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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    overflow: hidden;
    padding: 30px;
}

.header {
    text-align: center;
    border-bottom: 2px solid #667eea;
    padding-bottom: 20px;
    margin-bottom: 30px;
}

.header h1 {
    color: #333;
    margin-bottom: 10px;
}

.header p {
    color: #666;
    font-size: 14px;
}

.form-group {
    margin-bottom: 25px;
}

label {
    display: block;
    font-weight: bold;
    margin-bottom: 8px;
    color: #333;
}

label.required:after {
    content: " *";
    color: red;
}

input[type="text"],
input[type="date"],
input[type="file"],
input[type="password"] {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: border 0.3s;
}

input:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s;
}

.btn:hover {
    background: #5a67d8;
}

.btn-danger {
    background: #e53e3e;
}

.btn-danger:hover {
    background: #c53030;
}

.btn-success {
    background: #48bb78;
}

.btn-success:hover {
    background: #38a169;
}

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

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

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

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

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

table th {
    background: #667eea;
    color: white;
}

table tr:hover {
    background: #f5f5f5;
}

.navbar {
    background: #333;
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 8px;
}

.navbar a {
    color: white;
    text-decoration: none;
    margin-right: 20px;
    padding: 5px 10px;
}

.navbar a:hover {
    background: #667eea;
    border-radius: 5px;
}

.admin-container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    padding: 30px;
}

.badge {
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 12px;
    font-weight: bold;
}

.badge-pending {
    background: #ffc107;
    color: #856404;
}

.badge-valid {
    background: #28a745;
    color: white;
}

.badge-invalid {
    background: #dc3545;
    color: white;
}