/* La matriz · sitio de la serie. Rejilla de celdas como motivo; tinta de cada libro + ámbar de la serie. */
@font-face{font-family:"Inter Display";src:url(fonts/InterDisplay-Black.woff) format("woff");font-weight:900;font-display:swap}
@font-face{font-family:"Inter Display";src:url(fonts/InterDisplay-ExtraBold.woff) format("woff");font-weight:800;font-display:swap}
@font-face{font-family:"Inter";src:url(fonts/Inter-Regular.woff) format("woff");font-weight:400;font-display:swap}
@font-face{font-family:"Inter";src:url(fonts/Inter-SemiBold.woff) format("woff");font-weight:600;font-display:swap}
@font-face{font-family:"Inter";src:url(fonts/Inter-Bold.woff) format("woff");font-weight:700;font-display:swap}
@font-face{font-family:"Lora";src:url(fonts/Lora.woff) format("woff");font-weight:400 700;font-display:swap}
@font-face{font-family:"Lora";src:url(fonts/Lora-Italic.woff) format("woff");font-weight:400 700;font-style:italic;font-display:swap}

:root{
  --ink:#13304A;            /* azul de La matriz de las dietas */
  --ink-2:#1C4466;
  --amber:#E8A33D;          /* ámbar de la serie */
  --amber-ink:#8A5A12;      /* ámbar legible sobre papel */
  --paper:#F5F7F9;
  --surface:#FFFFFF;
  --text:#15222E;
  --muted:#556574;
  --line:#D8E0E7;
  --cell-a:#3F7F8E; --cell-b:#5A8FA6; --cell-c:#4C9A9A;
  --ev-alta:#2E8A68; --ev-media:#C58A22; --ev-baja:#6D8296; --ev-nula:#A8B5C1; --ev-ref:#B5483A;
  --danger:#B5483A; --danger-bg:#FBEDEA;
  --ok-bg:#E9F4EF;
  --display:"Inter Display","Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --ui:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --read:"Lora",Georgia,"Times New Roman",serif;
  --wrap:1120px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#0C1824;--surface:#11222F;--text:#E6EDF3;--muted:#9FB0BF;--line:#22384A;
  --ink:#0E2436;--ink-2:#173550;--amber-ink:#F0B85E;--danger-bg:#3A1C17;--ok-bg:#12302A;
  --ev-baja:#8DA2B6;--ev-nula:#56697A;--danger:#E07A69;--ev-ref:#E07A69;color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#0C1824;--surface:#11222F;--text:#E6EDF3;--muted:#9FB0BF;--line:#22384A;
  --ink:#0E2436;--ink-2:#173550;--amber-ink:#F0B85E;--danger-bg:#3A1C17;--ok-bg:#12302A;
  --ev-baja:#8DA2B6;--ev-nula:#56697A;--danger:#E07A69;--ev-ref:#E07A69;color-scheme:dark}
.book-entrenamiento{--ink:#4A1727;--ink-2:#6A2338}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--text);font:400 1.0625rem/1.6 var(--ui)}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;background:var(--amber);color:#111;padding:8px 12px;z-index:50}

/* Cabecera */
.top{background:var(--ink);color:#fff;position:sticky;top:env(safe-area-inset-top,0px);z-index:20}
@media (max-width:700px){.top{position:static}.nav{font-size:.85rem;gap:2px 14px}}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:21;background:var(--ink)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:12px;flex-wrap:wrap}
.brand{display:flex;align-items:baseline;gap:10px;text-decoration:none}
.brand b{font:900 1.35rem/1 var(--display);letter-spacing:.01em}
.brand span{font:600 .78rem/1 var(--ui);color:var(--amber);letter-spacing:.08em;text-transform:uppercase}
.nav{display:flex;gap:4px 18px;flex-wrap:wrap;font:600 .92rem/1.2 var(--ui)}
.nav a{text-decoration:none;opacity:.88;padding-block:4px;border-bottom:2px solid transparent}
.nav a:hover,.nav a[aria-current]{opacity:1;border-color:var(--amber)}

/* Tipografía */
h1,h2,h3{font-family:var(--display);text-wrap:balance;line-height:1.05;margin:0}
h1{font-weight:900;font-size:clamp(2.2rem,5.5vw,4rem);letter-spacing:-.01em}
h2{font-weight:900;font-size:clamp(1.6rem,3.4vw,2.4rem)}
h3{font-weight:800;font-size:1.25rem;line-height:1.2}
.eyebrow{font:700 .78rem/1.2 var(--ui);letter-spacing:.14em;text-transform:uppercase;color:var(--amber-ink)}
.on-ink .eyebrow{color:var(--amber)}
.lead{font:400 1.2rem/1.55 var(--read);color:var(--muted);max-width:62ch}
.prose{font:400 1.08rem/1.75 var(--read);max-width:68ch}
.prose p,.prose ul,.prose ol{margin:0 0 1.1em}
.prose h2{margin:1.8em 0 .6em;font-size:1.6rem}
.prose h3{margin:1.4em 0 .4em}
.prose li{margin-bottom:.35em}
.prose blockquote{margin:1.4em 0;padding:.2em 0 .2em 1.1em;border-left:4px solid var(--amber);font-style:italic}
sup.cite a{font:600 .7em var(--ui);color:var(--amber-ink);text-decoration:none}
.muted{color:var(--muted)}
.small{font-size:.88rem}
.num{font-variant-numeric:tabular-nums}

/* Bandas */
.band{padding-block:clamp(48px,7vw,88px)}
.band.tight{padding-block:40px}
.on-ink{background:var(--ink);color:#fff}
.on-ink .lead{color:#C9D6E2}
.split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:clamp(28px,5vw,64px);align-items:center}
@media (max-width:860px){.split{grid-template-columns:minmax(0,1fr)}}
.stack{display:grid;gap:18px}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}

/* Botones */
.btn{display:inline-flex;align-items:center;gap:8px;font:700 1rem/1 var(--ui);padding:14px 20px;border-radius:999px;text-decoration:none;border:2px solid transparent;cursor:pointer}
.btn-amber{background:var(--amber);color:#1B1305}
.btn-amber:hover{filter:brightness(1.06)}
.btn-ghost{border-color:currentColor}
.btn small{font-weight:600;opacity:.75}

/* Portada 3D */
.bookshot{perspective:1400px;display:flex;justify-content:center}
.bookshot .b{position:relative;width:min(320px,70vw);transform:rotateY(-18deg) rotateX(3deg);transform-style:preserve-3d;box-shadow:24px 30px 50px rgba(0,0,0,.35);border-radius:2px 6px 6px 2px}
.bookshot .b::before{content:"";position:absolute;inset:0 auto 0 0;width:14px;background:linear-gradient(90deg,rgba(255,255,255,.25),rgba(0,0,0,.25));z-index:1}
.bookshot img{border-radius:2px 6px 6px 2px}
@media (prefers-reduced-motion:no-preference){.bookshot .b{transition:transform .5s}.bookshot:hover .b{transform:rotateY(-8deg) rotateX(2deg)}}

/* La matriz (rejilla de 80 celdas) */
.matrix{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:clamp(4px,.8vw,8px);max-width:560px}
.matrix a{aspect-ratio:1;border-radius:22%;display:grid;place-items:center;text-decoration:none;font:700 clamp(.6rem,1.4vw,.82rem)/1 var(--ui);font-variant-numeric:tabular-nums;color:rgba(255,255,255,.92);position:relative;transition:transform .15s}
.matrix a:hover,.matrix a:focus-visible{transform:scale(1.12);z-index:2}
.matrix a[data-tone="0"]{background:#3F7F8E}.matrix a[data-tone="1"]{background:#5A8FA6}.matrix a[data-tone="2"]{background:#4C9A9A}
.matrix a[data-ev="alta"]{background:var(--ev-alta)}
.matrix a[data-ev="media"]{background:var(--ev-media);color:#241703}
.matrix a[data-ev="baja"]{background:var(--ev-baja)}
.matrix a[data-ev="nula"]{background:var(--ev-nula);color:#14212C}
.matrix a[data-ev="ref"]{background:var(--ev-ref)}
.matrix a.warn::after{content:"";position:absolute;top:10%;right:10%;width:22%;height:22%;border-radius:50%;background:var(--amber);box-shadow:0 0 0 2px var(--ink)}
.matrix-tip{min-height:3.2em;font:600 .95rem/1.4 var(--ui);margin-top:14px}
.legend{display:flex;flex-wrap:wrap;gap:8px 16px;font:600 .82rem/1.2 var(--ui);margin-top:10px}
.legend i{display:inline-block;width:12px;height:12px;border-radius:3px;margin-right:6px;vertical-align:-1px}
.on-ink .legend{color:#C9D6E2}

/* Cifras */
.figures{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.figures div{background:var(--surface);padding:22px 18px}
.figures b{display:block;font:900 2.4rem/1 var(--display);color:var(--ink);font-variant-numeric:tabular-nums}
:root[data-theme="dark"] .figures b{color:var(--amber)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .figures b{color:var(--amber)}}
.figures span{font:600 .88rem/1.35 var(--ui);color:var(--muted)}

/* Ficha técnica */
.ficha{background:var(--surface);border:1px solid var(--line);border-top:6px solid var(--ink);border-radius:4px}
:root[data-theme="dark"] .ficha{border-top-color:var(--amber)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .ficha{border-top-color:var(--amber)}}
.ficha h2{font-size:.85rem;letter-spacing:.14em;text-transform:uppercase;padding:16px 20px 0;font-family:var(--ui);font-weight:700}
.ficha dl{margin:0;display:grid;grid-template-columns:minmax(120px,190px) minmax(0,1fr)}
.ficha dt,.ficha dd{margin:0;padding:12px 20px;border-top:1px solid var(--line)}
.ficha dt{font:700 .85rem/1.35 var(--ui);color:var(--muted)}
.ficha dd{font:400 .98rem/1.5 var(--ui)}
@media (max-width:560px){.ficha dl{grid-template-columns:minmax(0,1fr)}.ficha dd{border-top:0;padding-top:0}}
.dots{letter-spacing:.12em;color:var(--ink);font-weight:700}
:root[data-theme="dark"] .dots{color:var(--amber)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .dots{color:var(--amber)}}
.pill{display:inline-block;font:700 .78rem/1 var(--ui);letter-spacing:.06em;text-transform:uppercase;padding:6px 10px;border-radius:999px;color:#fff;white-space:nowrap}
.pill.alta{background:var(--ev-alta)}.pill.media{background:var(--ev-media);color:#241703}.pill.baja{background:var(--ev-baja)}.pill.nula{background:var(--ev-nula);color:#14212C}.pill.ref{background:var(--ev-ref)}
.alert{background:var(--danger-bg);border-left:6px solid var(--danger);padding:16px 20px;border-radius:4px}
.alert b{color:var(--danger);font-family:var(--ui)}
.note{background:var(--surface);border:1px solid var(--line);padding:16px 20px;border-radius:4px;font:400 .92rem/1.55 var(--ui);color:var(--muted)}
.header-line{font:600 .9rem/1.5 var(--ui);color:var(--muted)}

/* Tablas */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:4px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font:400 .95rem/1.4 var(--ui)}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:var(--ink);color:#fff;font-weight:700;font-size:.82rem;letter-spacing:.04em;position:sticky;top:0}
tbody tr:hover{background:var(--paper)}
td a{text-decoration-color:var(--amber);text-underline-offset:3px}
tr.fam td{background:var(--paper);font:800 .78rem/1 var(--ui);letter-spacing:.12em;text-transform:uppercase;color:var(--amber-ink)}

/* Filtros */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
.filters label{display:grid;gap:4px;font:600 .8rem/1 var(--ui);color:var(--muted)}
.filters select,.filters input{font:400 1rem var(--ui);padding:9px 10px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--text);min-width:0;max-width:100%}

/* Tarjetas de libro / artículo */
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:22px;display:grid;gap:10px;align-content:start;text-decoration:none}
a.card:hover{border-color:var(--amber)}
.card p{margin:0;color:var(--muted);font-size:.95rem}
.bookcard{display:grid;grid-template-columns:120px minmax(0,1fr);gap:20px;align-items:start}
.bookcard img{box-shadow:6px 8px 18px rgba(0,0,0,.25);border-radius:2px}
.tag{font:700 .72rem/1 var(--ui);letter-spacing:.1em;text-transform:uppercase;color:var(--amber-ink)}

/* Lista de objetivos */
.goal{border-top:1px solid var(--line);padding-block:28px}
.goal ol{margin:0;padding:0;list-style:none;display:grid;gap:6px}
.goal li{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:12px;align-items:center;padding:8px 0;border-bottom:1px dashed var(--line)}
@media (max-width:520px){.goal li{grid-template-columns:minmax(0,1fr) auto}.goal li .dots{display:none}}

/* Formulario */
.form{display:grid;gap:12px;max-width:520px}
.form input[type=email]{font:400 1rem var(--ui);padding:14px 16px;border-radius:999px;border:2px solid var(--line);background:var(--surface);color:var(--text);width:100%}
.form .check{display:flex;gap:10px;align-items:flex-start;font-size:.85rem;line-height:1.4}
.on-ink .form .check a{color:var(--amber)}

/* Pie */
.foot{background:var(--ink);color:#C9D6E2;font-size:.9rem}
.foot .wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:28px;padding-block:44px}
.foot a{color:#fff;text-decoration:none}.foot a:hover{text-decoration:underline}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.foot h4{font:700 .78rem/1 var(--ui);letter-spacing:.14em;text-transform:uppercase;color:var(--amber);margin:0 0 12px}
.crumbs{font:600 .85rem/1.4 var(--ui);color:var(--muted);margin-bottom:18px}
.crumbs a{color:inherit}
.disclaimer{font:400 .85rem/1.5 var(--ui);color:var(--muted);border-top:1px solid var(--line);padding-top:16px;margin-top:32px}
.sources{font:400 .85rem/1.5 var(--ui);color:var(--muted);padding-left:0;list-style:none;display:grid;gap:8px}
.sources li{overflow-wrap:anywhere}
.sources a{color:var(--text)}
.cta-book{display:grid;grid-template-columns:110px minmax(0,1fr);gap:20px;align-items:center;background:var(--ink);color:#fff;border-radius:6px;padding:22px}
.cta-book p{margin:0 0 12px;color:#C9D6E2}
@media (max-width:480px){.cta-book{grid-template-columns:minmax(0,1fr)}.cta-book img{width:110px}}
.two-col{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px}
@media (max-width:640px){.two-col{grid-template-columns:minmax(0,1fr)}}
.box{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:18px 20px}
.box h3{font-size:1rem;margin-bottom:8px}
.box.yes{background:var(--ok-bg)}
.box p{margin:0}

/* Navegación de cada libro (color propio) */
.book-dietas{--book:#1C4466}
.book-entrenamiento{--book:#6A2338}
.booknav{background:var(--book,var(--ink-2));color:#fff;border-top:1px solid rgba(255,255,255,.12)}
.booknav .wrap{display:flex;align-items:center;gap:8px 22px;flex-wrap:wrap;padding-block:10px}
.booknav-title{text-decoration:none;font:800 1rem/1.1 var(--display);display:flex;flex-direction:column;gap:2px}
.booknav-title span{font:700 .68rem/1 var(--ui);letter-spacing:.14em;text-transform:uppercase;color:var(--amber)}
.booknav-links{display:flex;gap:4px 18px;flex-wrap:wrap;font:600 .9rem/1.2 var(--ui)}
.booknav-links a{text-decoration:none;opacity:.85;padding-block:4px;border-bottom:2px solid transparent}
.booknav-links a:hover,.booknav-links a[aria-current]{opacity:1;border-color:var(--amber)}
.booknav-buy{margin-left:auto;padding:9px 16px;font-size:.88rem}
.bookcard.book-entrenamiento .tag{color:#B4566E}
/* Estantería de la portada */
.shelf{display:flex;justify-content:center;align-items:flex-end;padding:20px 0;perspective:1400px}
.shelf-book{width:min(240px,42vw);margin-left:calc(var(--i) * -40px);transform:rotateY(-14deg) translateY(calc(var(--i) * 18px));box-shadow:20px 26px 44px rgba(0,0,0,.4);border-radius:2px 6px 6px 2px;position:relative;z-index:calc(10 - var(--i))}
.shelf-book img{border-radius:2px 6px 6px 2px}
@media (prefers-reduced-motion:no-preference){.shelf-book{transition:transform .4s}.shelf-book:hover{transform:rotateY(-4deg) translateY(-6px)}}

/* Aviso de cookies */
.consent{position:fixed;left:max(16px,env(safe-area-inset-left,0px));right:max(16px,env(safe-area-inset-right,0px));bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:60;max-width:720px;margin:0 auto;background:var(--surface);color:var(--text);border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 40px rgba(0,0,0,.25);padding:16px 18px;display:flex;gap:14px;align-items:center;flex-wrap:wrap;font:400 .92rem/1.5 var(--ui)}
.consent p{margin:0;flex:1 1 320px}
.consent-btns{display:flex;gap:8px}
.consent .btn{padding:10px 16px;font-size:.9rem}
.consent .btn-ghost{color:var(--text)}