/* Variables CSS - Sistema de Diseño */
:root {
  /* Colores Principales */
  --color-background: hsl(220, 20%, 7%);
  --color-foreground: hsl(220, 15%, 95%);
  --color-primary: hsl(217, 91%, 60%);
  --certificationsolor-primary-foreground: hsl(220, 20%, 7%);
  --color-secondary: hsl(220, 15%, 15%);
  --color-secondary-foreground: hsl(220, 15%, 85%);
  --color-accent: hsl(142, 76%, 36%);
  --color-accent-foreground: hsl(220, 20%, 7%);
  --color-muted: hsl(220, 15%, 15%);
  --color-muted-foreground: hsl(220, 10%, 60%);
  --color-border: hsl(220, 15%, 20%);
  
  /* Gradientes */
  --gradient-primary: linear-gradient(135deg, hsl(217, 91%, 60%), hsl(200, 100%, 70%));
  --gradient-secondary: linear-gradient(135deg, hsl(142, 76%, 36%), hsl(160, 100%, 45%));
  --gradient-hero: linear-gradient(135deg, hsl(220, 20%, 7%) 0%, hsl(217, 91%, 60%, 0.1) 100%);
  --gradient-card: linear-gradient(145deg, hsl(220, 15%, 10%, 0.8), hsl(220, 15%, 15%, 0.9));
  
  /* Sombras */
  --shadow-glow: 0 0 30px hsl(217, 91%, 60%, 0.3);
  --shadow-card: 0 8px 32px hsl(220, 20%, 7%, 0.4);
  --shadow-elevated: 0 20px 60px hsl(220, 20%, 7%, 0.6);
  
  /* Tipografía */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  --font-size-7xl: 4.5rem;
  
  /* Espaciado */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;
  
  /* Transiciones */
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-background);
  color: var(--color-foreground);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-background);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: hsl(217, 91%, 60%, 0.7);
}

/* Layout Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-4);
  }
}

/* Gradientes de texto */
.gradient-text {
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

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

/* Secciones principales */
section {
  padding: var(--spacing-20) 0;
}

@media (max-width: 768px) {
  section {
    padding: var(--spacing-16) 0;
  }
}

/* Headers de sección */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-16);
}

.section-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  margin-bottom: var(--spacing-6);
}

.section-description {
  font-size: var(--font-size-xl);
  color: var(--color-muted-foreground);
  max-width: 48rem;
  margin: 0 auto;
  line-height: 1.7;
}

@media (max-width: 768px) {
  .section-title {
    font-size: var(--font-size-4xl);
  }
  
  .section-description {
    font-size: var(--font-size-lg);
  }
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: var(--gradient-hero);
}

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

.floating-shape {
  position: absolute;
  width: 20rem;
  height: 20rem;
  border-radius: 50%;
  filter: blur(60px);
  animation: float 6s ease-in-out infinite;
}

.shape-1 {
  top: -10rem;
  right: -10rem;
  background: hsl(217, 91%, 60%, 0.1);
}

.shape-2 {
  bottom: -10rem;
  left: -10rem;
  background: hsl(142, 76%, 36%, 0.1);
  animation-delay: 2s;
}

.hero-content {
  text-align: center;
  max-width: 64rem;
  position: relative;
  z-index: 10;
}

.profile-image {
  margin-bottom: var(--spacing-8);
  display: flex;
  justify-content: center;
}

.profile-circle {
    width: 15rem;
    height: 15rem;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden; /* importante para que la imagen no sobresalga */
    box-shadow: 0 0 15px rgba(217, 91, 96, 0.5); /* reemplaza el glow del ::before */
    animation: glow 2s ease-in-out infinite alternate;
}

.profile-circle img.profile-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;   /* mantiene proporción y recorta si hace falta */
    border-radius: 50%;
    display: block;
    z-index: 1;
}



.profile-circle::before {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--color-secondary);
}

.profile-circle span {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: var(--font-size-7xl);
  font-weight: 700;
  margin-bottom: var(--spacing-6);
  animation: slideUp 0.6s ease-out;
}

.hero-subtitle {
  font-size: var(--font-size-3xl);
  color: var(--color-muted-foreground);
  margin-bottom: var(--spacing-8);
  animation: slideUp 0.6s ease-out 0.2s both;
}

.hero-description {
  font-size: var(--font-size-xl);
  color: var(--color-muted-foreground);
  margin-bottom: var(--spacing-12);
  max-width: 32rem;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
  animation: slideUp 0.6s ease-out 0.4s both;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-4);
  justify-content: center;
  margin-bottom: var(--spacing-16);
  animation: slideUp 0.6s ease-out 0.6s both;
  flex-wrap: wrap;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-12);
  animation: slideUp 0.6s ease-out 0.8s both;
}

.social-link {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-muted-foreground);
  text-decoration: none;
  transition: var(--transition-smooth);
  font-size: var(--font-size-lg);
}

.social-link:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: scale(1.1);
}

.scroll-indicator {
  animation: bounce 2s infinite;
}

.scroll-arrow {
  color: var(--color-muted-foreground);
  text-decoration: none;
  font-size: var(--font-size-2xl);
  transition: var(--transition-smooth);
}

.scroll-arrow:hover {
  color: var(--color-primary);
}

@media (max-width: 768px) {
  .hero-title {
    font-size: var(--font-size-5xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-2xl);
  }
  
  .hero-description {
    font-size: var(--font-size-lg);
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .profile-circle {
    width: 6rem;
    height: 6rem;
  }
  
  .profile-circle span {
    font-size: var(--font-size-3xl);
  }
}

/* About Section */
.about {
  background: hsl(220, 15%, 10%, 0.3);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
  align-items: center;
  margin-bottom: var(--spacing-20);
}

.about-text h3 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--spacing-6);
}

.text-content {
  color: var(--color-muted-foreground);
  line-height: 1.7;
}

.text-content p {
  margin-bottom: var(--spacing-4);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-6);
}

.stat-card {
  padding: var(--spacing-6);
  background: var(--gradient-card);
  border: 1px solid hsl(220, 15%, 20%, 0.5);
  border-radius: var(--radius-md);
  text-align: center;
  transition: var(--transition-smooth);
}

.stat-card:hover {
  border-color: hsl(217, 91%, 60%, 0.5);
  transform: translateY(-2px);
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-2);
}

.stat-label {
  color: var(--color-muted-foreground);
  font-size: var(--font-size-sm);
}

.skills-section {
  margin-top: var(--spacing-20);
}

.skills-title {
  text-align: center;
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-12);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-8);
}

.skill-card {
  padding: var(--spacing-6);
  background: var(--gradient-card);
  border: 1px solid hsl(220, 15%, 20%, 0.5);
  border-radius: var(--radius-md);
  transition: var(--transition-smooth);
}

.skill-card:hover {
  border-color: hsl(217, 91%, 60%, 0.5);
  transform: scale(1.02);
}

.skill-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-4);
}

.skill-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
}

.skill-header h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-2);
}

@media (max-width: 768px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
}

/* Projects Section */
.projects {
  background: hsl(220, 15%, 10%, 0.2);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-16);
}

.project-card {
  background: var(--gradient-card);
  border: 1px solid hsl(220, 15%, 20%, 0.5);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-smooth);
}

.project-card:hover {
  border-color: hsl(217, 91%, 60%, 0.5);
  transform: scale(1.02);
  box-shadow: var(--shadow-elevated);
}

.project-image {
  position: relative;
  height: 12rem;
  background: hsl(220, 15%, 15%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.placeholder-image {
  font-size: var(--font-size-6xl);
  opacity: 0.5;
}

.project-status {
  position: absolute;
  top: var(--spacing-4);
  right: var(--spacing-4);
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
  border: 1px solid;
}

.project-status.completed {
  background: hsl(142, 76%, 36%, 0.2);
  color: var(--color-accent);
  border-color: hsl(142, 76%, 36%, 0.3);
}

.project-status.development {
  background: hsl(217, 91%, 60%, 0.2);
  color: var(--color-primary);
  border-color: hsl(217, 91%, 60%, 0.3);
}

.project-content {
  padding: var(--spacing-6);
}

.project-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-3);
  transition: var(--transition-smooth);
}

.project-card:hover .project-title {
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.project-description {
  color: var(--color-muted-foreground);
  margin-bottom: var(--spacing-4);
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-4);
}

.project-features {
  margin-bottom: var(--spacing-6);
}

.project-features p {
  font-size: var(--font-size-sm);
  color: var(--color-muted-foreground);
  margin-bottom: var(--spacing-2);
}

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

.project-features li {
  font-size: var(--font-size-sm);
  color: var(--color-muted-foreground);
  margin-bottom: var(--spacing-1);
  display: flex;
  align-items: center;
}

.project-features li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  margin-right: var(--spacing-2);
}

.project-actions {
  display: flex;
  gap: var(--spacing-3);
}

.projects-cta {
  text-align: center;
  margin-top: var(--spacing-16);
}

.projects-cta p {
  color: var(--color-muted-foreground);
  margin-bottom: var(--spacing-6);
}

.certifications {
  padding: var(--spacing-1);
  max-width: 1200px;
  margin-top: var(--spacing-8);
  margin-bottom: var(--spacing-24);
  margin-left: auto;
  margin-right: auto;
}


.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); /* para que sea responsivo */
  gap: var(--spacing-6);  /* espacio entre certificaciones */
}

.cert-item {
  background: var(--gradient-card);
  border: 1px solid hsl(220, 15%, 20%, 0.5);
  border-radius: var(--radius-md);
  padding: var(--spacing-4);
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}


@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .project-actions {
    flex-direction: column;
  }
}