/* CSS Moderno e Otimizado para "Green Software" (Dark Themes consomem menos energia em telas OLED) */

/* ================== VARIABLES ================== */
:root {
  /* Colors */
  --bg-color: #0b1111;
  --bg-accent: #131c1c;
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  
  /* Green software / Neon vibes */
  --primary: #10b981; /* Emerald/Green */
  --primary-hover: #059669;
  --secondary: #3b82f6; /* Blue for contrast */

  /* Gradients */
  --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  
  /* Layout & Fonts */
  --max-width: 1100px;
  --font-mono: 'Fira Code', monospace;
  --font-sans: 'Inter', sans-serif;

  /* Glassmorphism */
  --glass-bg: rgba(19, 28, 28, 0.7);
  --glass-border: rgba(255, 255, 255, 0.05);
}

/* ================== RESETS/BASICS ================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

h1, h2, h3 {
  font-weight: 800;
  line-height: 1.2;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

ul {
  list-style: none;
}

/* Utility / Typographic Classes */
.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.accent {
  color: var(--primary);
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section {
  padding: 100px 0;
}

.section-header {
  margin-bottom: 50px;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Buttons */
.btn-primary, .btn-secondary, .social-btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--text-muted);
  color: var(--text-main);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ================== NAVBAR ================== */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 20px 0;
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 1000;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: var(--glass-bg);
  border-bottom: 1px solid var(--glass-border);
}

.navbar.scrolled {
  padding: 15px 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.logo-text {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-links li a {
  font-size: 0.95rem;
  font-weight: 600;
}

.nav-links li a:hover {
  color: var(--primary);
}

/* ================== HERO SECTION ================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 140px; /* Offset nav */
}

.hero-content {
  position: relative;
  z-index: 10;
}

.hero-text {
  max-width: 700px;
}

.tagline {
  font-family: var(--font-mono);
  color: var(--primary);
  margin-bottom: 20px;
  font-size: 1.1rem;
}

.main-title {
  font-size: clamp(3rem, 8vw, 5.5rem);
  margin-bottom: 10px;
}

.sub-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: var(--text-muted);
  margin-bottom: 30px;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 600px;
}

.hero-actions {
  display: flex;
  gap: 20px;
}

/* Decor shapes */
.bg-shape {
  position: absolute;
  filter: blur(100px);
  z-index: 1;
  opacity: 0.2;
}
.shape-1 {
  width: 400px;
  height: 400px;
  background: var(--primary);
  top: -100px;
  left: -100px;
  border-radius: 50%;
}
.shape-2 {
  width: 300px;
  height: 300px;
  background: var(--secondary);
  bottom: 10%;
  right: 5%;
  border-radius: 50%;
}

/* ================== ABOUT SECTION ================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 50px;
  align-items: center;
}

.about-text p {
  margin-bottom: 1.2rem;
  color: var(--text-muted);
}

.skills-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  margin-top: 30px;
}

.skills-list li {
  position: relative;
  padding-left: 20px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.skills-list li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--primary);
}

.green-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 40px;
  border-radius: 16px;
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
}

.green-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.green-card h3 {
  margin-bottom: 15px;
  font-size: 1.5rem;
}

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

/* ================== PROJECTS SECTION ================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
}

.project-card {
  background: var(--bg-accent);
  padding: 30px;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 30px rgba(16, 185, 129, 0.1);
}

.project-header {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--primary);
  background: rgba(16, 185, 129, 0.1);
  padding: 5px 10px;
  border-radius: 20px;
}

.project-card h3 {
  font-size: 1.4rem;
  margin-bottom: 15px;
}

.project-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 25px;
}

.project-link {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
}
.project-link:hover {
  text-decoration: underline;
}

/* ================== CONTACT ================== */
.contact-container {
  text-align: center;
  max-width: 600px;
}

.contact h2 {
  font-size: 3rem;
  margin-bottom: 20px;
}

.contact p {
  color: var(--text-muted);
  margin-bottom: 40px;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.social-btn {
  background: var(--bg-accent);
  border: 1px solid var(--glass-border);
}
.social-btn:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.mailto-text {
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.accent-link {
  color: var(--primary);
}

/* ================== FOOTER ================== */
footer {
  text-align: center;
  padding: 30px 0;
  border-top: 1px solid var(--glass-border);
  font-size: 0.9rem;
  color: var(--text-muted);
}
.small-text {
  font-size: 0.8rem;
  margin-top: 10px;
  opacity: 0.6;
}

/* ================== BADGES & METRICS ================== */
.hero-metrics {
  display: flex;
  gap: 15px;
  align-items: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.metric {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
  padding: 8px 15px;
  border-radius: 20px;
  border: 1px solid var(--glass-border);
}
.metric strong {
  color: var(--primary);
  font-size: 1rem;
}
.certifications-container {
  margin-top: 40px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 30px;
  backdrop-filter: blur(8px);
}
.certifications-container h3 {
  font-size: 1.5rem;
  margin-bottom: 25px;
  text-align: center;
}
.badges-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  justify-content: center;
}
.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 8px 16px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.3s ease;
}
.cert-badge:hover {
  background: rgba(16, 185, 129, 0.2);
  transform: translateY(-2px);
}

/* ================== MEDIA QUERIES ================== */
@media (max-width: 768px) {
  .nav-links {
    display: none; /* Em modo mobile simplificado, esconde links ou faz menu hamburger. Para simplicidade, vou escondê-los. */
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .skills-list {
    grid-template-columns: 1fr;
  }
  .main-title {
    font-size: 2.5rem;
  }
  .sub-title {
    font-size: 1.8rem;
  }
  .hero-actions {
    flex-direction: column;
  }
}