/* ============================================================
   NOVA Launch · Base
   Tipografía, contenedores, helpers semánticos y utilidades
   transversales. No incluye componentes específicos.
   ============================================================ */

/* ---------- Base body ---------- */
body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  font-weight: 400;
  line-height: var(--lh-normal);
  color: var(--color-text-secondary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
}

/* ---------- Headings semánticos ---------- */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-primary);
  font-weight: 600;
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
}

/* ---------- Tipografía · Clases utilitarias ---------- */
.text-display {
  font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--color-text-primary);
}

.text-h1 {
  font-size: clamp(2rem, 3vw + 1rem, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.text-h2 {
  font-size: clamp(1.75rem, 2vw + 1rem, 2.5rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--color-text-primary);
}

.text-h3 {
  font-size: var(--fs-xl);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-text-primary);
}

.text-h4 {
  font-size: var(--fs-lg);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text-primary);
}

.text-lead {
  font-size: clamp(var(--fs-md), 1vw + 0.875rem, 1.25rem);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.text-body {
  font-size: var(--fs-base);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.text-small {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.text-eyebrow {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--color-accent);
}

/* ---------- Gradient text helper ---------- */
.text-gradient {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding-inline: var(--space-8);
  }
}

/* ---------- Section wrapper ---------- */
.section {
  padding-block: var(--section-py-mobile);
  position: relative;
}

.section--alt {
  background-color: var(--color-bg-secondary);
}

.section__header {
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: var(--space-9);
  text-align: center;
}

.section__header > * + * {
  margin-top: var(--space-4);
}

@media (min-width: 1024px) {
  .section {
    padding-block: var(--section-py-desktop);
  }
}

/* ---------- Accesibilidad ---------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  z-index: var(--z-toast);
  padding: var(--space-3) var(--space-5);
  background: var(--color-accent);
  color: #FFFFFF;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: top var(--duration-fast) var(--ease-out);
}

.skip-link:focus-visible {
  top: var(--space-4);
}

.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;
}

:focus-visible {
  outline: 2px solid var(--color-accent-hover);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Eliminar outline cuando no es teclado */
:focus:not(:focus-visible) {
  outline: none;
}

/* ---------- Selection ---------- */
::selection {
  background-color: var(--color-accent);
  color: #FFFFFF;
}

/* ---------- Scrollbar (webkit, cosmético) ---------- */
@media (pointer: fine) {
  ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }
  ::-webkit-scrollbar-track {
    background: var(--color-bg-primary);
  }
  ::-webkit-scrollbar-thumb {
    background: var(--color-border-strong);
    border-radius: var(--radius-pill);
    border: 2px solid var(--color-bg-primary);
  }
  ::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
  }
}

/* ---------- Helpers ---------- */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.text-center { text-align: center; }

/* ---------- Reveal on load (no-JS friendly) ---------- */
@keyframes nova-fade-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  animation: nova-fade-up 800ms var(--ease-out) forwards;
}

.reveal--delay-1 { animation-delay: 100ms; }
.reveal--delay-2 { animation-delay: 250ms; }
.reveal--delay-3 { animation-delay: 400ms; }
.reveal--delay-4 { animation-delay: 550ms; }
.reveal--delay-5 { animation-delay: 700ms; }

/* ---------- Reveal on scroll (IntersectionObserver) ---------- */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms var(--ease-out),
              transform 700ms var(--ease-out);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
  will-change: auto;
}

.reveal-on-scroll--d1 { transition-delay: 80ms; }
.reveal-on-scroll--d2 { transition-delay: 160ms; }
.reveal-on-scroll--d3 { transition-delay: 240ms; }
.reveal-on-scroll--d4 { transition-delay: 320ms; }
.reveal-on-scroll--d5 { transition-delay: 400ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal-on-scroll {
    opacity: 1;
    transform: none;
    transition: none;
  }
}