/* The pages around the terminal: home, academy, login, profile, admin. The terminal keeps its own dense styles. */
:root { --bg:#0f1115; --panel:#171a21; --line:#262b36; --text:#d7dce5; --muted:#8a93a6; --bid:#26a69a; --ask:#ef5350; --accent:#4c8dff; }
* { box-sizing:border-box; }
body { margin:0; background:var(--bg); color:var(--text); font:15px/1.55 system-ui, -apple-system, sans-serif; }
a { color:var(--accent); text-decoration:none; } a:hover { text-decoration:underline; }
[hidden] { display:none !important; }

#nav { display:flex; flex-wrap:wrap; gap:6px 18px; align-items:center; padding:12px 20px; background:var(--panel); border-bottom:1px solid var(--line); font-size:14px; }
#nav .brand { font-weight:600; color:var(--text); margin-right:8px; }
#nav a { color:var(--muted); } #nav a:hover, #nav a.on { color:var(--text); text-decoration:none; }
#nav .who { margin-left:auto; display:flex; gap:12px; align-items:center; color:var(--muted); }

main { max-width:880px; margin:0 auto; padding:28px 20px 60px; }
main.wide { max-width:1180px; }
h1 { font-size:26px; line-height:1.25; margin:0 0 10px; }
h2 { font-size:17px; margin:30px 0 10px; }
h2 span { font-weight:400; color:var(--muted); font-size:14px; margin-left:6px; }
p { margin:0 0 12px; }
.lead { font-size:17px; color:var(--muted); max-width:680px; }
.muted { color:var(--muted); } .pos { color:var(--bid); } .neg { color:var(--ask); }
.err { color:var(--ask); min-height:22px; }
code { background:var(--panel); border:1px solid var(--line); border-radius:4px; padding:1px 5px; font-size:13px; word-break:break-all; user-select:all; }

input, select, button, .btn { background:var(--bg); color:var(--text); border:1px solid var(--line); border-radius:6px; padding:7px 10px; font:inherit; font-size:14px; }
button, .btn { cursor:pointer; display:inline-block; }
button:hover, .btn:hover { border-color:var(--accent); text-decoration:none; }
button:disabled { opacity:.5; cursor:default; }
.btn.main, button.main { background:var(--accent); border-color:var(--accent); color:#fff; font-weight:600; }
button.small { padding:2px 8px; font-size:13px; }
.row { display:flex; flex-wrap:wrap; gap:8px; align-items:center; margin:0 0 12px; }

.box { background:var(--panel); border:1px solid var(--line); border-radius:8px; padding:16px 18px; margin:0 0 14px; }
.cards { display:grid; grid-template-columns:repeat(auto-fill, minmax(240px, 1fr)); gap:12px; margin:0 0 14px; }
.cards .box { margin:0; }
.cards h3 { font-size:15px; margin:0 0 4px; }
.cards p { margin:0; color:var(--muted); font-size:14px; }

.scroll { overflow-x:auto; }
table { border-collapse:collapse; width:100%; font-size:14px; }
th, td { text-align:left; padding:8px 10px; border-bottom:1px solid var(--line); vertical-align:top; }
th { color:var(--muted); font-weight:400; white-space:nowrap; }
td .row { margin:4px 0 0; gap:6px; }
tr.off td { opacity:.55; }

.lessons { list-style:none; margin:0; padding:0; counter-reset:lesson; }
.lessons li { counter-increment:lesson; }
.lessons a { display:flex; gap:14px; align-items:baseline; padding:14px 18px; margin:0 0 10px; background:var(--panel); border:1px solid var(--line); border-radius:8px; color:var(--text); }
.lessons a:hover { border-color:var(--accent); text-decoration:none; }
.lessons a::before { content:counter(lesson); color:var(--muted); min-width:18px; font-variant-numeric:tabular-nums; }
.lessons b { display:block; font-weight:600; }
.lessons span { color:var(--muted); font-size:14px; }
.lessons i { margin-left:auto; font-style:normal; font-size:12px; color:var(--muted); white-space:nowrap; }
.lesson-nav { display:flex; justify-content:space-between; gap:12px; margin-top:30px; }