/* XZZSB AI Hub appearance layer — light by default, user-selectable. */
:root,
html[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f7fb;
  --bg-soft: #edf2f7;
  --panel: #ffffff;
  --panel-2: #f8fafc;
  --panel-3: #eef3f8;
  --panel2: #f8fafc;
  --line: rgba(15, 23, 42, 0.1);
  --line-strong: rgba(15, 23, 42, 0.18);
  --text: #172033;
  --text-soft: #334155;
  --muted: #64748b;
  --subtle: #94a3b8;
  --success: #15936d;
  --danger: #dc4c64;
  --warning: #d69217;
  --surface-hover: rgba(15, 23, 42, 0.055);
  --surface-active: rgba(var(--accent-rgb), 0.11);
  --sidebar-surface: #f8fafc;
  --glass: rgba(255, 255, 255, 0.86);
  --glass-strong: rgba(255, 255, 255, 0.96);
  --input-bg: #ffffff;
  --user-bubble: #e9f3ef;
  --user-bubble-text: #20342d;
  --modal-mask: rgba(30, 41, 59, 0.34);
  --shadow-sm: 0 8px 24px rgba(30, 41, 59, 0.08);
  --shadow-lg: 0 30px 80px rgba(30, 41, 59, 0.16);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #090c12;
  --bg-soft: #0e1219;
  --panel: #121720;
  --panel-2: #181e29;
  --panel-3: #202735;
  --panel2: #181e29;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f4f6fb;
  --text-soft: #d4dae5;
  --muted: #99a3b5;
  --subtle: #6f798a;
  --success: #34d399;
  --danger: #fb7185;
  --warning: #fbbf24;
  --surface-hover: rgba(255, 255, 255, 0.055);
  --surface-active: rgba(var(--accent-rgb), 0.14);
  --sidebar-surface: #0d1118;
  --glass: rgba(9, 12, 18, 0.84);
  --glass-strong: rgba(18, 23, 32, 0.96);
  --input-bg: #0b0f16;
  --user-bubble: #222a37;
  --user-bubble-text: #eef2f7;
  --modal-mask: rgba(2, 4, 8, 0.68);
  --shadow-sm: 0 10px 30px rgba(0, 0, 0, 0.22);
  --shadow-lg: 0 35px 100px rgba(0, 0, 0, 0.5);
}

html[data-accent="green"],
:root {
  --accent: #368c72;
  --accent-bright: #28765f;
  --accent-secondary: #4f9f80;
  --accent-rgb: 54, 140, 114;
  --accent-gradient: linear-gradient(135deg, #368c72, #4aa0a0);
}

html[data-accent="blue"] {
  --accent: #3478d4;
  --accent-bright: #2464bd;
  --accent-secondary: #2aa2c9;
  --accent-rgb: 52, 120, 212;
  --accent-gradient: linear-gradient(135deg, #3478d4, #2aa2c9);
}

html[data-accent="violet"] {
  --accent: #7c5ac7;
  --accent-bright: #6846b5;
  --accent-secondary: #4f75d9;
  --accent-rgb: 124, 90, 199;
  --accent-gradient: linear-gradient(135deg, #7c5ac7, #4f75d9);
}

html[data-accent="orange"] {
  --accent: #cf7a36;
  --accent-bright: #b96628;
  --accent-secondary: #d9a33f;
  --accent-rgb: 207, 122, 54;
  --accent-gradient: linear-gradient(135deg, #cf7a36, #d9a33f);
}

:root {
  --text-muted: var(--muted);
  --sidebar-bg: var(--sidebar-surface);
}

html,
body {
  background: var(--bg);
  color: var(--text);
}

body {
  font-size: 14px;
}

::selection {
  background: rgba(var(--accent-rgb), 0.22);
}

input,
textarea,
select {
  accent-color: var(--accent);
}

.eyebrow,
.range-value,
.route-card code {
  color: var(--accent-bright) !important;
}

.button.primary,
.admin-button.primary,
.primary-button,
.landing-brand > span,
.app-brand > span,
.admin-brand > span,
.auth-brand > span,
.welcome-mark > span,
.message-avatar,
.user-avatar,
.admin-user > span,
.console-header nav > button span,
.brand-mark {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 12px 30px rgba(var(--accent-rgb), 0.2);
}

.button.ghost,
.new-chat-button,
.assistant-chip,
.suggestion-grid button,
.attachment-card,
.account-summary > div,
.requirement,
.compat-card strong {
  background: var(--panel-2);
}

.button:hover,
.icon-button:hover,
.new-chat-button:hover,
.conversation-item:hover,
.conversation-item.active,
.sidebar-footer > a:hover,
.sidebar-footer > button:hover,
.model-picker:hover,
.suggestion-grid button:hover,
.message-actions button:hover,
.composer-tool:hover,
.composer-foot button:hover,
.picker-item:hover,
.picker-item.active,
.conversation-menu button:hover,
.admin-sidebar nav button:hover,
.admin-sidebar nav button.active,
.sidebar-foot a:hover,
.row-actions button:hover,
.provider-card footer button:hover,
.console-nav a:hover,
.console-nav a.active,
.table-actions button:hover,
.docs-menu button:hover,
.docs-menu button.active {
  background: var(--surface-hover);
}

.conversation-item.active,
.assistant-chip.active,
.admin-sidebar nav button.active,
.metric-card.accent,
.admin-metric.accent {
  background: linear-gradient(
    135deg,
    rgba(var(--accent-rgb), 0.14),
    rgba(var(--accent-rgb), 0.045)
  );
  border-color: rgba(var(--accent-rgb), 0.25);
}

/* Appearance control */
.appearance-button {
  min-width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--panel-2);
  color: var(--muted);
  padding: 0 11px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: 0.18s;
}

.appearance-button:hover,
.appearance-button[aria-expanded="true"] {
  color: var(--text);
  border-color: rgba(var(--accent-rgb), 0.35);
  background: rgba(var(--accent-rgb), 0.08);
}

.appearance-symbol {
  width: 18px;
  font-size: 17px;
  line-height: 1;
  text-align: center;
}

.appearance-popover {
  position: fixed;
  z-index: 500;
  border: 1px solid var(--line-strong);
  border-radius: 17px;
  background: var(--glass-strong);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(24px);
  padding: 15px;
  opacity: 0;
  transform: translateY(-7px) scale(0.98);
  transition: 0.16s ease;
}

.appearance-popover.open {
  opacity: 1;
  transform: none;
}

.appearance-popover-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 1px 1px 13px;
  border-bottom: 1px solid var(--line);
}

.appearance-popover-head > div {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.appearance-popover-head strong {
  font-size: 14px;
}

.appearance-popover-head small {
  color: var(--subtle);
  font-size: 11px;
}

.appearance-popover-head button {
  width: 28px;
  height: 28px;
  border: 0;
  border-radius: 8px;
  background: var(--surface-hover);
  color: var(--muted);
  font-size: 20px;
  cursor: pointer;
}

.appearance-group {
  margin-top: 14px;
}

.appearance-group > span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
}

.appearance-segmented {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
  padding: 4px;
  border-radius: 11px;
  background: var(--bg-soft);
}

.appearance-segmented button {
  height: 34px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font-size: 11px;
  cursor: pointer;
}

.appearance-segmented button.active {
  background: var(--panel);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.appearance-swatches {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 7px;
}

.appearance-swatches button {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel-2);
  color: var(--muted);
  padding: 8px 4px 7px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  font-size: 9px;
  cursor: pointer;
}

.appearance-swatches button.active {
  border-color: currentColor;
  color: var(--text);
  box-shadow: inset 0 0 0 1px currentColor;
}

.appearance-swatches i {
  width: 24px;
  height: 24px;
  border-radius: 8px;
  display: block;
}

.appearance-swatches .green i {
  background: linear-gradient(135deg, #368c72, #4aa0a0);
}
.appearance-swatches .blue i {
  background: linear-gradient(135deg, #3478d4, #2aa2c9);
}
.appearance-swatches .violet i {
  background: linear-gradient(135deg, #7c5ac7, #4f75d9);
}
.appearance-swatches .orange i {
  background: linear-gradient(135deg, #cf7a36, #d9a33f);
}

/* Landing and login */
.landing-page {
  background:
    radial-gradient(
      circle at 68% 4%,
      rgba(var(--accent-rgb), 0.13),
      transparent 35%
    ),
    radial-gradient(
      circle at 90% 70%,
      rgba(42, 162, 201, 0.08),
      transparent 28%
    ),
    var(--bg);
}

.landing-nav-actions {
  display: flex;
  align-items: center;
  gap: 9px;
}

.landing-copy h1 {
  font-size: clamp(50px, 6vw, 86px);
}

.landing-copy h1 em {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
}

.orb-a {
  background: rgba(var(--accent-rgb), 0.16);
}

.preview-window,
.auth-card,
.install-panel {
  background: var(--glass);
  box-shadow: var(--shadow-lg);
}

.preview-head i,
.preview-side span {
  background: var(--panel-3);
}

.preview-side b {
  background: linear-gradient(
    90deg,
    rgba(var(--accent-rgb), 0.2),
    rgba(var(--accent-rgb), 0.06)
  );
}

.preview-message.user,
.preview-composer {
  background: var(--panel-2);
}

.auth-page {
  background:
    radial-gradient(
      circle at 50% 0,
      rgba(var(--accent-rgb), 0.14),
      transparent 38%
    ),
    var(--bg);
}

.auth-card {
  padding: 34px;
}

.auth-card h1 {
  font-size: 32px;
}

.auth-card label,
.modal label {
  font-size: 13px;
}

.auth-card input,
.modal input,
.modal select,
.modal textarea,
.field-input,
.admin-form input,
.admin-form select,
.admin-form textarea,
.toolbar input,
.toolbar select {
  background: var(--input-bg);
}

.auth-card > .muted,
.auth-help {
  font-size: 12px !important;
}

.form-error {
  color: var(--danger);
}

.auth-sso-panel {
  margin: 22px 0 0;
  padding: 16px;
  border: 1px solid rgba(var(--accent-rgb), 0.2);
  border-radius: 15px;
  background: rgba(var(--accent-rgb), 0.065);
}

.auth-sso-panel strong {
  display: block;
  margin-bottom: 5px;
  font-size: 14px;
}

.auth-sso-panel p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.auth-diagnostic-link {
  display: block;
  margin-top: 13px;
  color: var(--accent-bright);
  text-align: center;
  font-size: 11px;
  text-decoration: none;
}

.sso-diagnostic-card {
  width: min(100%, 620px);
}

.diagnostic-status {
  margin: 22px 0 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 13px;
  display: flex;
  align-items: center;
  gap: 11px;
}

.diagnostic-status > span {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-weight: 900;
}

.diagnostic-status.success {
  border-color: rgba(21, 147, 109, 0.24);
  background: rgba(21, 147, 109, 0.07);
}

.diagnostic-status.success > span {
  background: rgba(21, 147, 109, 0.13);
  color: var(--success);
}

.diagnostic-status.warning {
  border-color: rgba(214, 146, 23, 0.25);
  background: rgba(214, 146, 23, 0.07);
}

.diagnostic-status.warning > span {
  background: rgba(214, 146, 23, 0.14);
  color: var(--warning);
}

.diagnostic-status > div {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.diagnostic-status strong {
  font-size: 14px;
}

.diagnostic-status small {
  color: var(--muted);
  font-size: 11px;
}

.diagnostic-list {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}

.diagnostic-list > div {
  min-height: 44px;
  padding: 9px 12px;
  display: grid;
  grid-template-columns: 105px 1fr;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.diagnostic-list > div:last-child {
  border-bottom: 0;
}

.diagnostic-list dt {
  color: var(--muted);
  font-size: 11px;
}

.diagnostic-list dd {
  margin: 0;
  color: var(--text-soft);
  font-size: 12px;
  word-break: break-all;
}

.diagnostic-error {
  color: var(--danger) !important;
}

.diagnostic-help {
  margin-top: 15px;
  padding: 14px;
  border-radius: 14px;
  background: var(--panel-2);
}

.diagnostic-help strong {
  font-size: 13px;
}

.diagnostic-help ol {
  margin: 9px 0 0;
  padding-left: 21px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}

.diagnostic-help code {
  color: var(--accent-bright);
}

.diagnostic-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 17px;
}

.auth-appearance {
  position: fixed;
  right: 20px;
  top: 20px;
  z-index: 20;
}

/* Chat workspace */
.chat-sidebar,
.admin-sidebar,
.console-nav {
  background: var(--sidebar-surface);
}

.chat-topbar,
.admin-topbar,
.console-header {
  background: var(--glass);
}

.chat-main {
  background:
    radial-gradient(
      circle at 50% -10%,
      rgba(var(--accent-rgb), 0.07),
      transparent 30%
    ),
    var(--bg);
}

.conversation-search,
.list-skeleton span,
.provider-stats div,
.route-target,
.checkbox-grid label {
  background: var(--panel-2);
}

.conversation-label,
.conversation-item .conversation-time,
.app-brand small,
.model-picker small {
  font-size: 11px;
}

.conversation-item .conversation-name,
.sidebar-footer > a,
.sidebar-footer > button,
.model-picker strong {
  font-size: 13px;
}

.sidebar-footer .user-summary strong {
  font-size: 12px;
}

.sidebar-footer .user-summary small {
  font-size: 10px;
}

.assistant-chip {
  font-size: 12px;
}

.suggestion-grid button {
  min-height: 96px;
  padding: 17px;
}

.suggestion-grid strong {
  font-size: 14px;
}

.suggestion-grid span {
  font-size: 12px;
  line-height: 1.5;
}

.message-content {
  font-size: 15px;
  line-height: 1.82;
}

.message.user .message-content {
  background: var(--user-bubble);
  border-color: var(--line);
  color: var(--user-bubble-text);
}

.message-actions button,
.message-meta,
.attachment-card,
.reasoning-box summary {
  font-size: 11px;
}

.inline-code {
  background: rgba(var(--accent-rgb), 0.09);
  color: var(--accent-bright);
}

.message-content blockquote {
  background: rgba(var(--accent-rgb), 0.07);
}

.composer-zone {
  background: linear-gradient(
    transparent,
    color-mix(in srgb, var(--bg) 88%, transparent) 24%,
    var(--bg) 54%
  );
}

.composer,
.modal,
.conversation-menu,
.toast {
  background: var(--glass-strong);
  box-shadow: var(--shadow-lg);
}

.composer {
  border-color: var(--line-strong);
}

.composer textarea {
  font-size: 15px;
}

.composer-foot,
.composer-foot button,
.composer-note,
.upload-chip,
.edit-banner {
  font-size: 11px;
}

.send-button,
.stop-button {
  background: var(--accent-gradient);
  color: #fff;
}

.stop-button span {
  background: #fff;
}

.send-button:disabled {
  background: var(--panel-3);
  color: var(--subtle);
}

.upload-chip,
.picker-item .picker-icon {
  background: var(--panel-2);
}

.modal-overlay {
  background: var(--modal-mask);
}

.modal-close {
  background: var(--surface-hover);
}

.toast > span,
.picker-item .picker-icon,
.provider-logo,
.route-target b,
.empty-state > span,
.assistant-card > span {
  background: rgba(var(--accent-rgb), 0.12);
  color: var(--accent-bright);
}

/* Developer console */
.console-page,
.admin-page {
  background: var(--bg);
}

.console-header nav > a,
.console-header nav > button,
.console-nav a {
  font-size: 13px;
}

.console-header nav > button,
.admin-button {
  background: var(--panel-2);
}

.console-heading > div > p:last-child {
  font-size: 13px;
  line-height: 1.6;
}

.metric-card,
.console-card,
.data-table-wrap,
.docs-menu,
.docs-section,
.assistant-card,
.admin-card,
.admin-table-wrap,
.provider-card,
.route-card,
.settings-section {
  background: var(--panel);
  box-shadow: var(--shadow-sm);
}

.metric-card {
  min-height: 120px;
}

.metric-card > span,
.admin-metric > span {
  font-size: 12px;
}

.metric-card strong,
.admin-metric strong {
  font-size: 27px;
}

.metric-card small,
.admin-metric small,
.console-card-head span,
.admin-card-head small {
  font-size: 11px;
}

.console-card-head h2,
.admin-card-head h2 {
  font-size: 15px;
}

.chart-column i,
.admin-chart i {
  background: var(--accent-gradient);
}

.chart-column span,
.admin-chart span {
  font-size: 9px;
}

.data-table th,
.admin-table th {
  background: var(--panel-2);
  font-size: 11px;
}

.data-table td,
.admin-table td {
  border-bottom-color: var(--line);
  font-size: 12px;
  line-height: 1.5;
}

.data-table strong,
.admin-table strong {
  font-size: 13px;
}

.data-table small,
.admin-table small,
.badge,
.status-dot {
  font-size: 10px;
}

.data-table tbody tr:hover,
.admin-table tbody tr:hover {
  background: var(--surface-hover);
}

.table-actions button,
.row-actions button,
.provider-card footer button,
.pagination button {
  font-size: 11px;
  min-height: 30px;
}

.quick-start code,
.code-sample,
.secret-row code {
  background: #10151d;
  color: #d9e1ec;
  font-size: 12px;
}

.docs-menu button,
.docs-section p,
.docs-section li,
.endpoint-line code {
  font-size: 13px;
}

.assistant-card h3,
.provider-card h3,
.route-card h3 {
  font-size: 14px;
}

.assistant-card p,
.provider-card > p,
.route-card p,
.provider-card header small,
.route-card code,
.route-target,
.provider-stats strong {
  font-size: 11px;
}

.provider-stats small,
.assistant-card footer small {
  font-size: 10px;
}

/* Admin console */
.admin-sidebar nav button {
  height: 43px;
  font-size: 13px;
}

.admin-brand strong {
  font-size: 15px;
}

.admin-brand small,
.sidebar-foot a {
  font-size: 11px;
}

.admin-user strong {
  font-size: 12px;
}

.admin-appearance {
  margin-left: auto;
}

.admin-appearance + .admin-user {
  margin-left: 10px;
}

.admin-user small {
  font-size: 10px;
}

.admin-heading > div > p {
  font-size: 13px;
  line-height: 1.6;
}

.admin-button {
  height: 39px;
  font-size: 12px;
}

.admin-metric {
  background: var(--panel);
  box-shadow: var(--shadow-sm);
}

.rank-row {
  border-bottom-color: var(--line);
  font-size: 11px;
}

.toolbar input,
.toolbar select {
  height: 39px;
  font-size: 12px;
}

.admin-form label,
.checkbox-grid label {
  font-size: 13px;
}

.admin-form input,
.admin-form select,
.admin-form textarea {
  font-size: 13px;
}

.settings-section h2 {
  font-size: 15px;
}

.detail-grid small {
  font-size: 10px;
}

.detail-grid strong,
.detail-grid code,
.error-box,
.admin-empty,
.page-loading {
  font-size: 12px;
}

.admin-sidebar-overlay {
  display: none;
}

/* Installer */
.install-shell {
  background: var(--bg);
}

.install-panel {
  border-color: var(--line);
}

.install-panel label {
  color: var(--text-soft);
}

.install-panel input {
  background: var(--input-bg);
  color: var(--text);
}

.install-hero:after {
  border-color: var(--line);
  box-shadow:
    0 0 0 50px rgba(var(--accent-rgb), 0.03),
    0 0 0 100px rgba(var(--accent-rgb), 0.018);
}

@media (max-width: 900px) {
  .appearance-button b {
    display: none;
  }

  .appearance-button {
    padding: 0 9px;
  }

  .chat-sidebar {
    box-shadow: var(--shadow-lg);
  }

  .admin-sidebar {
    top: 0;
    bottom: 0;
    height: 100dvh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
  }

  .admin-sidebar-overlay {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 45;
    background: var(--modal-mask);
    opacity: 0;
    pointer-events: none;
    transition: 0.2s;
  }

  .admin-sidebar-overlay.open {
    opacity: 1;
    pointer-events: auto;
  }
}

@media (max-width: 650px) {
  .landing-nav-actions .button {
    padding: 9px 12px;
  }

  .landing-copy h1 {
    font-size: 46px;
  }

  .appearance-popover {
    left: 10px !important;
    right: 10px;
    top: auto !important;
    bottom: max(10px, env(safe-area-inset-bottom));
    width: auto !important;
    border-radius: 19px;
    transform: translateY(15px);
  }

  .appearance-popover.open {
    transform: none;
  }

  .message-content {
    font-size: 15px;
  }

  .message.user .message-body {
    max-width: 94%;
  }

  .suggestion-grid button {
    min-height: 78px;
  }

  .auth-appearance {
    right: 12px;
    top: 12px;
  }

  .auth-card {
    padding: 26px 20px;
  }

  .diagnostic-list > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .diagnostic-actions {
    grid-template-columns: 1fr;
  }

  .metric-grid,
  .admin-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 9px;
  }

  .metric-card,
  .admin-metric {
    min-height: 108px;
    padding: 14px;
  }

  .metric-card strong,
  .admin-metric strong {
    font-size: 21px;
  }

  .console-heading h1 {
    font-size: 30px;
  }

  .admin-topbar h1 {
    font-size: 18px;
  }

  .admin-content,
  .console-content {
    padding-left: 12px;
    padding-right: 12px;
  }

  .admin-heading-actions {
    overflow-x: auto;
  }

  .admin-heading-actions .admin-button {
    min-width: max-content;
  }
}

@media (max-width: 390px) {
  .metric-grid,
  .admin-metrics {
    grid-template-columns: 1fr;
  }

  .landing-brand strong {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}