/* Revista 41 Años · Unión Agronegocios — hojeador */

@font-face{font-family:"Archivo";src:url(../assets/fonts/archivo.woff2) format("woff2");font-weight:400 900;font-stretch:62% 125%;font-display:swap}
@font-face{font-family:"Source Serif 4";src:url(../assets/fonts/serif-italic.woff2) format("woff2");font-weight:400 600;font-style:italic;font-display:swap}

:root{
  --ink:#161616;
  --ink-2:#202020;
  --ink-3:#3a3a3a;
  --red:#e20613;
  --red-2:#b8050f;
  --gold:#ffffff;
  --gold-2:#e20613;
  --txt:#f5f5f5;
  --muted:#b5b5b5;
  --line:rgba(255,255,255,.1);
  --display:"Archivo",system-ui,sans-serif;
  --serif:"Source Serif 4",Georgia,serif;
  --top:58px;
  --bottom:66px;
}
*,*::before,*::after{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--ink);color:var(--txt);font-family:var(--display);overflow:hidden;-webkit-tap-highlight-color:transparent}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:0}
a{color:inherit}
[hidden]{display:none!important}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px}
svg{width:20px;height:20px;flex:none}



/* ---------- visor ---------- */
.app{position:fixed;inset:0;display:flex;flex-direction:column;background:
  radial-gradient(70% 60% at 50% 50%,#2e2e2e 0%,var(--ink) 75%)}
.top{height:var(--top);flex:none;display:flex;align-items:center;gap:10px;padding:0 14px;border-bottom:1px solid var(--line);background:rgba(16,16,16,.72);backdrop-filter:blur(8px)}
.top__mid{flex:1;min-width:0;text-align:center}
.top__mid{display:flex;align-items:center;justify-content:center;gap:10px}
.top__mid img{height:36px;width:auto;margin:0}
.top__mid p{margin:0!important}
.top__mid p{margin:4px 0 0;font-size:11px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top__act{display:flex;gap:6px}
.ibtn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:40px;min-width:40px;padding:0 12px;border-radius:999px;border:1px solid rgba(255,255,255,.16);font-size:13px;font-weight:700;letter-spacing:.04em;text-decoration:none;transition:.2s}
.ibtn:hover{border-color:var(--gold);color:var(--gold)}
.ibtn--gold{background:var(--red);border-color:var(--red);color:#fff}
.ibtn--gold:hover{background:#f5212d;color:#fff}
@media (max-width:640px){.ibtn span{display:none}.ibtn{padding:0}.ibtn--hide-s{display:none}}

.stage{flex:1;min-height:0;position:relative;display:flex;align-items:center;gap:8px;padding:16px 10px}
.book-zone{flex:1;height:100%;min-width:0;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center}
.book{margin:0 auto}
.book .stf__parent{margin:0 auto}
.book .hoja{background:#fff}
.book .hoja img{width:100%;height:100%;object-fit:cover;user-select:none;-webkit-user-drag:none}
.loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:12px;color:var(--muted);font-size:14px}
.spin{width:20px;height:20px;border-radius:50%;border:2px solid var(--ink-3);border-top-color:var(--gold);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.arrow{flex:none;width:48px;height:48px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.06);border:1px solid var(--line);transition:.2s}
.arrow:hover:not(:disabled){background:var(--red);color:#fff;border-color:var(--red)}
.arrow:disabled{opacity:.25;cursor:default}
@media (max-width:899px){.arrow{display:none}.stage{padding:10px 8px}}
.zoom-btn{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;border-radius:999px;background:var(--red);color:#fff;font-weight:800;font-size:13px;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap;box-shadow:0 8px 24px -10px rgba(226,6,19,.7)}
.zoom-btn:hover{background:#f5212d}

.bottom{flex:none;border-top:1px solid var(--line);background:rgba(16,16,16,.72)}
.prog{height:3px;background:var(--ink-3)}
.prog div{height:100%;width:0;background:linear-gradient(90deg,var(--gold-2),var(--gold));transition:width .4s}
.bottom__row{height:calc(var(--bottom) - 3px);display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 14px;padding-bottom:env(safe-area-inset-bottom)}
.bottom__mid{display:flex;align-items:center;gap:14px;min-width:0}
.counter{margin:0;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.counter b{color:var(--txt)}
.round{width:44px;height:44px;flex:none;border-radius:50%;display:grid;place-items:center;border:1px solid rgba(255,255,255,.18);transition:.2s}
.round:hover:not(:disabled){border-color:var(--gold);color:var(--gold)}
.round:disabled{opacity:.3;cursor:default}
@media (min-width:900px){.bottom .round{visibility:hidden}}
@media (max-width:380px){.zoom-btn{padding:0 14px;font-size:12px}.bottom__mid{gap:10px}}

/* ---------- índice ---------- */
.index{position:fixed;inset:0;z-index:40;display:flex}
.index__bg{flex:1;background:rgba(0,0,0,.6)}
.index__panel{width:min(460px,100%);height:100%;overflow-y:auto;background:var(--ink-2);padding:18px 18px 30px;animation:slideIn .28s cubic-bezier(.2,.7,.2,1)}
@keyframes slideIn{from{transform:translateX(-100%)}to{transform:none}}
.index__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.index__head h2{margin:0;font-weight:900;font-stretch:72%;font-size:34px;letter-spacing:-.01em;color:#fff}
.index__head h2::after{content:"";display:block;width:38px;height:4px;margin-top:4px;border-radius:2px;background:var(--red)}
.search{display:flex;align-items:center;gap:10px;height:48px;padding:0 14px;border-radius:12px;background:var(--ink);border:1px solid var(--line)}
.search:focus-within{border-color:var(--gold)}
.search svg{color:var(--muted)}
.search input{flex:1;min-width:0;height:100%;border:0;background:none;color:var(--txt);font:inherit;font-size:15px;outline:none}
.search input::placeholder{color:#7d746c}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 4px}
.chip{padding:8px 13px;border-radius:999px;background:var(--ink-3);font-size:13px;font-weight:700}
.chip:hover{background:var(--red);color:#fff}
.info{min-height:18px;margin:10px 0;font-size:13px;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.thumb{display:flex;flex-direction:column;gap:6px;text-align:left}
.thumb img{width:100%;aspect-ratio:1240/1605;object-fit:cover;border-radius:4px;border:2px solid transparent;transition:.2s}
.thumb:hover img{border-color:rgba(241,169,33,.55)}
.thumb.on img{border-color:var(--red)}
.thumb b{font-size:11px;letter-spacing:.06em;color:var(--gold)}
.thumb span{font-size:12px;line-height:1.25;font-weight:600}
.thumb mark{background:none;color:var(--gold)}
.thumb small{display:block;font-family:var(--serif);font-style:italic;font-size:12px;line-height:1.35;color:var(--muted)}

/* ---------- zoom ---------- */
.zoom{position:fixed;inset:0;z-index:50;display:flex;flex-direction:column;background:#0b0a0a}
.zoom__top{height:var(--top);flex:none;display:flex;align-items:center;gap:8px;padding:0 12px;border-bottom:1px solid var(--line)}
.zoom__top p{flex:1;margin:0;text-align:center;font-size:13px;font-weight:700;letter-spacing:.06em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.zoom__top p span{color:var(--gold)}
.zoom__canvas{flex:1;min-height:0;overflow:auto;display:flex;touch-action:pan-x pan-y;cursor:grab;overscroll-behavior:contain}
.zoom__canvas.drag{cursor:grabbing}
.zoom__canvas img{aspect-ratio:1240/1605;margin:auto;max-width:none;height:auto;user-select:none;box-shadow:0 20px 60px rgba(0,0,0,.6);background:#fff}
.zoom__help{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);margin:0;padding:10px 16px;border-radius:999px;background:rgba(0,0,0,.75);font-size:13px;font-weight:600;white-space:nowrap;pointer-events:none;transition:opacity .5s}


/* ---------- extras 41 años ---------- */
@media (max-width:420px){.zoom-btn{padding:0 12px;font-size:11.5px;gap:6px}.bottom__mid{gap:8px}.bottom__row{padding:0 10px}}

/* ===== Tono de la revista: rojo Unión, blanco, gris claro y carbón (sin amarillo) ===== */
:focus-visible{outline-color:#fff}
.prog div{background:var(--red)}
.spin{border-top-color:var(--red)}


/* visor: carbón neutro para que resalten las páginas */
.ibtn:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}
.round:hover:not(:disabled){border-color:var(--red);color:#fff;background:var(--red)}
.zoom__top p span{color:#ff5a62}

/* índice: claro como las páginas interiores */
.index__panel{background:#f2f2f2;color:#1a1a1a}
.index__panel .ibtn{border-color:#cfcfcf;color:#1a1a1a}
.index__panel .ibtn:hover{border-color:var(--red);color:var(--red);background:none}
.index__head h2{color:#1a1a1a}
.search{background:#fff;border-color:#d6d6d6}
.search:focus-within{border-color:var(--red)}
.search svg{color:#888}
.search input{color:#1a1a1a}
.search input::placeholder{color:#999}
.chip{background:#fff;border:1px solid #dcdcdc;color:#1a1a1a}
.chip:hover{background:var(--red);border-color:var(--red);color:#fff}
.info{color:#666}
.thumb img{box-shadow:0 2px 8px rgba(0,0,0,.15)}
.thumb:hover img{border-color:rgba(226,6,19,.5)}
.thumb b{color:var(--red)}
.thumb small{color:#666}