@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

:root {
    --sidebar-width: 240px;
    --sidebar-bg: #ffffff;
    --main-bg: #f8f9fa;
    --border-color: #dee2e6;
    --text-main: #212529;
    --accent: #0d6efd;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--main-bg);
    color: var(--text-main);
    overflow-x: hidden;
}

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

#sidebar {
    min-width: var(--sidebar-width);
    max-width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    transition: all 0.3s;
    height: 100vh;
    position: sticky;
    top: 0;
}

#content {
    width: 100%;
    padding: 20px;
    min-height: 100vh;
}

/* Sidebar Styling */
.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 1.1rem;
}

.sidebar-menu {
    padding: 10px 0;
}

.sidebar-menu a {
    padding: 10px 20px;
    display: block;
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.9rem;
    transition: background 0.2s;
}

.sidebar-menu a:hover, .sidebar-menu a.active {
    background: #f0f2f5;
    color: var(--accent);
}

.sidebar-menu a i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

/* Dashboard Cards */
.card {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: none;
    margin-bottom: 20px;
}

.card-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    font-weight: 500;
    padding: 12px 15px;
}

/* Utilities */
.btn {
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.875rem;
    padding: 8px 16px;
}

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

.btn-primary:hover {
    background-color: #000;
    border-color: #000;
}

@media (max-width: 768px) {
    #sidebar {
        margin-left: calc(-1 * var(--sidebar-width));
    }
    #sidebar.active {
        margin-left: 0;
    }
}