@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap');

:root {
  /* Paleta de cores dark mode */
  --background-primary: #121212;
  --background-secondary: #1E1E1E;
  --text-primary: #E0E0E0;
  --text-secondary: #FFFFFF;
  --accent-color: #9A48D6;
  --accent-color-hover: #7b2ab2;
  --border-color: #2a2a2a;
  --shadow-color: rgba(154, 72, 214, 0.25);
}

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

html {
  scroll-behavior: smooth;
}

body { 
  font-family: 'Poppins', sans-serif;
  line-height: 1.6;
  background: var(--background-primary);
  color: var(--text-primary);
  padding-top: 4.3rem; /* 70px */
  overflow-x: hidden;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

h1, h2, h3 {
  color: var(--text-secondary);
  font-weight: 600;
}

/* Header */
header {
  background: transparent;
  padding: 1rem 2rem;
  box-shadow: 0 2px 5px rgba(0,0,0,0.3);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(5px);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.navbar-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: bold;
  transition: color 0.3s ease;
}

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

.nav-links a.active {
  color: var(--accent-color);
  text-shadow: 0 0 5px var(--accent-color);
}

/* Hero section */
.hero {
  min-height: calc(100vh - 4.375rem);
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 2rem;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
}

.hero h1 span {
 color: var(--accent-color);
 text-shadow: 0 0 10px var(--shadow-color);
}

.btn {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.8rem 2rem;
  background: var(--accent-color);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.btn:hover {
  background: var(--accent-color-hover);
  transform: translateY(-3px);
}

/* Sections */
section {
  padding: 6rem 2rem;
}

section h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  position: relative;
}

section h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 3.75rem;
  height: 0.25rem;
  background-color: var(--accent-color);
  border-radius: 2px;
}

/* About section */ 
#about {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-content {
  max-width: 50rem; /* 800px */
  text-align: left;
}

.about-content p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
  text-align: left;
}


/* Habilidades section */ 
.skills{
  background-color: var(--background-primary);
}

.skills-subtitle {
  text-align: center;
  margin-top: 3rem;
  margin-bottom: -1rem;
  color: var(--text-primary);
  font-weight: 400;
}

.skills-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.skill-card {
  background-color: var(--background-secondary);
  border-radius: 12px;
  padding: 1.5rem 1rem;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px var(--shadow-color);
}

.skill-card img {
  width: 50px;
  height: 50px;
}

.skill-card p {
  font-weight: 600;
  color: var(--text-primary);
}
/* Project section */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(21.875rem, 1fr));
  gap: 1rem;
}

.project-card {
  background: var(--background-secondary);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  padding: 1.5rem;
  transition: transform 0.5s ease, box-shadow 0.5s ease;
  transition: background-color 0.4s ease, color 0.4s ease;
  display: flex;
  flex-direction: column;
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 25px var(--shadow-color); 
}

.project-card img {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 1rem;
  transition: transform 0.6s ease;
}

.project-card:hover img {
  transform: scale(1.05);
}

.project-card h3 {
  color: var(--accent-color);
  margin-bottom: 0.5rem;
  font-size: 1.5rem;
  text-shadow: 0 0 8px var(--shadow-color);
}

.project-card p {
  font-size: 1rem;
  color: var(--text-primary);
  flex-grow: 1;
}

.btn.btn-primary {
  border-radius: 8px;
  padding: 0.8rem 2rem;
  margin-top: 1.5rem;
  background: transparent;
  border: 2px solid var(--accent-color);
  color: var(--accent-color);
}

.btn.btn-primary:hover{
  background: var(--accent-color);
  color: var(--text-secondary);
}

.btn.btn-secondary {
  background: transparent;
  border: 2px solid var(--accent-color);
  color: var(--accent-color);
}

.btn.btn-secondary:hover{
  background: var(--accent-color);
  color: var(--text-secondary);
}

/* icons */
.tech-icons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin: 1.5rem 0;
}

.tech-icons i {
  font-size: 2.2rem;
  transition: transform 0.3s ease;
}

.fa-html5 { color: #E44D26;}
.fa-css3-alt { color: #1572B6;}
.fa-js { color: #F7DF1E;}
.fa-python { color: #306998;}

.tech-icons i:hover {
  transform: scale(1.2);
  filter: brightness(1.3);
}

/* Buttons project */
.buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

/* Contact Section */
.contact {
  text-align: center;
}

.contact-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  margin-top: 1rem;
}

.contact-links a i {
  font-size: 2.5rem;
  transition: color 0.3s ease, transform 0.3s ease;
}

.contact-links a:hover i {
  transform: scale(1.1);
}

.fa-linkedin { color: #0077b6; }
.fa-linkedin:hover { color: #0077b6; filter: brightness(1.3);}
.fa-github { color: #2a2a2a; }
.fa-github:hover { color: grey; filter: brightness(1.3);} 

/* Email */
.email-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2rem;
  justify-content: center;
  padding: 0.5rem 1rem;
  background-color: var(--background-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

#email-text {
  font-weight: 600;
  color: var(--text-primary);
}

#copy-button {
  cursor: pointer;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.2rem;
  transition: color 0.3s ease;
}

#copy-button:hover {
  background: var(--background-secondary);
}

#copy-feedback {
  margin-top: 1rem;
  color: #28a745;
  font-weight: 600;
}

.feedback-hidden {
  display: none;
}

/* Footer */
footer {
  background: var(--background-secondary);
  color: var(--text-primary);
  text-align: center;
  padding: 1.5rem;
  border-top: 1px solid var(--border-color);
}

/* animations */ 
.fade-in-element {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-element.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hamburger section */ 
.hamburger {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer; 
  padding: 0;
  z-index: 1001;
}

.hamburger .bar{ 
  display: block;
  width: 25px;
  height: 3px;
  margin: 5px auto;
  background: var(--text-primary);
  transition: all 0.3s ease-in-out;
}

/* botao de voltar a pagina */
#back-to-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--background-secondary);
  color: var(--text-secondary);
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(100%);
  transition: opacity 0.4s ease, visibility 0.4s ease, transform 0.4s ease;
  z-index: 999;
}

#back-to-top-btn.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top-btn:hover{
  background-color: var(--accent-color-hover);
  box-shadow: 0 6px 20px rgba(154, 72, 214, 0.4);
}


/* Área de temas */

body, header, .skill-card, footer, .btn, .btn-outline {
  transition: background-color 0.4s ease, color 0.4s ease;
}

body.light-theme {
 --background-primary: #F5F5F5;
  --background-secondary: #FFFFFF;
  --text-primary: #2c2c2c;
  --text-secondary: #121212;
  --border-color: #e0e0e0;
  --accent-color: #007BFF;
  --accent-color-hover: #0056b3;
  --shadow-color: rgba(0, 123, 255, 0.2);
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);   
  font-size: 1.25rem;
  margin-right: 1.5rem;
  padding: 0.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.3s ease, transform 0.3s ease;
}

.theme-toggle:hover {
  color: var(--accent-color);
  transform: scale(1.1);
}

.theme-toggle.fas-rotating {
  transform: rotate(-360deg);
  transition: transform 0.5s ease-in-out;
}

.theme-icon-sun {
  display: none;
}

body.light-theme .theme-icon-moon {
  display: block;
}

body.light-theme header {
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(5px);
}

/* Área do Responsivo */ 
@media screen and (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  header {
    background: transparent;
  padding: 0;
  width: 100%;
  top: 0;
  z-index: 1000;
  border-bottom: 0px solid var(--border-color);
  }

  section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
  }

  section {
    padding: 4rem 1rem;
  }

  .buttons {
    flex-direction: column;
    gap: 0.5rem;
  }

  .project-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  /* arrumando os cards */ 
  .project-card {
    padding: 1rem;
  }

  .project-card h3 {
    font-size: 1.25rem;
  }

  .project-card p {
    font-size: 0.9rem;
  }

  .tech-icons {
    margin: 1rem 0;
  }

  .tech-icons i {
    font-size: 1.8rem;
  }

  .button {
    margin-top: 1rem;
  }

  /* Menu hamburger */ 
  .hamburger {
    display: block;
    position: fixed;
    top: 0.2rem;
    right: 2rem;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(30, 30, 30, 0.98);
    backdrop-filter: blur(5px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }

  .nav-links.is-active {
    display: flex;
  }

  .nav-links li {
    padding: 1rem 0;
  }

  .nav-links a{
     font-size: 1.5rem;
  }

  .hamburger.is-active .bar:nth-child(2){ 
    opacity: 0;
  }

  .hamburger.is-active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg); 
  }
  .hamburger.is-active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg); 
  }
}