/* =========================
   Variáveis de tema/spacing
   ========================= */
:root {
  /* Cores */
  --c-accent: #ff4b2b;
  --c-bg: #121212;
  --c-text: #fff;
  --c-secondary: #323232;
  --c-muted: #ccc;
  --c-muted-2: #aaa;
  --c-overlay: rgba(255, 150, 0, 0.7);
  --c-border: #333;
  --c-panel: #1f1f1f;

  /* Raio */
  --radius: 4px;

  /* Espaçamentos (gaps) */
  --gap-xs: 8px;
  --gap-sm: 10px;
  --gap-md: 15px;
  --gap-20: 20px;
  --gap-lg: 30px;
  --gap-xl: 40px;
  --gap-2xl: 50px;

  /* Paddings */
  --pad-btn-y: 12px;
  --pad-btn-x: 24px;
  --pad-chip-y: 5px;
  --pad-chip-x: 10px;
  --pad-input: 12px 15px;
  --pad-section-y: 60px;
  --pad-section-x: 20px;

  /* Layout */
  --container-w: 90%;
  --container-max: 1400px;
}

/* =========================
   Reset & base
   ========================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Poppins", sans-serif;
  background: linear-gradient(135deg, #181818 0%, #1a1a1a 100%);
  color: var(--c-text);
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;

  &::before,
  &::after {
    content: "";
    position: fixed;
    background-size: contain;
    background-repeat: no-repeat;
    opacity: 0.1;
    z-index: -1;
  }
  &::before {
    bottom: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background-image: url("assets/code-pattern.svg");
  }
  &::after {
    top: 20%;
    left: 80%;
    width: 200px;
    height: 200px;
    background-image: url("assets/programming-doodle.svg");
  }
}

.container {
  width: var(--container-w);
  max-width: var(--container-max);
  margin: 0 auto;
}

/* Linha temporal + botão voltar topo */
#timeline {
  position: fixed;
  left: 10px;
  top: 50%;
  transform: translateY(-45%);
  width: 4px;
  height: 80vh;
  background: rgba(255, 255, 255, 0.2);
  z-index: 1000;

  &-fill {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 0%;
    background: var(--c-accent);
    transition: height 0.2s ease-out;
  }
}

#back-to-top {
  position: fixed;
  left: calc(10px + 4px + 10px);
  bottom: 15vh;
  background: transparent;
  border: none;
  font-size: 2rem;
  color: var(--c-accent);
  cursor: pointer;
  z-index: 1000;
  animation: bounce-up 2s infinite;
}

/* =========================
   Header / navegação
   ========================= */
header {
  background-color: var(--c-bg);
  position: sticky;
  top: 0;
  z-index: 999;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.5);

  .header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;

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

    .hamburger-menu {
      display: none;
      background: none;
      border: none;
      font-size: 1.4rem;
      color: var(--c-text);
      cursor: pointer;

      i {
        pointer-events: none;
      }
    }

    .nav-menu {
      ul {
        list-style: none;
        display: flex;
        gap: 1.5rem;
      }
      a {
        text-decoration: none;
        color: var(--c-muted);
        font-size: 1.125rem;
        transition: color 0.3s;

        &:hover,
        &.active {
          color: var(--c-accent);
        }
      }
    }

    #language-toggle {
      background: transparent;
      border: 2px solid var(--c-accent);
      color: var(--c-accent);
      padding: 5px 10px;
      border-radius: var(--radius);
      cursor: pointer;
      font-weight: 500;
      transition: background 0.3s, color 0.3s;

      &:hover {
        background: var(--c-accent);
        color: #fff;
      }
    }
  }
}

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

section {
  animation: fadeInUp 1.4s ease-out;
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero {
  min-height: calc(100vh - 70px);
  background-color: rgba(24, 24, 24, 0.8);

  .hero-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--gap-xl);
    padding: var(--pad-section-y) var(--pad-section-x);
    width: 100%;

    .hero-text {
      flex: 1 1 400px;
      max-width: 600px;

      h1 {
        font-size: 3.5rem;
      }
      h2 {
        font-size: 2.5rem;
      }
      h3 {
        margin-top: var(--gap-sm);
        font-size: 1.75rem;
        color: var(--c-muted);
      }

      .hero-buttons {
        margin-top: var(--gap-20);
        display: flex;
        gap: var(--gap-md);
      }

      .tech-stack {
        margin-top: var(--gap-xl);
        display: flex;
        flex-wrap: wrap;
        gap: 1rem;
        color: #bbb;
        font-size: 1rem;
      }
    }

    .hero-image {
      flex: 1 1 300px;
      position: relative;
      display: flex;
      justify-content: center;
      align-items: center;

      img {
        width: 295px;
        border-radius: 50%;
        z-index: 2;
      }
      .circle-bg {
        position: absolute;
        width: 300px;
        height: 300px;
        background: rgba(255, 75, 43, 0.1);
        border: 2px solid var(--c-accent);
        border-radius: 50%;
        z-index: 1;
      }
    }
  }
}

/* Botões genéricos */
.btn,
button.btn {
  text-decoration: none;
  padding: var(--pad-btn-y) var(--pad-btn-x);
  border-radius: var(--radius);
  font-weight: 500;
  display: inline-block;
  transition: background 0.3s, transform 0.3s;

  &.primary-btn {
    background-color: var(--c-accent);
    color: #fff;
  }
  &.secondary-btn {
    border: 2px solid var(--c-accent);
    background: transparent;
    color: var(--c-accent);
  }

  &:hover {
    transform: scale(1.05);
  }
  &.primary-btn:hover,
  button.btn:hover {
    background-color: #e03c1b;
  }
  &.secondary-btn:hover {
    background: var(--c-accent);
    color: #fff;
  }
}

/* =========================
   Sobre
   ========================= */
.about {
  background-color: rgba(31, 31, 31, 0.9);
  padding: var(--pad-section-y) var(--pad-section-x);

  .about-content {
    display: flex;
    justify-content: center;
    width: 100%;
  }

  .about-text {
    max-width: 700px;
    text-align: center;

    h2 {
      font-size: 2.5rem;
      margin-bottom: var(--gap-20);
    }
    p {
      color: var(--c-muted);
      line-height: 1.8;
      margin-bottom: var(--gap-xl);
      font-size: 1.125rem;
    }

    .stats {
      display: flex;
      justify-content: center;
      gap: var(--gap-2xl);
      flex-wrap: wrap;

      .stat {
        h3 {
          font-size: 2rem;
          margin-bottom: var(--gap-sm);
          color: var(--c-accent);
        }
        p {
          color: var(--c-muted-2);
          font-size: 1rem;
        }
      }
    }
  }
}

/* =========================
   Contato
   ========================= */
.contact {
  background: linear-gradient(
    135deg,
    rgba(31, 31, 31, 0.9) 0%,
    rgba(18, 18, 18, 0.9) 100%
  );
  padding: var(--pad-section-y) var(--pad-section-x);
  color: var(--c-text);

  .contact-container {
    width: 100%;
  }

  h2 {
    font-size: 2.5rem;
    margin-bottom: var(--gap-20);
    text-align: center;
  }

  #contact-instructions {
    text-align: center;
    margin-bottom: var(--gap-xl);
    font-size: 1.125rem;
  }

  .contact-content {
    display: flex;
    gap: var(--gap-xl);
    justify-content: center;
    flex-wrap: wrap;

    .contact-info {
      flex: 1;
      min-width: 250px;
      max-width: 300px;

      .info-item {
        display: flex;
        align-items: center;
        margin-bottom: var(--gap-20);
        font-size: 1rem;
        position: relative;
        transition: transform 0.3s, color 0.3s;

        &:hover {
          transform: scale(1.05);
          color: var(--c-accent);
        }
        i {
          margin-right: var(--gap-sm);
          color: var(--c-accent);
          transition: color 0.3s;
        }
        &:hover i {
          color: var(--c-accent);
        }

        &::after {
          content: attr(data-tooltip);
          position: absolute;
          bottom: 125%;
          left: 50%;
          transform: translateX(-50%);
          background: #333;
          color: #fff;
          padding: var(--gap-xs) var(--gap-sm);
          border-radius: var(--radius);
          opacity: 0;
          pointer-events: none;
          transition: opacity 0.3s;
          white-space: nowrap;
          font-size: 0.9rem;
        }
        &:hover::after {
          opacity: 1;
        }

        a {
          color: #fff;
          text-decoration: none;
        }
      }
    }

    .contact-form {
      flex: 2;
      min-width: 300px;
      max-width: 600px;
      display: flex;
      flex-direction: column;
      gap: var(--gap-20);

      .form-group {
        display: flex;
        flex-direction: column;
        text-align: left;

        label {
          font-size: 1.125rem;
          margin-bottom: var(--gap-xs);
          color: var(--c-muted);
        }
        input,
        textarea {
          padding: var(--pad-input);
          border: 1px solid var(--c-border);
          border-radius: var(--radius);
          background-color: var(--c-bg);
          color: var(--c-text);
          font-size: 1rem;
          &:focus {
            outline: none;
            border-color: var(--c-accent);
          }
        }
      }

      #send-button {
        background-color: var(--c-accent);
        color: #fff;
        border: none;
        padding: 12px 20px;
        font-size: 1.125rem;
        font-weight: 500;
        border-radius: var(--radius);
        cursor: pointer;
        transition: background-color 0.3s ease, transform 0.3s ease;

        &:hover {
          background-color: #e03c1b;
          transform: scale(1.05);
        }
        &:focus {
          outline: none;
          box-shadow: 0 0 0 3px rgba(255, 75, 43, 0.5);
        }
      }

      .form-status {
        text-align: center;
        font-size: 1rem;
      }
    }
  }
}

/* =========================
   Rodapé
   ========================= */
footer {
  background-color: var(--c-bg);
  padding: 20px;
  text-align: center;
  font-size: 0.9rem;
  color: #666;
  border-top: 1px solid #222;
}

/* =========================
   Elementos flutuantes
   ========================= */
#bg-symbols {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -2;
  overflow: hidden;
}
.bg-symbol {
  position: absolute;
  color: #fff;
  font-size: 20px;
  opacity: 0.15;
  user-select: none;
  animation: floatSymbol 10s linear infinite;
}
@keyframes floatSymbol {
  from {
    transform: translateY(0);
    opacity: 0.8;
  }
  to {
    transform: translateY(100vh);
    opacity: 0;
  }
}

.scroll-down {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 2rem;
  color: var(--c-accent);
  cursor: pointer;
  animation: bounce 2s infinite;
  text-decoration: none;
}
@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}
@keyframes bounce-up {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* =========================
   Páginas de projetos
   ========================= */
.project-detail {
  padding: var(--pad-section-y) var(--pad-section-x);
  color: var(--c-text);

  h1 {
    font-size: 2.5rem;
    margin-bottom: var(--gap-20);
    text-align: center;
  }
  h2 {
    font-size: 2.5rem;
    margin-bottom: var(--gap-20);
    text-align: center;
  }

  .project-description {
    font-size: 1.125rem;
    margin-bottom: var(--gap-20);
    text-align: center;
    max-width: 800px;
    margin-inline: auto;
  }

  .project-technologies {
    margin-bottom: var(--gap-xl);
    text-align: center;

    h3 {
      font-size: 1.75rem;
      margin-bottom: var(--gap-sm);
    }
    ul {
      list-style: none;
      padding: 0;
      display: inline-flex;
      gap: var(--gap-sm);
      li {
        background-color: var(--c-accent);
        padding: var(--pad-chip-y) var(--pad-chip-x);
        border-radius: var(--radius);
        font-size: 0.9rem;
      }
    }
  }

  /* Carrossel da página de projeto – altura uniforme */
  .project-carousel {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    max-width: 800px;
    margin: 0 auto;
    aspect-ratio: 16 / 9;
    background: transparent;

    .carousel-inner {
      display: flex;
      transition: transform 0.5s ease-in-out;
      height: 100%;
    }
    .carousel-item {
      min-width: 100%;
      opacity: 0;
      transition: opacity 0.5s ease-in-out;
      height: 100%;
      &.active {
        opacity: 1;
      }
      img {
        width: 100%;
        height: 100%;
        object-fit: contain;
        display: block;
      }
    }

    .carousel-control {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      background: rgba(0, 0, 0, 0.5);
      border: none;
      color: #fff;
      padding: 10px;
      cursor: pointer;
      border-radius: 50%;
      z-index: 10;

      &.prev {
        left: 10px;
      }
      &.next {
        right: 10px;
      }
      &:hover {
        background: rgba(0, 0, 0, 0.7);
      }
    }
  }

  .project-navigation {
    margin-top: var(--gap-xl);
    text-align: center;
    display: flex;
    justify-content: center;
    gap: var(--gap-20);

    .project-nav-btn {
      background-color: var(--c-accent);
      color: #fff;
      padding: 10px 20px;
      border-radius: var(--radius);
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.3s ease;

      &:hover {
        background-color: #e03c1b;
        transform: scale(1.05);
      }
    }
  }
}

/* =========================
   Carrossel da home
   ========================= */
.projects-carousel {
  position: relative;
  max-width: 1800px;
  margin: var(--gap-xl) auto;
  overflow: hidden;
  padding: var(--pad-section-x);
  h2 {
    font-size: 2.5rem;
    margin-bottom: var(--gap-20);
    text-align: center;
  }
  #projects-text {
    text-align: center;
    margin-bottom: var(--gap-xl);
    font-size: 1.125rem;
  }
  .carousel-wrapper {
    position: relative;
  }
  .carousel-container {
    display: flex;
    transition: transform 0.5s ease-in-out;
  }

  .carousel-slide {
    flex: 0 0 calc(100% / 2);
    box-sizing: border-box;
    padding: var(--gap-sm);
    position: relative;
    aspect-ratio: 16 / 9; 
    overflow: hidden;
    border-radius: var(--radius);
    background: transparent;

    img {
      width: 100%;
      height: 100%;
      object-fit: cover; 
      display: block;
      border-radius: var(--radius);
    }

    .info-overlay {
      position: absolute;
      inset: 0;
      background: var(--c-overlay);
      color: #fff;
      opacity: 0;
      transition: opacity 0.3s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius);
      text-align: center;
      padding: var(--gap-sm);

      .more-info {
        background: #fff;
        color: #ff7f00;
        padding: 10px 20px;
        border-radius: var(--radius);
        text-decoration: none;
        margin-top: 15px;
        transition: background 0.3s, transform 0.3s;

        &:hover {
          background: #ffbe7f;
          transform: scale(1.05);
        }
      }
    }

    &:hover .info-overlay {
      opacity: 1;
    }
  }

  .carousel-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    border: none;
    color: #fff;
    padding: 10px;
    cursor: pointer;
    border-radius: 50%;
    z-index: 10;

    &.prev {
      left: 10px;
    }
    &.next {
      right: 10px;
    }
    &:hover {
      background: rgba(0, 0, 0, 0.7);
    }
  }

  .carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 15;

    .dot {
      width: 12px;
      height: 12px;
      background-color: #ccc;
      border-radius: 50%;
      cursor: pointer;
      transition: background-color 0.3s, transform 0.3s;

      &.active {
        background-color: var(--c-accent);
        transform: scale(1.2);
      }
    }
  }
}

/* =========================
   Responsividade
   ========================= */
@media (max-width: 768px) {
  header .header-container {
    .hamburger-menu {
      display: block;
    }

    .nav-menu {
      display: none;
      position: fixed;
      top: 0;
      right: 0;
      width: 60%;
      height: 100%;
      background: var(--c-bg);
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: var(--gap-xl);
      z-index: 9999;
      transform: translateX(100%);
      transition: transform 0.3s ease-in-out;

      &.active {
        display: flex;
        transform: translateX(0);
      }
      ul {
        flex-direction: column;
        gap: var(--gap-20);
      }
    }
  }

  .hero .hero-container {
    flex-direction: column;
  }
  .hero .hero-container .hero-text h1 {
    font-size: 2.8rem;
  }
  .hero .hero-container .hero-image {
    margin-top: var(--gap-xl);
  }

  .contact .contact-content {
    flex-direction: column;
    align-items: center;
  }

  .projects-carousel {
    max-width: 100%;
    width: 100%;
    padding: 10px;

    .carousel-slide {
      flex: 0 0 100%;
    }
    .carousel-control {
      display: none;
    } 
  }

  .project-detail .project-carousel {
    aspect-ratio: 3 / 4;
  } 
}

@media (max-width: 600px) {
  #timeline,
  .scroll-down {
    display: none;
  }
  #back-to-top {
    display: none !important;
  }
  .project-detail {
    padding: 40px 10px;

    h1 {
      font-size: 2rem;
    }
    .project-description {
      font-size: 1rem;
      max-width: 100%;
      padding: 0 10px;
    }

    .project-technologies {
      h3 {
        font-size: 1.5rem;
      }
      ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
      }
      li {
        padding: 4px 8px;
        font-size: 0.8rem;
      }
    }

    .project-carousel {
      max-width: 100%;
      margin: 20px auto;
    }
    .project-carousel .carousel-control {
      padding: 8px;
      font-size: 1.2rem;
    }

    .project-navigation {
      flex-direction: column;
      gap: 10px;
    }
    .project-nav-btn {
      padding: 8px 16px;
      font-size: 0.9rem;
    }
  }
}