/* ============================================================
   Aula · Historia Económica Colombiana II
   Sistema visual: "archivo de papel" (claro) / "archivo nocturno" (oscuro)
   ============================================================ */

:root{
  --bg:#f6f2ea; --bg2:#fffdf8; --bg3:#efe8db;
  --ink:#221f1a; --ink2:#463f35; --muted:#776c5d;
  --line:#e2d9c9; --line2:#d3c7b2;
  --accent:#9a5527; --accent-soft:#f0e0d0; --accent-ink:#7c4420;
  --green:#2f5d4f; --green-soft:#dcebe3;
  --gold:#a8791a; --gold-soft:#f3e7c9;
  --red:#a03434; --red-soft:#f6ddd9;
  --blue:#2b4b7a; --blue-soft:#dde5f2;
  --shadow:0 1px 2px rgba(60,45,25,.06),0 8px 24px -12px rgba(60,45,25,.18);
  --shadow-lg:0 2px 4px rgba(60,45,25,.07),0 24px 56px -20px rgba(60,45,25,.30);
  --r:14px; --r-sm:9px;
  --serif:"Spectral","Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:"IBM Plex Mono","Cascadia Mono",Consolas,"SF Mono",Menlo,monospace;
  --art-filter:none;
  color-scheme:light;
}
[data-theme="dark"]{
  --bg:#13110e; --bg2:#1b1815; --bg3:#232019;
  --ink:#ece5d9; --ink2:#c9bfb0; --muted:#948a7c;
  --line:#2f2b24; --line2:#3d382f;
  --accent:#d9944f; --accent-soft:#332318; --accent-ink:#e8ab6b;
  --green:#6fb39c; --green-soft:#17281f;
  --gold:#cea54a; --gold-soft:#2b2312;
  --red:#d97b74; --red-soft:#2d1818;
  --blue:#7ea4d8; --blue-soft:#161f2e;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -12px rgba(0,0,0,.6);
  --shadow-lg:0 2px 4px rgba(0,0,0,.5),0 24px 56px -20px rgba(0,0,0,.8);
  --art-filter:invert(1) hue-rotate(180deg) saturate(.8) brightness(1.15);
  color-scheme:dark;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--ink);
  font-family:var(--sans); font-size:15px; line-height:1.6;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(1200px 500px at 85% -10%, color-mix(in srgb,var(--accent) 7%,transparent), transparent 70%),
    radial-gradient(900px 400px at 5% 100%, color-mix(in srgb,var(--green) 6%,transparent), transparent 70%);
  background-attachment:fixed;
}
h1,h2,h3,h4{font-family:var(--serif); font-weight:600; letter-spacing:-.01em; line-height:1.22; margin:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
::selection{background:var(--accent-soft);color:var(--accent-ink)}

/* ---------- scrollbar ---------- */
*::-webkit-scrollbar{width:11px;height:11px}
*::-webkit-scrollbar-track{background:transparent}
*::-webkit-scrollbar-thumb{background:var(--line2);border-radius:9px;border:3px solid var(--bg)}
*::-webkit-scrollbar-thumb:hover{background:var(--muted)}

/* ---------- loader ---------- */
.loader{position:fixed;inset:0;background:var(--bg);z-index:999;display:grid;place-items:center;transition:opacity .4s}
.loader.gone{opacity:0;pointer-events:none}
.loader-in{text-align:center;color:var(--muted)}
.spin{width:34px;height:34px;margin:0 auto 14px;border:2px solid var(--line2);border-top-color:var(--accent);border-radius:50%;animation:sp .8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

/* ---------- topbar ---------- */
.topbar{
  position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:12px;
  padding:10px 18px;background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(14px) saturate(1.3);border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand-mark{
  width:34px;height:34px;display:grid;place-items:center;flex:none;
  border-radius:10px;background:linear-gradient(145deg,var(--accent),var(--accent-ink));
  color:#fff;font-family:var(--serif);font-size:14px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 2px 8px -2px color-mix(in srgb,var(--accent) 60%,transparent);
}
.brand-txt{display:flex;flex-direction:column;min-width:0}
.brand-txt strong{font-family:var(--serif);font-size:14.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-txt em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.09em;text-transform:uppercase}
.grow{flex:1}
.icon-btn{
  width:34px;height:34px;flex:none;display:grid;place-items:center;cursor:pointer;
  background:var(--bg2);border:1px solid var(--line);border-radius:9px;font-size:15px;
  transition:.15s
}
.icon-btn:hover{border-color:var(--accent);color:var(--accent)}
.search-trigger{
  display:flex;align-items:center;gap:7px;cursor:pointer;
  background:var(--bg2);border:1px solid var(--line);border-radius:9px;
  padding:7px 11px;color:var(--muted);font-size:13px;transition:.15s
}
.search-trigger:hover{border-color:var(--accent);color:var(--ink)}
kbd{
  font-family:var(--sans);font-size:10.5px;padding:1.5px 5px;border-radius:4px;
  background:var(--bg3);border:1px solid var(--line2);color:var(--muted)
}

/* ---------- layout ---------- */
.shell{display:grid;grid-template-columns:230px 1fr;align-items:start}
.side{
  position:sticky;top:55px;height:calc(100vh - 55px);overflow-y:auto;
  padding:18px 12px 24px;border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:18px
}
.nav-group{display:flex;flex-direction:column;gap:1px}
.nav-label{font-size:10.5px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);padding:0 10px 6px;font-weight:600}
.side a{
  display:flex;align-items:center;gap:10px;padding:7.5px 10px;border-radius:8px;
  font-size:13.5px;color:var(--ink2);transition:.13s;position:relative
}
.side a i{font-style:normal;width:16px;text-align:center;opacity:.55;font-size:13px}
.side a:hover{background:var(--bg3);color:var(--ink)}
.side a.on{background:var(--accent-soft);color:var(--accent-ink);font-weight:600}
.side a.on i{opacity:1}
.pill{margin-left:auto;font-size:10.5px;padding:1px 7px;border-radius:20px;background:var(--bg3);color:var(--muted);font-weight:600}
.pill.hot{background:var(--accent);color:#fff}
.pill:empty{display:none}
.side-foot{margin-top:auto;padding:12px 10px 0;border-top:1px solid var(--line);font-size:11.5px;color:var(--muted);line-height:1.5}

.view{padding:26px 34px 90px;max-width:1180px;min-height:calc(100vh - 55px)}
.scrim{display:none}

@media(max-width:900px){
  .shell{grid-template-columns:1fr}
  .side{
    position:fixed;left:0;top:55px;width:250px;z-index:40;background:var(--bg2);
    transform:translateX(-102%);transition:transform .25s cubic-bezier(.3,.8,.3,1);box-shadow:var(--shadow-lg)
  }
  .side.open{transform:none}
  .scrim{display:block;position:fixed;inset:55px 0 0;background:rgba(0,0,0,.35);opacity:0;pointer-events:none;transition:.25s;z-index:39}
  .scrim.on{opacity:1;pointer-events:auto}
  .view{padding:20px 16px 80px}
  .search-trigger span{display:none}
  .brand-txt em{display:none}
}
@media(min-width:901px){.only-mobile{display:none}}

/* ---------- primitives ---------- */
.card{background:var(--bg2);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.pad{padding:20px 22px}
.hd{margin-bottom:22px}
.hd h1{font-size:30px;margin-bottom:5px}
.hd p{margin:0;color:var(--muted);font-size:14px;max-width:70ch}
.eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:.13em;color:var(--accent);font-weight:700;margin-bottom:7px}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(auto-fit,minmax(290px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(215px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(165px,1fr))}
.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.spacer{height:26px}
.muted{color:var(--muted)}
.tiny{font-size:12px}
hr.sep{border:0;border-top:1px solid var(--line);margin:24px 0}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;cursor:pointer;
  padding:9px 16px;border-radius:9px;border:1px solid var(--line2);background:var(--bg2);
  font-size:13.5px;font-weight:600;transition:.15s;white-space:nowrap
}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-ink);border-color:var(--accent-ink);color:#fff}
.btn.ghost{background:transparent;border-color:transparent;color:var(--muted)}
.btn.ghost:hover{background:var(--bg3);color:var(--ink)}
.btn.sm{padding:6px 11px;font-size:12.5px}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn.wide{width:100%}

.tag{
  display:inline-flex;align-items:center;gap:5px;font-size:11.5px;font-weight:600;
  padding:2.5px 9px;border-radius:20px;background:var(--bg3);color:var(--muted);white-space:nowrap
}
.tag.a{background:var(--accent-soft);color:var(--accent-ink)}
.tag.g{background:var(--green-soft);color:var(--green)}
.tag.y{background:var(--gold-soft);color:var(--gold)}
.tag.r{background:var(--red-soft);color:var(--red)}
.tag.b{background:var(--blue-soft);color:var(--blue)}

.bar{height:6px;border-radius:20px;background:var(--bg3);overflow:hidden}
.bar>i{display:block;height:100%;border-radius:20px;background:var(--accent);transition:width .5s cubic-bezier(.3,.9,.3,1)}
.bar.g>i{background:var(--green)}

.empty{text-align:center;padding:60px 20px;color:var(--muted)}
.empty .big{font-size:40px;opacity:.3;margin-bottom:10px}

/* ---------- art ---------- */
.art{filter:var(--art-filter);opacity:.92;display:block;max-width:100%}
.hero{
  position:relative;overflow:hidden;border-radius:var(--r);border:1px solid var(--line);
  background:linear-gradient(160deg,var(--bg2),var(--bg3));margin-bottom:26px;box-shadow:var(--shadow)
}
.hero-art{width:100%;height:auto;max-height:230px;object-fit:cover;object-position:center 60%;filter:var(--art-filter);opacity:.5}
.hero-txt{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;padding:26px 32px;
  background:linear-gradient(90deg,var(--bg2) 22%,color-mix(in srgb,var(--bg2) 55%,transparent) 62%,transparent)}
.hero-txt h1{font-size:clamp(22px,3.4vw,34px);max-width:16ch;margin-bottom:8px}
.hero-txt p{margin:0;color:var(--muted);font-size:13.5px;max-width:42ch}
@media(max-width:700px){.hero-txt{background:color-mix(in srgb,var(--bg2) 78%,transparent)}}

/* ---------- stat ---------- */
.stat{padding:16px 18px;background:var(--bg2);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.stat .k{font-family:var(--serif);font-size:29px;font-weight:600;line-height:1.1}
.stat .l{font-size:11.5px;color:var(--muted);margin-top:3px;letter-spacing:.02em}
.stat .s{font-size:11.5px;margin-top:9px;color:var(--muted)}

/* ---------- sesión card ---------- */
.ses{
  display:flex;flex-direction:column;background:var(--bg2);border:1px solid var(--line);
  border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);transition:.2s;cursor:pointer
}
.ses:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--line2)}
.ses-top{padding:14px 18px 0;display:flex;align-items:center;gap:8px}
.ses-date{font-size:11px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--accent)}
.ses-body{padding:9px 18px 16px;flex:1;display:flex;flex-direction:column}
.ses-body h3{font-size:16.5px;margin-bottom:6px}
.ses-body .au{font-size:12.5px;color:var(--muted);margin-bottom:9px}
.ses-body .rs{font-size:13px;color:var(--ink2);line-height:1.55;flex:1}
.ses-foot{padding:11px 18px;border-top:1px solid var(--line);display:flex;gap:6px;flex-wrap:wrap;background:var(--bg3)}

/* ---------- prosa ---------- */
.prose{font-size:15px;line-height:1.75;color:var(--ink2);max-width:74ch}
.prose h3{font-size:19px;margin:26px 0 9px;color:var(--ink)}
.prose p{margin:0 0 13px}
.prose ul{margin:0 0 14px;padding-left:20px}
.prose li{margin-bottom:6px}
.prose strong{color:var(--ink);font-weight:650}
.prose em{color:var(--accent-ink)}

/* ---------- tabs ---------- */
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);margin-bottom:22px;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tabs button{
  background:none;border:0;border-bottom:2px solid transparent;padding:10px 14px;cursor:pointer;
  font-size:13.5px;font-weight:600;color:var(--muted);white-space:nowrap;transition:.15s
}
.tabs button:hover{color:var(--ink)}
.tabs button.on{color:var(--accent);border-bottom-color:var(--accent)}

/* ---------- listas de definición ---------- */
.def{padding:14px 16px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--bg2);transition:.15s}
.def:hover{border-color:var(--line2)}
.def dt{font-family:var(--serif);font-size:15.5px;font-weight:600;margin-bottom:4px}
.def dd{margin:0;font-size:13.5px;color:var(--ink2);line-height:1.6}
.def .ctx{margin-top:7px;font-size:12.5px;color:var(--muted);padding-top:7px;border-top:1px dashed var(--line)}

/* ---------- flashcards ---------- */
.fc-stage{perspective:1600px;max-width:660px;margin:0 auto}
.fc{
  position:relative;width:100%;min-height:310px;cursor:pointer;
  transform-style:preserve-3d;transition:transform .55s cubic-bezier(.3,.9,.3,1)
}
.fc.flip{transform:rotateY(180deg)}
.fc-face{
  position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;
  display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;
  padding:38px 34px;border-radius:18px;border:1px solid var(--line);background:var(--bg2);box-shadow:var(--shadow-lg)
}
.fc-face.back{transform:rotateY(180deg);background:linear-gradient(160deg,var(--bg2),var(--accent-soft))}
.fc-q{font-family:var(--serif);font-size:23px;line-height:1.35;max-width:32ch}
.fc-a{font-size:16px;line-height:1.65;max-width:40ch;color:var(--ink2)}
.fc-hint{position:absolute;bottom:16px;left:0;right:0;font-size:11.5px;color:var(--muted);letter-spacing:.04em}
.fc-meta{position:absolute;top:14px;left:16px;right:16px;display:flex;justify-content:space-between;align-items:center}
.fc-grade{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;max-width:660px;margin:18px auto 0}
.fc-grade button{padding:11px 6px;border-radius:10px;border:1px solid var(--line2);background:var(--bg2);cursor:pointer;
  font-size:12.5px;font-weight:600;transition:.15s;display:flex;flex-direction:column;gap:2px;align-items:center}
.fc-grade button span{font-size:10.5px;font-weight:500;color:var(--muted)}
.fc-grade button:hover{transform:translateY(-2px)}
.fc-grade .g0:hover{border-color:var(--red);color:var(--red)}
.fc-grade .g1:hover{border-color:var(--gold);color:var(--gold)}
.fc-grade .g2:hover{border-color:var(--blue);color:var(--blue)}
.fc-grade .g3:hover{border-color:var(--green);color:var(--green)}

/* ---------- quiz ---------- */
.quiz-wrap{max-width:760px;margin:0 auto}
.qbox{padding:26px 28px;border-radius:var(--r);border:1px solid var(--line);background:var(--bg2);box-shadow:var(--shadow)}
.qnum{font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:700;margin-bottom:10px}
.qtext{font-family:var(--serif);font-size:20px;line-height:1.4;margin-bottom:20px}
.opts{display:flex;flex-direction:column;gap:9px}
.opt{
  display:flex;align-items:flex-start;gap:11px;padding:13px 15px;border-radius:11px;cursor:pointer;
  border:1px solid var(--line);background:var(--bg);transition:.14s;font-size:14px;text-align:left;line-height:1.5
}
.opt:hover:not(.locked){border-color:var(--accent);background:var(--bg2)}
.opt .ltr{
  flex:none;width:23px;height:23px;border-radius:7px;display:grid;place-items:center;
  background:var(--bg3);border:1px solid var(--line2);font-size:11.5px;font-weight:700;color:var(--muted)
}
.opt.ok{border-color:var(--green);background:var(--green-soft)}
.opt.ok .ltr{background:var(--green);border-color:var(--green);color:#fff}
.opt.bad{border-color:var(--red);background:var(--red-soft)}
.opt.bad .ltr{background:var(--red);border-color:var(--red);color:#fff}
.opt.locked{cursor:default}
.expl{margin-top:18px;padding:15px 17px;border-radius:11px;border-left:3px solid var(--accent);background:var(--bg3);font-size:13.5px;line-height:1.65}
.expl b{display:block;margin-bottom:4px;font-size:11.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--accent)}
.qbar{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.qbar .bar{flex:1}

/* ---------- timeline ---------- */
.tl{position:relative;padding-left:30px;max-width:840px}
.tl::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--line2),var(--line))}
.tl-item{position:relative;margin-bottom:22px}
.tl-item::before{
  content:"";position:absolute;left:-26px;top:7px;width:9px;height:9px;border-radius:50%;
  background:var(--bg2);border:2px solid var(--accent);box-shadow:0 0 0 3px var(--bg)
}
.tl-year{font-family:var(--serif);font-size:19px;font-weight:600;color:var(--accent);margin-bottom:3px}
.tl-ev{font-size:14.5px;font-weight:600;margin-bottom:4px;line-height:1.45}
.tl-why{font-size:13px;color:var(--muted);line-height:1.6}
.tl-src{font-size:11px;color:var(--muted);margin-top:5px}

/* ---------- búsqueda ---------- */
.modal{position:fixed;inset:0;z-index:100;background:rgba(20,15,8,.42);backdrop-filter:blur(3px);display:flex;justify-content:center;padding:12vh 16px 16px}
.modal-box{width:100%;max-width:620px;background:var(--bg2);border:1px solid var(--line2);border-radius:16px;box-shadow:var(--shadow-lg);overflow:hidden;height:fit-content;max-height:74vh;display:flex;flex-direction:column}
.search-box input{
  width:100%;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--ink);
  padding:17px 20px;font-size:16px;font-family:var(--sans);outline:none
}
.search-results{overflow-y:auto;flex:1;padding:6px}
.sr{display:block;padding:10px 13px;border-radius:9px;cursor:pointer;transition:.1s}
.sr:hover,.sr.sel{background:var(--bg3)}
.sr .t{font-size:14px;font-weight:600;margin-bottom:2px}
.sr .d{font-size:12.5px;color:var(--muted);line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sr .k{font-size:10.5px;text-transform:uppercase;letter-spacing:.09em;color:var(--accent);font-weight:700;margin-bottom:3px}
.sr mark{background:var(--gold-soft);color:var(--ink);border-radius:3px;padding:0 1px}
.search-foot{padding:9px 16px;border-top:1px solid var(--line);font-size:11.5px;color:var(--muted);background:var(--bg3)}

/* ---------- toast ---------- */
.toast{
  position:fixed;left:50%;bottom:26px;transform:translate(-50%,16px);z-index:200;
  padding:11px 20px;border-radius:11px;background:var(--ink);color:var(--bg);font-size:13.5px;font-weight:600;
  box-shadow:var(--shadow-lg);opacity:0;transition:.25s;pointer-events:none
}
.toast.on{opacity:1;transform:translate(-50%,0)}

/* ---------- texto fuente ---------- */
.fulltext{
  font-family:var(--serif);font-size:15.5px;line-height:1.8;color:var(--ink2);
  max-width:72ch;white-space:pre-wrap;word-break:break-word
}
.fulltext .pg{
  display:block;margin:26px 0 12px;font-family:var(--sans);font-size:10.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted);border-top:1px solid var(--line);padding-top:10px
}

/* ---------- misc ---------- */
details.q{border:1px solid var(--line);border-radius:var(--r-sm);background:var(--bg2);margin-bottom:10px;overflow:hidden}
details.q>summary{padding:14px 17px;cursor:pointer;font-weight:600;font-size:14.5px;list-style:none;display:flex;gap:10px;align-items:flex-start;line-height:1.5}
details.q>summary::-webkit-details-marker{display:none}
details.q>summary::before{content:"▸";color:var(--accent);flex:none;transition:.2s;margin-top:1px}
details.q[open]>summary::before{transform:rotate(90deg)}
details.q .body{padding:0 17px 16px 17px;border-top:1px solid var(--line);padding-top:14px;margin:0 0 0 0}

.mapa{display:grid;gap:12px}
.mapa-row{display:grid;grid-template-columns:118px 1fr;gap:14px;align-items:start}
.mapa-k{font-family:var(--serif);font-size:14px;font-weight:600;color:var(--accent);padding-top:12px;text-align:right}
.mapa-v{display:flex;gap:8px;flex-wrap:wrap}
.node{padding:9px 13px;border-radius:9px;border:1px solid var(--line);background:var(--bg2);font-size:13px;box-shadow:var(--shadow);transition:.15s;cursor:pointer}
.node:hover{border-color:var(--accent);transform:translateY(-2px)}
@media(max-width:640px){.mapa-row{grid-template-columns:1fr}.mapa-k{text-align:left;padding-top:0}}

.agenda{display:flex;flex-direction:column;gap:9px}
.ag{display:flex;gap:13px;align-items:center;padding:12px 15px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--bg2)}
.ag.hot{border-color:var(--accent);background:var(--accent-soft)}
.ag .d{font-family:var(--serif);font-size:15px;font-weight:600;flex:none;width:112px}
.ag .w{font-size:13.5px;flex:1}
.ag .b{font-size:11.5px;color:var(--muted);white-space:nowrap}

table.t{width:100%;border-collapse:collapse;font-size:13.5px}
table.t th{text-align:left;font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);padding:8px 10px;border-bottom:1px solid var(--line2);font-weight:700}
table.t td{padding:10px;border-bottom:1px solid var(--line);vertical-align:top}
table.t tr:last-child td{border-bottom:0}

@media print{.topbar,.side,.tabs,.btn{display:none!important}.shell{grid-template-columns:1fr}.view{padding:0}}

/* el atributo hidden debe ganarle a display:flex del modal */
.modal[hidden]{display:none!important}
.toast[hidden]{display:none!important}

/* ---------- arte por sesión ---------- */
.hd-art{position:relative}
.hd-art .emblema{
  position:absolute;right:-6px;top:-26px;width:186px;opacity:.13;pointer-events:none;
  mix-blend-mode:multiply
}
[data-theme="dark"] .hd-art .emblema{mix-blend-mode:screen;opacity:.16}
.hd-art .eyebrow,.hd-art h1,.hd-art p,.hd-art .row{position:relative;z-index:1}
.friso{width:100%;max-width:820px;margin:46px auto 0;opacity:.28;display:block}
@media(max-width:820px){.hd-art .emblema{width:120px;top:-14px;opacity:.09}}

/* ============================================================
   MÓVIL · barra inferior, áreas táctiles y safe-area
   ============================================================ */
:root{ --tabbar-h:56px; --safe-b:env(safe-area-inset-bottom,0px); }

html{ -webkit-text-size-adjust:100%; }
body{ overflow-x:hidden; }
button,a,.opt,.node,.ses,summary{ touch-action:manipulation; }

/* barra de navegación inferior: solo en teléfono */
.tabbar{ display:none; }
@media (max-width:760px){
  .tabbar{
    display:flex; position:fixed; left:0; right:0; bottom:0; z-index:45;
    padding:6px 4px calc(6px + var(--safe-b));
    background:color-mix(in srgb,var(--bg2) 94%,transparent);
    backdrop-filter:blur(16px) saturate(1.3);
    border-top:1px solid var(--line);
  }
  .tabbar a{
    flex:1; display:flex; flex-direction:column; align-items:center; justify-content:center;
    gap:3px; min-height:48px; border-radius:11px; padding:5px 2px;
    font-size:10.5px; font-weight:600; color:var(--muted); letter-spacing:.01em;
    transition:.14s; position:relative;
  }
  .tabbar a i{ font-style:normal; font-size:17px; line-height:1; opacity:.75; }
  .tabbar a.on{ color:var(--accent); background:var(--accent-soft); }
  .tabbar a.on i{ opacity:1; }
  .tabbar a .dot{
    position:absolute; top:3px; right:calc(50% - 20px);
    min-width:16px; height:16px; padding:0 4px; border-radius:9px;
    background:var(--accent); color:#fff; font-size:9.5px; line-height:16px; text-align:center;
  }
  .tabbar a .dot:empty{ display:none; }

  /* el contenido no debe quedar tapado por la barra */
  .view{ padding:16px 16px calc(var(--tabbar-h) + var(--safe-b) + 26px); }
  .side{ padding-bottom:calc(var(--tabbar-h) + var(--safe-b) + 20px); }

  /* cabecera más compacta */
  .topbar{ padding:8px 12px; gap:8px; }
  .brand-mark{ width:30px; height:30px; font-size:12.5px; }
  .brand-txt strong{ font-size:13px; }
  .icon-btn{ width:38px; height:38px; }      /* área táctil cómoda */
  .search-trigger{ padding:9px 11px; }
  .search-trigger kbd{ display:none; }

  /* tipografía y aire */
  .hd h1{ font-size:25px; }
  .hd{ margin-bottom:18px; }
  .pad{ padding:16px 17px; }
  .grid{ gap:11px; }
  .g4{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .stat .k{ font-size:25px; }
  .prose{ font-size:15.5px; line-height:1.72; }
  .spacer{ height:20px; }

  /* la retícula de dos columnas del inicio se apila */
  .view > .grid[style*="1.35fr"]{ grid-template-columns:1fr !important; }

  /* botones y opciones: mínimo 46 px de alto */
  .btn{ padding:12px 17px; font-size:14px; }
  .btn.sm{ padding:9px 13px; }
  .opt{ padding:15px 15px; font-size:14.5px; }
  .tabs button{ padding:12px 13px; }
  details.q > summary{ padding:15px 16px; }

  /* flashcards a pantalla de teléfono */
  .fc{ min-height:clamp(290px,50vh,360px); }
  .fc-face{ padding:34px 22px; overflow-y:auto; }
  .fc-q{ font-size:20px; }
  .fc-a{ font-size:15.5px; }
  .fc-grade{ grid-template-columns:repeat(2,1fr); gap:9px; }
  .fc-grade button{ padding:14px 6px; }

  /* quiz */
  .qbox{ padding:19px 17px; }
  .qtext{ font-size:18px; }

  /* búsqueda a pantalla completa */
  .modal{ padding:0; }
  .modal-box{ max-width:none; max-height:none; height:100%; border-radius:0; border:0; }
  .search-box input{ padding:16px 17px; font-size:16px; }  /* 16px evita el zoom de iOS */
  .search-foot{ padding-bottom:calc(9px + var(--safe-b)); }

  /* arte más discreto */
  .hero-art{ max-height:150px; }
  .hero-txt{ padding:20px 18px; }
  .friso{ margin-top:30px; opacity:.22; }

  /* línea de tiempo y mapa */
  .tl{ padding-left:24px; }
  .tl::before{ left:6px; }
  .tl-item::before{ left:-22px; }
}

/* teléfonos estrechos */
@media (max-width:380px){
  .g4{ grid-template-columns:1fr; }
  .tabbar a{ font-size:9.5px; }
  .hd h1{ font-size:23px; }
}

/* pantallas bajas en horizontal: que la tarjeta no desborde */
@media (max-height:520px){
  .fc{ min-height:250px; }
  .fc-face{ padding:22px 20px; }
}

/* --- correcciones de la pasada de móvil --- */
@media (max-width:760px){
  /* el encabezado deja de superponer texto sobre la imagen: el arte pasa al fondo */
  .hero{ position:relative; display:block; }
  .hero-art{
    position:absolute; inset:0; width:100%; height:100%;
    max-height:none; object-fit:cover; object-position:center 65%; opacity:.16;
  }
  .hero-txt{ position:static; background:none; padding:22px 18px; }
  .hero-txt h1{ max-width:none; }
  .hero-txt p{ max-width:none; }

  /* lupa en el botón de búsqueda, que si no queda una píldora vacía */
  .search-trigger::before{ content:"⌕"; font-size:21px; line-height:1; margin:-2px 0; }
}
/* dos columnas de estadísticas hasta pantallas muy estrechas */
@media (max-width:380px){ .g4{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media (max-width:330px){ .g4{ grid-template-columns:1fr; } }

/* la tarjeta un poco más baja para que las 4 notas quepan sin desplazar */
@media (max-width:760px){
  .fc{ min-height:clamp(240px,40vh,310px); }
  .fc-face{ padding:28px 20px; }
  .fc-grade{ margin-bottom:6px; }
}

/* --- desbordes horizontales ---
   Una pista de grid mide por defecto al contenido mínimo, así que las pestañas
   y las tablas con scroll propio estiraban la columna más allá de la pantalla. */
.shell{ grid-template-columns:230px minmax(0,1fr); }
.view{ min-width:0; }
.tabs, .fulltext, .prose, .qbox, .def, .card{ min-width:0; }
.fulltext{ overflow-wrap:anywhere; }
@media (max-width:900px){ .shell{ grid-template-columns:minmax(0,1fr); } }

/* cifras alineadas en columnas y en las estadísticas */
table.t td, table.t th, .stat .k, .tl-year, .qbar, .ag .d{ font-variant-numeric:tabular-nums; }
h1,h2,h3{ text-wrap:balance; }
:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; border-radius:6px; }
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{ animation-duration:.001ms !important; transition-duration:.001ms !important; }
  .fc{ transition:none; }
}

/* ============================================================
   Tema del sistema.
   El visor puede no marcar data-theme (ajuste "sistema"): en ese caso
   manda prefers-color-scheme, salvo que el lector haya elegido claro.
   ============================================================ */
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#13110e; --bg2:#1b1815; --bg3:#232019;
    --ink:#ece5d9; --ink2:#c9bfb0; --muted:#948a7c;
    --line:#2f2b24; --line2:#3d382f;
    --accent:#d9944f; --accent-soft:#332318; --accent-ink:#e8ab6b;
    --green:#6fb39c; --green-soft:#17281f;
    --gold:#cea54a; --gold-soft:#2b2312;
    --red:#d97b74; --red-soft:#2d1818;
    --blue:#7ea4d8; --blue-soft:#161f2e;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -12px rgba(0,0,0,.6);
    --shadow-lg:0 2px 4px rgba(0,0,0,.5),0 24px 56px -20px rgba(0,0,0,.8);
    --art-filter:invert(1) hue-rotate(180deg) saturate(.8) brightness(1.15);
    color-scheme:dark;
  }
}

/* ============================================================
   Figuras y diagramas
   Todo se dibuja con currentColor salvo el trazo que carga el
   argumento, que usa el acento. Así funcionan los dos temas.
   ============================================================ */
.figura{
  margin:0 0 26px; padding:18px 18px 14px;
  background:var(--bg2); border:1px solid var(--line); border-radius:var(--r);
  box-shadow:var(--shadow);
}
.figura-lienzo{ color:var(--ink2); }
.figura-lienzo.ancha{ overflow-x:auto; overscroll-behavior-x:contain; }
.figura-lienzo.ancha::-webkit-scrollbar{ height:7px; }
.dgm{ display:block; width:100%; height:auto; max-width:820px; margin:0 auto; }
.dgm-ancha{ min-width:600px; max-width:1340px; }
.figura figcaption{
  margin-top:12px; padding-top:11px; border-top:1px solid var(--line);
  font-size:12.5px; line-height:1.55; color:var(--muted);
}
.figura figcaption strong{ color:var(--ink); font-family:var(--serif); font-size:14px; }

/* trazos y texto */
.dgm .dr{ stroke:currentColor; stroke-width:1; opacity:.3; fill:none; }
.dgm .dash{ stroke-dasharray:5 5; }
.dgm .dpath{ stroke:var(--accent); stroke-width:2.5; fill:none; stroke-linejoin:round; stroke-linecap:round; }
.dgm .dpath.thin{ stroke-width:1.4; opacity:.55; }
.dgm .dfill{ fill:var(--accent); }
.dgm text{ font-family:var(--sans); fill:currentColor; }
.dgm .dl{ font-size:13px; }
.dgm .dl-t{ font-weight:600; fill:var(--ink); }
.dgm .dl-s{ font-size:11.5px; opacity:.72; }
.dgm .dl-h{ font-family:var(--serif); font-size:17px; font-weight:600; fill:var(--ink); }
.dgm .dl-eje{ font-size:10px; font-weight:700; letter-spacing:.11em; opacity:.6; }
.dgm .dsig{ font-family:var(--serif); font-size:30px; font-weight:700; fill:var(--accent); }

/* nodos, barras y cajas */
.dgm .dn{ fill:var(--bg2); stroke:currentColor; stroke-width:1.6; opacity:.75; }
.dgm .dn-hoy{ fill:var(--accent); stroke:none; }
.dgm .dn-ac{ fill:var(--bg2); stroke:var(--accent); stroke-width:2.5; }
.dgm .dbar{ fill:currentColor; opacity:.22; }
.dgm .dbar-ac{ fill:var(--accent); opacity:.85; }
.dgm .dfase{ fill:currentColor; opacity:.07; stroke:currentColor; stroke-opacity:.18; }
.dgm .dcaja{ fill:none; stroke:currentColor; stroke-width:1; stroke-opacity:.3; }
.dgm .dcaja-ac{ fill:var(--accent-soft); stroke:var(--accent); stroke-width:1.2; stroke-opacity:.5; }

@media (max-width:760px){
  .figura{ padding:14px 13px 12px; }
  .figura figcaption{ font-size:12px; }
  .dgm .dl{ font-size:14px; }          /* al reducirse el lienzo, el texto necesita más cuerpo */
  .dgm .dl-s{ font-size:12.5px; }
}
.pista-scroll{
  font-size:11px; color:var(--muted); text-align:right; margin:-4px 0 6px;
  letter-spacing:.04em;
}
@media (min-width:761px){ .pista-scroll{ display:none; } }

/* polaridad en los gráficos: una caída no puede parecerse a un crecimiento */
.dgm .dbar-pos{ fill:var(--green); opacity:.85; }
.dgm .dbar-neg{ fill:var(--red);   opacity:.85; }