/* ===== RESET Y VARIABLES GLOBALES ===== */
:root {
  /* Colores principales - Tema ciberseguridad */
  --primary-color: #00ff88;
  --primary-dark: #00cc6a;
  --secondary-color: #0066ff;
  --accent-color: #ff0066;
  --cyber-blue: #00ffff;
  --cyber-purple: #8a2be2;
  
  /* Escala de grises */
  --dark-bg: #0a0a0f;
  --darker-bg: #050508;
  --card-bg: #111118;
  --card-hover: #1a1a25;
  --text-primary: #ffffff;
  --text-secondary: #b0b0c0;
  --text-muted: #6c6c80;
  --border-color: #2a2a3a;
  
  /* Tipografía */
  --font-main: 'Roboto', sans-serif;
  --font-heading: 'Montserrat', sans-serif;
  
  /* Espaciado */
  --section-padding: 5rem 2rem;
  --container-max: 1200px;
  
  /* Efectos */
  --glow-primary: 0 0 20px rgba(0, 255, 136, 0.3);
  --glow-secondary: 0 0 20px rgba(0, 102, 255, 0.3);
  --glow-accent: 0 0 20px rgba(255, 0, 102, 0.3);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== RESET Y BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* ===== FONDOS CYBER ===== */
.cyber-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(0, 255, 136, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(0, 102, 255, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(255, 0, 102, 0.03) 0%, transparent 50%);
  z-index: -2;
  pointer-events: none;
}

.cyber-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(0, 255, 136, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 136, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: -1;
  pointer-events: none;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(50px, 50px); }
}

/* ===== BARRA DE SEGURIDAD ===== */
.security-bar {
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  color: var(--dark-bg);
  padding: 0.5rem 2rem;
  text-align: center;
  font-weight: 600;
  font-size: 0.9rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--glow-primary);
}

.security-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: securityScan 3s infinite;
}

@keyframes securityScan {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* ===== HEADER PRINCIPAL ===== */
header {
  background: linear-gradient(135deg, rgba(10, 10, 15, 0.95), rgba(17, 17, 24, 0.9));
  backdrop-filter: blur(10px);
  padding: 4rem 2rem;
  text-align: center;
  position: relative;
  border-bottom: 1px solid var(--border-color);
}

.header-content {
  max-width: var(--container-max);
  margin: 0 auto;
}

.name {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-color), var(--cyber-blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 1rem;
  line-height: 1.1;
}

.tagline {
  font-size: 1.4rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-weight: 300;
}

.highlight {
  color: var(--primary-color);
  font-weight: 500;
}

/* ===== BADGES DE CERTIFICACIÓN ===== */
.certification-badges {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2rem 0;
}

.badge, .english-badge {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.badge:hover {
  border-color: var(--primary-color);
  box-shadow: var(--glow-primary);
  transform: translateY(-2px);
}

.english-badge {
  border-color: var(--secondary-color);
}

.english-badge:hover {
  border-color: var(--secondary-color);
  box-shadow: var(--glow-secondary);
}

/* ===== PROPOSICIÓN DE VALOR ===== */
.value-proposition {
  max-width: 600px;
  margin: 2rem auto;
  padding: 1.5rem;
  background: rgba(0, 255, 136, 0.05);
  border-left: 4px solid var(--primary-color);
  border-radius: 0 8px 8px 0;
}

.value-proposition p {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--text-primary);
}

/* ===== INFORMACIÓN DE CONTACTO ===== */
.contact-info {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem;
  margin: 2rem 0;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

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

/* ===== ACCIONES DEL HEADER ===== */
.header-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.download-cv, .contact-cta {
  padding: 0.8rem 2rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.download-cv {
  background: var(--primary-color);
  color: var(--dark-bg);
}

.download-cv:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--glow-primary);
}

.contact-cta {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.contact-cta:hover {
  background: var(--primary-color);
  color: var(--dark-bg);
  transform: translateY(-2px);
  box-shadow: var(--glow-primary);
}

/* ===== NAVEGACIÓN ===== */
.nav-container {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}

nav {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-color);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: var(--transition);
  transform: translateX(-50%);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 80%;
}

.social-icons {
  display: flex;
  gap: 1rem;
}

.social-icons a {
  color: var(--text-secondary);
  padding: 0.5rem;
  border-radius: 6px;
  transition: var(--transition);
}

.social-icons a:hover {
  color: var(--primary-color);
  background: rgba(0, 255, 136, 0.1);
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  gap: 4px;
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* ===== SECCIONES PRINCIPALES ===== */
main {
  position: relative;
}

section {
  padding: var(--section-padding);
  position: relative;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.section-title i {
  color: var(--primary-color);
  font-size: 2rem;
}

/* ===== SECCIÓN SOBRE MÍ ===== */
.about-content {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 3rem;
  align-items: start;
}

.about-text .intro {
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.expertise-areas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.expertise-item {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.expertise-item:hover {
  border-color: var(--primary-color);
  transform: translateY(-5px);
  box-shadow: var(--shadow-card), var(--glow-primary);
}

.expertise-item i {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.expertise-item h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.expertise-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

.quote {
  background: rgba(0, 255, 136, 0.05);
  border-left: 4px solid var(--primary-color);
  padding: 2rem;
  margin: 2rem 0;
  border-radius: 0 8px 8px 0;
  position: relative;
}

.quote i:first-child {
  color: var(--primary-color);
  font-size: 1.5rem;
  position: absolute;
  top: 1rem;
  left: 1rem;
}

.quote p {
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.7;
  margin-left: 2rem;
}

.learning-path {
  margin-top: 2rem;
}

.learning-path h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.learning-path ul {
  list-style: none;
  padding: 0;
}

.learning-path li {
  padding: 0.5rem 0;
  display: flex;
  align-items: start;
  gap: 0.5rem;
}

.learning-path li i {
  color: var(--primary-color);
  margin-top: 0.2rem;
}

/* ===== TERMINAL ===== */
.terminal-container {
  background: var(--darker-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.terminal-container:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-card), var(--glow-primary);
}

.terminal-header {
  background: #1a1a25;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.terminal-dots {
  display: flex;
  gap: 0.5rem;
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-red { background: #ff5f57; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #28ca42; }

.terminal-content {
  padding: 1.5rem;
  font-family: 'Courier New', monospace;
  font-size: 0.95rem;
  line-height: 1.5;
}

.prompt {
  color: var(--primary-color);
  font-weight: bold;
}

.command {
  color: var(--cyber-blue);
}

.typing-cursor {
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* ===== TIMELINE FORMACIÓN ===== */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  display: flex;
  margin-bottom: 3rem;
  position: relative;
}

.timeline-dot {
  width: 20px;
  height: 20px;
  background: var(--primary-color);
  border-radius: 50%;
  margin-right: 2rem;
  position: relative;
  z-index: 2;
  box-shadow: var(--glow-primary);
}

.timeline-content {
  flex: 1;
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.timeline-content:hover {
  border-color: var(--primary-color);
  transform: translateX(10px);
  box-shadow: var(--shadow-card), var(--glow-primary);
}

.timeline-content h3 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
}

.institution {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.status {
  color: var(--text-muted);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.courses h4 {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.courses ul {
  list-style: none;
  padding: 0;
}

.courses li {
  padding: 0.2rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.courses li i {
  color: var(--primary-color);
  font-size: 0.8rem;
}

/* ===== CERTIFICACIONES ===== */
.certifications-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.certification-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.certification-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
  transition: var(--transition);
}

.certification-card:hover::before {
  left: 100%;
}

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

.certification-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.certification-header i {
  font-size: 2rem;
  color: var(--primary-color);
}

.certification-header h3 {
  font-size: 1.2rem;
  color: var(--text-primary);
  flex: 1;
}

.badge-completed, .badge-progress {
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-completed {
  background: rgba(0, 255, 136, 0.2);
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

.badge-progress {
  background: rgba(0, 102, 255, 0.2);
  color: var(--secondary-color);
  border: 1px solid var(--secondary-color);
}

.certification-card p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.skills-gained {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  background: rgba(0, 102, 255, 0.1);
  color: var(--secondary-color);
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  font-size: 0.8rem;
  border: 1px solid rgba(0, 102, 255, 0.3);
}

.highlight-certification {
  border-color: var(--secondary-color);
  position: relative;
}

.highlight-certification::after {
  content: 'Destacado';
  position: absolute;
  top: -1px;
  right: -1px;
  background: var(--secondary-color);
  color: var(--dark-bg);
  padding: 0.5rem 1rem;
  border-radius: 0 12px 0 12px;
  font-size: 0.8rem;
  font-weight: 600;
}

.progress {
  background: var(--darker-bg);
  border-radius: 50px;
  height: 8px;
  margin: 1rem 0;
  overflow: hidden;
}

.progress-bar {
  background: linear-gradient(90deg, var(--secondary-color), var(--cyber-blue));
  height: 100%;
  border-radius: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dark-bg);
  font-size: 0.7rem;
  font-weight: 600;
  transition: width 2s ease-in-out;
}

.certifications-cta {
  text-align: center;
  margin-top: 3rem;
  padding: 2rem;
  background: rgba(0, 102, 255, 0.05);
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.certifications-cta p {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.btn-primary {
  background: var(--secondary-color);
  color: var(--text-primary);
  padding: 0.8rem 2rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--primary-color);
  color: var(--dark-bg);
  transform: translateY(-2px);
  box-shadow: var(--glow-primary);
}

/* ===== HABILIDADES ===== */
.skills-categories {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.category {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  transition: var(--transition);
}

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

.category h3 {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.skills-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.skill-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.skill-name {
  color: var(--text-primary);
  font-weight: 500;
}

.skill-level {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.level-bar {
  flex: 1;
  height: 8px;
  background: var(--darker-bg);
  border-radius: 50px;
  overflow: hidden;
  position: relative;
}

.level-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
  border-radius: 50px;
  width: 0;
  transition: width 1.5s ease-in-out;
}

.level-text {
  color: var(--text-muted);
  font-size: 0.9rem;
  min-width: 120px;
  text-align: right;
}

.skills-summary {
  max-width: var(--container-max);
  margin: 3rem auto 0;
  background: rgba(0, 255, 136, 0.05);
  border-left: 4px solid var(--primary-color);
  padding: 2rem;
  border-radius: 0 12px 12px 0;
}

.skills-summary h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.skills-summary p {
  color: var(--text-primary);
  line-height: 1.7;
}

/* ===== PROYECTOS ===== */
.projects-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}

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

.featured {
  border-color: var(--secondary-color);
}

.featured:hover {
  border-color: var(--secondary-color);
  box-shadow: var(--shadow-card), var(--glow-secondary);
}

.project-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--secondary-color);
  color: var(--dark-bg);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  z-index: 2;
}

.project-header {
  padding: 2rem 2rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.project-title {
  color: var(--text-primary);
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.project-subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.project-body {
  padding: 1.5rem 2rem 2rem;
}

.project-image {
  width: 100%;
  height: 200px;
  background: var(--darker-bg);
  border-radius: 8px;
  margin-bottom: 1.5rem;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.project-image:hover img {
  transform: scale(1.05);
}

.tools-used h4 {
  color: var(--text-primary);
  margin-bottom: 0.8rem;
  font-size: 1rem;
}

.tools-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tool {
  background: rgba(0, 102, 255, 0.1);
  color: var(--secondary-color);
  padding: 0.4rem 0.8rem;
  border-radius: 50px;
  font-size: 0.8rem;
  border: 1px solid rgba(0, 102, 255, 0.3);
}

.achievements h4 {
  color: var(--text-primary);
  margin-bottom: 0.8rem;
  font-size: 1rem;
}

.achievements ul {
  list-style: none;
  padding: 0;
}

.achievements li {
  padding: 0.5rem 0;
  display: flex;
  align-items: start;
  gap: 0.5rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.achievements li i {
  color: var(--primary-color);
  margin-top: 0.2rem;
  font-size: 0.8rem;
}

.project-resources {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.resource-btn {
  background: transparent;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
  padding: 0.6rem 1.2rem;
  border-radius: 50px;
  text-decoration: none;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.resource-btn:hover {
  background: var(--primary-color);
  color: var(--dark-bg);
  transform: translateY(-2px);
}

.projects-cta {
  text-align: center;
  margin-top: 3rem;
  padding: 2rem;
  background: rgba(0, 102, 255, 0.05);
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.projects-cta h3 {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
}

.projects-cta p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* ===== CONTACTO ===== */
.contact-container {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-intro h2 {
  color: var(--primary-color);
  font-size: 2rem;
  margin-bottom: 1rem;
}

.contact-intro p {
  color: var(--text-primary);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.contact-highlights {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.highlight-item {
  display: flex;
  align-items: start;
  gap: 1rem;
}

.highlight-item i {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-top: 0.2rem;
}

.highlight-item h4 {
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}

.highlight-item p {
  color: var(--text-secondary);
  margin: 0;
  font-size: 0.9rem;
}

.form-section {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
}

.form-title {
  color: var(--primary-color);
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  color: var(--text-primary);
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--darker-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.8rem 1rem;
  color: var(--text-primary);
  font-family: var(--font-main);
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

.form-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.5rem;
}

.word-counter {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.char-limit {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.error-message {
  color: var(--accent-color);
  font-size: 0.8rem;
  min-height: 1rem;
}

.btn-submit {
  background: var(--primary-color);
  color: var(--dark-bg);
  border: none;
  padding: 1rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-submit:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--glow-primary);
}

.loading-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top: 2px solid var(--dark-bg);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  display: none;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.form-status {
  padding: 1rem;
  border-radius: 8px;
  text-align: center;
  font-weight: 500;
  display: none;
}

.form-status.success {
  background: rgba(0, 255, 136, 0.1);
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
  display: block;
}

.form-status.error {
  background: rgba(255, 0, 102, 0.1);
  color: var(--accent-color);
  border: 1px solid var(--accent-color);
  display: block;
}

.contact-alternative {
  max-width: var(--container-max);
  margin: 3rem auto 0;
  text-align: center;
}

.contact-alternative h3 {
  color: var(--text-primary);
  margin-bottom: 2rem;
  font-size: 1.5rem;
}

.alternative-contacts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.alt-contact {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  transition: var(--transition);
}

.alt-contact:hover {
  border-color: var(--primary-color);
  transform: translateY(-5px);
  box-shadow: var(--shadow-card), var(--glow-primary);
}

.alt-contact i {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.alt-contact h4 {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.alt-contact p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.alt-contact a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.alt-contact a:hover {
  color: var(--cyber-blue);
  gap: 0.8rem;
}

/* ===== FOOTER ===== */
footer {
  background: var(--darker-bg);
  border-top: 1px solid var(--border-color);
  padding: 3rem 2rem 2rem;
}

.footer-content {
  max-width: var(--container-max);
  margin: 0 auto;
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-brand h3 {
  color: var(--primary-color);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.footer-brand p {
  color: var(--text-secondary);
  line-height: 1.5;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.link-group h4 {
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.link-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.link-group a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.link-group a:hover {
  color: var(--primary-color);
  padding-left: 0.5rem;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.security-badge {
  color: var(--text-muted);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.security-badge i {
  color: var(--primary-color);
}

.copyright {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ===== BOTÓN VOLVER ARRIBA ===== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: var(--dark-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  opacity: 0;
  visibility: hidden;
  z-index: 1000;
  box-shadow: var(--glow-primary);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-5px);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
  :root {
    --section-padding: 4rem 1.5rem;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .contact-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-main {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 3rem 1rem;
  }
  
  .name {
    font-size: 2.5rem;
  }
  
  .tagline {
    font-size: 1.2rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--dark-bg);
    flex-direction: column;
    padding: 2rem;
    border-top: 1px solid var(--border-color);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }
  
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }
  
  .header-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .certification-badges {
    flex-direction: column;
    align-items: center;
  }
  
  .contact-info {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }
  
  .expertise-areas {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .name {
    font-size: 2rem;
  }
  
  .tagline {
    font-size: 1.1rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .certifications-grid {
    grid-template-columns: 1fr;
  }
  
  .skills-categories {
    grid-template-columns: 1fr;
  }
  
  .alternative-contacts {
    grid-template-columns: 1fr;
  }
}

/* ===== ANIMACIONES DE ENTRADA ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== UTILIDADES ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center {
  text-align: center;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

/* ===== ESTADOS DE CARGA ===== */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { left: -100%; }
  100% { left: 100%; }
}