/* Aula virtual A&R Morelia — capa «Producto digital» del manual de marca (Inter, crema/tinta, degradado azul→morado) */
:root{
  --ink:#0a0a0a;--ink-2:#15142a;--ink-3:#1e1b3a;--paper:#f7f7f7;--paper-2:#ececf3;--paper-3:#d9d9e6;
  --gold:#7c3aed;--gold-2:#a5b4fc;--ember:#9333ea;--blue:#4f46e5;
  --text:#0a0a0a;--muted:#5b5b6b;--line:rgb(10 10 10/.12);--card:#fff;--bg:#fff;--ok:#3f7d3a;
  --r:16px;--r-l:24px;--shadow:0 18px 40px -26px rgb(10 10 10/.55);
  --font-d:"Inter",system-ui,sans-serif;--font-b:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-b);background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}
a{color:inherit}
img{max-width:100%}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.wrap{width:min(100% - 32px,1120px);margin-inline:auto}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:6px}

/* Barra superior */
.topbar{background:var(--ink);color:var(--paper);position:sticky;top:0;z-index:50;border-bottom:1px solid rgb(247 247 247/.08)}
.topbar .wrap{display:flex;align-items:center;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex:none}
.brand-mark{width:38px;height:38px;background:var(--paper);-webkit-mask:url("../img/logo-ar.png") center/contain no-repeat;mask:url("../img/logo-ar.png") center/contain no-repeat}
.brand-text{display:grid;line-height:1.1}
.brand-text strong{font-family:var(--font-d);font-weight:800;letter-spacing:-.02em}
.brand-text small{font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:#a3a3b8;margin-top:3px}
.topnav{margin-left:auto;display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:flex-end;min-width:0}
.topnav a,.topnav button.link{padding:8px 12px;border-radius:999px;font-size:.92rem;text-decoration:none;color:#d4d4e0;background:none;border:0;font-family:inherit;cursor:pointer}
.topnav a:hover,.topnav button.link:hover{background:rgb(247 247 247/.08);color:#fff}
.topnav a[aria-current=page]{background:rgb(247 247 247/.12);color:#fff}
.topnav .who{font-size:.85rem;color:#a3a3b8;padding:0 6px}
@media(max-width:860px){.topnav{flex-wrap:nowrap;gap:2px;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}.topnav::-webkit-scrollbar{display:none}.topbar .wrap{min-width:0}.topnav a,.topnav button.link{padding:7px 9px;font-size:.86rem;white-space:nowrap}}
@media(max-width:700px){.brand-text small{display:none}.topnav .who{display:none}}
@media(max-width:520px){.brand-text{display:none}}

main{flex:1;padding:0 0 72px}
.hero{background:linear-gradient(135deg,var(--ink) 0%,var(--ink-3) 70%,#312e81 100%);color:var(--paper);padding:36px 0 40px;margin-bottom:32px}
.hero .eyebrow{color:var(--gold-2)}
.hero h1{margin-bottom:.3em}
.hero p{color:#d4d4e0;max-width:62ch;margin:0 0 .6em}
.hero .stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin-top:22px;max-width:560px}
.stat{background:rgb(247 247 247/.07);border:1px solid rgb(247 247 247/.12);border-radius:var(--r);padding:12px 16px}
.stat b{display:block;font-family:var(--font-d);font-size:1.7rem;line-height:1.1}
.stat span{font-size:.8rem;color:#a3a3b8}
.crumbs{font-size:.85rem;color:#a3a3b8;margin-bottom:10px}
.crumbs a{text-decoration:none}.crumbs a:hover{color:var(--gold-2)}

h1,h2,h3{font-family:var(--font-d);letter-spacing:-.03em;line-height:1.12;margin:0 0 .5em}
h1{font-size:clamp(1.8rem,4vw,2.7rem)}h2{font-size:1.35rem;margin-top:0}h3{font-size:1.08rem}
.eyebrow{font-size:.76rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#6d28d9;margin:0 0 .5em}
.muted{color:var(--muted)}.hero .muted{color:#a3a3b8}
.section-title{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:34px 0 14px}

/* Botones */
.btn{display:inline-flex;white-space:nowrap;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border-radius:999px;border:1px solid transparent;background:linear-gradient(135deg,var(--blue),var(--gold) 55%,var(--ember));color:#fff;font:600 .95rem var(--font-b);cursor:pointer;text-decoration:none;transition:background .2s,border-color .2s,color .2s,transform .2s}
.btn:hover{filter:brightness(1.08);color:#fff}
.btn:active{transform:translateY(1px)}
.btn.ghost{background:transparent;border-color:var(--line);color:inherit}
.btn.ghost:hover{background:#f2f2f7;border-color:#c8c8d4;color:var(--ink)}
.hero .btn.ghost{border-color:rgb(247 247 247/.3);color:var(--paper)}
.hero .btn.ghost:hover{background:rgb(247 247 247/.14);color:#fff;border-color:rgb(247 247 247/.45)}
.btn.sm{min-height:36px;padding:0 14px;font-size:.85rem}
.btn.danger{background:transparent;border-color:#e3b2ad;color:#9a2a20}
.btn.danger:hover{background:#9a2a20;color:#fff;border-color:#9a2a20}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.spread{justify-content:space-between}

/* Tarjetas y rejillas */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(270px,1fr))}
.ccard{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;text-decoration:none;transition:transform .3s,box-shadow .3s}
.ccard:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.ccard .cover{position:relative;height:110px;padding:14px;display:flex;align-items:flex-end;background:linear-gradient(135deg,var(--ink-2),var(--blue))}
.ccard .cover.taller{background:linear-gradient(135deg,var(--blue),var(--ink-3))}
.ccard .cover.reino{background:linear-gradient(135deg,#4f46e5,#9333ea)}
.ccard .cover.vida{background:linear-gradient(135deg,var(--ink-2),#7c3aed)}
.ccard .cover.ministerio{background:linear-gradient(135deg,var(--ink-3),#6d28d9)}
.ccard .body{padding:16px 18px 18px;display:grid;gap:8px;flex:1;align-content:start}
.ccard h3{margin:0}
.ccard .meta{font-size:.84rem;color:var(--muted)}
.bar{height:8px;border-radius:99px;background:var(--paper-2);overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--gold),var(--ember));border-radius:99px;transition:width .5s}
.hero .bar{background:rgb(247 247 247/.15);max-width:420px}

/* Etiquetas */
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.74rem;font-weight:700;background:var(--gold);color:#fff;white-space:nowrap}
.badge.soon{background:var(--ink);color:var(--paper)}
.badge.draft{background:var(--paper-2);color:var(--muted)}
.badge.ok{background:#dcefd6;color:#2f5d2b}
.badge.min{background:#fde4d6;color:#8a3414}

/* Avisos y formularios */
.alert{padding:12px 16px;border-radius:12px;background:#e8f3e4;border:1px solid #bcd9b3;margin:0 0 20px}
.alert.warn{background:#fff3df;border-color:#f0cf93}
.alert code{font-size:1.05rem;background:#fff;padding:2px 8px;border-radius:8px;user-select:all}
.err{color:#b3261e;font-size:.85rem;margin-top:4px}
.field{margin-bottom:14px}
label{display:block;font-weight:600;font-size:.9rem;margin-bottom:6px}
label.check{display:flex;gap:8px;align-items:center;font-weight:500}
input[type=text],input[type=email],input[type=password],input[type=url],select,textarea,input[type=file]{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:12px;background:#fff;font:inherit;color:inherit}
input:focus,select:focus,textarea:focus{border-color:var(--gold);outline:0;box-shadow:0 0 0 3px rgb(124 58 237/.3)}
textarea{min-height:110px;resize:vertical}
.hint{font-size:.82rem;color:var(--muted);margin-top:4px}

/* Listas */
ul.plain{list-style:none;padding:0;margin:0}
ul.plain>li{padding:12px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;align-items:center}
ul.plain>li:last-child{border-bottom:0}

/* Estructura de curso */
.split{display:grid;gap:28px;align-items:start}
@media(min-width:960px){.split{grid-template-columns:minmax(0,1fr) 340px}.split.rev{grid-template-columns:320px minmax(0,1fr)}}
.sticky{position:sticky;top:84px}
@media(max-width:959px){.split.rev>aside{order:2}.sticky{position:static}}
details.module{background:var(--card);border:1px solid var(--line);border-radius:var(--r);margin-bottom:12px;overflow:hidden}
details.module>summary{list-style:none;cursor:pointer;padding:16px 20px;display:flex;justify-content:space-between;align-items:center;gap:12px;font-family:var(--font-d);font-weight:600}
details.module>summary::-webkit-details-marker{display:none}
details.module>summary::after{content:"+";font-size:1.4rem;line-height:1;color:var(--muted)}
details.module[open]>summary::after{content:"–"}
.lessons{list-style:none;margin:0;padding:0 8px 10px}
.lessons a{display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:12px;text-decoration:none}
.lessons a:hover{background:var(--paper-2)}
.lessons a[aria-current=page]{background:var(--ink);color:var(--paper)}
.dot{width:22px;height:22px;border-radius:50%;border:2px solid var(--paper-3);flex:none;display:grid;place-items:center;font-size:.7rem;color:#fff}
.dot.done{background:var(--ok);border-color:var(--ok)}
.dot.done::after{content:"✓"}
.lessons a[aria-current=page] .dot{border-color:var(--gold)}

/* Lección */
.video{aspect-ratio:16/9;width:100%;border:0;border-radius:var(--r);background:#000;display:block}
.video-link{display:grid;place-items:center;aspect-ratio:16/9;border-radius:var(--r);background:linear-gradient(135deg,var(--ink),var(--ink-3));color:var(--paper);text-decoration:none;text-align:center;padding:20px}
.prose{white-space:pre-wrap;overflow-wrap:anywhere}
.lesson-nav{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:24px}
.res a{display:flex;gap:10px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line);text-decoration:none;overflow-wrap:anywhere}
.res a:last-child{border-bottom:0}
.res a:hover{color:#6d28d9}

/* Acceso */
.login-wrap{display:grid;place-items:center;padding:56px 0}
.login{width:min(100%,430px)}
.login .brand-mark{display:block;background:var(--ink);width:56px;height:56px;margin-bottom:12px}

/* Maestros: editor */
.lesson-edit{border-top:1px solid var(--line);padding:14px 0}
details.add{margin-top:10px}
details.add>summary{cursor:pointer;font-weight:600;color:#6d28d9;font-size:.92rem}
details.add[open]{background:var(--paper);border-radius:12px;padding:12px 14px}

/* Tablas */
.table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.table th,.table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:.92rem;vertical-align:middle}
.table th{background:var(--paper-2);font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.table tr:last-child td{border-bottom:0}
@media(max-width:640px){.table thead{display:none}.table,.table tbody,.table tr,.table td{display:block;width:100%}.table tr{border-bottom:1px solid var(--line);padding:8px 0}.table td{border:0;padding:4px 14px}}

/* Pie y errores */
footer.foot{border-top:1px solid var(--line);padding:22px 0;color:var(--muted);font-size:.85rem}
.error-page{text-align:center;padding:72px 0}
.error-page .code{font-family:var(--font-d);font-size:5rem;font-weight:800;letter-spacing:-.05em;color:var(--gold)}
@media print{.topbar,footer.foot,.btn{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
.steps ol { list-style: decimal; }
.steps a { font-weight: 700; }
.field input[type=number] { width: 100%; max-width: 100%; }
.alert[role=status] { position: sticky; top: 10px; z-index: 40; box-shadow: 0 8px 24px -12px rgb(0 0 0 / .35); }