/* Kemudi — sistem desain bersama: kertas, tinta aspal, kuning marka jalan. */
:root {
  --paper: #f1ede4;
  --paper-2: #e7e1d4;
  --card: #f8f5ef;
  --ink: #15140f;
  --ink-2: #48453c;
  --muted: #7a756a;
  --line: rgba(21, 20, 15, 0.14);
  --signal: #ffc700;
  --signal-ink: #15140f;
  --stop: #e2432a;
  --go: #1f8a4c;
  --shadow: 0 1px 0 rgba(21, 20, 15, 0.06), 0 12px 32px -18px rgba(21, 20, 15, 0.35);
  --display: "Bricolage Grotesque", "Arial Narrow", system-ui, sans-serif;
  --text: "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --gutter: clamp(16px, 4vw, 40px);
  --max: 1240px;
  --radius: 18px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #11100d;
    --paper-2: #1b1a16;
    --card: #191814;
    --ink: #eeeae0;
    --ink-2: #c4bfb2;
    --muted: #8d887b;
    --line: rgba(238, 234, 224, 0.13);
    --stop: #ff6a50;
    --go: #4cc47f;
    --shadow: 0 1px 0 rgba(0, 0, 0, 0.3), 0 16px 40px -20px rgba(0, 0, 0, 0.8);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #11100d; --paper-2: #1b1a16; --card: #191814; --ink: #eeeae0; --ink-2: #c4bfb2;
  --muted: #8d887b; --line: rgba(238, 234, 224, 0.13); --stop: #ff6a50; --go: #4cc47f;
  --shadow: 0 1px 0 rgba(0, 0, 0, 0.3), 0 16px 40px -20px rgba(0, 0, 0, 0.8);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.55 var(--text);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
/* butiran kertas */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.07;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) body::before { mix-blend-mode: screen; opacity: 0.05; } }

a { color: inherit; }
img, svg { display: block; max-width: 100%; }
button, input, textarea { font: inherit; color: inherit; }
::selection { background: var(--signal); color: var(--signal-ink); }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 3px; border-radius: 6px; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.mono { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; }
.muted { color: var(--muted); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- navigasi ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; gap: 12px; height: 60px; }
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font: 700 22px/1 var(--display); font-variation-settings: "wdth" 80; letter-spacing: -0.02em;
  text-decoration: none; margin-right: auto;
}
.brand-mark {
  width: 26px; height: 26px; border-radius: 50%;
  border: 3px solid var(--ink); position: relative; flex: none;
}
.brand-mark::before, .brand-mark::after { content: ""; position: absolute; background: var(--ink); }
.brand-mark::before { left: 50%; top: 50%; width: 3px; height: 50%; transform: translateX(-50%); }
.brand-mark::after { left: 0; right: 0; top: 50%; height: 3px; transform: translateY(-50%); }
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  font: 500 14px/1 var(--text); text-decoration: none; padding: 10px 14px; border-radius: 999px; color: var(--ink-2);
}
.nav-links a:hover { background: var(--paper-2); color: var(--ink); }
.nav-links a[aria-current="page"] { background: var(--ink); color: var(--paper); }

/* ---------- tombol ---------- */
.btn {
  --bg: var(--ink); --fg: var(--paper);
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 22px; border-radius: 999px;
  background: var(--bg); color: var(--fg); border: 1.5px solid var(--bg);
  font: 600 16px/1 var(--text); text-decoration: none; cursor: pointer;
  transition: transform 0.2s cubic-bezier(.2, .8, .2, 1), background 0.2s, color 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(0.98); }
.btn:disabled { opacity: 0.4; cursor: default; transform: none; }
.btn.signal { --bg: var(--signal); --fg: var(--signal-ink); }
.btn.ghost { --bg: transparent; --fg: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--ink); }
.btn.sm { min-height: 38px; padding: 0 14px; font-size: 14px; }
.btn .arrow { transition: transform 0.25s; }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- marka jalan ---------- */
.lane {
  height: 4px;
  background: repeating-linear-gradient(90deg, var(--signal) 0 34px, transparent 34px 60px);
}
.lane.ink { background: repeating-linear-gradient(90deg, var(--ink) 0 34px, transparent 34px 60px); opacity: 0.2; }
.lane.moving { animation: lane 1.2s linear infinite; background-size: 60px 4px; }
@keyframes lane { to { background-position: -60px 0; } }

/* ---------- marquee kota ---------- */
.marquee { overflow: hidden; border-block: 1px solid var(--line); background: var(--ink); color: var(--paper); }
.marquee-track { display: flex; width: max-content; animation: marquee 32s linear infinite; }
.marquee span {
  font: 700 clamp(28px, 5vw, 56px)/1 var(--display); font-variation-settings: "wdth" 75;
  text-transform: uppercase; letter-spacing: -0.01em; padding: 18px 0; white-space: nowrap;
}
.marquee span::after { content: "→"; color: var(--signal); margin: 0 0.5em; font-variation-settings: "wdth" 100; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- tipografi besar ---------- */
.display {
  font-family: var(--display);
  font-weight: 700;
  font-variation-settings: "wdth" 78, "opsz" 96;
  letter-spacing: -0.035em;
  line-height: 0.9;
  margin: 0;
  text-wrap: balance;
}
.h2 {
  font: 700 clamp(34px, 6vw, 72px)/0.95 var(--display);
  font-variation-settings: "wdth" 80, "opsz" 96;
  letter-spacing: -0.03em; margin: 0; text-wrap: balance;
}
.h3 { font: 650 clamp(22px, 2.6vw, 30px)/1.1 var(--display); letter-spacing: -0.015em; margin: 0; text-wrap: balance; }
.lead { font-size: clamp(18px, 2vw, 22px); line-height: 1.5; color: var(--ink-2); max-width: 36em; text-wrap: pretty; }
.hl { background: var(--signal); color: var(--signal-ink); padding: 0 0.2em; border-radius: 4px; -webkit-box-decoration-break: clone; box-decoration-break: clone; }

/* ---------- bagian ---------- */
.section { padding: clamp(64px, 10vw, 140px) 0; }
.section + .section { border-top: 1px solid var(--line); }
.km {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted);
}
.km b {
  display: inline-grid; place-items: center; min-width: 46px; height: 26px; padding: 0 8px;
  background: var(--signal); color: var(--signal-ink); border-radius: 4px; font-weight: 500; letter-spacing: 0.04em;
}

/* ---------- kartu ---------- */
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
}

/* ---------- reveal saat scroll ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.8s cubic-bezier(.2, .8, .2, 1), transform 0.8s cubic-bezier(.2, .8, .2, 1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- toast pilihan suara ---------- */
.toast {
  position: fixed; left: 50%; bottom: max(16px, env(safe-area-inset-bottom)); z-index: 90;
  transform: translateX(-50%); width: min(520px, calc(100% - 32px));
  background: #15140f; color: #f1ede4; border-radius: 20px; padding: 18px; /* selalu gelap di kedua tema */
  box-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.6); border: 1px solid rgba(255, 255, 255, 0.14);
  animation: toast 0.35s cubic-bezier(.2, .8, .2, 1);
}
.toast p { margin: 0 0 14px; font-size: 15px; line-height: 1.45; }
.toast p b { color: var(--signal); }
.toast .row { display: flex; gap: 8px; flex-wrap: wrap; }
.toast .btn.ghost { --fg: #f1ede4; border-color: rgba(255, 255, 255, 0.25); }
.toast .btn.signal { --fg: #15140f; }
.toast .bar { height: 6px; border-radius: 99px; background: rgba(255, 255, 255, 0.15); overflow: hidden; margin-top: 4px; }
.toast .bar i { display: block; height: 100%; width: 0; background: var(--signal); transition: width 0.2s; }
@keyframes toast { from { opacity: 0; transform: translate(-50%, 20px); } }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); padding: 40px 0 56px; color: var(--muted); font-size: 14px; }
.foot .wrap { display: flex; flex-wrap: wrap; gap: 16px 40px; justify-content: space-between; }
.foot p { margin: 0; max-width: 46em; }