:root {
  /* Dark (black) mode by default */
  color-scheme: dark;

  --ui-font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica,
    Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --ui-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;

  --ui-bg: #06080d;
  --ui-surface: #0b0f18;
  --ui-surface-2: #111827;
  --ui-surface-3: #161f31;
  --ui-text: #f3f6fb;
  --ui-text-secondary: #a4b1c8;
  --ui-text-tertiary: #7c8ba7;
  --ui-border: #222d43;
  --ui-border-strong: #2f3d5a;

  --ui-accent: #ff3448;
  --ui-accent-strong: #ff6875;
  --ui-accent-soft: rgba(255, 52, 72, 0.15);
  --ui-accent-soft-strong: rgba(255, 52, 72, 0.22);

  --ui-success: #16a34a;
  --ui-warning: #d97706;
  --ui-danger: #dc2626;

  --ui-radius-sm: 10px;
  --ui-radius: 14px;
  --ui-radius-lg: 18px;

  --ui-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.32);
  --ui-shadow: 0 20px 46px rgba(0, 0, 0, 0.5);
  --ui-shadow-lg: 0 28px 72px rgba(0, 0, 0, 0.58);

  --ui-focus-ring: 0 0 0 3px rgba(255, 52, 72, 0.28);

  --ui-container: 1080px;

  --ui-space-1: 4px;
  --ui-space-2: 8px;
  --ui-space-3: 12px;
  --ui-space-4: 16px;
  --ui-space-5: 20px;
  --ui-space-6: 24px;
  --ui-space-8: 32px;
  --ui-space-10: 40px;
}

/* Optional: force light mode per page by setting <html data-ui-theme="light"> */
:root[data-ui-theme="light"] {
  color-scheme: light;
  --ui-bg: #f7f7f8;
  --ui-surface: #ffffff;
  --ui-surface-2: #f3f4f6;
  --ui-surface-3: #e8edf5;
  --ui-text: #111827;
  --ui-text-secondary: #4b5563;
  --ui-text-tertiary: #6b7280;
  --ui-border: rgba(17, 24, 39, 0.12);
  --ui-border-strong: rgba(17, 24, 39, 0.2);

  --ui-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --ui-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
  --ui-shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);

  --ui-accent-soft: rgba(255, 52, 72, 0.12);
  --ui-accent-soft-strong: rgba(255, 52, 72, 0.2);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--ui-bg);
  color: var(--ui-text);
  font-family: var(--ui-font-sans);
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

.ui-requires-admin {
  display: none !important;
}

:focus-visible {
  outline: none;
  box-shadow: var(--ui-focus-ring);
  border-radius: var(--ui-radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}

.ui-container {
  width: min(var(--ui-container), 100%);
  margin: 0 auto;
  padding: var(--ui-space-8) var(--ui-space-4);
}

@media (max-width: 640px) {
  .ui-container {
    padding: var(--ui-space-6) var(--ui-space-3);
  }
}

.ui-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--ui-space-4);
}

.ui-title {
  margin: 0;
  font-size: 1.95rem;
  font-weight: 780;
  letter-spacing: -0.02em;
  line-height: 1.12;
}

.ui-subtitle {
  margin: var(--ui-space-2) 0 0;
  color: var(--ui-text-secondary);
  max-width: 70ch;
}

.ui-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--ui-space-4);
}

.ui-card {
  display: flex;
  flex-direction: column;
  gap: var(--ui-space-2);
  padding: var(--ui-space-5);
  border-radius: var(--ui-radius);
  border: 1px solid var(--ui-border);
  background: var(--ui-surface);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02), var(--ui-shadow-sm);
  text-decoration: none;
  transition: transform 150ms ease, box-shadow 150ms ease, border-color 150ms ease;
}

.ui-card__tag {
  margin-top: auto;
  align-self: flex-start;
}

.ui-card:hover {
  box-shadow: var(--ui-shadow);
  border-color: var(--ui-border-strong);
  transform: translateY(-2px);
  text-decoration: none;
}

.ui-card:active {
  transform: translateY(0);
}

.ui-card__title {
  margin: 0 0 var(--ui-space-2);
  font-size: 1.1rem;
  font-weight: 760;
  letter-spacing: -0.01em;
}

.ui-card__desc {
  margin: 0 0 var(--ui-space-3);
  color: var(--ui-text-secondary);
}

.ui-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--ui-border);
  background: var(--ui-surface-2);
  color: var(--ui-text-secondary);
  font-size: 0.82rem;
  font-weight: 650;
}

.ui-badge--accent {
  border-color: rgba(255, 52, 72, 0.35);
  background: var(--ui-accent-soft);
  color: var(--ui-text);
}

.ui-btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ui-border);
  background: var(--ui-surface);
  color: var(--ui-text);
  padding: 10px 14px;
  border-radius: var(--ui-radius-sm);
  cursor: pointer;
  font-weight: 700;
  box-shadow: var(--ui-shadow-sm);
  text-decoration: none;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease,
    border-color 120ms ease;
}

.ui-btn:hover {
  box-shadow: var(--ui-shadow);
  border-color: var(--ui-border-strong);
}

.ui-btn:active {
  transform: translateY(1px);
}

.ui-btn--primary {
  background: var(--ui-accent-soft);
  border-color: rgba(255, 52, 72, 0.5);
}

.ui-btn--primary:hover {
  background: var(--ui-accent-soft-strong);
  border-color: rgba(255, 52, 72, 0.65);
}

.ui-btn--danger {
  background: rgba(220, 38, 38, 0.12);
  border-color: rgba(220, 38, 38, 0.45);
}

.ui-btn--danger:hover {
  border-color: rgba(220, 38, 38, 0.65);
}

.ui-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
}

/* Page-level back button (top-left) */
body.ui-has-back {
  padding-top: calc(env(safe-area-inset-top, 0px) + var(--ui-space-4) + 44px);
}

body.ui-has-auth {
  padding-top: calc(env(safe-area-inset-top, 0px) + var(--ui-space-4) + 44px);
}

.ui-auth {
  position: fixed;
  top: calc(env(safe-area-inset-top, 0px) + var(--ui-space-4));
  right: calc(env(safe-area-inset-right, 0px) + var(--ui-space-4));
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: var(--ui-space-2);
  flex-wrap: wrap;
}

.ui-auth .ui-auth-quota {
  min-width: 108px;
  justify-content: center;
  font-variant-numeric: tabular-nums;
}

.ui-auth .ui-auth-quota.ui-auth-quota--limited {
  border-color: rgba(220, 38, 38, 0.6);
  background: rgba(220, 38, 38, 0.16);
  color: #fecaca;
}

[data-ui-theme="light"] .ui-auth .ui-auth-quota.ui-auth-quota--limited {
  background: rgba(220, 38, 38, 0.12);
  color: #b91c1c;
}

.ui-auth.ui-auth--slot {
  position: static;
  inset: auto;
  z-index: auto;
  display: grid;
  align-items: start;
  justify-items: stretch;
}

.ui-auth.ui-auth--slot .ui-btn {
  width: 100%;
  justify-content: center;
}

.ui-auth.ui-auth--slot .ui-auth-quota {
  width: 100%;
}

.ui-auth-block {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.6);
  display: grid;
  place-items: center;
  padding: var(--ui-space-4);
}

.ui-auth-block__card {
  width: min(560px, 100%);
  border-radius: var(--ui-radius-lg);
  border: 1px solid var(--ui-border);
  background: var(--ui-surface);
  box-shadow: var(--ui-shadow-lg);
  padding: var(--ui-space-5);
  display: grid;
  gap: var(--ui-space-2);
}

.ui-auth-block__title {
  font-weight: 800;
  letter-spacing: -0.01em;
}

.ui-auth-block__message {
  color: var(--ui-text-secondary);
}

.ui-back {
  position: fixed;
  top: calc(env(safe-area-inset-top, 0px) + var(--ui-space-4));
  left: calc(env(safe-area-inset-left, 0px) + var(--ui-space-4));
  z-index: 1000;
  padding: 8px 12px;
}

/* Login screen should not expose a back action before authentication */
.auth-card .auth-header__top > .ui-btn {
  display: none !important;
}

.ui-field {
  display: grid;
  gap: 6px;
}

.ui-label {
  font-size: 0.9rem;
  font-weight: 650;
}

.ui-help {
  color: var(--ui-text-secondary);
  font-size: 0.85rem;
}

.ui-input,
.ui-select,
.ui-textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--ui-radius-sm);
  border: 1px solid var(--ui-border);
  background: var(--ui-surface);
  color: var(--ui-text);
  font-size: 1rem;
}

.ui-input:focus-visible,
.ui-select:focus-visible,
.ui-textarea:focus-visible {
  border-color: rgba(255, 52, 72, 0.55);
}

.ui-textarea {
  min-height: 120px;
  resize: vertical;
  font-family: var(--ui-font-sans);
}

.ui-pre,
pre.ui-pre {
  border-radius: var(--ui-radius);
  border: 1px solid var(--ui-border);
  background: var(--ui-surface-2);
  padding: var(--ui-space-4);
  overflow: auto;
  font-family: var(--ui-font-mono);
  font-size: 0.95rem;
  line-height: 1.5;
}

.ui-kbd {
  font-family: var(--ui-font-mono);
  border: 1px solid var(--ui-border);
  background: var(--ui-surface-2);
  padding: 2px 6px;
  border-radius: 8px;
  font-size: 0.9em;
}

/* App shell (sidebar layout) */
.ui-shell {
  min-height: 100vh;
  display: grid;
  position: relative;
  --ui-sidebar-expanded-width: 286px;
  --ui-sidebar-collapsed-width: 20px;
  --ui-sidebar-width: var(--ui-sidebar-expanded-width);
  grid-template-columns: var(--ui-sidebar-width) minmax(0, 1fr);
  transition: grid-template-columns 180ms ease;
}

.ui-shell[data-sidebar-collapsed="true"] {
  --ui-sidebar-width: var(--ui-sidebar-collapsed-width);
}

@media (max-width: 900px) {
  .ui-shell {
    --ui-sidebar-width: 100%;
    grid-template-columns: 1fr;
  }
}

.ui-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  border-right: 1px solid var(--ui-border);
  background: var(--ui-surface);
  transition: border-color 180ms ease;
}

@media (max-width: 900px) {
  .ui-sidebar {
    position: relative;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--ui-border);
  }
}

.ui-sidebarToggle {
  appearance: none;
  padding: 0;
  position: fixed;
  top: 50%;
  left: calc(env(safe-area-inset-left, 0px) + var(--ui-sidebar-width) - 12px);
  transform: translateY(-50%);
  z-index: 1100;
  width: 24px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--ui-border);
  border-left: none;
  background: var(--ui-surface);
  color: var(--ui-text-secondary);
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: var(--ui-shadow-sm);
  opacity: 0;
  transition: left 180ms ease, opacity 160ms ease, border-color 120ms ease, box-shadow 120ms ease, background 120ms ease, color 120ms ease;
}

.ui-shell .ui-sidebar:hover ~ .ui-sidebarToggle,
.ui-shell .ui-sidebarToggle:hover,
.ui-shell .ui-sidebarToggle:focus-visible {
  opacity: 1;
  color: var(--ui-text);
}

.ui-shell[data-sidebar-collapsed="true"] .ui-sidebarToggle {
  opacity: 0.35;
}

.ui-sidebarToggle:hover {
  background: var(--ui-surface-2);
  border-color: rgba(255, 52, 72, 0.45);
  box-shadow: var(--ui-shadow);
}

@media (max-width: 900px) {
  .ui-sidebarToggle {
    display: none;
  }
}

.ui-sidebar__scroll {
  height: 100%;
  overflow: auto;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 0;
  transition: opacity 160ms ease, visibility 160ms ease, transform 160ms ease;
}

.ui-shell[data-sidebar-collapsed="true"] .ui-sidebar__scroll {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(-16px);
}

@media (max-width: 900px) {
  .ui-shell[data-sidebar-collapsed="true"] .ui-sidebar__scroll {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }
}

.ui-sidebar__brand {
  display: grid;
  gap: var(--ui-space-2);
  text-decoration: none;
  padding: var(--ui-space-6) var(--ui-space-4) var(--ui-space-4);
  border-bottom: 1px solid var(--ui-border);
}

.ui-sidebar__brand:hover {
  background: rgba(255, 255, 255, 0.01);
}

.ui-sidebar__brandLogo {
  width: 150px;
  max-width: 100%;
  height: auto;
  display: block;
}

.ui-sidebar__brandText {
  display: grid;
  gap: 2px;
  line-height: 1.2;
}

.ui-sidebar__brandTitle {
  color: var(--ui-text-secondary);
  font-size: 0.7rem;
  font-weight: 760;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.ui-sidebar__brandSub {
  color: var(--ui-text-tertiary);
  font-size: 0.82rem;
}

.ui-workspace {
  position: relative;
  padding: var(--ui-space-3);
  border-bottom: 1px solid var(--ui-border);
}

.ui-workspace__trigger {
  width: 100%;
  min-height: 46px;
  border: 1px solid transparent;
  border-radius: var(--ui-radius-sm);
  background: transparent;
  color: var(--ui-text);
  display: flex;
  align-items: center;
  gap: var(--ui-space-3);
  padding: 0 var(--ui-space-3);
  text-align: left;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease, color 120ms ease;
}

.ui-workspace__trigger:hover {
  background: var(--ui-surface-2);
  border-color: rgba(255, 255, 255, 0.04);
}

.ui-workspace__trigger:focus-visible {
  border-color: rgba(255, 52, 72, 0.42);
}

.ui-workspace__avatar {
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  border-radius: 8px;
  border: 1px solid var(--ui-border-strong);
  background: var(--ui-surface);
  overflow: hidden;
  display: grid;
  place-items: center;
}

.ui-workspace__logo {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  padding: 2px;
}

.ui-workspace__avatar--mono {
  background: var(--ui-surface-3);
}

.ui-workspace__monogram {
  font-size: 0.64rem;
  line-height: 1;
  letter-spacing: 0.04em;
  font-weight: 780;
  color: var(--ui-text);
  text-transform: uppercase;
}

.ui-workspace__name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.95rem;
  line-height: 1.2;
  font-weight: 680;
}

.ui-workspace__chevron {
  width: 16px;
  height: 16px;
  margin-left: auto;
  color: var(--ui-text-tertiary);
  display: grid;
  place-items: center;
  transition: transform 120ms ease, color 120ms ease;
}

.ui-workspace.is-open .ui-workspace__chevron {
  transform: rotate(180deg);
  color: var(--ui-text);
}

.ui-workspace__menu {
  position: absolute;
  top: calc(100% - 6px);
  left: var(--ui-space-3);
  right: var(--ui-space-3);
  z-index: 25;
  display: grid;
  gap: 4px;
  padding: var(--ui-space-2);
  border-radius: var(--ui-radius-sm);
  border: 1px solid var(--ui-border-strong);
  background: var(--ui-surface);
  box-shadow: var(--ui-shadow);
}

.ui-workspace__menu[hidden] {
  display: none;
}

.ui-workspace__item,
.ui-workspace__manage,
.ui-workspace__retry {
  appearance: none;
  width: 100%;
  min-height: 40px;
  display: flex;
  align-items: center;
  gap: var(--ui-space-2);
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--ui-text-secondary);
  padding: 0 var(--ui-space-2);
  text-decoration: none;
  cursor: pointer;
  text-align: left;
  transition: background 120ms ease, border-color 120ms ease, color 120ms ease;
}

.ui-workspace__item:hover,
.ui-workspace__manage:hover,
.ui-workspace__retry:hover {
  background: var(--ui-surface-2);
  border-color: rgba(255, 255, 255, 0.04);
  color: var(--ui-text);
}

.ui-workspace__item:focus-visible,
.ui-workspace__manage:focus-visible,
.ui-workspace__retry:focus-visible {
  border-color: rgba(255, 52, 72, 0.42);
}

.ui-workspace__item[aria-checked="true"] {
  background: var(--ui-accent-soft);
  border-color: rgba(255, 52, 72, 0.38);
  color: var(--ui-text);
}

.ui-workspace__itemName {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.9rem;
  font-weight: 650;
}

.ui-workspace__check {
  margin-left: auto;
  color: var(--ui-accent-strong);
  font-size: 0.95rem;
  font-weight: 780;
}

.ui-workspace__separator {
  height: 1px;
  background: var(--ui-border);
  margin: 2px 0;
}

.ui-workspace__empty {
  padding: var(--ui-space-2);
  color: var(--ui-text-secondary);
  font-size: 0.84rem;
  line-height: 1.35;
}

.ui-workspace__status {
  margin-top: var(--ui-space-2);
  padding: 0 var(--ui-space-1);
  color: var(--ui-danger);
  font-size: 0.78rem;
  line-height: 1.35;
}

.ui-workspace.is-empty .ui-workspace__name,
.ui-workspace.is-error .ui-workspace__name {
  color: var(--ui-text-secondary);
}

.ui-workspace.is-error .ui-workspace__trigger {
  border-color: rgba(220, 38, 38, 0.35);
}

.ui-workspace__trigger--skeleton {
  cursor: default;
  pointer-events: none;
}

.ui-workspace__skeletonAvatar {
  width: 24px;
  height: 24px;
  border-radius: 8px;
  background: var(--ui-surface-2);
}

.ui-workspace__skeletonLine {
  flex: 1;
  max-width: 140px;
  height: 12px;
  border-radius: 999px;
  background: var(--ui-surface-2);
}

.ui-workspace__skeletonDot {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: var(--ui-surface-2);
  margin-left: auto;
}

.ui-workspace.is-loading .ui-workspace__skeletonAvatar,
.ui-workspace.is-loading .ui-workspace__skeletonLine,
.ui-workspace.is-loading .ui-workspace__skeletonDot {
  animation: ui-workspace-pulse 1.4s ease-in-out infinite;
}

@keyframes ui-workspace-pulse {
  0%,
  100% {
    opacity: 0.58;
  }
  50% {
    opacity: 1;
  }
}

.ui-nav {
  display: grid;
  gap: var(--ui-space-5);
  padding: var(--ui-space-4) var(--ui-space-3);
}

.ui-nav__section {
  display: grid;
  gap: var(--ui-space-2);
}

.ui-nav__heading {
  margin: 0;
  padding: 0 var(--ui-space-2);
  color: var(--ui-text-tertiary);
  font-size: 0.68rem;
  font-weight: 760;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.ui-nav__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 4px;
}

.ui-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--ui-space-2);
  padding: 10px 12px;
  border-radius: var(--ui-radius-sm);
  border: 1px solid transparent;
  text-decoration: none;
  color: var(--ui-text-secondary);
  transition: background 120ms ease, border-color 120ms ease, color 120ms ease;
}

.ui-nav__link:hover {
  background: var(--ui-surface-2);
  border-color: rgba(255, 255, 255, 0.04);
  color: var(--ui-text);
}

.ui-nav__link[aria-current="page"] {
  background: var(--ui-accent-soft);
  border-color: rgba(255, 52, 72, 0.42);
  color: var(--ui-text);
}

.ui-nav__link[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: var(--ui-accent);
}

.ui-nav__icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  color: var(--ui-text-tertiary);
}

.ui-nav__link[aria-current="page"] .ui-nav__icon {
  color: var(--ui-text);
}

.ui-nav__item--sub .ui-nav__link {
  padding-left: 34px;
}

.ui-sidebar__footer {
  display: grid;
  gap: var(--ui-space-2);
  margin: var(--ui-space-3);
  padding: var(--ui-space-3);
  border-radius: var(--ui-radius);
  border: 1px solid var(--ui-border);
  background: var(--ui-surface-2);
}

.ui-main {
  min-width: 0;
  padding: var(--ui-space-8) var(--ui-space-6);
}

@media (max-width: 900px) {
  .ui-main {
    padding: var(--ui-space-6) var(--ui-space-3);
  }
}

.ui-main__content {
  width: min(var(--ui-container), 100%);
  margin: 0 auto;
}

/* Scrollbars */
*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

*::-webkit-scrollbar-track {
  background: transparent;
}

*::-webkit-scrollbar-thumb {
  background: rgba(124, 139, 167, 0.3);
  border-radius: 999px;
}

*::-webkit-scrollbar-thumb:hover {
  background: rgba(124, 139, 167, 0.5);
}
