:root {
    --bg: #f5f6f8;
    --card-bg: #ffffff;
    --text: #1c1f26;
    --muted: #6b7280;
    --border: #e2e5eb;
    --primary: #2f6feb;
    --primary-dark: #1f52b8;
    --danger: #d64545;
    --success-bg: #e7f7ec;
    --success-text: #1a7a3d;
    --error-bg: #fdecec;
    --error-text: #b3261e;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.topbar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
}
.topbar-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.brand { font-weight: 700; text-decoration: none; color: var(--text); font-size: 18px; }
.topbar nav { display: flex; align-items: center; gap: 18px; }
.topbar nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
.topbar nav a:hover { color: var(--primary); }
.topbar nav .user { color: var(--text); font-weight: 600; font-size: 14px; }

.content {
    max-width: 960px;
    margin: 24px auto;
    padding: 0 20px 60px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 20px;
}
.card-narrow { max-width: 480px; }
.card-head { display: flex; align-items: center; justify-content: space-between; }

h1 { font-size: 20px; margin: 0 0 14px; }
h2 { font-size: 16px; margin: 0 0 12px; }

label {
    display: block;
    margin-bottom: 14px;
    font-size: 13px;
    color: var(--muted);
}
label.checkbox-label { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text); }
label.checkbox-label input { width: auto; }

input[type=text], input[type=email], input[type=password], input[type=date], input[type=number], select, textarea {
    width: 100%;
    margin-top: 6px;
    padding: 8px 10px;
    font-size: 14px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #fff;
    color: var(--text);
}

.inline-form { display: flex; align-items: flex-end; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.inline-form label { margin-bottom: 0; }
form.inline { display: inline; }

button, .button {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 9px 16px;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}
button:hover, .button:hover { background: var(--primary-dark); }
.button-small { padding: 5px 10px; font-size: 12px; }
.button-danger { background: var(--danger); }
.button-danger:hover { background: #b53333; }

.alert { padding: 10px 14px; border-radius: 6px; font-size: 14px; margin-bottom: 14px; }
.alert-error { background: var(--error-bg); color: var(--error-text); }
.alert-success { background: var(--success-bg); color: var(--success-text); }

.license-key {
    font-family: "SFMono-Regular", Consolas, monospace;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 10px 12px;
    background: #fff;
    border: 1px dashed var(--primary);
    border-radius: 6px;
    display: inline-block;
}

.hint { color: var(--muted); font-size: 13px; }

.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th, .data-table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.data-table th { color: var(--muted); font-weight: 600; }
.data-table code { font-size: 12px; }

.badge { padding: 2px 8px; border-radius: 12px; font-size: 12px; font-weight: 600; }
.status-active { background: var(--success-bg); color: var(--success-text); }
.status-revoked { background: var(--error-bg); color: var(--error-text); }
.status-expired { background: #fff3d6; color: #9a6b00; }

.detail-list { display: grid; grid-template-columns: 140px 1fr; row-gap: 10px; font-size: 14px; }
.detail-list dt { color: var(--muted); }
.detail-list dd { margin: 0; }