:root {
  --background: 0 0% 100%;
  --foreground: 240 10% 9%;
  --muted: 240 5% 96%;
  --muted-foreground: 240 4% 44%;
  --primary: 240 10% 9%;
  --primary-foreground: 0 0% 100%;
  --accent: 240 5% 95%;
  --accent-foreground: 240 10% 9%;
  --border: 240 6% 90%;
  --link: 221 83% 50%;
  --radius: 0.5rem;
}

.dark {
  --background: 240 10% 5%;
  --foreground: 0 0% 96%;
  --muted: 240 4% 14%;
  --muted-foreground: 240 5% 60%;
  --primary: 0 0% 96%;
  --primary-foreground: 240 10% 5%;
  --accent: 240 4% 13%;
  --accent-foreground: 0 0% 96%;
  --border: 240 4% 16%;
  --link: 213 94% 70%;
}

body {
  background-color: hsl(var(--background));
  color: hsl(var(--foreground));
  font-family:
    'Inter',
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.markdown-body {
  font-size: 1.0625rem;
  line-height: 1.75;
  letter-spacing: -0.003em;
  word-wrap: break-word;
}

.markdown-body > *:first-child {
  margin-top: 0;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  color: hsl(var(--foreground));
  line-height: 1.2;
  margin-top: 2.75rem;
  margin-bottom: 0.85rem;
}

.markdown-body h1 {
  font-size: clamp(2.1rem, 5vw, 2.7rem);
  font-weight: 800;
  letter-spacing: -0.028em;
  margin-bottom: 0.75rem;
}

.markdown-body h1 + h2 {
  margin-top: 0.6rem;
  margin-bottom: 2.25rem;
  font-size: 1.35rem;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -0.012em;
  color: hsl(var(--muted-foreground));
}

.markdown-body h2 {
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.018em;
  margin-top: 3.25rem;
}

.markdown-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-top: 2.25rem;
}

.markdown-body p {
  margin-bottom: 1.35rem;
}

.markdown-body strong {
  font-weight: 600;
  color: hsl(var(--foreground));
}

.markdown-body a {
  color: hsl(var(--link));
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: opacity 0.15s ease;
}
.markdown-body a:hover {
  opacity: 0.7;
}

.markdown-body code {
  background-color: hsl(var(--muted));
  color: hsl(var(--foreground));
  padding: 0.15em 0.4em;
  border-radius: calc(var(--radius) - 3px);
  font-size: 0.875em;
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
}

.markdown-body pre {
  background-color: hsl(var(--muted));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  padding: 1em 1.15em;
  overflow-x: auto;
  margin-bottom: 1.35rem;
  font-size: 0.9em;
}
.markdown-body pre code {
  background: none;
  padding: 0;
  font-size: inherit;
}

.markdown-body blockquote {
  border-left: 3px solid hsl(var(--border));
  padding-left: 1.1em;
  color: hsl(var(--muted-foreground));
  font-style: italic;
  margin: 0 0 1.35rem 0;
}

.markdown-body ul,
.markdown-body ol {
  padding-left: 1.4em;
  margin-bottom: 1.35rem;
}
.markdown-body ul {
  list-style-type: disc;
}
.markdown-body ol {
  list-style-type: decimal;
}
.markdown-body li {
  margin-bottom: 0.4rem;
  padding-left: 0.25em;
}
.markdown-body li::marker {
  color: hsl(var(--muted-foreground));
}

.markdown-body hr {
  border: none;
  border-top: 1px solid hsl(var(--border));
  margin: 3rem 0;
}

.markdown-body img {
  max-width: 100%;
  border-radius: var(--radius);
  margin: 1.5rem 0;
}

.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.35rem;
  font-size: 0.95em;
}
.markdown-body th,
.markdown-body td {
  border: 1px solid hsl(var(--border));
  padding: 0.5em 0.85em;
  text-align: left;
}
.markdown-body th {
  background-color: hsl(var(--muted));
  font-weight: 600;
}

.markdown-body .byline {
  display: flex;
  margin-top: 8px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin: -1rem 0 2.75rem;
}
.markdown-body .byline-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.markdown-body .byline img {
  height: 44px;
  width: 44px;
  border-radius: 9999px;
  object-fit: cover;
  margin: 0;
  border: 1px solid hsl(var(--border));
}
.markdown-body .byline-info {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.markdown-body .byline-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: hsl(var(--foreground));
  line-height: 1.25;
}
.markdown-body .byline-username {
  font-size: 0.85rem;
  color: hsl(var(--muted-foreground));
  line-height: 1.25;
}
.markdown-body .byline-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.markdown-body .byline-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  width: 36px;
  border-radius: 9999px;
  border: 1px solid hsl(var(--border));
  color: hsl(var(--muted-foreground));
  text-decoration: none;
  transition:
    color 0.15s ease,
    background-color 0.15s ease,
    border-color 0.15s ease;
}
.markdown-body .byline-links a:hover {
  color: hsl(var(--foreground));
  background-color: hsl(var(--accent));
  border-color: hsl(var(--foreground));
  opacity: 1;
}

/* ── Modal de contato ── */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.modal.is-open {
  display: flex;
}
.modal-overlay {
  position: absolute;
  inset: 0;
  background-color: rgb(0 0 0 / 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: modalFadeIn 0.15s ease;
}
.modal-content {
  position: relative;
  width: 100%;
  max-width: 420px;
  background-color: hsl(var(--background));
  border: 1px solid hsl(var(--border));
  border-radius: calc(var(--radius) + 4px);
  padding: 1.75rem 1.75rem 1.5rem;
  box-shadow:
    0 20px 25px -5px rgb(0 0 0 / 0.15),
    0 10px 10px -5px rgb(0 0 0 / 0.08);
  animation: modalSlideIn 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.modal-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 32px;
  width: 32px;
  border-radius: 9999px;
  color: hsl(var(--muted-foreground));
  background: transparent;
  border: none;
  cursor: pointer;
  transition:
    color 0.15s ease,
    background-color 0.15s ease;
}
.modal-close:hover {
  color: hsl(var(--foreground));
  background-color: hsl(var(--accent));
}
.modal-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.018em;
  color: hsl(var(--foreground));
  margin: 0 0 0.5rem 0;
}
.modal-description {
  font-size: 0.95rem;
  line-height: 1.55;
  color: hsl(var(--muted-foreground));
  margin: 0 0 1.25rem 0;
}

.contact-email {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.5rem 0.5rem 0.85rem;
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  background-color: hsl(var(--muted));
}
.contact-email-link {
  flex: 1;
  min-width: 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: hsl(var(--foreground));
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.contact-email-link:hover {
  text-decoration: underline;
}
.contact-copy {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  height: 34px;
  padding: 0 0.75rem;
  border-radius: calc(var(--radius) - 2px);
  border: 1px solid hsl(var(--border));
  background-color: hsl(var(--background));
  color: hsl(var(--foreground));
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition:
    background-color 0.15s ease,
    border-color 0.15s ease;
}
.contact-copy:hover {
  background-color: hsl(var(--accent));
  border-color: hsl(var(--foreground));
}
.contact-copy.is-copied {
  color: hsl(142 70% 35%);
  border-color: hsl(142 70% 35%);
}
.dark .contact-copy.is-copied {
  color: hsl(142 70% 55%);
  border-color: hsl(142 70% 55%);
}
.contact-copy .hidden {
  display: none;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}
.skeleton {
  animation: pulse 1.8s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ── Mobile ── */
@media (max-width: 640px) {
  .markdown-body {
    font-size: 1rem;
    line-height: 1.7;
  }

  .markdown-body h1 + h2 {
    font-size: 1.15rem;
    margin-bottom: 1.75rem;
  }

  .markdown-body h2 {
    font-size: 1.3rem;
    margin-top: 2.5rem;
  }

  .markdown-body h3 {
    font-size: 1.1rem;
    margin-top: 1.75rem;
  }

  .markdown-body hr {
    margin: 2rem 0;
  }

  .markdown-body blockquote {
    padding-left: 0.9em;
  }

  .markdown-body .byline {
    gap: 0.75rem;
    margin: -0.5rem 0 2rem;
  }

  .markdown-body .byline img {
    height: 40px;
    width: 40px;
  }

  .markdown-body .byline-links {
    gap: 0.4rem;
  }

  .markdown-body .byline-links a {
    height: 34px;
    width: 34px;
  }
}