/* ===== VARIÁVEIS DA PALETA NORD ===== */
:root {
  --nord0: #2e3440;
  --nord1: #3b4252;
  --nord2: #434c5e;
  --nord3: #4c566a;
  --nord4: #d8dee9;
  --nord5: #e5e9f0;
  --nord6: #eceff4;
  --nord7: #8fbcbb;
  --nord8: #88c0d0;
  --nord9: #81a1c1;
  --nord10: #5e81ac;
  --nord11: #bf616a;
  --nord12: #d08770;
  --nord13: #ebcb8b;
  --nord14: #a3be8c;
  --nord15: #b48ead;
}

/* ===== LIGHT THEME ===== */
.light-theme {
  --nord0: #eceff4;
  --nord1: #e5e9f0;
  --nord2: #d8dee9;
  --nord3: #4c566a;
  --nord4: #434c5e;
  --nord5: #3b4252;
  --nord6: #2e3440;
  --nord7: #8fbcbb;
  --nord8: #5e81ac;
  --nord9: #81a1c1;
  --nord10: #5e81ac;
  --nord11: #bf616a;
  --nord12: #d08770;
  --nord13: #ebcb8b;
  --nord14: #a3be8c;
  --nord15: #b48ead;
}

/* ===== ANIMAÇÕES ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes bounceDown {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(6px);
  }
}

/* Classe controlada pelo IntersectionObserver */
.section-hidden {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

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

/* ===== ESTILOS GERAIS ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  font-family: "JetBrains Mono", monospace;
  transition:
    background-color 0.3s ease,
    color 0.3s ease,
    border-color 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--nord1);
  color: var(--nord4);
  line-height: 1.6;
  min-height: 100vh;
  margin: 0;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== HEADER ===== */
@keyframes headerBorderGlow {
  0%,
  100% {
    box-shadow:
      0 1px 0 0 var(--nord2),
      0 1px 8px 0 rgba(136, 192, 208, 0);
  }
  50% {
    box-shadow:
      0 1px 0 0 rgba(136, 192, 208, 0.5),
      0 1px 16px 0 rgba(136, 192, 208, 0.15);
  }
}

header {
  background-color: var(--nord0);
  padding: 0.6rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--nord2);
  transition: box-shadow 0.4s ease;
}

header:hover {
  animation: headerBorderGlow 2s ease-in-out infinite;
}

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

.logo {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  text-decoration: none;
}

.logo-main {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--nord6);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.logo-sub {
  font-size: 0.85rem;
  color: var(--nord8);
  font-weight: 300;
}

.logo-sub::before {
  content: "// ";
  color: var(--nord3);
}

nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 1.8rem;
  align-items: center;
}

nav a {
  color: var(--nord4);
  text-decoration: none;
  font-weight: 400;
  font-size: 0.95rem;
  position: relative;
  padding: 0.3rem 0;
  transition: color 0.25s ease;
}

nav a:hover {
  color: var(--nord8);
}

nav a::after {
  content: "";
  position: absolute;
  width: 0;
  height: 1px;
  bottom: 0;
  left: 0;
  background-color: var(--nord8);
  transition: width 0.25s ease;
}

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

nav a.active {
  color: var(--nord8);
}

/* Botão de Tema */
.theme-toggle {
  background: none;
  border: 1px solid var(--nord3);
  color: var(--nord4);
  cursor: pointer;
  font-size: 1rem;
  width: 36px;
  height: 36px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    border-color 0.25s ease,
    color 0.25s ease;
}

.theme-toggle:hover {
  border-color: var(--nord8);
  color: var(--nord8);
}

/* ===== MAIN ===== */
main {
  padding-bottom: 5rem;
}

/* ===== HERO SECTION ===== */
.hero {
  padding: 2.5rem 0 0;
  animation: fadeIn 0.8s ease both;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: center;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.hero-label {
  font-size: 0.8rem;
  color: var(--nord8);
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 500;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  color: var(--nord6);
  line-height: 1.1;
  margin: 0;
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--nord7);
  font-weight: 400;
  margin: 0;
}

.hero-subtitle::before {
  content: "$ ";
  color: var(--nord3);
}

.hero-description {
  font-size: 0.95rem;
  color: var(--nord5);
  max-width: 520px;
  line-height: 1.75;
  margin: 0;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease;
}

.btn-primary {
  background-color: var(--nord10);
  color: var(--nord6);
  border: 1px solid var(--nord10);
}

.btn-primary:hover {
  background-color: var(--nord9);
  border-color: var(--nord9);
}

.btn-outline {
  background-color: transparent;
  color: var(--nord4);
  border: 1px solid var(--nord3);
}

.btn-outline:hover {
  border-color: var(--nord8);
  color: var(--nord8);
}

.btn-sm {
  padding: 0.4rem 0.9rem;
  font-size: 0.8rem;
}

.hero-photo {
  width: 250px;
  height: 250px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--nord8);
  display: block;
  filter: grayscale(10%);
  transition:
    filter 0.3s ease,
    border-color 0.3s ease;
}

.hero-photo:hover {
  filter: grayscale(0%);
  border-color: var(--nord7);
}

.hero-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, var(--nord8), transparent);
  margin-top: 2.5rem;
  opacity: 0.4;
}

/* Divisor reutilizável entre seções */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, var(--nord8), transparent);
  opacity: 0.4;
  margin: 0;
}

/* ===== SKILLS SECTION ===== */
.skills-section {
  padding: 1.5rem 0 3rem;
}

.section-header {
  margin-bottom: 2rem;
}

.section-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--nord6);
  margin: 0 0 0.3rem;
  text-transform: lowercase;
  letter-spacing: 0.5px;
}

.section-title::before {
  content: "## ";
  color: var(--nord3);
  font-weight: 300;
}

.section-line {
  width: 40px;
  height: 2px;
  background-color: var(--nord8);
  border: none;
  margin: 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.skills-group h4 {
  color: var(--nord8);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 500;
  margin: 0 0 0.8rem;
}

.skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  background-color: var(--nord2);
  color: var(--nord4);
  font-size: 0.78rem;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  border: 1px solid var(--nord3);
  transition:
    border-color 0.2s ease,
    color 0.2s ease;
}

.skill-tag:hover {
  border-color: var(--nord8);
  color: var(--nord8);
}

/* ===== PROJETOS EM DESTAQUE (HOME) ===== */
.featured-section {
  padding: 1.5rem 0 2rem;
}

/* ===== PORTFOLIO CARDS ===== */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.portfolio-card {
  background-color: var(--nord0);
  border: 1px solid var(--nord2);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition:
    border-color 0.25s ease,
    box-shadow 0.25s ease;
  text-decoration: none;
}

.portfolio-card:hover {
  border-color: var(--nord8);
  box-shadow: 0 4px 20px rgba(136, 192, 208, 0.08);
}

.portfolio-card-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
  filter: brightness(0.9);
  transition: filter 0.3s ease;
}

.portfolio-card:hover .portfolio-card-image {
  filter: brightness(1);
}

.portfolio-card-body {
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  flex: 1;
}

.portfolio-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--nord6);
  margin: 0;
  line-height: 1.3;
}

.portfolio-card-description {
  font-size: 0.85rem;
  color: var(--nord5);
  margin: 0;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.portfolio-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
}

.tag {
  background-color: var(--nord2);
  color: var(--nord9);
  font-size: 0.72rem;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  font-weight: 500;
}

.portfolio-card-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  padding: 0 1.2rem 1.2rem;
  align-items: stretch;
}

/* Garante que todos os botões de ação do card tenham o mesmo tamanho */
.portfolio-card-actions .btn {
  flex: 1;
  justify-content: center;
}

/* ===== CONTATO SECTION (HOME) ===== */
.contact-section {
  padding: 1.5rem 0 3rem;
}

.contact-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 2rem;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--nord4);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid transparent;
  transition:
    color 0.2s ease,
    border-color 0.2s ease;
}

.contact-link:hover {
  color: var(--nord8);
  border-bottom-color: var(--nord8);
}

.contact-link i {
  font-size: 1.1rem;
  width: 1.2rem;
  text-align: center;
}

.contact-link svg {
  width: 1.1rem;
  height: 1.1rem;
  flex-shrink: 0;
}

/* Formulário de contato */
.contact-form {
  max-width: 560px;
}

.contact-form .form-group {
  margin-bottom: 1rem;
}

.contact-form label {
  display: block;
  font-size: 0.8rem;
  color: var(--nord5);
  margin-bottom: 0.4rem;
  letter-spacing: 0.5px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  background-color: var(--nord0);
  border: 1px solid var(--nord2);
  border-radius: 6px;
  color: var(--nord4);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.88rem;
  padding: 0.65rem 0.9rem;
  outline: none;
  transition: border-color 0.2s ease;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--nord8);
}

.contact-form textarea {
  min-height: 100px;
}

.contact-form .btn {
  margin-top: 0.5rem;
}

/* ===== PORTFOLIO PAGE HEADER ===== */
.page-header {
  padding: 3.5rem 0 2.5rem;
  border-bottom: 1px solid var(--nord2);
  margin-bottom: 2.5rem;
}

.page-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--nord6);
  margin: 0 0 0.5rem;
}

.page-title::before {
  content: "# ";
  color: var(--nord3);
  font-weight: 300;
}

.page-subtitle {
  color: var(--nord5);
  font-size: 0.95rem;
  margin: 0;
}

/* ===== FOOTER ===== */
footer {
  background-color: var(--nord0);
  border-top: 1px solid var(--nord2);
  padding: 2rem 0;
  text-align: center;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

.social-link {
  color: var(--nord3);
  font-size: 1.3rem;
  transition:
    color 0.2s ease,
    transform 0.2s ease;
  text-decoration: none;
}

.social-link:hover {
  color: var(--nord8);
  transform: translateY(-2px);
}

.copyright {
  color: var(--nord3);
  font-size: 0.8rem;
  margin: 0;
}

/* ===== ACESSIBILIDADE ===== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--nord8);
  outline-offset: 3px;
}

/* ===== RESPONSIVIDADE ===== */
@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .hero-photo {
    width: 160px;
    height: 160px;
    margin: 0 auto;
    order: -1;
  }

  .hero-description {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .contact-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  nav ul {
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .header-content {
    flex-direction: column;
    gap: 1rem;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== PÁGINAS INTERNAS DE PROJETO ===== */
.big-card {
  background-color: var(--nord0);
  border: 1px solid var(--nord2);
  border-radius: 8px;
  overflow: hidden;
  margin: 2rem auto;
  max-width: 900px;
}

.card-header {
  padding: 2.5rem 2.5rem 1.5rem;
  border-bottom: 1px solid var(--nord2);
}

.card-title {
  color: var(--nord6);
  font-size: 2rem;
  line-height: 1.2;
  margin-bottom: 0.8rem;
}

.card-subtitle {
  color: var(--nord5);
  font-size: 1.1rem;
  line-height: 1.5;
  margin-bottom: 0.8rem;
}

.card-date {
  color: var(--nord8);
  font-size: 0.9rem;
  font-weight: 400;
}

.card-content {
  padding: 2rem 2.5rem;
}

.card-text {
  color: var(--nord5);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 2rem;
}

.card-image {
  margin: 2rem 0;
  text-align: center;
}

.card-image img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
}

.image-caption {
  color: var(--nord4);
  font-size: 0.85rem;
  margin-top: 0.6rem;
  font-style: italic;
}

.card-footer {
  padding: 1.2rem 2.5rem;
  border-top: 1px solid var(--nord2);
}

.back-link {
  color: var(--nord8);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 0.2s ease;
}

.back-link:hover {
  color: var(--nord6);
}

@media (max-width: 768px) {
  .card-header,
  .card-content,
  .card-footer {
    padding: 1.5rem;
  }

  .card-title {
    font-size: 1.6rem;
  }
}