/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header styles */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.logo h1 {
    font-size: 24px;
    color: #4a90e2;
}

.main-nav ul {
    display: flex;
    list-style: none;
}

.main-nav li {
    margin: 0 10px;
}

.main-nav a {
    text-decoration: none;
    color: #333;
    font-weight: bold;
}

.main-nav a:hover {
    color: #4a90e2;
}

.user-menu {
    display: flex;
    align-items: center;
}

.user-menu span {
    margin-right: 10px;
    font-weight: bold;
}

/* Button styles */
.btn {
    display: inline-block;
    padding: 8px 16px;
    background-color: #4a90e2;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    font-size: 14px;
}

.btn:hover {
    background-color: #3a80d2;
}

.btn-small {
    padding: 5px 10px;
    font-size: 12px;
}

.btn-primary {
    background-color: #4a90e2;
}

/* Dashboard styles */
.dashboard {
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 20px;
    margin: 20px 0;
}

.dashboard-widgets {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.widget {
    background-color: #f9f9f9;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Low stock widget styles */
.low-stock-list {
    list-style: none;
    padding: 0;
    margin: 10px 0 0 0;
}

.low-stock-list li {
    display: flex;
    justify-content: space-between;
    padding: 8px 10px;
    margin-bottom: 5px;
    border-radius: 4px;
    background-color: #f8f9fa;
    border-left: 3px solid #f8f9fa;
}

.low-stock-list li.stock-warning {
    border-left-color: #f0ad4e;
    background-color: #fff9ef;
}

.low-stock-list li.stock-critical {
    border-left-color: #d9534f;
    background-color: #fff5f5;
}

.low-stock-list .item-name {
    font-weight: bold;
}

.low-stock-list .item-quantity {
    color: #666;
    font-size: 0.9em;
}

/* Footer styles */
.main-footer {
    background-color: #fff;
    padding: 15px 0;
    margin-top: 20px;
    text-align: center;
    box-shadow: 0 -2px 5px rgba(0,0,0,0.1);
}

/* Login page styles */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f5f5f5;
}

.login-container {
    width: 350px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 30px;
}

.login-header {
    text-align: center;
    margin-bottom: 20px;
}

.login-form .form-group {
    margin-bottom: 15px;
}

.login-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.login-form input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.error-message {
    background-color: #ffebee;
    color: #c62828;
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 15px;
}