* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
body {
    background-color: #f4f7f6;
    color: #333;
}
#header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
#container {
    display: flex;
    max-width: 1200px;
    margin: 1rem auto;
    gap: 2rem;
    padding: 0 1rem;
    height: 85vh;
}
#displaypage {
    flex: 1;
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    border-top: 8px solid #3498db;
    overflow-y: auto;
}
#displaypage section {
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #eee;
}
#inputfields {
    flex: 1;
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}
#headSection {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #2c3e50;
    border-left: 4px solid #3498db;
    padding-left: 10px;
}
#inputlists {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}
#inputlists input {
    padding: 0.3rem 0.8rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}
#inputlists input:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 5px rgba(52, 152, 219, 0.3);
}
button {
    cursor: pointer;
    border: none;
    border-radius: 4px;
    transition: all 0.3s ease;
    font-weight: 600;
}
#ok {
    position: relative;
    left: 2.5rem;
    width: 80%;
    padding: 0.8rem;
    background-color: #27ae60;
    color: white;
    margin-bottom: 1rem;
}
#ok:hover {
    background-color: #219150;
}
#buttons {
    display: flex;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 1rem;
}
#prev, #next {
    padding: 0.6rem 1.5rem;
    background-color: #3498db;
    color: white;
}
#prev:hover, #next:hover {
    background-color: #2980b9;
}