/* ============================================================
   im.io 管理后台 - 统一科技感框架（admin.css）
   浅色系：白玻璃 + 品牌渐变 + 柔和发光。各页面在自身 CSS 之后引入。
   ============================================================ */

:root {
  --bg-deep: #eef1fa;
  --bg-body: #f4f6fc;
  --bg-panel: rgba(255, 255, 255, 0.86);
  --bg-panel-solid: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.92);
  --bg-hover: rgba(99, 102, 241, 0.06);
  --line: rgba(100, 116, 139, 0.14);
  --line-strong: rgba(100, 116, 139, 0.28);
  --text: #1e293b;
  --text-dim: #64748b;
  --text-faint: #94a3b8;
  --primary: #6366f1;
  --primary-2: #8b5cf6;
  --accent: #0ea5e9;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --pink: #f472b6;
  --radius: 14px;
  --radius-sm: 9px;
  --glow-primary: 0 6px 20px rgba(99, 102, 241, 0.22);
  --glow-accent: 0 6px 20px rgba(14, 165, 233, 0.2);
  --grad-brand: linear-gradient(135deg, #6366f1 0%, #8b5cf6 55%, #d946ef 100%);
  --grad-accent: linear-gradient(135deg, #0ea5e9, #6366f1);
  --grad-deep: linear-gradient(160deg, #f4f6fc 0%, #eef1fa 60%, #f2f0fb 100%);
  --shadow-card: 0 8px 24px rgba(30, 41, 59, 0.07);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* ---------- 框架布局 ---------- */
body:has(.shell-aside) {
  background: var(--bg-deep);
  color: var(--text);
  font-family: var(--font);
}
.shell-aside {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: 68px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 0;
  background: rgba(255, 255, 255, 0.9);
  border-right: 1px solid var(--line);
  backdrop-filter: blur(16px);
  box-shadow: 4px 0 24px rgba(30, 41, 59, 0.05);
}
.shell-logo {
  width: 42px; height: 42px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--grad-brand);
  color: #fff; font-size: 20px;
  box-shadow: var(--glow-primary);
  margin-bottom: 22px;
  flex: none;
}
.shell-nav { display: flex; flex-direction: column; gap: 8px; width: 100%; align-items: center; }
.shell-nav a {
  position: relative;
  width: 46px; height: 46px;
  border-radius: 13px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-dim);
  text-decoration: none;
  transition: all 0.22s ease;
  font-size: 0;
}
.shell-nav a svg { width: 22px; height: 22px; flex: none; }
.shell-nav a:hover { color: var(--primary); background: var(--bg-hover); transform: translateY(-1px); }
.shell-nav a.active {
  color: #fff;
  background: var(--grad-brand);
  box-shadow: var(--glow-primary);
}
.shell-nav a.active::after {
  content: '';
  position: absolute; left: -9px; top: 50%; transform: translateY(-50%);
  width: 3px; height: 22px; border-radius: 3px;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}
.shell-nav a .nav-tip {
  position: absolute; left: 56px; top: 50%; transform: translateY(-50%) translateX(-4px);
  background: var(--bg-panel-solid); color: var(--text);
  border: 1px solid var(--line);
  padding: 5px 11px; border-radius: 8px; font-size: 12px;
  white-space: nowrap; opacity: 0; pointer-events: none;
  transition: all 0.2s ease; z-index: 99;
  box-shadow: var(--shadow-card);
}
.shell-nav a:hover .nav-tip { opacity: 1; transform: translateY(-50%) translateX(0); }
.shell-aside .shell-bottom { margin-top: auto; }
.shell-aside .shell-bottom a { border: 1px solid var(--line); color: var(--text-dim); }
.shell-aside .shell-bottom a:hover { color: var(--danger); border-color: var(--danger); box-shadow: 0 0 14px rgba(239,68,68,.25); }

.shell-body {
  margin-left: 68px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.shell-topbar {
  position: sticky; top: 0; z-index: 900;
  display: flex; align-items: center; justify-content: space-between;
  height: 60px; padding: 0 26px;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid var(--line);
}
.shell-topbar .tb-title { font-size: 17px; font-weight: 600; color: var(--text); letter-spacing: 0.5px; }
.shell-topbar .tb-title small { color: var(--text-faint); font-weight: 400; margin-left: 10px; font-size: 12px; }
.shell-topbar .tb-right { display: flex; align-items: center; gap: 14px; }
.shell-topbar .tb-user { display: flex; align-items: center; gap: 9px; color: var(--text); font-size: 13.5px; }
.shell-topbar .tb-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--grad-brand);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px; font-weight: 600;
  box-shadow: var(--glow-primary);
}
.shell-topbar .tb-role { color: var(--text-dim); font-size: 12px; }
.shell-main {
  flex: 1;
  padding: 24px 28px 32px;
  background: radial-gradient(1000px 500px at 15% -10%, rgba(99, 102, 241, 0.08), transparent 55%),
              radial-gradient(900px 450px at 105% 0%, rgba(14, 165, 233, 0.07), transparent 50%),
              var(--grad-deep);
}
.shell-main > .page-wrap { max-width: 1500px; margin: 0 auto; }

/* ---------- 通用组件（覆盖各页浅色样式，统一为浅色科技风） ---------- */
.shell-main { color: var(--text); font-family: var(--font); }
.shell-main a { color: var(--accent); }

/* 卡片 */
.shell-main .card,
.shell-main .ov-card,
.shell-main .panel,
.shell-main section.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
.shell-main .card-head { border-bottom: 1px solid var(--line); color: var(--text); }
.shell-main .card-head h3 { color: var(--text); }
.shell-main .card-head h3::before {
  content: '';
  display: inline-block; width: 4px; height: 15px; border-radius: 3px;
  background: var(--grad-brand); margin-right: 9px; vertical-align: -2px;
}

/* 概览数字卡片 */
.shell-main .ov-card {
  position: relative; overflow: hidden;
  padding: 20px 22px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.shell-main .ov-card::after {
  content: '';
  position: absolute; right: -30px; top: -30px; width: 110px; height: 110px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.14), transparent 70%);
  pointer-events: none;
}
.shell-main .ov-card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(30, 41, 59, 0.1), var(--glow-primary); }
.shell-main .ov-card .ov-label { color: var(--text-dim); font-size: 13px; }
.shell-main .ov-card .ov-value { color: var(--text); font-weight: 700; }

/* 表格 */
.shell-main .data-table { color: var(--text); }
.shell-main .data-table thead th {
  color: var(--text-dim); font-weight: 600; font-size: 12.5px;
  background: rgba(99, 102, 241, 0.05);
  border-bottom: 1px solid var(--line-strong);
}
.shell-main .data-table tbody td { border-bottom: 1px solid var(--line); color: var(--text); }
.shell-main .data-table tbody tr:hover { background: var(--bg-hover); }
.shell-main .table-wrap { background: transparent; border: 1px solid var(--line); border-radius: var(--radius-sm); }

/* 按钮 */
.shell-main .btn {
  border: none; cursor: pointer;
  font-family: var(--font);
  transition: all .2s ease;
  border-radius: var(--radius-sm);
}
.shell-main .btn-default,
.shell-main .btn-secondary {
  background: #fff; color: var(--text);
  border: 1px solid var(--line-strong);
}
.shell-main .btn-default:hover, .shell-main .btn-secondary:hover {
  background: var(--bg-hover); border-color: var(--primary); color: var(--primary);
}
.shell-main .btn-primary {
  background: var(--grad-brand); color: #fff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
}
.shell-main .btn-primary:hover { box-shadow: var(--glow-primary); transform: translateY(-1px); }
.shell-main .btn-success { background: linear-gradient(135deg, #10b981, #34d399); color: #fff; }
.shell-main .btn-success:hover { box-shadow: 0 0 16px rgba(16, 185, 129, 0.35); }
.shell-main .btn-danger { background: linear-gradient(135deg, #ef4444, #f87171); color: #fff; }
.shell-main .btn-danger:hover { box-shadow: 0 0 16px rgba(239, 68, 68, 0.35); }
.shell-main .btn-outline {
  background: #fff; color: var(--text); border: 1px solid var(--line-strong);
}
.shell-main .btn-outline:hover { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 12px rgba(14, 165, 233, 0.18); }

/* 表单 */
.shell-main .form-input,
.shell-main input[type="text"],
.shell-main input[type="password"],
.shell-main input[type="number"],
.shell-main input[type="email"],
.shell-main select,
.shell-main textarea {
  background: #fff;
  border: 1px solid var(--line-strong);
  color: var(--text);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  font-family: var(--font);
}
.shell-main .form-input:focus,
.shell-main select:focus,
.shell-main textarea:focus,
.shell-main input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.14);
}
.shell-main select option { background: #fff; color: var(--text); }

/* 徽标/标签 */
.shell-main .badge, .shell-main .tag,
.shell-main .status-tag, .shell-main .sc-badge {
  border-radius: 999px;
}

/* Toast 通用 */
.admin-toast {
  position: fixed; top: 22px; left: 50%; transform: translateX(-50%) translateY(-20px);
  z-index: 99999; padding: 11px 22px; border-radius: 12px;
  font-size: 13.5px; color: var(--text); opacity: 0; pointer-events: none;
  background: #fff; border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-card), var(--glow-accent);
  transition: all .3s ease;
}
.admin-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.admin-toast.success { border-color: var(--success); }
.admin-toast.error { border-color: var(--danger); }
.admin-toast.info { border-color: var(--accent); }

/* 滚动条 */
.shell-main ::-webkit-scrollbar { width: 8px; height: 8px; }
.shell-main ::-webkit-scrollbar-thumb { background: rgba(100, 116, 139, 0.25); border-radius: 8px; }
.shell-main ::-webkit-scrollbar-thumb:hover { background: rgba(100, 116, 139, 0.4); }
.shell-main ::-webkit-scrollbar-track { background: transparent; }

/* 页面进入动效 */
.shell-main > .page-wrap { animation: shellFadeIn .35s ease; }
@keyframes shellFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 各页特定覆盖 ---------- */
/* dashboard */
.shell-main .dash-page { max-width: 1200px; margin: 0 auto; padding: 0; display: flex; flex-direction: column; gap: 20px; }
.shell-main .nav-card {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.shell-main .nav-card:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: var(--shadow-card), var(--glow-primary); }
.shell-main .nav-card .nav-title { color: var(--text); }
.shell-main .nav-card .nav-desc { color: var(--text-dim); }
.shell-main .status-tag.status-on { background: rgba(16, 185, 129, 0.12); color: #059669; border: 1px solid rgba(16, 185, 129, 0.3); }
.shell-main .status-tag.status-off { background: rgba(239, 68, 68, 0.1); color: #dc2626; border: 1px solid rgba(239, 68, 68, 0.3); }
.shell-main .agent-chip { background: rgba(99, 102, 241, 0.1); color: var(--primary); border: 1px solid rgba(99, 102, 241, 0.25); }
.shell-main .empty-row td { color: var(--text-faint); }

/* workbench */
.shell-main .app-container {
  width: 100%;
  height: calc(100vh - 112px);
  min-height: 560px;
  grid-template-columns: 300px 1fr 320px;
  gap: 12px;
  background: transparent;
}
.shell-main .app-container > .left-panel,
.shell-main .app-container > .right-panel {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
.shell-main .chat-panel {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.shell-main .admin-name, .shell-main .visitor-name, .shell-main .vc-name,
.shell-main .sc-name, .shell-main .profile-info .admin-name { color: var(--text); }
.shell-main .admin-role, .shell-main .visitor-sub, .shell-main .sc-site,
.shell-main .vc-id, .shell-main .sc-time, .shell-main .sc-page { color: var(--text-dim); }
.shell-main .tabs-nav .tab-item { color: var(--text-dim); }
.shell-main .tabs-nav .tab-item.active { color: var(--primary); background: rgba(99, 102, 241, 0.1); }
.shell-main .session-card { background: #fff; border: 1px solid var(--line); border-radius: 12px; transition: all .2s; }
.shell-main .session-card:hover { background: var(--bg-hover); border-color: var(--line-strong); }
.shell-main .session-card.active { background: rgba(99, 102, 241, 0.08); border-color: var(--primary); box-shadow: var(--glow-primary); }
.shell-main .message-list .msg-row .bubble { color: var(--text); }
.shell-main .chat-header-bar { border-bottom: 1px solid var(--line); }
.shell-main .input-area { border-top: 1px solid var(--line); }
.shell-main .msg-input textarea, .shell-main .input-box textarea {
  background: transparent; color: var(--text); border: none;
}
.shell-main .info-section .info-cell { background: #fff; border: 1px solid var(--line); border-radius: 10px; }
.shell-main .info-section .info-cell label { color: var(--text-faint); }
.shell-main .info-section .info-cell div { color: var(--text); }
.shell-main .section-header { color: var(--text); }
.shell-main .tag-list .visitor-tag,
.shell-main .tag-item { background: rgba(99, 102, 241, 0.1); color: var(--primary); border: 1px solid rgba(99, 102, 241, 0.28); }
.shell-main .history-list .history-item { background: #fff; border: 1px solid var(--line); }
.shell-main .history-list .history-item:hover { background: var(--bg-hover); }
.shell-main .empty-state h3 { color: var(--text); }
.shell-main .empty-state p { color: var(--text-dim); }

/* settings / agent / stat */
.shell-main .settings-form label { color: var(--text-dim); }
.shell-main .settings-form .form-input { color: var(--text); }
.shell-main .agent-card, .shell-main .site-card, .shell-main .agent-row {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
}
.shell-main .stat-chart, .shell-main .chart-box {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius);
}
.shell-main .stat-value, .shell-main .num { color: var(--accent); }

/* 模态框 */
.shell-main .modal-mask { background: rgba(15, 23, 42, 0.35); backdrop-filter: blur(4px); }
.shell-main .modal {
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
.shell-main .modal .modal-header h3 { color: var(--text); }
.shell-main .modal .modal-header { border-bottom: 1px solid var(--line); }
.shell-main .modal .modal-footer { border-top: 1px solid var(--line); }