:root{--bg:#f6f8fb;--card:#fff;--ink:#14213d;--muted:#5b6478;--line:#e1e6ef;--brand:#1d3a8a;--accent:#ffd23f;--r:14px}
:root[data-theme=dark]{--bg:#0f1524;--card:#18203a;--ink:#eef2fb;--muted:#a3adc4;--line:#2a3558;--brand:#8fb0ff;--accent:#ffd23f}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--brand)}.wrap{max-width:1100px;margin:0 auto;padding:0 16px}
.sr,.skip:not(:focus){position:absolute;left:-9999px}.skip:focus{position:fixed;top:8px;left:8px;background:var(--accent);color:#000;padding:8px 12px;z-index:9}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.nav{position:sticky;top:0;z-index:5;background:var(--card);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:16px;min-height:60px}.nav nav{margin-left:auto;display:flex;gap:16px}
.nav nav a{text-decoration:none;color:var(--ink);font-weight:600}
.logo{font-size:1.2rem;text-decoration:none;color:var(--ink);font-weight:500}.logo b{color:var(--brand)}
.hero{padding:40px 0 16px}.hero h1{font-size:clamp(1.8rem,6vw,3rem);line-height:1.15;margin:0 0 12px;max-width:18ch}
.hero p{color:var(--muted);max-width:52ch;margin:0 0 20px}
.search input{width:100%;font:inherit;padding:16px 18px;border:2px solid var(--line);border-radius:var(--r);background:var(--card);color:var(--ink)}
.search input:focus{border-color:var(--brand)}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}
.chip{font:inherit;padding:10px 16px;min-height:44px;border:1px solid var(--line);border-radius:99px;background:var(--card);color:var(--ink);cursor:pointer}
.chip.on{background:var(--brand);color:#fff;border-color:var(--brand)}:root[data-theme=dark] .chip.on{color:#0f1524}
h2{font-size:1.4rem;margin:36px 0 14px}
.grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.card{display:block;padding:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--brand);transform:translateY(-2px)}
.card h3{margin:6px 0;font-size:1.05rem}.card p{margin:0;color:var(--muted);font-size:.92rem}
.tag{font-size:.78rem;color:var(--brand);font-weight:600}.muted{color:var(--muted)}
.btn{font:inherit;font-weight:600;padding:12px 18px;min-height:48px;border:0;border-radius:10px;background:var(--brand);color:#fff;cursor:pointer}
:root[data-theme=dark] .btn{color:#0f1524}.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.crumbs{margin:20px 0 0;color:var(--muted);font-size:.9rem}
.layout{display:grid;gap:24px}#tool h1{margin:12px 0 4px}.lead{color:var(--muted);margin-top:0}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px}
.form{display:grid;gap:14px;margin-bottom:16px}.form label{display:grid;gap:6px;font-weight:600;font-size:.92rem}
.form input,.form select,.form textarea{font:inherit;padding:12px;min-height:48px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink)}
.row{display:flex;gap:8px;flex-wrap:wrap}
.out{display:block;margin-top:16px;padding:14px;border-radius:10px;background:var(--bg);border:1px dashed var(--line);font-weight:600;white-space:pre-wrap;word-break:break-word;min-height:3em}
.ad-container{margin:24px 0;min-height:90px;text-align:center;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:6px 0;position:relative}
.ad-container::before{content:"Publicidad";display:block;font-size:.7rem;color:var(--muted)}
.ad-container.side{display:none}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin-bottom:8px}.faq summary{cursor:pointer;font-weight:600}
.foot{margin-top:48px;padding:24px 0;border-top:1px solid var(--line);background:var(--card);font-size:.92rem}
@media(min-width:900px){.layout{grid-template-columns:1fr 300px}.ad-container.side{display:block;position:sticky;top:76px;min-height:600px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}


/* v2: páginas SEO estáticas */
.nav-in{flex-wrap:wrap}.nav nav{align-items:center}.nav nav a[aria-current="page"]{color:var(--brand)}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.hero-actions .btn{text-decoration:none;display:inline-flex;align-items:center}
.kicker{display:inline-block;font-weight:700;color:var(--brand);font-size:.86rem;letter-spacing:.02em;text-transform:uppercase}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:22px 0}.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px}.stat b{display:block;font-size:1.4rem}
.content{max-width:760px}.content h2{margin-top:34px}.content h3{margin-top:24px}.content p,.content li{color:var(--ink)}.content .muted{color:var(--muted)}
.note{padding:14px 16px;border-left:4px solid var(--brand);background:var(--card);border-radius:0 10px 10px 0;margin:18px 0}.warn{border-left-color:#c77800}
.example{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;margin:16px 0}.example strong{display:block;margin-bottom:6px}
.tool-shell{padding-top:22px}.tool-shell .panel{margin:14px 0 26px}.tool-shell .lead{font-size:1.05rem}
.article-card{display:block;padding:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);text-decoration:none;color:var(--ink)}.article-card:hover{border-color:var(--brand)}.article-card p{color:var(--muted);margin-bottom:0}
.article-meta{color:var(--muted);font-size:.9rem}.article-list{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.table-wrap{overflow:auto}.simple-table{width:100%;border-collapse:collapse;background:var(--card)}.simple-table th,.simple-table td{padding:10px 12px;border:1px solid var(--line);text-align:left}.simple-table th{background:var(--bg)}
.breadcrumbs{margin-top:20px;font-size:.9rem;color:var(--muted)}.breadcrumbs a{color:var(--brand)}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:18px}.footer-grid h3{font-size:1rem;margin:0 0 8px}.footer-grid a{display:block;margin:4px 0}
.inline-links{display:flex;gap:8px;flex-wrap:wrap}.pill-link{padding:8px 12px;border:1px solid var(--line);border-radius:999px;text-decoration:none;background:var(--card)}
@media(max-width:650px){.nav nav{order:3;width:100%;overflow:auto;padding-bottom:8px}.nav-in{padding-top:6px}.hero{padding-top:28px}}

/* v4 */
.suggest-box{margin-top:30px;padding:20px;background:var(--card);border:1px solid var(--line);border-radius:var(--r)}
.hero .kicker{margin-bottom:8px}.content a[target="_blank"]::after{content:" ↗";font-size:.8em}.out{font-variant-numeric:tabular-nums}

/* v10: navegación por grandes secciones */
.section-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));margin:14px 0 28px}.section-card{display:block;padding:20px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);text-decoration:none;color:var(--ink);transition:transform .15s,border-color .15s}.section-card:hover{transform:translateY(-2px);border-color:var(--brand)}.section-card h3{margin:8px 0 4px}.section-card p{margin:0 0 12px;color:var(--muted);font-size:.92rem}.section-card strong{color:var(--brand);font-size:.86rem}.section-icon{font-size:1.6rem}.subject-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin:16px 0 26px}.subject-box{padding:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--r)}.subject-box h2{margin:0 0 8px;font-size:1.2rem}.subject-box ul{margin:0;padding-left:18px}.subject-box li{margin:5px 0}.subject-box a{text-decoration:none}.section-hero{padding:34px 0 10px}.section-hero h1{margin:6px 0 10px;font-size:clamp(2rem,5vw,3rem)}

/* v11: Asistente ToolBox (recomendador local, sin API externa) */
.ai-fab{position:fixed;right:18px;bottom:18px;z-index:30;border:0;border-radius:999px;padding:13px 17px;background:var(--brand);color:#fff;font:700 14px/1.2 system-ui,-apple-system,"Segoe UI",sans-serif;box-shadow:0 10px 30px #0003;cursor:pointer}.ai-fab:hover{transform:translateY(-1px)}:root[data-theme=dark] .ai-fab{color:#0f1524}.ai-panel{position:fixed;right:18px;bottom:76px;z-index:31;width:min(390px,calc(100vw - 24px));max-height:min(650px,calc(100vh - 100px));background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:0 18px 50px #0004;overflow:hidden}.ai-head{display:flex;align-items:flex-start;gap:12px;padding:15px 16px;border-bottom:1px solid var(--line)}.ai-head div{display:grid}.ai-head small{color:var(--muted);font-size:.78rem;margin-top:2px}.ai-close{margin-left:auto;border:0;background:transparent;color:var(--ink);font-size:1.6rem;line-height:1;cursor:pointer}.ai-log{padding:14px;height:330px;overflow:auto;background:var(--bg)}.ai-msg{max-width:92%;margin:0 0 10px;padding:10px 12px;border-radius:14px;background:var(--card);border:1px solid var(--line)}.ai-msg.user{margin-left:auto;background:color-mix(in srgb,var(--brand) 12%,var(--card));border-color:color-mix(in srgb,var(--brand) 35%,var(--line))}.ai-msg p{margin:0 0 7px}.ai-msg p:last-child{margin-bottom:0}.ai-recs{display:grid;gap:8px;margin-top:8px}.ai-rec{display:grid;gap:2px;padding:10px;border:1px solid var(--line);border-radius:10px;text-decoration:none;color:var(--ink);background:var(--card)}.ai-rec:hover{border-color:var(--brand)}.ai-rec span{font-size:.82rem;color:var(--muted)}.ai-rec em{font-size:.75rem;color:var(--brand);font-style:normal;font-weight:700}.ai-quick{display:flex;gap:6px;overflow:auto;padding:10px 12px;border-top:1px solid var(--line);background:var(--card)}.ai-quick button,.ai-need-grid button,.ai-inline-missing,.ai-missing{border:1px solid var(--line);border-radius:999px;background:var(--bg);color:var(--ink);padding:8px 10px;font:inherit;font-size:.78rem;cursor:pointer;white-space:nowrap}.ai-form{display:grid;grid-template-columns:1fr auto;gap:8px;padding:10px 12px;background:var(--card)}.ai-form input{min-width:0;padding:11px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);font:inherit}.ai-form .btn{min-height:44px;padding:9px 13px}.ai-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 12px 12px;color:var(--muted);font-size:.68rem}.ai-missing{padding:6px 9px}.ai-need-grid{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}@media(max-width:520px){.ai-fab{right:12px;bottom:12px}.ai-panel{right:12px;bottom:68px}.ai-log{height:min(340px,45vh)}}

/* v12: TOBI + modo razonamiento */
.ai-steps{margin:8px 0 10px;padding-left:22px}.ai-steps li{margin:4px 0}.ai-result{padding:9px 10px;border-radius:10px;background:color-mix(in srgb,var(--brand) 10%,var(--card));border:1px solid color-mix(in srgb,var(--brand) 28%,var(--line))}.ai-head strong::after{content:" · ToolBox Inteligente";font-size:.72rem;color:var(--muted);font-weight:600;margin-left:5px}@media(max-width:420px){.ai-head strong::after{display:none}}

/* v14: ejercicios paso a paso dentro de todas las herramientas */
.exercise-box{margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}.exercise-title strong{font-size:1.05rem}.exercise-title p{margin:3px 0 12px;color:var(--muted);font-size:.9rem}.exercise-label{display:grid;gap:6px;font-weight:700;font-size:.92rem}.exercise-input{width:100%;font:inherit;padding:12px;min-height:110px;resize:vertical;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);margin-bottom:12px}.exercise-out{margin-top:14px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--bg)}.exercise-out ol{margin:8px 0;padding-left:22px}.exercise-out li{margin:4px 0}.exercise-result{margin:10px 0 0;padding:10px;border-radius:9px;background:color-mix(in srgb,var(--brand) 10%,var(--card));border:1px solid color-mix(in srgb,var(--brand) 25%,var(--line))}.field-target{opacity:.72}.field-target::after{content:"Se calcula";display:inline-block;width:max-content;font-size:.72rem;color:var(--brand);font-weight:700}.field-target input:disabled{cursor:not-allowed;border-style:dashed}

/* V16 · TOBI más cómodo en móvil y para ejercicios largos */
.ai-form textarea{min-width:0;min-height:54px;max-height:150px;padding:11px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);font:inherit;resize:vertical;line-height:1.35}
.ai-assumptions{margin:8px 0 10px;padding:9px 10px;border:1px dashed var(--line);border-radius:10px;color:var(--muted);font-size:.82rem;background:color-mix(in srgb,var(--brand) 5%,var(--card))}.ai-assumptions ul{margin:5px 0 0;padding-left:18px}.ai-assumptions li{margin:3px 0}
@media(max-width:520px){
  .ai-panel{left:8px;right:8px;width:auto;bottom:66px;max-height:calc(100dvh - 92px);border-radius:16px}
  .ai-head{padding:12px 13px}.ai-head strong{font-size:1.05rem}.ai-head small{font-size:.74rem}
  .ai-log{height:min(330px,42dvh);padding:10px}.ai-msg{max-width:96%;padding:9px 10px}
  .ai-quick{padding:8px 10px}.ai-form{grid-template-columns:1fr auto;padding:8px 10px}.ai-form textarea{font-size:16px;min-height:52px}.ai-form .btn{align-self:stretch}
  .ai-foot{padding:0 10px 10px;flex-wrap:wrap}.ai-fab{max-width:calc(100vw - 24px)}
}


/* V17 · infraestructura, SEO interno, accesibilidad y directorio */
.nav nav a,.footer-grid a,.breadcrumbs a,.pill-link{min-height:44px;display:inline-flex;align-items:center}.nav #theme{min-width:64px}.breadcrumbs{display:flex;align-items:center;gap:7px;flex-wrap:wrap}.breadcrumbs span[aria-hidden="true"]{color:var(--muted)}
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:36px}.section-heading h2{margin:0}.section-heading p{margin:3px 0 0}.section-heading .btn{text-decoration:none}
.related-tools{margin-top:36px;padding-top:8px;border-top:1px solid var(--line)}.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px}.mini-tool{display:grid;gap:4px;padding:13px 14px;border:1px solid var(--line);border-radius:12px;background:var(--card);color:var(--ink);text-decoration:none}.mini-tool:hover,.mini-tool:focus-visible{border-color:var(--brand)}.mini-tool strong{line-height:1.25}.mini-tool span{color:var(--muted);font-size:.84rem;line-height:1.35}
.tool-cta{margin:30px 0 4px;padding:18px;border:1px solid var(--line);border-left:5px solid var(--brand);border-radius:12px;background:var(--card)}.tool-cta>span{font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;color:var(--brand);font-weight:800}.tool-cta h2{margin:6px 0}.tool-cta p{margin:0 0 13px;color:var(--muted)}.tool-cta .btn{text-decoration:none;display:inline-flex}
.directory-shell{padding-top:18px}.directory-search{display:grid;gap:7px;max-width:760px;font-weight:700}.directory-search input,.nf-search input{width:100%;font:inherit;font-size:16px;padding:14px 15px;border:2px solid var(--line);border-radius:12px;background:var(--card);color:var(--ink)}.directory-search input:focus,.nf-search input:focus{border-color:var(--brand)}.directory-chips{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}.directory-group{scroll-margin-top:100px}.directory-group h2{display:flex;align-items:center;gap:9px}.count-badge{display:inline-grid;place-items:center;min-width:30px;height:30px;padding:0 8px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:.78rem}.directory-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(235px,1fr));gap:10px}.directory-card{display:block;padding:15px;border:1px solid var(--line);border-radius:12px;background:var(--card);color:var(--ink);text-decoration:none}.directory-card:hover,.directory-card:focus-visible{border-color:var(--brand);transform:translateY(-1px)}.directory-card h3{margin:5px 0;font-size:1rem}.directory-card p{margin:0;color:var(--muted);font-size:.88rem;line-height:1.45}[hidden]{display:none!important}
.notfound{padding-top:54px;max-width:860px}.error-code{display:block;font-size:clamp(3.5rem,12vw,7rem);font-weight:900;line-height:1;color:color-mix(in srgb,var(--brand) 42%,var(--muted));letter-spacing:-.05em}.notfound h1{font-size:clamp(1.8rem,5vw,3rem);line-height:1.1;margin:12px 0}.nf-search{display:grid;gap:7px;margin:22px 0}.nf-row{display:grid;grid-template-columns:1fr auto;gap:8px}.notfound #nf-results:not(:empty){margin:12px 0 20px}
@media(max-width:650px){.nav-in{gap:8px}.nav .logo{font-size:1.05rem}.nav nav{gap:4px;scrollbar-width:none}.nav nav::-webkit-scrollbar{display:none}.nav nav a{padding:6px 9px;white-space:nowrap;font-size:.9rem}.nav #theme{padding:9px 11px;min-height:44px}.directory-grid,.related-grid{grid-template-columns:1fr}.nf-row{grid-template-columns:1fr}.nf-row .btn{width:100%}.tool-shell{padding-left:12px;padding-right:12px}.panel{padding:14px}.row>.btn{flex:1 1 145px}.section-heading{align-items:start}.section-heading .btn{width:100%;justify-content:center}}
@media(hover:none){.card:hover,.section-card:hover,.directory-card:hover{transform:none}}

/* V20 */
.suggest-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px;margin:18px 0}.suggest-card{min-height:88px;text-align:left;border:1px solid var(--border);background:var(--card);color:var(--text);border-radius:16px;padding:16px;cursor:pointer}.suggest-card strong,.suggest-card span{display:block}.suggest-card span{margin-top:6px;color:var(--muted)}.suggest-card:disabled{opacity:.7;cursor:default}.ai-confidence{font-size:.85rem;color:var(--muted);margin-top:6px}.field-target{opacity:.72}.field-target input{background:var(--soft)}

/* V21 · Motion/UX: microanimaciones ligeras, sin librerías */
:root{--border:var(--line);--text:var(--ink);--soft:var(--bg);--motion-fast:140ms;--motion:220ms;--motion-slow:360ms;--ease:cubic-bezier(.2,.8,.2,1)}

/* Interacciones táctiles y de escritorio */
.btn,.chip,.card,.section-card,.article-card,.directory-card,.subject-box,.ai-rec,.pill-link,.suggest-card,.panel,.faq details{
  transition:transform var(--motion) var(--ease),border-color var(--motion) ease,box-shadow var(--motion) ease,background-color var(--motion) ease,opacity var(--motion) ease;
}
.btn,.chip,.card,.section-card,.article-card,.directory-card,.ai-rec,.pill-link,.suggest-card{position:relative;overflow:hidden;-webkit-tap-highlight-color:transparent}
.btn:active,.chip:active,.card:active,.section-card:active,.article-card:active,.directory-card:active,.ai-rec:active,.pill-link:active,.suggest-card:active{transform:scale(.975)}

@media (hover:hover) and (pointer:fine){
  .card:hover,.section-card:hover,.article-card:hover,.directory-card:hover,.subject-box:hover,.suggest-card:hover{
    transform:translateY(-4px);box-shadow:0 10px 28px rgba(20,33,61,.10);border-color:color-mix(in srgb,var(--brand) 55%,var(--line));
  }
  .btn:hover,.chip:hover,.pill-link:hover,.ai-rec:hover{transform:translateY(-1px)}
}

/* Ripple de click */
.tb-ripple-dot{position:absolute;border-radius:999px;pointer-events:none;background:rgba(255,255,255,.36);transform:translate(-50%,-50%) scale(0);animation:tb-ripple .56s ease-out forwards;z-index:0}
.btn.ghost .tb-ripple-dot,.chip .tb-ripple-dot,.card .tb-ripple-dot,.article-card .tb-ripple-dot,.directory-card .tb-ripple-dot,.section-card .tb-ripple-dot,.pill-link .tb-ripple-dot,.suggest-card .tb-ripple-dot{background:color-mix(in srgb,var(--brand) 16%,transparent)}
@keyframes tb-ripple{to{transform:translate(-50%,-50%) scale(1);opacity:0}}

/* Entradas de formulario más vivas */
.form input,.form select,.form textarea,.search input,.nf-row input,.ai-form input,.ai-form textarea{
  transition:border-color var(--motion-fast) ease,box-shadow var(--motion-fast) ease,background-color var(--motion-fast) ease,transform var(--motion-fast) ease;
}
.form input:focus,.form select:focus,.form textarea:focus,.search input:focus,.nf-row input:focus,.ai-form input:focus,.ai-form textarea:focus{
  box-shadow:0 0 0 4px color-mix(in srgb,var(--brand) 14%,transparent);transform:translateY(-1px);
}

/* Resultado: feedback cuando cambia */
.out.tb-output-pop{animation:tb-output-pop .34s var(--ease)}
@keyframes tb-output-pop{0%{transform:scale(.985);opacity:.72}55%{transform:scale(1.008)}100%{transform:scale(1);opacity:1}}

/* Reveal-on-scroll: JS añade .tb-motion solamente cuando está activo */
.tb-motion{opacity:0;transform:translateY(14px)}
.tb-motion.tb-in{opacity:1;transform:none;transition:opacity var(--motion-slow) ease,transform var(--motion-slow) var(--ease)}
.tb-motion-delay-1{transition-delay:45ms!important}.tb-motion-delay-2{transition-delay:90ms!important}.tb-motion-delay-3{transition-delay:135ms!important}

/* FAQ y navegación */
.faq summary{position:relative;padding-right:28px;list-style:none}.faq summary::-webkit-details-marker{display:none}.faq summary::after{content:'+';position:absolute;right:2px;top:50%;transform:translateY(-50%) rotate(0);font-size:1.25rem;color:var(--brand);transition:transform var(--motion) var(--ease)}.faq details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.nav{transition:box-shadow var(--motion) ease,background-color var(--motion) ease}.nav.tb-scrolled{box-shadow:0 6px 22px rgba(20,33,61,.08)}

/* TOBI: entrada y botón flotante con vida, sin exagerar */
.ai-panel{transform-origin:bottom right;animation:tb-panel-in .22s var(--ease)}
@keyframes tb-panel-in{from{opacity:0;transform:translateY(10px) scale(.985)}to{opacity:1;transform:none}}
.ai-fab.tb-attention{animation:tb-attention .7s var(--ease) 1}
@keyframes tb-attention{0%,100%{transform:scale(1)}45%{transform:scale(1.06)}}

/* Estado visual de botones tras tocar, breve */
.tb-pressed{filter:brightness(.98)}

/* Accesibilidad: nada de marear al que desactiva animaciones */
@media(prefers-reduced-motion:reduce){
  .tb-motion{opacity:1!important;transform:none!important}.tb-ripple-dot{display:none!important}.out.tb-output-pop,.ai-panel,.ai-fab.tb-attention{animation:none!important}
  .btn,.chip,.card,.section-card,.article-card,.directory-card,.subject-box,.ai-rec,.pill-link,.suggest-card,.panel,.faq details,.nav,.form input,.form select,.form textarea,.search input{transition:none!important}
}

/* V22 · TOBI Web + razonamiento mejorado */
.ai-mode-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 14px;border-top:1px solid var(--line,#2f3b63);border-bottom:1px solid var(--line,#2f3b63);background:color-mix(in srgb,var(--panel,#151d36) 92%,transparent)}
.ai-mode-row small{color:var(--muted,#aeb7d4);font-size:.78rem;line-height:1.35}
.ai-web-toggle{display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:7px 12px;border:1px solid var(--line,#334064);border-radius:999px;font-weight:700;cursor:pointer;background:var(--card,#18213c)}
.ai-web-toggle input{width:18px;height:18px;accent-color:var(--brand,#87a9ff)}
.ai-web-badge{display:inline-flex;align-items:center;gap:6px;padding:5px 9px;border-radius:999px;background:color-mix(in srgb,var(--brand,#87a9ff) 16%,transparent);font-size:.8rem;font-weight:800}
.ai-web-answer{line-height:1.62}
.ai-sources{display:grid;gap:8px;margin-top:12px}.ai-sources>b{font-size:.9rem}.ai-sources>a{display:flex;gap:9px;align-items:flex-start;padding:9px 10px;border:1px solid var(--line,#334064);border-radius:12px;text-decoration:none;color:inherit}.ai-sources>a>span{display:grid;place-items:center;flex:0 0 24px;height:24px;border-radius:50%;background:color-mix(in srgb,var(--brand,#87a9ff) 20%,transparent);font-size:.75rem;font-weight:800}.ai-sources a strong{display:block;font-size:.86rem}.ai-sources a small{display:block;color:var(--muted,#aeb7d4);margin-top:2px;word-break:break-all}.ai-loading{opacity:.86}.ai-loading p{animation:tobiPulse 1.2s ease-in-out infinite}@keyframes tobiPulse{50%{opacity:.55}}
@media (prefers-reduced-motion:reduce){.ai-loading p{animation:none}}
/* V25 */
.tb-featured-badge{display:inline-block;margin-left:.25rem;color:#f8c74e;font-weight:900}


/* PreFinal · favoritos, recientes, historial, fuentes y accesibilidad */
.personal-hub{margin:18px 0 34px;padding:18px;border:1px solid var(--line);border-radius:18px;background:color-mix(in srgb,var(--card) 94%,var(--brand) 6%)}
.personal-columns{display:grid;grid-template-columns:1fr 1fr;gap:18px}.personal-columns h3{margin-top:0}.personal-columns .grid{grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}.card{isolation:isolate}.card-fav{position:absolute;right:12px;top:10px;font-size:1.1rem;color:#f6bf3b;z-index:2}.install-btn{margin-top:10px}
.local-history{margin:12px 0 26px;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:var(--card)}.local-history summary{cursor:pointer;font-weight:800}.history-list{display:grid;gap:8px;margin:12px 0}.history-item{display:grid;gap:3px;text-align:left;width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:11px;background:var(--bg);color:var(--ink);cursor:pointer}.history-item span{font-size:.78rem;color:var(--muted)}.history-item strong{font-size:.9rem;line-height:1.35;overflow-wrap:anywhere}
.verified-info{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin:12px 0 24px;padding:14px 16px;border:1px solid color-mix(in srgb,var(--brand) 38%,var(--line));border-radius:14px;background:color-mix(in srgb,var(--brand) 7%,var(--card))}.verified-info strong{display:block;margin:6px 0}.verified-info p{margin:0;color:var(--muted);line-height:1.5}.verified-info>a{flex:0 0 auto;text-decoration:none;font-weight:800}.verified-pill{display:inline-flex;padding:4px 8px;border-radius:999px;background:color-mix(in srgb,#2f9e44 14%,transparent);color:color-mix(in srgb,#2f9e44 80%,var(--ink));font-size:.76rem;font-weight:900}
.access-pop{position:fixed;z-index:10020;right:18px;top:76px;width:min(300px,calc(100vw - 36px));padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--card);box-shadow:0 16px 45px rgba(0,0,0,.18)}.access-pop>strong{display:block;margin-bottom:10px}.access-row{display:flex;gap:8px;flex-wrap:wrap}.access-row button{border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);padding:9px 10px;cursor:pointer}.access-check{display:flex;align-items:center;gap:8px;margin-top:12px;font-weight:700}
html[data-font="large"]{font-size:112.5%}html[data-contrast="high"]{--line:color-mix(in srgb,var(--ink) 55%,transparent);--muted:color-mix(in srgb,var(--ink) 82%,transparent)}html[data-contrast="high"] .btn,html[data-contrast="high"] input,html[data-contrast="high"] textarea,html[data-contrast="high"] select{border-width:2px}
.prefinal-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 28px}.prefinal-strip>div{padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:var(--card)}.prefinal-strip strong{display:block}.prefinal-strip span{display:block;color:var(--muted);font-size:.86rem;margin-top:3px;line-height:1.4}
@media(max-width:760px){.personal-columns{grid-template-columns:1fr}.verified-info{display:grid}.prefinal-strip{grid-template-columns:1fr}.access-pop{top:68px}.history-item{padding:12px}.personal-hub{padding:14px}}

/* PreFinal · pulido de interfaz + validación paranoica */
.hero{position:relative}.hero::before{content:"";position:absolute;inset:10px -18px -8px;z-index:-1;border-radius:28px;background:linear-gradient(135deg,color-mix(in srgb,var(--brand) 8%,transparent),transparent 58%);pointer-events:none}
.smart-search{position:relative;display:block;max-width:820px}.smart-search .search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);font-size:1.35rem;color:var(--brand);font-weight:900;pointer-events:none}.smart-search input{padding-left:48px;box-shadow:0 8px 26px rgba(20,33,61,.06)}
.quick-searches{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin:10px 0 4px;color:var(--muted);font-size:.86rem}.quick-searches button{border:0;background:transparent;color:var(--brand);font:inherit;font-weight:750;padding:5px 7px;border-radius:8px;cursor:pointer}.quick-searches button:hover{background:color-mix(in srgb,var(--brand) 8%,transparent)}.search-status{margin:2px 0 0;font-size:.86rem}
.tool-card{min-height:190px;display:flex;flex-direction:column}.card-top{display:flex;align-items:center;gap:8px;padding-right:24px}.tool-icon{display:grid;place-items:center;width:31px;height:31px;flex:0 0 31px;border-radius:9px;background:color-mix(in srgb,var(--brand) 10%,var(--card));color:var(--brand);font-weight:900;font-size:.82rem}.tool-card .tag{line-height:1.2}.tool-card h3{margin-top:12px}.tool-card p{flex:1}.card-open{display:block;margin-top:14px;color:var(--brand);font-size:.84rem;font-weight:800}
.panel{box-shadow:0 8px 28px rgba(20,33,61,.035)}.tool-shell .panel{padding:clamp(16px,3vw,24px)}.tool-shell #t-form{grid-template-columns:repeat(auto-fit,minmax(min(220px,100%),1fr));gap:16px}.tool-shell #t-form label:has(textarea){grid-column:1/-1}.tool-shell #t-form label:has(input[type="text"]){min-width:0}.form label{position:relative}.form label.field-error{color:#b42318}.form label.field-error input,.form label.field-error select,.form label.field-error textarea,[aria-invalid="true"]{border-color:#d92d20!important;box-shadow:0 0 0 4px rgba(217,45,32,.09)!important}.out{transition:border-color .18s ease,background-color .18s ease,box-shadow .18s ease}.out.out-ok{border-style:solid;border-color:color-mix(in srgb,#2f9e44 45%,var(--line));background:color-mix(in srgb,#2f9e44 6%,var(--card));box-shadow:0 8px 24px rgba(47,158,68,.06)}.out.out-error{border-style:solid;border-color:color-mix(in srgb,#d92d20 58%,var(--line));background:color-mix(in srgb,#d92d20 6%,var(--card));color:color-mix(in srgb,#d92d20 75%,var(--ink))}
.ai-head{background:linear-gradient(135deg,color-mix(in srgb,var(--brand) 10%,var(--card)),var(--card))}.ai-head strong{font-size:1.02rem}.ai-muted-mini{color:var(--muted);font-size:.82rem;line-height:1.45}.ai-form textarea{resize:vertical;max-height:150px}.ai-msg.bot{box-shadow:0 3px 12px rgba(20,33,61,.025)}.ai-rec{position:relative}.ai-rec em{margin-top:4px}
@media(max-width:650px){.tool-card{min-height:0}.quick-searches{overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}.quick-searches span,.quick-searches button{flex:0 0 auto}.smart-search input{font-size:16px}.tool-shell #t-form{grid-template-columns:1fr}.hero::before{inset:8px -8px -4px}.ai-panel{right:10px;bottom:70px;width:calc(100vw - 20px);max-height:calc(100dvh - 84px)}.ai-log{height:min(360px,45dvh)}}

/* PreFinal · pulido visual de buscador/chips y controles de navegación */
.hero .quick-searches{
  gap:8px;
  margin:12px 0 10px;
  font-size:.84rem;
}
.hero .quick-searches>span{
  color:var(--muted);
  font-weight:750;
  letter-spacing:.01em;
  margin-right:2px;
}
.hero .quick-searches button{
  appearance:none;
  border:1px solid color-mix(in srgb,var(--brand) 24%,var(--line));
  background:color-mix(in srgb,var(--brand) 7%,var(--card));
  color:var(--ink);
  font:inherit;
  font-weight:750;
  line-height:1;
  min-height:34px;
  padding:8px 12px;
  border-radius:999px;
  box-shadow:0 2px 8px rgba(20,33,61,.035);
  cursor:pointer;
  transition:transform .16s ease,border-color .16s ease,background-color .16s ease,box-shadow .16s ease;
}
.hero .quick-searches button::after{
  content:'↗';
  margin-left:6px;
  color:var(--brand);
  font-size:.78em;
  opacity:.75;
}
.hero .quick-searches button:hover{
  transform:translateY(-1px);
  border-color:color-mix(in srgb,var(--brand) 52%,var(--line));
  background:color-mix(in srgb,var(--brand) 12%,var(--card));
  box-shadow:0 5px 14px rgba(20,33,61,.07);
}
.hero .quick-searches button:active{transform:translateY(0) scale(.985)}

.hero .chips{
  gap:9px;
  margin:14px 0 8px;
}
.hero .chip{
  min-height:42px;
  padding:9px 15px;
  border:1px solid color-mix(in srgb,var(--line) 88%,var(--brand) 12%);
  background:color-mix(in srgb,var(--card) 96%,var(--brand) 4%);
  box-shadow:0 2px 10px rgba(20,33,61,.025);
  font-weight:680;
}
.hero .chip:hover{
  border-color:color-mix(in srgb,var(--brand) 42%,var(--line));
  background:color-mix(in srgb,var(--brand) 7%,var(--card));
}
.hero .chip.on{
  background:linear-gradient(135deg,var(--brand),color-mix(in srgb,var(--brand) 82%,#6d8dff));
  border-color:transparent;
  box-shadow:0 7px 18px color-mix(in srgb,var(--brand) 20%,transparent);
}

.nav #theme,.nav #tb-access{
  min-height:40px;
  padding:8px 12px;
  border-radius:12px;
  border:1px solid color-mix(in srgb,var(--line) 86%,var(--brand) 14%);
  background:color-mix(in srgb,var(--card) 96%,var(--brand) 4%);
  color:var(--ink)!important;
  box-shadow:none;
  font-size:.88rem;
  font-weight:750;
}
.nav #theme:hover,.nav #tb-access:hover{
  border-color:color-mix(in srgb,var(--brand) 45%,var(--line));
  background:color-mix(in srgb,var(--brand) 8%,var(--card));
}

@media(max-width:650px){
  .hero .quick-searches{margin-top:10px;gap:7px}
  .hero .quick-searches>span{position:sticky;left:0;z-index:1;padding-right:4px;background:var(--bg)}
  .hero .quick-searches button{min-height:36px;padding:8px 11px}
  .hero .chips{gap:7px}
  .hero .chip{min-height:40px;padding:8px 13px}
  .nav #theme,.nav #tb-access{min-height:38px;padding:7px 10px}
}