/* =========================================
   RESET & BASE
   ========================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --black: #0a0a0a;
  --white: #f5f5f5;
  --white-pure: #ffffff;
  --gray-dark: #1a1a1a;
  --gray-mid: #2e2e2e;
  --gray-border: #2a2a2a;
  --gray-text: #888888;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --transition: 0.3s ease;
  --max-w: 1160px;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--black);
  color: var(--white);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

img {
  display: block;
  max-width: 100%;
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* =========================================
   TYPOGRAPHY HELPERS
   ========================================= */
.section__tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-text);
  margin-bottom: 12px;
  border-left: 2px solid var(--white);
  padding-left: 10px;
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--white-pure);
}

.section__header {
  margin-bottom: 56px;
}

/* =========================================
   BUTTONS
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: 2px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  border: 1.5px solid transparent;
}

.btn--primary {
  background: var(--black);
  color: var(--white-pure);
  border-color: var(--black);
}

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

.btn--outline {
  background: transparent;
  color: var(--black);
  border-color: #999;
}

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

/* Botões em seções escuras — inverte as cores */
.about .btn--primary,
.projects .btn--primary,
.contact .btn--primary,
.footer .btn--primary {
  background: var(--white-pure);
  color: var(--black);
  border-color: var(--white-pure);
}

.about .btn--primary:hover,
.projects .btn--primary:hover,
.contact .btn--primary:hover,
.footer .btn--primary:hover {
  background: transparent;
  color: var(--white-pure);
  border-color: var(--white-pure);
}

/* =========================================
   NAVIGATION
   ========================================= */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  background: var(--black);
  transition: padding var(--transition);
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.97);
  backdrop-filter: blur(10px);
  padding: 14px 48px;
  border-bottom: 1px solid var(--gray-border);
}

/* Logo some quando está no hero (topo da página) */
.nav__logo {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--white-pure);
  transition: opacity var(--transition), visibility var(--transition);
}

.nav__logo span {
  color: var(--white-pure);
}

.nav__links {
  display: flex;
  gap: 40px;
}

.nav__links a {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--gray-text);
  transition: color var(--transition);
  position: relative;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--white-pure);
  transition: width var(--transition);
}

.nav__links a:hover {
  color: var(--white-pure);
}

.nav__links a:hover::after {
  width: 100%;
}

/* Grupo de ícones sociais dentro do nav mobile */
.nav__links-social {
  display: none; /* escondido no desktop */
  gap: 24px;
}

.nav__links-social a {
  color: var(--gray-text);
  display: flex;
  align-items: center;
  transition: color var(--transition);
}

.nav__links-social a:hover {
  color: var(--white-pure);
}

/* underline não se aplica aos ícones */
.nav__links-social a::after {
  display: none;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--white);
  transition: transform var(--transition), opacity var(--transition);
}

.nav__toggle.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav__toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav__toggle.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* =========================================
   HERO
   ========================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 48px 80px;
  overflow: hidden;
  background: var(--white-pure);
}

/* Vinheta lateral sutil sobre o fundo branco */
.hero::before {
  content: none;
}

.hero__bg-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(100px, 22vw, 280px);
  font-weight: 900;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0,0,0,0.06);
  white-space: nowrap;
  user-select: none;
  pointer-events: none;
  z-index: 2;
}

.hero__tag {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #888;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero__tag::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 1px;
  background: #888;
}

.hero__title {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--black);
  margin-bottom: 24px;
}

.hero__title span {
  color: var(--black);
  position: relative;
  display: inline-block;
}

.hero__title span::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--black);
  opacity: 0.2;
}

.hero__desc {
  font-size: 1.1rem;
  color: #666;
  max-width: 480px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 48px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #999;
  z-index: 3;
}

.hero__scroll-line {
  width: 48px;
  height: 1px;
  background: #ccc;
  position: relative;
  overflow: hidden;
}

.hero__scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--black);
  animation: scrollLine 2s ease infinite;
}

.hero__content {
  position: relative;
  z-index: 3;
  max-width: 680px;
}

@keyframes scrollLine {
  0%   { left: -100%; }
  100% { left: 100%; }
}

/* =========================================
   ABOUT
   ========================================= */
.about {
  padding: 120px 0;
  border-top: 1px solid var(--gray-border);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: center;
}

.about__visual {
  position: relative;
}

.about__img-wrap {
  aspect-ratio: 3/4;
  background: var(--gray-dark);
  border: 1px solid var(--gray-border);
  overflow: hidden;
}

.about__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  filter: grayscale(20%);
  transition: transform 0.6s ease, filter 0.6s ease;
}

.about__img-wrap:hover img {
  transform: scale(1.04);
  filter: grayscale(0%);
}

.about__badge {
  position: absolute;
  bottom: -24px;
  right: -24px;
  background: var(--white-pure);
  color: var(--black);
  padding: 20px 24px;
  text-align: center;
  border: 1px solid var(--gray-border);
}

.about__badge strong {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
}

.about__badge span {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--gray-mid);
  margin-top: 4px;
}

.about__text {
  padding-bottom: 24px;
}

.about__text .section__title {
  margin-bottom: 24px;
}

.about__text p {
  color: var(--gray-text);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about__skills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.about__skills li {
  padding: 6px 16px;
  border: 1px solid var(--gray-border);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--gray-text);
  transition: border-color var(--transition), color var(--transition);
}

.about__skills li:hover {
  border-color: var(--white);
  color: var(--white-pure);
}

/* =========================================
   PROJECTS
   ========================================= */
.projects {
  padding: 120px 0;
  border-top: 1px solid var(--gray-border);
  background: var(--gray-dark);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
}

.project-card--large {
  grid-column: 1 / -1;
}

.project-card {
  background: var(--black);
  overflow: hidden;
  cursor: pointer;
}

.project-card__thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.project-card--large .project-card__thumb {
  aspect-ratio: 21/9;
}

.project-card__img {
  width: 100%;
  height: 100%;
  background: var(--gray-mid);
  overflow: hidden;
  transition: transform 0.6s ease;
}

.project-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease, filter 0.6s ease;
  filter: brightness(0.85) saturate(1.1);
}

.project-card:hover .project-card__img img {
  transform: scale(1.06);
  filter: brightness(0.7) saturate(1.2);
}

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
  z-index: 1;
}

.project-card:hover .project-card__overlay {
  opacity: 1;
}

.project-card__play {
  width: 64px;
  height: 64px;
  border: 1.5px solid var(--white-pure);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--white-pure);
  padding-left: 4px;
  transition: background var(--transition);
}

.project-card:hover .project-card__play {
  background: var(--white-pure);
  color: var(--black);
}

.project-card__info {
  padding: 24px 28px;
  border-top: 1px solid var(--gray-border);
}

.project-card__tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-text);
}

.project-card__info h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 8px 0 6px;
  color: var(--white-pure);
}

.project-card__info p {
  font-size: 0.85rem;
  color: var(--gray-text);
  line-height: 1.6;
}

/* =========================================
   CONTACT
   ========================================= */
.contact {
  padding: 120px 0;
  border-top: 1px solid var(--gray-border);
}

.contact__inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.contact__inner .section__tag {
  border-left: none;
  padding-left: 0;
  border-bottom: 2px solid var(--white);
  padding-bottom: 6px;
}

.contact__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--white-pure);
  margin: 16px 0;
}

.contact__desc {
  color: var(--gray-text);
  margin-bottom: 48px;
}

.contact__form {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.form__group label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-text);
}

.form__group input,
.form__group textarea {
  background: var(--gray-dark);
  border: 1px solid var(--gray-border);
  color: var(--white-pure);
  padding: 14px 16px;
  font-family: var(--font);
  font-size: 0.95rem;
  border-radius: 2px;
  transition: border-color var(--transition);
  outline: none;
  resize: none;
}

.form__group input::placeholder,
.form__group textarea::placeholder {
  color: #444;
}

.form__group input:focus,
.form__group textarea:focus {
  border-color: var(--white);
}

.contact__form .btn {
  align-self: flex-end;
  margin-top: 8px;
}

.contact__feedback {
  margin-top: 16px;
  font-size: 0.9rem;
  min-height: 24px;
  color: var(--gray-text);
  text-align: center;
}

.contact__feedback.success {
  color: var(--white-pure);
}

/* =========================================
   FOOTER
   ========================================= */
.footer {
  background: var(--gray-dark);
  border-top: 1px solid var(--gray-border);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 60px;
  align-items: center;
  padding: 48px 24px;
}

.footer__brand .nav__logo {
  display: block;
  margin-bottom: 12px;
}

.footer__brand p {
  font-size: 0.85rem;
  color: var(--gray-text);
  line-height: 1.6;
}

.footer__nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__nav a {
  font-size: 0.85rem;
  color: var(--gray-text);
  transition: color var(--transition);
  letter-spacing: 0.03em;
}

.footer__nav a:hover {
  color: var(--white-pure);
}

.footer__social {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-end;
}

.footer__social a {
  color: var(--gray-text);
  transition: color var(--transition), transform var(--transition);
  display: flex;
  align-items: center;
}

.footer__social a:hover {
  color: var(--white-pure);
  transform: translateY(-2px);
}

.footer__bottom {
  border-top: 1px solid var(--gray-border);
  padding: 20px 24px;
  text-align: center;
}

.footer__bottom p {
  font-size: 0.8rem;
  color: var(--gray-text);
}

/* =========================================
   ANIMATIONS — FADE IN
   ========================================= */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 900px) {
  .nav {
    padding: 18px 24px;
  }
  .nav.scrolled {
    padding: 14px 24px;
  }

  .nav__links {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100vh;
    background: var(--black);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    z-index: 99;
  }

  .nav__links.open {
    display: flex;
  }

  .nav__links a {
    font-size: 1.5rem;
    color: var(--white-pure);
  }

  .nav__links-social {
    display: flex;
  }

  .nav__toggle {
    display: flex;
    z-index: 101;
  }

  .hero {
    padding: 100px 24px 80px;
  }

  .hero__scroll {
    left: 24px;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .about__badge {
    right: 0;
  }

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

  .project-card--large {
    grid-column: auto;
  }

  .project-card--large .project-card__thumb {
    aspect-ratio: 16/9;
  }

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

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .footer__social {
    align-items: center;
    flex-direction: row;
    justify-content: center;
    gap: 24px;
  }

  .footer__nav {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 32px;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .contact__form .btn {
    align-self: stretch;
  }
}