body {
    font-family: Arial, sans-serif;
    background: #f4f6f9;
    padding: 20px;
}

h2 {
    color: #333;
    margin-bottom: 20px;
}

.filter-box {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.add-box {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 6px;
    overflow: hidden;
}

table th, table td {
    border: 1px solid #ddd;
    padding: 10px;
}

table th {
    background: #fafafa;
}

.button, .button2, .delete {
    padding: 6px 12px;
    text-decoration: none;
    border-radius: 5px;
    color: white;
    font-size: 14px;
}

.button {
    background: #1877f2;
}

.button2 {
    background: #666;
}

.delete {
    background: #d9534f;
}

.ok {
    color: green;
    font-weight: bold;
}

.off {
    color: red;
    font-weight: bold;
}
/* ===== Center Form Box ===== */
.center-box {
    max-width: 480px;
    margin: 60px auto;
    padding: 25px 30px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}

/* Center title */
.center-title {
    text-align: center;
    margin-bottom: 20px;
}

/* Input full width */
.center-box input[type="text"],
.center-box input[type="password"] {
    width: 100%;
    padding: 10px;
    margin: 6px 0 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
}

/* Buttons */
.center-box button,
.center-box input[type="submit"] {
    width: 100%;
    padding: 10px;
    background: #1877f2;
    border: none;
    color: white;
    border-radius: 6px;
    cursor: pointer;
}

.center-box button:hover,
.center-box input[type="submit"]:hover {
    background: #145fcc;
}

/* Back link */
.back-link {
    display: block;
    margin-top: 15px;
    text-align: center;
}
body {
    background: #f5f6f7;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

/* ===== Center Form Box ===== */
.center-box {
    max-width: 420px;
    margin: 80px auto;
    padding: 25px 30px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}

.center-title {
    text-align: center;
    margin-bottom: 20px;
}

.center-box input[type="text"],
.center-box input[type="password"] {
    width: 100%;
    padding: 10px;
    margin: 6px 0 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
}

.center-box input[type="submit"] {
    width: 100%;
    padding: 10px;
    background: #1877f2;
    border: none;
    color: white;
    border-radius: 6px;
    cursor: pointer;
}

.center-box input[type="submit"]:hover {
    background: #145fcc;
}

.back-link {
    display: block;
    margin-top: 15px;
    text-align: center;
}

.email-list {
    max-width: 600px;
    margin: 20px auto;
    padding: 10px;
}