body {
    font-family: 'Arial', sans-serif;
    background-color: #f9f9f9;
    margin: 0;
    padding: 0;
    height: 180vh;
}

header {
    background-color: #7f00ff;
    color: #fff;
    padding: 1em;
    text-align: center;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    background-color: #ffffff;
    padding: 10px;
    margin: 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

nav li {
    margin: 0 10px;
}

nav a {
    text-decoration: none;
    color: #7f00ff;
    font-weight: bold;
}

main {
    max-width: 100%;
    margin: 2em auto;
    padding: 2em;
    height: 150vh;
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

.btn {
    display: inline-block;
    margin-top: 20px;
    background: #7f00ff;
    color: white;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
}

.report-card {
    cursor: pointer;
    border: 1px solid #ddd;
    border-radius: 10px;
    padding: 1em;
    margin-bottom: 1.5em;
    transition: box-shadow 0.3s ease;
}

.report-card:hover {
    box-shadow: 0 0 10px rgba(127, 0, 255, 0.2);
}

.cards {
    display: flex;
    flex-direction: column;
    gap: 1em;
}

.card {
    background-color: #f2f2f2;
    padding: 1em;
    border-radius: 10px;
}

.chart-container {
    margin-top: 2em;
    height: 400px;
    max-width: 100%;
}

.section-title {
    color: #7f00ff;
}

footer {
    background: linear-gradient(to right, #ff6666, #ff3333);
    color: #fff;
    text-align: center;
    padding: 0.5em 0;
    position: fixed;
    bottom: 0;
    width: 100%;
}