:root {
    --primary: #00a651;
    --primary-dark: #008f45;
    --bg-light: #f8f9fa;
    --text-dark: #333;
    --white: #ffffff;
    --border-radius: 8px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    margin: 0;
    padding: 0;
}

.navbar {
    background-color: var(--white);
    border-bottom: 1px solid #e5e5e5;
    padding: 15px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo {
    font-size: 20px;
    font-weight: bold;
    color: var(--primary);
    text-decoration: none;
}

.user-welcome {
    margin-right: 20px;
    font-size: 14px;
}

.btn-logout {
    background-color: #dc3545;
    color: var(--white);
    padding: 8px 16px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 14px;
}

.container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
    min-height: 75vh;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

.card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border-top: 4px solid var(--primary);
}

.card h3 {
    margin-top: 0;
    color: #222;
}

.main-footer {
    text-align: center;
    padding: 20px;
    background: #e9ecef;
    font-size: 13px;
    color: #6c757d;
    margin-top: 40px;
}