/* =========================================================
   ALEXTOLL · Base
   Reset, tipografía, botones, formularios, tarjetas y utilidades.
   Se comparte entre todas las páginas.
   ========================================================= */

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + var(--nav-top) + 20px);-webkit-text-size-adjust:100%;text-size-adjust:100%;background:var(--bg)}
body{margin:0;min-height:100vh;background:var(--bg);color:var(--ink);font-family:var(--f-sans);font-size:var(--fs-base);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}
img,svg,video{max-width:100%;display:block}
img,video{height:auto}
[hidden]{display:none!important}
a{color:inherit;text-underline-offset:.2em;text-decoration-thickness:1px}
h1,h2,h3,h4{line-height:1.08;text-wrap:balance;margin:0;font-weight:650;font-stretch:var(--wide);letter-spacing:-.025em}
p{margin:0;text-wrap:pretty}
ul,ol{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
::selection{background:#FFFFFF;color:#000000}
:focus-visible{outline:2px solid #FFFFFF;outline-offset:3px;border-radius:6px}
.ico{width:1.25em;height:1.25em;flex:none}
/* Iconos de línea (los de la portada): trazo fino, color del texto */
.ico-l{width:1.25em;height:1.25em;flex:none;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

/* El contenido empieza debajo del menú flotante (la portada no: su cabecera va por debajo) */
main{padding-top:calc(var(--nav-h) + var(--nav-top) + 12px)}
main.main--flush{padding-top:0}

/* ---------- Utilidades ---------- */
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.code{font-family:var(--f-mono);font-size:var(--fs-xs);letter-spacing:.02em}
.muted{color:var(--muted)}
.silver{background:var(--silver);-webkit-background-clip:text;background-clip:text;color:transparent}
.skip{position:absolute;left:-999px;top:8px;background:#FFFFFF;color:#000000;padding:10px 16px;border-radius:var(--pill);z-index:100;font-weight:600}
.skip:focus{left:8px}

/* Antetítulo pequeño en mayúsculas (como en la referencia de diseño) */
.eyebrow{font-size:.72rem;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--muted)}

/* ---------- Secciones ---------- */
.section{padding-block:var(--section-y);position:relative}
.section + .section{border-top:1px solid var(--line)}
.section--tint{background:var(--bg-2);--section-bg:var(--bg-2)}
.section-head{display:grid;gap:14px;max-width:62ch;margin-bottom:clamp(32px,4.5vw,56px)}
.section-head h2{font-size:var(--fs-xl)}
.section-head p{color:var(--muted);font-size:var(--fs-md);line-height:1.55}
.section-head a{color:var(--ink);font-weight:600}
/* Cabecera partida: título a la izquierda, frase o botón a la derecha */
.head-split{display:grid;gap:18px 48px;align-items:end;margin-bottom:clamp(32px,4.5vw,56px)}
.head-split > div{display:grid;gap:12px}
.head-split h2{font-size:var(--fs-xl)}
.head-split .head-note{color:var(--muted);max-width:46ch;line-height:1.55}
@media (min-width: 860px){ .head-split{grid-template-columns:1fr auto} .head-split .head-note{justify-self:end} }

/* ---------- Botones ----------
   .btn + una variante:
   --primary   blanco con texto negro (acción principal)
   --secondary borde fino y fondo de cristal
   --ghost     borde fino, para tarjetas ("Más información")
   --link      texto con flecha
   ------------------------------------------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:0 26px;border-radius:var(--pill);font:600 .98rem/1 var(--f-sans);letter-spacing:-.005em;text-decoration:none;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:background-color .25s var(--ease-out), border-color .25s, color .25s, transform .25s var(--ease-out), box-shadow .25s}
.btn:active{transform:scale(.98)}
.btn:disabled{opacity:.6;cursor:progress}
.btn .ico,.btn .ico-l{width:18px;height:18px;transition:transform .25s var(--ease-out)}
.btn:hover .ico-arrow{transform:translateX(3px)}
.btn--primary{background:var(--accent);color:var(--accent-ink);box-shadow:0 10px 30px -12px rgba(255,255,255,.35)}
.btn--primary:hover{background:var(--accent-hover);box-shadow:0 14px 36px -12px rgba(255,255,255,.45)}
.btn--secondary{border-color:rgba(255,255,255,.22);color:var(--ink);background:rgba(255,255,255,.04);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.btn--secondary:hover{border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.09)}
.btn--ghost{border-color:rgba(255,255,255,.22);color:var(--ink);background:transparent}
.btn--ghost:hover{border-color:#FFFFFF;background:#FFFFFF;color:#000000}
.btn--link{min-height:auto;padding:4px 0;border:0;color:var(--ink);background:none;box-shadow:none}
.btn--link:hover{color:#FFFFFF;text-decoration:underline}
.btn--sm{min-height:42px;padding:0 20px;font-size:.92rem}
.btn--block{width:100%}

/* ---------- Tarjeta base (fondo sólido, borde fino y reflejo arriba) ---------- */
.card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--r-lg);box-shadow:var(--card-shadow)}

/* ---------- Formularios ---------- */
.field{display:grid;gap:8px;min-width:0}
.field label{font-weight:600;font-size:var(--fs-sm)}
.field .hint{font-size:.875rem;color:var(--muted)}
.field input,.field select,.field textarea{width:100%;font-size:1rem;color:var(--ink);background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r);padding:13px 16px;min-height:52px;transition:border-color .2s, box-shadow .2s, background-color .2s}
.field select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23A1A1A8' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:18px;padding-right:44px}
.field textarea{min-height:150px;resize:vertical;line-height:1.5}
.field input:hover,.field select:hover,.field textarea:hover{border-color:rgba(255,255,255,.2)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:rgba(255,255,255,.55);box-shadow:0 0 0 4px rgba(255,255,255,.08)}
.field.invalid input,.field.invalid textarea,.field.invalid select{border-color:var(--err)}
.err{color:var(--err);font-size:.875rem}
.err:empty{display:none}
.check{display:flex;gap:12px;align-items:flex-start;font-size:var(--fs-sm);cursor:pointer;color:var(--muted)}
.check input{width:20px;height:20px;margin-top:2px;accent-color:#FFFFFF;flex:none;cursor:pointer}
.check a{color:var(--ink)}

/* ---------- Avisos flotantes ---------- */
.toast{position:fixed;left:50%;bottom:calc(92px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:#FFFFFF;color:#000000;padding:12px 20px;border-radius:var(--pill);font-weight:600;z-index:70;font-size:.95rem;max-width:calc(100vw - 32px);text-align:center;box-shadow:0 16px 40px -16px rgba(0,0,0,.8)}

/* ---------- Entrada suave al hacer scroll (js/modules/reveal.js) ---------- */
.js [data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .9s var(--ease-out), transform .9s var(--ease-out);transition-delay:var(--d,0s)}
.js [data-reveal].is-in{opacity:1;transform:none}

/* ---------- Movimiento reducido ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition:none!important;scroll-behavior:auto!important}
  .js [data-reveal]{opacity:1;transform:none}
}