:root {
  --bg-color: #f7f7f8;
  --card-bg: #ffffff;
  --primary-text: #1c1c1e;
  --secondary-text: #6c6c70;
  --accent-color: #007aff;
  --warning-bg: #fff5f5;
  --warning-border: #ff3b30;
  --border-radius: 16px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--primary-text);
  line-height: 1.6;
  padding: 32px 16px;
}

.container {
  max-width: 768px;
  margin: 0 auto;
}

/* Seletor de Idioma Estilizado */
.language-selector {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 32px;
}

.language-selector button {
  background-color: #e5e5ea;
  border: none;
  border-radius: 20px;
  padding: 8px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--secondary-text);
  cursor: pointer;
  transition: all 0.2s ease;
}

.language-selector button.active {
  background-color: var(--accent-color);
  color: #ffffff;
}

/* Controle de exibição das abas */
.lang-content {
  display: none;
}

.lang-content.active {
  display: block;
}

header {
  margin-bottom: 32px;
  text-align: center;
}

header h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

header p.subtitle {
  font-size: 1.1rem;
  color: var(--secondary-text);
}

.card {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}

.card h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
  color: var(--primary-text);
}

.card p {
  font-size: 1rem;
  color: #3a3a3c;
}

.alert-box {
  background-color: var(--warning-bg);
  border-left: 4px solid var(--warning-border);
  border-radius: 8px;
  padding: 14px 16px;
  margin-top: 12px;
}

.alert-box p {
  color: #c0392b;
  font-weight: 500;
}

.divider {
  border: 0;
  height: 1px;
  background: #e5e5ea;
  margin: 40px 0;
}

@media (max-width: 480px) {
  body {
    padding: 20px 12px;
  }
  .card {
    padding: 18px;
  }
  header h1 {
    font-size: 1.6rem;
  }
}