/* =========================================================================
   JCR CONSULTORES — Design System
   Paleta corporativa: azul profundo + grises técnicos + acento cian
   Arquitectura: mobile-first, custom properties, sin frameworks
   ========================================================================= */

/* ---------- Design Tokens ---------- */
:root {
  /* Colors - Light Mode (default) */
  --color-brand-900: #0a1e3f;     /* azul más oscuro */
  --color-brand-800: #10408a;     /* azul JCR original */
  --color-brand-700: #1e5bb8;     /* azul medio */
  --color-brand-600: #3b7dd8;     /* azul claro */
  --color-brand-500: #5a9bf0;     /* azul accent */
  --color-accent:    #00c2ff;     /* cian high-tech */
  --color-accent-2:  #ffb800;     /* amarillo seguridad (uso puntual) */

  --color-bg:        #ffffff;
  --color-bg-alt:    #f5f7fb;
  --color-bg-elev:   #ffffff;
  --color-surface:   #ffffff;
  --color-border:    #e3e8f0;
  --color-border-strong: #c8d1e0;

  --color-text:      #0f172a;
  --color-text-muted:#475569;
  --color-text-soft: #64748b;
  --color-text-inv:  #ffffff;

  --color-success:   #10b981;
  --color-danger:    #ef4444;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 2px 6px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.10);
  --shadow-lg: 0 20px 48px rgba(15, 23, 42, 0.14);
  --shadow-glow: 0 0 0 6px rgba(0, 194, 255, 0.15);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --radius-pill: 999px;

  /* Spacing scale (based on 4px) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Typography - fluid scale via clamp */
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --fs-xs:   clamp(0.75rem, 0.7rem + 0.2vw, 0.85rem);
  --fs-sm:   clamp(0.875rem, 0.82rem + 0.25vw, 0.95rem);
  --fs-base: clamp(1rem, 0.95rem + 0.3vw, 1.125rem);
  --fs-lg:   clamp(1.125rem, 1rem + 0.5vw, 1.35rem);
  --fs-xl:   clamp(1.35rem, 1.1rem + 1vw, 1.75rem);
  --fs-2xl:  clamp(1.75rem, 1.3rem + 2vw, 2.5rem);
  --fs-3xl:  clamp(2.25rem, 1.5rem + 3vw, 3.5rem);
  --fs-4xl:  clamp(2.75rem, 2rem + 4vw, 5rem);

  --lh-tight: 1.15;
  --lh-snug: 1.35;
  --lh-normal: 1.6;
  --lh-loose: 1.8;

  /* Layout */
  --container: 1240px;
  --container-narrow: 920px;
  --nav-h: 84px;

  /* Motion */
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast: 0.18s;
  --dur: 0.3s;
  --dur-slow: 0.6s;

  color-scheme: light;
}

/* ---------- Dark Mode ---------- */
:root[data-theme="dark"] {
  --color-bg:        #0a1020;
  --color-bg-alt:    #0f172a;
  --color-bg-elev:   #141e38;
  --color-surface:   #162340;
  --color-border:    #253454;
  --color-border-strong: #334668;

  --color-text:      #e8edf7;
  --color-text-muted:#a7b3cc;
  --color-text-soft: #7e8ba8;
  --color-text-inv:  #0a1020;

  --color-brand-800: #3b7dd8;
  --color-brand-700: #5a9bf0;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.55);

  color-scheme: dark;
}

/* Respect user preference if no manual choice */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:        #0a1020;
    --color-bg-alt:    #0f172a;
    --color-bg-elev:   #141e38;
    --color-surface:   #162340;
    --color-border:    #253454;
    --color-border-strong: #334668;

    --color-text:      #e8edf7;
    --color-text-muted:#a7b3cc;
    --color-text-soft: #7e8ba8;
    --color-text-inv:  #0a1020;

    --color-brand-800: #3b7dd8;
    --color-brand-700: #5a9bf0;

    color-scheme: dark;
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--nav-h) + 1rem);
}

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

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  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;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
  overflow-x: hidden;
}

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

a {
  color: var(--color-brand-700);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}

a:hover {
  color: var(--color-accent);
}

button {
  font: inherit;
  cursor: pointer;
  border: 0;
  background: none;
  color: inherit;
}

ul, ol { list-style: none; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  color: var(--color-text);
}

h1 { font-size: var(--fs-4xl); }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-2xl); }
h4 { font-size: var(--fs-xl); }
h5 { font-size: var(--fs-lg); }

p { color: var(--color-text-muted); }

/* Focus styles */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Selection */
::selection {
  background: var(--color-accent);
  color: var(--color-brand-900);
}

/* ---------- Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

.container-narrow {
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

.section {
  padding-block: clamp(3.5rem, 8vw, 7rem);
}

.section-sm {
  padding-block: clamp(2rem, 5vw, 4rem);
}

.text-center { text-align: center; }
.text-balance { text-wrap: balance; }
.text-pretty { text-wrap: pretty; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  padding: var(--space-2) var(--space-4);
  background: color-mix(in srgb, var(--color-accent) 10%, transparent);
  border-radius: var(--radius-pill);
  border: 1px solid color-mix(in srgb, var(--color-accent) 25%, transparent);
  margin-bottom: var(--space-6);
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent);
  animation: pulse 2s var(--ease) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

/* Section heading block */
.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto var(--space-16);
}

.section-head h2 {
  margin-bottom: var(--space-4);
}

.section-head p {
  font-size: var(--fs-lg);
  color: var(--color-text-muted);
}

/* Gradient text */
.gradient-text {
  background: linear-gradient(135deg, var(--color-brand-700) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.9rem 1.75rem;
  font-weight: 600;
  font-size: var(--fs-base);
  border-radius: var(--radius-pill);
  transition: all var(--dur) var(--ease);
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  line-height: 1;
  position: relative;
  overflow: hidden;
}

.btn svg {
  width: 1.1em;
  height: 1.1em;
  transition: transform var(--dur) var(--ease);
}

.btn:hover svg { transform: translateX(3px); }

.btn-primary {
  background: linear-gradient(135deg, var(--color-brand-800), var(--color-brand-700));
  color: #fff;
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255,255,255,0.2);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-brand-700), var(--color-accent));
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 0 4px color-mix(in srgb, var(--color-accent) 20%, transparent);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-ghost:hover {
  background: var(--color-bg-alt);
  color: var(--color-brand-700);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-brand-900);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--color-accent) 40%, transparent);
}

.btn-accent:hover {
  filter: brightness(1.08);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 1.1rem 2.25rem;
  font-size: var(--fs-lg);
}

.btn-sm {
  padding: 0.55rem 1.15rem;
  font-size: var(--fs-sm);
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all var(--dur) var(--ease);
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: color-mix(in srgb, var(--color-accent) 40%, var(--color-border));
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--color-brand-700) 15%, transparent),
    color-mix(in srgb, var(--color-accent) 15%, transparent));
  color: var(--color-brand-700);
  margin-bottom: var(--space-5);
}

.card-icon svg { width: 28px; height: 28px; }

/* ---------- Navbar ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  background: color-mix(in srgb, var(--color-bg) 70%, transparent);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border-bottom: 1px solid transparent;
  z-index: 100;
  transition: all var(--dur) var(--ease);
}

.nav.scrolled {
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  border-bottom-color: var(--color-border);
  box-shadow: 0 10px 30px -10px rgba(10, 22, 60, 0.15);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-6);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-lg);
  letter-spacing: -0.02em;
  color: var(--color-text);
  flex-shrink: 0;
}

.nav__brand:hover { color: var(--color-brand-700); }

.nav__brand-logo {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  background: radial-gradient(circle at 30% 30%, #fff, #e8f0ff);
  padding: 4px;
  box-shadow:
    0 4px 12px -2px rgba(0, 194, 255, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.nav__brand:hover .nav__brand-logo {
  transform: rotate(-8deg) scale(1.06);
  box-shadow:
    0 6px 20px -2px rgba(0, 194, 255, 0.6),
    0 0 0 1px rgba(0, 194, 255, 0.4);
}

.nav__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.nav__brand-text small {
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-text-soft);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 3px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__links a {
  position: relative;
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--dur-fast) var(--ease);
}

.nav__links a:hover {
  color: var(--color-text);
  background: var(--color-bg-alt);
}

.nav__links a.active {
  color: var(--color-brand-700);
}

.nav__links a.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 24px;
  height: 3px;
  background: var(--color-accent);
  border-radius: var(--radius-pill);
  transform: translateX(-50%);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid transparent;
  transition: all var(--dur-fast) var(--ease);
}

.icon-btn:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
  border-color: var(--color-border);
}

.icon-btn svg {
  width: 20px;
  height: 20px;
}

/* Lang toggle */
.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 3px;
  background: var(--color-bg-alt);
}

.lang-toggle button {
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  transition: all var(--dur-fast) var(--ease);
  letter-spacing: 0.05em;
}

.lang-toggle button.active {
  background: var(--color-brand-800);
  color: #fff;
}

/* Theme toggle */
.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: block; }
:root[data-theme="dark"] .theme-toggle .sun { display: block; }
:root[data-theme="dark"] .theme-toggle .moon { display: none; }

/* Burger for mobile */
.nav__burger {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

.nav__burger svg { width: 24px; height: 24px; }

.nav__burger .close-ic { display: none; }
.nav.menu-open .nav__burger .burger-ic { display: none; }
.nav.menu-open .nav__burger .close-ic { display: block; }

@media (max-width: 960px) {
  .nav__links {
    position: fixed;
    top: var(--nav-h);
    right: 0;
    left: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-6);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--dur) var(--ease);
    max-height: calc(100vh - var(--nav-h));
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
  }

  .nav.menu-open .nav__links {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__links a {
    padding: var(--space-4);
    font-size: var(--fs-lg);
    border-bottom: 1px solid var(--color-border);
  }

  .nav__links a.active::after { display: none; }
  .nav__links a.active {
    background: color-mix(in srgb, var(--color-brand-700) 8%, transparent);
    border-left: 3px solid var(--color-accent);
    padding-left: calc(var(--space-4) - 3px);
  }

  .nav__burger {
    display: inline-flex;
  }
}

/* ---------- Page header (sub pages) ---------- */
.page-header {
  position: relative;
  padding-top: calc(var(--nav-h) + var(--space-20));
  padding-bottom: var(--space-20);
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(ellipse at top, color-mix(in srgb, var(--color-brand-700) 15%, transparent), transparent 70%),
    linear-gradient(180deg, var(--color-bg-alt), var(--color-bg));
}

.page-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 125, 216, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 125, 216, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 80%);
  pointer-events: none;
}

.page-header > * { position: relative; }

.page-header h1 {
  font-size: clamp(2.5rem, 1.8rem + 3.5vw, 4.5rem);
  margin-bottom: var(--space-5);
}

.page-header p {
  font-size: var(--fs-lg);
  color: var(--color-text-muted);
  max-width: 720px;
  margin: 0 auto;
}

.breadcrumbs {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  color: var(--color-text-soft);
  margin-bottom: var(--space-6);
  font-family: var(--font-mono);
}

.breadcrumbs a { color: var(--color-text-soft); }
.breadcrumbs a:hover { color: var(--color-accent); }
.breadcrumbs span { color: var(--color-accent); }

/* ---------- Footer ---------- */
.footer {
  background: var(--color-brand-900);
  color: #cbd5e1;
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg,
    var(--color-brand-700),
    var(--color-accent),
    var(--color-brand-700));
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

@media (max-width: 880px) {
  .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
}

@media (max-width: 520px) {
  .footer__grid { grid-template-columns: 1fr; }
}

.footer h4 {
  color: #fff;
  font-size: var(--fs-base);
  margin-bottom: var(--space-5);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.footer ul { display: flex; flex-direction: column; gap: var(--space-3); }

.footer a {
  color: #94a3b8;
  font-size: var(--fs-sm);
  transition: color var(--dur-fast) var(--ease);
}

.footer a:hover { color: var(--color-accent); }

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-lg);
}

.footer__brand img {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
}

.footer__desc {
  color: #94a3b8;
  font-size: var(--fs-sm);
  line-height: var(--lh-normal);
  margin-bottom: var(--space-5);
  max-width: 320px;
}

.footer__social {
  display: flex;
  gap: var(--space-2);
}

.footer__social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.05);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.1);
}

.footer__social a:hover {
  background: var(--color-accent);
  color: var(--color-brand-900);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.footer__social svg { width: 18px; height: 18px; }

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  color: #cbd5e1;
  font-size: var(--fs-sm);
  margin-bottom: var(--space-3);
}

.footer__contact-item svg {
  width: 18px; height: 18px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer__contact-item a {
  color: #cbd5e1;
}

.footer__contact-item a:hover { color: var(--color-accent); }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--fs-sm);
  color: #64748b;
}

/* ---------- WhatsApp floating button ---------- */
.wa-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 50;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #25D366;
  color: #fff;
  border-radius: 50%;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  transition: all var(--dur) var(--ease);
}

.wa-float::before {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 2px solid #25D366;
  opacity: 0.6;
  animation: wa-pulse 2.2s var(--ease) infinite;
}

@keyframes wa-pulse {
  0% { transform: scale(0.9); opacity: 0.6; }
  100% { transform: scale(1.5); opacity: 0; }
}

.wa-float:hover {
  background: #1fad54;
  color: #fff;
  transform: scale(1.08);
}

.wa-float svg { width: 30px; height: 30px; }

@media (max-width: 520px) {
  .wa-float {
    width: 54px; height: 54px;
    bottom: 18px; right: 18px;
  }
  .wa-float svg { width: 26px; height: 26px; }
}

/* ---------- Scroll reveal helper ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.4s; }

/* ---------- Grid helpers ---------- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-6);
}

/* ---------- Skip link (a11y) ---------- */
.skip-link {
  position: absolute;
  top: -60px;
  left: 1rem;
  background: var(--color-brand-800);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 200;
  transition: top var(--dur) var(--ease);
  font-weight: 600;
}

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