:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --border-color: #dee2e6;
  --accent: #007bff;
  --error: #dc3545;
}

[data-theme="dark"] {
  --bg-primary: #121212;
  --bg-secondary: #1e1e1e;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --border-color: #333333;
  --accent: #37bef1;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: 100%;
}

/* Header preparado para conter anúncios lado a lado de forma fluida */
header {
  background-color: var(--bg-secondary);
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.header-brand h1 {
  margin: 0;
  font-size: 1.5rem;
  white-space: nowrap;
}

/* Espaço reservado para o banner dentro do Header */
.ads-header {
  background-color: var(--bg-primary);
  border: 1px dashed var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: bold;
  height: 60px;
  flex-grow: 1;
  max-width: 728px;
}

@media (max-width: 600px) {
  .ads-header {
    display: none;
  }

  /* Oculta em telas muito pequenas para não quebrar layout */
}

/* Atualize apenas este bloco no seu global.css */
footer {
  background-color: var(--bg-secondary);
  padding: 0.75rem 1.5rem;
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: row;
  /* Alinha tudo em uma linha única */
  justify-content: space-between;
  /* Texto na esquerda, links na direita */
  align-items: center;
  width: 100%;
  box-sizing: border-box;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

footer p {
  margin: 0;
}

footer nav {
  display: flex;
  gap: 1rem;
  /* Espaçamento limpo entre os links */
}

footer nav a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

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


.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.tool-card {
  background-color: var(--bg-secondary);
  padding: 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s, border-color 0.2s;
}

.tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

button {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 500;
}

button:hover {
  background-color: var(--bg-secondary);
}

.ads-placeholder {
  background-color: var(--bg-secondary);
  border: 2px dashed var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  box-sizing: border-box;
  width: 100%;
}