/* ============================================
   AI降重工坊 管理后台样式
   ============================================ */

:root {
  --c-primary: #5B4FE9;
  --c-primary-dark: #4738C9;
  --c-primary-light: #EEEDFE;
  --c-accent: #0F6E56;
  --c-accent-light: #E1F5EE;
  --c-danger: #E5484D;
  --c-danger-light: #FFF0F0;
  --c-warning: #F5A623;
  --c-warning-light: #FFF8E6;
  --c-info: #0EA5E9;
  --c-info-light: #E0F2FE;
  --bg-page: #F0F2F5;
  --bg-card: #FFFFFF;
  --bg-sidebar: #1E1E2E;
  --bg-sidebar-hover: #2A2A3E;
  --bg-sidebar-active: #5B4FE9;
  --text-1: #1A1A2E;
  --text-2: #6B6B7B;
  --text-3: #A0A0B0;
  --text-sidebar: #A0A0B8;
  --text-sidebar-active: #FFFFFF;
  --border: #ECECF2;
  --border-hover: #D8D8E2;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.05), 0 4px 12px rgba(0,0,0,.03);
  --sidebar-w: 220px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg-page);
  color: var(--text-1);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Layout ---------- */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-sidebar);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
}
.sidebar-logo {
  padding: 20px 22px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.sidebar-logo .logo-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--c-primary), #7B6FF5);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 700;
}
.sidebar-logo .logo-text {
  font-size: 15px;
}
.sidebar-logo .logo-sub {
  font-size: 10px; font-weight: 400; color: var(--text-sidebar);
  display: block; margin-top: 2px;
}
.sidebar-nav {
  flex: 1;
  padding: 12px 10px;
}
.sidebar-nav .nav-section {
  font-size: 11px;
  color: rgba(160,160,184,.5);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 16px 12px 6px;
}
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  color: var(--text-sidebar);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  transition: all .15s;
  margin-bottom: 2px;
}
.sidebar-nav a:hover {
  background: var(--bg-sidebar-hover);
  color: #fff;
}
.sidebar-nav a.active {
  background: var(--bg-sidebar-active);
  color: var(--text-sidebar-active);
  font-weight: 500;
}
.sidebar-nav a .nav-icon {
  font-size: 16px;
  width: 20px; text-align: center;
}
.sidebar-footer {
  padding: 16px 22px;
  border-top: 1px solid rgba(255,255,255,.06);
  font-size: 11px;
  color: rgba(160,160,184,.5);
}

/* ---------- Main content ---------- */
.main {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
}

/* ---------- Top bar ---------- */
.topbar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-left {
  font-size: 16px;
  font-weight: 600;
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}
.topbar-user {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-2);
}
.topbar-user .avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--c-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 600;
}
.btn-logout {
  color: var(--text-3);
  text-decoration: none;
  font-size: 12px;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all .15s;
}
.btn-logout:hover {
  color: var(--c-danger);
  border-color: var(--c-danger);
}

/* ---------- Content area ---------- */
.content {
  padding: 24px;
  flex: 1;
}

/* ---------- Cards ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-title {
  font-size: 15px;
  font-weight: 600;
}
.card-body {
  padding: 20px;
}

/* ---------- Stat cards ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--c-primary);
}
.stat-card.accent::before { background: var(--c-accent); }
.stat-card.warning::before { background: var(--c-warning); }
.stat-card.info::before { background: var(--c-info); }
.stat-card.danger::before { background: var(--c-danger); }
.stat-card .stat-icon {
  font-size: 28px;
  margin-bottom: 8px;
}
.stat-card .stat-num {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-1);
  line-height: 1.2;
}
.stat-card .stat-label {
  font-size: 13px;
  color: var(--text-2);
  margin-top: 4px;
}
.stat-card .stat-trend {
  font-size: 12px;
  margin-top: 8px;
  color: var(--c-accent);
}
.stat-card .stat-trend.down { color: var(--c-danger); }

/* ---------- Table ---------- */
.table-wrap {
  overflow-x: auto;
}
table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
table.data-table th {
  text-align: left;
  padding: 10px 16px;
  background: var(--bg-page);
  color: var(--text-2);
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-1);
}
table.data-table tr:hover td {
  background: #FAFAFC;
}
table.data-table .td-text {
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- Forms ---------- */
.form-group {
  margin-bottom: 18px;
}
.form-group:last-child { margin-bottom: 0; }
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-1);
  margin-bottom: 6px;
}
.form-label .hint {
  font-weight: 400;
  color: var(--text-3);
  font-size: 12px;
  margin-left: 4px;
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-1);
  background: var(--bg-card);
  font-family: inherit;
  transition: border-color .15s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px var(--c-primary-light);
}
.form-textarea {
  resize: vertical;
  min-height: 80px;
}
.form-row {
  display: flex;
  gap: 16px;
}
.form-row .form-group {
  flex: 1;
}

/* ---------- Buttons ---------- */
.btn {
  border: none;
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all .15s;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  text-decoration: none;
}
.btn-primary {
  background: var(--c-primary);
  color: #fff;
}
.btn-primary:hover { background: var(--c-primary-dark); }
.btn-primary:disabled {
  background: #C0BAEE; cursor: not-allowed;
}
.btn-ghost {
  background: var(--bg-page);
  color: var(--text-2);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: #ECECF2; color: var(--text-1); }
.btn-sm {
  padding: 5px 12px;
  font-size: 12px;
}
.btn-success {
  background: var(--c-accent);
  color: #fff;
}
.btn-success:hover { background: #0B5841; }
.btn-danger {
  background: var(--c-danger);
  color: #fff;
}
.btn-danger:hover { background: #C93D42; }

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}
.badge-success { background: var(--c-accent-light); color: var(--c-accent); }
.badge-danger { background: var(--c-danger-light); color: var(--c-danger); }
.badge-warning { background: var(--c-warning-light); color: var(--c-warning); }
.badge-info { background: var(--c-info-light); color: var(--c-info); }
.badge-default { background: #F0F0F5; color: var(--text-2); }

/* ---------- Model config card ---------- */
.model-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}
.model-card-header {
  padding: 14px 20px;
  background: var(--bg-page);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.model-card-header .model-name {
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}
.model-card-body {
  padding: 20px;
}

/* ---------- Toggle switch ---------- */
.toggle {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 22px;
}
.toggle input { display: none; }
.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background: #D0D0D8;
  border-radius: 11px;
  transition: .2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 16px; height: 16px;
  left: 3px; bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: .2s;
}
.toggle input:checked + .toggle-slider {
  background: var(--c-accent);
}
.toggle input:checked + .toggle-slider::before {
  transform: translateX(18px);
}

/* ---------- Pagination ---------- */
.pagination {
  display: flex;
  gap: 4px;
  align-items: center;
  justify-content: center;
  padding: 16px 0;
}
.pagination a, .pagination span {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  text-decoration: none;
  color: var(--text-2);
}
.pagination a:hover { background: var(--bg-page); }
.pagination .current {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  top: 72px; right: 24px;
  background: var(--text-1);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
  transition: all .25s;
  z-index: 9999;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}
.toast.success { background: var(--c-accent); }
.toast.error { background: var(--c-danger); }

/* ---------- Login page ---------- */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1E1E2E 0%, #2A2A4E 100%);
}
.login-card {
  width: 380px;
  background: #fff;
  border-radius: 16px;
  padding: 40px 32px;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.login-logo {
  text-align: center;
  margin-bottom: 28px;
}
.login-logo .logo-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--c-primary), #7B6FF5);
  color: #fff;
  display: inline-flex;
  align-items: center; justify-content: center;
  font-size: 22px; font-weight: 700;
  margin-bottom: 12px;
}
.login-logo h1 {
  font-size: 20px; font-weight: 600;
}
.login-logo p {
  font-size: 13px; color: var(--text-2);
  margin-top: 4px;
}
.login-error {
  background: var(--c-danger-light);
  color: var(--c-danger);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
}
.login-btn {
  width: 100%;
  padding: 11px;
  font-size: 14px;
}
.login-hint {
  text-align: center;
  margin-top: 20px;
  font-size: 12px;
  color: var(--text-3);
}

/* ---------- Score bar mini ---------- */
.score-mini {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.score-mini-bar {
  width: 60px; height: 6px;
  background: #E8E8EF;
  border-radius: 3px;
  overflow: hidden;
}
.score-mini-fill {
  height: 100%;
  border-radius: 3px;
}

/* ---------- Empty state ---------- */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-3);
}
.empty-state .icon {
  font-size: 40px;
  opacity: .3;
  margin-bottom: 12px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .main { margin-left: 0; }
  .stat-grid { grid-template-columns: 1fr; }
  .form-row { flex-direction: column; }
}