body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f7fa;
  color: #333;
}

/* Header */
header {
  background: #1e88e5;
  color: white;
  padding: 1.5rem;
  text-align: center;
}



.header-text h1 {
  margin: 0;
  font-size: 2rem;
}

.header-text p {
  margin: 0.3rem 0 0;
}

/* Calculator card */
main {
  max-width: 650px;
  margin: auto;
  padding: 1.5rem;
}

.calculator {
  background: white;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
  margin-bottom: 2rem;
}

label {
  display: block;
  margin-top: 1rem;
  font-weight: bold;
}

input, select {
  width: 100%;
  padding: 0.8rem;
  margin-top: 0.4rem;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 1rem;
  box-sizing: border-box;
}

/* Tip results */
.tip-results {
  margin-top: 1.5rem;
}

.tip-results h2 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: #1e88e5;
}

.tip-results table {
  width: 100%;
  border-collapse: collapse;
}

.tip-results th {
  background-color: #1e88e5;
  color: white;
  padding: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tip-results td {
  border: 1px solid #ccc;
  padding: 8px;
  text-align: center;
  background-color: #f9f9f9;
}

.tip-results tr:nth-child(even) td {
  background-color: #f1f1f1;
}

.result {
  margin-top: 20px;
  font-size: 1.1em;
  font-weight: bold;
}

.highlight-result {
	background: #1e88e5;
	color: white;
}

/* Ads */
.ad-container {
  margin: 1.5rem 0;
  text-align: center;
  background: #e0e0e0;
  padding: 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  color: #666;
}

.faq-section h2 {
  color: #1e88e5;
}


/* Footer */
footer {
  background: #1e88e5;
  color: white;
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
}

/* Mobile */
@media (max-width: 600px) {
  header h1 {
    font-size: 1.6rem;
  }
  main {
    padding: 1rem;
  }
}