/* ===============================================================
   引流宝 - 通用基础样式 (reset / 通用 / 组件)
   =============================================================== */
:root {
    --color-bg: #f5f7fb;
    --color-card: #ffffff;
    --color-text: #1f2937;
    --color-sub: #6b7280;
    --color-muted: #9ca3af;
    --color-border: #e5e7eb;
    --color-border-soft: #f3f4f6;
    --color-primary: #4f46e5;
    --color-primary-hover: #4338ca;
    --color-primary-light: #eef2ff;
    --color-success: #10b981;
    --color-warn: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .05);
    --shadow: 0 4px 16px rgba(15, 23, 42, .06);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 150ms cubic-bezier(.4, 0, .2, 1);
}

* { box-sizing: border-box; }
html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
body { font-size: 14px; }
h1, h2, h3, h4 { font-weight: 600; margin: 0; }
p { margin: 0 0 8px; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--color-primary); }

button { font-family: inherit; }

input, select, textarea {
    font-family: inherit;
    font-size: 14px;
}

code {
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
}

/* ---------- Buttons ---------- */
.btn {
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: 8px 14px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition);
    background: white;
    color: var(--color-text);
    text-decoration: none;
    user-select: none;
}
.btn:disabled { opacity: .6; cursor: not-allowed; }
.btn:focus { outline: none; box-shadow: 0 0 0 3px rgba(79, 70, 229, .2); }
.btn.primary {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}
.btn.primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }
.btn.ghost { background: white; border-color: var(--color-border); color: var(--color-text); }
.btn.ghost:hover { background: var(--color-bg); }
.btn.danger { color: var(--color-danger); border-color: var(--color-danger); background: white; }
.btn.danger:hover { background: var(--color-danger); color: white; }
.btn.small { padding: 5px 10px; font-size: 12px; }
.btn.large { padding: 12px 22px; font-size: 14px; }
.btn.block { width: 100%; justify-content: center; }

.link {
    background: none;
    border: none;
    color: var(--color-primary);
    cursor: pointer;
    font-size: 12px;
    padding: 2px 6px;
    border-radius: 4px;
    text-decoration: underline;
}
.link:hover { background: var(--color-primary-light); }

/* ---------- Forms ---------- */
.form label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
    color: #374151;
}
.form label span em {
    color: var(--color-muted);
    font-style: normal;
    font-size: 12px;
    margin-left: 4px;
    font-weight: normal;
}
.form input, .form select, .form textarea {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 9px 12px;
    background: white;
    transition: border-color var(--transition), box-shadow var(--transition);
    width: 100%;
}
.form input:focus, .form select:focus, .form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, .12);
}
.form input:disabled {
    background: var(--color-bg);
    color: var(--color-muted);
}
.form .hint {
    color: var(--color-muted);
    font-size: 12px;
}
.form .actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 16px;
}

/* ---------- Alerts ---------- */
.alert {
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin-bottom: 16px;
    border: 1px solid transparent;
    font-size: 13px;
}
.alert.err { background: #fef2f2; border-color: #fecaca; color: #991b1b; }
.alert.ok { background: #f0fdf4; border-color: #bbf7d0; color: #166534; }
.alert.warn { background: #fffbeb; border-color: #fde68a; color: #92400e; }
.alert p { margin: 4px 0; }
.alert code { background: rgba(0,0,0,.06); color: inherit; }

/* ---------- Tags / Chips ---------- */
.tag {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 500;
    background: #f3f4f6;
    color: #4b5563;
}
.tag.green { background: #ecfdf5; color: #047857; }
.tag.amber { background: #fffbeb; color: #b45309; }
.tag.red   { background: #fef2f2; color: #b91c1c; }
.tag.gray  { background: #f3f4f6; color: #6b7280; }

/* ---------- Pagination ---------- */
.pager {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-sub);
    padding: 12px 0 0;
}

/* ---------- Utilities ---------- */
.muted { color: var(--color-muted); }
.mt-2 { margin-top: 16px; }
.ellipsis {
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ---------- Tables ---------- */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}
.data-table th, .data-table td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--color-border-soft);
    vertical-align: middle;
}
.data-table th {
    font-weight: 500;
    color: var(--color-sub);
    background: var(--color-bg);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.data-table tbody tr:hover { background: var(--color-bg); }
.data-table .empty {
    text-align: center;
    color: var(--color-muted);
    padding: 32px 0;
}
.data-table .url-cell { font-size: 13px; }
.data-table .url-cell code {
    background: transparent;
    color: var(--color-primary);
    padding: 0;
    font-size: 13px;
}
.data-table .op-cell .op {
    color: var(--color-primary);
    margin-right: 8px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    font-size: 13px;
    text-decoration: none;
}
.data-table .op-cell .op.danger { color: var(--color-danger); }
.data-table .op-cell .op:hover { text-decoration: underline; }

.kv-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}
.kv-table th, .kv-table td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--color-border-soft);
    text-align: left;
}
.kv-table th { color: var(--color-sub); font-weight: 500; width: 200px; }

/* ---------- Switch ---------- */
.switch {
    position: relative;
    display: inline-block;
    width: 38px;
    height: 22px;
    cursor: pointer;
}
.switch input { opacity: 0; width: 0; height: 0; }
.switch span {
    position: absolute;
    inset: 0;
    background: #d1d5db;
    border-radius: 999px;
    transition: all var(--transition);
}
.switch span::before {
    content: "";
    position: absolute;
    left: 3px;
    top: 3px;
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
    transition: all var(--transition);
    box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
.switch input:checked + span { background: var(--color-primary); }
.switch input:checked + span::before { left: 19px; }

/* ---------- Captcha ---------- */
.captcha-row {
    display: flex;
    gap: 8px;
    align-items: center;
}
.captcha-row input { flex: 1; }
.captcha-img {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 36px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 18px;
    letter-spacing: 4px;
    user-select: none;
    cursor: pointer;
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    text-decoration: line-through;
    text-decoration-color: rgba(255,255,255,.4);
}

/* ---------- Grid ---------- */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}
@media (max-width: 640px) {
    .grid-3 { grid-template-columns: 1fr; }
}