/* ===== RST 管理后台 视觉系统 =====
   延续官网设计语言：白底、发丝线、品牌蓝 #0071e3、大留白。
   不使用通用后台的深色侧边栏/渐变卡片模板。 */
:root {
    --bg: #f5f5f7;
    --surface: #ffffff;
    --text: #1d1d1f;
    --text-2: #6e6e73;
    --text-3: #86868b;
    --border: #d2d2d7;
    --border-soft: #e8e8ed;
    --accent: #0071e3;
    --accent-hover: #0077ed;
    --accent-soft: rgba(0, 113, 227, 0.1);
    --danger: #d70015;
    --danger-soft: rgba(215, 0, 21, 0.08);
    --ok: #1a7f37;
    --ok-soft: rgba(26, 127, 55, 0.1);
    --warn: #9a6700;
    --warn-soft: rgba(154, 103, 0, 0.1);
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, 'Courier New', monospace;
}

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

html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
}

/* 键盘可达性：所有可交互元素有清晰焦点环 */
a, button, input, select, textarea { outline: none; }
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.25);
}

/* ===== 顶栏 ===== */
.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--surface);
    border-bottom: 1px solid var(--border-soft);
}
.topbar-inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.brand-mark {
    width: 28px; height: 28px;
    border-radius: 7px;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    font-size: 15px;
    display: flex; align-items: center; justify-content: center;
}
.brand-name { font-weight: 600; font-size: 15px; letter-spacing: 0.2px; }
.brand-name small { color: var(--text-3); font-weight: 400; margin-left: 8px; }
.topbar-right { display: flex; align-items: center; gap: 14px; }
.admin-chip {
    display: flex; align-items: center; gap: 8px;
    font-size: 13px; color: var(--text-2);
}
.admin-chip .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); }
.logout-link {
    font-size: 13px; color: var(--text-2);
    text-decoration: none; padding: 4px 2px;
    border-bottom: 1px solid transparent;
    transition: color 0.2s;
}
.logout-link:hover { color: var(--danger); border-bottom-color: var(--danger); }

/* ===== 二级导航 ===== */
.admin-nav {
    background: var(--surface);
    border-bottom: 1px solid var(--border-soft);
}
.admin-nav-inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    gap: 2px;
    overflow-x: auto;
}
.admin-nav a {
    padding: 11px 14px;
    font-size: 13px;
    color: var(--text-2);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
    transition: color 0.2s;
}
.admin-nav a:hover { color: var(--text); }
.admin-nav a.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
    font-weight: 500;
}

/* ===== 主区域 ===== */
.main {
    max-width: 1080px;
    margin: 0 auto;
    padding: 32px 24px 64px;
    animation: fade-up 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
}
@keyframes fade-up {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
    .main { animation: none; }
    * { transition-duration: 0.01ms !important; }
}

.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.eyebrow {
    font-size: 12px; font-weight: 600; letter-spacing: 0.08em;
    text-transform: uppercase; color: var(--text-3); margin-bottom: 4px;
}
.page-title { font-size: 24px; font-weight: 700; letter-spacing: -0.01em; }
.page-sub { color: var(--text-2); font-size: 13px; margin-top: 2px; }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    font-family: var(--font);
    font-size: 13px; font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--text-3); }
.btn-danger { background: var(--surface); color: var(--danger); border-color: var(--border); }
.btn-danger:hover { background: var(--danger-soft); border-color: var(--danger); }
.btn-danger-solid { background: var(--danger); color: #fff; }
.btn-danger-solid:hover { background: #b30012; }

/* ===== 筛选条 ===== */
.filter-bar {
    display: flex; flex-wrap: wrap; gap: 10px;
    margin-bottom: 16px;
}
.input, .select {
    font-family: var(--font);
    font-size: 13px;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--text);
    transition: border-color 0.2s;
}
.input { min-width: 220px; }
.input:focus, .select:focus { border-color: var(--accent); }
.input::placeholder { color: var(--text-3); }

/* ===== 数据表 ===== */
.table-surface {
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th {
    text-align: left;
    font-size: 11px; font-weight: 600; letter-spacing: 0.06em;
    text-transform: uppercase; color: var(--text-3);
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-soft);
    background: var(--surface);
}
.table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-soft);
    vertical-align: middle;
}
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr { transition: background 0.15s; }
.table tbody tr:hover { background: #fafafa; }
.table .mono { font-family: var(--mono); font-size: 12px; color: var(--text-2); }

.member-cell { display: flex; align-items: center; gap: 12px; }
.member-avatar {
    width: 36px; height: 36px; border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff; font-weight: 600; font-size: 14px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; overflow: hidden;
}
.member-avatar img { width: 100%; height: 100%; object-fit: cover; }
.member-name { font-weight: 600; }
.member-title { font-size: 12px; color: var(--text-2); margin-top: 1px; }

/* 状态徽章 */
.badge {
    display: inline-block;
    font-size: 11px; font-weight: 600;
    padding: 2px 10px;
    border-radius: 100px;
    white-space: nowrap;
}
.badge-ok   { background: var(--ok-soft); color: var(--ok); }
.badge-warn { background: var(--warn-soft); color: var(--warn); }
.badge-danger { background: var(--danger-soft); color: var(--danger); }
.badge-neutral { background: var(--accent-soft); color: var(--accent); }
.badge-gray { background: rgba(110, 110, 115, 0.12); color: var(--text-2); }

.row-actions { display: flex; gap: 8px; }
.row-actions a, .row-actions button {
    font-size: 12px; color: var(--accent);
    background: none; border: none; cursor: pointer;
    font-family: var(--font); padding: 2px 0;
    text-decoration: none;
}
.row-actions a:hover { text-decoration: underline; }
.row-actions .danger { color: var(--danger); }

/* ===== 分页 ===== */
.pager {
    display: flex; align-items: center; justify-content: space-between;
    margin-top: 16px; color: var(--text-2); font-size: 13px;
}
.pager-btns { display: flex; gap: 8px; }
.pager-info { color: var(--text-3); }

/* ===== 提示条 ===== */
.alert {
    padding: 10px 14px;
    border-radius: var(--radius);
    font-size: 13px;
    margin-bottom: 16px;
}
.alert-ok { background: var(--ok-soft); color: var(--ok); }
.alert-err { background: var(--danger-soft); color: var(--danger); }

/* ===== 空状态 ===== */
.empty {
    padding: 48px 24px;
    text-align: center;
    color: var(--text-2);
}
.empty .empty-title { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.empty .empty-hint { font-size: 13px; color: var(--text-3); }

/* ===== 表单页 ===== */
.form-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 20px;
    align-items: start;
}
@media (max-width: 860px) { .form-grid { grid-template-columns: 1fr; } }

.card {
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}
.card-title {
    font-size: 14px; font-weight: 600;
    padding-bottom: 12px; margin-bottom: 18px;
    border-bottom: 1px solid var(--border-soft);
}
.card-title .hint { font-weight: 400; color: var(--text-3); font-size: 12px; margin-left: 8px; }

.field { margin-bottom: 16px; }
.field label { display: block; font-size: 12px; color: var(--text-2); margin-bottom: 5px; font-weight: 500; }
.field label .req { color: var(--danger); }
.field .input, .field .select { width: 100%; }
.field textarea { width: 100%; min-height: 72px; resize: vertical; }
.field .field-hint { font-size: 11px; color: var(--text-3); margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

.avatar-preview {
    width: 96px; height: 96px; border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    overflow: hidden; margin-bottom: 12px;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 32px; font-weight: 700;
}
.avatar-preview img { width: 100%; height: 100%; object-fit: cover; }

.readonly-box {
    background: var(--bg);
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    padding: 12px 14px;
    font-size: 12px;
    color: var(--text-2);
}
.readonly-box div { display: flex; justify-content: space-between; gap: 12px; padding: 3px 0; }
.readonly-box .k { color: var(--text-3); }
.readonly-box .v { font-weight: 500; color: var(--text); text-align: right; }

.form-actions {
    display: flex; gap: 10px; align-items: center;
    margin-top: 24px; padding-top: 20px;
    border-top: 1px solid var(--border-soft);
}

/* ===== 登录页 ===== */
.login-wrap {
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    padding: 24px;
}
.login-card {
    width: 100%; max-width: 380px;
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 40px 36px 32px;
    animation: fade-up 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
}
.login-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; }
.login-title { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; }
.login-sub { font-size: 12px; color: var(--text-3); margin-top: 2px; }
.login-foot { margin-top: 24px; text-align: center; font-size: 12px; color: var(--text-3); }
.login-foot a { color: var(--text-2); text-decoration: none; }
.login-foot a:hover { color: var(--accent); }

/* ===== 名单分类 ===== */
.member-chip {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--bg); border: 1px solid var(--border-soft);
    border-radius: 100px; padding: 4px 6px 4px 8px;
    font-size: 12px; color: var(--text);
}
.member-chip img { width: 20px; height: 20px; border-radius: 50%; object-fit: cover; }
.chip-remove {
    background: none; border: none; cursor: pointer;
    color: var(--text-3); font-size: 14px; padding: 0 4px;
}
.chip-remove:hover { color: var(--danger); }

/* ===== 角色标签管理 ===== */
.tag-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tag-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    margin: 0;
}

.tag-row.dragging {
    opacity: 0.4;
}

.drag-handle {
    cursor: grab;
    color: var(--text-3);
    font-size: 16px;
    user-select: none;
    padding: 4px;
}

.drag-handle:active {
    cursor: grabbing;
}

.tag-color-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.tag-name {
    flex: 1;
    min-width: 160px;
}

.tag-color {
    width: 90px;
}

.tag-row .btn {
    white-space: nowrap;
}

/* ===== 成员编辑：角色标签多选 ===== */
.role-checks {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* 彩色角色标签（后台通用） */
.card-tags {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 5px;
}

.role-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 9px;
    border-radius: 100px;
    line-height: 1.6;
    white-space: nowrap;
}

.role-tag-blue   { background: rgba(0, 113, 227, 0.12);  color: #0071e3; }
.role-tag-green  { background: rgba(26, 127, 55, 0.12);  color: #1a7f37; }
.role-tag-purple { background: rgba(130, 80, 223, 0.12); color: #8250df; }
.role-tag-orange { background: rgba(178, 80, 0, 0.12);   color: #b25000; }
.role-tag-red    { background: rgba(215, 0, 21, 0.10);   color: #d70015; }
.role-tag-gray   { background: rgba(110, 110, 115, 0.14); color: #6e6e73; }

.role-check {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 13px;
    padding: 4px 10px 4px 8px;
    border: 1px solid var(--border-soft);
    border-radius: 100px;
    background: var(--surface);
    transition: border-color 0.2s;
}

.role-check:hover {
    border-color: var(--accent);
}

.role-check input {
    accent-color: var(--accent);
    margin: 0;
}