:root {
    --bg: #f4f6f9;
    --card: #ffffff;
    --border: #dfe3e8;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --text: #1f2933;
    --muted: #6b7280;
    --error-bg: #fdecea;
    --error-border: #f5c2c0;
    --error-text: #a61b1b;
    --success-bg: #e9f7ef;
    --success-border: #b7e1c7;
    --success-text: #1d643b;
    --warning-bg: #fff8e6;
    --warning-border: #f3e0a6;
    --warning-text: #8a6d00;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC",
        "Microsoft JhengHei", "Noto Sans CJK TC", sans-serif;
    line-height: 1.6;
}

.container {
    max-width: 720px;
    margin: 40px auto;
    padding: 0 16px;
}

.container-narrow {
    max-width: 420px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.topbar h1 {
    font-size: 1.4rem;
    margin: 0;
}

.topbar .user {
    font-size: 0.9rem;
    color: var(--muted);
}

.topbar .user a {
    margin-left: 12px;
    color: var(--primary);
    text-decoration: none;
}

h1 {
    font-size: 1.4rem;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

label {
    display: block;
    font-weight: 600;
    margin-top: 16px;
    margin-bottom: 6px;
}

input[type="text"],
input[type="password"],
input[type="email"] {
    width: 100%;
    padding: 10px 12px;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fff;
}

input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.hint {
    font-size: 0.82rem;
    color: var(--muted);
    margin: 6px 0 0;
}

button {
    margin-top: 24px;
    width: 100%;
    padding: 12px;
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    background: var(--primary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

button:hover {
    background: var(--primary-dark);
}

.alert {
    padding: 14px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid transparent;
}

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

.alert-error {
    background: var(--error-bg);
    border-color: var(--error-border);
    color: var(--error-text);
}

.alert-success {
    background: var(--success-bg);
    border-color: var(--success-border);
    color: var(--success-text);
}

.alert-warning {
    background: var(--warning-bg);
    border-color: var(--warning-border);
    color: var(--warning-text);
    margin-top: 16px;
}

.result h2 {
    font-size: 1.05rem;
    margin: 18px 0 8px;
}

.result table {
    width: 100%;
    border-collapse: collapse;
}

.result th,
.result td {
    text-align: left;
    padding: 8px 10px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.result th {
    width: 140px;
    color: var(--muted);
    font-weight: 600;
}

code {
    background: #f1f3f5;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

label.checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 400;
    margin-top: 20px;
}

label.checkbox input {
    width: auto;
    margin: 0;
}

pre.response {
    background: #0f172a;
    color: #e2e8f0;
    padding: 12px;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 0.82rem;
    max-height: 320px;
}

/* 網域模式選擇（自動子域名 / 正式域名） */
label.radio {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 400;
    margin-top: 8px;
    margin-bottom: 0;
}

label.radio input {
    width: auto;
    margin: 0;
}

.field-group {
    margin-top: 8px;
}

/* 行內按鈕（例如一鍵登入 DirectAdmin），不佔整行 */
form.inline-form {
    display: inline-block;
    margin: 8px 8px 0 0;
}

button.btn-inline {
    width: auto;
    margin-top: 0;
    padding: 10px 16px;
}