/* ========================
   VARIABLES & RESET
======================== */
:root {
  --primary: #0B2D66;
  --primary-light: #1a4a99;
  --accent: #0099FF;
  --accent-light: #33b3ff;
  --accent-glow: rgba(0, 153, 255, 0.25);
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-700: #334155;
  --gray-900: #0f172a;
  --gradient: linear-gradient(135deg, var(--accent) 0%, #0066cc 100%);
  --gradient-dark: linear-gradient(135deg, var(--primary) 0%, #051a3e 100%);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.15);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.2);
  --shadow-accent: 0 4px 25px rgba(0, 153, 255, 0.3);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Montserrat', sans-serif;
  background: var(--white);
  color: var(--gray-700);
  line-height: 1.6;
  overflow-x: hidden;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  padding: 6px 16px;
  background: rgba(0, 153, 255, 0.08);
  border-radius: 20px;
  border: 1px solid rgba(0, 153, 255, 0.2);
}

.section-header h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-header p {
  font-size: 17px;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================
   BUTTONS
======================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--gradient);
  color: var(--white);
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 153, 255, 0.45);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.4);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
  transform: translateY(-2px);
}

.btn-full { width: 100%; justify-content: center; }

/* ========================
   NAVBAR
======================== */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

#navbar.scrolled {
  background: rgba(11, 45, 102, 0.95);
  backdrop-filter: blur(20px);
  padding: 12px 0;
  box-shadow: 0 2px 30px rgba(0,0,0,0.3);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-text {
  width: 40px;
  height: 40px;
  background: var(--gradient);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 15px;
  color: white;
}

.logo-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
}

.logo-dot { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: rgba(255,255,255,0.8);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  background: var(--gradient) !important;
  color: var(--white) !important;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600 !important;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { transform: translateY(-1px); box-shadow: var(--shadow-accent); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========================
   HERO
======================== */
.hero {
  min-height: 100vh;
  background: var(--gradient-dark);
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,153,255,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,153,255,0.07) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-glow {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,153,255,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0.4;
  animation: float linear infinite;
}

@keyframes float {
  0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
  10% { opacity: 0.4; }
  90% { opacity: 0.4; }
  100% { transform: translateY(-10vh) rotate(720deg); opacity: 0; }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 24px 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(0,153,255,0.1);
  border: 1px solid rgba(0,153,255,0.3);
  border-radius: 20px;
  color: var(--accent-light);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.7; }
}

.hero-title {
  font-size: clamp(32px, 4.5vw, 56px);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 24px;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 17px;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-subtitle strong { color: var(--accent-light); }

.hero-stats {
  display: flex;
  gap: 32px;
  margin-bottom: 40px;
  padding: 24px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
}

.stat { text-align: center; }

.stat-number {
  font-size: 32px;
  font-weight: 800;
  color: var(--accent-light);
}

.stat-unit {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent-light);
}

.stat-label {
  display: block;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  font-weight: 500;
  margin-top: 4px;
}

.stat-divider {
  width: 1px;
  background: rgba(255,255,255,0.1);
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Hero card / visual */
.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  width: 100%;
  max-width: 380px;
  backdrop-filter: blur(20px);
  position: relative;
}

.profile-ring {
  position: relative;
  width: 160px;
  height: 160px;
  margin: 0 auto 24px;
}

.profile-placeholder {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: rgba(0,153,255,0.08);
  border: 3px solid var(--accent);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  color: rgba(255,255,255,0.4);
}

.profile-placeholder p {
  font-size: 11px;
  font-weight: 600;
}

.ring-decoration {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0,153,255,0.2);
  animation: rotate linear infinite;
}
.ring-1 { inset: -12px; animation-duration: 10s; }
.ring-2 { inset: -24px; animation-duration: 16s; animation-direction: reverse; }

@keyframes rotate { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.profile-info { text-align: center; }
.profile-info h3 { font-size: 18px; font-weight: 700; color: var(--white); margin-bottom: 4px; }
.profile-info p { font-size: 13px; color: var(--accent-light); margin-bottom: 16px; }

.profile-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.profile-tags span {
  padding: 4px 12px;
  background: rgba(0,153,255,0.1);
  border: 1px solid rgba(0,153,255,0.25);
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-light);
}

.floating-badges {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.float-badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: rgba(11,45,102,0.9);
  border: 1px solid rgba(0,153,255,0.3);
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-light);
  backdrop-filter: blur(10px);
  white-space: nowrap;
}

.badge-top-right { top: 24px; right: -16px; animation: bob 4s ease-in-out infinite; }
.badge-bottom-left { bottom: 48px; left: -16px; animation: bob 4s ease-in-out infinite 2s; }

@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.4);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(0,153,255,0.6), transparent);
  animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ========================
   SOBRE MÍ
======================== */
.sobre-mi { background: var(--gray-50); }

.sobre-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
}

.sobre-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.sobre-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--gray-100);
  border: 3px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 28px;
  color: var(--gray-400);
}

.sobre-timeline { display: flex; flex-direction: column; gap: 24px; }

.timeline-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.timeline-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gray-300);
  border: 2px solid var(--white);
  box-shadow: 0 0 0 2px var(--gray-300);
  margin-top: 4px;
  flex-shrink: 0;
  transition: var(--transition);
}

.timeline-item.active .timeline-dot {
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,153,255,0.2);
}

.timeline-year { display: block; font-size: 12px; color: var(--accent); font-weight: 700; margin-bottom: 2px; }
.timeline-content strong { display: block; color: var(--primary); font-weight: 700; margin-bottom: 2px; }
.timeline-content p { font-size: 13px; color: var(--gray-500); }

.sobre-intro {
  font-size: 17px;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 16px;
  line-height: 1.7;
}
.sobre-intro strong { color: var(--accent); }

.sobre-right > p {
  color: var(--gray-500);
  margin-bottom: 28px;
  line-height: 1.7;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 32px;
}

.skill-item {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 16px 12px;
  text-align: center;
  transition: var(--transition);
  cursor: default;
}

.skill-item:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-accent);
}

.skill-icon { font-size: 24px; margin-bottom: 6px; }
.skill-item span { font-size: 12px; font-weight: 600; color: var(--primary); }

.differentials h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}

.differentials ul { display: flex; flex-direction: column; gap: 10px; }

.differentials li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--gray-700);
}

.differentials li svg { color: var(--accent); flex-shrink: 0; }

/* ========================
   SERVICIOS
======================== */
.servicios { background: var(--white); }

.servicios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.service-card:hover::before { transform: scaleX(1); }

.service-icon-wrap {
  width: 56px;
  height: 56px;
  background: rgba(0,153,255,0.08);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 20px;
  transition: var(--transition);
}

.service-card:hover .service-icon-wrap {
  background: var(--gradient);
  color: var(--white);
}

.service-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}

.service-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }

.service-list li {
  font-size: 14px;
  color: var(--gray-500);
  padding-left: 16px;
  position: relative;
}

.service-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 12px;
}

.service-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(0,153,255,0.06);
  border: 1px solid rgba(0,153,255,0.15);
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.service-cta-card {
  background: var(--gradient-dark);
  border-color: transparent;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
}

.service-cta-card h3 { color: var(--white); }
.service-cta-card p { color: rgba(255,255,255,0.6); font-size: 14px; }
.service-cta-card:hover { transform: translateY(-6px); }
.service-cta-card::before { display: none; }

/* ========================
   LABORATORIO
======================== */
.laboratorio { background: var(--gray-900); position: relative; overflow: hidden; }

.laboratorio::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,153,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,153,255,0.04) 1px, transparent 1px);
  background-size: 50px 50px;
}

.laboratorio .section-header h2 { color: var(--white); }

.lab-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.lab-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  position: relative;
}

.lab-card:hover {
  background: rgba(0,153,255,0.06);
  border-color: rgba(0,153,255,0.3);
  transform: translateY(-4px);
}

.lab-featured {
  grid-column: span 2;
  background: linear-gradient(135deg, rgba(0,153,255,0.08), rgba(0,102,204,0.05));
  border-color: rgba(0,153,255,0.2);
}

.lab-badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--gradient);
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}

.lab-icon { font-size: 36px; margin-bottom: 16px; }

.lab-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}

.lab-card p {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  line-height: 1.6;
  margin-bottom: 16px;
}

.lab-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.lab-tech span {
  padding: 4px 10px;
  background: rgba(0,153,255,0.1);
  border: 1px solid rgba(0,153,255,0.2);
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-light);
}

/* ========================
   CASOS DE ÉXITO
======================== */
.casos { background: var(--gray-50); }

.casos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.caso-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.caso-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.caso-number {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 48px;
  font-weight: 800;
  color: var(--gray-100);
  line-height: 1;
}

.caso-icon { font-size: 28px; margin-bottom: 12px; }

.caso-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.caso-card p {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.6;
  margin-bottom: 16px;
}

.caso-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.caso-tags span {
  padding: 3px 10px;
  background: rgba(0,153,255,0.06);
  border: 1px solid rgba(0,153,255,0.15);
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
}

/* ========================
   BLOG
======================== */
.blog { background: var(--white); }

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.blog-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.blog-category {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.blog-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.blog-card p {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 20px;
}

.blog-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.blog-tag {
  padding: 3px 10px;
  background: var(--gray-100);
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  color: var(--gray-500);
}

.blog-link {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  transition: var(--transition);
}
.blog-link:hover { color: var(--primary-light); }

.blog-newsletter {
  background: var(--gradient-dark);
  border-color: transparent;
  align-items: center;
  text-align: center;
  gap: 16px;
  justify-content: center;
}

.newsletter-icon { font-size: 36px; }
.blog-newsletter h3 { color: var(--white); }
.blog-newsletter p { color: rgba(255,255,255,0.6); font-size: 14px; margin: 0; }

/* ========================
   CONTACTO
======================== */
.contacto { background: var(--gray-50); }

.contacto-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
}

.contacto-info h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 28px;
}

.contact-items { display: flex; flex-direction: column; gap: 16px; }

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  transition: var(--transition);
}

.contact-item:hover {
  border-color: var(--accent);
  transform: translateX(4px);
}

.contact-icon {
  width: 44px;
  height: 44px;
  background: rgba(0,153,255,0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.contact-label { display: block; font-size: 11px; font-weight: 700; color: var(--gray-400); text-transform: uppercase; letter-spacing: 1px; }
.contact-value { display: block; font-size: 14px; font-weight: 600; color: var(--primary); margin-top: 2px; }

.contacto-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  font-family: 'Montserrat', sans-serif;
  font-size: 14px;
  color: var(--gray-700);
  background: var(--white);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,153,255,0.1);
}

.form-group textarea { resize: vertical; min-height: 120px; }

/* ========================
   FOOTER
======================== */
.footer {
  background: var(--gray-900);
  color: rgba(255,255,255,0.6);
  padding: 60px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .nav-logo { margin-bottom: 16px; display: inline-flex; }
.footer-brand p { font-size: 13px; line-height: 1.7; max-width: 280px; }

.footer-links h4,
.footer-contact h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 13px; transition: var(--transition); }
.footer-links a:hover { color: var(--accent); }

.footer-contact p { font-size: 13px; margin-bottom: 8px; }
.footer-contact a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: rgba(255,255,255,0.35);
}

/* ========================
   BACK TO TOP
======================== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--gradient);
  border: none;
  border-radius: 10px;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-accent);
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 999;
}

.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-3px); }

/* ========================
   ANIMATIONS
======================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================
   RESPONSIVE
======================== */
@media (max-width: 1024px) {
  .servicios-grid { grid-template-columns: repeat(2, 1fr); }
  .casos-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }

  .nav-links { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(11,45,102,0.98); flex-direction: column; justify-content: center; align-items: center; gap: 36px; z-index: 999; }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 20px; }
  .hamburger { display: flex; z-index: 1000; position: relative; }

  /* HERO MOBILE */
  .hero {
    min-height: auto;
    padding-bottom: 60px;
  }
  .hero-content {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 90px 20px 40px;
    width: 100%;
  }
  .hero-visual { display: none; }
  .hero-title { font-size: 30px; }
  .hero-subtitle { font-size: 15px; }
  .hero-badge { font-size: 12px; }
  .hero-stats {
    gap: 12px;
    padding: 16px;
    flex-wrap: wrap;
    justify-content: space-around;
  }
  .stat-number { font-size: 22px; }
  .stat-label { font-size: 11px; }
  .stat-divider { display: none; }
  .hero-buttons { gap: 12px; }
  .hero-scroll { display: none; }

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

  .servicios-grid { grid-template-columns: 1fr; }
  .lab-grid { grid-template-columns: 1fr; }
  .lab-featured { grid-column: span 1; }
  .casos-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .contacto-grid { grid-template-columns: 1fr; }

  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
  .hero-content { padding: 80px 16px 40px; }
  .hero-title { font-size: 26px; }
  .hero-stats { flex-direction: column; gap: 12px; align-items: center; }
  .hero-buttons { flex-direction: column; }
  .btn { justify-content: center; width: 100%; }
}