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

body {
    background: #f5f7fa;
}

/* Login Page */
.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 30px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.login-container input {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.login-container button {
    width: 100%;
    padding: 12px;
    background: #2c3e50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

/* Dashboard Layout */
.dashboard {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: #2c3e50;
    color: white;
    padding: 20px;
}

.sidebar h2 {
    margin-bottom: 30px;
    color: #ecf0f1;
}

.sidebar ul {
    list-style: none;
}

.sidebar li {
    padding: 15px;
    margin: 5px 0;
    border-radius: 5px;
}

.sidebar li.active {
    background: #34495e;
}

.sidebar a {
    color: #bdc3c7;
    text-decoration: none;
    display: flex;
    align-items: center;
}

.sidebar i {
    margin-right: 10px;
    width: 20px;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 20px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid #eee;
}

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

.card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    text-align: center;
}

.card i {
    font-size: 40px;
    color: #3498db;
    margin-bottom: 15px;
}

/* Tables */
.table-section {
    background: white;
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .dashboard {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
    }
    
    .cards {
        grid-template-columns: 1fr;
    }
}