/* ============================================================
   style.css — Expertech · WEBAPP Design
   Fuentes: Oswald (headings) + Open Sans (body)
   ============================================================ */

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

:root {
  --primary:      #1a3a5c;
  --primary-dark: #0f2540;
  --accent:       #e8a020;
  --accent-dark:  #c4880e;
  --text:         #2d3a4a;
  --text-light:   #6b7a8d;
  --light:        #f4f7fb;
  --border:       #d8e4f0;
  --white:        #ffffff;
  --shadow:       0 4px 20px rgba(26,58,92,0.10);
  --shadow-hov:   0 10px 36px rgba(26,58,92,0.18);
  --radius:       10px;
  --radius-lg:    16px;
  --font-head:    'Oswald', sans-serif;
  --font-body:    'Open Sans', sans-serif;
  --nav-h:        72px;
  --topbar-h:     40px;
}

html { scroll-behavior: smooth; overflow-x: hidden; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text);
  background: #fff;
  line-height: 1.65;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ── CONTAINER ─────────────────────────────────────────── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── TOPBAR ────────────────────────────────────────────── */
.topbar {
  background: var(--primary-dark);
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  font-size: 13px;
  color: rgba(255,255,255,0.80);
  position: relative;
  z-index: 200;
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.topbar a { color: var(--accent); font-weight: 600; }
.topbar a:hover { text-decoration: underline; }

.topbar-cta {
  background: var(--accent);
  color: #000 !important;
  padding: 5px 16px;
  border-radius: 99px;
  font-weight: 700 !important;
  font-size: 12px;
  white-space: nowrap;
  transition: background 0.2s;
}

.topbar-cta:hover { background: var(--accent-dark) !important; text-decoration: none !important; }

/* ── HEADER ────────────────────────────────────────────── */
#header {
  position: sticky;
  top: 0;
  z-index: 150;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  height: var(--nav-h);
  display: flex;
  align-items: center;
  box-shadow: 0 2px 12px rgba(26,58,92,0.07);
  transition: box-shadow 0.3s;
}

#header.scrolled { box-shadow: 0 4px 24px rgba(26,58,92,0.14); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo img { height: 52px; width: auto; }

#nav-menu ul {
  display: flex;
  align-items: center;
  gap: 32px;
}

#nav-menu a {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.4px;
  transition: color 0.2s;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}

#nav-menu a:hover,
#nav-menu a.active {
  color: var(--primary);
  border-bottom-color: var(--accent);
}

.nav-cta {
  background: var(--primary) !important;
  color: #fff !important;
  border: none !important;
  padding: 9px 22px !important;
  border-radius: 99px !important;
  font-size: 14px !important;
  letter-spacing: 0.3px;
  transition: background 0.2s, transform 0.2s !important;
}

.nav-cta:hover {
  background: var(--primary-dark) !important;
  transform: translateY(-1px);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.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); }

/* ── BUTTONS ───────────────────────────────────────────── */
.btn {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  padding: 13px 30px;
  border-radius: 99px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background 0.22s, color 0.22s, border-color 0.22s, transform 0.22s, box-shadow 0.22s;
  text-align: center;
}

.btn-primary {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(232,160,32,0.30);
}

.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.55);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.12);
  border-color: #fff;
}

.btn-full { width: 100%; }

/* ── HERO ──────────────────────────────────────────────── */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--primary-dark) 0%, #1e4a78 60%, #2a6ab8 100%);
  padding: 90px 0 80px;
  overflow: hidden;
  min-height: 520px;
  display: flex;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 56px 56px;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 80% 50%, rgba(232,160,32,0.08), transparent);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: 720px;
}

.hero-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

.hero h1 {
  font-family: var(--font-head);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.08;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.hero h1 span {
  color: var(--accent);
}

.hero-sub {
  font-size: 17px;
  color: rgba(255,255,255,0.78);
  max-width: 580px;
  margin-bottom: 36px;
  font-weight: 300;
  line-height: 1.7;
}

.hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ── STATS STRIP ───────────────────────────────────────── */
.stats-strip {
  background: var(--primary);
  padding: 28px 0;
}

.stats-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.stat-item {
  flex: 1;
  min-width: 160px;
  text-align: center;
  padding: 12px 20px;
}

.stat-num {
  font-family: var(--font-head);
  font-size: 2.4rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}

.stat-unit {
  font-family: var(--font-head);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--accent);
}

.stat-label {
  display: block;
  font-size: 12px;
  color: rgba(255,255,255,0.60);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 6px;
}

.stat-sep {
  width: 1px;
  height: 48px;
  background: rgba(255,255,255,0.15);
  flex-shrink: 0;
}

/* ── SECTIONS ──────────────────────────────────────────── */
.section { padding: 84px 0; }
.section-alt { background: var(--light); }

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

h2 {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: -0.5px;
  line-height: 1.1;
  margin-bottom: 14px;
}

.section-sub {
  font-size: 16px;
  color: var(--text-light);
  max-width: 540px;
  margin: 0 auto;
  font-weight: 300;
  line-height: 1.75;
}

.divider {
  width: 56px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
  margin: 18px auto 0;
}

/* ── INTRO ─────────────────────────────────────────────── */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.intro-text h2 {
  text-align: left;
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  margin-bottom: 18px;
}

.intro-text .section-label { display: block; }

.intro-text p {
  color: var(--text-light);
  font-size: 15px;
  font-weight: 300;
  line-height: 1.8;
  margin-top: 14px;
}

.intro-text strong { color: var(--primary); font-weight: 700; }

.intro-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.intro-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 16px;
  box-shadow: var(--shadow);
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

.intro-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hov);
  border-color: var(--primary);
}

.intro-icon {
  font-size: 22px;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.intro-card strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.intro-card span {
  font-size: 12px;
  color: var(--text-light);
  line-height: 1.55;
}

/* ── SERVICES ──────────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.service-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  position: relative;
  box-shadow: var(--shadow);
  transition: transform 0.28s, box-shadow 0.28s, border-color 0.28s;
  overflow: hidden;
}

.service-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.28s;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hov);
  border-color: var(--primary);
}

.service-card:hover::after { opacity: 1; }

.service-num {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.12em;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.service-icon-wrap {
  font-size: 28px;
  margin-bottom: 14px;
  line-height: 1;
}

.service-card h3 {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  font-weight: 300;
}

.service-card--cta {
  background: linear-gradient(135deg, var(--primary-dark), #1e4a78);
  border-color: transparent;
}

.service-card--cta .service-icon-wrap,
.service-card--cta h3,
.service-card--cta p { color: rgba(255,255,255,0.9); }

.service-card--cta h3 { color: var(--accent); }

/* ── WHY ───────────────────────────────────────────────── */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.why-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: transform 0.25s, box-shadow 0.25s;
  text-align: center;
}

.why-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hov);
}

.why-icon {
  font-size: 32px;
  margin-bottom: 14px;
  line-height: 1;
}

.why-card h4 {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-bottom: 10px;
}

.why-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
  font-weight: 300;
}

/* ── STEPS ─────────────────────────────────────────────── */
.steps-row {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 160px;
  max-width: 220px;
  text-align: center;
  padding: 24px 16px;
}

.step-num {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 4px 14px rgba(26,58,92,0.22);
}

.step h4 {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.step p {
  font-size: 13px;
  color: var(--text-light);
  font-weight: 300;
  line-height: 1.65;
}

.step-arrow {
  font-size: 24px;
  color: var(--accent);
  align-self: center;
  padding: 0 8px;
  flex-shrink: 0;
}

/* ── TESTIMONIALS ──────────────────────────────────────── */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.testimonial-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 0.25s, box-shadow 0.25s;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hov);
}

.t-stars {
  color: #f59e0b;
  font-size: 15px;
  letter-spacing: 2px;
}

.testimonial-card blockquote {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.75;
  font-weight: 300;
  font-style: italic;
  flex: 1;
}

.testimonial-card blockquote::before {
  content: '\201C';
  font-size: 36px;
  color: var(--accent);
  font-family: var(--font-head);
  line-height: 0;
  vertical-align: -14px;
  margin-right: 4px;
  font-style: normal;
}

.t-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.t-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.t-author strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
}

.t-author span {
  font-size: 12px;
  color: var(--text-light);
}

/* ── CONTACT ───────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 56px;
  align-items: start;
}

.contact-block {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}

.contact-ico {
  font-size: 22px;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-block strong {
  display: block;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.contact-block a,
.contact-block span {
  font-size: 14px;
  color: var(--text-light);
  font-weight: 300;
  line-height: 1.6;
}

.contact-block a:hover { color: var(--primary); }

.contact-promise {
  background: var(--light);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  margin-top: 8px;
}

.contact-promise strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.contact-promise p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.65;
  font-weight: 300;
}

.contact-promise a { color: var(--primary); font-weight: 600; }

/* Form */
.contact-form-wrap {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow);
}

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

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  font-family: var(--font-head);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 8px;
}

.req { color: #e03; }
.opt { color: var(--text-light); font-weight: 400; text-transform: none; font-family: var(--font-body); }

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 11px 14px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s, background 0.2s;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: #aab5c4; }

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(26,58,92,0.08);
}

.form-group textarea { resize: vertical; min-height: 110px; }

.form-msg {
  font-size: 14px;
  border-radius: var(--radius);
  padding: 0;
  margin-bottom: 0;
  min-height: 0;
  transition: all 0.3s;
}

.form-msg.success {
  background: #e8f5e9;
  color: #2e7d32;
  border: 1px solid #a5d6a7;
  padding: 12px 16px;
  margin-bottom: 14px;
}

.form-msg.error {
  background: #fdecea;
  color: #c62828;
  border: 1px solid #ef9a9a;
  padding: 12px 16px;
  margin-bottom: 14px;
}

/* ── CTA BANNER ────────────────────────────────────────── */
.cta-banner {
  background: linear-gradient(135deg, var(--primary-dark) 0%, #1e4a78 60%, var(--primary) 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 56px 56px;
}

.cta-inner {
  position: relative;
  text-align: center;
}

.cta-inner h2 {
  color: #fff;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 16px;
}

.cta-inner p {
  color: rgba(255,255,255,0.72);
  font-size: 16px;
  max-width: 520px;
  margin: 0 auto 36px;
  font-weight: 300;
  line-height: 1.7;
}

.cta-feats {
  display: flex;
  gap: 32px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 36px;
}

.cta-feats span {
  font-size: 14px;
  color: rgba(255,255,255,0.72);
  font-weight: 300;
}

/* ── FOOTER ────────────────────────────────────────────── */
footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.75);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand img { margin-bottom: 16px; }

.footer-brand p {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  line-height: 1.75;
  font-weight: 300;
  margin-bottom: 18px;
}

.footer-legal-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-legal-links a {
  font-size: 12px;
  color: rgba(255,255,255,0.45);
  transition: color 0.2s;
}

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

.footer-col h4 {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 16px;
}

.footer-col ul { display: flex; flex-direction: column; gap: 9px; }

.footer-col a {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  transition: color 0.2s;
  font-weight: 300;
}

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

.footer-contact-col p {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  margin-bottom: 8px;
  font-weight: 300;
}

.footer-contact-col a { color: rgba(255,255,255,0.72); }
.footer-contact-col a:hover { color: var(--accent); }

.footer-bottom {
  background: rgba(0,0,0,0.25);
  padding: 18px 0;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom p {
  font-size: 12px;
  color: rgba(255,255,255,0.40);
  font-weight: 300;
}

/* ── FLOAT BUTTONS ─────────────────────────────────────── */
.float-buttons {
  position: fixed;
  bottom: 28px;
  right: 22px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  z-index: 9999;
}

.btn-whatsapp {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  box-shadow: 0 4px 16px rgba(37,211,102,0.40);
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-whatsapp:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 22px rgba(37,211,102,0.60);
}

.btn-whatsapp svg { width: 28px; height: 28px; fill: #fff; }

.btn-scroll-top {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, background 0.2s, transform 0.2s;
}

.btn-scroll-top.visible {
  opacity: 1;
  pointer-events: all;
}

.btn-scroll-top:hover {
  background: rgba(232,160,32,0.12);
  transform: translateY(-3px);
}

.btn-scroll-top svg { width: 22px; height: 22px; }

/* ── FADE-IN ANIMATION ─────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* ── RESPONSIVE ────────────────────────────────────────── */
@media (max-width: 1024px) {
  .services-grid,
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .intro-grid,
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .step-arrow { display: none; }
  .steps-row { gap: 16px; }
  .topbar .topbar-cta { display: none; }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }

  #nav-menu {
    display: none;
    position: fixed;
    top: calc(var(--topbar-h) + var(--nav-h));
    left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 20px 24px 28px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  }

  #nav-menu.open { display: block; }

  #nav-menu ul {
    flex-direction: column;
    gap: 0;
  }

  #nav-menu a {
    display: block;
    padding: 13px 0;
    border-bottom: 1px solid var(--border);
    font-size: 16px;
  }

  #nav-menu li:last-child a { border-bottom: none; }

  .services-grid,
  .why-grid { grid-template-columns: 1fr; }

  .form-row { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }

  .hero { padding: 60px 0 56px; }
  .section { padding: 60px 0; }

  .cta-feats { flex-direction: column; gap: 10px; align-items: center; }
}

@media (max-width: 480px) {
  .float-buttons { bottom: 18px; right: 14px; }
  .btn-whatsapp { width: 50px; height: 50px; }
  .btn-scroll-top { width: 42px; height: 42px; }
  .intro-cards { grid-template-columns: 1fr; }
  .stat-sep { display: none; }
  .stats-grid { gap: 0; }
}

/* ── REDUCED MOTION ────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .fade-in { transition: none; }
  html { scroll-behavior: auto; }
}