/* ============================================================================
   LAB42 ACADEMY — base v2
   ========================================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--bar-h) + 18px);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  background-image: radial-gradient(
      38rem 26rem at 8% -6%,
      color-mix(in srgb, var(--sun-soft) 70%, transparent) 0%,
      transparent 60%
    ),
    radial-gradient(
      32rem 24rem at 96% 2%,
      color-mix(in srgb, var(--bubble-soft) 70%, transparent) 0%,
      transparent 62%
    ),
    radial-gradient(
      34rem 26rem at 60% 104%,
      color-mix(in srgb, var(--sky-soft) 75%, transparent) 0%,
      transparent 62%
    );
  background-attachment: fixed;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  font-weight: 500;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img,
svg,
canvas {
  display: block;
  max-width: 100%;
}

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

button {
  cursor: pointer;
  border: 0;
  background: none;
  touch-action: manipulation;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: var(--lh-snug);
  letter-spacing: var(--tracking-snug);
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

:focus-visible {
  outline: 3px solid var(--grape);
  outline-offset: 3px;
  border-radius: var(--r-xs);
}

::selection {
  background: var(--sun);
  color: var(--ink);
}

* {
  scrollbar-width: thin;
  scrollbar-color: var(--line-2) transparent;
}
*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
*::-webkit-scrollbar-thumb {
  background: var(--line-2);
  border-radius: var(--r-pill);
  border: 2px solid transparent;
  background-clip: content-box;
}
*::-webkit-scrollbar-thumb:hover {
  background: var(--ink-3);
  background-clip: content-box;
}

/* --------------------------------------------------------------- LAYOUT - */
.shell {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.shell--narrow {
  max-width: var(--maxw-narrow);
}

.section {
  padding-block: clamp(2.5rem, 1.6rem + 4vw, 5rem);
  position: relative;
}

.section--tight {
  padding-block: clamp(1.8rem, 1.2rem + 2.4vw, 3.2rem);
}

.section--paper {
  background: var(--paper-warm);
}

/* ---------------------------------------------------------- TIPOGRAFÍA -- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: 800;
  letter-spacing: var(--tracking-wide);
  color: var(--grape-deep);
  background: var(--grape-soft);
  border-radius: var(--r-pill);
  padding: 0.35rem 0.9rem;
}

.h1 {
  font-size: var(--fs-h1);
  line-height: var(--lh-tight);
  font-weight: 700;
}

.h2 {
  font-size: var(--fs-h2);
  line-height: 1.12;
  font-weight: 700;
}

.h3 {
  font-size: var(--fs-h3);
  font-weight: 700;
}

.lead {
  font-size: var(--fs-lead);
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 68ch;
}

.muted {
  color: var(--ink-2);
}

.tiny {
  font-size: var(--fs-xs);
  line-height: 1.55;
}

.hl {
  color: var(--grape-deep);
  font-weight: 700;
}

.mono {
  font-family: var(--font-mono, ui-monospace, monospace);
}

/* --------------------------------------------------------------- GRIDS - */
.grid {
  display: grid;
  gap: var(--sp-4);
}
.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.grid--auto-lg {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

@media (max-width: 900px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 620px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* --------------------------------------------------------------- FLEX -- */
.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  align-items: center;
}
.cluster--between {
  justify-content: space-between;
}
.stack {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
.stack--sm {
  gap: var(--sp-2);
}
.stack--lg {
  gap: var(--sp-6);
}
.row {
  display: flex;
  gap: var(--sp-3);
  align-items: center;
}
.row--between {
  justify-content: space-between;
}
.spacer {
  flex: 1;
}

/* ---------------------------------------------------------- UTILIDADES - */
.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;
}

.text-center {
  text-align: center;
}
.hide-sm {
  display: initial;
}
@media (max-width: 820px) {
  .hide-sm {
    display: none !important;
  }
}

/* --------------------------------------------------- ENTRADA SUAVE ------ */
/* Cada bloque que aparece en pantalla sube con calma. Escalonado por
   variable CSS para que la lista se despliegue como una ola. */
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.rise {
  animation: rise var(--t-enter) var(--ease-soft) both;
  animation-delay: var(--d, 0ms);
}

@keyframes pop {
  0% {
    transform: scale(0.6);
    opacity: 0;
  }
  60% {
    transform: scale(1.06);
    opacity: 1;
  }
  100% {
    transform: scale(1);
  }
}

.pop {
  animation: pop var(--t-celebrate) var(--ease-pop) both;
}

@keyframes float-y {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-7px);
  }
}

.float {
  animation: float-y 4.6s var(--ease-in-out) infinite;
}

@keyframes wiggle {
  0%,
  100% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(-3deg);
  }
  75% {
    transform: rotate(3deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* Transición de vista (API nativa cuando el navegador la soporta). */
::view-transition-old(root) {
  animation: fade-out 180ms var(--ease-soft) both;
}
::view-transition-new(root) {
  animation: fade-in 260ms var(--ease-soft) both;
}

@keyframes fade-out {
  to {
    opacity: 0;
    transform: translateY(-6px) scale(0.995);
  }
}
@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.995);
  }
}