/* ============================================================
   INFORMATICA MARTINI — STYLES
   Mobile-first, CSS custom properties, no framework deps
   ============================================================ */

/* ---- RESET & BASE ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  transition: background .3s, color .3s;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; content-visibility: auto; }
img[loading="lazy"] { opacity: 0; transition: opacity .4s ease; }
img[loading="lazy"].loaded { opacity: 1; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ---- CSS VARIABLES — LIGHT ---- */
:root {
  --primary:       #2563eb;
  --primary-dark:  #1d4ed8;
  --primary-light: #eff6ff;
  --accent:        #06b6d4;
  --success:       #10b981;
  --warning:       #f59e0b;
  --danger:        #ef4444;

  --bg:            #ffffff;
  --bg-alt:        #f8fafc;
  --bg-card:       #ffffff;
  --border:        #e2e8f0;

  --text:          #0f172a;
  --text-muted:    #64748b;
  --text-light:    #94a3b8;

  --nav-bg:        rgba(255,255,255,0.92);
  --nav-shadow:    0 1px 20px rgba(0,0,0,0.08);

  --radius:        12px;
  --radius-lg:     20px;
  --shadow:        0 4px 24px rgba(37,99,235,0.08);
  --shadow-lg:     0 8px 48px rgba(37,99,235,0.14);
  --transition:    .25s ease;
}

/* ---- CSS VARIABLES — DARK ---- */
[data-theme="dark"] {
  --primary:       #3b82f6;
  --primary-dark:  #2563eb;
  --primary-light: #1e3a5f;
  --accent:        #22d3ee;

  --bg:            #0b1120;
  --bg-alt:        #111827;
  --bg-card:       #1e293b;
  --border:        #334155;

  --text:          #f1f5f9;
  --text-muted:    #94a3b8;
  --text-light:    #64748b;

  --nav-bg:        rgba(11,17,32,0.95);
  --nav-shadow:    0 1px 20px rgba(0,0,0,0.5);
}

/* ---- UTILITIES ---- */
.container { max-width: 1180px; margin: 0 auto; padding: 0 1.25rem; }
.section    { padding: 5rem 0; }
.section-alt { background: var(--bg-alt); }

.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-light);
  padding: .3rem .9rem;
  border-radius: 50px;
  margin-bottom: 1rem;
}
.section-header h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.25;
}
.section-header p {
  margin-top: .75rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-inline: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,.3); }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-ghost {
  background: rgba(255,255,255,.15);
  color: #fff;
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255,255,255,.25); }

/* Fade-in on scroll */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---- NAVBAR ---- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
  padding: 1.25rem 0;
}
.navbar.scrolled {
  background: var(--nav-bg);
  box-shadow: var(--nav-shadow);
  padding: .75rem 0;
  backdrop-filter: blur(12px);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  transition: color var(--transition);
}
.navbar.scrolled .nav-logo { color: var(--text); }
.nav-logo span { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: rgba(255,255,255,.85);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--primary);
  transition: width var(--transition);
}
.nav-links a:hover::after { width: 100%; }
.navbar.scrolled .nav-links a { color: var(--text-muted); }
.navbar.scrolled .nav-links a:hover { color: var(--primary); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: .75rem;
}

/* Theme toggle */
.theme-toggle {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,.15);
  color: #fff;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  font-size: 1rem;
}
.navbar.scrolled .theme-toggle { background: var(--bg-alt); color: var(--text); }
.theme-toggle:hover { background: var(--primary); color: #fff; }

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.nav-hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--transition);
}
.navbar.scrolled .nav-hamburger span { background: var(--text); }
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  transition: color var(--transition);
}
.nav-mobile a:hover { color: var(--primary); }

/* ---- HERO ---- */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0b1120 100%);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 6rem 0 4rem;
}
.hero::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,.25) 0%, transparent 70%);
  top: -150px; right: -150px;
  animation: pulse 8s ease-in-out infinite;
}
.hero::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6,182,212,.15) 0%, transparent 70%);
  bottom: -100px; left: -100px;
  animation: pulse 6s ease-in-out infinite reverse;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: .7; }
  50% { transform: scale(1.1); opacity: 1; }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: rgba(37,99,235,.2);
  border: 1px solid rgba(37,99,235,.4);
  color: #93c5fd;
  padding: .4rem 1rem;
  border-radius: 50px;
  font-size: .82rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
}
.hero-badge .dot {
  width: 7px; height: 7px;
  background: #22d3ee;
  border-radius: 50%;
  animation: blink 1.5s ease-in-out infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.3} }

.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}
.hero h1 span { color: #60a5fa; }
.hero p {
  font-size: 1.1rem;
  color: #94a3b8;
  margin-bottom: 2.5rem;
  max-width: 540px;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 4rem;
  flex-wrap: wrap;
}
.hero-stat { text-align: left; }
.hero-stat strong {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
}
.hero-stat span { font-size: .85rem; color: #64748b; }

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  color: rgba(255,255,255,.4);
  font-size: .75rem;
  animation: float 2s ease-in-out infinite;
  z-index: 1;
}
@keyframes float { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(-8px)} }
.scroll-indicator i { font-size: 1rem; }

/* ---- SOBRE MÍ ---- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about-image {
  position: relative;
}
.about-avatar {
  width: 100%;
  max-width: 400px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--primary-light), var(--bg-alt));
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 6rem;
  font-weight: 800;
  color: var(--primary);
  border: 3px solid var(--border);
  overflow: hidden;
}
.about-avatar img { width: 100%; height: 100%; object-fit: cover; object-position: center top; transition: transform .4s ease; }
.about-avatar:hover img { transform: scale(1.04); }
.about-badge {
  position: absolute;
  bottom: -1rem; right: -1rem;
  background: var(--primary);
  color: #fff;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  font-size: .82rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  text-align: center;
}
.about-badge strong { display: block; font-size: 1.5rem; font-family: 'Space Grotesk', sans-serif; }

.about-content h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 1rem;
}
.about-content p { color: var(--text-muted); margin-bottom: 1rem; }

.about-skills {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 1.5rem 0;
}
.skill-tag {
  background: var(--primary-light);
  color: var(--primary);
  padding: .35rem .9rem;
  border-radius: 50px;
  font-size: .82rem;
  font-weight: 600;
}

/* ---- SERVICIOS ---- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  opacity: 0;
  transition: opacity var(--transition);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-card:hover::before { opacity: .04; }
.service-card:hover .service-icon { background: var(--primary); color: #fff; }

.service-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius);
  background: var(--primary-light);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
  transition: all var(--transition);
}
.service-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: .5rem;
}
.service-card p { color: var(--text-muted); font-size: .9rem; }

/* ---- PORTAFOLIO ---- */
.portfolio-filter {
  display: flex;
  justify-content: center;
  gap: .75rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.filter-btn {
  padding: .45rem 1.2rem;
  border-radius: 50px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: .85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.portfolio-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}
.portfolio-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.portfolio-thumb {
  height: 200px;
  background: linear-gradient(135deg, var(--primary-light), var(--bg-alt));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}
.portfolio-thumb img { width: 100%; height: 100%; object-fit: cover; }
.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: rgba(37,99,235,.85);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  opacity: 0;
  transition: opacity var(--transition);
}
.portfolio-card:hover .portfolio-overlay { opacity: 1; }
.portfolio-overlay a {
  width: 44px; height: 44px;
  background: #fff;
  color: var(--primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
}
.portfolio-overlay a:hover { background: var(--primary); color: #fff; }

.portfolio-info { padding: 1.25rem; }
.portfolio-info h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  margin-bottom: .25rem;
}
.portfolio-info p { color: var(--text-muted); font-size: .88rem; margin-bottom: .75rem; }
.portfolio-tags { display: flex; gap: .4rem; flex-wrap: wrap; }
.portfolio-tags span {
  font-size: .75rem;
  font-weight: 600;
  background: var(--primary-light);
  color: var(--primary);
  padding: .2rem .65rem;
  border-radius: 50px;
}

/* ---- POR QUÉ ---- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.why-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  transition: all var(--transition);
}
.why-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.why-icon {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 1.5rem;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.25rem;
}
.why-card h3 { font-family: 'Space Grotesk', sans-serif; font-weight: 700; margin-bottom: .5rem; }
.why-card p { color: var(--text-muted); font-size: .9rem; }

/* ---- SISTEMAS ---- */
.systems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}
.system-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}
.system-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.system-header {
  padding: 2rem 2rem 1rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
}
.system-header .sys-icon {
  font-size: 2.5rem;
  margin-bottom: .75rem;
}
.system-header h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
}
.system-header p { font-size: .9rem; opacity: .85; margin-top: .25rem; }

.system-features {
  padding: 1.5rem 2rem 2rem;
}
.system-features li {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: .6rem 0;
  border-bottom: 1px solid var(--border);
  font-size: .9rem;
  color: var(--text-muted);
}
.system-features li:last-child { border-bottom: none; }
.system-features li i { color: var(--success); margin-top: .2rem; flex-shrink: 0; }
.system-cta { padding: 0 2rem 2rem; }

/* ---- TESTIMONIOS ---- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  transition: all var(--transition);
}
.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 1rem; right: 1.5rem;
  font-size: 5rem;
  font-family: Georgia, serif;
  color: var(--primary-light);
  line-height: 1;
  [data-theme="dark"] & { color: rgba(37,99,235,.2); }
}
.testimonial-text { color: var(--text-muted); font-size: .95rem; margin-bottom: 1.5rem; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: .75rem; }
.testimonial-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: .9rem;
  flex-shrink: 0;
}
.testimonial-meta strong { display: block; font-weight: 600; font-size: .9rem; }
.testimonial-meta span { font-size: .8rem; color: var(--text-muted); }
.testimonial-stars { color: var(--warning); font-size: .85rem; margin-bottom: .75rem; }

/* ---- CONTACTO ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  align-items: start;
}
.contact-info h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.contact-info p { color: var(--text-muted); margin-bottom: 2rem; }

.contact-items { display: flex; flex-direction: column; gap: 1rem; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.contact-item-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius);
  background: var(--primary-light);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.contact-item-text span { display: block; font-size: .78rem; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: .05em; }
.contact-item-text strong { font-size: .95rem; }

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1rem; }
.form-group label { font-size: .85rem; font-weight: 600; color: var(--text); }
.form-group input,
.form-group textarea,
.form-group select {
  padding: .75rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: .95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.form-group textarea { min-height: 140px; resize: vertical; }

.form-submit { width: 100%; justify-content: center; padding: 1rem; font-size: 1rem; }

.form-alert {
  padding: .9rem 1.25rem;
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 500;
  display: none;
  margin-top: 1rem;
}
.form-alert.success { background: #d1fae5; color: #065f46; display: block; }
.form-alert.error   { background: #fee2e2; color: #991b1b; display: block; }
[data-theme="dark"] .form-alert.success { background: rgba(16,185,129,.15); color: #6ee7b7; }
[data-theme="dark"] .form-alert.error   { background: rgba(239,68,68,.15); color: #fca5a5; }

/* ---- FOOTER ---- */
.footer {
  background: #0b1120;
  color: #94a3b8;
  padding: 4rem 0 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
  margin-bottom: 2rem;
}
.footer-logo {
  display: inline-flex;
  width: 48px; height: 48px;
  background: var(--primary);
  color: #fff;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  font-size: 1.1rem;
  border-radius: var(--radius);
  align-items: center; justify-content: center;
  margin-bottom: 1rem;
}
.footer-brand p { font-size: .9rem; line-height: 1.7; max-width: 280px; margin-bottom: 1.25rem; }
.footer-social { display: flex; gap: .75rem; }
.footer-social a {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  color: #94a3b8;
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem;
  transition: all var(--transition);
}
.footer-social a:hover { background: var(--primary); color: #fff; }

.footer-links h4, .footer-contact h4 {
  color: #fff;
  font-weight: 700;
  margin-bottom: 1.25rem;
  font-size: .95rem;
}
.footer-links ul { display: flex; flex-direction: column; gap: .6rem; }
.footer-links a { font-size: .9rem; transition: color var(--transition); }
.footer-links a:hover { color: var(--primary); }
.footer-contact ul { display: flex; flex-direction: column; gap: .75rem; }
.footer-contact li { display: flex; align-items: center; gap: .75rem; font-size: .9rem; }
.footer-contact i { color: var(--primary); width: 16px; text-align: center; }
.footer-bottom { text-align: center; font-size: .82rem; }

/* ---- WHATSAPP FLOAT ---- */
.whatsapp-float {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 56px; height: 56px;
  background: #25d366;
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 4px 20px rgba(37,211,102,.4);
  z-index: 900;
  transition: all var(--transition);
  animation: waBounce 3s ease-in-out infinite;
}
.whatsapp-float:hover { transform: scale(1.1); box-shadow: 0 6px 28px rgba(37,211,102,.6); }
@keyframes waBounce {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-image { display: flex; justify-content: center; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 3.5rem 0; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .hero-stats { gap: 1.5rem; }
  .systems-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .contact-form { padding: 1.5rem; }
}