/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700&display=swap');

/* Root and Variable Definitions */
:root {
    --sidebar-width-collapsed: 60px;
    --sidebar-width-expanded: 280px;
    --max-container-width: 1200px;
    --primary-color: #007BFF;
    --primary-color-hover: #0066cc;
    --light-grey: #F8F9FA;
    --dark-grey: #343A40;
    --white: #FFFFFF;
    --box-shadow-color: rgba(0, 0, 0, 0.1);
    --box-shadow-hover-color: rgba(0, 0, 0, 0.15);
}

/* Body and Global Styles */
body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    background: var(--light-grey);
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar Styles */
.sidebar {
    display: flex;
    flex-direction: column;
    background: var(--white);
    width: var(--sidebar-width-collapsed);
    height: 100%;
    transition: width 0.3s ease;
    box-shadow: 2px 0 5px var(--box-shadow-color);
    overflow: hidden;
    z-index: 20;
}

.sidebar:hover, .sidebar.sidebar-expanded {
    width: var(--sidebar-width-expanded);
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    color: var(--dark-grey);
    font-size: 16px;
    transition: background-color 0.3s, padding-left 0.3s;
    cursor: pointer;
    overflow: hidden;
}

.menu-item:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.menu-icon {
    margin-right: 10px;
    transition: transform 0.3s ease;
}

.sidebar:hover .menu-icon, .sidebar.sidebar-expanded .menu-icon {
    transform: rotate(360deg);
}

.menu-label {
    white-space: nowrap;
    overflow: hidden;
    transition: opacity 0.3s ease, width 0.3s ease;
    display: none;
}

.sidebar:hover .menu-label, .sidebar.sidebar-expanded .menu-label {
    display: inline;
}

@media (min-width: 1200px) {
    .container {
        max-width: var(--max-container-width);
        margin: auto;
        padding: 20px 40px;
    }

    .card-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
}

/* Responsive Design for Smaller Screens */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        width: var(--sidebar-width-collapsed);
    }

    .sidebar-expanded {
        width: 200px;
    }

    .container {
        margin-left: var(--sidebar-width-collapsed);
        width: calc(100% - var(--sidebar-width-collapsed));
    }

    .sidebar-expanded + .container {
        margin-left: 200px;
        width: calc(100% - 200px);
    }

    .card-grid {
        grid-template-columns: 1fr;
    }
}

/* Main Content Styles */
.container {
    margin-left: var(--sidebar-width-collapsed);
    transition: margin-left 0.3s ease;
    padding: 20px;
    width: calc(100% - var(--sidebar-width-collapsed));
    overflow-y: auto;
    overflow-x: hidden;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    padding: 20px;
}

.card {
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 4px 8px var(--box-shadow-color);
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px;
    cursor: pointer;
    user-select: none;
}

.card:hover {
    box-shadow: 0 6px 12px var(--box-shadow-hover-color);
    transform: translateY(-5px);
}

.card-icon {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.card-content {
    display: flex;
    flex-direction: column;
}

.card-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 5px;
}

.card-description {
    font-size: 14px;
    color: var(--dark-grey);
}

.card-container {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

/* Table Styles */
.card table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

.card th, .card td {
    border: 1px solid #ddd;
    padding: 8px;
    word-wrap: break-word;
}

/* Form and Button Styles */
input, .button {
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
    width: calc(100% - 24px);
}

.button {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

.button:hover {
    background-color: var(--primary-color-hover);
}

.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.login-window {
    background-color: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.tab-group {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    border-bottom: 2px solid #ccc;
}

.tab-group li {
    flex: 1;
    text-align: center;
    margin-bottom: -1px;
}

.tab-group li a {
    display: block;
    padding: 15px;
    background: #eee;
    color: #333;
    text-decoration: none;
    transition: background-color 0.3s, color 0.3s;
}

.tab-group li a:hover {
    background-color: #ddd;
}

.tab-group .active a {
    background: #fff;
    border-bottom: 2px solid white;
}

.tab-content {
    background: #fff;
    padding: 20px;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}