:root {
    --primary-blue: #0066cc;
    --sidebar-blue: #004a99;
    --bg-light: #f0f7ff;
    --text-dark: #1a1a1a;
    --white-glass: rgba(255, 255, 255, 0.8);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: url('your-background-illustration.png') no-repeat center center fixed;
    background-size: cover;
    color: var(--text-dark);
}

.container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-blue);
    color: white;
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-item {
    background: none;
    border: none;
    color: white;
    text-align: left;
    padding: 12px;
    font-size: 1rem;
    cursor: pointer;
    border-radius: 8px;
    transition: 0.3s;
    width: 100%;
}

.nav-item:hover, .nav-item.active {
    background: rgba(255, 255, 255, 0.15);
}

/* Main Content Area */
.main-content {
    flex: 1;
    padding: 2rem;
    background: rgba(240, 247, 255, 0.6); /* Overall page overlay */
    backdrop-filter: blur(5px);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 1.2rem;
}

.profile-img {
    border-radius: 50%;
    border: 2px solid var(--primary-blue);
}

/* Card Styling with Opacity */
.card {
    background: var(--white-glass);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    margin-bottom: 1.5rem;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.card-header {
    background-color: var(--primary-blue);
    color: white;
    padding: 12px 20px;
}

.card-body {
    padding: 20px;
}

.meta {
    display: flex;
    gap: 20px;
    margin: 10px 0;
    font-size: 0.9rem;
    color: #555;
}

.btn-apply {
    background-color: var(--primary-blue);
    color: white;
    border: none;
    padding: 8px 24px;
    border-radius: 6px;
    cursor: pointer;
    float: right;
}

.btn-apply:hover {
    background-color: #0052a3;
}

.filter-options {
    padding: 20px;
    background: rgba(0, 102, 204, 0.05);
}

.checkboxes {
    margin-top: 10px;
    display: flex;
    gap: 15px;
}