:root {
  --bg: #070c14;
  --bg2: #0b1220;
  --panel: #101b2d;
  --panel2: #16233a;
  --line: #22344f;
  --text: #dce6f2;
  --dim: #7c8ca6;
  --dim2: #4c5b73;
  --acc: #22d3ee;
  --accd: #0e7490;
  --amber: #f59e0b;
  --red: #ef4444;
  --green: #22c55e;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); }
body {
  font-family: "Barlow Condensed", "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.5;
  min-height: 100vh;
}
h1, h2, h3, .brand, .nav a, .btn, .tab {
  font-family: "Chakra Petch", "Barlow Condensed", sans-serif;
  letter-spacing: 0.03em;
}
a { color: var(--acc); text-decoration: none; }
a:hover { color: #67e8f9; }
code { font-family: ui-monospace, monospace; font-size: 0.92em; color: var(--amber); }

.nav {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 16px;
  padding: 12px 22px;
  background: rgba(7, 12, 20, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 17px; }
.brand img, .brand svg { width: 32px; height: 32px; }
.nav-links { display: flex; gap: 16px; margin-left: auto; flex-wrap: wrap; }
.nav a { color: var(--dim); font-size: 13px; font-weight: 600; text-transform: uppercase; }
.nav a:hover, .nav a.on { color: var(--acc); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid var(--line); background: var(--panel); color: var(--text);
  padding: 10px 18px; border-radius: 10px; font-weight: 600; font-size: 14px;
  text-transform: uppercase; cursor: pointer;
}
.btn:hover { border-color: var(--acc); color: var(--acc); }
.btn-utama { background: var(--accd); border-color: var(--acc); color: #041016; }
.btn-utama:hover { background: var(--acc); color: #041016; }
.btn-amber { background: #7c4a06; border-color: var(--amber); color: #fff7ed; }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }

.wrap { width: min(1080px, calc(100% - 36px)); margin: 0 auto; }
.hero {
  position: relative; min-height: 70vh; display: grid; place-items: center;
  overflow: hidden; border-bottom: 1px solid var(--line);
}
.hero img.bg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; opacity: 0.42;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(7,12,20,.15) 0%, rgba(7,12,20,.88) 76%, var(--bg) 100%);
}
.hero-inner { position: relative; z-index: 2; text-align: center; padding: 76px 20px 52px; }
.kicker { color: var(--acc); font-weight: 600; letter-spacing: 0.26em; font-size: 12px; text-transform: uppercase; }
.hero h1 { font-size: clamp(40px, 8vw, 84px); margin: 10px 0 8px; line-height: 0.95; }
.hero p.lead { color: var(--dim); max-width: 540px; margin: 12px auto 28px; font-size: 20px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.meta { margin-top: 16px; color: var(--dim2); font-size: 13px; }

.grid-3, .grid-2 { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: 1fr 1fr; }
@media (max-width: 860px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .nav-links { gap: 10px; }
  .nav .btn { display: none; }
}

.sec { padding: 56px 0; }
.sec h2 { font-size: 28px; margin: 0 0 8px; }
.sec .sub { color: var(--dim); margin: 0 0 24px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--dim); }
.num { color: var(--acc); font-weight: 700; font-size: 12px; letter-spacing: 0.16em; }

.dl-box {
  display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  padding: 28px; border: 1px solid var(--line); border-radius: 16px;
  background: linear-gradient(180deg, var(--panel2), var(--panel));
}
.foot {
  border-top: 1px solid var(--line); padding: 24px 0 40px; color: var(--dim2); font-size: 13px;
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}

/* changelog */
.ver { border-left: 3px solid var(--acc); padding: 4px 0 8px 20px; margin: 0 0 32px; }
.ver.fix { border-color: var(--amber); }
.ver h3 { margin: 0 0 4px; font-size: 20px; }
.when { color: var(--dim2); font-size: 13px; margin-bottom: 10px; }
.ver ul { margin: 0; padding-left: 18px; color: var(--dim); }
.ver li { margin: 6px 0; }

/* license */
.lic table { width: 100%; border-collapse: collapse; font-size: 15px; }
.lic th, .lic td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.lic th { color: var(--acc); font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; }
.lic h3 { margin: 28px 0 8px; }

/* studio */
.studio { display: grid; grid-template-columns: 230px 1fr 300px; min-height: calc(100vh - 58px); }
.side, .rail { background: var(--bg2); padding: 16px; }
.side { border-right: 1px solid var(--line); }
.rail { border-left: 1px solid var(--line); overflow: auto; }
.stage { padding: 12px; display: flex; flex-direction: column; gap: 10px; min-width: 0; background: #05080e; }
.tabs { display: flex; gap: 6px; }
.tab {
  flex: 1; text-align: center; padding: 8px 6px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--panel); color: var(--dim);
  cursor: pointer; font-weight: 600; font-size: 12px; text-transform: uppercase;
}
.tab.on { color: #041016; background: var(--acc); border-color: var(--acc); }
label { display: block; font-size: 11px; color: var(--dim); margin: 10px 0 4px; text-transform: uppercase; letter-spacing: 0.08em; }
input[type=text], input[type=email], input[type=range], select {
  width: 100%; background: var(--bg); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; font: inherit;
}
.swatches { display: flex; flex-wrap: wrap; gap: 6px; }
.swatch { width: 28px; height: 28px; border-radius: 50%; border: 2px solid transparent; cursor: pointer; box-shadow: inset 0 -6px 8px rgba(0,0,0,.35); }
.swatch.on { border-color: #fff; transform: scale(1.08); }
.tools { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }
canvas.board {
  width: 100%; height: auto; background: #070b12;
  border: 1px solid var(--line); border-radius: 12px; touch-action: none; cursor: crosshair;
}
.hint { color: var(--dim); font-size: 13px; }
.stat { font-size: 12px; color: var(--dim); }
.toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%);
  background: var(--panel2); border: 1px solid var(--acc); color: var(--text);
  padding: 10px 16px; border-radius: 999px; display: none; z-index: 50;
}
@media (max-width: 980px) {
  .studio { grid-template-columns: 1fr; }
  .side, .rail { border: 0; border-top: 1px solid var(--line); }
}