:root {
    --primary-color: #1a3c87; /* Navy Blue */
    --accent-color: #f4b53f; /* Gold/Yellow */
    --text-color: #ffffff; /* White */
    --hover-color: #f4b53f; /* Orange */
    --secondary-text: #d5f5a3; /* Light Green */
    --sidebar-bg: linear-gradient(180deg, #1a3c87 0%, #2a4c97 100%);
}

body {
    font-family: 'Arial', sans-serif;
    font-size: 0.75rem; /* 12px */
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    overflow-x: hidden;
}

.sidebar {
    width: 180px;
    min-height: 100vh;
    background: var(--sidebar-bg);
    color: var(--text-color);
    transition: width 0.3s ease, box-shadow 0.3s ease;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    box-shadow: 2px 0 6px rgba(0, 0, 0, 0.1);
}

.sidebar.collapsed {
    width: 50px;
}

.sidebar.collapsed .sidebar-title,
.sidebar.collapsed .nav-link span,
.sidebar.collapsed .sidebar-logo {
    display: none;
}

.sidebar.collapsed .nav-link i {
    font-size: 1rem; /* 16px */
    margin-right: 0;
}

.sidebar-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.75rem !important;
}

.sidebar-title {
    font-size: 1rem; /* 16px */
    font-weight: 600;
    margin: 0;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.sidebar-logo {
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    max-width: 30px;
}

.nav-link {
    padding: 8px 10px;
    border-radius: 4px;
    color: var(--text-color);
    font-size: 0.8rem; /* 12.8px */
    transition: background-color 0.3s, padding-left 0.3s, transform 0.2s;
    display: flex;
    align-items: center;
    font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
    background-color: var(--hover-color);
    color: var(--primary-color);
    padding-left: 14px;
    transform: translateX(3px);
}

.nav-link i {
    margin-right: 8px;
    font-size: 1rem; /* 16px */
    transition: transform 0.2s;
}

.nav-link:hover i {
    transform: scale(1.1);
}

.toggle-sidebar {
    transition: background-color 0.3s, transform 0.2s;
    border-radius: 50%;
    padding: 5px 8px;
    font-size: 0.8rem; /* 12.8px */
}

.toggle-sidebar:hover {
    background-color: var(--primary-color);
    color: var(--text-color);
    transform: rotate(90deg);
}

.main-content {
    margin-left: 180px;
    transition: margin-left 0.3s ease;
    padding: 0.75rem;
}

.sidebar.collapsed ~ .main-content {
    margin-left: 50px;
}

.table-dark {
    background-color: var(--primary-color);
    color: var(--text-color);
    font-size: 0.75rem; /* 12px */
}

.table {
    font-size: 0.75rem; /* 12px */
}

.btn {
    font-size: 0.8rem; /* 12.8px */
}

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

.card {
    border: none;
    border-radius: 4px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.1);
}

.card-body {
    padding: 0.5rem;
}

.card-title {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.875rem; /* 14px */
}

.form-label {
    font-size: 0.75rem; /* 12px */
}

.form-control {
    font-size: 0.75rem; /* 12px */
    padding: 0.3rem 0.5rem;
}

.input-group {
    margin-bottom: 0.5rem;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(244, 181, 63, 0.1);
}

.alert-danger {
    background-color: rgba(244, 181, 63, 0.2);
    border-color: var(--primary-color);
    color: var(--primary-color);
    font-size: 0.75rem; /* 12px */
    padding: 0.3rem;
}

.alert-success {
    background-color: rgba(213, 245, 163, 0.2);
    border-color: var(--secondary-text);
    color: var(--primary-color);
    font-size: 0.75rem; /* 12px */
    padding: 0.3rem;
}

canvas {
    max-height: 150px;
}

@media (max-width: 768px) {
    .sidebar {
        width: 50px;
    }
    .sidebar-title,
    .nav-link span,
    .sidebar-logo {
        display: none;
    }
    .nav-link i {
        font-size: 1rem; /* 16px */
        margin-right: 0;
    }
    .main-content {
        margin-left: 50px;
        padding: 0.3rem;
    }
    .sidebar.collapsed ~ .main-content {
        margin-left: 50px;
    }
    .card-body {
        padding: 0.3rem;
    }
    .form-control {
        padding: 0.2rem 0.4rem;
    }
}