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

* {
  margin: 0;
}

html,
body {
  height: 100%;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

img {
  height: auto;
}

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

button {
  background: transparent;
  border: 0;
  cursor: pointer;
  color: inherit;
}

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

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

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  color: var(--color-text-strong);
  line-height: var(--lh-tight);
  letter-spacing: var(--letter-tight);
  font-weight: var(--fw-semibold);
}

h1 {
  font-size: var(--fs-h1);
  font-weight: var(--fw-bold);
}

h2 {
  font-size: var(--fs-h2);
  font-weight: var(--fw-semibold);
}

h3 {
  font-size: var(--fs-h3);
  font-weight: var(--fw-semibold);
}

h4 {
  font-size: var(--fs-h4);
  font-weight: var(--fw-semibold);
}

p {
  line-height: var(--lh-normal);
  color: var(--color-text-muted);
}

strong {
  font-weight: var(--fw-semibold);
  color: var(--color-text-strong);
}

a {
  transition: color var(--duration-fast) var(--ease-out);
}

/* ---------- Accessibility ---------- */
:focus {
  outline: none;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 6px;
}

/* Focus ring claro sobre superficies oscuras / brand */
.bg--brand :focus-visible,
.bg--brand-grid :focus-visible,
.section--brand-image :focus-visible,
.footer :focus-visible,
.auth-body :focus-visible,
.feature-modal :focus-visible {
  box-shadow: var(--focus-ring-dark);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  padding: 0.75rem 1.25rem;
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top var(--duration-base) var(--ease-out);
}

.skip-link:focus {
  top: 1rem;
}

.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;
}

/* ---------- Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-x);
}

.section {
  padding-block: var(--section-y);
  position: relative;
}

.section--tight {
  padding-block: calc(var(--section-y) * 0.7);
}

/* ═══════════════════════════════════════════════════════════════════
   UNIFIED BACKGROUND SYSTEM
   Five canonical section backgrounds — used consistently across the
   landing so every section feels like the same product.

   Variants:
     .bg--white-grid    → Blanco con cuadrícula
     .bg--gray-dots     → Gris con textura de puntos
     .bg--soft-blue     → Blanco + degradado sutil azul
     .bg--brand-grid    → Degradado Kuantik + cuadrícula (sobre azul)
     .bg--brand         → Degradado Kuantik puro (footer / hero)
   ═══════════════════════════════════════════════════════════════════ */

.section[class*="bg--"] {
  position: relative;
  isolation: isolate;
  overflow: clip;
}

.section[class*="bg--"] > .container {
  position: relative;
  z-index: 1;
}

/* ── 1. Blanco con cuadrícula ── */
.bg--white-grid {
  background: var(--color-white);
}

.bg--white-grid::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(0, 100, 230, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 100, 230, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 20%, transparent 80%);
  pointer-events: none;
}

/* ── 2. Gris con textura de puntos ── */
.bg--gray-dots {
  background: var(--color-bg-soft);
}

.bg--gray-dots::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(0, 100, 230, 0.10) 1px, transparent 0);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 25%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 25%, transparent 80%);
  pointer-events: none;
}

/* ── 3. Blanco + degradado sutil azul ── */
.bg--soft-blue {
  background:
    radial-gradient(ellipse 100% 60% at 50% 0%, rgba(0, 199, 255, 0.08), transparent 60%),
    radial-gradient(ellipse 80% 70% at 50% 100%, rgba(0, 100, 230, 0.06), transparent 70%),
    var(--color-white);
}

.bg--soft-blue::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 60% 40% at 80% 20%, rgba(0, 199, 255, 0.10), transparent 60%),
    radial-gradient(ellipse 60% 40% at 20% 80%, rgba(0, 100, 230, 0.08), transparent 60%);
  pointer-events: none;
}

/* ── 4. Degradado Kuantik + cuadrícula (oscuro, texto blanco) ── */
.bg--brand-grid {
  color: var(--on-dark-text);
  background: linear-gradient(135deg, #001D3D 0%, #00458A 30%, #0064E6 65%, #00C7FF 100%);
}

.bg--brand-grid::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.07) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 100% 80% at 50% 50%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 100% 80% at 50% 50%, black 30%, transparent 80%);
  pointer-events: none;
}

.bg--brand-grid::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 70% 50% at 20% 20%, rgba(0, 199, 255, 0.30), transparent 65%),
    radial-gradient(ellipse 80% 60% at 80% 80%, rgba(0, 100, 230, 0.30), transparent 65%);
  pointer-events: none;
}

/* ── 5. Degradado Kuantik puro (footer / hero) ── */
.bg--brand {
  color: var(--on-dark-text);
  background: linear-gradient(135deg, #001D3D 0%, #00458A 35%, #0064E6 70%, #00C7FF 100%);
}

.bg--brand::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 70% 50% at 15% 20%, rgba(0, 199, 255, 0.45), transparent 60%),
    radial-gradient(ellipse 80% 60% at 85% 80%, rgba(0, 100, 230, 0.45), transparent 60%);
  pointer-events: none;
}

/* ─────────────────────────────────────────
   Typography overrides when section is dark
   ───────────────────────────────────────── */
.bg--brand-grid h1,
.bg--brand-grid h2,
.bg--brand-grid h3,
.bg--brand-grid h4,
.bg--brand h1,
.bg--brand h2,
.bg--brand h3,
.bg--brand h4 {
  color: var(--on-dark-text);
}

.bg--brand-grid p,
.bg--brand p {
  color: var(--on-dark-muted);
}

/* ─────────────────────────────────────────
   Legacy aliases — kept until full migration
   ───────────────────────────────────────── */
.section--soft {
  background: var(--color-bg-soft);
  position: relative;
  overflow: hidden;
}

.section--soft::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(0, 100, 230, 0.10) 1px, transparent 0);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 25%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 25%, transparent 80%);
  pointer-events: none;
  z-index: 0;
}

.section--soft > .container {
  position: relative;
  z-index: 1;
}

/* Subtle blueprint texture for plain white sections */
.section--blueprint {
  position: relative;
  overflow: hidden;
}

.section--blueprint::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 100, 230, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 100, 230, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 80%);
  pointer-events: none;
  z-index: 0;
}

.section--blueprint > .container {
  position: relative;
  z-index: 1;
}

/* Legacy aliases kept for compatibility while the HTML migrates */
.section--brand-image {
  color: var(--on-dark-text);
  background: linear-gradient(135deg, #001D3D 0%, #00458A 35%, #0064E6 70%, #00C7FF 100%);
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

.section--brand-image .section__brand-bg { display: none; }

.section--brand-image > .container {
  position: relative;
  z-index: 1;
}

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto var(--space-10);
}

.section-head__title {
  margin-bottom: var(--space-5);
}

.section-head__lead {
  font-size: var(--fs-body-lg);
  color: var(--color-text-muted);
  max-width: 620px;
  margin-inline: auto;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-eyebrow);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--letter-eyebrow);
  text-transform: uppercase;
  color: var(--brand-blue-medium);
  margin-bottom: var(--space-4);
}

.eyebrow::before {
  content: '';
  width: 22px;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 2px;
}

.eyebrow--center {
  margin-inline: auto;
}

/* Eyebrow on dark / brand-image surfaces */
.eyebrow--on-dark {
  color: var(--brand-cyan);
}

.eyebrow--on-dark::before {
  background: linear-gradient(135deg, #4DDCFF 0%, #00C7FF 100%);
}

/* Section-head modifier — used on brand-image / dark sections */
.section-head--on-dark .section-head__title,
.bg--brand-grid .section-head__title,
.bg--brand .section-head__title {
  color: var(--on-dark-text);
}

.section-head--on-dark .section-head__lead,
.bg--brand-grid .section-head__lead,
.bg--brand .section-head__lead {
  color: var(--on-dark-muted);
}

.bg--brand-grid .eyebrow,
.bg--brand .eyebrow {
  color: var(--brand-cyan);
}

.bg--brand-grid .eyebrow::before,
.bg--brand .eyebrow::before {
  background: linear-gradient(135deg, #4DDCFF 0%, #00C7FF 100%);
}

.text-gradient {
  background: var(--gradient-brand);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}