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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --receita: #10b981;
    --despesa: #ef4444;
    --background: #f8fafc;
    --card: #ffffff;
    --text: #1e293b;
    --border: #e2e8f0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
.header {
    background: var(--card);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.saldo-total {
    text-align: right;
}

.saldo-total span:first-child {
    display: block;
    color: var(--secondary);
    font-size: 0.9rem;
}

#saldo-valor {
    font-size: 1.5rem;
    font-weight: bold;
}

/* Cards */
.card {
    background: var(--card);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.card h3 {
    margin-bottom: 1rem;
    color: var(--primary);
    border-bottom: 2px solid var(--border);
    padding-bottom: 0.5rem;
}

/* Dashboard */
.dashboard {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

/* Responsivo */
@media (max-width: 768px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
    
    .header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}