/* =========================
   THEME VARIABLES
   ========================= */
:root {
  color-scheme: light;
  --color-primary: #5a6a7a; /* Azul acinzentado - cor principal (links, botões) */
  --color-secondary: #330010; /* Vinho escuro - usado em títulos e destaques */
  --color-background: #ffffff; /* Fundo padrão (light mode) */
  --color-surface: #f5f5f5; /* Superfícies sutis (cards, seções secundárias) */
  --color-text: #333333; /* Texto primário */
  --color-muted: #6c7682; /* Texto secundário e elementos menos importantes */
  --color-accent: #401a00; /* Marrom profundo - usado em detalhes ou destaques */

  --color-border: rgba(51, 0, 16, 0.08);
  --color-border-strong: rgba(51, 0, 16, 0.18);
  --color-topbar-bg: rgba(255, 255, 255, 0.92);
  --color-hero-gradient-start: rgba(90, 106, 122, 0.12);
  --color-hero-gradient-end: rgba(255, 255, 255, 0.95);
  --color-badge-bg: rgba(90, 106, 122, 0.12);
  --color-btn-ghost-hover: rgba(51, 0, 16, 0.08);
  --color-card-border: rgba(51, 0, 16, 0.1);
  --color-card-shadow: 0 16px 30px -22px rgba(51, 0, 16, 0.35);
  --color-card-shadow-hover: 0 24px 42px -20px rgba(51, 0, 16, 0.35);
  --color-metadata-bg: rgba(90, 106, 122, 0.12);
  --color-contact-gradient-start: rgba(51, 0, 16, 0.92);
  --color-contact-gradient-end: rgba(64, 26, 0, 0.88);
  --color-contact-shadow: 0 30px 70px -40px rgba(64, 26, 0, 0.65);
  --color-contact-badge-bg: rgba(255, 255, 255, 0.16);
  --color-btn-primary-shadow: 0 12px 24px rgba(90, 106, 122, 0.26);
  --color-btn-primary-shadow-hover: 0 18px 36px rgba(90, 106, 122, 0.32);

  --shadow-soft: 0 12px 32px rgba(51, 0, 16, 0.08); /* Sombra suave para cards */

  --radius-sm: 0.75rem; /* Bordas levemente arredondadas */
  --radius-md: 1rem;    /* Bordas médias */
  --radius-lg: 1.5rem;  /* Bordas grandes (cards principais) */
}

:root[data-theme='dark'] {
  color-scheme: dark;
  --color-primary: #94a6ba;
  --color-secondary: #e4c6d0;
  --color-background: #121212;
  --color-surface: #1d1d1d;
  --color-text: #f2f2f2;
  --color-muted: #b9c0c9;
  --color-accent: #c8a389;

  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.22);
  --color-topbar-bg: rgba(18, 18, 18, 0.92);
  --color-hero-gradient-start: rgba(90, 106, 122, 0.28);
  --color-hero-gradient-end: rgba(18, 18, 18, 0.95);
  --color-badge-bg: rgba(148, 166, 186, 0.2);
  --color-btn-ghost-hover: rgba(255, 255, 255, 0.08);
  --color-card-border: rgba(255, 255, 255, 0.12);
  --color-card-shadow: 0 16px 30px -22px rgba(0, 0, 0, 0.55);
  --color-card-shadow-hover: 0 24px 42px -20px rgba(0, 0, 0, 0.65);
  --color-metadata-bg: rgba(148, 166, 186, 0.22);
  --color-contact-gradient-start: rgba(28, 8, 14, 0.95);
  --color-contact-gradient-end: rgba(41, 16, 6, 0.92);
  --color-contact-shadow: 0 30px 70px -40px rgba(0, 0, 0, 0.75);
  --color-contact-badge-bg: rgba(255, 255, 255, 0.18);
  --color-btn-primary-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
  --color-btn-primary-shadow-hover: 0 18px 36px rgba(0, 0, 0, 0.5);

  --shadow-soft: 0 12px 32px rgba(0, 0, 0, 0.45);
}

/* =========================
   RESET & BASE
   ========================= */
* {
  box-sizing: border-box; /* Inclui borda e padding no cálculo do tamanho */
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth; /* Suaviza o scroll para links âncora */
}

body {
  font-family: 'Roboto', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased; /* Suaviza fontes em navegadores WebKit */
}

/* =========================
   TYPOGRAPHY
   ========================= */
h1,
h2,
h3 {
  font-family: 'Poppins', system-ui, sans-serif; /* Títulos com destaque */
  line-height: 1.2;
  color: var(--color-secondary);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover,
a:focus {
  color: var(--color-secondary);
}

/* =========================
   LAYOUT
   ========================= */
.container {
  width: min(1140px, 92vw); /* Largura máxima responsiva */
  margin: 0 auto;
}

/* ----- HEADER ----- */
.top-bar {
  position: sticky; /* Fixa no topo ao rolar */
  top: 0;
  z-index: 10;
  background: var(--color-topbar-bg);
  backdrop-filter: blur(8px); /* Efeito vidro fosco */
  border-bottom: 1px solid var(--color-border);
}

.top-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  gap: 1.5rem;
}

.brand-group {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.brand {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  color: var(--color-secondary);
}

/* ----- NAVIGATION ----- */
nav ul {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  font-weight: 500;
}

nav a {
  color: var(--color-muted);
}

nav a:hover,
nav a:focus {
  color: var(--color-secondary);
}

/* ----- LANGUAGE SWITCHER ----- */
.language-switcher {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.language-switcher button {
  background: transparent;
  border: none;
  color: var(--color-muted);
  font-weight: 600;
  cursor: pointer;
  padding: 0.2rem 0.35rem;
  border-radius: 999px;
  transition: color 0.2s ease, background 0.2s ease;
}

.language-switcher button[data-active] {
  color: var(--color-secondary);
  background: var(--color-btn-ghost-hover);
}

.language-switcher button:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

.language-switcher span {
  color: var(--color-muted);
}

/* =========================
   MAIN STRUCTURE
   ========================= */
main {
  display: grid;
  gap: 6rem;
  padding-bottom: 6rem;
}

/* ----- HERO SECTION ----- */
.hero {
  background: linear-gradient(135deg, var(--color-hero-gradient-start), var(--color-hero-gradient-end));
  padding: 3rem 0 6rem;
}

.hero-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Badge estilizada (pílula) */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  background: var(--color-badge-bg);
  color: var(--color-secondary);
  border-radius: 999px; /* Formato cápsula */
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

.hero h1 {
  font-size: clamp(2.3rem, 4vw + 1rem, 3.6rem); /* Escala responsiva */
  margin: 1rem 0;
}

.hero p {
  font-size: 1.05rem;
  color: var(--color-muted);
  max-width: 36rem;
}

/* ----- CALL TO ACTION ----- */
.cta-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin: 2.5rem 0 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.6rem;
  border-radius: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn.primary {
  background: var(--color-primary);
  color: #ffffff;
  box-shadow: var(--color-btn-primary-shadow);
}

.btn.primary:hover,
.btn.primary:focus {
  transform: translateY(-3px);
  box-shadow: var(--color-btn-primary-shadow-hover);
}

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

.btn.ghost:hover,
.btn.ghost:focus {
  background: var(--color-btn-ghost-hover);
}

/* ----- HERO HIGHLIGHTS ----- */
.hero-highlights {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.hero-highlights dt {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  color: var(--color-secondary);
  margin-bottom: 0.35rem;
}

.hero-highlights dd {
  color: var(--color-muted);
  margin-left: 0;
}

/* ----- HERO SIDE CARD ----- */
.hero-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: 1.5rem;
}

.hero-card h3 {
  margin-bottom: 0.75rem;
}

/* ----- CODE STYLING ----- */
pre {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.4rem;
  overflow-x: auto;
}

code {
  font-family: 'Fira Code', 'Roboto Mono', ui-monospace, SFMono-Regular, monospace;
  font-size: 0.9rem;
  color: var(--color-accent);
}

/* =========================
   SECTIONS
   ========================= */
.section {
  padding: 0 0 0;
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.section-header span {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.section-header h2 {
  font-size: clamp(1.9rem, 2.2vw + 1rem, 2.6rem);
}

.section-header p {
  max-width: 36rem;
  color: var(--color-muted);
}

/* ----- FEATURE LIST ----- */
.feature-list {
  display: grid;
  gap: 1.2rem;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding-left: 1.8rem;
  color: var(--color-muted);
}

.feature-list li::before {
  content: '›'; /* Setinha como marcador */
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-primary);
  font-size: 1.3rem;
  font-weight: 700;
}

/* ----- CARDS ----- */
.cards-grid {
  display: grid;
  gap: 1.6rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1.8rem;
  border: 1px solid var(--color-card-border);
  box-shadow: var(--color-card-shadow);
  display: grid;
  gap: 1rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover,
.card:focus-within {
  transform: translateY(-6px);
  box-shadow: var(--color-card-shadow-hover);
}

.card span.icon {
  font-size: 1.8rem;
}

.card h3 {
  font-size: 1.3rem;
}

.card p {
  color: var(--color-muted);
}

/* Metadata tags dentro dos cards */
.metadata {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.metadata span {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--color-metadata-bg);
}

/* ----- STATS SECTION ----- */
.stats-section {
  position: relative;
}

.stats-grid {
  display: grid;
  gap: 1.6rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-bottom: 2.5rem;
}

.stat-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1.6rem;
  border: 1px solid var(--color-card-border);
  box-shadow: var(--color-card-shadow);
  display: grid;
  gap: 0.65rem;
}

.stat-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-muted);
  font-weight: 600;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-secondary);
}

.stat-meta {
  font-size: 0.9rem;
  color: var(--color-muted);
}

.stats-detail {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.stats-panel {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1.6rem;
  border: 1px solid var(--color-card-border);
  box-shadow: var(--color-card-shadow);
}

.stats-panel h3 {
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.stats-list {
  list-style: none;
  display: grid;
  gap: 0.85rem;
}

.stats-placeholder {
  color: var(--color-muted);
  font-style: italic;
}

.stats-item {
  display: grid;
  gap: 0.35rem;
}

.stats-item-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-weight: 600;
}

.stats-item-label {
  color: var(--color-text);
}

.stats-item-value {
  color: var(--color-muted);
  font-weight: 600;
}

.stats-bar {
  height: 0.5rem;
  background: var(--color-badge-bg);
  border-radius: 999px;
  overflow: hidden;
}

.stats-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: inherit;
}

.stats-commit {
  display: grid;
  gap: 0.35rem;
}

.stats-commit strong {
  font-weight: 600;
}

.stats-commit small {
  color: var(--color-muted);
  font-size: 0.85rem;
}

.stats-updated {
  margin-top: 1.6rem;
  color: var(--color-muted);
  font-size: 0.9rem;
}

/* ----- CONTACT SECTION ----- */
.contact-card {
  display: grid;
  gap: 1rem;
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-contact-gradient-start), var(--color-contact-gradient-end));
  color: #ffffff;
  box-shadow: var(--color-contact-shadow);
}

.contact-card .badge {
  background: var(--color-contact-badge-bg);
  color: #ffffff;
}

.contact-card h2,
.contact-card p,
.contact-card a {
  color: #ffffff;
}

.contact-list {
  display: grid;
  gap: 0.75rem;
  list-style: none;
}

.contact-list a {
  display: inline-flex;
  gap: 0.6rem;
  align-items: center;
  font-weight: 500;
}

/* =========================
   FOOTER
   ========================= */
footer {
  padding: 3rem 0;
  background: var(--color-background);
  border-top: 1px solid var(--color-border);
}

/* ----- THEME TOGGLE ----- */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  color: var(--color-text);
  font-weight: 600;
  letter-spacing: 0.02em;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  background: var(--color-btn-ghost-hover);
  transform: translateY(-1px);
}

footer .container {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  color: var(--color-muted);
  font-size: 0.9rem;
}

/* =========================
   MEDIA QUERIES
   ========================= */
@media (max-width: 840px) {
  nav ul {
    gap: 1rem;
    font-size: 0.9rem;
  }

  .top-bar .container {
    flex-wrap: wrap;
  }
}

@media (max-width: 640px) {
  .top-bar .container {
    justify-content: center;
  }

  nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero {
    padding: 6rem 0 4rem;
  }

  .hero-card {
    padding: 1.6rem;
  }

  .card {
    padding: 1.5rem;
  }
}