body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
}

.header,
.footer {
    background-color: #222;
    color: #fff;
    padding: 1rem;
}

.main {
    max-width: 600px;
    margin: 2rem auto;
    background-color: #fff;
    padding: 2rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
    border-radius: 4px;
}

/* Typography & links */
.page-title {
    margin-top: 0;
    margin-bottom: 1rem;
}

a {
    color: #0366d6;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Messages */
.messages {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem 0;
}

.messages li {
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.25rem;
    border-radius: 3px;
    background-color: #e1f5fe;
}

/* Forms */
.form {
    margin: 0;
}

.form-group {
    margin-bottom: 0.75rem;
}

.form-label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.form-input {
    width: 100%;
    padding: 0.5rem;
    border-radius: 3px;
    border: 1px solid #ccc;
    box-sizing: border-box;
}

.form-errors {
    margin-top: 0.25rem;
    color: #b00020;
    font-size: 0.875rem;
}

.form-actions {
    margin-top: 1rem;
}

button,
input[type="submit"] {
    padding: 0.5rem 1rem;
    border-radius: 3px;
    border: none;
    background-color: #0366d6;
    color: #fff;
    font-weight: 600;
    cursor: pointer;
}

button:hover,
input[type="submit"]:hover {
    background-color: #024f9b;
}

/* Link groups under forms */
.link-group {
    margin-top: 1rem;
    font-size: 0.95rem;
}

.link-group a {
    display: inline-block;
    margin-right: 0.75rem;
}