/* RESET */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html, body {
  width: 100%;
  height: 100%;
  overflow-x: hidden; /* remove scroll lateral */
  font-family: 'Poppins', sans-serif; 
  background: var(--bg); 
  color: var(--text); 
  margin: 0; 
  scroll-behavior: smooth;
  
}

/* VARIÁVEIS */
:root {
  --bg: #0f0f1a;
  --text: #f5f5f7;
  --primary: #7c3aed;
  --secondary: #22d3ee;
  --muted: #9ca3af;
  --card: rgba(255,255,255,0.05);
  --radius: 14px;
  --shadow: 0 6px 18px rgba(0,0,0,0.4);
}

/* CONTAINER E SEÇÃO */
.container {
  width: min(1100px, 90%);
  margin: 0 auto;
  padding: 2rem 0;
}
.section {
  min-height: 100vh;
  padding: 5rem 0;
}
.section.alt {
  background: rgba(255,255,255,0.02);
}
h2 {
  text-align: center;
  margin-bottom: 2rem;
  color: var(--secondary);
}

/* CANVAS DE PARTÍCULAS */
#bg-particles {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1; /* fica atrás */
  display: block;
}

/* HEADER */
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  position: fixed;
  top:0;
  width:100%;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(10px);
  z-index:100;
}
.logo {
  font-weight: 800;
  color: var(--primary);
  font-size: 1.2rem;
  text-decoration: none;
}
.nav a {
  margin: 0 1rem;
  color: var(--text);
  text-decoration: none;
}
.btn {
  background: var(--primary);
  color: var(--text);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: .3s;
}
.btn:hover {
  background: var(--secondary);
}
.btn.ghost {
  background: transparent;
  border: 1px solid var(--primary);
}
.btn.tiny {
  font-size: .85rem;
  padding: .3rem .7rem;
}

/* ---------- HERO refinado ---------- */
.hero { 
  min-height: 100vh; 
  display: flex; 
  align-items: center; 
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  font-size: .85rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  padding: .35rem .6rem;
  border-radius: 999px;
  margin-bottom: .9rem;
}

.hero-text h1 {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  line-height: 1.1;
  margin-bottom: .4rem;
}

.grad {
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.subtitle {
  color: var(--muted);
  margin-bottom: 1rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem .6rem;
  margin: 1rem 0 1.2rem;
}
.hero-badges span {
  font-size: .85rem;
  padding: .45rem .7rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.03);
  color: var(--text);
}

/* Botões mais presentes */
.hero-buttons { display: flex; gap: .8rem; }
.btn { 
  position: relative; 
  overflow: hidden;
}
.btn:hover { transform: translateY(-1px); }
.btn.ghost:hover { border-color: var(--secondary); }

/* Foto com borda gradiente e halo suave */
.hero-photo { display: flex; justify-content: center; }
.photo-frame {
  position: relative;
  padding: 10px;                    /* cria espaço pro “anel” */
  border-radius: 20px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
}
.photo-frame img {
  display: block;
  width: min(420px, 90vw);
  height: auto;
  border-radius: 16px;
  object-fit: cover;
  background: #0b0b14;
}
.photo-frame::after {
  content: "";
  position: absolute;
  inset: -14px;
  border-radius: 28px;
  background: radial-gradient(60% 60% at 50% 40%, rgba(124,58,237,.35), rgba(34,211,238,.0));
  filter: blur(18px);
  z-index: -1;
  pointer-events: none;
}

/* Indicador de scroll */
.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  font-size: 1.4rem;
  text-decoration: none;
  color: rgba(255,255,255,.6);
  transition: transform .25s ease, color .25s ease;
}
.scroll-cue:hover { 
  color: var(--secondary); 
  transform: translateX(-50%) translateY(-2px); 
}

/* Responsivo */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-buttons { justify-content: center; }
  .hero-badges { justify-content: center; }
  .photo-frame { margin-top: 1.2rem; }
}


/* ---------- PROJETOS ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .3s ease, box-shadow .3s ease;
}
.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 28px rgba(0,0,0,.5);
}

.project-img img {
  width: 100%;
  display: block;
  object-fit: cover;
  aspect-ratio: 16/9;
}

.project-content {
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: .8rem;
  flex: 1;
}
.project-content h3 {
  margin: 0;
  font-size: 1.3rem;
  color: var(--secondary);
}
.project-content p {
  flex: 1;
  font-size: .95rem;
  color: var(--muted);
  line-height: 1.4;
}

.project-links {
  display: flex;
  gap: .6rem;
  margin-top: auto;
}

.btn.tiny {
  font-size: .85rem;
  padding: .35rem .7rem;
}


/* ---------- SKILLS ---------- */
.skills-intro {
  text-align: center;
  margin-bottom: 2rem;
  color: var(--muted);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1.5rem;
  justify-items: center;
}

.skill-card {
  background: var(--card);
  border-radius: 50%;
  width: 110px;
  height: 110px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  transition: transform .3s ease, background .3s ease;
  text-align: center;
  cursor: default;
}
.skill-card:hover {
  transform: scale(1.1);
  background: rgba(255,255,255,0.07);
}

.skill-card img {
  width: 48px;
  height: 48px;
  margin-bottom: .4rem;
}

.skill-card p {
  font-size: .85rem;
  color: var(--text);
  margin: 0;
}


/* ---------- CONTATO ---------- */
.contato-sub {
  text-align: center;
  color: var(--muted);
  margin-bottom: 2rem;
}

.contato-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.contato-card {
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  color: white;
  transition: transform .3s ease, box-shadow .3s ease;
  box-shadow: var(--shadow);
}
.contato-card .icon {
  font-size: 2rem;
  margin-bottom: .6rem;
}
.contato-card h3 {
  margin: 0;
  font-size: 1.2rem;
}
.contato-card p {
  font-size: .9rem;
  margin: .4rem 0 0;
  opacity: .9;
}

.contato-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 26px rgba(0,0,0,.5);
}

/* Cores individuais */
.contato-card.email { background: #d44638; }
.contato-card.github { background: #24292f; }
.contato-card.linkedin { background: #0a66c2; }

/* ---------- SOBRE ---------- */
.sobre-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.sobre-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform .3s ease, background .3s ease;
}
.sobre-card:hover {
  transform: translateY(-6px);
  background: rgba(255,255,255,0.05);
}

.sobre-card .icon {
  font-size: 2rem;
  margin-bottom: .8rem;
}
.sobre-card h3 {
  margin: .5rem 0 1rem;
  color: var(--secondary);
}
.sobre-card p {
  font-size: .95rem;
  color: var(--muted);
  line-height: 1.5;
}

/* ---------- TEMA ---------- */

* {
  transition: background 0.4s ease, color 0.4s ease, border 0.4s ease;
}


:root {
  --bg: #0f0f1a;
  --text: #f5f5f7;
  --primary: #7c3aed;
  --secondary: #22d3ee;
  --muted: #9ca3af;
  --card: rgba(255,255,255,0.05);
  --radius: 12px;
  --shadow: 0 6px 18px rgba(0,0,0,0.4);
}
.light-mode {
  --bg: #e8e8f0;
  --text: #111;
  --primary: #6366f1;
  --secondary: #0ea5e9;
  --muted: #555;
  --card: rgba(0,0,0,0.05);
  --shadow: 0 6px 18px rgba(0,0,0,0.2);
}

.theme-toggle {
  margin-left: 1rem;
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--text);
}



/* FOOTER */
.footer {
  text-align: center;
  padding: 1rem;
  color: var(--muted);
  font-size: .9rem;
}

#backToTop {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  border: none;
  border-radius: 50%;
  background: var(--primary, #7c3aed);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(0,0,0,0.4);
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease, transform .3s ease;
}

#backToTop.show {
  opacity: 1;
  pointer-events: auto;
}

#backToTop:hover {
  background: var(--secondary, #22d3ee);
  transform: scale(1.1);
}

#backToTop svg {
  stroke: #fff; /* garante que o ícone fica visível no tema escuro */
}

/* ANIMAÇÕES */
.fade-section {
  opacity: 0;
  transform: translateY(30px);
  transition: all .6s ease-out;
}
.fade-section.show {
  opacity: 1;
  transform: translateY(0);
}

/* RESPONSIVIDADE */
@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-photo {
    margin-top: 2rem;
  }
  .nav {
    display: none;
  }
  .nav.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60px;
    right: 10px;
    background: rgba(0,0,0,0.9);
    padding: 1rem;
    border-radius: var(--radius);
  }
}


/* Header base (desktop) */
.site-header{
  display:flex; align-items:center; justify-content:space-between;
  padding: 0.8rem 5%;
  position:fixed; top:0; left:0; right:0; z-index:1000;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(10px);
}
.nav{
  display:flex; align-items:center; gap: 1rem;
}
.nav a{ color: var(--text); text-decoration:none; }
.menu-toggle, .theme-toggle{
  background:none; border:0; color: var(--text);
  font-size:1.25rem; cursor:pointer; margin-left:.6rem;
}

/* Mobile: esconde o menu, mostra hamburguer */
@media (max-width: 900px){
  .nav{
    position: absolute;
    top: 64px; /* altura do header */
    right: 5%;
    display: none;
    flex-direction: column;
    gap: .8rem;
    width: min(260px, 90vw);
    padding: 1rem;
    border-radius: var(--radius);
    background: rgba(0,0,0,0.9);
    box-shadow: var(--shadow);
    z-index: 1200;
  }
  .nav.active{ display:flex; }

  .menu-toggle{ display:inline-block; }
}

/* Desktop: some o hamburguer */
@media (min-width: 901px){
  .menu-toggle{ display:none; }
}