@font-face{font-family:"Barlow Condensed";font-weight:600;font-display:swap;src:url(fonts/barlow-condensed-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Barlow Condensed";font-weight:700;font-display:swap;src:url(fonts/barlow-condensed-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"Barlow Condensed";font-weight:800;font-display:swap;src:url(fonts/barlow-condensed-latin-800-normal.woff2) format("woff2")}
@font-face{font-family:"Barlow";font-weight:400;font-display:swap;src:url(fonts/barlow-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Barlow";font-weight:500;font-display:swap;src:url(fonts/barlow-latin-500-normal.woff2) format("woff2")}
@font-face{font-family:"Barlow";font-weight:600;font-display:swap;src:url(fonts/barlow-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Barlow";font-weight:700;font-display:swap;src:url(fonts/barlow-latin-700-normal.woff2) format("woff2")}

:root{
  --navy:#0E2A47; --navy-2:#143a60; --navy-ink:#0A1F36;
  --orange:#F26A1B; --orange-ink:#C24E0C; --green:#1F7A5A;
  --bg:#F6F4EF; --surface:#FFFFFF; --surface-2:#EEEBE3; --line:#DED9CD;
  --ink:#14202E; --muted:#5B6675; --on-navy:#FFFFFF; --on-navy-muted:#B9C7D8;
  --star:#E8A317;
  --radius:14px; --shadow:0 1px 2px rgba(14,42,71,.06),0 4px 14px rgba(14,42,71,.07);
  --head:"Barlow Condensed","Arial Narrow",system-ui,sans-serif;
  --body:"Barlow",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --safe-b:env(safe-area-inset-bottom,0px); --safe-t:env(safe-area-inset-top,0px);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0B1522; --surface:#122236; --surface-2:#18304B; --line:#24405F;
    --ink:#E9EEF4; --muted:#9FB0C3; --orange-ink:#FF8A47; --green:#4CC08E;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 6px 18px rgba(0,0,0,.25); color-scheme:dark;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:500 16px/1.45 var(--body);min-height:100dvh;
  padding-bottom:calc(68px + var(--safe-b))}
img{max-width:100%;display:block}
a{color:inherit}
button{font:inherit;color:inherit}
.skip{position:absolute;left:-999px;top:0;background:var(--orange);color:#fff;padding:8px 12px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--orange);outline-offset:2px;border-radius:6px}

/* Top bar */
.topbar{position:sticky;top:0;z-index:30;background:var(--navy);color:var(--on-navy);
  display:flex;align-items:center;gap:16px;padding:calc(10px + var(--safe-t)) 16px 10px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;min-width:0}
.brand-mark{font:800 26px/1 var(--head);background:var(--orange);color:#fff;border-radius:9px;
  width:42px;height:42px;display:grid;place-items:center;flex:none;letter-spacing:-.5px}
.brand-text{display:flex;flex-direction:column;line-height:1.05;text-transform:uppercase;font-family:var(--head)}
.brand-text b{font-weight:800;font-size:19px;letter-spacing:.3px}
.brand-text small{font-weight:600;font-size:13px;color:var(--on-navy-muted);letter-spacing:.6px}
.topnav{display:none;margin-left:auto;gap:4px}
.topnav a{text-decoration:none;font:700 15px var(--head);text-transform:uppercase;letter-spacing:.5px;
  padding:8px 12px;border-radius:8px;color:var(--on-navy-muted)}
.topnav a:hover{color:#fff;background:var(--navy-2)}
.topnav a[aria-current=page]{color:#fff;background:var(--navy-2);box-shadow:inset 0 -3px 0 var(--orange)}

/* Bottom nav */
.bottomnav{position:fixed;left:0;right:0;bottom:0;z-index:30;background:var(--surface);border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,1fr);padding-bottom:var(--safe-b)}
.bottomnav a{display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 4px 9px;text-decoration:none;
  color:var(--muted);font:700 12.5px var(--head);text-transform:uppercase;letter-spacing:.4px;min-height:58px;justify-content:center}
.bottomnav svg{width:24px;height:24px;fill:currentColor}
.bottomnav a[aria-current=page]{color:var(--orange-ink)}
@media (min-width:900px){
  .topnav{display:flex}
  .bottomnav{display:none}
  body{padding-bottom:0}
}

main{max-width:1100px;margin:0 auto;padding:20px 16px 32px;outline:none}
main:focus,main:focus-visible{outline:none}
.view-enter{animation:fade .18s ease-out}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.view-enter{animation:none}}

/* Typography */
.eyebrow{font:700 13px var(--head);text-transform:uppercase;letter-spacing:1.2px;color:var(--green);margin:0 0 4px}
h1,h2,h3{font-family:var(--head);text-transform:uppercase;line-height:1.02;margin:0;letter-spacing:.2px}
h1{font-size:clamp(30px,7vw,46px);font-weight:800;color:var(--navy)}
h2{font-size:24px;font-weight:800;color:var(--navy)}
h3{font-size:19px;font-weight:700}
@media (prefers-color-scheme:dark){h1,h2{color:var(--ink)}}
.lead{color:var(--muted);margin:8px 0 0;max-width:60ch}
.section{margin-top:28px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;text-decoration:none;
  font:700 15px var(--head);text-transform:uppercase;letter-spacing:.6px;padding:11px 16px;border-radius:10px;min-height:44px;
  background:var(--surface);color:var(--navy);box-shadow:inset 0 0 0 1.5px var(--line)}
.btn:hover{box-shadow:inset 0 0 0 1.5px var(--navy)}
.btn svg{width:18px;height:18px;fill:currentColor;flex:none}
.btn-primary{background:var(--orange);color:#fff;box-shadow:none}
.btn-primary:hover{background:var(--orange-ink);box-shadow:none}
.btn-navy{background:var(--navy);color:#fff;box-shadow:none}
.btn-navy:hover{background:var(--navy-2);box-shadow:none}
.btn-sm{min-height:36px;padding:7px 12px;font-size:13.5px}
@media (prefers-color-scheme:dark){.btn{color:var(--ink)} .btn:hover{box-shadow:inset 0 0 0 1.5px var(--muted)}}
.btn-row{display:flex;gap:8px;flex-wrap:wrap}

/* Home hero */
.hero{display:grid;grid-template-columns:1fr 112px;grid-template-areas:"text cover" "search search" "actions actions";gap:16px 14px;background:var(--navy);color:#fff;border-radius:18px;padding:20px;overflow:hidden;position:relative}
.hero h1{color:#fff}
.hero .lead{color:var(--on-navy-muted)}
.hero .eyebrow{color:#FFB37F}
.hero-text{grid-area:text;min-width:0}.hero .search{grid-area:search}.hero-actions{grid-area:actions}
.hero-cover{grid-area:cover;width:100%;border-radius:8px;box-shadow:0 10px 30px rgba(0,0,0,.35);transform:rotate(-2deg)}
.hero-top{display:flex;gap:16px;align-items:flex-start}
.hero-actions{display:flex;gap:8px;flex-wrap:wrap}
.hero .btn{box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.35);background:transparent;color:#fff}
.hero .btn-primary{background:var(--orange);box-shadow:none}
@media (min-width:700px){.hero{padding:28px 32px;grid-template-columns:1fr 180px;grid-template-areas:"text cover" "search cover" "actions cover";column-gap:40px;align-items:start}.hero-cover{align-self:center}}

.search{position:relative;margin-top:4px}
.search input{width:100%;font:500 17px var(--body);padding:13px 14px 13px 44px;border-radius:12px;border:1.5px solid var(--line);
  background:var(--surface);color:var(--ink);min-height:50px}
.hero .search input{border-color:transparent}
.search input:focus{outline:none;border-color:var(--orange)}
.search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:20px;height:20px;fill:var(--muted)}

.continue{display:flex;align-items:center;gap:12px;background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:10px 12px;text-decoration:none;margin-top:16px}
.continue img{width:44px;border-radius:4px}
.continue small{display:block;color:var(--muted);font-size:13px}

/* Cards grid */
.cards{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
@media (min-width:700px){.cards{grid-template-columns:repeat(4,1fr);gap:16px}}
.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;text-decoration:none;display:flex;flex-direction:column}
.card img{aspect-ratio:1055/1491;object-fit:cover;width:100%;background:var(--surface-2)}
.card-body{display:block;padding:10px 12px 12px}
.card-kind{display:block;font:700 12px var(--head);text-transform:uppercase;letter-spacing:1px;color:var(--orange-ink)}
.card-title{display:block;font:700 17px/1.05 var(--head);text-transform:uppercase;margin-top:2px}
.card:hover{transform:translateY(-2px);transition:transform .15s}

.tiles{display:grid;gap:10px;grid-template-columns:1fr 1fr}
@media (min-width:700px){.tiles{grid-template-columns:repeat(4,1fr)}}
.tile{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px;text-decoration:none;display:flex;flex-direction:column;gap:6px;min-height:96px}
.tile svg{width:26px;height:26px;fill:var(--orange)}
.tile b{font:700 17px/1.05 var(--head);text-transform:uppercase}
.tile span{color:var(--muted);font-size:14px;line-height:1.3}

.howto{display:grid;gap:8px;counter-reset:h}
@media (min-width:800px){.howto{grid-template-columns:repeat(5,1fr)}}
.howto li{list-style:none;background:var(--surface);border-radius:12px;padding:12px;box-shadow:var(--shadow);counter-increment:h}
.howto b{font:800 17px var(--head);text-transform:uppercase;color:var(--navy);display:block}
.howto b::before{content:counter(h,decimal-leading-zero) " ";color:var(--orange)}
@media (prefers-color-scheme:dark){.howto b{color:var(--ink)}}
.howto p{margin:4px 0 0;color:var(--muted);font-size:14.5px}
.howto ol,.plain{padding:0;margin:0}

.offline-box{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;display:flex;flex-direction:column;gap:10px}
.offline-box p{margin:0;color:var(--muted)}
.progress{height:8px;background:var(--surface-2);border-radius:99px;overflow:hidden}
.progress i{display:block;height:100%;background:var(--green);width:0;transition:width .2s}

.notice{font-size:13.5px;color:var(--muted);border-left:3px solid var(--orange);padding:6px 10px;margin-top:24px}

/* Sumario */
.toolbar{position:sticky;top:62px;z-index:20;background:var(--bg);padding:10px 0 10px;margin:0 -16px;padding-left:16px;padding-right:16px}
.chips{display:flex;gap:6px;overflow-x:auto;padding:10px 0 2px;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;border:0;cursor:pointer;padding:8px 12px;border-radius:99px;background:var(--surface);box-shadow:inset 0 0 0 1.5px var(--line);
  font:700 14px var(--head);text-transform:uppercase;letter-spacing:.4px;min-height:38px;white-space:nowrap}
.chip[aria-pressed=true]{background:var(--navy);color:#fff;box-shadow:none}
@media (prefers-color-scheme:dark){.chip[aria-pressed=true]{background:var(--orange)}}
.module{margin-top:22px}
.module-head{display:flex;align-items:center;justify-content:space-between;gap:10px;border-bottom:2px solid var(--navy);padding-bottom:8px;margin-bottom:10px;flex-wrap:wrap}
@media (prefers-color-scheme:dark){.module-head{border-color:var(--line)}}
.module-num{font:800 15px var(--head);color:var(--orange-ink);letter-spacing:1px;text-transform:uppercase}
.list{display:grid;gap:8px;grid-template-columns:1fr}
@media (min-width:700px){.list{grid-template-columns:1fr 1fr}}
@media (min-width:1000px){.list{grid-template-columns:1fr 1fr 1fr}}
.row{display:flex;align-items:center;gap:12px;background:var(--surface);border-radius:12px;box-shadow:var(--shadow);padding:8px;position:relative}
.row a.row-link{display:flex;align-items:center;gap:12px;text-decoration:none;flex:1;min-width:0}
.row img{width:52px;aspect-ratio:1240/1754;object-fit:cover;border-radius:5px;background:var(--surface-2);flex:none}
.row-num{display:block;font:800 13px var(--head);color:var(--orange-ink);letter-spacing:.8px;text-transform:uppercase}
.row-title{display:block;font-weight:600;line-height:1.2;margin-top:1px}
.row-meta{min-width:0}
.star{border:0;background:none;cursor:pointer;width:44px;height:44px;display:grid;place-items:center;flex:none;border-radius:10px;color:var(--muted)}
.star svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8}
.star[aria-pressed=true]{color:var(--star)}
.star[aria-pressed=true] svg{fill:currentColor}
.empty{padding:28px 12px;text-align:center;color:var(--muted)}
mark{background:#FFE3CF;color:inherit;border-radius:3px;padding:0 1px}
@media (prefers-color-scheme:dark){mark{background:#6B3410}}

.extras{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}

/* Symptoms */
.sym{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px;margin-bottom:10px}
.sym h3{font-size:20px;color:var(--navy)}
@media (prefers-color-scheme:dark){.sym h3{color:var(--ink)}}
.sym-links{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.pill{display:inline-flex;align-items:center;gap:6px;text-decoration:none;background:var(--surface-2);border-radius:99px;padding:6px 10px 6px 6px;font-size:14px;font-weight:600;min-height:38px}
.pill b{background:var(--navy);color:#fff;font:800 13px var(--head);border-radius:99px;padding:3px 7px}
.pill:hover{box-shadow:inset 0 0 0 1.5px var(--orange)}

/* Glossary */
.gloss{display:grid;gap:10px}
@media (min-width:700px){.gloss{grid-template-columns:1fr 1fr}}
.gloss div{background:var(--surface);border-radius:12px;padding:12px 14px;box-shadow:var(--shadow)}
.gloss dt{font:800 18px var(--head);text-transform:uppercase;color:var(--navy)}
@media (prefers-color-scheme:dark){.gloss dt{color:var(--ink)}}
.gloss dd{margin:2px 0 0;color:var(--muted)}

/* Material page grid (bonus) */
.pages{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
@media (min-width:700px){.pages{grid-template-columns:repeat(auto-fill,minmax(170px,1fr))}}
.page{background:var(--surface);border-radius:12px;box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column}
.page a{text-decoration:none;display:block}
.page img{aspect-ratio:1240/1754;object-fit:cover;width:100%;background:var(--surface-2)}
.page-cap{padding:8px 10px 4px;font-size:14px;font-weight:600;line-height:1.2}
.page-cap small{display:block;color:var(--orange-ink);font:800 12px var(--head);letter-spacing:.8px;text-transform:uppercase}
.page-print{margin:auto 8px 8px;align-self:flex-start}
.mat-head{display:flex;gap:16px;align-items:flex-start;flex-wrap:wrap}
.mat-head img{width:110px;border-radius:8px;box-shadow:var(--shadow)}
.mat-head > div{flex:1;min-width:220px}
.back{display:inline-flex;align-items:center;gap:6px;text-decoration:none;color:var(--muted);font:700 14px var(--head);text-transform:uppercase;letter-spacing:.5px;margin-bottom:12px}
.back svg{width:16px;height:16px;fill:currentColor}

/* Viewer */
body.viewing{padding-bottom:0}
body.viewing .bottomnav,body.viewing .topbar{display:none}
body.viewing main{max-width:none;padding:0}
.viewer{position:fixed;inset:0;z-index:40;background:#0C1724;color:#fff;display:flex;flex-direction:column}
.v-bar{display:flex;align-items:center;gap:6px;padding:calc(8px + var(--safe-t)) 8px 8px;background:var(--navy-ink)}
.v-title{flex:1;min-width:0;line-height:1.15}
.v-title small{display:block;color:#FFB37F;font:800 12.5px var(--head);letter-spacing:.8px;text-transform:uppercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.v-title b{display:block;font:700 17px var(--head);text-transform:uppercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ibtn{border:0;background:transparent;color:#fff;cursor:pointer;width:44px;height:44px;border-radius:10px;display:grid;place-items:center;flex:none}
.ibtn:hover{background:rgba(255,255,255,.1)}
.ibtn svg{width:22px;height:22px;fill:currentColor}
.ibtn.star svg{fill:none;stroke:currentColor}
.ibtn.star[aria-pressed=true]{color:var(--star)}
.ibtn.star[aria-pressed=true] svg{fill:currentColor}
.v-stage{flex:1;overflow:auto;-webkit-overflow-scrolling:touch;display:flex;justify-content:center;align-items:flex-start;padding:10px;touch-action:pan-x pan-y pinch-zoom}
.v-stage img{width:auto;max-width:100%;max-height:100%;height:auto;border-radius:4px;box-shadow:0 8px 30px rgba(0,0,0,.5);background:#fff;user-select:none;-webkit-user-drag:none}
.v-stage.fit{align-items:center}
.v-stage.fit img{max-height:calc(100dvh - 140px - var(--safe-t) - var(--safe-b))}
.v-stage.zoom{align-items:flex-start;justify-content:flex-start}
.v-stage.zoom img{max-width:none;max-height:none;width:220%}
@media (min-width:900px){.v-stage.zoom img{width:150%}}
.v-foot{display:flex;align-items:center;gap:8px;padding:8px 8px calc(8px + var(--safe-b));background:var(--navy-ink)}
.v-foot .btn{background:var(--navy-2);color:#fff;box-shadow:none}
.v-foot .btn-primary{background:var(--orange)}
.v-count{flex:1;text-align:center;font:700 15px var(--head);letter-spacing:.6px;color:var(--on-navy-muted)}
.v-nav{width:52px;height:48px;border:0;border-radius:10px;background:var(--navy-2);color:#fff;cursor:pointer;display:grid;place-items:center}
.v-nav:disabled{opacity:.35;cursor:default}
.v-nav svg{width:24px;height:24px;fill:currentColor}
.v-actions-label{display:none}
@media (min-width:600px){.v-actions-label{display:inline}}

/* Toast & overlay */
.toast{position:fixed;left:50%;bottom:calc(84px + var(--safe-b));transform:translate(-50%,20px);background:var(--navy-ink);color:#fff;
  padding:10px 16px;border-radius:10px;font-weight:600;opacity:0;pointer-events:none;transition:.2s;z-index:60;max-width:calc(100% - 32px);text-align:center}
.toast.show{opacity:1;transform:translate(-50%,0)}
.print-overlay{position:fixed;inset:0;z-index:70;background:rgba(8,18,30,.6);display:grid;place-items:center}
.print-overlay[hidden]{display:none}
.print-box{background:var(--surface);color:var(--ink);border-radius:14px;padding:22px 26px;display:flex;align-items:center;gap:14px;box-shadow:var(--shadow)}
.print-box p{margin:0;font-weight:600}
.spinner{width:26px;height:26px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--orange);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* Print */
#print-root{display:none}
@page{size:A4 portrait;margin:6mm}
@media print{
  html,body{background:#fff !important;padding:0 !important;margin:0}
  body > *:not(#print-root){display:none !important}
  #print-root{display:block}
  .print-page{width:100%;height:284mm;display:flex;align-items:center;justify-content:center;break-after:page;page-break-after:always;overflow:hidden}
  .print-page:last-child{break-after:auto;page-break-after:auto}
  .print-page img{max-width:100%;max-height:284mm;width:auto;height:auto;object-fit:contain}
}