:root {
  /* Paleta de Cores */
  --gray-light-default: #ffffff;
  --gray-light-50: #f9fafb;
  --gray-light-100: #f3f4f6;
  --gray-light-200: #e5e7eb;
  --gray-light-300: #d1d5db;
  --gray-light-400: #9ca3af;
  --gray-light-500: #6b7280;
  --gray-light-600: #4b5563;
  --gray-light-700: #374151;
  --gray-light-800: #1f2937;
  --gray-light-900: #111827;
  --gray-light-950: #030712;

  --gray-dark-default: #030712;
  --gray-dark-50: #111827;
  --gray-dark-100: #1f2937;
  --gray-dark-200: #374151;
  --gray-dark-300: #4b5563;
  --gray-dark-400: #6b7280;
  --gray-dark-500: #9ca3af;
  --gray-dark-600: #d1d5db;
  --gray-dark-700: #e5e7eb;
  --gray-dark-800: #f3f4f6;
  --gray-dark-900: #f9fafb;
  --gray-dark-950: #ffffff;

  --font-family-sans: "Inter", sans-serif;

  /* Padrão: Tema Escuro */
  --background: var(--gray-dark-default);
  --background-secondary: var(--gray-dark-50);
  --text-logo: var(--gray-dark-900);
  --text-heading: var(--gray-dark-900);
  --text-body: var(--gray-dark-600);
  --text-link: var(--gray-dark-600);
  --text-link-hover: var(--gray-dark-900);
  --divider-color: var(--gray-dark-100);
  --button-background: var(--gray-dark-900);
  --button-text: var(--gray-dark-50);
  --button-hover-background: var(--gray-dark-600);
  --icon-color: var(--gray-dark-600);
  --icon-color-hover: var(--gray-dark-900);
  --tag-background: var(--gray-dark-200);
  --tag-text: var(--gray-dark-600);
  --card-background: var(--gray-dark-100);
  --card-image-bg: var(--gray-dark-200);
  --card-border: var(--gray-dark-100);

  --shadow-sm: 0px 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0px 4px 8px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0px 10px 15px -3px rgba(0, 0, 0, 0.1),
    0px 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0px 20px 25px -5px rgba(0, 0, 0, 0.1),
    0px 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.light-theme {
  --background: var(--gray-light-default);
  --background-secondary: var(--gray-light-50);
  --text-logo: var(--gray-light-900);
  --text-heading: var(--gray-light-900);
  --text-body: var(--gray-light-600);
  --text-link: var(--gray-light-500);
  --text-link-hover: var(--gray-light-900);
  --divider-color: var(--gray-light-200);
  --button-background: var(--gray-light-900);
  --button-text: var(--gray-light-50);
  --button-hover-background: var(--gray-light-600);
  --icon-color: var(--gray-light-500);
  --icon-color-hover: var(--gray-light-900);
  --tag-background: var(--gray-light-200);
  --tag-text: var(--gray-light-600);
  --card-background: var(--gray-light-default);
  --card-image-bg: var(--gray-light-50);
  --card-border: var(--gray-light-100);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--background);
  font-family: var(--font-family-sans);
  transition: background-color 0.3s ease;
}

.fade-in-section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Header e Navbar */
.header {
  width: 100%;
  padding: 16px 80px;
  background-color: var(--background);
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s ease;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
}

.logo {
  color: var(--text-logo);
  font-size: 30px;
  font-weight: 700;
  line-height: 36px;
  text-decoration: none;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  color: var(--text-link);
  font-size: 16px;
  font-weight: 500;
  line-height: 24px;
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.divider {
  width: 1px;
  height: 24px;
  background-color: var(--divider-color);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.theme-toggle {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 6px;
  background: none;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  color: var(--icon-color);
  transition: color 0.3s ease;
}

.theme-toggle:hover {
  color: var(--icon-color-hover);
}

.icon-sun {
  display: none;
}
.light-theme .icon-sun {
  display: block;
}
.light-theme .icon-moon {
  display: none;
}

/* Componentes Gerais */
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 6px 16px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 500;
  line-height: 24px;
  text-decoration: none;
  cursor: pointer;
  border: none;
}

.button-primary {
  background-color: var(--button-background);
  color: var(--button-text);
  transition: background-color 0.3s ease;
}

.button-primary:hover {
  background-color: var(--button-hover-background);
}

.section-tag {
  padding: 4px 20px;
  background-color: var(--tag-background);
  color: var(--tag-text);
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Seção Hero */
.hero-section {
  width: 100%;
  padding: 96px 80px;
  background-color: var(--background);
}

.hero-content {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 48px;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: 48px;
  max-width: 768px;
}

.hero-title h1 {
  color: var(--text-logo);
  font-size: 60px;
  font-weight: 700;
  line-height: 72px;
  margin-bottom: 8px;
}

.hero-title .subtitle {
  color: var(--text-link);
  font-size: 20px;
  font-weight: 400;
  line-height: 28px;
}

.hero-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-link);
  font-size: 16px;
}

.info-item svg {
  color: var(--text-link);
}

.status-dot {
  margin-left: 3.5px;
  margin-right: 4.5px;
  width: 8px;
  height: 8px;
  background-color: #10b981;
  border-radius: 50%;
}

.hero-socials {
  display: flex;
  gap: 4px;
}

.social-link {
  display: inline-flex;
  padding: 6px;
  color: var(--icon-color);
  border-radius: 8px;
  transition: color 0.3s ease, background-color 0.3s ease;
}

.social-link svg {
  width: 24px;
  height: 24px;
}

.social-link:hover {
  color: var(--icon-color-hover);
  background-color: var(--divider-color);
}

.hero-image-wrapper {
  display: grid;
  place-items: center;
  width: 280px;
  aspect-ratio: 280 / 320;
  flex-shrink: 0;
}

.hero-image-bg,
.hero-image {
  grid-column: 1 / -1;
  grid-row: 1 / -1;
  width: 100%;
  height: 100%;
  border: 8px solid var(--background);
}

.hero-image-bg {
  background-color: var(--divider-color);
  transform: translate(20px, 20px);
  transition: background-color 0.3s ease, transform 0.3s ease;
  z-index: 1;
}

.hero-image {
  object-fit: cover;
  z-index: 2;
}

@media (max-width: 1024px) {
  .hero-content {
    flex-direction: column-reverse;
    text-align: center;
    gap: 32px;
  }

  .hero-text {
    align-items: center;
  }

  .info-item {
    justify-content: center;
  }

  .hero-title h1 {
    font-size: 48px;
    line-height: 56px;
  }
}

@media (max-width: 768px) {
  .hero-section {
    padding: 64px 24px;
  }

  .hero-image-wrapper {
    width: 80%;
    max-width: 280px;
  }

  .hero-image-bg {
    transform: translate(15px, 15px);
  }

  .hero-title h1 {
    font-size: 36px;
    line-height: 44px;
  }
  .hero-title .subtitle {
    font-size: 18px;
    line-height: 26px;
  }
}

/* Seção Sobre */
.about-section {
  width: 100%;
  padding: 96px 80px;
  background-color: var(--background-secondary);
  transition: background-color 0.3s ease;
}

.about-content {
  max-width: 1216px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
}

.about-text {
  max-width: 800px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.about-text h2 {
  color: var(--text-heading);
  font-size: 30px;
  font-weight: 600;
  line-height: 36px;
}

.about-text p {
  color: var(--text-body);
  font-size: 16px;
  line-height: 24px;
}

@media (max-width: 768px) {
  .about-section {
    padding: 64px 24px;
  }
  .about-text h2 {
    font-size: 24px;
    line-height: 32px;
  }
}

/* Seção Habilidades */
.skills-section {
  width: 100%;
  padding: 96px 80px;
  background-color: var(--background);
  transition: background-color 0.3s ease;
}

.skills-content {
  max-width: 1024px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
}

.skills-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.skills-header p {
  color: var(--text-body);
  font-size: 20px;
  line-height: 28px;
  max-width: 576px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 48px;
  list-style: none;
  padding: 0;
  width: 100%;
}

.skill-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
}

.skill-icon {
  width: 64px;
  height: 64px;
  object-fit: contain;
}

.skill-name {
  color: var(--text-body);
  font-size: 18px;
  line-height: 28px;
}

@media (max-width: 1024px) {
  .skills-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 768px) {
  .skills-section {
    padding: 64px 24px;
  }
  .skills-header p {
    font-size: 18px;
  }
  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Seção Projetos */
.projects-section {
  width: 100%;
  padding: 96px 80px;
  background-color: var(--background-secondary);
  transition: background-color 0.3s ease;
}

.projects-content {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
}

.projects-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.projects-header p {
  color: var(--text-body);
  font-size: 20px;
  line-height: 28px;
  max-width: 576px;
}

.projects-list {
  display: flex;
  flex-direction: column;
  gap: 48px;
  width: 100%;
}

.project-card {
  display: flex;
  background-color: var(--card-background);
  border-radius: 12px;
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  transition: background-color 0.3s ease;
}

.project-card--reversed {
  flex-direction: row-reverse;
}

.project-image-wrapper {
  flex: 1;
  padding: 48px;
  background-color: var(--card-image-bg);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color 0.3s ease;
}

.project-image-wrapper img {
  width: 100%;
  height: auto;
  max-height: 384px;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
}

.project-details {
  flex: 1;
  padding: 48px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
}

.project-title {
  color: var(--text-heading);
  font-size: 20px;
  font-weight: 600;
}

.project-description {
  color: var(--text-body);
  font-size: 16px;
  line-height: 24px;
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
}

.tech-tag {
  padding: 4px 20px;
  background-color: var(--tag-background);
  color: var(--tag-text);
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
}

.external-link {
  color: var(--icon-color);
  transition: color 0.3s ease;
}

.external-link:hover {
  color: var(--icon-color-hover);
}

@media (max-width: 1024px) {
  .project-card,
  .project-card--reversed {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .projects-section {
    padding: 64px 24px;
  }
  .project-details,
  .project-image-wrapper {
    padding: 32px;
  }
  .projects-header p {
    font-size: 18px;
  }
}

/* Seção Certificados */
.certificates-section {
  width: 100%;
  padding: 96px 80px;
  background-color: var(--background);
  transition: background-color 0.3s ease;
}

.certificates-content {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
}

.certificates-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 48px;
  width: 100%;
}

.certificate-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  padding: 32px;
  background-color: var(--card-background);
  border-radius: 12px;
  box-shadow: var(--shadow-xl);
  text-align: center;
  flex: 1 1 300px;
  max-width: 384px;
  transition: background-color 0.3s ease;
}

.certificate-badge {
  max-width: 100%;
  max-height: 220px;
  width: auto;
  height: auto;
  object-fit: cover;
  border-radius: 8px;
}

.certificate-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-grow: 1;
  justify-content: center;
}

.certificate-card h3 {
  color: var(--text-heading);
  font-size: 20px;
  font-weight: 600;
  line-height: 28px;
}

.certificate-card .certificate-issuer {
  color: var(--text-body);
  font-size: 14px;
  line-height: 20px;
}

.certificate-card--placeholder {
  background-color: var(--background);
  border: 1px dashed var(--divider-color);
  box-shadow: none;
  justify-content: center;
  gap: 24px;
  padding: 48px 32px;
}

.certificate-card--placeholder .certificate-info {
  flex-grow: 0;
}

.light-theme .certificate-card--placeholder {
  background-color: var(--gray-light-100);
}

.certificate-card--placeholder .certificate-info {
  align-items: center;
  text-align: center;
}

.certificate-card--placeholder h3 {
  color: var(--text-heading);
  margin-bottom: 8px;
}

.certificate-card--placeholder .certificate-issuer {
  color: var(--text-body);
}

.placeholder-icon-wrapper {
  background-color: var(--gray-dark-200);
  border-radius: 50%;
  padding: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.light-theme .placeholder-icon-wrapper {
  background-color: var(--gray-light-300);
}

.placeholder-icon-wrapper svg {
  color: var(--gray-dark-500);
  width: 48px;
  height: 48px;
}

.light-theme .placeholder-icon-wrapper svg {
  color: var(--gray-light-900);
}

@media (max-width: 768px) {
  .certificates-section {
    padding: 64px 24px;
  }
}

/* Seção Contato */
.contact-section {
  width: 100%;
  padding: 96px 80px;
  background-color: var(--background-secondary);
  transition: background-color 0.3s ease;
}

.contact-content {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
}

.contact-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.contact-header p {
  color: var(--text-body);
  font-size: 20px;
  line-height: 28px;
  max-width: 576px;
}

.contact-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.contact-item {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 20px;
}

.contact-item svg {
  color: var(--icon-color);
  flex-shrink: 0;
}

.contact-item a {
  color: var(--text-heading);
  font-size: 26px;
  font-weight: 600;
  line-height: 40px;
  word-break: break-all;
  text-decoration: none;
  transition: color 0.3s ease;
}

.contact-item a:hover {
  color: var(--text-link-hover);
}

.copy-button {
  display: inline-flex;
  padding: 6px;
  background: none;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  color: var(--icon-color);
  transition: color 0.3s ease;
}

.copy-button:hover {
  color: var(--icon-color-hover);
}

.copy-button .icon-check {
  display: none;
}

.copy-button.copied .icon-copy {
  display: none;
}

.copy-button.copied .icon-check {
  display: block;
  color: #10b981;
}

.contact-socials {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  margin-top: 16px;
}

.contact-socials p {
  color: var(--text-body);
  font-size: 16px;
}

@media (max-width: 768px) {
  .contact-section {
    padding: 64px 24px;
  }
  .contact-header p {
    font-size: 18px;
  }
  .contact-item a {
    font-size: 24px;
    line-height: 32px;
  }
  .contact-item svg {
    width: 24px;
    height: 24px;
  }
}

@media (max-width: 480px) {
  .contact-item a {
    font-size: 14px;
    line-height: 28px;
  }
  .contact-item svg {
    width: 24px;
    height: 24px;
  }
}

/* Rodapé */
.footer {
  width: 100%;
  padding: 24px 80px;
  background-color: var(--background);
  transition: background-color 0.3s ease;
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 16px;
}

.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px 24px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.copyright-text {
  color: var(--text-body);
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.copyright-text .heart {
  color: #ef4444;
}

@media (max-width: 768px) {
  .footer {
    padding: 24px;
  }
  .copyright-text {
    flex-wrap: wrap;
    justify-content: center;
    text-align: center;
    gap: 4px 8px;
  }
}

/* Botão "Voltar ao Topo" */
.back-to-top-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 100;

  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--button-background);
  color: var(--button-text);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-md);

  display: flex;
  justify-content: center;
  align-items: center;

  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
}

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

.back-to-top-btn:hover {
  background-color: var(--button-hover-background);
}

/* Menu Mobile */

.hamburger-menu {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  color: var(--icon-color);
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 400px;
  height: 100%;
  background-color: var(--background);
  z-index: 200;
  display: flex;
  flex-direction: column;
  padding: 16px 24px;
  transform: translateX(100%);
  transition: transform 0.3s ease-in-out;
  border-left: 1px solid var(--divider-color);
}

body.mobile-menu-open .mobile-menu {
  transform: translateX(0);
}

body.mobile-menu-open {
  overflow: hidden;
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--divider-color);
}

.close-menu-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--icon-color);
}

.mobile-nav-links {
  list-style: none;
  padding: 24px 0;
  flex-grow: 1;
}

.mobile-nav-links .nav-link {
  display: block;
  padding: 12px 0;
  font-size: 20px;
  color: var(--text-heading);
}

.mobile-menu-footer {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--divider-color);
}

.theme-toggle-mobile {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 18px;
  color: var(--text-body);
  padding: 8px 0;
}

.theme-toggle-mobile .theme-icons {
  color: var(--icon-color);
}

.mobile-menu-footer .button {
  width: 100%;
  text-align: center;
}

@media (max-width: 916px) {
  .header {
    padding: 16px 24px;
  }

  .logo {
    font-size: 24px;
  }

  .desktop-nav {
    display: none;
  }
  .hamburger-menu {
    display: block;
  }
}