/* Aula virtual: mismo lenguaje visual del temario (azul marino y detalle dorado) */
:root{
  --bg:#F5F7FA; --surface:#FFFFFF; --ink:#1A2433; --muted:#5A6577; --line:#DCE1E8;
  --navy:#16325C; --navy-2:#1E4078; --navy-soft:#E8EDF5; --gold:#B8862B; --gold-soft:#F6EEDC;
  --ok:#1E7A4F; --ok-soft:#E3F3EA; --err:#B3261E; --err-soft:#FBE7E5;
  --serif:"Source Serif 4", Georgia, "Times New Roman", serif;
  --sans:"Source Sans 3", "Segoe UI", system-ui, -apple-system, sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.55;min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
a{color:var(--navy)}
h1,h2,h3{font-family:var(--serif);line-height:1.2;margin:0;text-wrap:balance}
p{margin:0}
.wrap{max-width:1080px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}
.page{padding-block:32px 48px;display:grid;gap:28px}
.muted{color:var(--muted)} .small{font-size:.88rem} .mt{margin-top:28px}
.kicker{font-size:.75rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--gold)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* barra superior */
.topbar{background:var(--navy);color:#fff}
.topbar-in{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding-block:14px}
.brand{color:#fff;text-decoration:none;display:grid;gap:2px}
.brand-kicker{font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:#E7C27A;font-weight:700}
.brand-name{font-family:var(--serif);font-weight:700;font-size:1.1rem}
.nav{display:flex;flex-wrap:wrap;align-items:center;gap:6px 18px}
.nav a{color:#C9D3E6;text-decoration:none;font-weight:600;padding:4px 0;border-bottom:2px solid transparent}
.nav a.on,.nav a:hover{color:#fff;border-color:#E7C27A}
.nav .who{color:#C9D3E6;font-size:.9rem}
.nav form{margin:0}
.nav .link{color:#fff}

/* botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--navy);color:#fff;border:0;border-radius:6px;padding:10px 18px;font:600 .95rem var(--sans);text-decoration:none;cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--navy-2)}
.btn-ghost{background:transparent;color:var(--navy);box-shadow:inset 0 0 0 1.5px var(--navy)}
.btn-ghost:hover{background:var(--navy-soft)}
.btn-ms{background:#fff;color:#1A2433;box-shadow:inset 0 0 0 1px #8C8C8C;padding:12px 20px;font-size:1rem}
.btn-ms:hover{background:#F3F3F3}
.link{background:none;border:0;padding:0;color:var(--navy);font:600 .9rem var(--sans);cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.link.danger{color:var(--err)}
.icon{background:var(--surface);border:1px solid var(--line);border-radius:4px;width:28px;height:28px;cursor:pointer;color:var(--navy);font-weight:700}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px}

/* mensajes */
.flashes{display:grid;gap:8px}
.flash{padding:12px 16px;border-radius:6px;background:var(--navy-soft)}
.flash.ok{background:var(--ok-soft);color:var(--ok)}
.flash.error{background:var(--err-soft);color:var(--err)}

/* login */
.login-page{display:grid;place-items:center;padding:48px 16px;background:linear-gradient(180deg,var(--navy) 0 42%,var(--bg) 42%)}
.login-card{background:var(--surface);border-radius:10px;box-shadow:0 10px 40px rgba(22,50,92,.18);padding:40px 36px;max-width:440px;width:100%;display:grid;gap:14px;border-top:4px solid var(--gold)}
.login-card h1{font-size:1.7rem;color:var(--navy)}
.login-card .btn-ms{margin-top:8px}
.dev{display:grid;gap:8px;margin-top:12px;padding-top:16px;border-top:1px dashed var(--line)}
.dev input{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:6px;font:inherit}

/* inicio participante */
.hero{display:grid;gap:8px;max-width:68ch}
.hero h1{font-size:clamp(1.7rem,4vw,2.3rem);color:var(--navy)}
.toc{display:flex;flex-wrap:wrap;gap:8px}
.toc a{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:6px 14px;text-decoration:none;font-weight:600;font-size:.92rem}
.toc a:hover{border-color:var(--navy)}
.section{display:grid;gap:14px;scroll-margin-top:16px}
.section-head{display:grid;gap:4px;padding-bottom:10px;border-bottom:2px solid var(--gold)}
.section-head h2{font-size:1.45rem;color:var(--navy)}
.items{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.item{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:14px 16px;display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center}
.item-body{display:grid;gap:2px;min-width:0}
.item-body h3{font-family:var(--sans);font-size:1.02rem;font-weight:700}
.meta{font-size:.85rem;color:var(--muted);overflow-wrap:anywhere}
.badge{width:46px;height:46px;border-radius:6px;display:grid;place-items:center;font:700 .72rem var(--sans);letter-spacing:.04em;color:#fff;background:var(--navy)}
.badge.t-video{background:#A12D3A}.badge.t-enlace{background:var(--gold)}
.pending{color:var(--muted);font-style:italic;padding:14px 16px;border:1px dashed var(--line);border-radius:8px;background:var(--surface)}
.empty{max-width:560px;margin:40px auto;display:grid;gap:14px;text-align:center}
.empty h1{color:var(--navy)}

/* admin */
.admin-head{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding-bottom:12px}
.admin-head h1{font-size:1.7rem;color:var(--navy)}
.tabs{display:flex;gap:4px;flex-wrap:wrap}
.tabs a{padding:8px 14px;border-radius:6px;text-decoration:none;font-weight:600;color:var(--muted)}
.tabs a.on{background:var(--navy);color:#fff}
.admin-grid{display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:24px;align-items:start}
.admin-list{display:grid;gap:16px}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:20px;display:grid;gap:12px;min-width:0}
.panel h2{font-size:1.15rem;color:var(--navy)}
.panel.narrow{max-width:620px}
.form{display:grid;gap:6px}
.form label{font-weight:600;font-size:.9rem;margin-top:6px}
.form input:not([type=checkbox]):not([type=radio]),.form select,.form textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:6px;font:inherit;background:#fff;color:var(--ink)}
.form textarea{resize:vertical}
.form .btn{margin-top:10px;justify-self:start}
.form .check{display:flex;gap:8px;align-items:center;font-weight:500}
.tipo{border:0;padding:0;margin:6px 0 0;display:flex;flex-wrap:wrap;gap:6px 16px}
.tipo legend{font-weight:600;font-size:.9rem;padding:0;margin-bottom:4px}
.tipo label{font-weight:500;margin:0;display:flex;gap:6px;align-items:center}
.row{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.sec-edit summary{display:flex;align-items:baseline;justify-content:space-between;gap:12px;cursor:pointer;list-style:none}
.sec-edit summary::-webkit-details-marker{display:none}
.sec-edit[open] summary{margin-bottom:10px}
.sec-edit form.inline{margin-bottom:10px}
.items.compact .item{grid-template-columns:auto minmax(0,1fr);padding:12px}
.items.compact .badge{width:40px;height:40px}
.actions{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;padding-top:8px;border-top:1px solid var(--line)}
.actions form{margin:0}
.hidden-item{background:#FAFAFA}
.hidden-item .item-body h3{color:var(--muted)}
.pill{font:700 .7rem var(--sans);text-transform:uppercase;letter-spacing:.06em;background:var(--gold-soft);color:#7A5A12;padding:2px 8px;border-radius:999px;vertical-align:middle}
.table-wrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:.93rem}
th,td{text-align:left;padding:10px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);background:var(--navy-soft)}
td.num{font-variant-numeric:tabular-nums}
td.mono{font-family:ui-monospace,Consolas,monospace;font-size:.85rem}
tr.off td{color:var(--muted);text-decoration:line-through}
tr.off td:last-child{text-decoration:none}

.foot{border-top:1px solid var(--line);color:var(--muted);font-size:.85rem}
.foot .wrap{padding-block:18px}

@media (max-width:820px){
  .admin-grid{grid-template-columns:1fr}
}
@media (max-width:560px){
  .item{grid-template-columns:auto 1fr}
  .item>.btn{grid-column:1/-1;justify-self:stretch}
  .login-card{padding:28px 22px}
}

/* acceso con usuario y contraseña */
.btn-block{width:100%;justify-self:stretch}
.login-card .form .btn{margin-top:14px}
.login-card .form input{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:6px;font:inherit}
.or{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:.85rem}
.or::before,.or::after{content:"";flex:1;border-top:1px solid var(--line)}
.mono{font-family:ui-monospace,Consolas,"Courier New",monospace}
.pill.ok{background:var(--ok-soft);color:var(--ok)}
.cell-actions{display:flex;flex-wrap:wrap;gap:6px 14px}
.cell-actions form{margin:0}
.nav a.who{font-weight:400;font-size:.9rem}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:16px;margin-top:20px}
.access-card{background:var(--surface);border:1.5px dashed #9AA6B8;border-radius:10px;padding:18px 20px;display:grid;gap:6px;break-inside:avoid}
.access-card h3{font-size:1.1rem;color:var(--navy)}
.access-card dl{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;margin:8px 0 0;align-items:baseline}
.access-card dt{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.access-card dd{margin:0;overflow-wrap:anywhere}
.access-card .big{font-size:1.15rem;font-weight:700;color:var(--ink)}
@media print{
  body{background:#fff}
  .no-print{display:none!important}
  .page{padding:0}
  .cards{grid-template-columns:1fr 1fr;gap:10px;margin:0}
  .access-card{border-color:#666}
}