(--rule);
  background: var(--paper-2);
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .05em;
  text-transform: uppercase; color: var(--ink-2);
}
.sys-strip-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 6px 20px;
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
}
.sys-item { display: inline-flex; align-items: center; gap: 6px; }
.sys-val { color: var(--ink); }
.sys-sep { color: var(--rule-2); }

/* ------------------------------------------------------------------ BUTTON */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .06em;
  text-transform: uppercase; padding: 8px 13px; border-radius: var(--radius-sm);
  border: 1px solid var(--rule-2); background: var(--card); color: var(--ink);
  cursor: pointer; text-decoration: none; line-height: 1.2;
  transition: background .12s ease, border-color .12s ease, color .12s ease;
}
.btn:hover { border-color: var(--acc); color: var(--acc); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--acc); border-color: var(--acc); color: var(--paper); }
.btn-primary:hover { filter: brightness(1.08); color: var(--paper); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--ink-3); }
.btn-ghost:hover { color: var(--ink); border-color: var(--rule-2); }
.btn-danger { border-color: var(--crit); color: var(--crit); background: transparent; }
.btn-danger:hover { background: var(--crit); color: var(--paper); border-color: var(--crit); }
.btn-sm { padding: 5px 9px; font-size: 10.5px; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }

/* --------------------------------------------------------------- SEGMENTED */
.seg { display: inline-flex; border: 1px solid var(--rule-2); border-radius: var(--radius-sm); overflow: hidden; }
.seg button, .seg a {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .06em;
  text-transform: uppercase; padding: 6px 10px; background: transparent;
  border: 0; border-right: 1px solid var(--rule-2); color: var(--ink-3);
  cursor: pointer; text-decoration: none;
}
.seg > :last-child { border-right: 0; }
.seg .is-on { background: var(--acc); color: var(--paper); }
.seg button:hover:not(.is-on), .seg a:hover:not(.is-on) { color: var(--ink); text-decoration: none; }

/* -------------------------------------------------------------------- FORM */
label { display: block; font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: .07em; text-transform: uppercase; color: var(--ink-3);
  margin-bottom: 5px; }
input[type="text"], input[type="url"], input[type="number"], input[type="search"],
input[type="date"], select, textarea {
  width: 100%; font-family: var(--font-ui); font-size: 14px; color: var(--ink);
  background: var(--card); border: 1px solid var(--rule-2);
  border-radius: var(--radius-sm); padding: 8px 10px;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--acc);
  box-shadow: var(--ring); }
textarea { resize: vertical; min-height: 74px; line-height: 1.45; }
.field { margin-bottom: 12px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.hint { font-size: 11.5px; color: var(--ink-3); margin-top: 4px; }

/* ------------------------------------------------------------------ FOOTER */
.foot {
  border-top: var(--rule-w) solid var(--rule); margin-top: 34px;
  padding-top: 14px; font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3);
  display: flex; gap: 14px; flex-wrap: wrap;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}