/* ===== PPID Docs — Dark Gradient Design System ===== */
:root{
  --bg-0:#070b16; --bg-1:#0b1120; --bg-2:#0f1a30; --bg-3:#13233f;
  --panel:rgba(20,32,54,.55); --panel-solid:#111d33; --panel-brd:rgba(120,150,200,.14);
  --panel-brd-hi:rgba(130,180,240,.30);
  --ink:#eaf1fb; --ink-soft:#a9bad3; --ink-faint:#6f83a3; --ink-dim:#546789;
  --cyan:#22d3ee; --cyan-2:#38bdf8; --cyan-ink:#7ee7fb;
  --violet:#8b5cf6; --violet-2:#a78bfa;
  --emerald:#34d399; --amber:#fbbf24; --rose:#fb7185; --orange:#fb923c;
  --n1:#fb923c; --o1:#38bdf8; /* kardinalitas */
  --glow-cyan:0 0 0 1px rgba(56,189,248,.25), 0 8px 30px -8px rgba(34,211,238,.45);
  --glow-violet:0 0 0 1px rgba(139,92,246,.25), 0 8px 30px -8px rgba(139,92,246,.45);
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 12px 40px -12px rgba(0,0,0,.6);
  --shadow-lg:0 2px 8px rgba(0,0,0,.5), 0 30px 60px -20px rgba(0,0,0,.75);
  --radius:16px; --radius-sm:11px;
  --mono:ui-monospace,"Cascadia Code","Cascadia Mono","JetBrains Mono","Consolas","Roboto Mono",monospace;
  --sans:"Segoe UI",system-ui,-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;background:var(--bg-0)}
body{
  margin:0;color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  background-color:var(--bg-0);
  background-image:
    radial-gradient(1200px 700px at 12% -8%, rgba(56,189,248,.16), transparent 60%),
    radial-gradient(1000px 620px at 92% 4%, rgba(139,92,246,.16), transparent 58%),
    radial-gradient(900px 700px at 60% 108%, rgba(34,211,238,.10), transparent 60%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1) 40%, var(--bg-0));
  background-attachment:fixed;min-height:100vh;
}
/* subtle grid overlay */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(120,150,200,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,150,200,.05) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(circle at 50% 20%, #000 0%, transparent 75%);
}
.mono{font-family:var(--mono)}
a{color:var(--cyan-ink);text-decoration:none}
::selection{background:rgba(56,189,248,.3);color:#fff}
.wrap{max-width:1360px;margin:0 auto;padding:0 clamp(16px,3.5vw,40px);position:relative;z-index:1}

/* scrollbar */
*::-webkit-scrollbar{width:11px;height:11px}
*::-webkit-scrollbar-track{background:transparent}
*::-webkit-scrollbar-thumb{background:linear-gradient(var(--cyan),var(--violet));border-radius:20px;border:3px solid var(--bg-0)}

/* ===== top nav (shared) ===== */
.topbar{position:sticky;top:0;z-index:80;backdrop-filter:blur(14px) saturate(140%);
  background:linear-gradient(180deg,rgba(9,14,26,.9),rgba(9,14,26,.6));
  border-bottom:1px solid var(--panel-brd)}
.topbar-in{display:flex;align-items:center;gap:22px;padding:13px 0;flex-wrap:wrap}
.brand-logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand-mark{width:38px;height:38px;border-radius:11px;flex:none;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--cyan),var(--violet));box-shadow:var(--glow-cyan);
  font-weight:900;color:#06121f;font-size:17px;letter-spacing:-1px}
.brand-txt{display:flex;flex-direction:column;line-height:1.05}
.brand-txt b{font-size:16px;font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.brand-txt span{font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);font-weight:700}
.topnav{margin-left:auto;display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.topnav a{padding:8px 15px;border-radius:10px;font-size:13.5px;font-weight:600;color:var(--ink-soft);
  border:1px solid transparent;transition:all .16s;display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
.topnav a:hover{color:var(--ink);background:var(--panel);border-color:var(--panel-brd)}
.topnav a.active{color:var(--cyan-ink);background:rgba(34,211,238,.1);border-color:rgba(56,189,248,.3)}
.topnav a.ext::after{content:"↗";font-size:11px;opacity:.7}
.topnav a.cta{background:linear-gradient(135deg,var(--cyan),var(--cyan-2));color:#06121f;font-weight:800;border:0}
.topnav a.cta:hover{filter:brightness(1.08);box-shadow:var(--glow-cyan)}

/* ===== panels / cards ===== */
.glass{background:var(--panel);border:1px solid var(--panel-brd);border-radius:var(--radius);
  backdrop-filter:blur(10px);box-shadow:var(--shadow)}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:700;letter-spacing:.03em;
  padding:4px 10px;border-radius:20px;border:1px solid var(--panel-brd);color:var(--ink-soft);background:rgba(255,255,255,.03)}
.eyebrow{font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;font-weight:800;
  background:linear-gradient(90deg,var(--cyan-ink),var(--violet-2));-webkit-background-clip:text;background-clip:text;color:transparent}

/* pills kardinalitas */
.card-pill{font-size:10px;font-weight:800;letter-spacing:.03em;border-radius:6px;padding:3px 8px;white-space:nowrap;font-family:var(--mono)}
.card-pill.n1{background:rgba(251,146,60,.14);color:var(--n1);border:1px solid rgba(251,146,60,.4)}
.card-pill.o1{background:rgba(56,189,248,.14);color:var(--o1);border:1px solid rgba(56,189,248,.4)}
.vtag{font-size:9px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;color:var(--emerald);
  border:1px solid rgba(52,211,153,.45);background:rgba(52,211,153,.1);border-radius:5px;padding:2px 6px}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:12px;font-weight:700;font-size:14px;
  cursor:pointer;border:1px solid var(--panel-brd);background:var(--panel);color:var(--ink);transition:all .16s;font-family:inherit}
.btn:hover{border-color:var(--panel-brd-hi);transform:translateY(-1px)}
.btn-primary{background:linear-gradient(135deg,var(--cyan),var(--cyan-2));color:#06121f;border:0;font-weight:800}
.btn-primary:hover{box-shadow:var(--glow-cyan);filter:brightness(1.06)}
.btn-ghost{background:transparent}

footer.site{border-top:1px solid var(--panel-brd);margin-top:60px;padding:28px 0 46px;color:var(--ink-faint);font-size:13px}
.footer-in{display:flex;gap:20px;flex-wrap:wrap;align-items:center;justify-content:space-between}
footer.site b{color:var(--ink-soft)}

@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
:focus-visible{outline:2px solid var(--cyan-2);outline-offset:2px;border-radius:8px}