/* ==============================================================================
   FOLHA DE ESTILO PREMIUM - LUIZMENDES.COM.BR
   Tema: Deep Space / Cyber-Security & Artificial Intelligence
   Fontes: Space Grotesk (Títulos) & Inter (Leitura)
   ============================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* --- VARIÁVEIS DO SISTEMA DE DESIGN (TOKENS) --- */
:root {
  /* Cores Temáticas HSL */
  --bg-deep: hsl(240, 30%, 4%);       /* Fundo cósmico super escuro */
  --bg-card: hsla(240, 25%, 8%, 0.65); /* Card semi-transparente (glassmorphism) */
  --border-glass: hsla(240, 30%, 20%, 0.4);
  --border-glow: hsla(270, 70%, 55%, 0.45);
  
  --primary: hsl(270, 85%, 60%);      /* Roxo Cósmico */
  --primary-glow: hsla(270, 85%, 60%, 0.5);
  --secondary: hsl(190, 100%, 45%);   /* Ciano AI/Tech */
  --secondary-glow: hsla(190, 100%, 45%, 0.5);
  --cyber-yellow: hsl(45, 100%, 50%);  /* Alerta/Cybersegurança */
  
  --text-primary: hsl(0, 0%, 96%);
  --text-muted: hsl(220, 12%, 70%);
  --text-dark: hsl(240, 10%, 15%);
  
  /* Fontes */
  --font-title: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Efeitos e Transições */
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease;
  --blur-glass: blur(16px);
  --shadow-neon: 0 0 20px var(--primary-glow);
}

/* --- RESET & ESTRUTURA GERAL --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

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

/* --- CANVA DE FUNDO FIXO --- */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none; /* Mantém os links e botões clicáveis */
  background: radial-gradient(circle at 50% 50%, hsl(240, 25%, 7%) 0%, var(--bg-deep) 100%);
}

/* --- SCROLLBAR CUSTOMIZADO --- */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-deep);
}
::-webkit-scrollbar-thumb {
  background: hsla(270, 70%, 40%, 0.3);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* --- COMPONENTES UTILS --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.text-gradient {
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--primary) 70%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-cyan {
  background: linear-gradient(135deg, var(--text-primary) 20%, var(--secondary) 75%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- BOTÕES PREMIUM --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 600;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), hsl(280, 80%, 50%));
  color: var(--text-primary);
  border: 1px solid hsla(0, 0%, 100%, 0.15);
  box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px var(--primary-glow), 0 0 10px var(--secondary-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  backdrop-filter: var(--blur-glass);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--secondary);
  color: var(--secondary);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px var(--secondary-glow);
}

/* --- GLASS CARD --- */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  backdrop-filter: var(--blur-glass);
  padding: 2.5rem;
  transition: var(--transition-smooth);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.glass-card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 15px 40px rgba(110, 68, 255, 0.15), 0 0 15px rgba(0, 240, 255, 0.05);
  transform: translateY(-5px);
}

/* --- HEADER / NAVEGAÇÃO --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: hsla(240, 30%, 4%, 0.6);
  backdrop-filter: var(--blur-glass);
  border-bottom: 1px solid var(--border-glass);
  transition: var(--transition-smooth);
}

.site-header.scrolled {
  background: hsla(240, 30%, 4%, 0.9);
  padding: 0.5rem 0;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
}

.logo {
  font-family: var(--font-title);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  border: 1px solid var(--border-glass);
  padding: 0.45rem 1.25rem;
  border-radius: 50px;
  box-shadow: 0 4px 15px rgba(0, 240, 255, 0.05);
  transition: var(--transition-smooth);
}

.logo i {
  -webkit-text-fill-color: var(--secondary) !important;
  color: var(--secondary) !important;
}

.logo:hover {
  border-color: var(--secondary);
  box-shadow: 0 0 15px var(--secondary-glow);
  transform: translateY(-1px) scale(1.03);
}

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

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-family: var(--font-title);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-fast);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: var(--transition-smooth);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  cursor: pointer;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
}

/* --- HERO SECTION --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 100px;
  overflow: hidden;
}

.hero-content {
  max-width: 750px;
}

.badge-ia {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: hsla(190, 100%, 45%, 0.1);
  border: 1px solid var(--secondary);
  color: var(--secondary);
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  font-family: var(--font-title);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 2rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 0 0 10px var(--secondary-glow);
}

.badge-ia i {
  animation: pulse 2s infinite;
}

.hero-title {
  font-family: var(--font-title);
  font-size: 4.5rem;
  line-height: 1.1;
  font-weight: 700;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.hero-buttons {
  display: flex;
  gap: 1.5rem;
}

/* --- SEÇÃO SOBRE --- */
.section {
  padding: 8rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 5rem;
}

.section-tag {
  color: var(--primary);
  text-transform: uppercase;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 2px;
  display: block;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-title);
  font-size: 2.75rem;
  font-weight: 700;
  line-height: 1.2;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.about-text p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.metric-card {
  text-align: center;
  border-top: 2px solid var(--primary);
  padding-top: 1.5rem;
}

.metric-num {
  font-family: var(--font-title);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  display: block;
}

.metric-label {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.about-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.shield-cyber {
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: radial-gradient(circle, hsla(270, 70%, 55%, 0.1) 0%, transparent 70%);
  border: 1px dashed var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  animation: spin 30s linear infinite;
}

.shield-inner {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: spin-reverse 15s linear infinite;
}

.shield-icon {
  font-size: 4rem;
  color: var(--secondary);
  animation: float 4s ease-in-out infinite;
}

/* --- ORBIT / SKILLS SECTION --- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.skill-card {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.skill-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  background: linear-gradient(135deg, hsla(270, 70%, 55%, 0.15), hsla(190, 100%, 45%, 0.15));
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--secondary);
  transition: var(--transition-smooth);
}

.skill-card:hover .skill-icon-wrapper {
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 5px 15px var(--primary-glow);
  transform: scale(1.05);
}

.skill-title {
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 600;
}

.skill-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.tag {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: var(--transition-fast);
}

.tag:hover {
  background: hsla(270, 70%, 55%, 0.08);
  border-color: var(--primary);
  color: var(--text-primary);
}

/* --- PORTFÓLIO / CARDS BRILHANTES --- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 2.5rem;
}

.project-card {
  position: relative;
  overflow: hidden;
}

.project-tag {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: hsla(240, 30%, 4%, 0.8);
  border: 1px solid var(--border-glass);
  padding: 0.35rem 1rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.project-card .project-tag.tech-ia {
  border-color: var(--secondary);
  color: var(--secondary);
}

.project-card .project-tag.tech-security {
  border-color: var(--cyber-yellow);
  color: var(--cyber-yellow);
}

.project-title {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.project-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--secondary);
  text-decoration: none;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.project-link:hover {
  gap: 0.85rem;
  color: var(--text-primary);
}

/* --- CONTATO E GLOW EFFECTS --- */
.contact-container {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 4rem;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.contact-item {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.contact-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--secondary);
}

.contact-details h4 {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.contact-details p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-label {
  font-family: var(--font-title);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-input {
  width: 100%;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  padding: 1rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-smooth);
}

.form-input:focus {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--secondary);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
}

textarea.form-input {
  min-height: 150px;
  resize: vertical;
}

.contact-form .btn {
  grid-column: span 2;
  justify-content: center;
}

/* --- FOOTER --- */
.site-footer {
  border-top: 1px solid var(--border-glass);
  background: hsla(240, 30%, 4%, 0.8);
  padding: 1.2rem 0;
  position: relative;
  z-index: 10;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-col-left {
  flex: 1;
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.footer-col-center {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.footer-col-right {
  flex: 1;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.footer-logo {
  font-family: var(--font-title);
  font-size: 1.75rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-primary);
  display: inline-block;
}

.footer-logo span {
  color: var(--secondary);
}

.footer-socials {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 0;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 1.1rem;
  transition: var(--transition-fast);
}

.social-link:hover {
  background: var(--primary);
  color: var(--text-primary);
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-neon);
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
  text-align: right;
}

@media (max-width: 768px) {
  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }
  
  .footer-col-left, .footer-col-center, .footer-col-right {
    flex: none;
    justify-content: center;
    width: 100%;
  }
  
  .footer-copy {
    text-align: center;
  }
}

/* --- ANIMAÇÕES KEYFRAMES --- */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes spin-reverse {
  from { transform: rotate(360deg); }
  to { transform: rotate(0deg); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.1); }
}

/* --- MEDIA QUERIES (RESPONSIVIDADE) --- */
@media (max-width: 992px) {
  .hero-title {
    font-size: 3.5rem;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .about-visual {
    order: -1;
  }
  
  .contact-container {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none; /* Poderá ser implementado um toggle via js */
  }
  
  .hamburger {
    display: block;
  }
  
  .hero-title {
    font-size: 2.75rem;
  }
  
  .hero-buttons {
    flex-direction: column;
  }
  
  .section-title {
    font-size: 2.25rem;
  }
  
  .metrics-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .contact-form {
    grid-template-columns: 1fr;
  }
  
  .form-group.full-width {
    grid-column: span 1;
  }
  
  .contact-form .btn {
    grid-column: span 1;
  }
}