/* --- Advanced Aero Framework v2.0 --- */

:root {
    --glass-bg: rgba(255, 255, 255, 0.2);
    --glass-border: rgba(255, 255, 255, 0.4);
    --aero-blue: #00a2ff;
    --sidebar-width: 200px;
}

body {
    background: url('https://www.transparenttextures.com/patterns/cubes.png'), 
                linear-gradient(135deg, #1e90ff, #ffffff, #00ced1);
    background-attachment: fixed;
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
    overflow: hidden; /* Desktop feel */
    height: 100vh;
}

/* The Main Desktop Workspace */
#desktop {
    display: flex;
    height: 100vh;
    padding: 40px;
    box-sizing: border-box;
    justify-content: center;
    align-items: center;
}

/* Complex Window Structure */
.window-container {
    display: flex;
    width: 950px;
    height: 600px;
    background: var(--glass-bg);
    backdrop-filter: blur(25px) saturate(180%);
    -webkit-backdrop-filter: blur(25px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.3), inset 0 0 15px rgba(255,255,255,0.3);
    overflow: hidden;
    position: relative;
}

/* Left Navigation Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: rgba(255, 255, 255, 0.1);
    border-right: 1px solid var(--glass-border);
    padding: 20px 0;
}

.nav-item {
    padding: 12px 25px;
    color: #fff;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.4);
    cursor: pointer;
    transition: background 0.2s;
    font-size: 0.9em;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.2);
}

.nav-item.active {
    background: linear-gradient(to right, rgba(0, 162, 255, 0.5), transparent);
    border-left: 4px solid var(--aero-blue);
}

/* Main Content Area */
.main-view {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.top-bar {
    height: 40px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.6), rgba(255,255,255,0.1));
    display: flex;
    align-items: center;
    padding: 0 20px;
    justify-content: space-between;
}

.view-content {
    padding: 30px;
    overflow-y: auto;
    color: #111;
}

/* Advanced Components */
.stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 20px;
}

.stat-box {
    background: rgba(255, 255, 255, 0.4);
    border: 1px solid white;
    padding: 15px;
    border-radius: 8px;
    text-align: left;
}

.progress-bar {
    height: 8px;
    background: rgba(0,0,0,0.1);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #00dbde 0%, #fc00ff 100%);
    width: 75%; /* Example value */
}