:root {
  --bg-primary: #0b1020;
  --bg-secondary: #121a2b;
  --bg-card: rgba(24, 34, 53, 0.78);
  --text-primary: #e5e7eb;
  --text-secondary: #9aa8c4;
  --text-muted: #6b7a99;
  --accent-green: #22c55e;
  --accent-blue: hsl(50, 93%, 60%);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.25);
  --shadow-strong: 0 20px 60px rgba(0, 0, 0, 0.4);
  --container: 1200px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.35s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", sans-serif;
  color: var(--text-primary);
  background:
    radial-gradient(
      circle at top left,
      rgba(34, 197, 94, 0.08),
      transparent 28%
    ),
    radial-gradient(
      circle at top right,
      rgba(56, 189, 248, 0.08),
      transparent 30%
    ),
    linear-gradient(180deg, #0b1020 0%, #0d1324 50%, #0a1020 100%);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.35), transparent 90%);
  pointer-events: none;
  z-index: 0;
}

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

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

section {
  position: relative;
  z-index: 1;
}

.header {
  width: 100%;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(18px);
  background: rgba(11, 16, 32, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px 24px;
}

.logo {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  white-space: nowrap;
}

.header nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.header nav a {
  position: relative;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition:
    color var(--transition-fast),
    transform var(--transition-fast);
}

.header nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -7px;
  width: 0%;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
  transition: width var(--transition-normal);
}

.header nav a:hover,
.header nav a.nav-active {
  color: var(--text-primary);
}

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

.hero,
.about,
.skills,
#contact,
footer {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.hero {
  min-height: calc(100vh - 86px);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
  padding-top: 48px;
  padding-bottom: 72px;
}

.hero-text {
  position: relative;
}

.hero-text::before {
  content: "";
  position: absolute;
  top: -24px;
  left: 0;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(34, 197, 94, 0.22), transparent 70%);
  filter: blur(18px);
  z-index: -1;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.hero-badges span {
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-strong);
}

.hero-text h1 {
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 14px;
}

.hero-text h2 {
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 600;
  color: var(--accent-green);
  margin-bottom: 24px;
}

.hero-text p {
  max-width: 680px;
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 32px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.96rem;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
}

.btn:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, var(--accent-green), #18a84f);
  color: #05110a;
  box-shadow: 0 12px 28px rgba(34, 197, 94, 0.28);
}

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

.hero-image::before {
  content: "";
  position: absolute;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(56, 189, 248, 0.16), transparent 55%),
    radial-gradient(circle at 30% 30%, rgba(34, 197, 94, 0.16), transparent 45%);
  filter: blur(10px);
  z-index: 0;
}

.hero-image img {
  position: relative;
  z-index: 1;
  width: min(100%, 234px);
  object-fit: contain;
  filter: drop-shadow(0 18px 30px rgba(0, 0, 0, 0.35));
  animation: floatHero 5.5s ease-in-out infinite;
}

.about,
.skills,
#contact {
  padding-top: 90px;
  padding-bottom: 90px;
  scroll-margin-top: 110px;
}

.about h2,
.skills h2,
#contact h2 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}

.about p,
.skills > p,
#contact > p {
  max-width: 820px;
  color: var(--text-secondary);
  font-size: 1.02rem;
}

.about {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: start;
}

.about-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.about-card {
  min-height: 180px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 20px;
  box-shadow: var(--shadow-soft);
  transition:
    border-color 0.6s ease,
    box-shadow 0.6s ease;
}

.about-card span {
  display: inline-flex;
  margin-bottom: 10px;
  color: var(--accent-green);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.about-card p {
  color: var(--text-secondary);
  font-size: 0.96rem;
}

.about-card:hover {
  border-color: var(--accent-green);
  box-shadow: 0 15px 40px rgba(34, 197, 94, 0.15);
}

.skills > p {
  margin-bottom: 34px;
}

.skill-cards {
  display: flex;
  justify-content: center;
  gap: 28px;
  align-items: flex-start;
}

.contact-grid {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 34px;
}

.is-selectable {
  width: 350px;
  height: 350px;
}

.contact-grid .is-selectable {
  width: 215px;
  height: 215px;
  flex: 0 0 auto;
}

.card {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 80%;
  height: 80%;
  transform: translate(-50%, -50%) scale(1);
  transform-origin: center;
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.03),
      rgba(255, 255, 255, 0.01)
    ),
    var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
  z-index: 2;
  padding: 22px;
  display: flex;
  flex-direction: column;
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.card:hover {
  transform: translate(-50%, -50%) scale(1.025);
  border-color: var(--accent-green);
  box-shadow: var(--shadow-strong);
}

.contact-card {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 80%;
  height: 80%;
  transform: translate(-50%, -50%) scale(1);
  transform-origin: center;
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.03),
      rgba(255, 255, 255, 0.01)
    ),
    var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
  z-index: 2;
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px;
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.contact-card:hover {
  transform: translate(-50%, -50%) scale(1.025);
  border-color: var(--accent-green);
  box-shadow: var(--shadow-strong);
}

.skill-top {
  display: grid;
  grid-template-columns: 30% 70%;
  align-items: center;
  margin-bottom: 12px;
}

.skill-title-wrap {
  display: flex;
  align-items: center;
  min-height: 100%;
  padding-left: 8px;
}

.skill-title-wrap h3 {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.1;
}

.skill-description {
  margin-bottom: 12px;
}

.skill-description p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.45;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
  padding-top: 0;
}

.project-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.project-links a:hover {
  transform: translateY(-2px);
}

.contact-card img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  image-rendering: pixelated;
  margin-bottom: 2px;
}

.contact-card h3 {
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.2;
}

.contact-card p {
  color: var(--text-secondary);
  font-size: 0.84rem;
  line-height: 1.3;
}

footer {
  position: relative;
  z-index: 1;
  padding-top: 28px;
  padding-bottom: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
}

footer p {
  text-align: center;
  font-size: 0.95rem;
}

/* seleção */
.selection-arrow {
  position: absolute;
  top: -34px;
  left: 50%;
  width: 26px;
  height: 26px;
  object-fit: contain;
  image-rendering: pixelated;
  opacity: 0;
  transform: translateX(-50%) translateY(-4px) scale(0.95);
  transition:
    opacity 0.18s ease,
    transform 0.18s ease;
  pointer-events: none;
  z-index: 5;
}

.selection-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: fill;
  image-rendering: pixelated;
  opacity: 0;
  transition: opacity 0.18s ease;
  pointer-events: none;
  z-index: 1;
}

.is-selectable.is-active .selection-arrow {
  opacity: 1;
  transform: translateX(-50%) translateY(0) scale(1);
}

.is-selectable.is-active .selection-frame {
  opacity: 0.95;
}

.reveal-element {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.7s ease,
    transform 0.7s ease;
}

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

/* mobile */
@media (max-width: 560px) {
  .header {
    flex-direction: column;
    gap: 14px;
    padding-top: 16px;
    padding-bottom: 16px;
  }

  .header nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px 18px;
  }

  .hero,
  .about,
  .skills,
  #contact,
  footer {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 56px;
    padding-bottom: 56px;
  }

  .hero-badges,
  .hero-buttons {
    justify-content: center;
  }

  .hero-text p {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-image {
    order: -1;
  }

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

  .about-cards {
    grid-template-columns: 1fr;
  }

  .skill-cards {
    flex-direction: column;
    align-items: center;
    gap: 22px;
  }

  .contact-grid {
    display: flex;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    justify-items: center;
  }

  .is-selectable {
    width: min(360px, 92vw);
    height: min(360px, 92vw);
  }

  .contact-grid .is-selectable {
    width: min(150px, 40vw);
    height: min(150px, 40vw);
  }

  .card {
    width: 100%;
    aspect-ratio: 1 / 1;
    padding: 22px 22px 26px 22px;
  }

  .contact-card {
    width: 90%;
    height: 90%;
    padding: 14px;
  }

  .skill-top {
    margin-bottom: 8px;
  }

  .card-icon {
    width: 94%;
    height: 94%;
  }

  .skill-title-wrap {
    padding-left: 6px;
  }

  .skill-title-wrap h3 {
    font-size: 1rem;
  }

  .skill-description {
    margin-bottom: 8px;
  }

  .skill-description p {
    font-size: 0.82rem;
    line-height: 1.35;
  }

  .card-action {
    margin-top: auto;
    padding-top: 8px;
    padding-bottom: 0;
  }

  .project-links {
    margin-top: auto;
    padding-top: 0;
  }

  .project-links a {
    min-height: 32px;
    padding: 0 12px;
    font-size: 0.76rem;
  }

  .contact-card img {
    width: 44px;
    height: 44px;
  }

  .contact-card h3 {
    font-size: 0.92rem;
  }

  .contact-card p {
    font-size: 0.78rem;
  }

  .about p,
  .skills > p,
  #contact > p {
    font-size: 0.9rem;
  }

  .btn {
    width: 100%;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .selection-arrow,
  .selection-frame {
    display: none !important;
  }

  .is-selectable.is-active .selection-arrow,
  .is-selectable.is-active .selection-frame {
    display: none !important;
    opacity: 0 !important;
  }

  .card:hover,
  .contact-card:hover {
    transform: translate(-50%, -50%) scale(1);
    border-color: var(--border);
    box-shadow: var(--shadow-soft);
  }
}

@keyframes floatHero {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-8px);
  }
  100% {
    transform: translateY(0px);
  }
}

@keyframes mobileCardFloat {
  0% {
    transform: translate(-50%, -50%) scale(1);
    box-shadow: var(--shadow-soft);
  }

  50% {
    transform: translate(-50%, -51%) scale(1.01);
    box-shadow: 0 16px 34px rgba(0, 0, 0, 0.32);
  }

  100% {
    transform: translate(-50%, -50%) scale(1);
    box-shadow: var(--shadow-soft);
  }
}