/* 1. Definição de Variáveis (Padrão de Mercado) */
:root {
  --bg-dark: #0f172a; /* Azul marinho profundo */
  --card-bg: #1e293b; /* Fundo dos cards */
  --text-primary: #f8fafc; /* Branco suave */
  --text-secondary: #94a3b8; /* Cinza para legendas */
  --accent-color: #38bdf8; /* Azul neon para detalhes */
  --up-color: #22c55e; /* Verde para alta */
  --down-color: #ef4444; /* Vermelho para baixa */
}

/* 2. Reset e Estilo Global */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", sans-serif, system-ui;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* 3. Header e Footer */
header {
  text-align: center;
  padding: 40px 20px;
}

header h1 {
  font-size: 2.5rem;
  letter-spacing: -1px;
}

header h1 span {
  color: var(--accent-color);
  font-size: 1rem;
  font-weight: 300;
}

header p {
  color: var(--text-secondary);
  margin-top: 8px;
}

footer {
  margin-top: auto;
  padding: 20px;
  color: var(--text-secondary);
  font-size: 0.8rem;
}

/* 4. Container do Dashboard (Grid Responsivo) */
#dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  width: 90%;
  max-width: 1200px;
  padding: 20px;
}

/* 5. Estilo dos Cards (Onde o JS vai injetar os dados) */
.crypto-card {
  background-color: var(--card-bg);
  padding: 25px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition:
    transform 0.3s ease,
    border-color 0.3s ease;
  text-align: center;
}

.crypto-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-color);
}

.status-msg {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px;
  color: var(--accent-color);
  font-weight: bold;
}
.price-row {
  margin: 15px 0;
}
.price-brl {
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--accent-color);
}
.price-usd {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.85rem;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat span {
  color: var(--text-secondary);
  font-size: 0.7rem;
  text-transform: uppercase;
}