/* ─── CSS Custom Properties ─────────────────────────────────────────────── */
:root {
  --bg-primary:    #050a14;
  --bg-secondary:  #090f1e;
  --bg-card:       rgba(14, 22, 42, 0.75);
  --bg-glass:      rgba(10, 18, 35, 0.6);
  --accent-blue:   #00b4ff;
  --accent-cyan:   #00e5ff;
  --accent-purple: #7c3aed;
  --accent-violet: #a855f7;
  --accent-pink:   #ec4899;
  --neon-glow:     0 0 20px rgba(0,180,255,0.5), 0 0 60px rgba(0,180,255,0.2);
  --purple-glow:   0 0 20px rgba(168,85,247,0.5), 0 0 60px rgba(168,85,247,0.2);
  --text-primary:  #f0f6ff;
  --text-secondary:#94a3b8;
  --text-muted:    #475569;
  --border-glass:  rgba(0,180,255,0.15);
  --border-card:   rgba(255,255,255,0.06);
  --radius-sm:     8px;
  --radius-md:     14px;
  --radius-lg:     20px;
  --radius-xl:     28px;
  --transition:    all 0.35s cubic-bezier(0.4,0,0.2,1);
  --font-main:     'Inter', sans-serif;
  --font-mono:     'JetBrains Mono', monospace;
}

/* ─── Reset & Base ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
}
::selection { background: rgba(0,180,255,0.3); color: #fff; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
ul { list-style: none; }

/* ─── Scrollbar ─────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent-purple); border-radius: 3px; }

/* ─── Animated Background Canvas ───────────────────────────────────────── */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ─── Gradient Orbs (decorative) ────────────────────────────────────────── */
.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.12;
  pointer-events: none;
  z-index: 0;
  animation: orbFloat 18s ease-in-out infinite;
}
.orb-1 { width: 600px; height: 600px; background: radial-gradient(circle, #00b4ff, transparent); top: -200px; left: -200px; animation-delay: 0s; }
.orb-2 { width: 500px; height: 500px; background: radial-gradient(circle, #7c3aed, transparent); top: 40%; right: -150px; animation-delay: -6s; }
.orb-3 { width: 400px; height: 400px; background: radial-gradient(circle, #00e5ff, transparent); bottom: -100px; left: 30%; animation-delay: -12s; }
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -40px) scale(1.05); }
  66%       { transform: translate(-20px, 20px) scale(0.95); }
}

/* ─── Layout Wrapper ────────────────────────────────────────────────────── */
.content-wrapper { position: relative; z-index: 1; }
.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
section { padding: 100px 0; }

/* ─── Navbar ─────────────────────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 18px 0;
  transition: var(--transition);
}
#navbar.scrolled {
  background: rgba(5,10,20,0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  padding: 12px 0;
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}
.nav-links {
  display: flex;
  gap: 6px;
  align-items: center;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 50%; right: 50%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
  border-radius: 2px;
  transition: var(--transition);
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { left: 14px; right: 14px; }
.nav-links a.active { color: var(--accent-blue); }
.nav-links a.active::after { left: 14px; right: 14px; }

/* Hamburger */
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--accent-blue); border-radius: 2px; transition: var(--transition); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: rgba(5,10,20,0.97);
  backdrop-filter: blur(20px);
  padding: 20px 24px 28px;
  border-bottom: 1px solid var(--border-glass);
  z-index: 999;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 12px 0;
  border-bottom: 1px solid var(--border-card);
  transition: var(--transition);
}
.mobile-menu a:hover { color: var(--accent-blue); padding-left: 8px; }

/* ─── Hero Section ────────────────────────────────────────────────────────── */
#inicio {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
  width: 100%;
}
.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent-cyan);
  background: rgba(0,229,255,0.08);
  border: 1px solid rgba(0,229,255,0.2);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.hero-label .dot {
  width: 6px; height: 6px;
  background: var(--accent-cyan);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity:1; transform:scale(1); } 50% { opacity:0.5; transform:scale(0.8); } }

.hero-name {
  font-size: clamp(2.8rem, 5.5vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #f0f6ff 0%, #94b4d4 60%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-title-wrapper {
  height: 48px;
  overflow: hidden;
  margin-bottom: 24px;
}
.hero-title {
  font-size: clamp(1rem, 2.2vw, 1.4rem);
  font-weight: 600;
  color: var(--accent-blue);
  font-family: var(--font-mono);
}
.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background: var(--accent-cyan);
  margin-left: 2px;
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 0%,100% { opacity:1; } 50% { opacity:0; } }

.hero-bio {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.75;
  margin-bottom: 36px;
}
.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: #fff;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  opacity: 0;
  transition: opacity 0.35s;
}
.btn-primary:hover::before { opacity: 1; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--neon-glow); }
.btn-primary span { position: relative; z-index: 1; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  cursor: pointer;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}
.btn-secondary:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  transform: translateY(-2px);
  box-shadow: var(--neon-glow);
  background: rgba(0,180,255,0.06);
}

/* Hero photo */
.hero-photo-wrap {
  position: relative;
  flex-shrink: 0;
}
.hero-photo-ring {
  position: relative;
  width: 260px; height: 260px;
  border-radius: 50%;
  padding: 4px;
  box-shadow: var(--neon-glow), var(--purple-glow);
}
.hero-photo-ring::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(from 0deg, var(--accent-blue), var(--accent-violet), var(--accent-cyan), var(--accent-blue));
  animation: spinRing 8s linear infinite;
}
@keyframes spinRing { to { transform: rotate(360deg); } }
.hero-photo-inner {
  position: relative;
  z-index: 1;
  width: 100%; height: 100%;
  border-radius: 50%;
  overflow: hidden;
  background: var(--bg-secondary);
  border: 3px solid var(--bg-primary);
}
.hero-photo-inner img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.hero-photo-badge {
  position: absolute;
  z-index: 2;
  bottom: 12px; right: -8px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  padding: 8px 14px;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: #fff;
  box-shadow: var(--neon-glow);
  white-space: nowrap;
}

/* Stats bar */
.stats-bar {
  margin-top: 60px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.stat-item {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  padding: 20px 24px;
  text-align: center;
  transition: var(--transition);
}
.stat-item:hover { background: rgba(0,180,255,0.06); }
.stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  font-family: var(--font-mono);
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 4px;
}
.stat-label { font-size: 0.78rem; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.5px; }

/* ─── Section Headers ─────────────────────────────────────────────────────── */
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-cyan);
  background: rgba(0,229,255,0.07);
  border: 1px solid rgba(0,229,255,0.18);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 14px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-violet) 50%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle { font-size: 1rem; color: var(--text-secondary); max-width: 560px; margin: 0 auto; }

/* ─── About Section ───────────────────────────────────────────────────────── */
#sobre-mi { background: linear-gradient(180deg, transparent 0%, rgba(7,14,28,0.6) 50%, transparent 100%); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.about-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 36px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.about-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet), var(--accent-cyan));
}
.about-card:hover { border-color: var(--border-glass); transform: translateY(-4px); box-shadow: 0 20px 60px rgba(0,0,0,0.3); }
.about-text { font-size: 1rem; color: var(--text-secondary); line-height: 1.85; }
.about-text strong { color: var(--accent-cyan); font-weight: 600; }
.about-title-sm {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.about-title-sm .icon { font-size: 1.2rem; }
.soft-skills-list { display: flex; flex-direction: column; gap: 12px; }
.soft-skill-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.soft-skill-item::before {
  content: '';
  width: 8px; height: 8px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
  border-radius: 2px;
  flex-shrink: 0;
  margin-top: 5px;
}

/* ─── Scroll Reveal Animation ─────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-left { opacity: 0; transform: translateX(-40px); transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1); }
.reveal-left.visible { opacity: 1; transform: translateX(0); }
.reveal-right { opacity: 0; transform: translateX(40px); transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1); }
.reveal-right.visible { opacity: 1; transform: translateX(0); }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* ─── Experience Timeline ─────────────────────────────────────────────────── */
#experiencia { background: transparent; }
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-blue), var(--accent-violet), var(--accent-cyan));
  transform: translateX(-50%);
  opacity: 0.4;
}
.timeline-item {
  display: grid;
  grid-template-columns: 1fr 40px 1fr;
  gap: 0 20px;
  margin-bottom: 48px;
  align-items: start;
}
.timeline-item:nth-child(even) .timeline-card { grid-column: 3; }
.timeline-item:nth-child(even) .timeline-spacer { grid-column: 2; }
.timeline-item:nth-child(even) .timeline-empty { grid-column: 1; }
.timeline-item:nth-child(odd) .timeline-card { grid-column: 1; }
.timeline-item:nth-child(odd) .timeline-spacer { grid-column: 2; }
.timeline-item:nth-child(odd) .timeline-empty { grid-column: 3; }

.timeline-dot {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: var(--neon-glow);
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}
.timeline-dot::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(0,180,255,0.3);
  animation: dotPulse 2.5s ease-in-out infinite;
}
@keyframes dotPulse { 0%,100% { transform:scale(1); opacity:0.5; } 50% { transform:scale(1.2); opacity:0.15; } }

.timeline-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.timeline-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
  opacity: 0;
  transition: opacity 0.35s;
}
.timeline-card:hover { border-color: var(--border-glass); transform: translateY(-4px); box-shadow: 0 20px 50px rgba(0,0,0,0.35); }
.timeline-card:hover::before { opacity: 1; }

.tl-company {
  font-size: 0.72rem;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.tl-role {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.3;
}
.tl-dates {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.tl-dates::before { content: '◆'; font-size: 0.5rem; color: var(--accent-blue); }
.tl-points { display: flex; flex-direction: column; gap: 7px; }
.tl-point {
  font-size: 0.84rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.5;
}
.tl-point::before {
  content: '→';
  color: var(--accent-blue);
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.tl-current {
  position: absolute;
  top: 14px; right: 14px;
  font-size: 0.65rem;
  font-weight: 600;
  font-family: var(--font-mono);
  color: #0f0;
  background: rgba(0,255,0,0.08);
  border: 1px solid rgba(0,255,0,0.2);
  padding: 3px 10px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Volunteer / non-job entry */
.tl-card-volunteer {
  border-color: rgba(168,85,247,0.2);
}
.tl-card-volunteer::before {
  background: linear-gradient(90deg, var(--accent-violet), var(--accent-pink));
}
.tl-company-vol { color: var(--accent-violet); }

/* ─── Projects Section ────────────────────────────────────────────────────── */
#proyectos {
  background: linear-gradient(180deg, transparent 0%, rgba(7,14,28,0.5) 50%, transparent 100%);
}
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.project-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  transition: var(--transition);
  border: 1px solid var(--border-card);
}
.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  padding: 1px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet), var(--accent-cyan));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.35s;
}
.project-card:hover::before { opacity: 1; }
.project-card:hover { transform: translateY(-6px); box-shadow: 0 24px 60px rgba(0,0,0,0.4); }

.project-header {
  padding: 28px 28px 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}
.project-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(0,180,255,0.15), rgba(168,85,247,0.15));
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}
.project-status {
  font-size: 0.65rem;
  font-weight: 600;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 100px;
}
.status-live { color: #0f0; background: rgba(0,255,0,0.08); border: 1px solid rgba(0,255,0,0.2); }
.status-prod { color: var(--accent-cyan); background: rgba(0,229,255,0.08); border: 1px solid rgba(0,229,255,0.2); }
.status-progress { color: var(--accent-violet); background: rgba(168,85,247,0.1); border: 1px solid rgba(168,85,247,0.25); }
.status-private { color: var(--text-secondary); background: rgba(148,163,184,0.1); border: 1px solid rgba(148,163,184,0.22); }

.project-body { padding: 20px 28px 28px; }
.project-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  letter-spacing: -0.3px;
}
.project-subtitle {
  font-size: 0.8rem;
  color: var(--accent-blue);
  font-family: var(--font-mono);
  margin-bottom: 14px;
}
.project-desc { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 20px; }
.project-features { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }
.project-feature {
  font-size: 0.82rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.project-feature::before { content: '✦'; color: var(--accent-violet); font-size: 0.65rem; flex-shrink: 0; margin-top: 3px; }
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.project-tag {
  font-size: 0.7rem;
  font-weight: 600;
  font-family: var(--font-mono);
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(0,180,255,0.08);
  border: 1px solid rgba(0,180,255,0.15);
  color: var(--accent-blue);
  transition: var(--transition);
}
.project-tag:hover { background: rgba(0,180,255,0.15); border-color: var(--accent-blue); }
.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 18px;
}
.project-links a {
  color: var(--accent-cyan);
  font-size: 0.75rem;
  font-weight: 700;
  transition: var(--transition);
}
.project-links a:hover { color: var(--text-primary); transform: translateX(2px); }

/* ─── Skills Section ──────────────────────────────────────────────────────── */
#habilidades { background: transparent; }
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.skill-category {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.skill-category::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s;
}
.skill-category:hover { border-color: var(--border-glass); transform: translateY(-4px); }
.skill-category:hover::after { transform: scaleX(1); }

.skill-cat-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.skill-cat-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(0,180,255,0.15), rgba(168,85,247,0.15));
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.skill-cat-name { font-size: 0.9rem; font-weight: 700; color: var(--text-primary); }
.badges { display: flex; flex-wrap: wrap; gap: 7px; }
.badge {
  font-size: 0.72rem;
  font-weight: 600;
  font-family: var(--font-mono);
  padding: 5px 12px;
  border-radius: 100px;
  transition: var(--transition);
  cursor: default;
}
.badge-blue { background: rgba(0,180,255,0.1); border: 1px solid rgba(0,180,255,0.2); color: var(--accent-blue); }
.badge-violet { background: rgba(168,85,247,0.1); border: 1px solid rgba(168,85,247,0.2); color: var(--accent-violet); }
.badge-cyan { background: rgba(0,229,255,0.1); border: 1px solid rgba(0,229,255,0.2); color: var(--accent-cyan); }
.badge-pink { background: rgba(236,72,153,0.1); border: 1px solid rgba(236,72,153,0.2); color: var(--accent-pink); }
.badge-green { background: rgba(34,197,94,0.1); border: 1px solid rgba(34,197,94,0.2); color: #22c55e; }
.badge:hover { transform: translateY(-2px) scale(1.05); }

/* ─── Education Section ───────────────────────────────────────────────────── */
#educacion {
  background: linear-gradient(180deg, transparent 0%, rgba(7,14,28,0.5) 50%, transparent 100%);
}
.edu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.edu-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 28px;
  transition: var(--transition);
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.edu-card:hover { border-color: var(--border-glass); transform: translateY(-4px); box-shadow: 0 20px 50px rgba(0,0,0,0.3); }
.edu-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  box-shadow: var(--neon-glow);
}
.edu-info { flex: 1; }
.edu-degree { font-size: 0.95rem; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; line-height: 1.3; }
.edu-school { font-size: 0.82rem; font-weight: 600; color: var(--accent-blue); margin-bottom: 4px; }
.edu-period { font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-mono); }

/* Certifications */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 48px;
}
.cert-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.cert-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: linear-gradient(180deg, var(--accent-blue), var(--accent-violet));
}
.cert-card:hover { border-color: var(--border-glass); transform: translateY(-3px); }
.cert-name { font-size: 0.85rem; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; line-height: 1.4; }
.cert-issuer { font-size: 0.75rem; color: var(--accent-cyan); font-weight: 500; margin-bottom: 4px; }
.cert-date { font-size: 0.7rem; color: var(--text-muted); font-family: var(--font-mono); }

/* ─── Contact Section ────────────────────────────────────────────────────── */
#contacto { background: transparent; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 40px;
  align-items: start;
}
.contact-grid-single {
  grid-template-columns: minmax(0, 620px);
  justify-content: center;
}
.contact-info { display: flex; flex-direction: column; gap: 16px; }
.contact-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
  text-decoration: none;
}
.contact-card:hover { border-color: var(--border-glass); transform: translateX(6px); }
.contact-icon {
  width: 42px; height: 42px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(0,180,255,0.15), rgba(168,85,247,0.15));
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.contact-detail { flex: 1; }
.contact-label { font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); margin-bottom: 2px; }
.contact-value { font-size: 0.9rem; color: var(--text-primary); font-weight: 500; }

/* ─── Footer ─────────────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border-card);
  padding: 40px 0 28px;
  background: rgba(5,10,20,0.8);
  backdrop-filter: blur(20px);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-copy { font-size: 0.8rem; color: var(--text-muted); }
.footer-socials { display: flex; gap: 12px; }
.social-btn {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
  color: var(--text-secondary);
}
.social-btn:hover { border-color: var(--accent-blue); color: var(--accent-blue); transform: translateY(-2px); box-shadow: var(--neon-glow); }

/* ─── Dividers & Utilities ────────────────────────────────────────────────── */
.divider {
  width: 60px; height: 3px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
  border-radius: 2px;
  margin: 16px auto 0;
}

/* ─── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .certs-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline { max-width: 100%; }
}

@media (max-width: 860px) {
  /* Hero */
  .hero-grid { grid-template-columns: 1fr; text-align: center; justify-items: center; }
  .hero-photo-wrap { order: -1; }
  .hero-bio { margin: 0 auto 36px; }
  .hero-cta { justify-content: center; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }

  /* About */
  .about-grid { grid-template-columns: 1fr; gap: 24px; }

  /* Timeline — single column on tablets */
  .timeline::before { left: 20px; transform: none; }
  .timeline-item {
    display: grid;
    grid-template-columns: 40px 1fr;
    grid-template-rows: auto;
    gap: 0 16px;
  }
  .timeline-item .timeline-spacer {
    grid-column: 1 !important;
    grid-row: 1;
    justify-self: center;
    margin-top: 20px;
  }
  .timeline-item .timeline-card {
    grid-column: 2 !important;
    grid-row: 1;
  }
  .timeline-item .timeline-empty { display: none !important; }

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

  /* Education */
  .edu-grid { grid-template-columns: 1fr; }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; }

  /* Nav */
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
}

@media (max-width: 600px) {
  section { padding: 72px 0; }
  .container { padding: 0 16px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .skills-grid { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: 1fr; }
  .hero-photo-ring { width: 200px; height: 200px; }
  .section-title { letter-spacing: -0.5px; }
  .edu-grid { grid-template-columns: 1fr; }
  .about-card { padding: 24px; }
  .timeline-card { padding: 18px 20px; }

  /* Fix overflow on very small screens */
  .hero-photo-badge { right: 0; font-size: 0.62rem; padding: 6px 10px; }
  .tl-current { font-size: 0.6rem; padding: 2px 8px; }
}

@media (max-width: 400px) {
  .stats-bar { grid-template-columns: 1fr 1fr; }
  .stat-item { padding: 16px 12px; }
  .stat-number { font-size: 1.4rem; }
  .hero-name { letter-spacing: -1px; }
}