:root {
  --color-fondo: #0f0f0f;
  --color-superficie: #1a1a1a;
  --color-bordes: #2a2a2a;
  --color-texto-principal: #f0f0f0;
  --color-texto-secundario: #888;
  --color-acento: #4ADE80;
  --color-acento-hover: #22C55E;
  --color-acento-glow: rgba(74, 222, 128, 0.12);
  --radius: 14px;
  --radius-sm: 8px;
  --transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  background: var(--color-fondo);
  color: var(--color-texto-principal);
  font-family: 'Google Sans', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

.container {
  width: min(1120px, calc(100% - 48px));
  margin-inline: auto;
}

.container-narrow {
  width: min(640px, calc(100% - 48px));
  margin-inline: auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 15, 15, 0.8);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--color-bordes);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--color-acento);
  letter-spacing: -0.03em;
  padding-left: 16px;
}

.nav-links {
  display: flex;
  gap: 2px;
  margin: 0 auto;
}

.nav-links a {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-texto-secundario);
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover {
  color: var(--color-texto-principal);
  background: var(--color-superficie);
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 0;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 80px;
  align-items: center;
}

.hero-text {
  max-width: 620px;
}

.hero h1 {
  font-size: clamp(36px, 5.5vw, 56px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin: 0 0 10px;
  color: var(--color-texto-principal);
}

.hero h2 {
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 500;
  line-height: 1.3;
  margin: 0 0 20px;
  color: var(--color-acento);
}

.hero p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-texto-secundario);
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-socials {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}

.hero-socials a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-bordes);
  color: var(--color-texto-secundario);
  font-size: 12px;
  font-weight: 500;
  transition: color var(--transition), border-color var(--transition), background var(--transition), transform var(--transition);
}

.hero-socials a:hover {
  color: var(--color-acento);
  border-color: var(--color-acento);
  background: var(--color-acento-glow);
  transform: translateY(-2px);
}

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

.hero-profile-img {
  width: 100%;
  max-width: 320px;
  border-radius: 20px;
  border: 2px solid var(--color-bordes);
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255,255,255,0.03);
  aspect-ratio: 1 / 1;
  object-fit: cover;
  transition: transform var(--transition), box-shadow var(--transition);
}

.hero-profile-img:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 50px 120px rgba(0, 0, 0, 0.6), 0 0 60px var(--color-acento-glow);
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 11px 24px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: all var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: var(--color-acento);
  color: #0f0f0f;
  box-shadow: 0 2px 12px var(--color-acento-glow);
}

.btn-primary:hover {
  background: var(--color-acento-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--color-acento-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--color-texto-principal);
  border: 1px solid var(--color-bordes);
}

.btn-secondary:hover {
  background: var(--color-superficie);
  border-color: var(--color-texto-secundario);
  transform: translateY(-1px);
}

.section {
  padding: 100px 0;
}

.section + .section {
  border-top: 1px solid var(--color-bordes);
}

.section-head {
  margin-bottom: 48px;
}

.eyebrow {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-acento);
  margin: 0 0 10px;
}

.section-title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin: 0;
  color: var(--color-texto-principal);
}

.about-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-texto-principal);
  margin-bottom: 4px;
}

.about-content > p:first-of-type {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-acento);
  margin-bottom: 20px;
}

.about-content p {
  color: var(--color-texto-secundario);
  line-height: 1.75;
  margin-bottom: 14px;
  font-size: 14px;
}

.about-content strong {
  color: var(--color-texto-principal);
}

.bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.card {
  background: var(--color-superficie);
  border: 1px solid var(--color-bordes);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: var(--color-acento);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px var(--color-acento-glow);
}

.card-span-2 {
  grid-column: span 2;
}

.card h3 {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-acento);
  margin: 0 0 14px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.card p {
  color: var(--color-texto-secundario);
  line-height: 1.65;
  margin: 0;
  font-size: 14px;
}

.cert-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cert-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--color-fondo);
  border-radius: 10px;
  border: 1px solid var(--color-bordes);
  transition: border-color var(--transition);
}

.cert-item:hover {
  border-color: rgba(74, 222, 128, 0.3);
}

.cert-icon {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-acento-glow);
  border-radius: var(--radius-sm);
  font-size: 16px;
  flex-shrink: 0;
}

.cert-text h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-texto-principal);
  margin: 0 0 1px;
}

.cert-text p {
  font-size: 11px;
  color: var(--color-texto-secundario);
  margin: 0;
}

.edu-highlight {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-texto-principal);
  margin-bottom: 4px;
}

.edu-year {
  font-size: 13px;
  color: var(--color-texto-secundario);
  margin-bottom: 0;
}

.edu-secondary {
  font-size: 13px;
  color: var(--color-texto-secundario);
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-bordes);
}

.stack-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.stack-category h4 {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-acento);
  margin: 0 0 14px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  padding: 6px 14px;
  background: var(--color-superficie);
  border: 1px solid var(--color-bordes);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-texto-principal);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.chip:hover {
  border-color: var(--color-acento);
  background: var(--color-acento-glow);
  transform: translateY(-1px);
}

.github-projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
}

.github-project-card {
  background: var(--color-superficie);
  border: 1px solid var(--color-bordes);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  cursor: default;
}

.github-project-card[href] {
  cursor: pointer;
}

.github-project-card:hover {
  border-color: var(--color-acento);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px var(--color-acento-glow);
}

.github-project-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-texto-principal);
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

.github-project-card p {
  font-size: 13px;
  color: var(--color-texto-secundario);
  line-height: 1.6;
  margin: 0 0 14px;
  flex: 1;
}

.github-project-card .project-link {
  color: var(--color-acento);
  font-size: 12px;
  font-weight: 600;
  transition: opacity var(--transition);
}

.github-project-card .project-link:hover {
  opacity: 0.75;
}

.project-private {
  font-size: 11px;
  color: var(--color-texto-secundario);
  font-style: italic;
  opacity: 0.6;
}

.language-pill {
  display: inline-block;
  padding: 3px 10px;
  background: var(--color-acento-glow);
  border: 1px solid rgba(74, 222, 128, 0.2);
  border-radius: 6px;
  font-size: 10px;
  font-weight: 700;
  color: var(--color-acento);
  margin-bottom: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.concepts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.concept-card {
  background: var(--color-superficie);
  border: 1px solid var(--color-bordes);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.concept-card:hover {
  border-color: var(--color-acento);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px var(--color-acento-glow);
}

.concept-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-texto-principal);
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.concept-card p {
  font-size: 13px;
  color: var(--color-texto-secundario);
  line-height: 1.65;
  margin: 0;
}

.section-intro {
  color: var(--color-texto-secundario);
  line-height: 1.75;
  margin-bottom: 32px;
  max-width: 640px;
  font-size: 14px;
}

.contact-section {
  text-align: center;
  padding: 120px 0;
}

.contact-section h2 {
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin: 0 0 24px;
  color: var(--color-texto-principal);
}

.contact-email {
  font-size: clamp(18px, 3vw, 24px);
  color: var(--color-acento);
  font-weight: 600;
  word-break: break-all;
  transition: opacity var(--transition);
}

.contact-email:hover {
  opacity: 0.8;
}

.footer {
  border-top: 1px solid var(--color-bordes);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer p {
  font-size: 11px;
  color: var(--color-texto-secundario);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-texto-secundario);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-acento);
}

@media (max-width: 960px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .hero-text {
    max-width: 100%;
  }

  .hero p {
    max-width: 100%;
  }

  .hero-image {
    order: -1;
  }

  .hero-profile-img {
    max-width: 200px;
  }

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

  .card-span-2 {
    grid-column: auto;
  }

  .stack-categories {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 720px) {
  .nav-links {
    display: none;
  }

  .container,
  .container-narrow {
    width: calc(100% - 32px);
  }

  .hero h1 {
    font-size: 32px;
  }

  .section {
    padding: 64px 0;
  }
}