/* ============================================
   KERNVOLT — main.css
   Design system, base styles, layout
   kernvolt.com
   ============================================ */

/* ── 1. CUSTOM PROPERTIES ─────────────────── */
:root {
  --color-black:      #0A0A0A;
  --color-white:      #FFFFFF;
  --color-gray-50:    #F5F5F5;
  --color-gray-100:   #E8E8E8;
  --color-gray-200:   #CCCCCC;
  --color-gray-500:   #888888;
  --color-gray-700:   #555555;
  --color-gray-900:   #111111;

  --bg-primary:       #0A0A0A;
  --bg-secondary:     #111111;
  --bg-surface:       rgba(255,255,255,0.05);
  --bg-surface-hover: rgba(255,255,255,0.08);
  --border-color:     rgba(255,255,255,0.08);
  --border-hover:     rgba(255,255,255,0.16);

  --text-primary:   #FFFFFF;
  --text-secondary: #888888;
  --text-tertiary:  #444444;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --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;
  --space-32: 8rem;

  --container-max: 1200px;
  --container-pad: 1.5rem;
  --section-py:    var(--space-24);

  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
  --transition-spring: 350ms cubic-bezier(0.34, 1.56, 0.64, 1);

  --shadow-sm:  0 1px 2px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 20px rgba(0,0,0,0.10);
  --shadow-lg:  0 8px 40px rgba(0,0,0,0.15);

  --header-height: 68px;
}

/* ── 2. RESET ─────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

main {
  position: relative;
  z-index: 1;
  background: transparent;
}

img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
ul, ol { list-style: none; }
input, textarea, select { font-family: inherit; }
svg { display: block; }

/* ── 3. TYPOGRAPHY ────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.025em;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.75rem); }
h2 { font-size: clamp(1.75rem, 4vw, 3rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
  line-height: 1.7;
  color: var(--text-secondary);
}

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

.section          { padding-block: var(--section-py); }
.section-sm       { padding-block: var(--space-16); }
.section-lg       { padding-block: calc(var(--section-py) * 1.4); }
.section-border-t { border-top: 1px solid var(--border-color); }
.section-alt      { background: var(--bg-secondary); }

/* Section header */
.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.section-header {
  margin-bottom: var(--space-12);
}

.section-header h2 { margin-bottom: var(--space-3); }
.section-header p  { font-size: 1.125rem; max-width: 540px; }

.section-header.centered {
  text-align: center;
}
.section-header.centered p { margin-inline: auto; }

.section-header.spread {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-6);
  max-width: 100%;
}

/* Grids */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }

/* ── 5. BUTTONS ───────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-primary {
  background: #FFFFFF;
  color: #0A0A0A;
  border: none;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.08),
    0 4px 24px rgba(0,0,0,0.4),
    0 1px 2px rgba(0,0,0,0.6);
  transition: box-shadow 0.3s ease, transform 0.2s ease, background var(--transition-base);
}
.btn-primary:hover {
  background: #E8E8E8;
  transform: translateY(-1px);
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.12),
    0 8px 40px rgba(0,0,0,0.5),
    0 2px 4px rgba(0,0,0,0.6);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: transparent;
  color: rgba(255,255,255,0.85);
  border: 1px solid rgba(255,255,255,0.20);
  box-shadow: none;
  transition: box-shadow 0.3s ease, transform 0.2s ease, background var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.40);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: none;
}

.btn-sm  { padding: 0.5rem 1rem;    font-size: 0.875rem; border-radius: var(--radius-sm); }
.btn-lg  { padding: 0.9rem 1.875rem; font-size: 1rem; }
.btn-xl  { padding: 1.1rem 2.25rem; font-size: 1.0625rem; border-radius: 999px; }

.btn-ghost {
  color: var(--text-secondary);
  padding: 0.5rem 0;
}
.btn-ghost:hover { color: var(--text-primary); }

/* Light-section button overrides (noop — secondary already uses white bg) */

/* Nav badge — e.g. "Nuevo" pill on VOLT link */
.nav-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.45rem;
  background: #00E5C8;
  color: #0A0A0A;
  border-radius: var(--radius-full);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-left: 0.35rem;
  vertical-align: middle;
  line-height: 1;
}

/* ── 6. CARDS ─────────────────────────────── */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-base);
}
.card:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ── 7. TAG PILL ──────────────────────────── */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

/* ── 8. HEADER ────────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background var(--transition-base),
              border-color var(--transition-base),
              transform var(--transition-base);
}

.site-header.scrolled {
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border-color);
}

.site-header.header-hidden {
  transform: translateY(-100%);
}

.site-header .container { width: 100%; }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

/* Logo */
.logo-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}
.logo-link:hover { opacity: 0.65; }

.logo-img {
  height: 52px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
  mix-blend-mode: normal;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}
.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: var(--bg-surface);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}
.hamburger:hover { background: var(--bg-surface); }

.hamburger-line {
  display: block;
  width: 100%;
  height: 1.5px;
  background: #FFFFFF;
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.hamburger-active .hamburger-line:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger-active .hamburger-line:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger-active .hamburger-line:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── 9. FOOTER ────────────────────────────── */
.site-footer {
  background: #111111;
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--text-secondary);
  max-width: 220px;
  margin-top: var(--space-4);
  margin-bottom: var(--space-5);
  line-height: 1.6;
}

.footer-social {
  display: flex;
  gap: var(--space-3);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.social-link:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  background: var(--bg-surface);
}
.social-link svg { width: 16px; height: 16px; }

.footer-nav-title {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer-nav-list a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}
.footer-nav-list a:hover { color: var(--text-primary); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-color);
}

.footer-copy,
.footer-made {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  line-height: 1;
}

/* ── 10. WHATSAPP FAB ─────────────────────── */
.whatsapp-fab {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 90;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #25D366;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  transition: all var(--transition-spring);
}
.whatsapp-fab:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 8px 28px rgba(37,211,102,0.5);
}
.whatsapp-fab svg { width: 26px; height: 26px; }

/* ── 11. HERO ─────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
  background: transparent;
}

/* Vanta NET canvas container */
#vanta-hero {
  position: absolute;
  inset: 0;
  z-index: 0;
}

/* Aurora blobs via pseudo-elements — encima de Vanta */
.hero::before,
.hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
  opacity: 0.30;
  z-index: 1;
}

.hero::before {
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, #00E5C8 0%, #00B4A0 40%, transparent 70%);
  top: -20%;
  left: -15%;
  animation: aurora-move 14s ease-in-out infinite;
}

.hero::after {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #003D35 0%, #00B4A0 50%, transparent 70%);
  bottom: -25%;
  right: -10%;
  animation: aurora-move-2 18s ease-in-out infinite 2s;
}

@keyframes aurora-move {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(8%, 12%) scale(1.08); }
  66%       { transform: translate(-5%, 6%) scale(0.95); }
}

@keyframes aurora-move-2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  40%       { transform: translate(-10%, -8%) scale(1.1); }
  70%       { transform: translate(5%, -5%) scale(0.92); }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 840px;
  margin-inline: auto;
  padding-block: var(--space-20);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.375rem 1rem;
  border: 1px solid rgba(0,229,200,0.25);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  margin-bottom: var(--space-8);
  background: rgba(0,229,200,0.06);
}

.hero-eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #00E5C8;
  flex-shrink: 0;
}

.hero-headline {
  font-size: clamp(2.8rem, 7.5vw, 5.25rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.04;
  margin-bottom: var(--space-6);
  color: #FFFFFF;
}

.hero-headline em {
  font-style: normal;
  color: #00E5C8;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255,255,255,0.6);
  max-width: 520px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* Floating particles */
.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 1;
}

.particle {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0,229,200,0.12);
  background: rgba(0,229,200,0.04);
}

.p1 { width: 160px; height: 160px; top: 10%; left: 3%;   animation: float-a 10s ease-in-out infinite; }
.p2 { width: 80px;  height: 80px;  top: 68%; left: 1%;   animation: float-b 7s  ease-in-out infinite 1.5s; }
.p3 { width: 110px; height: 110px; top: 18%; right: 4%;  animation: float-b 9s  ease-in-out infinite 0.5s; }
.p4 { width: 55px;  height: 55px;  top: 72%; right: 2%;  animation: float-a 6s  ease-in-out infinite 2s; }
.p5 { width: 22px;  height: 22px;  top: 45%; left: 11%;  animation: float-b 5s  ease-in-out infinite 1s; }
.p6 { width: 14px;  height: 14px;  top: 55%; right: 14%; animation: float-a 4s  ease-in-out infinite 0.8s; }

/* Floating service badges */
.float-badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(0,229,200,0.18);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  white-space: nowrap;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.float-badge svg { width: 16px; height: 16px; color: #00E5C8; flex-shrink: 0; }

.fb1 { top: 24%;    left: 4%;   animation: badge-a 11s ease-in-out infinite; }
.fb2 { bottom: 30%; left: 5%;   animation: badge-b 13s ease-in-out infinite 1s; }
.fb3 { top: 30%;    right: 4%;  animation: badge-a 10s ease-in-out infinite 2s; }
.fb4 { bottom: 34%; right: 4%;  animation: badge-b 12s ease-in-out infinite 0.5s; }

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  opacity: 0.4;
  transition: opacity var(--transition-base);
  z-index: 2;
}

.hero-scroll-line {
  display: block;
  width: 1px;
  height: 52px;
  background: linear-gradient(to bottom, transparent, rgba(0,229,200,0.6));
  animation: scroll-pulse 2.2s ease-in-out infinite;
}

/* ── Home-page header overrides (dark hero) ── */
.home-page .site-header:not(.scrolled) .nav-link {
  color: rgba(255,255,255,0.75);
}
.home-page .site-header:not(.scrolled) .nav-link:hover {
  color: #FFFFFF;
}
.home-page .site-header:not(.scrolled) .logo-img {
  filter: brightness(0) invert(1);
}
.home-page .site-header:not(.scrolled) .nav-actions .btn-primary {
  background: transparent;
  color: #FFFFFF;
  border-color: rgba(255,255,255,0.4);
}
.home-page .site-header:not(.scrolled) .nav-actions .btn-primary:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
}

/* ── 12. HOME SECTIONS ────────────────────── */
.services-grid  { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }
.portfolio-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }

.clients-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  align-items: center;
}

.client-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: var(--space-4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  aspect-ratio: 16/7;
  width: 160px;
  background: var(--bg-surface);
  transition: all var(--transition-base);
  color: var(--text-tertiary);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: center;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.client-logo::after {
  content: '↗ Instagram';
  position: absolute;
  bottom: -20px;
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: #00E5C8;
  opacity: 0;
  transition: all var(--transition-base);
}
.client-logo:hover {
  border-color: rgba(0,229,200,0.35);
  background: rgba(0,229,200,0.05);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0,229,200,0.08);
}
.client-logo:hover::after {
  bottom: 6px;
  opacity: 1;
}
.client-logo:hover span,
.client-logo:hover {
  transform: translateY(-2px);
}

.client-logo-img { padding: var(--space-3); }
.client-logo-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.55;
  transition: opacity var(--transition-base);
}
.client-logo-img:hover img { opacity: 0.9; }

/* Stats bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.stat-item { text-align: center; padding: var(--space-4); }

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* CTA section */
.cta-section {
  text-align: center;
  padding-block: var(--space-32);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 55% 60% at 50% 50%, rgba(0,0,0,0.03) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section h2 { margin-bottom: var(--space-4); }
.cta-section p {
  font-size: 1.125rem;
  max-width: 460px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
}

.btn-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ── 13. SCROLL ANIMATIONS ────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

.fade-in {
  opacity: 0;
  transition: opacity 0.65s ease;
}
.fade-in.visible { opacity: 1; }

.stagger > * {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.stagger.visible > *:nth-child(1) { transition-delay: 0ms; }
.stagger.visible > *:nth-child(2) { transition-delay: 70ms; }
.stagger.visible > *:nth-child(3) { transition-delay: 140ms; }
.stagger.visible > *:nth-child(4) { transition-delay: 210ms; }
.stagger.visible > *:nth-child(5) { transition-delay: 280ms; }
.stagger.visible > *:nth-child(6) { transition-delay: 350ms; }
.stagger.visible > * { opacity: 1; transform: translateY(0); }

/* Hero entrance */
.hero-content > * {
  opacity: 0;
  transform: translateY(18px);
}

.hero-ready .hero-content > *:nth-child(1) { animation: hero-in 0.7s ease forwards 0.1s; }
.hero-ready .hero-content > *:nth-child(2) { animation: hero-in 0.7s ease forwards 0.22s; }
.hero-ready .hero-content > *:nth-child(3) { animation: hero-in 0.7s ease forwards 0.36s; }
.hero-ready .hero-content > *:nth-child(4) { animation: hero-in 0.7s ease forwards 0.5s; }

/* ── 14. KEYFRAMES ────────────────────────── */
@keyframes hero-in {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes float-a {
  0%, 100% { transform: translateY(0)    rotate(0deg); }
  50%       { transform: translateY(-22px) rotate(5deg); }
}

@keyframes float-b {
  0%, 100% { transform: translateY(0)    rotate(0deg); }
  50%       { transform: translateY(-14px) rotate(-4deg); }
}

@keyframes badge-a {
  0%, 100% { transform: translateY(0)    translateX(0); }
  33%       { transform: translateY(-12px) translateX(5px); }
  66%       { transform: translateY(-5px)  translateX(-3px); }
}

@keyframes badge-b {
  0%, 100% { transform: translateY(0)    translateX(0); }
  33%       { transform: translateY(-8px)  translateX(-6px); }
  66%       { transform: translateY(-16px) translateX(4px); }
}

@keyframes scroll-pulse {
  0%   { transform: scaleY(0); transform-origin: top;    opacity: 1; }
  50%  { transform: scaleY(1); transform-origin: top;    opacity: 1; }
  51%  { transform: scaleY(1); transform-origin: bottom; opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ── 15. UTILITIES ────────────────────────── */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0; }
.text-center  { text-align: center; }
.text-muted   { color: var(--text-secondary); }
.font-bold    { font-weight: 700; }
.font-black   { font-weight: 800; }
.relative     { position: relative; }
.overflow-h   { overflow: hidden; }
.mt-auto      { margin-top: auto; }
.divider      { height: 1px; background: var(--border-color); border: none; margin-block: 0; }

/* ── 16. PAGE HERO (inner pages) ─────────── */
.page-hero {
  padding-top: calc(var(--header-height) + var(--space-20));
  padding-bottom: var(--space-16);
  border-bottom: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.page-hero::before,
.page-hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
  opacity: 0.25;
  z-index: 0;
}

.page-hero::before {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #00E5C8 0%, #00B4A0 40%, transparent 70%);
  top: -40%;
  left: -10%;
}

.page-hero::after {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #003D35 0%, #00B4A0 50%, transparent 70%);
  top: -30%;
  right: -8%;
}

.page-hero .container { position: relative; z-index: 1; }

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--space-4);
  max-width: 760px;
}

.page-hero p {
  font-size: 1.125rem;
  max-width: 560px;
}

.page-hero.centered { text-align: center; }
.page-hero.centered h1,
.page-hero.centered p { margin-inline: auto; }

/* Service anchors nav */
.services-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-8);
}

.services-nav a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.services-nav a:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  background: var(--bg-surface);
}

/* ── 17. RESPONSIVE ───────────────────────── */
@media (max-width: 1024px) {
  :root { --section-py: var(--space-20); --container-pad: 1.25rem; }
  .services-grid  { grid-template-columns: repeat(2, 1fr); }
  .clients-grid   { gap: var(--space-3); }
  .footer-grid    { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .fb1, .fb2, .fb3, .fb4 { display: none; }
}

@media (max-width: 768px) {
  #hero-eclipse {
    position: relative;
    right: auto;
    top: auto;
    bottom: auto;
    transform: none;
    width: 280px;
    height: 280px;
    margin: var(--space-10) auto 0;
    animation: eclipse-glow 3s ease-in-out infinite; /* sin float en mobile */
  }
}

@media (max-width: 768px) {
  :root { --section-py: var(--space-16); --container-pad: 1rem; --header-height: 60px; }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0; right: 0;
    background: rgba(10,10,10,0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-4);
    gap: var(--space-2);
    border-bottom: 1px solid var(--border-color);
    z-index: 99;
  }
  .nav-links.nav-open { display: flex; }
  .nav-link { padding: 0.75rem 1rem; font-size: 1rem; }
  .hamburger { display: flex; }
  .nav-actions .btn-primary { display: none; }

  .services-grid, .portfolio-grid, .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .clients-grid { gap: var(--space-2); }
  .client-logo  { width: 130px; font-size: 0.65rem; letter-spacing: 0.04em; padding: var(--space-3); }
  .client-logo::after { display: none; } /* sin hover tooltip en touch */

  .stats-bar    { grid-template-columns: repeat(2, 1fr); }

  .footer-grid   { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer-bottom { flex-direction: column; gap: var(--space-2); text-align: center; }

  .section-header.spread {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-section { padding-block: var(--space-20); }

  /* Hero buttons: apilados en pantallas chicas */
  .hero-actions {
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
  }
  .hero-actions .btn {
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }

  /* Hero content: menos padding en mobile */
  .hero-content { padding-block: var(--space-12) var(--space-10); }

  /* Sección CTA: botones apilados */
  .btn-group {
    flex-direction: column;
    align-items: center;
  }
  .btn-group .btn {
    width: 100%;
    max-width: 320px;
  }

  /* Page hero: menos espacio */
  .page-hero {
    padding-top: calc(var(--header-height) + var(--space-12));
    padding-bottom: var(--space-10);
  }

  .p1, .p2, .p3, .p4 { display: none; }
}

/* ── 18. SMALL PHONES (≤ 420px) ──────────────── */
@media (max-width: 420px) {
  .client-logo  { width: 110px; font-size: 0.6rem; }

  h1 { font-size: clamp(2rem, 8vw, 2.5rem); }
  h2 { font-size: clamp(1.5rem, 6vw, 2rem); }

  .stat-number { font-size: 2rem; }

  .hero-eyebrow { font-size: 0.65rem; padding: 0.3rem 0.75rem; }
}