@import url('https://fonts.googleapis.com');

:root {
  --bg-app: #0a0a0a;
  --panel-bg: #161616;
  --accent: #3b82f6;
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --border: rgba(255, 255, 255, 0.06);
  --btn-hover: #27272a;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-app);
  color: var(--text-primary);
  margin: 0;
  display: flex;
  justify-content: center;
  gap: 32px;
  align-items: flex-start;
  min-height: 100vh;
  padding-top: 60px;
}

/* Container Principal da Calculadora */
#geral {
  background-color: var(--panel-bg);
  padding: 24px;
  border-radius: 24px;
  border: 1px solid var(--border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  width: 320px;
}

#geral h1 {
  margin-bottom: 20px;
  font-size: 1.1rem;
  font-weight: 600;
  text-align: left;
  color: var(--text-secondary);
  letter-spacing: -0.5px;
}

/* Visor com fonte Mono (estilo código) */
#visor {
  background-color: rgba(0, 0, 0, 0.3);
  color: #fff;
  font-family: 'JetBrains Mono', monospace;
  font-size: 2.5rem;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 12px;
  min-height: 80px;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  border: 1px solid var(--border);
}

/* Grade de Botões Profissional */
#botoes {
  width: 100%;
  border-spacing: 8px;
  border-collapse: separate;
}

#botoes td {
  padding: 18px;
  background-color: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  border-radius: 12px;
  text-align: center;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid var(--border);
}

#botoes td:hover {
  background-color: var(--btn-hover);
  transform: translateY(-2px);
  border-color: var(--text-secondary);
}

#botoes td:active {
  transform: translateY(0);
  background-color: var(--accent);
}

/* Histórico Lateral */
#historico1 {
  background-color: var(--panel-bg);
  padding: 24px;
  border-radius: 24px;
  border: 1px solid var(--border);
  width: 380px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

#historico1 h3 {
  margin-bottom: 20px;
  font-size: 1rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

#TabelaHistorico {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0 8px;
}

#TabelaHistorico th {
  background-color: transparent;
  color: var(--text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  padding: 12px;
  border: none;
  border-bottom: 1px solid var(--border);
}

#TabelaHistorico td {
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  padding: 12px;
  color: var(--text-primary);
}

#TabelaHistorico tr td:first-child { border-radius: 8px 0 0 8px; }
#TabelaHistorico tr td:last-child { border-radius: 0 8px 8px 0; }

#TabelaHistorico tr:hover td {
  background-color: rgba(59, 130, 246, 0.1);
  border-color: var(--accent);
}

/* Responsividade */
@media (max-width: 768px) {
  body {
    flex-direction: column;
    align-items: center;
    padding: 20px;
  }
  #historico1 { width: 320px; }
}