/**
 * Estilos base, reset moderno, tipografía y utilidades de accesibilidad.
 */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  background-color: var(--color-bg-base);
  color: var(--color-text-primary);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
  transition: background var(--transition-slow);
}

/* Iconos SVG centralizados */
.svg-icon {
  width: 20px;
  height: 20px;
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
  stroke: currentColor;
}

/* Tipografía de encabezados */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  outline: none;
  color: inherit;
}

button:focus-visible, input:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

input {
  font-family: inherit;
  color: inherit;
}

/* Scrollbar moderno */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(11, 15, 25, 0.6);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.28);
}

body.mode-light ::-webkit-scrollbar-track {
  background: rgba(226, 232, 240, 0.8);
}

body.mode-light ::-webkit-scrollbar-thumb {
  background: rgba(15, 23, 42, 0.2);
}

body.mode-light ::-webkit-scrollbar-thumb:hover {
  background: rgba(15, 23, 42, 0.35);
}

/* Utilidad 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;
}

.hidden {
  display: none !important;
}