:root {
  color-scheme: dark;
  --bg: #050507;
  --surface: #111216;
  --surface-alt: #15171d;
  --surface-muted: #1b1d24;
  --text: #f5f5f7;
  --text-muted: #9ba0ac;
  --border: rgba(255, 255, 255, 0.08);
  --accent: #8b5cf6;
  --accent-strong: #d8b4fe;
  --shadow: 0 22px 55px rgba(0, 0, 0, 0.24);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f8f8fb;
  --surface: #ffffff;
  --surface-alt: #f1f1f6;
  --surface-muted: #e8e8ef;
  --text: #13131a;
  --text-muted: #5d6471;
  --border: rgba(19, 19, 26, 0.1);
  --accent: #7c3aed;
  --accent-strong: #a78bfa;
  --shadow: 0 18px 45px rgba(37, 40, 54, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(139, 92, 246, 0.12), transparent 40%), var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
}

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

button, input, textarea {
  font: inherit;
}

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

.page-shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 24px 80px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0 24px;
}

.brand {
  font-size: 1rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--text-muted);
}

.theme-toggle {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 12px 20px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 148px;
  font-weight: 500;
}

.theme-toggle:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

/* ====================== HERO ====================== */
.hero {
  padding: 80px 0 60px;
}

.hero-grid {
  display: grid;
  gap: 40px;
  align-items: center;
}

.hero-content {
  max-width: 680px;
}

.hero-image {
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.15), rgba(255,255,255,0.03));
  border: 1px solid var(--border);
  border-radius: 32px;
  padding: 20px;
  box-shadow: var(--shadow);
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 20px;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 16px;
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 500;
}

h1 {
  margin: 0 0 24px;
  font-size: clamp(2.6rem, 5vw, 4.2rem);
  line-height: 1.05;
  font-weight: 700;
}

p {
  margin: 0 0 32px;
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-muted);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 14px 28px;
  font-weight: 600;
  transition: all 0.25s ease;
}

.btn:hover {
  transform: translateY(-3px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 15px 35px rgba(139, 92, 246, 0.25);
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
  background: transparent;
}

/* ====================== SEÇÕES GERAIS ====================== */
.section {
  padding: 60px 0;
}

.section-label {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.section-header h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
}

.section-subtitle {
  color: var(--accent);
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  margin-bottom: 8px;
  font-weight: 500;
}

/* ====================== SOBRE MIM ====================== */
.about-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.about-card {
  padding: 32px;
}

.tech-summary {
  padding: 32px;
}

.tech-summary h2 {
  margin-bottom: 20px;
}

.tech-summary ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}

.tech-summary li {
  padding-left: 1.3rem;
  position: relative;
  color: var(--text-muted);
  font-size: 1.02rem;
}

.tech-summary li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 1.1rem;
}

/* ====================== TECH STACK ====================== */
.stack-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.stack-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-list span {
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(139, 92, 246, 0.15);
  color: var(--text);
  font-size: 0.93rem;
  font-weight: 500;
}

/* ====================== PROJETOS ====================== */
.projects-grid {
  display: grid;
  gap: 24px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 32px;
  display: grid;
  gap: 20px;
  transition: all 0.3s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.18);
}

.project-tag {
  display: inline-flex;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 500;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.97rem;
}

.project-links a {
  color: var(--accent);
  font-weight: 500;
  position: relative;
}

.project-links a:hover::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
}

/* ====================== CONTATO ====================== */
.contact-grid {
  display: grid;
  gap: 28px;
}

.contact-form {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 32px;
  display: grid;
  gap: 20px;
}

.contact-form label {
  display: grid;
  gap: 8px;
  font-size: 0.97rem;
}

.contact-form input,
.contact-form textarea {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 14px 18px;
  border-radius: 16px;
  outline: none;
  transition: all 0.2s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.12);
}

/* ====================== FOOTER ====================== */
.site-footer {
  margin-top: 64px;
  padding: 32px 0 24px;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 16px;
}

@media (max-width: 720px) {
  .footer-content {
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }
}

.footer-links a {
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--accent);
}

/* ====================== ANIMAÇÕES ====================== */
.section-fade {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.9s cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

/* ====================== RESPONSIVIDADE ====================== */
@media (min-width: 720px) {
  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
  }
  
  .about-grid {
    grid-template-columns: 1.35fr 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr 1.1fr;
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding: 20px 20px 60px;
  }
  
  .topbar {
    flex-direction: column;
    gap: 20px;
    align-items: flex-start;
  }
  
  .hero {
    padding-top: 40px;
  }
  
  .section {
    padding: 50px 0;
  }
}