/* CSS VARIABLES — PALETA DE COLORES */
:root {
  /* Paleta principal */
  --color-bg:           #0D0F14;
  --color-surface:      #13161E;
  --color-surface-2:    #1A1E29;
  --color-border:       #252A38;
  --color-border-glow:  #2E3650;

  /* Acento principal — azul medio vivo */
  --color-accent:       #4A9EFF;
  --color-accent-dim:   #1A3D6A;
  --color-accent-glow:  rgba(74, 158, 255, 0.12);

  /* Acentos secundarios */
  --color-secondary:    #7B8CDE;   /* lavanda */
  --color-tertiary:     #FF6B6B;   /* coral */
  --color-amber:        #FFB830;   /* amarillo */

  /* Texto */
  --color-text:         #E8EAF0;
  --color-text-muted:   #6B7385;
  --color-text-subtle:  #9AA0B4;

  /* Tipografía */
  --font-display: 'Syne', sans-serif;
  --font-mono:    'Space Mono', monospace;

  /* Espaciado / forma */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;

  /* Transiciones */
  --transition-fast:  150ms ease;
  --transition-base:  300ms ease;
  --transition-slow:  600ms ease;
}

/* RESET & BASE */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-display);
  line-height: 1.6;
  overflow-x: hidden;
}

::selection { background: var(--color-accent); color: var(--color-bg); }

/* SCROLLBAR */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-border-glow); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-accent-dim); }

/* NAVBAR */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 3rem;
  background: rgba(13, 15, 20, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: padding var(--transition-base);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-decoration: none;
}
.nav-logo span { color: var(--color-text-muted); }

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.08em;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

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

/* HERO */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  padding: 8rem 3rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-content { animation: fadeInUp 0.8s ease both; }

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-accent);
  background: var(--color-accent-glow);
  border: 1px solid var(--color-accent-dim);
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}

.hero-tag::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.hero-name {
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}
.hero-name .accent { color: var(--color-accent); }

.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(0.85rem, 1.5vw, 1rem);
  color: var(--color-text-subtle);
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
  min-height: 1.4em;
}
.hero-title .sep { color: var(--color-border-glow); margin: 0 0.5rem; }

.hero-location {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

.hero-desc {
  font-size: 1rem;
  color: var(--color-text-subtle);
  max-width: 480px;
  line-height: 1.75;
  margin-bottom: 2.5rem;
}

/* CTA Buttons */
.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
}
.btn-primary:hover {
  background: #6DB8FF;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(74, 158, 255, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border-glow);
}
.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
  background: var(--color-accent-glow);
}

.btn svg { width: 16px; height: 16px; flex-shrink: 0; }

/* Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  animation: fadeInUp 0.8s 0.2s ease both;
}

.avatar-card {
  position: relative;
  width: 280px;
}

.avatar-frame {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-lg);
  background: var(--color-surface-2);
  border: 2px solid var(--color-border-glow);
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.avatar-frame::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--color-accent), transparent, var(--color-secondary));
  z-index: -1;
}

.avatar-placeholder { font-size: 5rem; opacity: 0.2; }

/* Floating badges */
.badge-float {
  position: absolute;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-glow);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-accent);
  white-space: nowrap;
  animation: float 3s ease-in-out infinite;
}

.badge-float:nth-child(2) { top: 10px;    right: -20px; animation-delay: 0.5s; }
.badge-float:nth-child(3) { bottom: 60px; left: -20px;  animation-delay: 1.0s; }
.badge-float:nth-child(4) { bottom: 10px; right: 0;     animation-delay: 1.5s; color: var(--color-secondary); }

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  width: 100%;
}

.stat-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  text-align: center;
}

.stat-num {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  margin-top: 0.2rem;
}

/* SECTION COMMON */
section {
  padding: 5rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 3rem;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--color-border), transparent);
}

/* SKILLS */
#skills { border-top: 1px solid var(--color-border); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1rem;
}

.skill-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1rem;
  text-align: center;
  cursor: default;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.skill-card:hover {
  border-color: var(--color-border-glow);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}

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

.skill-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  display: block;
}

.skill-name {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-text-subtle);
  letter-spacing: 0.05em;
}

/* PROJECTS */
#projects { border-top: 1px solid var(--color-border); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem; 
  justify-content: center;
  padding: 20px;
  width: 100%;
  max-width: 1200px; 
  margin: 0 auto;
}

.project-card {
  width: 100%;
  margin: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
}

.project-banner-container {
  width: 100%;
  height: 110px;
  border-radius: 4px;
}

.project-card:hover .banner-fill-bg {
  transform: scale(1.08);
}

.project-card:hover {
  border-color: var(--color-accent-dim);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
}

.project-header {
  padding: 1.25rem 1.25rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.project-num {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-accent);
  background: var(--color-accent-glow);
  border: 1px solid var(--color-accent-dim);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.project-status {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

.project-preview {
  display: block !important;
  margin: 1rem 1.25rem !important;
  height: 140px !important;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden !important;
  padding: 0 !important;
  position: relative !important;
  background: #0D1117;
}

.img-full-cover {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;
  object-position: center !important;
  display: block !important;
  border: none !important;
}

.project-card:hover .img-full-cover {
  transform: scale(1.1);
  transition: transform 0.4s ease;
}

.arch-diagram {
  width: 100%;
  height: 100%;
  padding: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.arch-diagram svg { width: 100%; height: 100%; }

.project-body {
  padding: 0 1.25rem 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.project-desc {
  font-size: 0.82rem;
  color: var(--color-text-subtle);
  line-height: 1.65;
  margin-bottom: 1rem;
  flex: 1;
}

.project-techs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.tech-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-secondary);
  background: rgba(123, 140, 222, 0.1);
  border: 1px solid rgba(123, 140, 222, 0.25);
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  letter-spacing: 0.04em;
}
.tech-badge .ticon { font-size: 0.8rem; }

.project-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
}

.btn-github {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--color-text-subtle);
  background: transparent;
  border: 1px solid var(--color-border);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-base);
  letter-spacing: 0.04em;
}

.btn-github:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-glow);
}
.btn-github svg { width: 14px; height: 14px; }

/* CERTIFICATIONS */
#certifications { border-top: 1px solid var(--color-border); }

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.cert-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: all var(--transition-base);
}

.cert-card:hover {
  border-color: var(--color-border-glow);
  transform: translateX(4px);
}

.cert-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.cert-info { flex: 1; }

.cert-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.cert-sub {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

.cert-status {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--color-amber);
  background: rgba(255, 184, 48, 0.1);
  border: 1px solid rgba(255, 184, 48, 0.25);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-top: 0.5rem;
  display: inline-block;
  letter-spacing: 0.04em;
}

/* FOOTER */
footer {
  border-top: 1px solid var(--color-border);
  padding: 2.5rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
}
.footer-copy span { color: var(--color-accent); }

.footer-links {
  display: flex;
  gap: 1rem;
}
.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--color-accent); }

/* CURSOR GLOW */
.cursor-glow {
  width: 320px; height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(74,158,255,0.05) 0%, transparent 70%);
  position: fixed;
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
  transition: left 0.12s ease, top 0.12s ease;
}

/* ANIMATIONS */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal:nth-child(2) { transition-delay: 0.10s; }
.reveal:nth-child(3) { transition-delay: 0.20s; }
.reveal:nth-child(4) { transition-delay: 0.30s; }
.reveal:nth-child(5) { transition-delay: 0.40s; }
.reveal:nth-child(6) { transition-delay: 0.50s; }

/* RESPONSIVE */
@media (max-width: 860px) {
  nav { padding: 1rem 1.5rem; }
  .nav-links { gap: 1.5rem; }

  .hero {
    grid-template-columns: 1fr;
    padding: 7rem 1.5rem 3rem;
    gap: 3rem;
  }
  .hero-visual { order: -1; }

  section { padding: 4rem 1.5rem; }

  footer {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
    padding: 2rem 1.5rem;
  }
}