* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #111827, #1e3a8a, #7c3aed);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #222;
}

.box {
    width: 95%;
    max-width: 480px;
    background: #ffffff;
    padding: 35px;
    border-radius: 22px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}

.box.wide {
    max-width: 900px;
}

h1 {
    margin-top: 0;
    color: #1e3a8a;
    font-size: 36px;
}

p {
    color: #555;
    line-height: 1.6;
}

input,
textarea {
    width: 100%;
    padding: 15px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 12px;
    font-size: 16px;
}

textarea {
    height: 180px;
    resize: vertical;
}

button {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 17px;
    font-weight: bold;
    cursor: pointer;
}

button:hover {
    opacity: 0.9;
}

a {
    color: #2563eb;
    text-decoration: none;
    font-weight: bold;
}

.admin-link {
    display: inline-block;
    margin-top: 25px;
    font-size: 14px;
}

.error {
    color: red;
    font-weight: bold;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    font-size: 14px;
}

table th,
table td {
    padding: 12px;
    border: 1px solid #ddd;
}

table th {
    background: #f1f5f9;
}

@media(max-width: 600px) {
    .box {
        padding: 25px;
    }

    h1 {
        font-size: 30px;
    }
}