/* Estilos generales */
body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.container {
    width: 80%;
    margin: auto;
    overflow: hidden;
    padding: 0 20px;
}

/* Header */
header {
    background: #35424a;
    color: #ffffff;
    padding-top: 30px;
    min-height: 70px;
    border-bottom: #e8491d 3px solid;
}

header a {
    color: #ffffff;
    text-decoration: none;
    text-transform: uppercase;
    font-size: 16px;
}

header ul {
    padding: 0;
    margin: 0;
    list-style: none;
    overflow: hidden;
}

header li {
    float: left;
    display: inline;
    padding: 0 20px 0 20px;
}

header #branding {
    float: left;
}

header #branding h1 {
    margin: 0;
}

header nav {
    float: right;
    margin-top: 10px;
}

header .highlight, header .current a {
    color: #e8491d;
    font-weight: bold;
}

header a:hover {
    color: #ffffff;
    font-weight: bold;
}

/* Main content area */
main {
    padding: 20px 0;
}

h1, h2, h3 {
    color: #35424a;
}

/* Forms */
form {
    background: #ffffff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

form div {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
}

input[type="text"],
input[type="email"],
input[type="password"],
textarea,
select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button, .button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #e8491d;
    color: #ffffff;
    text-decoration: none;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover, .button:hover {
    background-color: #35424a;
}

/* Memory boxes and items lists */
.memory-box-list, .memory-item-list {
    list-style-type: none;
    padding: 0;
}

.memory-box-list li, .memory-item-list li {
    background: #fff;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.type {
    display: inline-block;
    padding: 5px 10px;
    background-color: #35424a;
    color: #ffffff;
    border-radius: 3px;
    font-size: 0.8em;
}

/* Error messages */
.error {
    color: #ff0000;
    background-color: #ffe6e6;
    border: 1px solid #ff0000;
    padding: 10px;
    margin-bottom: 20px;
    border-radius: 5px;
}

/* 404 page */
.error-page {
    text-align: center;
    padding: 50px 20px;
}

.error-page h1 {
    font-size: 48px;
    color: #e8491d;
}

.error-page p {
    font-size: 18px;
    margin-bottom: 20px;
}

/* Footer */
footer {
    padding: 20px;
    margin-top: 20px;
    color: #ffffff;
    background-color: #35424a;
    text-align: center;
}

/* Responsive design */
@media(max-width: 768px){
    header #branding,
    header nav,
    header nav li {
        float: none;
        text-align: center;
        width: 100%;
    }

    header {
        padding-bottom: 20px;
    }
}