:root {
    --primary-color: #4a6bff;
    --secondary-color: #2c3e50;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --success-color: #2ecc71;
}

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

body {
    background-color: #f5f5f5;
    color: #333;
}

.app-container {
    display: grid;
    grid-template-areas:
        "header header"
        "nav main"
        "nav footer";
    grid-template-columns: 250px 1fr;
    grid-template-rows: auto 1fr auto;
    min-height: 100vh;
}

.app-header {
    grid-area: header;
    background-color: var(--dark-color);
    color: white;
    padding: 1rem;
    text-align: center;
}

.main-nav {
    grid-area: nav;
    background-color: var(--secondary-color);
    color: white;
    transition: all 0.3s ease;
}

.nav-menu {
    list-style: none;
}

.nav-item {
    padding: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-item.active {
    background-color: var(--primary-color);
}

.app-content {
    grid-area: main;
    padding: 2rem;
    background-color: white;
    border-radius: 8px;
    margin: 1rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.app-sidebar {
    grid-area: nav;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1rem;
}

.connection-status {
    text-align: center;
    margin-bottom: 2rem;
}

.circle-loader {
    width: 100px;
    height: 100px;
    margin: 0 auto 1rem;
    position: relative;
    border: 5px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    border-top-color: var(--success-color);
    animation: spin 1s linear infinite;
    display: none;
}

.circle-progress {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.2rem;
    font-weight: bold;
}

.connect-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s;
    width: 100%;
}

.connect-btn:hover {
    background-color: #3a5bed;
}

.admin-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s;
    width: 100%;
}

.admin-btn:hover {
    background-color: #d62c1a;
}

.app-footer {
    grid-area: footer;
    background-color: var(--dark-color);
    color: white;
    text-align: center;
    padding: 1rem;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .app-container {
        grid-template-areas:
            "header"
            "nav"
            "main"
            "footer";
        grid-template-columns: 1fr;
    }
    
    .main-nav {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        display: flex;
        justify-content: space-around;
    }
    
    .nav-menu {
        display: flex;
        width: 100%;
    }
    
    .nav-item {
        flex: 1;
        text-align: center;
        border-bottom: none;
        border-right: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-item:last-child {
        border-right: none;
    }
    
    .app-sidebar {
        display: none;
    }
    
    .nav-toggle {
        display: none;
    }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Page specific styles */
.page {
    display: none;
}

.page.active {
    display: block;
}

.server-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.server-card {
    background-color: var(--light-color);
    padding: 1rem;
    border-radius: 8px;
    transition: transform 0.3s;
}

.server-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.server-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.server-status {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 5px;
}

.status-online {
    background-color: var(--success-color);
}

.status-offline {
    background-color: var(--accent-color);
      }