* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg: #f6f7f9;
    --surface: #ffffff;
    --text: #1f2328;
    --muted: #57606a;
    --border: #e6e8eb;
    --border-strong: #d0d7de;
    --accent: #0b5fff;
    --accent-hover: #0a56e6;
    --shadow: 0 1px 6px rgba(0,0,0,0.04);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    padding: 20px;
    color: var(--text);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.header {
    background: var(--surface);
    padding: 16px 18px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

h1 { color: var(--text); font-size: 20px; font-weight: 600; }

h2 { 
    color: var(--text); 
    font-size: 16px; 
    margin-bottom: 16px; 
    padding-bottom: 10px; 
    border-bottom: 1px solid var(--border); 
}

.card {
    background: var(--surface);
    padding: 18px;
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--muted);
    font-weight: 500;
}

input[type="text"], textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    font-size: 14px;
    font-family: monospace;
    background: #fff;
    color: var(--text);
}

input[type="text"]:focus, textarea:focus {
    outline: none;
    border-color: color-mix(in srgb, var(--accent) 55%, var(--border-strong));
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent);
}

textarea {
    min-height: 80px;
    resize: vertical;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.btn {
    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s, opacity 0.2s, border-color 0.2s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-secondary {
    background: #f6f8fa;
    border: 1px solid var(--border-strong);
    color: #1f2328;
}

.btn-secondary:hover {
    background: #eef1f4;
}

.success {
    background: #ecfdf3;
    color: #116329;
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 20px;
    border: 1px solid #b7ebc6;
}

.status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.status.enabled {
    background: #ecfdf3;
    color: #116329;
}

.status.disabled {
    background: #fff1f3;
    color: #9f1239;
}

.tip {
    background: #f6f8fa;
    border: 1px solid var(--border);
    padding: 10px;
    border-radius: 6px;
    margin-top: 10px;
    font-size: 13px;
    color: var(--muted);
}