:root {
    --primary-bg: #f0f4f8;
    --sidebar-bg: linear-gradient(135deg, #27ae60 0%, #1e8449 100%);
    --card-bg: rgba(255, 255, 255, 0.95);
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --accent-green: #27ae60;
    --accent-red: #e74c3c;
    --accent-yellow: #f1c40f;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --glass: rgba(255, 255, 255, 0.25);
    --blur: blur(10px);
}

body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--primary-bg);
    color: var(--text-primary);
    overflow-x: hidden;
}

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

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 250px;
    height: 100vh;
    background: var(--sidebar-bg);
    padding: 2rem 0;
    z-index: 1000;
}

.sidebar .logo {
    text-align: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 2rem;
    padding: 0 1rem;
    background: linear-gradient(45deg, var(--accent-yellow), var(--accent-red));
    -webkit-background-clip: text;
    color: transparent;
}

.sidebar-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav li {
    margin: 0.5rem 0;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    border-radius: 0 20px 20px 0;
}

.sidebar-nav a:hover, 
.sidebar-nav a.active {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    transform: translateX(5px);
}

.sidebar-nav i {
    width: 20px;
    margin-right: 1rem;
}

/* Main Content */
.main-content-wrapper {
    margin-left: 250px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    padding: 1.5rem 2rem;
}

/* Topbar */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--glass);
    backdrop-filter: var(--blur);
    padding: 1rem 2rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.greeting {
    font-size: 1.5rem;
    font-weight: 600;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-green);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--card-bg);
    backdrop-filter: var(--blur);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: transform 0.2s ease;
    border-left: 4px solid var(--accent-green);
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-card h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.25rem;
}

.stat-card .stat-sub {
    font-size: 0.8rem;
    color: var(--accent-green);
}

.action-btn {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--accent-green);
    color: white;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.3s ease;
}

.action-btn:hover {
    background: #1e8449;
}

/* Metrics Section */
.metrics-section {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.metrics-card {
    background: var(--card-bg);
    backdrop-filter: var(--blur);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.metrics-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    border-bottom: 2px solid var(--accent-green);
}

.metric-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.metric-label {
    color: var(--text-secondary);
}

.metric-value {
    font-weight: bold;
}

/* Animations */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.stat-card, .metrics-card {
    animation: fadeInUp 0.6s ease-out;
}

/* Responsive */
@media (max-width: 992px) {
    .main-content-wrapper {
        margin-left: 0;
        padding: 1rem;
    }
    .sidebar {
        position: fixed;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 1100;
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .metrics-section {
        grid-template-columns: 1fr;
    }
}