/* ==========================================================================
   bimbômetro - Layout Minimalista Inspirado no Google Finance
   ========================================================================== */

:root {
  --bg-color: #f8f9fa;
  --surface-color: #ffffff;
  --text-primary: #202124;
  --text-secondary: #5f6368;
  --text-muted: #80868b;
  --border-color: #dadce0;
  --border-light: #edf0f2;
  
  --btc-color: #f7931a;
  --selic-color: #137333;
  
  --font-main: "Google Sans", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  
  --radius-md: 12px;
  --shadow-card: 0 1px 3px rgba(60, 64, 67, 0.08), 0 1px 2px rgba(60, 64, 67, 0.05);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.page-wrapper {
  max-width: 960px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

/* Header: Só Título e Subtítulo */
.main-header {
  margin-bottom: 32px;
}

.logo-title {
  font-size: 2.6rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.subtitle {
  font-size: 1.12rem;
  color: var(--text-secondary);
  max-width: 820px;
  line-height: 1.6;
}

/* Cartões dos Gráficos */
.charts-section {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-bottom: 36px;
}

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

.chart-card {
  padding: 24px 28px;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 22px;
}

.chart-title {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.chart-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Legendas no Topo do Gráfico */
.chart-legends {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.legend-item strong {
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.btc-dot {
  background-color: var(--btc-color);
}

.selic-dot {
  background-color: var(--selic-color);
}

/* Container do Canvas */
.canvas-container {
  position: relative;
  width: 100%;
  height: 380px;
}

/* Rodapé */
.main-footer {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

/* Responsividade */
@media (max-width: 680px) {
  .page-wrapper {
    padding: 24px 14px 40px;
  }

  .logo-title {
    font-size: 2rem;
  }

  .subtitle {
    font-size: 1rem;
  }

  .chart-card {
    padding: 16px 14px;
  }

  .canvas-container {
    height: 280px;
  }
}