/* ===========================================================
   EA8IE · Estación de radioaficionado — hoja de estilos común
   Estética: "el shack al anochecer" — petróleo profundo,
   dial ámbar retroiluminado, telemetría en verde fósforo.
   =========================================================== */
:root{
  --abyss:#08191f; --panel:#0f2831; --panel2:#14343f; --line:#1f4453;
  --amber:#f0a93b; --amber-soft:#f6c26b; --phosphor:#63d6a0;
  --ink:#e9e2d0; --muted:#88a2ac;
  --maxw:1120px;
  --f-disp:'Archivo',system-ui,sans-serif;
  --f-mono:'IBM Plex Mono',ui-monospace,monospace;
  --f-body:'IBM Plex Sans',system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--abyss); color:var(--ink);
  font-family:var(--f-body); font-size:17px; line-height:1.6;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
a{color:inherit}
::selection{background:var(--amber); color:#08191f}
:focus-visible{outline:2px solid var(--amber); outline-offset:3px; border-radius:2px}
img{max-width:100%}

.wrap{max-width:var(--maxw); margin:0 auto; padding:0 24px}
.section{padding:88px 0; position:relative}
.section + .section{border-top:1px solid var(--line)}
.narrow{max-width:820px}

.eyebrow{
  font-family:var(--f-mono); font-size:.78rem; letter-spacing:.28em;
  text-transform:uppercase; color:var(--amber); font-weight:600;
  display:flex; align-items:center; gap:12px; margin:0 0 22px;
}
.eyebrow::before{content:""; width:26px; height:2px; background:var(--amber); display:inline-block}

h2.sec{font-family:var(--f-disp); font-weight:800; font-size:clamp(1.9rem,4.2vw,3rem); letter-spacing:-.01em; line-height:1.05; margin:0 0 18px}
h3.sub{font-family:var(--f-disp); font-weight:700; font-size:1.35rem; margin:38px 0 14px; letter-spacing:-.01em}
p{color:#cfd8d5}
.muted{color:var(--muted)}
.lead{font-size:1.12rem; color:#d5ddda; max-width:60ch}

/* ---------- NAV ---------- */
header.nav{position:sticky; top:0; z-index:50; background:rgba(8,25,31,.82); backdrop-filter:blur(10px); border-bottom:1px solid var(--line)}
.nav-in{display:flex; align-items:center; justify-content:space-between; height:64px}
.brand{display:flex; align-items:center; gap:12px; font-family:var(--f-mono); font-weight:700; letter-spacing:.06em; text-decoration:none}
.brand .call{font-size:1.05rem; color:var(--ink)}
.led{width:9px; height:9px; border-radius:50%; background:var(--phosphor); box-shadow:0 0 10px var(--phosphor); animation:pulse 2.4s ease-in-out infinite}
.qrv{font-size:.68rem; letter-spacing:.22em; color:var(--phosphor)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
nav.links{display:flex; gap:28px}
nav.links a{font-family:var(--f-mono); font-size:.82rem; letter-spacing:.08em; text-transform:uppercase; text-decoration:none; color:var(--muted); transition:color .18s; padding:6px 0; position:relative}
nav.links a:hover,nav.links a.active{color:var(--ink)}
nav.links a::after{content:""; position:absolute; left:0; bottom:0; width:0; height:2px; background:var(--amber); transition:width .22s}
nav.links a:hover::after,nav.links a.active::after{width:100%}
.menu-btn{display:none; background:none; border:1px solid var(--line); color:var(--ink); width:42px; height:38px; border-radius:8px; cursor:pointer; font-size:1.1rem}

/* ---------- BUTTONS ---------- */
.cta{display:flex; gap:14px; flex-wrap:wrap; margin-top:32px}
.btn{font-family:var(--f-mono); font-size:.85rem; letter-spacing:.08em; text-transform:uppercase; font-weight:600; text-decoration:none; padding:14px 22px; border-radius:10px; transition:transform .15s, background .18s, border-color .18s; display:inline-flex; align-items:center; gap:9px}
.btn-primary{background:var(--amber); color:#08191f; border:1px solid var(--amber)}
.btn-primary:hover{background:var(--amber-soft); transform:translateY(-2px)}
.btn-ghost{background:transparent; color:var(--ink); border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--amber); color:var(--amber); transform:translateY(-2px)}

/* ---------- PAGE HEADER (interior pages) ---------- */
.page-head{position:relative; padding:64px 0 48px; border-bottom:1px solid var(--line); overflow:hidden}
.page-head h1{font-family:var(--f-disp); font-weight:900; letter-spacing:-.02em; line-height:1.02; font-size:clamp(2.1rem,5vw,3.4rem); margin:0 0 16px}
.page-head .lead{margin:0}
.waves{position:absolute; inset:0; z-index:0; pointer-events:none; opacity:.45}
.page-head .wrap{position:relative; z-index:2}
.crumbs{font-family:var(--f-mono); font-size:.74rem; letter-spacing:.1em; text-transform:uppercase; color:var(--muted); margin-bottom:20px}
.crumbs a{color:var(--amber); text-decoration:none}
.crumbs a:hover{text-decoration:underline}

/* ---------- CARDS ---------- */
.grid-2{display:grid; grid-template-columns:1fr 1fr; gap:18px}
.grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:18px}
.grid-4{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
.card{background:var(--panel); border:1px solid var(--line); border-radius:14px; padding:22px; transition:transform .18s, border-color .18s}
.card:hover{transform:translateY(-3px); border-color:#2c5a6b}
.card h3{font-family:var(--f-mono); font-size:.74rem; letter-spacing:.16em; text-transform:uppercase; color:var(--amber); margin:0 0 14px}
.card ul{list-style:none; margin:0; padding:0}
.card li{padding:7px 0; border-bottom:1px dashed #ffffff10; font-size:.95rem; color:#d5ddda}
.card li:last-child{border-bottom:none}
.card li b{color:var(--ink); font-weight:600}
.card li span{display:block; font-size:.82rem; color:var(--muted); font-family:var(--f-mono)}

/* nav-style link cards */
.linkcard{display:flex; flex-direction:column; gap:6px; text-decoration:none; background:var(--panel); border:1px solid var(--line); border-radius:12px; padding:20px; transition:transform .16s, border-color .16s, background .16s}
.linkcard:hover{transform:translateY(-3px); border-color:var(--amber); background:#12303a}
.linkcard .rt{font-family:var(--f-mono); font-size:.95rem; font-weight:600; color:var(--ink)}
.linkcard .rd{font-size:.84rem; color:var(--muted)}
.linkcard .arw{color:var(--amber); font-family:var(--f-mono); font-size:.8rem; letter-spacing:.1em; margin-top:2px}

/* ---------- TABLES ---------- */
.tbl-wrap{overflow-x:auto; border:1px solid var(--line); border-radius:14px; margin:22px 0}
table.tbl{width:100%; border-collapse:collapse; font-size:.94rem; min-width:520px}
table.tbl caption{caption-side:top; text-align:left; font-family:var(--f-mono); font-size:.72rem; letter-spacing:.16em; text-transform:uppercase; color:var(--amber); padding:16px 18px 4px}
table.tbl th{font-family:var(--f-mono); font-size:.68rem; letter-spacing:.14em; text-transform:uppercase; color:var(--amber); text-align:left; padding:14px 18px; border-bottom:2px solid var(--line); background:#0c232b; white-space:nowrap}
table.tbl td{padding:11px 18px; border-bottom:1px solid #ffffff0d; color:#d5ddda; vertical-align:top}
table.tbl tr:last-child td{border-bottom:none}
table.tbl tr:hover td{background:#0d262f}
table.tbl td.code,table.tbl td.mono{font-family:var(--f-mono); color:var(--ink); letter-spacing:.03em; white-space:nowrap}
table.tbl td .hl{color:var(--amber)}

/* ---------- CALLOUT ---------- */
.callout{border-left:3px solid var(--amber); background:#0d232b; padding:18px 22px; border-radius:0 12px 12px 0; margin:26px 0}
.callout .k{font-family:var(--f-mono); font-size:.7rem; letter-spacing:.22em; text-transform:uppercase; color:var(--amber); display:block; margin-bottom:8px}
.callout p{margin:0; font-size:1rem}
.callout b{color:var(--ink)}
.callout.info{border-color:var(--phosphor)}
.callout.info .k{color:var(--phosphor)}

/* prose links */
.prose a{color:var(--amber); text-decoration:none; border-bottom:1px solid #f0a93b40}
.prose a:hover{border-color:var(--amber)}
.prose p{margin:0 0 16px}

/* link list */
.linklist{background:var(--panel); border:1px solid var(--line); border-radius:14px; padding:8px 20px}
.linklist a{display:flex; justify-content:space-between; align-items:center; gap:12px; padding:14px 0; text-decoration:none; border-bottom:1px solid #ffffff0d; font-family:var(--f-mono); font-size:.86rem; letter-spacing:.03em; color:#d5ddda; transition:color .16s}
.linklist a:last-child{border-bottom:none}
.linklist a:hover{color:var(--amber)}
.linklist a .arw{color:var(--muted)}
.linklist a:hover .arw{color:var(--amber)}

/* ---------- FOOTER ---------- */
footer{border-top:1px solid var(--line); padding:44px 0 54px; text-align:center}
.foot-73{font-family:var(--f-mono); color:var(--amber); letter-spacing:.3em; font-size:.9rem; margin-bottom:14px}
.foot-call{font-family:var(--f-disp); font-weight:900; font-size:1.5rem; letter-spacing:.02em; color:var(--ink)}
footer p{font-family:var(--f-mono); font-size:.74rem; color:var(--muted); letter-spacing:.04em; margin:6px 0}
footer nav{margin:16px 0 6px; display:flex; gap:18px; justify-content:center; flex-wrap:wrap}
footer nav a{font-family:var(--f-mono); font-size:.74rem; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); text-decoration:none}
footer nav a:hover{color:var(--amber)}

/* ---------- REVEAL ---------- */
.reveal{opacity:0; transform:translateY(22px); transition:opacity .7s ease, transform .7s ease}
.reveal.in{opacity:1; transform:none}

/* ---------- RESPONSIVE ---------- */
@media(max-width:920px){
  .grid-3{grid-template-columns:1fr 1fr}
  .grid-4{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  body{font-size:16px}
  .section{padding:60px 0}
  .menu-btn{display:block}
  nav.links{position:absolute; top:64px; left:0; right:0; flex-direction:column; gap:0; background:#0b222a; border-bottom:1px solid var(--line); padding:8px 24px 18px; display:none}
  nav.links.open{display:flex}
  nav.links a{padding:13px 0; border-bottom:1px solid #ffffff0d}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important; scroll-behavior:auto!important}
  .reveal{opacity:1; transform:none; transition:none}
}