html {
  scroll-behavior: smooth;
}

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

:root {
  --primary-color: #6366f1;
  --secondary-color: #8b5cf6;
  --accent-color: #f59e0b;
  --bg-color: #0f172a;
  --card-bg: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --glow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.light-mode {
  --bg-color: #ffffff;
  --card-bg: #f8fafc;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --glow: 0 0 20px rgba(99, 102, 241, 0.1);
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  transition: all 0.3s ease;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(99, 102, 241, 0.2);
}

.light-mode header {
  background: rgba(255, 255, 255, 0.95);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.logo-img {
  width: 68px;
  height: 68px;
  object-fit: contain;
}

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

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.theme-toggle {
  background: none;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  background: var(--primary-color);
  color: white;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  padding-bottom: 80px;
  background: radial-gradient(
      circle at 20% 50%,
      rgba(99, 102, 241, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(139, 92, 246, 0.1) 0%,
      transparent 50%
    );
}

.hero-content {
  text-align: center;
  animation: fadeInUp 1s ease-out;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  margin-bottom: 1rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.hero-description {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 1rem 2rem;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: var(--glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

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

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

/* Sections */
section {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.project-card {
  background: var(--card-bg);
  border-radius: 20px;
  padding: 2rem;
  border: 1px solid rgba(99, 102, 241, 0.2);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

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

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.project-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.project-category {
  background: rgba(99, 102, 241, 0.2);
  color: var(--primary-color);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

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

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tech-tag {
  background: rgba(139, 92, 246, 0.2);
  color: var(--secondary-color);
  padding: 0.25rem 0.75rem;
  border-radius: 15px;
  font-size: 0.8rem;
}

.project-links {
  display: flex;
  gap: 1rem;
}

.project-links .btn {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
}

/* About */
.about-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.about-text {
  font-size: 1.1rem;
  line-height: 1.8;
}

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

.stat-card {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: 15px;
  text-align: center;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  display: block;
}

/* Skills */
.skills-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  max-width: 900px; /* Ajusta si necesitas más o menos espacio */
  margin: 0 auto;
}

.skill-category {
  width: 250px;
  min-height: 300px;
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 15px;
  border: 1px solid rgba(99, 102, 241, 0.2);
  display: flex;
  flex-direction: column;
  justify-content: flex-start; /* <- Aquí está el cambio clave */
  gap: 1rem; /* Opcional: espacio entre el título y la lista */
}

.skill-category h3 {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

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

.skill-item {
  background: rgba(99, 102, 241, 0.1);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
}

/* Experience */
.experience-timeline {
  position: relative;
  padding-left: 2rem;
}

.experience-timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gradient);
}

.experience-item {
  position: relative;
  margin-bottom: 3rem;
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 15px;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.experience-item::before {
  content: "";
  position: absolute;
  left: -2rem;
  top: 2rem;
  width: 12px;
  height: 12px;
  background: var(--primary-color);
  border-radius: 50%;
  transform: translateX(-50%);
}

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.experience-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.experience-company {
  color: var(--primary-color);
  font-weight: 600;
}

.experience-date {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Contact */
.contact-content {
  display: flex;
  justify-content: center;
  width: 100%;
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--card-bg);
  border-radius: 15px;
  border: 1px solid rgba(99, 102, 241, 0.2);
  min-width: 250px;
  width: 100%;
}

.contact-icon {
  width: 24px;
  height: 24px;
  fill: var(--primary-color);
  display: inline-block;
  vertical-align: middle;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 1.5rem 3rem;
  justify-content: center;
  margin: 0 auto;
}

.contact-form {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 15px;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.contact-column {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 600;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 10px;
  background: var(--bg-color);
  color: var(--text-primary);
  font-size: 1rem;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}
.contact-item a {
  text-decoration: none;
  color: var(--text-primary);
  transition: color 0.3s ease;
}

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

/* Footer */
footer {
  background: var(--card-bg);
  padding: 2rem 0;
  text-align: center;
  border-top: 1px solid rgba(99, 102, 241, 0.2);
}
.footer-logo {
  width: 30px;
  height: 30px;
  vertical-align: middle;
  margin: 0 4px;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}
/* Photo */
.about-photo-container {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

.about-photo {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: var(--glow);
  border: 3px solid var(--primary-color);
  transition: transform 0.3s ease;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 0 1rem;
  }

  .contact-item {
    justify-content: center;
  }

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

  .experience-timeline {
    padding-left: 1rem;
  }

  .container {
    padding: 0 15px;
  }
  .about-stats {
    grid-template-columns: 1fr;
  }
}