* { box-sizing: border-box; }

body {
    font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    background: #f4f6f8;
    color: #222;
    margin: 0;
}

.page {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

.site-header {
    background: #2c3e50;
    color: #fff;
    padding: 20px;
    border-radius: 6px 6px 0 0;
}

.site-header h1 {
    margin: 0 0 10px;
    font-size: 1.6em;
}

.site-header nav a {
    color: #ecf0f1;
    text-decoration: none;
    margin-right: 16px;
    font-size: 0.95em;
}

.site-header nav a:hover {
    text-decoration: underline;
}

main {
    background: #fff;
    padding: 24px;
    border-radius: 0 0 6px 6px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.card {
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    padding: 16px;
    margin-bottom: 20px;
}

.card h2 {
    margin-top: 0;
}

fieldset {
    border: 1px solid #ddd;
    border-radius: 6px;
    margin-bottom: 20px;
    padding: 16px;
}

legend {
    font-weight: bold;
    padding: 0 8px;
}

.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 14px;
}

.form-group {
    flex: 1 1 220px;
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 4px;
    font-size: 0.9em;
}

.form-group.checkbox {
    flex-direction: row;
    align-items: center;
    gap: 8px;
}

input[type="text"],
input[type="email"],
input[type="tel"],
select {
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
}

.required::after {
    content: " *";
    color: #c0392b;
}

.person-block {
    border: 1px dashed #bbb;
    border-radius: 6px;
    padding: 14px;
    margin-bottom: 14px;
    position: relative;
}

.person-block h3 {
    margin-top: 0;
}

.remove-person {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #e74c3c;
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 4px 10px;
    cursor: pointer;
}

.actions {
    margin-top: 16px;
}

button, .btn {
    background: #2980b9;
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: 4px;
    font-size: 1em;
    cursor: pointer;
}

button:hover, .btn:hover {
    background: #216a94;
}

#add-person {
    background: #27ae60;
    margin-bottom: 10px;
}

#add-person:hover {
    background: #1e8449;
}

.alert {
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d4efdf;
    color: #196f3d;
    border: 1px solid #a9dfbf;
}

.alert-error {
    background: #fadbd8;
    color: #922b21;
    border: 1px solid #f5b7b1;
}

.alert ul {
    margin: 8px 0 0;
    padding-left: 20px;
}

.hint {
    font-size: 0.8em;
    color: #777;
    margin-top: 4px;
}