/* ══════════════════════════════════════════════════════
   Diamantes de Arecibo — shared look.
   Navy and gold from the team badge. One stylesheet so a
   lesson, the quiz and the coach panel are the same place.
   ══════════════════════════════════════════════════════ */
:root{
  --ink:#0B1B33; --mute:#6B7C91; --line:#D3DEEA; --tint:#F4F8FC;
  --blue:#1D4FA3; --gold:#C5A54A; --good:#0B7A5A; --bad:#A8323F;
}
*{box-sizing:border-box}
html{background:#0B1B33}
body{
  margin:0;height:100dvh;overflow:hidden;display:flex;flex-direction:column;
  font-family:Archivo,"Helvetica Neue",Helvetica,Arial,sans-serif;
  color:var(--ink);background:#fff;line-height:1.55;-webkit-text-size-adjust:100%;
}
.wrap{width:min(760px,93vw);margin:0 auto}

/* ---- bar ---- */
header{flex:0 0 auto;background:#0B1B33;border-bottom:3px solid var(--gold);
  padding-top:env(safe-area-inset-top,0px)}
header .bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0}
.mark{display:block;font-weight:900;font-size:1rem;color:#fff;line-height:1.15;text-decoration:none}
.mark span{display:block;font-size:.58rem;font-weight:800;letter-spacing:.22em;
  text-transform:uppercase;color:var(--gold)}
.who{font-size:.72rem;font-weight:900;letter-spacing:.1em;text-transform:uppercase;
  color:#9FB3C4;text-align:right}
.who a{color:#9FB3C4;text-decoration:none;border-bottom:1px solid #33465A}

main{flex:1 1 auto;min-height:0;overflow-y:auto;overflow-x:hidden}
main .wrap{padding:clamp(18px,4vw,30px) 0 28px}

footer{flex:0 0 auto;background:#0B1B33;color:#9FB3C4;border-top:1px solid #13294d;
  padding:13px 0 calc(13px + env(safe-area-inset-bottom,0px));text-align:center;font-size:.79rem}
footer b{color:#fff;display:block;font-weight:800}

/* ---- type ---- */
h1{font-size:clamp(1.5rem,4.6vw,2.1rem);line-height:1.1;letter-spacing:-.03em;margin:0 0 8px;font-weight:900}
h2{font-size:clamp(1.1rem,3vw,1.4rem);letter-spacing:-.025em;margin:26px 0 8px;font-weight:900}
h3{font-size:1rem;margin:18px 0 6px;font-weight:900}
p{margin:0 0 12px}
.lede{color:var(--mute);margin:0 0 20px;max-width:58ch}
.mute{color:var(--mute)}

/* ---- blocks ---- */
.kick{font-size:.62rem;font-weight:900;letter-spacing:.2em;text-transform:uppercase;
  color:var(--gold);margin-bottom:8px}
.card{display:block;padding:15px 16px;border:2px solid var(--ink);border-radius:4px;
  background:#fff;text-decoration:none;color:var(--ink);margin-bottom:10px;cursor:pointer;
  font:inherit;width:100%;text-align:left}
.card:hover{background:var(--tint)}
.card b{display:block;font-size:1.04rem}
.card span{display:block;color:var(--mute);font-size:.89rem;margin-top:2px}
.card .done{color:var(--good);font-weight:800}

.grid{display:grid;gap:10px}
@media(min-width:620px){.grid.two{grid-template-columns:1fr 1fr}}

ul.points{margin:0 0 14px;padding-left:20px}
ul.points li{margin-bottom:7px}

.key{border-left:4px solid var(--gold);background:var(--tint);padding:13px 15px;margin:14px 0}
.key b{display:block;margin-bottom:3px}
.key p{margin:0;font-size:.95rem}

.chain{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:12px 0}
.chain i{font-style:normal;background:var(--ink);color:#fff;border-radius:3px;
  padding:6px 10px;font-size:.78rem;font-weight:800;letter-spacing:.03em}
.chain em{font-style:normal;color:var(--mute);font-weight:900}

table{width:100%;border-collapse:collapse;margin:8px 0 14px;font-size:.93rem}
th{text-align:left;padding:8px 10px 8px 0;border-bottom:2px solid var(--ink);font-size:.62rem;
  font-weight:900;letter-spacing:.12em;text-transform:uppercase;color:var(--mute)}
td{padding:9px 10px 9px 0;border-bottom:1px solid var(--line);vertical-align:top}
td:last-child,th:last-child{padding-right:0}

/* ---- controls ---- */
label{display:block;font-size:.84rem;font-weight:700;margin:14px 0 5px}
input,select{width:100%;padding:13px 14px;border:2px solid var(--ink);border-radius:4px;
  background:#fff;color:var(--ink);font:inherit;font-size:1rem}
input:focus,select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(29,79,163,.15)}
.pin{letter-spacing:.4em;text-align:center}
.btn{display:block;width:100%;padding:15px;border:2px solid var(--ink);border-radius:4px;
  background:var(--ink);color:#fff;font:inherit;font-weight:800;font-size:1rem;
  cursor:pointer;text-align:center;text-decoration:none;margin-top:12px}
.btn.line{background:#fff;color:var(--ink)}
.btn:hover{background:#13294d}
.btn.line:hover{background:var(--tint)}
.msg{margin-top:10px;font-weight:700;font-size:.9rem;min-height:1.2em}
.msg.bad{color:var(--bad)}
.msg.ok{color:var(--good)}