/* TheStaff — GitHub Pages site. Dark Material Design + paper elevation. */
:root {
  --bg: #0b1020;
  --surface-1: #131a2e;
  --surface-2: #1b2540;
  --surface-3: #243150;
  --border: #2a3658;
  --text: #e7ecf6;
  --muted: white;
  --primary: #5b8cff;
  --primary-700: #3258c9;
  --red: #e0202a;
  --green: #22c55e;
  --radius: 14px;
  /* Material elevation (dark): ambient + key shadow */
  --elev-1: 0 1px 2px rgba(0,0,0,.5), 0 1px 3px rgba(0,0,0,.35);
  --elev-2: 0 2px 6px rgba(0,0,0,.5), 0 4px 12px rgba(0,0,0,.4);
  --elev-3: 0 6px 14px rgba(0,0,0,.55), 0 12px 32px rgba(0,0,0,.45);
  color-scheme: dark;
  font-family: Roboto, "Segoe UI", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.6;
  background-image: radial-gradient(1200px 600px at 50% -10%, #18213c 0%, transparent 60%); }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h2 { font-size: 1.7rem; margin: 0 0 .4rem; letter-spacing: .2px; }
h3 { margin: 0 0 .35rem; font-size: 1.05rem; }
code { font-family: ui-monospace, "Roboto Mono", monospace; background: rgba(255,255,255,.06);
  padding: .05em .35em; border-radius: 5px; font-size: .9em; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }

.elev-1 { box-shadow: var(--elev-1); }
.elev-2 { box-shadow: var(--elev-2); }
.elev-3 { box-shadow: var(--elev-3); }

/* ---- app bar ---- */
.appbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center;
  justify-content: space-between; gap: 1rem; padding: .6rem 1.2rem;
  background: color-mix(in srgb, var(--surface-1) 92%, transparent);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.appbar-brand { display: flex; align-items: center; gap: .5rem; font-weight: 800;
  color: var(--text); font-size: 1.05rem; }
.appbar-nav { display: flex; align-items: center; gap: 1.1rem; }
.appbar-nav a { color: var(--muted); font-weight: 600; font-size: .92rem; }
.appbar-nav a:hover { color: var(--text); text-decoration: none; }

/* ---- buttons (Material-ish) ---- */
.btn { display: inline-flex; align-items: center; gap: .4rem; border-radius: 999px;
  padding: .5rem 1.1rem; font-weight: 600; font-size: .92rem; cursor: pointer;
  border: 1px solid transparent; transition: box-shadow .15s, background .15s, transform .05s; }
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-filled { background: var(--primary); color: #06112e; box-shadow: var(--elev-1); }
.btn-filled:hover { background: #6f9bff; box-shadow: var(--elev-2); }
.btn-outlined { border-color: var(--border); color: var(--text); }
.btn-outlined:hover { background: var(--surface-2); }
.btn.lg { padding: .7rem 1.5rem; font-size: 1rem; }

/* ---- hero ---- */
.hero { text-align: center; padding: 2.6rem 1.2rem 1.4rem; max-width: 1000px; margin: 0 auto; }
.hero-banner { width: min(820px, 100%); border-radius: var(--radius); border: 1px solid var(--border); }
.hero-tagline { font-size: 1.15rem; max-width: 720px; margin: 1.4rem auto .2rem; color: #cdd6ee; }
.hero-cta { display: flex; gap: .8rem; justify-content: center; flex-wrap: wrap; margin: 1.3rem 0 .6rem; }
.hero-note { color: var(--muted); font-size: .85rem; }

/* ---- layout ---- */
.container { max-width: 1040px; margin: 0 auto; padding: 1rem 1.2rem 3rem; }
section { margin: 2.6rem 0; }
.card { background: linear-gradient(180deg, var(--surface-2), var(--surface-1));
  border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.2rem; }

/* ---- features ---- */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.features .card { transition: box-shadow .18s, transform .18s; }
.features .card:hover { transform: translateY(-3px); box-shadow: var(--elev-3); }
.card-ic { font-size: 1.7rem; }
.features h3 { margin-top: .5rem; }
.features p { margin: 0; color: var(--muted); font-size: .92rem; }

/* ---- run blocks ---- */
.run { margin: 1rem 0; }
.run-head { font-weight: 600; margin-bottom: .7rem; color: #cdd6ee; }
.chip { display: inline-block; background: color-mix(in srgb, var(--primary) 22%, transparent);
  color: #cfe0ff; border: 1px solid color-mix(in srgb, var(--primary) 45%, transparent);
  border-radius: 999px; padding: .08rem .6rem; font-size: .76rem; font-weight: 700; margin-right: .5rem; }
.chip-red { background: color-mix(in srgb, var(--red) 20%, transparent); color: #ffd0d2;
  border-color: color-mix(in srgb, var(--red) 50%, transparent); }
.codeblock { position: relative; background: #0a0f1f; border: 1px solid var(--border);
  border-radius: 10px; }
.codeblock pre { margin: 0; padding: .85rem 1rem; overflow-x: auto; }
.codeblock code { background: none; padding: 0; color: #d7e2ff; font-size: .86rem; line-height: 1.7; white-space: pre; }
.codeblock.sm code { font-size: .82rem; }
.copy-btn { position: absolute; top: .5rem; right: .5rem; background: var(--surface-3);
  color: var(--text); border: 1px solid var(--border); border-radius: 7px; padding: .25rem .6rem;
  font-size: .76rem; font-weight: 600; cursor: pointer; transition: background .15s; }
.copy-btn:hover { background: var(--primary); color: #06112e; }
.copy-btn.ok { background: var(--green); color: #042814; }
.open-hint { margin: .7rem 0 .2rem; font-size: .95rem; }
.open-hint .url { font-family: ui-monospace, monospace; background: rgba(91,140,255,.12);
  border: 1px solid color-mix(in srgb, var(--primary) 35%, transparent); padding: .12rem .5rem; border-radius: 6px; }
.open-hint span { color: var(--muted); margin-left: .4rem; font-size: .88rem; }

/* ---- carousel ---- */
.carousel { position: relative; padding: 0; overflow: hidden; }
.slides { display: flex; transition: transform .4s cubic-bezier(.4,0,.2,1); }
.slide { flex: 0 0 100%; margin: 0; }
.slide img { width: 100%; display: block; border-bottom: 1px solid var(--border); background: var(--bg); cursor: zoom-in; }
.slide figcaption { padding: .8rem 1.1rem; color: var(--muted); font-size: .92rem; }
.slide figcaption strong { color: var(--text); }
.carousel .nav { position: absolute; top: 38%; transform: translateY(-50%); width: 44px; height: 44px;
  border-radius: 50%; border: none; background: rgba(10,15,31,.78); color: #fff; font-size: 1.6rem;
  cursor: pointer; display: grid; place-items: center; box-shadow: var(--elev-2); transition: background .15s; }
.carousel .nav:hover { background: var(--primary); color: #06112e; }
.carousel .prev { left: 12px; } .carousel .next { right: 12px; }
.carousel .fs { top: 12px; right: 12px; transform: none; width: 38px; height: 38px; }
.dots { display: flex; gap: .5rem; justify-content: center; padding: .8rem; }
.dots button { width: 9px; height: 9px; border-radius: 50%; border: none; background: var(--surface-3); cursor: pointer; padding: 0; }
.dots button.active { background: var(--primary); width: 22px; border-radius: 6px; }

/* ---- fullscreen lightbox ---- */
.lightbox { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center;
  background: rgba(3, 6, 14, .93); backdrop-filter: blur(4px); padding: 2.5rem; }
.lightbox[hidden] { display: none; }
.lb-img { max-width: 94vw; max-height: 86vh; object-fit: contain; border-radius: 10px;
  border: 1px solid var(--border); box-shadow: var(--elev-3); background: var(--bg); }
.lb-cap { position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%); max-width: 90vw;
  text-align: center; color: #cdd6ee; font-size: .92rem; background: rgba(10,15,31,.7);
  border: 1px solid var(--border); border-radius: 999px; padding: .35rem .9rem; }
.lb-close { position: absolute; top: 16px; right: 18px; width: 42px; height: 42px; border-radius: 50%;
  border: none; background: rgba(10,15,31,.8); color: #fff; font-size: 1.3rem; cursor: pointer; box-shadow: var(--elev-2); }
.lb-nav { position: absolute; top: 50%; transform: translateY(-50%); width: 48px; height: 48px; border-radius: 50%;
  border: none; background: rgba(10,15,31,.8); color: #fff; font-size: 1.8rem; cursor: pointer; box-shadow: var(--elev-2); }
.lb-prev { left: 18px; } .lb-next { right: 18px; }
.lb-close:hover, .lb-nav:hover { background: var(--primary); color: #06112e; }

/* ---- config ---- */
.config-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; align-items: start; }
.config-text h3 { margin-top: 1rem; color: var(--primary); }
.config-text p { color: #cdd6ee; }
.config-shot { padding: .5rem; position: sticky; top: 70px; }
.config-shot img { width: 100%; border-radius: 9px; display: block; }
.config-shot figcaption { color: var(--muted); font-size: .82rem; padding: .5rem .3rem 0; }

/* ---- footer ---- */
.footer { border-top: 1px solid var(--border); margin-top: 2rem; padding: 1.6rem 1.2rem 2.4rem;
  text-align: center; color: #cdd6ee; }
.footer .small { color: var(--muted); }

@media (max-width: 760px) {
  .appbar-nav a:not(.btn) { display: none; }
  .config-grid { grid-template-columns: 1fr; }
  .config-shot { position: static; }
}