/* Trading Lab site. Dark by default to match the app, light when the system asks for it. No build step, no dependencies. */
:root {
  --bg: #1e1e1e; --bg2: #252526; --card: #2a2a2b; --border: #3c3c3c; --fg: #d4d4d4; --head: #ffffff; --muted: #9a9a9a;
  --accent: #0e7ad1; --accent-fg: #ffffff; --accent2: #4ec9b0; --shadow: 0 10px 40px rgba(0,0,0,.45);
}
@media (prefers-color-scheme: light) {
  :root { --bg: #ffffff; --bg2: #f4f5f7; --card: #ffffff; --border: #d9dce1; --fg: #2b2f36; --head: #0d1117; --muted: #5d6673; --accent: #0b63b3; --accent2: #0f8a73; --shadow: 0 10px 30px rgba(20,30,50,.15); }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 70px; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", sans-serif; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); } a:hover { text-decoration: none; }
code { background: var(--bg2); border: 1px solid var(--border); padding: 0 5px; border-radius: 4px; font-size: .9em; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; } .narrow { max-width: 760px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: var(--accent-fg); padding: 8px 12px; z-index: 20; border-radius: 4px; } .skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--accent2); outline-offset: 2px; }
.muted { color: var(--muted); } .small { font-size: 14px; }

.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 56px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 650; color: var(--head); text-decoration: none; font-size: 18px; }
.brand img { border-radius: 6px; }
nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; justify-content: flex-end; } nav a { color: var(--fg); text-decoration: none; padding: 6px 10px; border-radius: 6px; font-size: 15px; } nav a:hover { background: var(--bg2); }
nav a.gh { border: 1px solid var(--border); }

.hero { padding: 64px 0 40px; background: radial-gradient(900px 400px at 15% -10%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 44px; align-items: center; }
.eyebrow { color: var(--accent2); font-weight: 600; font-size: 14px; letter-spacing: .04em; text-transform: uppercase; margin: 0 0 10px; }
h1 { font-size: clamp(34px, 5vw, 54px); line-height: 1.08; margin: 0 0 16px; color: var(--head); letter-spacing: -.02em; }
.lead { font-size: 18px; color: var(--fg); margin: 0 0 24px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 20px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg2); color: var(--fg); text-decoration: none; font-weight: 600; }
.btn:hover { border-color: var(--accent); } .btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); } .btn.primary:hover { filter: brightness(1.1); }
.shot { display: block; border-radius: 10px; overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow); } .shot img { width: 100%; }

.section { padding: 64px 0; } .section.alt { background: var(--bg2); border-block: 1px solid var(--border); }
h2 { font-size: clamp(26px, 3.4vw, 36px); line-height: 1.2; margin: 0 0 8px; color: var(--head); letter-spacing: -.01em; } h3 { margin: 0 0 6px; color: var(--head); font-size: 18px; }
.sub { color: var(--muted); margin: 0 0 28px; font-size: 18px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 18px 18px 20px; } .card p { margin: 0; color: var(--fg); font-size: 15px; }
.gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; margin-top: 24px; }
.gallery figure { margin: 0; } .gallery a { display: block; border-radius: 8px; overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow); } .gallery a:hover { border-color: var(--accent); }
.gallery figcaption { margin-top: 10px; font-size: 15px; color: var(--muted); } .gallery figcaption b { color: var(--head); }

.dl-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 16px; margin-bottom: 26px; }
.dl { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 18px; display: flex; flex-direction: column; gap: 10px; }
.dl.mine { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.dl h3 { display: flex; align-items: center; gap: 8px; margin: 0; } .dl .tag { font-size: 12px; font-weight: 600; background: var(--accent); color: var(--accent-fg); padding: 1px 8px; border-radius: 10px; }
.dl .btn { justify-content: space-between; width: 100%; } .dl .btn small { font-weight: 400; opacity: .85; }
.two { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 28px; margin: 12px 0 18px; } .two ul, .narrow ul { padding-left: 20px; margin: 0; } li { margin-bottom: 8px; }
.narrow p { margin: 0 0 14px; }

.foot { border-top: 1px solid var(--border); padding: 30px 0 44px; background: var(--bg); } .foot .links { display: flex; gap: 22px; flex-wrap: wrap; margin-bottom: 14px; } .foot p { margin: 0 0 8px; }

@media (max-width: 860px) {
  .hero { padding-top: 36px; } .hero-grid { grid-template-columns: 1fr; gap: 28px; } .gallery { grid-template-columns: 1fr; }
  .bar { height: auto; padding: 8px 20px; flex-wrap: wrap; } nav { justify-content: flex-start; }
}
@media (max-width: 520px) { nav a { padding: 6px 7px; font-size: 14px; } nav { gap: 0; } .brand { font-size: 17px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }