:root {
  --bg-page: #f5f7fa;
  --bg-surface: #ffffff;
  --bg-subtle: #f8fafc;
  --bg-header: #0f172a;
  --bg-header-hover: #1e293b;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text-primary: #111827;
  --text-secondary: #475569;
  --text-muted: #525e70;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-active: #1e40af;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --danger-active: #991b1b;
  --success: #15803d;
  --success-hover: #166534;
  --radius-sm: 6px;
  --radius-md: 10px;
}

*, *::before, *::after {
  box-sizing: border-box;
}

::selection {
  background: #dbeafe;
  color: #1e3a8a;
}

[hidden],
[hidden] * {
  display: none !important;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-page);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.num,
td.num,
.stat-value {
  font-variant-numeric: tabular-nums;
}

/* Header & Navigation */
.topbar {
  background: var(--bg-header);
  color: #f8fafc;
  border-bottom: 1px solid #1e293b;
  padding: 12px 24px;
}

.topbar.topbar-cms {
  background: #0b1f2a;
  border-bottom-color: #164e63;
}

.topbar-inner {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.topbar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #ffffff;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  min-height: 36px;
  padding: 4px 8px 4px 0;
}

.brand:focus-visible {
  outline: 2px solid #93c5fd;
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.version-tag {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  font-weight: 500;
  color: #cbd5e1;
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 4px;
  padding: 2px 6px;
}

.portal-badge {
  font-size: 11px;
  font-weight: 600;
  color: #a5f3fc;
  background: #164e63;
  border: 1px solid #0891b2;
  border-radius: 999px;
  padding: 2px 8px;
}

.topnav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  min-width: 44px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  color: #cbd5e1;
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.nav-link:hover {
  background: var(--bg-header-hover);
  color: #ffffff;
}

.nav-link:active {
  background: #334155;
}

.nav-link:focus-visible {
  outline: 2px solid #93c5fd;
  outline-offset: 2px;
}

.nav-link.active,
.nav-link[aria-current="page"] {
  background: var(--accent);
  color: #ffffff;
}

.nav-link-logout {
  color: #fecaca;
}

.nav-link-logout:hover {
  background: #7f1d1d;
  color: #ffffff;
}

/* Main Layout */
main {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px;
}

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.page-title-group {
  min-width: 0;
}

h1 {
  margin: 0 0 4px;
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.page-subtitle {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
}

h2 {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.section-desc {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--text-secondary);
}

/* Cards & Grids */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 16px;
  min-width: 0;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.card-header h2,
.card-header h3 {
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  min-width: 0;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
  min-width: 0;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  min-width: 0;
}

.kpi-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  min-width: 0;
}

.kpi-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin: 0 0 8px;
}

.kpi-value {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 4px;
  line-height: 1.2;
}

.kpi-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0;
}

/* Alert Banners (1px border only, no thick side border) */
.alert-banner {
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
  border: 1px solid var(--border);
  background: var(--bg-subtle);
}

.alert-banner.alert-danger {
  border-color: #fecaca;
  background: #fef2f2;
  color: #991b1b;
}

.alert-banner.alert-info {
  border-color: #bfdbfe;
  background: #eff6ff;
  color: #1e40af;
}

.alert-banner.alert-success {
  border-color: #bbf7d0;
  background: #f0fdf4;
  color: #166534;
}

.alert-banner h2 {
  color: inherit;
  margin-bottom: 8px;
}

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

.alert-list li {
  margin-bottom: 4px;
}

/* Forms & Controls */
label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  min-width: 0;
}

input,
textarea,
select {
  width: 100%;
  min-height: 36px;
  padding: 8px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14px;
  color: var(--text-primary);
  background: var(--bg-surface);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input:hover,
textarea:hover,
select:hover {
  border-color: #94a3b8;
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

input:disabled,
textarea:disabled,
select:disabled {
  background: #f1f5f9;
  color: var(--text-muted);
  cursor: not-allowed;
  opacity: 0.7;
}

textarea {
  min-height: 88px;
  resize: vertical;
}

input[type="checkbox"],
input[type="radio"] {
  appearance: none;
  -webkit-appearance: none;
  width: auto;
  min-width: 32px;
  min-height: 28px;
  padding: 0;
  margin: 0;
  border: 0;
  background: transparent;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  cursor: pointer;
}

input[type="checkbox"]::before,
input[type="radio"]::before {
  content: "";
  width: 18px;
  height: 18px;
  border: 1.5px solid #94a3b8;
  border-radius: 4px;
  background: #ffffff;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

input[type="radio"]::before {
  border-radius: 999px;
}

input[type="checkbox"]:hover::before,
input[type="radio"]:hover::before {
  border-color: var(--accent);
}

input[type="checkbox"]:checked::before,
input[type="radio"]:checked::before {
  background: var(--accent);
  border-color: var(--accent);
}

input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  width: 5px;
  height: 9px;
  border: solid #ffffff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) translate(-1px, -1px);
}

input[type="radio"]:checked::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #ffffff;
}

input[type="checkbox"]:focus-visible,
input[type="radio"]:focus-visible {
  outline: none;
}

input[type="checkbox"]:focus-visible::before,
input[type="radio"]:focus-visible::before {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.check-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

label.check-label {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 4px 12px 4px 4px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
}

label.check-label:hover {
  border-color: var(--border-strong);
  background: #f1f5f9;
}

.form-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.inline-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.inline-actions form,
form.inline {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
}

/* Buttons & Interactive 5-States */
button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 36px;
  min-width: 44px;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #ffffff;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

button:hover,
.btn:hover {
  background: var(--accent-hover);
}

button:active,
.btn:active {
  background: var(--accent-active);
}

button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button:disabled,
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

button.secondary,
.btn-secondary {
  background: var(--bg-subtle);
  color: #1e293b;
  border-color: var(--border-strong);
}

button.secondary:hover,
.btn-secondary:hover {
  background: #e2e8f0;
  border-color: #94a3b8;
}

button.secondary:active,
.btn-secondary:active {
  background: #cbd5e1;
}

button.danger,
.btn-danger {
  background: var(--danger);
  color: #ffffff;
}

button.danger:hover,
.btn-danger:hover {
  background: var(--danger-hover);
}

button.danger:active,
.btn-danger:active {
  background: var(--danger-active);
}

button.success,
.btn-success {
  background: var(--success);
  color: #ffffff;
}

button.success:hover,
.btn-success:hover {
  background: var(--success-hover);
}

.action-link {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  min-width: 32px;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  color: var(--accent);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
}

.action-link:hover {
  background: #eff6ff;
  text-decoration: underline;
}

.action-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Tables */
.table-wrap {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-surface);
  font-size: 13px;
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--bg-subtle);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 12px;
  white-space: nowrap;
}

tbody tr:last-child td {
  border-bottom: 0;
}

tbody tr:hover td {
  background: #f8fafc;
}

.cell-wrap {
  min-width: 180px;
  max-width: 340px;
  overflow-wrap: break-word;
  word-break: normal;
}

.mono.cell-wrap {
  overflow-wrap: anywhere;
}

.empty-cell,
.empty-state {
  text-align: center;
  padding: 28px 16px;
  color: var(--text-muted);
  font-size: 13px;
  background: var(--bg-subtle);
}

.empty-state {
  border: 1px dashed var(--border-strong);
  border-radius: 8px;
}

/* Status Pills */
.status {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid #cbd5e1;
  background: #f1f5f9;
  color: #334155;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
}

.status.active,
.status.sent,
.status.approved,
.status.joined,
.status.ok {
  background: #dcfce7;
  border-color: #bbf7d0;
  color: #166534;
}

.status.pending,
.status.pending_audit,
.status.pending_reply,
.status.sending,
.status.new {
  background: #fef3c7;
  border-color: #fde68a;
  color: #92400e;
}

.status.paused,
.status.cooled,
.status.queued {
  background: #e0f2fe;
  border-color: #bae6fd;
  color: #075985;
}

.status.expired_to_reserve,
.status.reserve,
.status.duplicate {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: #334155;
}

.status.cancelled,
.status.disabled,
.status.inactive,
.status.login_required {
  background: #f3f4f6;
  border-color: #d1d5db;
  color: #4b5563;
}

.status.flood_wait,
.status.failed,
.status.banned,
.status.rejected,
.status.blocked,
.status.proxy_error,
.status.limited,
.status.kicked,
.status.bot_blocked,
.status.token_revoked {
  background: #fee2e2;
  border-color: #fecaca;
  color: #991b1b;
}

.status.ai_recommended {
  background: #dbeafe;
  border-color: #93c5fd;
  color: #1e40af;
  font-weight: 600;
}

/* Text Helpers & Lists */
.muted {
  color: var(--text-muted);
  font-size: 12px;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
}

.subpanel {
  margin-top: 12px;
  padding: 16px 0 4px;
  border-top: 1px solid var(--border);
}

.pool-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pool-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.pool-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.pool-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.msg-history {
  margin: 8px 0;
  padding: 4px 0 4px 12px;
  border-left: 2px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 180px;
  overflow-y: auto;
}

.msg-bubble {
  font-size: 12px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.msg-in {
  color: var(--text-primary);
}

.msg-out {
  color: #1e40af;
}

.compact-list {
  margin: 0;
  padding-left: 16px;
  font-size: 12px;
}

.compact-list li {
  margin-bottom: 4px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-subtle);
  font-size: 12px;
  color: var(--text-secondary);
}

.compact-input {
  min-width: 110px;
  width: auto;
}

.login-shell {
  max-width: 440px;
  margin: 8vh auto;
}

/* Mobile Responsive Hardening (390x844) */
@media (max-width: 768px) {
  .topbar {
    padding: 12px 16px;
  }

  main {
    padding: 16px;
  }

  .card {
    padding: 16px;
  }

  .grid,
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .brand {
    min-height: 44px;
  }

  .nav-link {
    min-height: 44px;
    padding: 10px 12px;
  }

  button,
  .btn,
  .action-link,
  input:not([type="checkbox"]):not([type="radio"]),
  select,
  .check-label {
    min-height: 44px;
  }

  input[type="checkbox"],
  input[type="radio"] {
    min-width: 44px;
    min-height: 44px;
  }

  .inline-actions form,
  form.inline {
    width: 100%;
  }

  .compact-input {
    width: 100%;
  }
}