/* ============================================
   RESET & BASE
============================================ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { font-family: var(--font-display); margin: 0; line-height: 1.15; letter-spacing: -0.01em; }
p { margin: 0; }
button { font-family: inherit; cursor: pointer; }
:focus-visible {
  outline: 2px solid var(--blue-bright);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Faint circuit-board backdrop, fixed behind all content */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 15% -10%, rgba(79,125,253,0.16), transparent 60%),
    radial-gradient(ellipse 60% 40% at 90% 10%, rgba(155,107,255,0.12), transparent 60%),
    var(--bg);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-bright);
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}

section { padding: var(--space-xl) 0; position: relative; scroll-margin-top: 76px; }
.section-head { max-width: 640px; margin-bottom: var(--space-lg); }
.section-head h2 { font-size: var(--fs-h1); margin-top: 0.6rem; }
.section-head p { color: var(--text-muted); margin-top: 1rem; font-size: 1.05rem; }

/* Circuit-trace divider: signature element between sections */
.trace-divider {
  height: 2px;
  width: 100%;
  background: var(--grad-trace);
  opacity: 0.5;
  position: relative;
}
.trace-divider::after {
  content: "";
  position: absolute;
  top: -3px; left: 50%;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px 2px var(--cyan);
  transform: translateX(-50%);
}

/* ============================================
   BUTTONS
============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast), background var(--dur-fast);
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--grad-primary);
  color: #050810;
}
.btn-primary:hover { box-shadow: 0 8px 24px -8px rgba(79,125,253,0.6); }
.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--blue-bright); background: var(--blue-soft); }
.btn-sm { padding: 0.55rem 1.1rem; font-size: 0.85rem; }

/* ============================================
   NAVBAR
============================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.1rem 0;
  background: rgba(7, 10, 20, 0.4);
  backdrop-filter: blur(0px);
  border-bottom: 1px solid transparent;
  transition: background var(--dur-fast), border-color var(--dur-fast), backdrop-filter var(--dur-fast), padding var(--dur-fast);
}
.navbar.scrolled {
  background: rgba(7, 10, 20, 0.85);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
  padding: 0.75rem 0;
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; }
.nav-logo {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
}
.nav-logo span { color: var(--blue-bright); }
.nav-links { display: flex; gap: var(--space-md); }
.nav-links a {
  font-size: 0.92rem;
  color: var(--text-muted);
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--dur-fast);
}
.nav-links a::after {
  content: "";
  position: absolute; left: 0; bottom: -2px;
  width: 0; height: 1px;
  background: var(--grad-primary);
  transition: width var(--dur-fast) var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; }

@media (max-width: 860px) {
  .nav-links {
    position: fixed;
    top: 64px; right: 0;
    background: var(--panel);
    border-left: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: var(--space-md);
    gap: var(--space-sm);
    transform: translateX(100%);
    transition: transform var(--dur-med) var(--ease);
    border-radius: 0 0 0 var(--radius-md);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-toggle { display: block; }
}

/* ============================================
   HERO
============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 90px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-lg);
  align-items: center;
}
.hero-status {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--space-sm);
}
.hero-status .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: pulse 2s infinite;
}
.hero h1 {
  font-size: var(--fs-hero);
  font-weight: 600;
}
.hero h1 .accent {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-role {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-top: var(--space-sm);
  height: 1.6em;
}
.hero-role .cursor { color: var(--blue-bright); animation: blink 1s step-end infinite; }
.hero p.hero-tagline {
  margin-top: var(--space-sm);
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 46ch;
}
.hero-actions { display: flex; gap: var(--space-sm); margin-top: var(--space-md); flex-wrap: wrap; }

.hero-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  position: relative;
  overflow: hidden;
}
.hero-panel::before {
  content: "● ● ●";
  display: block;
  color: var(--text-dim);
  letter-spacing: 4px;
  margin-bottom: var(--space-sm);
  font-size: 0.7rem;
}
.hero-panel .line { margin-bottom: 0.35rem; color: var(--text-muted); }
.hero-panel .key { color: var(--purple-bright); }
.hero-panel .val { color: var(--cyan); }
.hero-panel .str { color: var(--blue-bright); }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-panel { order: -1; }
}

/* ============================================
   SOBRE
============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.4fr;
  gap: var(--space-lg);
}
.about-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  height: fit-content;
}
.about-card .avatar-photo {
  width: 84px; height: 84px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 15%;
  border: 2px solid var(--border-strong);
  box-shadow: 0 0 0 4px var(--blue-soft);
  margin-bottom: var(--space-sm);
}
.about-card h3 { font-size: 1.2rem; }
.about-card .role { color: var(--text-muted); font-size: 0.9rem; margin-top: 0.25rem; }
.about-card .facts { margin-top: var(--space-md); display: flex; flex-direction: column; gap: 0.7rem; }
.about-card .facts li { font-size: 0.88rem; color: var(--text-muted); display: flex; gap: 0.6rem; }
.about-card .facts li strong { color: var(--text); font-weight: 500; }

.about-text p { color: var(--text-muted); margin-bottom: 1.1rem; font-size: 1.02rem; }
.about-text strong { color: var(--text); font-weight: 600; }

@media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; } }

/* ============================================
   OBJETIVOS
============================================ */
.goals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-sm);
}
.goal-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-sm);
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast);
}
.goal-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.goal-card .num {
  font-family: var(--font-mono);
  color: var(--text-dim);
  font-size: 0.8rem;
}
.goal-card p { margin-top: 0.6rem; color: var(--text); font-size: 0.98rem; }

/* ============================================
   TECNOLOGIAS
============================================ */
.tech-categories { display: flex; flex-direction: column; gap: var(--space-md); }
.tech-category h3 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--purple-bright);
  margin-bottom: var(--space-sm);
}
.tech-row { display: flex; flex-wrap: wrap; gap: 0.7rem; }
.tech-chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.55rem 1rem;
  font-size: 0.88rem;
  transition: border-color var(--dur-fast), transform var(--dur-fast);
}
.tech-chip:hover { border-color: var(--blue-bright); transform: translateY(-2px); }
.tech-chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--blue-bright); }

/* ============================================
   PROJETOS
============================================ */
.filter-row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
}
.filter-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  transition: all var(--dur-fast);
}
.filter-btn:hover { border-color: var(--border-strong); color: var(--text); }
.filter-btn.active {
  background: var(--grad-primary);
  color: #050810;
  border-color: transparent;
  font-weight: 600;
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}
.project-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast);
}
.project-card:hover { transform: translateY(-6px); border-color: var(--border-strong); }
.project-card .icon-badge {
  width: 46px; height: 46px;
  border-radius: var(--radius-sm);
  background: var(--blue-soft);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
}
.project-card h3 { font-size: 1.15rem; }
.project-card .category {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--purple-bright);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.project-card p.desc { color: var(--text-muted); font-size: 0.92rem; }
.project-card .tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  background: var(--panel-alt);
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.project-card details { font-size: 0.86rem; color: var(--text-muted); }
.project-card summary { cursor: pointer; color: var(--blue-bright); font-size: 0.85rem; margin-bottom: 0.4rem; }
.project-card details ul { margin-top: 0.4rem; padding-left: 1.1rem; list-style: disc; }
.project-card details li { margin-bottom: 0.2rem; }
.project-card .card-actions { display: flex; gap: 0.6rem; margin-top: auto; padding-top: 0.5rem; }

.project-card .card-cover {
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--panel-alt);
  margin: calc(var(--space-sm) * -1) calc(var(--space-md) * -1) 0;
  width: calc(100% + var(--space-md) * 2);
}
.project-card .card-cover img { width: 100%; height: 100%; object-fit: cover; }
.project-card .card-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.4rem;
}
.project-card .card-gallery img {
  width: 100%; aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast);
}
.project-card .card-gallery img:hover { transform: translateY(-2px); border-color: var(--blue-bright); }

.featured-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.6rem;
}
.featured-gallery img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast);
}
.featured-gallery img:hover { transform: translateY(-3px); border-color: var(--blue-bright); }
.featured-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
}
.featured-card::before {
  content: "";
  position: absolute; inset: -40% -20% auto auto;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(155,107,255,0.18), transparent 70%);
  pointer-events: none;
}
.featured-card .tag-featured {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.featured-card h3 { font-size: 2rem; margin-top: 0.5rem; }
.featured-card p.desc { color: var(--text-muted); margin-top: var(--space-sm); }
.featured-visual {
  border-radius: var(--radius-md);
  background: var(--panel-alt);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  min-height: 240px;
}
.featured-list { margin-top: var(--space-sm); }
.featured-list h4 { font-family: var(--font-mono); font-size: 0.8rem; color: var(--purple-bright); text-transform: uppercase; margin-bottom: 0.5rem; }
.featured-list ul { list-style: disc; padding-left: 1.2rem; color: var(--text-muted); font-size: 0.92rem; }
.featured-list li { margin-bottom: 0.3rem; }

@media (max-width: 900px) { .featured-card { grid-template-columns: 1fr; } }

/* ============================================
   TIMELINE
============================================ */
.timeline {
  position: relative;
  padding-left: 2rem;
  border-left: 2px solid var(--border);
}
.timeline-item { position: relative; padding-bottom: var(--space-md); }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute; left: -2.42rem; top: 0.3rem;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--blue-bright);
}
.timeline-item.is-visible::before { box-shadow: 0 0 10px var(--blue-bright); }
.timeline-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
}
.timeline-item h4 { font-size: 1.05rem; margin-top: 0.3rem; }
.timeline-item p { color: var(--text-muted); font-size: 0.92rem; margin-top: 0.3rem; }

/* ============================================
   GITHUB STATS
============================================ */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-sm);
}
.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  text-align: center;
}
.stat-card .number {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-card .label { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.4rem; }

/* ============================================
   CERTIFICADOS
============================================ */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-sm);
}
.cert-card {
  background: var(--panel);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  text-align: center;
  color: var(--text-dim);
}
.cert-empty { grid-column: 1 / -1; text-align: center; padding: var(--space-lg) var(--space-md); }
.cert-empty .icon { font-size: 2rem; margin-bottom: 0.6rem; }
.cert-empty p { color: var(--text-muted); }

.cert-card-filled {
  border-style: solid;
  border-color: var(--border);
  padding: 0;
  overflow: hidden;
  cursor: pointer;
  color: var(--text);
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast);
}
.cert-card-filled:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.cert-thumb { aspect-ratio: 16 / 11; overflow: hidden; background: var(--panel-alt); }
.cert-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-med) var(--ease); }
.cert-card-filled:hover .cert-thumb img { transform: scale(1.05); }
.cert-info { padding: var(--space-sm) var(--space-md); text-align: left; }
.cert-info h3 { font-size: 1rem; margin-bottom: 0.35rem; }
.cert-issuer { font-size: 0.85rem; color: var(--text-muted); }
.cert-meta { font-family: var(--font-mono); font-size: 0.75rem; color: var(--cyan); margin-top: 0.35rem; }

.cert-lightbox {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(4, 6, 14, 0.92);
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-md);
  animation: fadeInUp 0.25s var(--ease);
}
.cert-lightbox-inner { position: relative; max-width: min(90vw, 900px); max-height: 88vh; }
.cert-lightbox-inner img { max-width: 100%; max-height: 88vh; border-radius: var(--radius-md); border: 1px solid var(--border-strong); display: block; }
.cert-lightbox-close {
  position: absolute; top: -14px; right: -14px;
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--panel); border: 1px solid var(--border-strong);
  color: var(--text); font-size: 1.4rem; line-height: 1;
  display: flex; align-items: center; justify-content: center;
}
.cert-lightbox-close:hover { border-color: var(--blue-bright); }

/* ============================================
   CURRICULO
============================================ */
.cv-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.cv-card h3 { font-size: 1.3rem; }
.cv-card p { color: var(--text-muted); margin-top: 0.5rem; }

/* ============================================
   CONTATO
============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}
.contact-links { display: flex; flex-direction: column; gap: var(--space-sm); }
.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  transition: border-color var(--dur-fast), transform var(--dur-fast);
}
.contact-link:hover { border-color: var(--blue-bright); transform: translateX(4px); }
.contact-link .icon { font-size: 1.4rem; }
.contact-link .label { font-size: 0.8rem; color: var(--text-dim); }
.contact-link .value { font-size: 0.98rem; color: var(--text); }

.contact-form { display: flex; flex-direction: column; gap: var(--space-sm); }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-size: 0.85rem; color: var(--text-muted); font-family: var(--font-mono); }
.form-group input, .form-group textarea {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.8rem 1rem;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--dur-fast);
}
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--blue-bright);
  outline: none;
}
.form-note { font-size: 0.8rem; color: var(--text-dim); }

@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }

/* ============================================
   FOOTER
============================================ */
footer {
  border-top: 1px solid var(--border);
  padding: var(--space-md) 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}
footer a { color: var(--text-muted); }
footer a:hover { color: var(--blue-bright); }

/* ============================================
   BACK TO TOP
============================================ */
.back-to-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  color: var(--text);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity var(--dur-fast), transform var(--dur-fast);
  z-index: 90;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; }
.back-to-top:hover { transform: translateY(-3px); border-color: var(--blue-bright); }