body{
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    background-color: #f5f7fa;
}
.contenedor{
    display: flex;
    height: 100vh;
}
.menu{
    width: 200px;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 20px;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.15);
}
.menu h2{
    margin-top: 0;
    font-size: 1.5em;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    padding-bottom: 15px;
}
.menu li{
    padding: 12px;
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.3s ease;
    margin-bottom: 5px;
}
.menu ul{
    list-style: none;
    padding: 0;
}
.menu li:hover{
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateX(5px);
}
.contenido{
    flex: 1;
    padding: 30px;
    background-color: #ffffff;
    overflow-y: auto;
}
.contenido h1, .contenido h2{
    color: #1e3c72;
    margin-top: 0;
}
table{
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    overflow: hidden;
}
th, td{
    border: 1px solid #e0e6ed;
    padding: 12px;
    text-align: left;
}
th{
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    font-weight: 600;
}
tr:nth-child(even){
    background-color: #f8fafc;
}
tr:hover{
    background-color: #e8f0f7;
}
button{
    padding: 8px 16px;
    
    background: linear-gradient(to right, blue, purple);
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s ease;
    font-weight: 500;
}
button:hover{
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30, 60, 114, 0.3);
}
input{
    padding: 8px 12px;
    margin-right: 10px;
    border: 1px solid #d0d8e0;
    border-radius: 4px;
    font-family: inherit;
    transition: border-color 0.3s ease;
}
input:focus{
    outline: none;
    border-color: #2a5298;
    box-shadow: 0 0 0 3px rgba(42, 82, 152, 0.1);
}
hr{
    border: none;
    border-top: 2px solid #e0e6ed;
    margin: 20px 0;
}