* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    /* font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; */
    font-family: 'Inter', system-ui, sans-serif;
}

:root {
    --primary-color: #ffc000;
    --secondary-color: #a47b00;
    --dark-bg: #2d2d2d;
    --light-text: #ffffff;
}

body {
    background-color: #f5f6fa;
    min-height: 100vh;
}

.container {
    display: grid;
    grid-template-columns: 250px 1fr;
    min-height: 100vh;
}

.sidebar {
    background-color: var(--dark-bg);
    padding: 20px;
    color: var(--light-text);
}

.checkbox {
    width: 24px;
    height: 24px;
    accent-color: var(--primary-color);
    cursor: pointer;
    border-radius: 4px;
    transition: accent-color 0.2s ease, transform 0.2s ease;
    appearance: none;
    -webkit-appearance: none;
    background-color: #fff;
    border: 2px solid var(--primary-color);
    display: inline-block;
    position: relative;
}

.checkbox:checked {
    background-color: var(--primary-color);
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='20 6 9 17 4 12' /%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
}

.checkbox:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}


.logo {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 40px;
    color: var(--primary-color);
}

.nav-menu {
    list-style: none;
}

.nav-item {
    padding: 12px;
    margin: 8px 0;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.3s;
}

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

/* Main Content Styles */
.main-content {
    padding: 30px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.stat-value {
    font-size: 32px;
    font-weight: bold;
    color: var(--primary-color);
}

.chart-container {
    background: white;
    padding: 20px;
    border-radius: 12px;
    margin-top: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.recent-activity {
    margin-top: 30px;
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.chart-container canvas {
    max-height: 300px;
    max-width: 90%;
}