/* Variables CSS */
:root {
  /* Colores */
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --secondary: #64748b;
  --accent: #06b6d4;
  
  /* Tema Oscuro */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  
  /* Tema Claro */
  --bg-primary-light: #ffffff;
  --bg-secondary-light: #f8fafc;
  --bg-card-light: #ffffff;
  --text-primary-light: #0f172a;
  --text-secondary-light: #334155;
  --text-muted-light: #64748b;
  
  /* Sombras */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Borders */
  --border: 1px solid rgb(148 163 184 / 0.1);
  --border-light: 1px solid rgb(148 163 184 / 0.2);
  
  /* Espaciado */
  --container-padding: 2rem;
  --section-padding: 5rem 0;
  
  /* Breakpoints */
  --mobile-small: 320px;
  --mobile: 480px;
  --tablet: 768px;
  --desktop: 1024px;
  --wide: 1280px;
  --ultra-wide: 1440px;
  
  /* Transiciones */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset y Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
}

/* Tema claro */
[data-theme="light"] {
  --bg-primary: var(--bg-primary-light);
  --bg-secondary: var(--bg-secondary-light);
  --bg-card: var(--bg-card-light);
  --text-primary: var(--text-primary-light);
  --text-secondary: var(--text-secondary-light);
  --text-muted: var(--text-muted-light);
}

/* Utilidades */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--section-padding);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease;
}

.loader {
  text-align: center;
}

.loader-circle {
  width: 50px;
  height: 50px;
  border: 3px solid var(--bg-secondary);
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  margin: 0 auto 1rem;
  animation: spin 1s linear infinite;
}

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

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(20px);
  z-index: 1000;
  border-bottom: var(--border);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(15, 23, 42, 0.98);
  box-shadow: var(--shadow-lg);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--container-padding);
  max-width: 1200px;
  margin: 0 auto;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  color: white;
}

.nav-name {
  font-weight: 600;
  font-size: 1.1rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

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

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle,
.lang-toggle {
  background: var(--bg-secondary);
  border: var(--border);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover,
.lang-toggle:hover {
  background: var(--bg-card);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 3px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: 4px;
  transition: var(--transition);
}

.nav-toggle:hover {
  background: var(--bg-secondary);
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu {
  position: fixed;
  top: 80px;
  left: 1rem;
  right: 1rem;
  background: var(--bg-card);
  border-radius: 1rem;
  padding: 2rem;
  z-index: 1001;
  transform: translateY(-20px);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-xl);
  border: var(--border);
}

.mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-menu .nav-link {
  display: block;
  padding: 1rem 0;
  border-bottom: var(--border);
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  transition: var(--transition);
}

.mobile-menu .nav-link:last-child {
  border-bottom: none;
}

.mobile-menu .nav-link:hover {
  color: var(--primary);
  padding-left: 1rem;
}
.main {
  margin-top: 80px;
}

/* Hero Section */
.hero {
  min-height: 110vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  position: relative;
  overflow: hidden;
  padding: 2rem 0;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 80%, var(--primary) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, var(--accent) 0%, transparent 50%);
  opacity: 0.1;
  z-index: -1;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--container-padding);
  flex: 1;
}

.hero-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 0.8rem;
}

.hero-subtitle {
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  max-width: 500px;
}

.highlight {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
  from { filter: brightness(1); }
  to { filter: brightness(1.2); }
}

.hero-actions {
  display: flex;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: var(--border-light);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--primary);
}

/* Hero Image */
.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-avatar {
  position: relative;
  text-align: center;
}

.avatar {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--primary);
  box-shadow: 0 20px 40px rgba(59, 130, 246, 0.3);
  animation: float 3s ease-in-out infinite;
  background: transparent;
  display: block;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

.avatar-status {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  border: var(--border);
  backdrop-filter: blur(10px);
}

.status-dot {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.status-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Tech Stack */
.tech-stack {
  position: relative;
  width: 100vw;
  left: 50%;
  transform: translateX(-50%);
  margin: 3rem 0 4rem 0;
  padding: 1rem 0;
  z-index: 10;
  overflow: hidden;
}

.tech-slider {
  display: flex;
  gap: 1.5rem;
  padding: 0;
  animation: slide 20s linear infinite;
  justify-content: flex-start;
  width: max-content;
}

.tech-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-card);
  padding: 0.6rem 1.2rem;
  border-radius: 2rem;
  border: var(--border);
  white-space: nowrap;
  backdrop-filter: blur(10px);
  font-size: 0.9rem;
}

.tech-item i {
  font-size: 1.1rem;
  color: var(--primary);
}

@keyframes slide {
  from { transform: translateX(100vw); }
  to { transform: translateX(-100%); }
}

/* About Section */
.about {
  background: var(--bg-secondary);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-intro {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

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

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.stat {
  text-align: center;
  padding: 1.5rem;
  background: var(--bg-card);
  border-radius: 1rem;
  border: var(--border);
}

.stat h3 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.stat p {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Skills */
.skills-grid {
  display: grid;
  gap: 2rem;
}

.skill-category {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: 1rem;
  border: var(--border);
}

.skill-category h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  background: var(--primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 500;
}

/* Experience Section */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

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

.timeline-item {
  position: relative;
  padding: 2rem 0 2rem 5rem;
  margin-bottom: 2rem;
}

.timeline-marker {
  position: absolute;
  left: 1.5rem;
  top: 2.5rem;
  width: 1rem;
  height: 1rem;
  background: var(--primary);
  border-radius: 50%;
  border: 3px solid var(--bg-primary);
}

.timeline-content {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: 1rem;
  border: var(--border);
}

.timeline-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

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

.timeline-date {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.timeline-content ul {
  list-style: none;
  margin-top: 1rem;
}

.timeline-content li {
  padding: 0.25rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-secondary);
}

.timeline-content li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--primary);
}

/* Certifications Section */
.certifications {
  background: var(--bg-secondary);
  padding: 3rem 0;
}

.certifications-grid {
  display: -ms-grid; /* IE 10-11 */
  display: grid;
  -ms-grid-columns: 1fr 1.5rem 1fr 1.5rem 1fr; /* IE 10-11 fallback */
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  -ms-grid-column-gap: 1.5rem; /* IE 10-11 */
  -ms-grid-row-gap: 1.5rem; /* IE 10-11 */
  margin-top: 2rem;
}

/* IE 10-11 fallback positioning */
.certification-card:nth-child(1) { 
  -ms-grid-column: 1; 
  grid-column: auto; /* Standard fallback */
}
.certification-card:nth-child(2) { 
  -ms-grid-column: 3; 
  grid-column: auto; /* Standard fallback */
}
.certification-card:nth-child(3) { 
  -ms-grid-column: 5; 
  grid-column: auto; /* Standard fallback */
}

/* Fallback para navegadores sin soporte de CSS Grid */
@supports not (display: grid) {
  .certifications-grid {
    display: block;
  }
  
  .certification-card {
    display: inline-block;
    width: calc(33.333% - 1rem);
    margin: 0 0.5rem 1.5rem 0.5rem;
    vertical-align: top;
  }
}

.certification-card {
  background: var(--bg-card);
  border-radius: 0.75rem;
  -webkit-border-radius: 0.75rem; /* Safari */
  -moz-border-radius: 0.75rem; /* Firefox */
  padding: 1.5rem;
  border: var(--border);
  transition: var(--transition);
  -webkit-transition: var(--transition); /* Safari */
  -moz-transition: var(--transition); /* Firefox */
  -o-transition: var(--transition); /* Opera */
  position: relative;
  overflow: hidden;
}

.certification-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  background: -webkit-linear-gradient(135deg, var(--primary), var(--accent)); /* Safari */
  background: -moz-linear-gradient(135deg, var(--primary), var(--accent)); /* Firefox */
}

.certification-card:hover {
  -webkit-transform: translateY(-5px); /* Safari */
  -moz-transform: translateY(-5px); /* Firefox */
  -ms-transform: translateY(-5px); /* IE 9 */
  -o-transform: translateY(-5px); /* Opera */
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  -webkit-box-shadow: var(--shadow-lg); /* Safari */
  -moz-box-shadow: var(--shadow-lg); /* Firefox */
}

.cert-header {
  display: -webkit-box; /* Safari old */
  display: -ms-flexbox; /* IE 10 */
  display: flex;
  -webkit-box-pack: justify; /* Safari old */
  -ms-flex-pack: justify; /* IE 10 */
  justify-content: space-between;
  -webkit-box-align: start; /* Safari old */
  -ms-flex-align: start; /* IE 10 */
  align-items: flex-start;
  margin-bottom: 0.75rem;
  gap: 1rem;
}

.cert-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.3;
  -webkit-box-flex: 1; /* Safari old */
  -ms-flex: 1; /* IE 10 */
  flex: 1;
}

.cert-level {
  background: var(--primary);
  background: #3b82f6; /* Fallback color */
  color: white;
  color: #ffffff; /* Explicit fallback */
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  -webkit-border-radius: 1rem; /* Safari */
  -moz-border-radius: 1rem; /* Firefox */
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
}

.cert-issuer {
  color: var(--text-secondary);
  color: #64748b; /* Fallback color */
  font-size: 0.9rem;
  margin: 0.5rem 0;
  font-weight: 500;
}

.cert-date {
  color: var(--accent);
  color: #06b6d4; /* Fallback color */
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-block;
  background: rgba(6, 182, 212, 0.1);
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
  -webkit-border-radius: 0.375rem; /* Safari */
  -moz-border-radius: 0.375rem; /* Firefox */
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--bg-card);
  border-radius: 1rem;
  overflow: hidden;
  border: var(--border);
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.project-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

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

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-card:hover .project-image img {
  transform: scale(1.1);
}

.project-link {
  color: white;
  font-size: 1.5rem;
  padding: 1rem;
  border-radius: 50%;
  background: var(--primary);
  transition: var(--transition);
}

.project-link:hover {
  transform: scale(1.1);
}

.project-content {
  padding: 2rem;
}

.project-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

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

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  border: var(--border);
}

/* Contact Section */
.contact {
  background: var(--bg-secondary);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.contact-item i {
  width: 50px;
  height: 50px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.contact-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.contact-item p {
  color: var(--text-secondary);
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.social-link {
  width: 50px;
  height: 50px;
  background: var(--bg-card);
  color: var(--text-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: var(--transition);
  border: var(--border);
}

.social-link:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-5px);
}

.social-link svg {
  width: 20px;
  height: 20px;
  transition: var(--transition);
}

/* Contact Form */
.contact-form {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: 1rem;
  border: var(--border);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  background: var(--bg-secondary);
  border: var(--border);
  border-radius: 0.5rem;
  color: var(--text-primary);
  font-family: inherit;
  resize: vertical;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Form Status Messages */
.form-status {
  padding: 1rem;
  border-radius: 0.5rem;
  margin-top: 1rem;
  font-weight: 500;
  text-align: center;
  animation: slideIn 0.3s ease-out;
}

.form-status.success {
  background-color: rgba(34, 197, 94, 0.1);
  color: #22c55e;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.form-status.error {
  background-color: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* CAPTCHA Styles */
.captcha-container {
  margin: 1.5rem 0;
  padding: 1rem;
  background: var(--bg-secondary);
  border: 2px solid var(--primary);
  border-radius: 0.75rem;
  position: relative;
}

.captcha-challenge {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.captcha-challenge label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--primary);
  font-size: 0.95rem;
}

.captcha-challenge label i {
  color: var(--accent);
}

.captcha-challenge input {
  padding: 0.75rem;
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.captcha-challenge input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  background: var(--bg-card);
}

.captcha-challenge input:invalid {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.captcha-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 0.25rem;
}

.captcha-container::before {
  content: '🛡️';
  position: absolute;
  top: -10px;
  right: 15px;
  background: var(--bg-primary);
  padding: 0 0.5rem;
  font-size: 1.2rem;
}

/* Footer */
.footer {
  background: var(--bg-primary);
  border-top: var(--border);
  padding: 2rem 0;
  text-align: center;
}

.footer p {
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

/* Responsive Design */

/* Large Desktop */
@media (min-width: 1440px) {
  .container {
    max-width: 1400px;
  }
  
  .hero-title {
    font-size: 4rem;
  }
  
  .section-title {
    font-size: 3rem;
  }
}

/* Desktop */
@media (max-width: 1280px) {
  .container {
    max-width: 1200px;
  }
}

/* Tablet Large */
@media (max-width: 1024px) {
  .hero-content,
  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
    padding: 0 var(--container-padding);
  }

  .hero-text {
    order: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
    max-width: none;
  }
  
  .hero-image {
    order: 1;
    display: flex;
    justify-content: center;
    width: 100%;
  }

  .hero-title {
    font-size: 2.8rem;
    text-align: center;
    width: 100%;
  }
  
  .hero-subtitle {
    font-size: 1.4rem;
    text-align: center;
    width: 100%;
  }

  .hero-description {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 2rem auto;
    width: 100%;
  }

  .hero-actions {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
  }

  .about-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }

  .certifications-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .nav-menu {
    gap: 1.5rem;
  }

  .nav-link {
    padding: 0.4rem 0.8rem;
    font-size: 0.95rem;
  }
}

/* Tablet */
@media (max-width: 768px) {
  :root {
    --container-padding: 1.5rem;
    --section-padding: 4rem 0;
  }

  .nav-menu {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav {
    padding: 0.8rem var(--container-padding);
  }

  .hero {
    min-height: 110vh;
    padding: 1.5rem 0;
  }

  .hero-content {
    gap: 2.5rem;
    padding: 0 var(--container-padding);
    text-align: center;
  }

  .hero-text {
    order: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
  }

  .hero-image {
    order: 1;
    display: flex;
    justify-content: center;
    width: 100%;
  }

  .hero-title {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    text-align: center;
    width: 100%;
  }

  .hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 1.2rem;
    text-align: center;
    width: 100%;
  }

  .hero-description {
    font-size: 1rem;
    margin: 0 auto 1.8rem auto;
    text-align: center;
    max-width: 500px;
    width: 100%;
    line-height: 1.6;
  }

  .hero-actions {
    gap: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 350px;
    margin: 0 auto;
  }

  .btn {
    padding: 0.7rem 1.3rem;
    font-size: 0.9rem;
  }

  .section-title {
    font-size: 2.2rem;
    margin-bottom: 2.5rem;
  }

  .about-stats {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .avatar {
    width: 240px;
    height: 240px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .certifications-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .timeline::before {
    left: 1rem;
  }

  .timeline-item {
    padding-left: 3rem;
  }

  .timeline-marker {
    left: 0.5rem;
  }

  .contact-content {
    gap: 2.5rem;
  }

  .tech-stack {
    width: 100vw;
    left: 50%;
    transform: translateX(-50%);
    margin: 2rem 0 3rem 0;
    padding: 0.8rem 0;
  }

  .tech-slider {
    gap: 1.2rem;
    padding: 0;
    animation: slide 10s linear infinite;
    width: max-content;
  }

  .tech-item {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }

  .tech-item i {
    font-size: 1rem;
  }

  .timeline-item {
    padding-left: 3rem;
  }

  .timeline-marker {
    left: 0.5rem;
  }
}

/* Mobile */
@media (max-width: 480px) {
  :root {
    --container-padding: 1rem;
    --section-padding: 3rem 0;
  }

  .nav {
    padding: 0.7rem var(--container-padding);
  }

  .nav-brand {
    gap: 0.4rem;
  }

  .nav-logo {
    width: 35px;
    height: 35px;
    font-size: 1.1rem;
  }

  .nav-name {
    font-size: 1rem;
  }

  .nav-actions {
    gap: 0.7rem;
  }

  .theme-toggle,
  .lang-toggle {
    width: 35px;
    height: 35px;
    font-size: 0.85rem;
  }

  .hero {
    min-height: 105vh;
    padding: 1rem 0;
  }

  .hero-content {
    gap: 2rem;
    padding: 0 var(--container-padding);
    text-align: center;
  }

  .hero-text {
    order: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
  }

  .hero-image {
    order: 1;
    display: flex;
    justify-content: center;
    width: 100%;
  }

  .hero-title {
    font-size: 1.8rem;
    line-height: 1.2;
    margin-bottom: 0.8rem;
    text-align: center;
    width: 100%;
  }

  .hero-subtitle {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    text-align: center;
    width: 100%;
  }

  .hero-description {
    font-size: 0.95rem;
    margin: 0 auto 1.5rem auto;
    line-height: 1.6;
    text-align: center;
    max-width: 100%;
    width: 100%;
    padding: 0 0.5rem;
  }

  .hero-actions {
    flex-direction: column;
    gap: 0.8rem;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
  }

  .btn {
    padding: 0.8rem 1.2rem;
    font-size: 0.9rem;
    width: 100%;
    justify-content: center;
  }

  .section-title {
    font-size: 1.9rem;
    margin-bottom: 2rem;
  }

  .avatar {
    width: 200px;
    height: 200px;
  }

  .avatar-status {
    bottom: 10px;
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
  }

  .status-dot {
    width: 6px;
    height: 6px;
  }

  .about-stats .stat {
    padding: 1.2rem;
  }

  .stat h3 {
    font-size: 1.6rem;
  }

  .stat p {
    font-size: 0.8rem;
  }

  .skill-category {
    padding: 1.5rem;
  }

  .skill-category h3 {
    font-size: 1.1rem;
  }

  .skill-tag {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
  }

  .timeline-content {
    padding: 1.5rem;
  }

  .timeline-content h3 {
    font-size: 1.1rem;
  }

  .project-content {
    padding: 1.5rem;
  }

  .project-content h3 {
    font-size: 1.1rem;
  }

  .contact-item {
    margin-bottom: 1.5rem;
  }

  .contact-item i {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .social-link {
    width: 45px;
    height: 45px;
  }

  .form-group {
    margin-bottom: 1.2rem;
  }

  .form-group label {
    font-size: 0.9rem;
  }

  .form-group input,
  .form-group textarea {
    padding: 0.7rem;
    font-size: 0.9rem;
  }

  .tech-stack {
    width: 100vw;
    left: 50%;
    transform: translateX(-50%);
    margin: 1.5rem 0 2.5rem 0;
    padding: 0.6rem 0;
  }

  .tech-slider {
    gap: 0.8rem;
    padding: 0;
    animation: slide 8s linear infinite;
    width: max-content;
  }

  .tech-item {
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
  }

  .tech-item i {
    font-size: 0.9rem;
  }
}

/* Mobile Small */
@media (max-width: 360px) {
  :root {
    --container-padding: 0.8rem;
    --section-padding: 2.5rem 0;
  }

  .nav {
    padding: 0.6rem var(--container-padding);
  }

  .nav-logo {
    width: 32px;
    height: 32px;
    font-size: 1rem;
  }

  .nav-name {
    font-size: 0.9rem;
  }

  .theme-toggle,
  .lang-toggle {
    width: 32px;
    height: 32px;
    font-size: 0.8rem;
  }

  .hero-content {
    gap: 1.5rem;
    padding: 0 var(--container-padding);
    text-align: center;
  }

  .hero-text {
    order: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
  }

  .hero-image {
    order: 1;
    display: flex;
    justify-content: center;
    width: 100%;
  }

  .hero-title {
    font-size: 1.6rem;
    line-height: 1.3;
    margin-bottom: 0.6rem;
    text-align: center;
    width: 100%;
  }

  .hero-subtitle {
    font-size: 1rem;
    margin-bottom: 0.8rem;
    text-align: center;
    width: 100%;
  }

  .hero-description {
    font-size: 0.9rem;
    margin: 0 auto 1.2rem auto;
    line-height: 1.5;
    text-align: center;
    max-width: 100%;
    width: 100%;
    padding: 0 0.3rem;
  }

  .hero-actions {
    flex-direction: column;
    gap: 0.6rem;
    width: 100%;
    max-width: 280px;
    margin: 0 auto;
  }

  .avatar {
    width: 180px;
    height: 180px;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .btn {
    padding: 0.7rem 1rem;
    font-size: 0.85rem;
    width: 100%;
    justify-content: center;
  }

  .about-stats .stat {
    padding: 1rem;
  }

  .stat h3 {
    font-size: 1.4rem;
  }

  .skill-category {
    padding: 1.2rem;
  }

  .timeline-content,
  .project-content {
    padding: 1.2rem;
  }

  .contact-item i {
    width: 35px;
    height: 35px;
  }

  .social-link {
    width: 40px;
    height: 40px;
  }
}