/* ARCE Systems — Design System 2026 */

:root {
  --navy-900: #0a1628;
  --navy-800: #0f2137;
  --navy-700: #1b3a5c;
  --cyan-600: #0077b6;
  --cyan-500: #0096d6;
  --cyan-400: #00aeef;
  --cyan-100: #e0f4ff;
  --silver-500: #64748b;
  --silver-400: #94a3b8;
  --silver-200: #e2e8f0;
  --surface-0: #ffffff;
  --surface-50: #f8fafc;
  --surface-100: #f1f5f9;
  --success: #059669;
  --error: #dc2626;
  --gradient-brand: linear-gradient(135deg, #00aeef 0%, #1b3a5c 100%);
  --gradient-hero: linear-gradient(135deg, rgba(0, 174, 239, 0.08) 0%, rgba(27, 58, 92, 0.04) 100%);
  --shadow-sm: 0 1px 2px rgba(10, 22, 40, 0.06);
  --shadow-md: 0 4px 24px rgba(10, 22, 40, 0.08);
  --shadow-lg: 0 12px 48px rgba(10, 22, 40, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --font-display: "Sora", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --header-h: 72px;
  --container: min(1140px, calc(100% - 2rem));
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--navy-800);
  background: var(--surface-0);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--cyan-600); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--cyan-400); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  color: var(--navy-900);
  margin: 0 0 1rem;
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.625rem, 3.5vw, 2.375rem); letter-spacing: -0.015em; }
h3 { font-size: 1.125rem; }

p { margin: 0 0 1rem; color: var(--silver-500); }
ul { margin: 0; padding: 0; list-style: none; }

.container { width: var(--container); margin-inline: auto; }

.eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cyan-600);
  margin-bottom: 0.75rem;
}

.section {
  padding: clamp(4rem, 8vw, 6.5rem) 0;
}

.section--alt { background: var(--surface-50); }

.section-header {
  max-width: 640px;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

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

.section-header p { font-size: 1.0625rem; }

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  padding: 0.75rem 1rem;
  background: var(--navy-900);
  color: #fff;
  border-radius: var(--radius-sm);
}
.skip-link:focus { top: 1rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 4px 16px rgba(0, 150, 214, 0.35);
}
.btn--primary:hover { color: #fff; box-shadow: 0 8px 24px rgba(0, 150, 214, 0.4); }
.btn--outline {
  background: transparent;
  border-color: var(--silver-200);
  color: var(--navy-900);
}
.btn--outline:hover { border-color: var(--cyan-500); color: var(--cyan-600); background: var(--cyan-100); }
.btn--ghost {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border-color: rgba(255,255,255,0.25);
  backdrop-filter: blur(8px);
}
.btn--ghost:hover { background: rgba(255,255,255,0.2); color: #fff; }
.btn--whatsapp { background: #25d366; color: #fff; }
.btn--whatsapp:hover { color: #fff; background: #20bd5a; }
.btn--sm { padding: 0.625rem 1.125rem; font-size: 0.875rem; }

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}
.header.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 1rem;
}
.header__logo img { height: 56px; width: auto; }
.nav { display: flex; align-items: center; gap: 0.25rem; }
.nav__list {
  display: flex;
  align-items: center;
  gap: 0.125rem;
}
.nav__link {
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--navy-800);
  border-radius: var(--radius-sm);
}
.nav__link:hover, .nav__link.is-active { color: var(--cyan-600); background: var(--cyan-100); }
.nav__cta { margin-left: 0.5rem; }
.nav__toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  color: var(--navy-900);
}
.nav__toggle svg { width: 24px; height: 24px; }

@media (max-width: 991px) {
  .nav__toggle { display: block; }
  .nav__list {
    display: none;
    position: fixed;
    inset: var(--header-h) 0 0 0;
    flex-direction: column;
    align-items: stretch;
    padding: 1.5rem;
    background: var(--surface-0);
    overflow-y: auto;
    gap: 0.25rem;
  }
  .nav.is-open .nav__list { display: flex; }
  .nav__link { padding: 0.875rem 1rem; font-size: 1rem; }
  .nav__cta { margin: 1rem 0 0; }
  .nav__cta .btn { width: 100%; }
}

/* Hero */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 3rem) 0 4rem;
  overflow: hidden;
  background: var(--gradient-hero);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(0, 174, 239, 0.12), transparent),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(27, 58, 92, 0.06), transparent);
  pointer-events: none;
}
.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  background: var(--surface-0);
  border: 1px solid var(--silver-200);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--silver-500);
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.hero__badge-dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.hero__lead {
  font-size: clamp(1.0625rem, 2vw, 1.1875rem);
  max-width: 520px;
  margin-bottom: 2rem;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}
.hero__metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--silver-200);
}
.hero__metric strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--navy-900);
}
.hero__metric span { font-size: 0.8125rem; color: var(--silver-400); }
.hero__visual {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/3;
  background: var(--navy-900);
}
.hero__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__visual-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 22, 40, 0.5), transparent 50%);
}
.hero__visual-card {
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem;
  right: 1.25rem;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.hero__visual-card svg { flex-shrink: 0; color: var(--cyan-500); }
.hero__visual-card p { margin: 0; font-size: 0.875rem; font-weight: 500; color: var(--navy-900); }

@media (max-width: 991px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { order: -1; max-height: 280px; aspect-ratio: 16/10; }
}

/* Logo marquee */
.logos { padding: 2rem 0; border-block: 1px solid var(--silver-200); background: var(--surface-0); overflow: hidden; }
.logos__label {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--silver-400);
  margin-bottom: 1.25rem;
}
.logos__track {
  display: flex;
  width: max-content;
  animation: marquee 40s linear infinite;
}
.logos__track:hover { animation-play-state: paused; }
.logos__slide {
  display: flex;
  align-items: center;
  gap: 3rem;
  padding-right: 3rem;
}
.logos__slide img {
  height: 36px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
  filter: grayscale(100%) opacity(0.55);
  transition: filter var(--transition);
}
.logos__slide img:hover { filter: grayscale(0%) opacity(1); }
@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* Cards grid */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }

@media (max-width: 991px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .grid-2, .grid-4 { grid-template-columns: 1fr; }
}

.card {
  padding: 1.5rem;
  background: var(--surface-0);
  border: 1px solid var(--silver-200);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 150, 214, 0.25);
}
.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--cyan-100);
  border-radius: var(--radius-md);
  color: var(--cyan-600);
  margin-bottom: 1rem;
}
.card__icon img { width: 32px; height: 32px; object-fit: contain; }
.card__icon svg { width: 24px; height: 24px; }
.card h3 { margin-bottom: 0.5rem; color: var(--navy-900); }
.card p { font-size: 0.9375rem; margin: 0; }

/* Bento services */
.bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-template-rows: auto auto;
  gap: 1.25rem;
}
.bento__item {
  padding: 1.75rem;
  background: var(--surface-0);
  border: 1px solid var(--silver-200);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.bento__item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.bento__item--iso { grid-column: span 7; }
.bento__item--infra { grid-column: span 5; }
.bento__item--oea { grid-column: span 5; }
.bento__item--dev { grid-column: span 7; }
.bento__item-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}
.bento__item-header img { width: 56px; height: 56px; object-fit: contain; }
.bento__item h3 { font-size: 1.25rem; margin: 0; }
.bento__item p { flex: 1; font-size: 0.9375rem; margin-bottom: 1rem; }
.bento__link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--cyan-600);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: auto;
}
.bento__link:hover { gap: 0.5rem; }

@media (max-width: 991px) {
  .bento__item--iso, .bento__item--infra,
  .bento__item--oea, .bento__item--dev { grid-column: span 12; }
}

/* Benefits */
.benefits-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.benefit-item {
  display: flex;
  gap: 0.875rem;
  padding: 1rem 1.25rem;
  background: var(--surface-0);
  border-radius: var(--radius-md);
  border: 1px solid var(--silver-200);
}
.benefit-item svg { flex-shrink: 0; color: var(--cyan-500); margin-top: 2px; }
.benefit-item strong { display: block; font-size: 0.9375rem; color: var(--navy-900); margin-bottom: 0.125rem; }
.benefit-item span { font-size: 0.8125rem; color: var(--silver-500); }

@media (max-width: 640px) { .benefits-list { grid-template-columns: 1fr; } }

/* Pills */
.pills { display: flex; flex-wrap: wrap; gap: 0.625rem; }
.pill {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--navy-800);
  background: var(--surface-0);
  border: 1px solid var(--silver-200);
  border-radius: 999px;
  transition: background var(--transition), border-color var(--transition);
}
.pill:hover { background: var(--cyan-100); border-color: var(--cyan-400); color: var(--cyan-600); }

/* Cases */
.case-card {
  padding: 1.75rem;
  background: var(--surface-0);
  border: 1px solid var(--silver-200);
  border-radius: var(--radius-lg);
  height: 100%;
}
.case-card__tag {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--cyan-600);
  margin-bottom: 0.75rem;
}
.case-card dl { margin: 1rem 0 0; }
.case-card dt { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; color: var(--silver-400); margin-top: 0.75rem; }
.case-card dd { margin: 0.25rem 0 0; font-size: 0.9375rem; color: var(--navy-800); }
.case-note { font-size: 0.8125rem; color: var(--silver-400); font-style: italic; margin-top: 1.5rem; }

/* Tech split */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.split__img {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.split__img img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.tech-badges { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.5rem; }
.tech-badge {
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 500;
  background: var(--surface-100);
  border-radius: var(--radius-sm);
  color: var(--navy-800);
}

@media (max-width: 991px) { .split { grid-template-columns: 1fr; } }

/* Certifications */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}
.cert-card {
  text-align: center;
  padding: 2rem 1.25rem;
  background: var(--surface-0);
  border: 1px solid var(--silver-200);
  border-radius: var(--radius-lg);
}
.cert-card svg { width: 40px; height: 40px; color: var(--cyan-500); margin: 0 auto 1rem; }
.cert-card h3 { font-size: 1rem; margin-bottom: 0.5rem; }
.cert-card p { font-size: 0.8125rem; margin: 0; }

@media (max-width: 768px) { .cert-grid { grid-template-columns: repeat(2, 1fr); } }

/* Timeline */
.timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: var(--silver-200);
}
.timeline__step {
  text-align: center;
  padding: 0 0.5rem;
  position: relative;
}
.timeline__num {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  color: #fff;
  background: var(--gradient-brand);
  border-radius: 50%;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow-md);
}
.timeline__step h3 { font-size: 0.9375rem; margin-bottom: 0.375rem; }
.timeline__step p { font-size: 0.8125rem; margin: 0; }

@media (max-width: 991px) {
  .timeline { grid-template-columns: 1fr; gap: 1.5rem; }
  .timeline::before { display: none; }
  .timeline__step { display: flex; gap: 1rem; text-align: left; align-items: flex-start; }
  .timeline__num { margin: 0; flex-shrink: 0; width: 48px; height: 48px; font-size: 1rem; }
}

/* Testimonials */
.quote-card {
  padding: 1.75rem;
  background: var(--surface-0);
  border: 1px solid var(--silver-200);
  border-radius: var(--radius-lg);
  height: 100%;
}
.quote-card p {
  margin: 0 0 1.25rem;
  font-size: 1rem;
  font-style: italic;
  color: var(--navy-800);
  line-height: 1.6;
}
.quote-card p::before { content: "\201C"; font-size: 2rem; color: var(--cyan-400); line-height: 0; vertical-align: -0.4em; margin-right: 0.125rem; }
.quote-card cite { font-style: normal; font-size: 0.875rem; }
.quote-card cite strong { display: block; color: var(--navy-900); }
.quote-card cite span { color: var(--silver-400); }

/* FAQ */
.faq-list { max-width: 720px; margin-inline: auto; }
.faq-item {
  border-bottom: 1px solid var(--silver-200);
}
.faq-item summary {
  padding: 1.25rem 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--navy-900);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--cyan-500);
  flex-shrink: 0;
}
.faq-item[open] summary::after { content: "\2212"; }
.faq-item__body {
  padding: 0 0 1.25rem;
  font-size: 0.9375rem;
  color: var(--silver-500);
}
.faq-item__body a { font-weight: 500; }

/* CTA band */
.cta-band {
  background: var(--gradient-brand);
  color: #fff;
  padding: clamp(3rem, 6vw, 4.5rem) 0;
  text-align: center;
}
.cta-band h2 { color: #fff; margin-bottom: 0.75rem; }
.cta-band p { color: rgba(255,255,255,0.85); max-width: 520px; margin: 0 auto 1.75rem; font-size: 1.0625rem; }
.cta-band__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.75rem; }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: start;
}
.contact-info__item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.contact-info__item svg { flex-shrink: 0; color: var(--cyan-500); }
.contact-info__item strong { display: block; color: var(--navy-900); margin-bottom: 0.25rem; }
.contact-info__item p { margin: 0; font-size: 0.9375rem; }
.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--silver-200);
  color: var(--navy-800);
  transition: background var(--transition), color var(--transition);
}
.social-link:hover { background: var(--cyan-500); color: #fff; border-color: var(--cyan-500); }

.form-card {
  padding: 2rem;
  background: var(--surface-0);
  border: 1px solid var(--silver-200);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

.form-turnstile {
  margin-bottom: 1rem;
  display: flex;
  justify-content: center;
}

.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--navy-900);
  margin-bottom: 0.375rem;
}
.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  border: 1px solid var(--silver-200);
  border-radius: var(--radius-sm);
  background: var(--surface-50);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--cyan-500);
  box-shadow: 0 0 0 3px rgba(0, 150, 214, 0.15);
  background: var(--surface-0);
}
textarea.form-control { resize: vertical; min-height: 120px; }
.form-submit { width: 100%; margin-top: 0.5rem; }

.php-email-form .loading,
.php-email-form .error-message,
.php-email-form .sent-message {
  display: none;
  padding: 0.875rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}
.php-email-form .loading.is-visible,
.php-email-form .error-message.is-visible,
.php-email-form .sent-message.is-visible {
  display: block !important;
}
.php-email-form .loading { background: var(--surface-100); color: var(--navy-800); }
.php-email-form .error-message { background: #fef2f2; color: var(--error); }
.php-email-form .sent-message { background: #ecfdf5; color: var(--success); }

.php-email-form.is-sending .form-submit {
  opacity: 0.65;
  pointer-events: none;
  cursor: wait;
}

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

/* Footer */
.footer {
  background: var(--navy-900);
  color: rgba(255,255,255,0.7);
  padding: 3rem 0 1.5rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer__logo {
  width: 100px;
  height: 100px;
  margin-bottom: 1.25rem;
  object-fit: contain;
}
.footer__brand p { font-size: 0.875rem; color: rgba(255,255,255,0.55); max-width: 280px; }
.footer h4 {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #fff;
  margin-bottom: 1rem;
}
.footer ul li { margin-bottom: 0.5rem; }
.footer a { color: rgba(255,255,255,0.65); font-size: 0.875rem; }
.footer a:hover { color: var(--cyan-400); }
.footer__bottom {
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.45);
}

@media (max-width: 768px) { .footer__grid { grid-template-columns: 1fr; } }

/* Floating actions */
.fab-whatsapp {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  z-index: 900;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #25d366;
  color: #fff;
  border-radius: 50%;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45);
  transition: transform var(--transition);
}
.fab-whatsapp:hover { transform: scale(1.08); color: #fff; }
.fab-whatsapp svg { width: 28px; height: 28px; }

.mobile-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 899;
  padding: 0.75rem 1rem;
  background: var(--surface-0);
  border-top: 1px solid var(--silver-200);
  box-shadow: 0 -4px 20px rgba(0,0,0,0.08);
}
.mobile-cta .btn { width: 100%; }

@media (max-width: 768px) {
  .mobile-cta { display: block; }
  body { padding-bottom: 72px; }
  .fab-whatsapp { bottom: 5rem; }
}

.back-top {
  position: fixed;
  bottom: 1.25rem;
  left: 1.25rem;
  z-index: 898;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-0);
  border: 1px solid var(--silver-200);
  border-radius: 50%;
  color: var(--navy-900);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}
.back-top.is-visible { opacity: 1; visibility: visible; }
.back-top svg { width: 20px; height: 20px; }

@media (max-width: 768px) { .back-top { bottom: 5rem; } }

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .logos__track { animation: none; }
}