/* =============================================
   DEV4LAB — Brand Design System
   Primary: #1D1A3B | Orange: #F5A135
   Light Gray: #F2F2F2 | White: #FFFFFF
   ============================================= */

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

:root {
  --dark: #1D1A3B;
  --dark-80: rgba(29, 26, 59, 0.8);
  --dark-soft: #2A2650;
  --orange: #F5A135;
  --orange-dark: #e08d1f;
  --orange-light: rgba(245, 161, 53, 0.12);
  --gray: #F2F2F2;
  --gray-mid: #e0e0e0;
  --gray-text: #5c6473; /* darkened: passes 4.5:1 on both white and #F2F2F2 backgrounds */
  --white: #FFFFFF;
  --shadow-sm: 0 2px 8px rgba(29,26,59,0.07);
  --shadow-md: 0 8px 32px rgba(29,26,59,0.10);
  --shadow-lg: 0 20px 60px rgba(29,26,59,0.14);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: 0.22s ease;
  --font: 'Inter', 'Segoe UI', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--dark);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font); }

/* ---------- SKIP LINK (a11y) ---------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 9999;
  background: var(--dark);
  color: var(--white);
  padding: 10px 20px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  transition: top 0.2s;
}
.skip-link:focus { top: 0; }

/* ---------- FOCUS VISIBLE (a11y) ---------- */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
  border-radius: 4px;
}
.form-control:focus-visible {
  outline: none; /* custom focus handled by border + box-shadow */
}
.btn:focus-visible, .service-link:focus-visible, .social-link:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

/* ---------- TOUCH (interaction) ---------- */
a, button, .btn, .service-link, .form-submit, .hamburger { touch-action: manipulation; }
.btn, .service-link, .contact-method, .social-link { cursor: pointer; }

/* ---------- TYPOGRAPHY ---------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 16px;
}
.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--orange);
  border-radius: 2px;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.12; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); font-weight: 800; line-height: 1.2; letter-spacing: -0.02em; }
h3 { font-size: 1.15rem; font-weight: 700; line-height: 1.3; }

.section-title { text-align: center; margin-bottom: 16px; }
.section-subtitle {
  text-align: center;
  color: var(--gray-text);
  font-size: 1.05rem;
  max-width: 540px;
  margin: 0 auto 60px;
  line-height: 1.7;
}

/* ---------- LAYOUT ---------- */
.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 24px; }
section { padding: 96px 0; }

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--orange);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(245,161,53,0.32);
}
.btn-primary:hover {
  background: var(--orange-dark);
  box-shadow: 0 6px 24px rgba(245,161,53,0.44);
  transform: translateY(-1px);
}
.btn-secondary {
  background: transparent;
  color: var(--dark);
  border: 1.5px solid var(--gray-mid);
}
.btn-secondary:hover {
  border-color: var(--dark);
  background: var(--gray);
  transform: translateY(-1px);
}
.btn-ghost {
  background: rgba(255,255,255,0.12);
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.25);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.22);
  border-color: rgba(255,255,255,0.4);
}
.btn-whatsapp {
  background: #25D366;
  color: var(--white);
  box-shadow: 0 4px 16px rgba(37,211,102,0.28);
}
.btn-whatsapp:hover {
  background: #1ebe5d;
  box-shadow: 0 6px 24px rgba(37,211,102,0.4);
  transform: translateY(-1px);
}
.btn-whatsapp-lg {
  background: #25D366;
  color: var(--white);
  box-shadow: 0 6px 24px rgba(37,211,102,0.36);
  padding: 18px 40px;
  font-size: 17px;
  border-radius: var(--radius-md);
}
.btn-whatsapp-lg:hover {
  background: #1ebe5d;
  box-shadow: 0 8px 32px rgba(37,211,102,0.48);
  transform: translateY(-2px);
}

/* ---------- LANGUAGE SWITCHER ---------- */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--gray);
  border-radius: 8px;
  padding: 3px;
}
.lang-btn {
  padding: 4px 9px;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-text);
  border-radius: 6px;
  letter-spacing: 0.04em;
  transition: all var(--transition);
  line-height: 1;
}
.lang-btn:hover { color: var(--dark); background: var(--gray-mid); }
.lang-btn.active { background: var(--white); color: var(--dark); box-shadow: var(--shadow-sm); }

@media (max-width: 768px) {
  .lang-switcher { display: none; }
}

.mobile-lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--gray);
  border-radius: 8px;
  padding: 3px;
  margin-bottom: 8px;
  align-self: flex-start;
}
.mobile-lang-switcher .lang-btn {
  color: var(--gray-text);
  padding: 6px 14px;
  font-size: 13px;
}
.mobile-lang-switcher .lang-btn:hover { background: var(--gray-mid); color: var(--dark); }
.mobile-lang-switcher .lang-btn.active { background: var(--orange); color: var(--white); box-shadow: none; }

/* ---------- HEADER ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(29,26,59,0.07);
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-md); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--dark);
  letter-spacing: -0.02em;
}
.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--dark);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-icon svg { width: 20px; height: 20px; }
.logo-text span { color: var(--orange); }
.logo-img { height: 40px; width: auto; display: block; }

.nav { display: flex; align-items: center; gap: 8px; }
.nav a {
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-text);
  border-radius: 6px;
  transition: all var(--transition);
}
.nav a:hover { color: var(--dark); background: var(--gray); }
.nav a.active { color: var(--dark); font-weight: 600; }

.header-cta { display: flex; align-items: center; gap: 12px; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 8px;
  transition: background var(--transition);
}
.hamburger:hover { background: var(--gray); }
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--gray-mid);
  padding: 16px 24px 24px;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--dark);
  border-radius: 8px;
  transition: background var(--transition);
}
.mobile-menu a:hover { background: var(--gray); }
.mobile-menu .btn { margin-top: 8px; justify-content: center; width: 100%; }

/* ---------- HERO ---------- */
.hero {
  padding-top: 160px;
  padding-bottom: 100px;
  background: var(--white);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(245,161,53,0.07) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(29,26,59,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--orange-light);
  color: var(--orange-dark);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid rgba(245,161,53,0.2);
}
.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--orange);
  border-radius: 50%;
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

.hero h1 { margin-bottom: 20px; color: var(--dark); }
.hero h1 em { font-style: normal; color: var(--orange); }

.hero-desc {
  font-size: 1.05rem;
  color: var(--gray-text);
  max-width: 480px;
  margin-bottom: 36px;
  line-height: 1.75;
}

.hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }

.hero-trust {
  margin-top: 48px;
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 32px;
  border-top: 1px solid var(--gray-mid);
  flex-wrap: wrap;
}
.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-text);
}
.hero-trust-item svg { color: var(--orange); flex-shrink: 0; }

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.hero-visual-inner {
  position: relative;
  width: 100%;
  max-width: 500px;
}

/* ---------- CREDIBILITY STRIP ---------- */
.credibility {
  padding: 56px 0;
  background: var(--gray);
  border-top: 1px solid var(--gray-mid);
  border-bottom: 1px solid var(--gray-mid);
}
.credibility-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.cred-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.cred-icon {
  width: 44px;
  height: 44px;
  background: var(--orange-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.cred-icon svg { color: var(--orange); }
.cred-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--dark);
  line-height: 1;
  margin-bottom: 4px;
  letter-spacing: -0.03em;
}
.cred-label { font-size: 13px; color: var(--gray-text); font-weight: 500; line-height: 1.4; }

/* ---------- SERVICES CAROUSEL ---------- */
.services { background: var(--white); }

.services-carousel {
  position: relative;
  padding: 0 48px;
}

.services-track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 8px;
}
.services-track::-webkit-scrollbar { display: none; }

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(calc(-50% - 20px));
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--white);
  border: 1.5px solid var(--gray-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dark);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  z-index: 2;
}
.carousel-btn:hover { border-color: var(--orange); color: var(--orange); box-shadow: var(--shadow-md); }
.carousel-btn:disabled { opacity: 0.25; cursor: default; pointer-events: none; }
.carousel-prev { left: 0; }
.carousel-next { right: 0; }

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 28px;
}
.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gray-mid);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: all var(--transition);
}
.carousel-dot.active {
  background: var(--orange);
  width: 24px;
  border-radius: 4px;
}

.service-card {
  flex: 0 0 calc(33.333% - 16px);
  scroll-snap-align: start;
  background: var(--white);
  border: 1.5px solid var(--gray-mid);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  transition: all var(--transition);
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), #f7b84b);
  opacity: 0;
  transition: opacity var(--transition);
}
.service-card:hover {
  border-color: var(--orange);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.service-card:hover::before { opacity: 1; }

.service-icon {
  width: 56px;
  height: 56px;
  background: var(--orange-light);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: all var(--transition);
}
.service-card:hover .service-icon {
  background: var(--orange);
}
.service-icon svg { color: var(--orange); transition: color var(--transition); }
.service-card:hover .service-icon svg { color: var(--white); }

.service-card h3 { margin-bottom: 12px; color: var(--dark); }
.service-card p { font-size: 14px; color: var(--gray-text); line-height: 1.7; margin-bottom: 20px; }

.service-features { margin-bottom: 28px; }
.service-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--gray-text);
  padding: 5px 0;
}
.service-features li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--orange);
  border-radius: 50%;
  flex-shrink: 0;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--orange);
  transition: gap var(--transition);
}
.service-link:hover { gap: 10px; }

/* ---------- DIFFERENTIALS ---------- */
.differentials { background: var(--dark); color: var(--white); }
.differentials .section-title { color: var(--white); }
.differentials .section-subtitle { color: rgba(255,255,255,0.55); }
.differentials .section-label { color: var(--orange); }

.diff-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}
.diff-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  text-align: center;
  transition: all var(--transition);
}
.diff-item:hover {
  background: rgba(245,161,53,0.08);
  border-color: rgba(245,161,53,0.3);
  transform: translateY(-3px);
}
.diff-icon-wrap {
  width: 56px;
  height: 56px;
  background: rgba(245,161,53,0.12);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  transition: background var(--transition);
}
.diff-item:hover .diff-icon-wrap { background: rgba(245,161,53,0.2); }
.diff-icon-wrap svg { color: var(--orange); }
.diff-item h3 { font-size: 15px; color: var(--white); margin-bottom: 8px; }
.diff-item p { font-size: 13px; color: rgba(255,255,255,0.5); line-height: 1.6; }

/* ---------- ABOUT ---------- */
.about { background: var(--white); }
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-visual {
  position: relative;
  display: flex;
  justify-content: center;
}
.about-content .section-label { margin-bottom: 12px; }
.about-content h2 { margin-bottom: 20px; }
.about-content p {
  font-size: 1rem;
  color: var(--gray-text);
  line-height: 1.8;
  margin-bottom: 16px;
}
.about-highlight {
  background: var(--orange-light);
  border-left: 3px solid var(--orange);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
  margin-top: 24px;
  font-size: 15px;
  font-weight: 500;
  color: var(--dark);
  font-style: italic;
  line-height: 1.7;
}

/* ---------- CTA SECTION ---------- */
.cta-section {
  background: var(--dark);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(245,161,53,0.1) 0%, transparent 65%);
  pointer-events: none;
}
.cta-section .section-label { justify-content: center; }
.cta-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.cta-title em { font-style: normal; color: var(--orange); }
.cta-desc {
  color: rgba(255,255,255,0.6);
  font-size: 1.05rem;
  max-width: 480px;
  margin: 0 auto 40px;
  line-height: 1.75;
}
.cta-actions { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ---------- CONTACT ---------- */
.contact { background: var(--gray); }
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
  align-items: start;
}
.contact-info h2 { margin-bottom: 16px; }
.contact-info p { color: var(--gray-text); margin-bottom: 36px; line-height: 1.75; }

.contact-methods { display: flex; flex-direction: column; gap: 16px; }
.contact-method {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.contact-method:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.contact-method-icon {
  width: 44px;
  height: 44px;
  background: var(--orange-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-method-icon svg { color: var(--orange); }
.contact-method-label { font-size: 12px; color: var(--gray-text); font-weight: 500; margin-bottom: 2px; }
.contact-method-value { font-size: 14px; font-weight: 600; color: var(--dark); }

.contact-form {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 44px 40px;
  box-shadow: var(--shadow-md);
}
.form-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 28px; }

.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 7px;
}
.form-group label span { color: var(--orange); }

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 14px;
  font-family: var(--font);
  color: var(--dark);
  background: var(--white);
  border: 1.5px solid var(--gray-mid);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-control:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(245,161,53,0.12);
}
.form-control::placeholder { color: #aaa; }
textarea.form-control { resize: vertical; min-height: 110px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.form-submit {
  width: 100%;
  padding: 14px;
  background: var(--orange);
  color: var(--white);
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(245,161,53,0.3);
}
.form-submit:hover {
  background: var(--orange-dark);
  box-shadow: 0 6px 24px rgba(245,161,53,0.42);
  transform: translateY(-1px);
}
.form-submit:disabled { opacity: 0.7; cursor: not-allowed; transform: none; }

.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}
.form-success-icon {
  width: 64px;
  height: 64px;
  background: rgba(37,211,102,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.form-success-icon svg { color: #25D366; }
.form-success h3 { margin-bottom: 8px; }
.form-success p { color: var(--gray-text); font-size: 14px; }

/* ---------- FOOTER ---------- */
.footer {
  background: var(--dark);
  color: var(--white);
  padding: 64px 0 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 32px;
}
.footer-brand p {
  color: rgba(255,255,255,0.5);
  font-size: 14px;
  line-height: 1.7;
  margin-top: 16px;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--orange); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-copy { font-size: 13px; color: rgba(255,255,255,0.35); }
.footer-socials { display: flex; gap: 10px; }
.social-link {
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.06);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.social-link:hover { background: rgba(245,161,53,0.15); color: var(--orange); }
.social-link svg { color: rgba(255,255,255,0.5); transition: color var(--transition); }
.social-link:hover svg { color: var(--orange); }

/* ---------- WHATSAPP FLOAT ---------- */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 900;
  display: flex;
  align-items: center;
  gap: 12px;
}
.whatsapp-float-btn {
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 24px rgba(37,211,102,0.44);
  transition: all var(--transition);
  position: relative;
}
.whatsapp-float-btn::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: rgba(37,211,102,0.2);
  animation: ping 2s ease infinite;
}
@keyframes ping {
  0% { transform: scale(1); opacity: 0.8; }
  70% { transform: scale(1.4); opacity: 0; }
  100% { transform: scale(1.4); opacity: 0; }
}
.whatsapp-float-btn:hover { background: #1ebe5d; transform: scale(1.08); }
.whatsapp-float-btn svg { color: var(--white); }

/* ---------- SCROLL ANIMATIONS ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-up.delay-1 { transition-delay: 0.08s; }
.fade-up.delay-2 { transition-delay: 0.16s; }
.fade-up.delay-3 { transition-delay: 0.24s; }
.fade-up.delay-4 { transition-delay: 0.32s; }
.fade-up.delay-5 { transition-delay: 0.40s; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .diff-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-trust { justify-content: center; }
  .hero-visual { order: -1; max-width: 380px; margin: 0 auto; }
  .credibility-grid { grid-template-columns: repeat(2, 1fr); }
  .services-carousel { padding: 0 36px; }
  .service-card { flex: 0 0 calc(50% - 12px); }
  .about-inner { grid-template-columns: 1fr; }
  .about-visual { display: none; }
  .contact-inner { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  section { padding: 72px 0; }
  .nav, .header-cta .btn-whatsapp { display: none; }
  .hamburger { display: flex; }
  .diff-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-form { padding: 32px 24px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 480px) {
  .services-carousel { padding: 0 28px; }
  .service-card { flex: 0 0 calc(85% - 12px); }
  .credibility-grid { grid-template-columns: 1fr; }
  .diff-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 120px; padding-bottom: 72px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; justify-content: center; max-width: 320px; }
}

/* ---------- REDUCED MOTION (a11y) ---------- */
@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;
  }
  .fade-up {
    opacity: 1;
    transform: none;
  }
  .hero-badge-dot { animation: none; }
  .whatsapp-float-btn::before { animation: none; }
}