body {
margin:0;
font-family:Arial, sans-serif;
background:#f4f6f9;
color:#1f2937;
line-height:1.6;
}

.container {
max-width:1000px;
margin:auto;
padding:20px;
}

.navbar {
background:#111827;
padding:15px 0;
}

.nav-container {
display:flex;
justify-content:space-between;
align-items:center;
max-width:1100px;
margin:auto;
padding:0 20px;
}

.logo {
color:white;
font-weight:bold;
}

.nav-links a {
color:white;
margin-left:20px;
text-decoration:none;
}

.hero {
background:linear-gradient(135deg,#1e3a8a,#2563eb);
color:white;
text-align:center;
padding:70px 20px;
}

.btn {
display:inline-block;
background:white;
color:#2563eb;
padding:12px 25px;
border-radius:6px;
text-decoration:none;
}

.calculator-card {
background:white;
padding:30px;
border-radius:12px;
box-shadow:0 8px 20px rgba(0,0,0,0.05);
margin-bottom:40px;
}

.form-group {
margin-bottom:15px;
}

input {
width:100%;
padding:8px;
margin-top:5px;
border-radius:6px;
border:1px solid #d1d5db;
}

button {
width:100%;
padding:12px;
background:#111827;
color:white;
border:none;
border-radius:6px;
margin-top:10px;
cursor:pointer;
}

.secondary-btn {
background:#6b7280;
}

.results {
margin-top:20px;
background:#f3f4f6;
padding:15px;
border-radius:8px;
}

.schedule-container {
overflow-x:auto;
margin-top:15px;
}

table {
width:100%;
border-collapse:collapse;
}

th, td {
border:1px solid #e5e7eb;
padding:8px;
text-align:center;
}

footer {
background:#111827;
color:white;
text-align:center;
padding:40px 20px;
}