* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f0f4f8, #d9e2ec);
    color: #333;
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

h1 {
    text-align: center;
    color: #2f4858;
    margin-bottom: 2rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

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

th {
    background-color: #f7f9fc;
    color: #2f4858;
}

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

.button {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: #2f4858;
    color: white;
    border: none;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    transition: background 0.3s ease;
    margin: 0.25rem;
}

.button:hover {
    background-color: #476072;
}

.button:disabled,
.button[disabled] {
    background-color: #aaa;
    cursor: not-allowed;
}

form {
    background-color: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

input, button {
    width: 100%;
    padding: 0.75rem;
    margin: 0.5rem 0;
    border-radius: 6px;
    border: 1px solid #ccc;
}

a.button-back {
    margin-top: 1rem;
    display: inline-block;
}