body, html {
    font-family: 'Roboto', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #8EC5FC, #E0C3FC);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.container {
    flex: 1;
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
    width: 100%;
    box-sizing: border-box;
}

main {
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

h1 {
    color: #333;
    text-align: center;
    margin-bottom: 40px;
    font-size: 2.5em;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.reports-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.report-card {
    background-color: #fff;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.report-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
    border-color: #4CAF50;
}

.report-card i {
    font-size: 60px;
    color: #4CAF50;
    margin-bottom: 20px;
}

.report-card h2 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.5em;
}

.view-btn, .export-btn, #filter-btn, #export-filtered-btn {
    padding: 12px 20px;
    margin: 10px 5px;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.view-btn, #filter-btn {
    background-color: #4CAF50;
    color: white;
}

.export-btn, #export-filtered-btn {
    background-color: #2196F3;
    color: white;
}

.view-btn:hover, .export-btn:hover, #filter-btn:hover, #export-filtered-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.6);
}

.modal-content {
    background-color: #fefefe;
    margin: 10% auto;
    padding: 40px;
    border: none;
    width: 90%;
    max-width: 800px;
    border-radius: 20px;
    box-shadow: 0 15px 50px rgba(0,0,0,0.1);
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover,
.close:focus {
    color: #000;
}

.date-filter {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
    background-color: #f5f5f5;
    padding: 20px;
    border-radius: 10px;
}

.date-filter label {
    font-weight: bold;
    color: #333;
}

.date-filter input[type="date"] {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

#report-content {
    margin-top: 30px;
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

/* Estilos adicionales para el header */
.left-section, .right-section {
    display: flex;
    align-items: center;
}

.logo-container {
    width: 80px;
    height: 80px;
    overflow: hidden;
    border-radius: 50%;
    background-color: #FFEB3B;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
    margin-right: 20px;
}

.logo-container:hover {
    transform: scale(1.1);
}

.logo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

nav ul {
    display: flex;
    list-style-type: none;
    padding: 0;
    margin: 0;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    color: #333;
    text-decoration: none;
    font-weight: bold;
    font-size: 16px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    padding: 10px 15px;
    border-radius: 50px;
}

nav ul li a:hover {
    color: #FF0000;
    background-color: rgba(255, 255, 255, 0.1);
}

nav ul li a i {
    margin-right: 8px;
    font-size: 18px;
}

.bell-icon {
    font-size: 24px;
    color: #333;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 10px;
    border-radius: 50%;
}

.bell-icon:hover {
    color: #FF0000;
    background-color: rgba(255, 255, 255, 0.1);
}

/* Responsive design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .left-section, .right-section {
        margin: 10px 0;
    }

    nav ul {
        flex-direction: column;
    }

    nav ul li {
        margin: 10px 0;
    }

    .date-filter {
        flex-direction: column;
        align-items: stretch;
    }
}