:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --background-color: #f4f7f6;
    --text-color: #2c3e50;
    --border-radius: 12px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.main-navigation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: white;
    box-shadow: var(--box-shadow);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px 0;
    z-index: 1000;
}

.main-navigation .nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-color);
    margin: 0 15px;
    transition: all 0.3s ease;
    opacity: 0.7;
}

.main-navigation .nav-item:hover,
.main-navigation .nav-item.active {
    opacity: 1;
    color: var(--primary-color);
}

.main-navigation .nav-item i {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.main-navigation .nav-item span {
    font-size: 0.8rem;
    font-weight: 500;
}

.dashboard-container {
    max-width: 1200px;
    margin: 100px auto 0;
    padding: 30px;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.dashboard-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    background-color: var(--background-color);
    color: var(--text-color);
    padding: 30px;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    text-align: center;
}

.dashboard-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    background-color: white;
}

.dashboard-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.dashboard-item span {
    font-weight: 600;
}

.container, 
.settings-container, 
.new-product-container {
    max-width: 1200px;
    margin: 100px auto 0;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 30px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group input, 
.form-group select {
    padding: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-group input:focus, 
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.submit-btn, 
.cancel-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn {
    background-color: var(--primary-color);
    color: white;
}

.submit-btn:hover {
    background-color: #2980b9;
}

.cancel-btn {
    background-color: #e74c3c;
    color: white;
}

.cancel-btn:hover {
    background-color: #c0392b;
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: var(--border-radius);
    overflow: hidden;
}

table th {
    background-color: var(--primary-color);
    color: white;
    padding: 15px;
    text-align: left;
}

table td {
    padding: 15px;
    border-bottom: 1px solid #f1f3f5;
}

table tr:last-child td {
    border-bottom: none;
}

@media (max-width: 768px) {
    .main-navigation .nav-item span {
        display: none;
    }
}