/* ==========================================================
   Akitao99 - public site styles
   1. Base          5. Product cards     9. Custom System page
   2. Navigation    6. Docs viewer       10. Bug report dialog
   3. Buttons       7. Patch notes
   4. Home / hero   8. Footer, icons, tags
   ========================================================== */

:root {
  --bg: #101014;
  --card: #1b1c22;
  --text: #f3f4f7;
  --mute: #a3a7b3;
  --line: #2a2c35;
  --acc: #26bbff;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", "Hiragino Sans", Roboto, sans-serif;
}
a { color: inherit; }
button, select { font: inherit; color: var(--text); cursor: pointer; }
main { flex: 1; width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 20px 40px; }
.sp { flex: 1; }

nav {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 6px;
  min-height: 58px;
  padding: env(safe-area-inset-top, 0px) 20px 0;
  background: rgba(0, 0, 0, .62);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.brand { margin-inline-end: 8px; font-size: 20px; font-weight: 800; letter-spacing: .02em; text-decoration: none; }
.nl { padding: 6px 10px; border-radius: 8px; color: var(--mute); font-size: 14px; text-decoration: none; }
.nl:hover { background: rgba(255, 255, 255, .08); color: #fff; }
.nl.ic { padding: 6px; }
#lang, #vlang {
  padding: 6px 8px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 9px;
  font-size: 14px;
}
#lang option, #vlang option { background: var(--card); }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--line);
  border-radius: 9px;
  font-size: 14px;
  text-decoration: none;
}
.btn:hover { background: rgba(255, 255, 255, .14); }
.btn.fab { background: var(--acc); border-color: var(--acc); color: #04202e; font-weight: 700; }
.btn.fab:hover { filter: brightness(1.1); }

.hero { padding: 64px 0 16px; }
.hero p { max-width: 60ch; margin: 0; color: var(--mute); font-size: 18px; }
h1 { max-width: 820px; margin: 0 0 12px; font-size: clamp(32px, 6vw, 56px); line-height: 1.1; letter-spacing: -.03em; }
h2.sec { margin: 40px 0 16px; font-size: 22px; }
.grid { display: grid; gap: 18px; }
.grid.big { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.grid.sm  { grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }

.card {
  display: flex; flex-direction: column;
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: transform .2s, border-color .2s;
}
.card:hover { transform: translateY(-4px); border-color: #3b3e4a; }
.thumb {
  position: relative; overflow: hidden;
  display: grid; place-items: center;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #2b2f6b, #0f6b8c);
  color: rgba(255, 255, 255, .55);
  font-size: 48px; font-weight: 800;
  cursor: pointer;
}
.thumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.badge {
  position: absolute; top: 10px; inset-inline-start: 10px; z-index: 1;
  padding: 3px 9px;
  background: var(--acc); color: #04202e;
  border-radius: 99px;
  font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase;
}
.cb { display: flex; flex: 1; flex-direction: column; gap: 8px; padding: 14px 16px 16px; }
.nm { display: flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 700; cursor: pointer; }
.nm img, .si img { flex: none; width: 30px; height: 30px; border-radius: 8px; object-fit: cover; }
.ds { flex: 1; color: var(--mute); font-size: 14px; }
.sm .ds { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.chip { color: var(--mute); font-size: 12px; }
.acts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }


.tg { display: flex; flex-wrap: wrap; gap: 6px; }
.tg span { padding: 2px 9px; background: rgba(255, 255, 255, .1); border-radius: 99px; color: var(--mute); font-size: 11px; font-weight: 700; }
.tg span[data-t="blueprint"] { background: rgba(38, 187, 255, .16); color: #26bbff; }
.tg span[data-t="c++"]       { background: rgba(167, 139, 250, .18); color: #a78bfa; }


#viewer { display: none; position: fixed; inset: 0; z-index: 30; padding-top: env(safe-area-inset-top, 0px); background: var(--bg); }
#viewer.open { display: flex; }
#menu, #scrim { display: none; }

#side { flex: none; width: 250px; padding: 14px 10px; overflow-y: auto; background: var(--card); border-inline-end: 1px solid var(--line); }
.sh { padding: 4px 10px 10px; color: var(--mute); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.si { display: flex; align-items: center; gap: 10px; width: 100%; padding: 9px 10px; background: transparent; border: 0; border-radius: 10px; text-align: start; }
.si:hover { background: rgba(255, 255, 255, .07); }
.si.on { background: var(--acc); color: #04202e; font-weight: 700; }
.si .e { flex: none; display: grid; place-items: center; width: 30px; height: 30px; background: rgba(255, 255, 255, .12); border-radius: 8px; font-weight: 800; }
.si.sec { padding: 6px 10px 6px 18px; color: var(--mute); font-size: 14px; }
.si.sec:hover { color: var(--text); }

.vmain { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.vbar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 10px 16px; background: var(--card); border-bottom: 1px solid var(--line); }
.vbar b { flex: 1; min-width: 110px; }
.vt { display: flex; flex-wrap: wrap; gap: 6px; }
.tab { padding: 6px 12px; background: transparent; border: 1px solid var(--line); border-radius: 9px; font-size: 14px; }
.tab.on { background: var(--acc); border-color: var(--acc); color: #04202e; font-weight: 700; }
#frame { flex: 1; width: 100%; border: 0; background: #fff; }


#notes { flex: 1; padding: 24px 20px; overflow-y: auto; }
.un { max-width: 760px; margin: 0 auto 14px; padding: 16px 18px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.uh { display: flex; align-items: baseline; gap: 12px; }
.uh b { padding: 1px 10px; background: var(--acc); color: #04202e; border-radius: 99px; font-size: 13px; }
.uh span { color: var(--mute); font-size: 13px; }
.un ul { margin: 10px 0 0; padding-inline-start: 20px; }


footer {
  padding: 28px 20px calc(28px + env(safe-area-inset-bottom, 0px));
  background: #0b0b0e;
  border-top: 1px solid var(--line);
  color: var(--mute); font-size: 14px; text-align: center;
}
footer a { color: var(--text); }
.fl { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; margin-bottom: 8px; }
.ic img { display: block; width: 22px; height: 22px; object-fit: contain; border-radius: 5px; }
footer .ic img { width: 26px; height: 26px; }
.fi { flex: none; width: 18px; height: 18px; object-fit: contain; border-radius: 4px; }


.svp { max-width: 820px; margin: 0 auto; }
.bk { display: inline-block; margin-top: 26px; color: var(--mute); font-size: 14px; text-decoration: none; }
.bk:hover { color: var(--text); }
.sec-card { margin-bottom: 16px; padding: 20px 22px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; }
.sec-card h2 { margin: 0 0 8px; font-size: 19px; }
.sec-card p  { margin: 0 0 8px; color: var(--text); }
.sec-card ul { margin: 0 0 8px; padding-inline-start: 22px; }
.ct { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
.ctc { display: flex; flex-direction: column; gap: 2px; padding: 14px 16px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; text-decoration: none; word-break: break-word; }
a.ctc:hover { border-color: var(--acc); }
.ctc span { color: var(--mute); font-size: 14px; }


.mo { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 16px; background: rgba(0, 0, 0, .6); }
.mf { width: min(480px, 100%); max-height: 90vh; padding: 20px; overflow: auto; background: var(--card); border: 1px solid var(--line); border-radius: 14px; }
.mf h3 { margin: 0 0 4px; }
.mf label { display: block; margin-top: 10px; color: var(--mute); font-size: 13px; }
.mf input, .mf textarea { width: 100%; margin-top: 4px; padding: 8px 10px; background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 8px; font: inherit; }
.mb { display: flex; justify-content: space-between; margin-top: 14px; }
.ms { margin: 10px 0 0; color: var(--mute); font-size: 14px; }


@media (max-width: 800px) {
  #side { position: fixed; top: env(safe-area-inset-top, 0px); bottom: 0; left: 0; z-index: 5; transform: translateX(-100%); transition: transform .25s; }
  #viewer.menu #side { transform: none; }
  #viewer.menu #scrim { display: block; position: fixed; inset: 0; z-index: 4; background: rgba(0, 0, 0, .5); }
  #menu { display: inline-flex; }
}
@media (max-width: 700px) { .nl:not(.ic) { display: none; } }
@media (max-width: 560px) { .btn.svc span { display: none; } }