body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    transition: background-color 0.3s, color 0.3s;
}

.light-theme {
    background-color: #f4f4f4;
    color: #333;
}

.dark-theme {
    background-color: #333;
    color: #f4f4f4;
}

.app {
    display: flex;
    flex-direction: row;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: #2c3e50;
    padding: 20px;
    color: white;
    transition: width 0.3s;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.hamburger {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
}

.sidebar-menu {
    list-style: none;
    padding: 0;
    margin: 20px 0 0;
}

.sidebar-menu a {
    color: white;
    text-decoration: none;
    display: block;
    padding: 10px;
}

.sidebar-menu a:hover {
    background-color: #34495e;
}

/* Main Content */
.main-content {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.controls {
    display: flex;
    gap: 10px;
}

.notification {
    position: relative;
    cursor: pointer;
}

#notification-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: red;
    color: white;
    border-radius: 50%;
    padding: 2px 5px;
    font-size: 12px;
}

.page {
    display: none;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: inherit;
}

.page.active {
    display: block;
}

.form-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

input, button, select {
    padding: 8px;
    border-radius: 4px;
    border: 1px solid #ccc;
    flex: 1;
    min-width: 120px;
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

#product-list, #alert-list, #transaction-list {
    margin-top: 10px;
}

canvas {
    max-width: 100%;
    height: auto;
}

/* Social Media Box */
.social-box {
    position: fixed;
    bottom: 20px;
    left: 20px;
    display: flex;
    gap: 15px;
    background-color: rgba(0, 0, 0, 0.8);
    padding: 10px;
    border-radius: 5px;
    z-index: 1000;
}

.social-box a {
    color: white;
    font-size: 24px;
    text-decoration: none;
}

.social-box a:hover {
    color: #007bff;
}

/* Responsive Design */
@media (max-width: 768px) {
    .app {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        padding: 10px;
        position: relative;
    }

    .sidebar-header h2 {
        margin: 0;
    }

    .hamburger {
        display: block;
    }

    .sidebar-menu {
        display: none;
        margin: 10px 0;
    }

    .sidebar-menu.active {
        display: block;
    }

    .main-content {
        padding: 10px;
    }

    header {
        flex-direction: column;
        align-items: flex-start;
    }

    .controls {
        margin-top: 10px;
    }

    .form-group {
        flex-direction: column;
    }

    input, button, select {
        width: 100%;
        min-width: unset;
    }

    .social-box {
        bottom: 10px;
        left: 10px;
        gap: 10px;
        padding: 5px;
    }

    .social-box a {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.2rem;
    }

    .sidebar {
        padding: 5px;
    }

    .sidebar-menu a {
        padding: 8px;
    }

    .social-box a {
        font-size: 18px;
    }
}