:root {
    --primary-blue: #0d47a1;
    --dark-blue: #093170;
    --light-blue: #e3f2fd;
    --grey-bg: #f5f7fa;
    --sidebar-bg: #1e293b;
    --sidebar-text: #f8fafc;
    --sidebar-hover: #334155;
    --accent: #2563eb;
    --card-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    background-color: var(--grey-bg);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: #333;
}

#wrapper {
    display: flex;
    width: 100%;
    align-items: stretch;
}

#sidebar {
    min-width: 250px;
    max-width: 250px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    transition: all 0.3s;
    min-height: 100vh;
}

#sidebar .sidebar-header {
    padding: 20px;
    background: #1a252f;
}

#sidebar ul.components {
    padding: 20px 0;
}

#sidebar ul li a {
    padding: 12px 20px;
    font-size: 0.95rem;
    display: block;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: 0.3s;
}

#sidebar ul li a:hover {
    background: var(--sidebar-hover);
    color: #fff;
}

#sidebar ul li.active > a {
    background: var(--accent);
    color: #fff;
}

.sidebar-heading {
    padding: 10px 20px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #7f8c8d;
    margin-top: 10px;
}

#content {
    width: 100%;
    padding: 20px;
    transition: all 0.3s;
}

.navbar {
    padding: 15px 10px;
    background: #fff;
    border: none;
    border-bottom: 1px solid #e1e8ed;
    margin-bottom: 30px;
}

.card {
    border: none;
    border-radius: 10px;
    box-shadow: var(--card-shadow);
    margin-bottom: 20px;
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #f1f3f5;
    font-weight: 600;
}

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

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

.table thead {
    background-color: var(--light-blue);
}

.badge-status {
    font-weight: 500;
    padding: 5px 10px;
}

/* Animations */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}