/* Sidebar styles */
     .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        width: 250px;
        background-color: #f8f9fa;
        padding: 20px;
        transition: all 0.3s ease;
        z-index: 1000;
        box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
        overflow-y: auto; /* Make sidebar scrollable */
        -webkit-overflow-scrolling: touch; /* Smooth scrolling on iOS */
    }

    .dark-mode .sidebar {
        background-color: #2c3e50;
        color: #ecf0f1;
    }

    .sidebar.collapsed {
        width: 70px;
        padding: 20px 10px;
    }

    .sidebar.collapsed .nav-link span,
    .sidebar.collapsed .sidebar-header h3,
    .sidebar.collapsed .dark-mode-toggle,
    .sidebar.collapsed .title {
        display: flex;
        font-size: 0.7rem;
        text-align:left;
        overflow:visible;
        white-space: wrap;
        justify-content: center;
        align-items: center;
    }
    
    body.mobile-view .sidebar .sidebar-header h3,
    body.mobile-view .sidebar .nav-link span,
    body.mobile-view .sidebar .title {
        display: flex;
        justify-content: center;
        align-items: center;
        font-size: 0.7rem;
    }

    .sidebar-toggle {
        position: absolute;
        top: 20px;
        right: 10px;
        width: 30px;
        height: 30px;
        background-color: #f8f9fa;
        border: 1px solid #e9ecef;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        z-index: 1001;
        transition: all 0.3s ease;
    }

    .dark-mode .sidebar-toggle {
        background-color: #2c3e50;
        border-color: #34495e;
        color: #ecf0f1;
    }

    .sidebar-toggle:hover {
        background-color: #e9ecef;
    }

    .dark-mode .sidebar-toggle:hover {
        background-color: #34495e;
    }

    .sidebar-header {
        padding: 20px 0;
        text-align: center;
        border-bottom: 1px solid #e9ecef;
        margin-bottom: 20px;
    }

    .dark-mode .sidebar-header {
        border-bottom-color: #34495e;
    }

    .nav-link {
        color: #495057;
        padding: 10px 15px;
        border-radius: 5px;
        margin-bottom: 5px;
        transition: all 0.3s ease;
    }

    .dark-mode .nav-link {
        color: #ecf0f1;
    }

    .nav-link:hover {
        background-color: #e9ecef;
        text-decoration: none;
    }

    .dark-mode .nav-link:hover {
        background-color: #34495e;
    }

    .nav-link.active {
        background-color: #2196F3;
        color: white;
    }

    .dark-mode .nav-link.active {
        background-color: #2980b9;
    }

    .main-content {
        margin-left: 250px;
        padding: 20px;
        transition: all 0.3s ease;
    }

    .main-content.expanded {
        margin-left: 60px;
    }

    .graph {
        margin: auto;
        padding: 10px;
        width: 100%;
        height: 70vh;
        position: relative;
    }

    .title {
        text-align: center;
        align-items: center;
        font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
        padding-top: 12px;
        padding-bottom: 12px;
    }

    /* Dark mode styles */
    .dark-mode {
        background-color: #121212;
        color: #fff;
    }

    /* Toggle switch styles */
    .toggle-switch {
        position: fixed;
        bottom: 20px;
        right: 20px;
        display: flex;
        align-items: center;
        z-index: 1000;
    }

    .switch {
        position: relative;
        display: inline-block;
        width: 60px;
        height: 34px;
        margin-left: 10px;
    }

    .switch input {
        opacity: 0;
        width: 0;
        height: 0;
    }

    .slider {
        position: absolute;
        cursor: pointer;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: #ccc;
        transition: 0.4s;
        border-radius: 34px;
    }

    .slider:before {
        position: absolute;
        content: "";
        height: 26px;
        width: 26px;
        left: 4px;
        bottom: 4px;
        background-color: white;
        transition: 0.4s;
        border-radius: 50%;
    }

    input:checked + .slider {
        background-color: #2196F3;
    }

    input:checked + .slider:before {
        transform: translateX(26px);
    }

    .time-range-buttons {
        position: relative;
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 20px;
    }

    .time-range-btn {
        padding: 8px 16px;
        border: 1px solid #e9ecef;
        border-radius: 4px;
        background-color: #f8f9fa;
        color: #495057;
        cursor: pointer;
        transition: all 0.3s ease;
        text-decoration: none;
    }

    .dark-mode .time-range-btn {
        background-color: #2c3e50;
        border-color: #34495e;
        color: #ecf0f1;
    }

    .time-range-btn:hover {
        background-color: #e9ecef;
        text-decoration: none;
    }

    .dark-mode .time-range-btn:hover {
        background-color: #34495e;
    }
    
    .time-controls-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        margin-bottom: 20px;
        padding: 0 15px;
    }
    
    .time-controls-container .time-range-buttons {
        margin-bottom: 0;
        flex: 1;
        justify-content: flex-start;
    }
    
    .time-controls-container .interval-form {
        margin: 0;
        min-width: 180px;
    }
    
    .interval-select {
        margin-left: 10px;
        padding: 4px;
        border: 1px solid #e9ecef;
        border-radius: 4px;
        background-color: #f8f9fa;
        color: #495057;
    }
    
    .dark-mode .interval-select {
        background-color: #2c3e50;
        border-color: #34495e;
        color: #ecf0f1;
    }

    .interval-form {
        display: flex;
        justify-content: center;
        align-items: center;
        margin-bottom: 15px;
        min-width: 160px;
        background-color: rgba(248, 249, 250, 0.7);
        padding: 5px 10px;
        border-radius: 4px;
        width: fit-content;
        margin: 0 auto 15px;
    }
    
    .dark-mode .interval-form {
        background-color: rgba(44, 62, 80, 0.7);
    }
    
    .interval-form input {
        width: 60px;
        padding: 5px;
        border: 1px solid #e9ecef;
        border-radius: 4px;
        background-color: #f8f9fa;
        color: #495057;
        text-align: center;
        margin-right: 5px;
    }
    
    .dark-mode .interval-form input {
        background-color: #2c3e50;
        border-color: #34495e;
        color: #ecf0f1;
    }
    
    /* Mobile responsive adjustments */
    @media (max-width: 900px) {
        .sidebar {
            width: 200px;
        }
        
        .main-content {
            margin-left: 200px;
            padding: 15px;
        }
        
        .main-content.expanded {
            margin-left: 60px;
        }
        
        .time-range-btn {
            padding: 6px 12px;
            font-size: 0.9rem;
        }
        
        .graph {
            height: 60vh;
        }
        body.mobile-view .sidebar .sidebar-header h3,
        body.mobile-view .sidebar .nav-link span,
        body.mobile-view .sidebar .title {
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 0.7rem;
        }
    }
    
    @media (max-width: 576px) {
        .sidebar {
            width: 180px;
        }
        
        .main-content {
            margin-left: 180px;
            padding: 10px;
        }
        
        .toggle-switch {
            bottom: 10px;
            right: 10px;
        }
        
        .time-range-buttons {
            margin-top: 10px;
        }
        
        .graph {
            height: 50vh;
            padding: 5px;
        }
        
        /* Auto-collapse sidebar on small screens */
        body.mobile-view .sidebar {
            width: 60px;
            padding: 20px 10px;
        }
        
        body.mobile-view .sidebar .sidebar-header h3,
        body.mobile-view .sidebar .nav-link span,
        body.mobile-view .sidebar .title {
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 0.7rem;
        }
        
        body.mobile-view .main-content {
            margin-left: 60px;
        }
    }
    
    /* Landscape mode improvements */
    @media (max-height: 500px) {
        .title {
            padding-top: 5px;
            padding-bottom: 5px;
        }
        
        .time-controls-container {
            margin-bottom: 10px;
        }
        
        .graph {
            height: 70vh;
            max-height: 300px;
        }
        
        .main-content {
            padding-top: 10px;
        }
        body.mobile-view .sidebar .sidebar-header h3,
        body.mobile-view .sidebar .nav-link span,
        body.mobile-view .sidebar .title {
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 0.7rem;
        }
    }