/* 1) RESET */
*,
*::before,
*::after { box-sizing: border-box; }

html{
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  
}

body{ margin: 0; }
body, html{  
  max-width: 100%;
  overflow-x: clip; /* o hidden si prefiere compat */}
img, video{
  max-width: 100%;
  height: auto;
  display: block;
}

a{
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea{
  font: inherit;
}

/* 2) BASE / GLOBAL */
body{
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--app-bg);
  line-height: 1.5;
}

/* 3) TYPOGRAPHY (mínimo) */
h1,h2,h3,h4,h5,h6{
  margin: 0;
  font-weight: 700;
  color: var(--heading-color);
}

p{ margin: 0; font-optical-sizing: auto}

small{
  font-size: 0.875rem;
  color: var(--color-muted);
}

/* 4) FORMS (bare defaults, sin “look & feel”) */
input, select, textarea{
  width: 100%;
  color: inherit;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

input:focus, select:focus, textarea:focus{
  outline: none;
  box-shadow: var(--focus-ring);
}

/* 5) LAYOUT HELPERS */
.content{
  width: 100%;
  padding: var(--space-4);
  display: grid;
  gap: var(--space-3, 12px);
}
.section{
   width: 100%;
}
.container{
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-4);
  background-color: var(--color-surface);
  padding: var(--space-6);
  border-radius: var(--radius-sm);
}

.stack{
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.cluster{
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Flex */

.flex{
  display: flex;
  flex-wrap: wrap;
  min-width: 0;
  gap: var(--gap, var(--space-4));
}


.flex.sidebar > :first-child{
  flex: 0 0 var(--sidebar, 220px);
}

.flex.sidebar > :not(:first-child){
  flex: 1 1 0;
}
.cols-leading > :first-child{
  flex: 0 0 var(--leading, 160px);
}

.cols-leading > :not(:first-child){
  flex: 1 1 0;
}
.flex > *{ min-width: 0; }

/* column count */
.cols-1 > *{
  flex: 1 1 100%;
}

.cols-2 > *{
  flex: 1 1 calc(50% - var(--gap, 0px));
}

.cols-3 > *{
  flex: 1 1 calc(33.333% - var(--gap, 0px));
}

.cols-4 > *{
  flex: 1 1 calc(25% - var(--gap, 0px));
}

/* gap helpers */
.gap-2{ --gap: var(--space-2); gap: var(--gap); }
.gap-3{ --gap: var(--space-3); gap: var(--gap); }
.gap-4{ --gap: var(--space-4); gap: var(--gap); }
.gap-6{ --gap: var(--space-6); gap: var(--gap); }

/* safety */
.flex > *{
  min-width: 0;
}


/* 6) UTILITIES (mínimas) */
.hidden{ display: none !important; }
.no-scroll{ overflow: hidden; }
.text-center{ text-align: center; }


.prose{
  --prose-max: 68ch;  
  --prose-gap: 1.25em;

  max-width: var(--prose-max);
  margin-inline: auto;
  line-height: 1.7;
  font-size: 1.05rem;
  color: var(--color-text);
}

/* =========================================================
   ACCESSIBILITY
   ========================================================= */

/* Focus */
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* Selección de texto */
::selection {
  background: var(--color-primary);
  color: var(--color-bg);
}

/* Scroll suave */
html {
  scroll-behavior: smooth;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 999;
  padding: var(--space-2) var(--space-4);
  background: var(--app-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: var(--space-3);
}

/* Oculto para vista, visible para lectores de pantalla */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}