/* ==========================================================================
   Base: reset, tipografía, fondo, accesibilidad
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  background: var(--background);
  scrollbar-color: var(--border-strong) transparent;
  scrollbar-width: thin;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--background);
  font-feature-settings: 'cv11', 'ss01', 'ss03';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
}

/* Fondo: trama de puntos + degradados radiales + ruido. Extremadamente sutil. */
body::before,
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}
body::before {
  background:
    radial-gradient(900px 600px at 88% -10%, var(--background-glow-1), transparent 70%),
    radial-gradient(700px 520px at -10% 110%, var(--background-glow-2), transparent 70%),
    radial-gradient(circle at 1px 1px, var(--dot) 1px, transparent 1.5px) 0 0 / 22px 22px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, 0.55) 70%, rgba(0, 0, 0, 0.35) 100%);
  mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, 0.55) 70%, rgba(0, 0, 0, 0.35) 100%);
}
body::after {
  opacity: calc(0.025 * var(--glow-strength));
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

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

button {
  cursor: pointer;
  background: none;
  border: 0;
  padding: 0;
}

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

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

h1,
h2,
h3 {
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

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

[hidden] {
  display: none !important;
}

::selection {
  background: var(--accent);
  color: var(--accent-contrast);
}

:focus {
  outline: none;
}
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

.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;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: var(--space-4);
  z-index: 1000;
  padding: var(--space-2) var(--space-4);
  background: var(--accent);
  color: var(--accent-contrast);
  border-radius: var(--radius-sm);
  font-weight: 600;
}
.skip-link:focus {
  top: calc(var(--safe-top) + var(--space-3));
}

/* ---- Utilidades tipográficas ---- */
.mono {
  font-family: var(--font-mono);
  font-feature-settings: normal;
}
.label {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}
.num {
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.big-number {
  font-size: var(--text-2xl);
  font-weight: 300;
  letter-spacing: -0.045em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.huge-number {
  font-size: var(--text-3xl);
  font-weight: 250;
  letter-spacing: -0.055em;
  line-height: 0.95;
  font-variant-numeric: tabular-nums;
}
.muted {
  color: var(--text-secondary);
}
.faint {
  color: var(--text-tertiary);
}
.accent {
  color: var(--accent);
}
.accent-2 {
  color: var(--accent-2);
}
.danger {
  color: var(--danger);
}
.warning {
  color: var(--warning);
}
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}
.nowrap {
  white-space: nowrap;
}

/* ---- Utilidades de layout ---- */
.row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.row-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}
.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.stack-sm {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.stack-lg {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.wrap {
  flex-wrap: wrap;
}
.grow {
  flex: 1 1 auto;
  min-width: 0;
}
.spacer {
  flex: 1;
}

/* ---- Animaciones base ---- */
@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@keyframes grow-x {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}
@keyframes grow-y {
  from {
    transform: scaleY(0);
  }
  to {
    transform: scaleY(1);
  }
}
@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
@keyframes check-pop {
  0% {
    transform: scale(0.6);
  }
  60% {
    transform: scale(1.12);
  }
  100% {
    transform: scale(1);
  }
}

.enter {
  animation: fade-up calc(var(--dur) * 1.8) var(--ease-out) both;
}
.enter-stagger > * {
  animation: fade-up calc(var(--dur) * 1.8) var(--ease-out) both;
}
.enter-stagger > :nth-child(2) { animation-delay: calc(var(--dur) * 0.15); }
.enter-stagger > :nth-child(3) { animation-delay: calc(var(--dur) * 0.3); }
.enter-stagger > :nth-child(4) { animation-delay: calc(var(--dur) * 0.45); }
.enter-stagger > :nth-child(5) { animation-delay: calc(var(--dur) * 0.6); }
.enter-stagger > :nth-child(n + 6) { animation-delay: calc(var(--dur) * 0.75); }

:root[data-motion='off'] *,
:root[data-motion='off'] *::before,
:root[data-motion='off'] *::after {
  animation-duration: 0ms !important;
  animation-delay: 0ms !important;
  transition-duration: 0ms !important;
}
@media (prefers-reduced-motion: reduce) {
  :root:not([data-motion='on']) *,
  :root:not([data-motion='on']) *::before,
  :root:not([data-motion='on']) *::after {
    animation-duration: 0ms !important;
    animation-delay: 0ms !important;
    transition-duration: 0ms !important;
  }
}