/* ============================================================================
   Rescue Wiki — base.css: reset, tipografía, marca, menús, avisos y escenas,
   comunes a todas las pantallas. Solo tokens (DOCS/06 §10). Densidad compacta.
   ============================================================================ */

*,*::before,*::after{box-sizing:border-box}
*{margin:0;padding:0}
/* «hidden» manda siempre: una clase con display:grid/flex no debe volver visible lo oculto */
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
html,body{min-height:100%}
body{font-family:var(--font-body);font-size:14.5px;line-height:1.5;background:var(--ui-bg);color:var(--ui-text);-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700;line-height:1.12;letter-spacing:.005em}
a{color:inherit;text-decoration:none}
a:hover{color:var(--ui-accent)}
.enlace{color:var(--ui-accent);text-decoration:underline;text-underline-offset:2px}
img,svg,video,canvas{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--ui-accent);outline-offset:2px;border-radius:4px}
::selection{background:var(--ui-accent-glow)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--ui-scroll);border-radius:20px}
code,kbd,pre,samp{font-family:var(--font-mono)}

.ico{display:inline-block;vertical-align:-3px;width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.visualmente-oculto{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.salto-contenido{position:absolute;left:-9999px;top:8px;z-index:300;background:var(--ui-accent);color:var(--ui-accent-ink);padding:10px 16px;border-radius:var(--r-sm);font-weight:700}
.salto-contenido:focus{left:8px}

/* --- Marca ------------------------------------------------------------------- */
.marca{display:flex;align-items:center;gap:10px;min-width:0}
.marca__isotipo{width:40px;height:40px;color:var(--ui-marca);flex:none}
.marca__logo{height:34px;width:auto;max-width:96px;object-fit:contain;object-position:left center;flex:none}
.marca__texto{display:flex;flex-direction:column;align-items:flex-start;line-height:1;min-width:0}
.marca__logotipo{display:block;height:17px;width:auto;aspect-ratio:823/100;color:var(--ui-marca)}
.marca__sub{font-size:7px;letter-spacing:.21em;color:var(--ui-muted);font-weight:600;margin-top:6px;white-space:nowrap;text-transform:uppercase}
.marca__sub b{color:var(--ui-marca);font-weight:700}
a:hover>.marca{color:inherit}

/* --- Piezas comunes ---------------------------------------------------------- */
.avatar{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--boton-marca-1),var(--boton-marca-2));color:var(--boton-marca-ink);font-family:var(--font-display);font-weight:700;font-size:13.5px;flex:none}
.boton-icono{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:50%;color:var(--ui-muted);transition:background var(--t-rapida) var(--ease),color var(--t-rapida) var(--ease)}
.boton-icono:hover{background:var(--ui-panel-2);color:var(--ui-text)}
#selectorTema .ico-luna{display:none}
[data-theme-ui="light"] #selectorTema .ico-sol{display:none}
[data-theme-ui="light"] #selectorTema .ico-luna{display:block}

/* Menús desplegables (details/summary: funcionan sin JS; app.js los cierra al salir) */
.menu{position:relative}
.menu>summary{list-style:none;cursor:pointer}
.menu>summary::-webkit-details-marker{display:none}
.menu__panel{position:absolute;right:0;top:calc(100% + 10px);z-index:80;min-width:250px;max-width:calc(100vw - 24px);padding:8px;border-radius:16px;background:var(--ui-panel);border:1px solid var(--ui-border);box-shadow:var(--ui-shadow);display:grid;gap:2px}
.menu__encabezado{display:grid;gap:2px;padding:8px 12px 10px;margin-bottom:4px;border-bottom:1px solid var(--ui-border)}
.menu__encabezado strong{font-weight:600}
.menu__encabezado span{font-size:12.5px;color:var(--ui-muted);overflow-wrap:anywhere}
.menu__panel a,.menu__panel button{display:flex;align-items:center;gap:11px;width:100%;padding:9px 12px;border-radius:11px;font-size:14px;font-weight:500;text-align:left;color:var(--ui-text)}
.menu__panel a .ico,.menu__panel button .ico{color:var(--ui-muted)}
.menu__panel a:hover,.menu__panel button:hover{background:var(--ui-panel-2);color:var(--ui-text)}
.menu__panel a:hover .ico{color:var(--ui-accent)}
.menu__separador{height:1px;background:var(--ui-border);margin:4px 0}
.menu__peligro,.menu__peligro .ico{color:var(--ui-red)!important}

/* --- Avisos (toasts): abajo al centro, solo cambian de opacidad (DOCS/11 §1) --------- */
.toasts{position:fixed;left:50%;bottom:calc(22px + env(safe-area-inset-bottom));transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;gap:8px;width:min(520px,calc(100vw - 32px));pointer-events:none}
.toast{display:flex;gap:10px;align-items:flex-start;background:var(--ui-panel);border:1px solid var(--ui-border);border-left:3px solid var(--ui-accent);border-radius:var(--r);padding:12px 16px;box-shadow:var(--ui-shadow);font-weight:600;font-size:14px;opacity:0;transition:opacity var(--t-rapida) var(--ease);pointer-events:auto}
.toast.visible{opacity:1}
.toast--error{border-left-color:var(--ui-red)}
.toast--warning{border-left-color:var(--ui-warn)}
.toast--info{border-left-color:var(--ui-link)}

/* --- Escenas (DOCS/11): la caja se reserva siempre y el respaldo SVG pinta primero --- */
.escena{position:relative;overflow:hidden;contain:strict}
.escena>canvas{position:absolute;inset:0;width:100%;height:100%;opacity:0;transition:opacity var(--t-rapida) var(--ease)}
/* «congelada» (escalón 4 de R-OPA-19) conserva el último fotograma como imagen fija */
.escena[data-estado="lista"]>canvas,.escena[data-estado="congelada"]>canvas{opacity:1}
.escena__respaldo{position:absolute;inset:0;margin:auto;width:min(60%,280px);height:auto;aspect-ratio:1;color:var(--ui-marca);opacity:.75}
.escena[data-estado="lista"]>.escena__respaldo,.escena[data-estado="congelada"]>.escena__respaldo{opacity:0}
.escena--fondo{position:fixed;inset:0;z-index:0;pointer-events:none;contain:none}
/* De fondo, el respaldo ocupa la franja libre entre la cabecera y el mensaje, como la escena */
.escena--fondo>.escena__respaldo{inset:15vh 0 auto;margin:0 auto;width:min(36vw,220px)}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}