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

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    width: 100%;
    max-width: 1200px;
    margin: 20px auto;
}

.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    font-size: 24px;
}

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

.header .user-info i {
    margin-right: 10px;
    font-size: 20px;
}

.body {
    padding: 30px;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    text-decoration: none;
    margin: 5px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.btn-danger {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(245, 87, 108, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.btn-success:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(79, 172, 254, 0.3);
}

.table-container {
    overflow-x: auto;
    margin-top: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table th, table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #e1e5eb;
}

table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #495057;
}

table tr:hover {
    background-color: #f8f9fa;
}

.form-group {
    margin-bottom: 20px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e5eb;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    padding: 20px;
    margin-bottom: 20px;
}

.card-header {
    border-bottom: 1px solid #e1e5eb;
    padding-bottom: 10px;
    margin-bottom: 15px;
    font-weight: 600;
    font-size: 18px;
    color: #495057;
}

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

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        text-align: center;
    }
    
    .header .user-info {
        margin-top: 10px;
    }
    
    .body {
        padding: 20px;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
}