body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #333;
}

.container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    padding: 40px;
    max-width: 500px;
    width: 90%;
    text-align: center;
}

h1 {
    color: #4a5568;
    margin-bottom: 30px;
    font-size: 2.5em;
    font-weight: 300;
}

h2 {
    color: #4a5568;
    margin-bottom: 20px;
    font-size: 1.8em;
}

form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

input, select, textarea {
    padding: 15px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

a {
    display: inline-block;
    margin: 10px;
    padding: 12px 24px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

a:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.links {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    margin-top: 30px;
}

.message {
    background: #e6fffa;
    color: #234e52;
    padding: 15px;
    border-radius: 8px;
    margin: 20px 0;
    border-left: 4px solid #38b2ac;
}

.error {
    background: #fed7d7;
    color: #742a2a;
    padding: 15px;
    border-radius: 8px;
    margin: 20px 0;
    border-left: 4px solid #e53e3e;
}

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

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

th {
    background: #f7fafc;
    font-weight: 600;
    color: #4a5568;
}

@media (max-width: 600px) {
    .container {
        padding: 20px;
        margin: 20px;
    }

    h1 {
        font-size: 2em;
    }
}