/* Token-only styling derived from the provided JSON. No new raw values introduced beyond token values. */

:root {
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;

  --neutral-white: #ffffff;
  --neutral-50: #f9fafb;
  --neutral-100: #f3f4f6;
  --neutral-150: #eef0f2;
  --neutral-200: #e5e7eb;
  --neutral-300: #d1d5db;
  --neutral-400: #9ca3af;
  --neutral-500: #6b7280;
  --neutral-600: #4b5563;
  --neutral-700: #374151;
  --neutral-800: #1f2937;
  --neutral-900: #111827;
  --neutral-black: #0b0f14;

  --accent-warning-500: #f59e0b;
  --accent-danger-500: #ef4444;
  --accent-info-500: #06b6d4;
  --accent-purple-500: #a855f7;
  --brand-g-green: #34a853;

  --shadow-sm-light: 0 1px 2px rgba(16,24,40,0.06);
  --shadow-md-light: 0 6px 16px rgba(16,24,40,0.08);

  --radius-container: 20px;
  --radius-card: 8px;
  --radius-badge: 4px;
  --radius-pill: 999px;
  --radius-avatar: 999px;

  /* spacing tokens (4px base) */
  --pad-x: 24px;
  --pad-y: 20px;
  --header-h: 56px;
  --section-gap: 16px;
  --columns-gap: 22px;
  --col-header-gap: 10px;
  --card-pad: 12px;
  --card-gap: 10px;
  --toolbar-gap: 14px;

  /* typography tokens */
  --font-ui: system-ui;
  --title-size: 20px;
  --title-lh: 28px;
  --title-w: 600;

  --hlabel-size: 12px;
  --hlabel-lh: 16px;
  --hlabel-w: 500;

  --body-size: 13px;
  --body-lh: 18px;
  --body-w: 500;

  --meta-size: 11px;
  --meta-lh: 14px;
  --meta-w: 500;

  /* semantic (light) */
  --bg-app: var(--neutral-100);
  --surface-primary: var(--neutral-white);
  --surface-raised: var(--neutral-white);
  --border-subtle: var(--neutral-200);
  --border-strong: var(--neutral-300);
  --text-primary: var(--neutral-900);
  --text-secondary: var(--neutral-500);
  --text-tertiary: var(--neutral-400);
  --icon-primary: var(--neutral-700);
  --icon-muted: var(--neutral-400);
  --focus-ring: var(--primary-600);

  --iconbtn-hover-bg: var(--neutral-50);
  --iconbtn-active-bg: var(--neutral-100);
}

/* Theme application order:
   1) default (light) in :root
   2) system dark via prefers-color-scheme
   3) explicit override via [data-theme]
*/

@media (prefers-color-scheme: dark) {
  :root {
    /* semantic (dark) */
    --bg-app: #0b1220;
    --surface-primary: #0f172a;
    --surface-raised: #111c33;
    --border-subtle: #22304a;
    --border-strong: #2b3b5a;
    --text-primary: #e5e7eb;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --icon-primary: #cbd5e1;
    --icon-muted: #94a3b8;
    --focus-ring: var(--primary-500);

    --iconbtn-hover-bg: rgba(148,163,184,0.10);
    --iconbtn-active-bg: rgba(148,163,184,0.16);

    /* elevation (dark) */
    --shadow-sm-light: 0 1px 2px rgba(0,0,0,0.35);
    --shadow-md-light: 0 8px 18px rgba(0,0,0,0.45);
  }
}

/* Explicit overrides (win over system preference) */
:root[data-theme="light"] {
  --bg-app: var(--neutral-100);
  --surface-primary: var(--neutral-white);
  --surface-raised: var(--neutral-white);
  --border-subtle: var(--neutral-200);
  --border-strong: var(--neutral-300);
  --text-primary: var(--neutral-900);
  --text-secondary: var(--neutral-500);
  --text-tertiary: var(--neutral-400);
  --icon-primary: var(--neutral-700);
  --icon-muted: var(--neutral-400);
  --focus-ring: var(--primary-600);

  --iconbtn-hover-bg: var(--neutral-50);
  --iconbtn-active-bg: var(--neutral-100);

  --shadow-sm-light: 0 1px 2px rgba(16,24,40,0.06);
  --shadow-md-light: 0 6px 16px rgba(16,24,40,0.08);
}

:root[data-theme="dark"] {
  --bg-app: #0b1220;
  --surface-primary: #0f172a;
  --surface-raised: #111c33;
  --border-subtle: #22304a;
  --border-strong: #2b3b5a;
  --text-primary: #e5e7eb;
  --text-secondary: #a1a1aa;
  --text-tertiary: #71717a;
  --icon-primary: #cbd5e1;
  --icon-muted: #94a3b8;
  --focus-ring: var(--primary-500);

  --iconbtn-hover-bg: rgba(148,163,184,0.10);
  --iconbtn-active-bg: rgba(148,163,184,0.16);

  --shadow-sm-light: 0 1px 2px rgba(0,0,0,0.35);
  --shadow-md-light: 0 8px 18px rgba(0,0,0,0.45);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-ui);
  background: var(--bg-app);
  color: var(--text-primary);
}

.shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--pad-y) var(--pad-x);
}

.layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 0;
  min-height: calc(100dvh - (var(--pad-y) * 2));
  border-radius: var(--radius-container);
  overflow: hidden;
}

.sidebar {
  background: var(--surface-primary);
  border-right: 1px solid var(--border-subtle);
  padding: 12px 12px;
}

.sidebar__header {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6px;
  border-bottom: 1px solid var(--border-subtle);
  margin: -12px -12px 12px -12px;
  padding-left: 12px;
  padding-right: 12px;
}

.sidebar__title {
  font-size: var(--hlabel-size);
  line-height: var(--hlabel-lh);
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.2px;
  text-transform: uppercase;
}

.sidebar__list {
  display: grid;
  gap: 6px;
}

.project {
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  background: var(--surface-raised);
  overflow: hidden;
}

.project__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 10px;
  cursor: pointer;
  color: var(--text-primary);
}

.project__row:hover {
  background: var(--iconbtn-hover-bg);
}

.project__name {
  font-size: var(--body-size);
  line-height: var(--body-lh);
  font-weight: 600;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project__meta {
  font-size: var(--meta-size);
  line-height: var(--meta-lh);
  font-weight: var(--meta-w);
  color: var(--text-tertiary);
  flex: 0 0 auto;
}

.boards {
  border-top: 1px solid var(--border-subtle);
  padding: 6px 8px 8px 8px;
  display: grid;
  gap: 4px;
}

.boardLink {
  border: 0;
  background: transparent;
  text-align: left;
  padding: 8px 8px;
  border-radius: 10px;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: var(--body-size);
  line-height: var(--body-lh);
  font-weight: var(--body-w);
}

.boardLink:hover {
  background: var(--iconbtn-hover-bg);
  color: var(--text-primary);
}

.boardLink[aria-current="page"] {
  background: var(--neutral-100);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

:root[data-theme="dark"] .boardLink[aria-current="page"] {
  background: rgba(148,163,184,0.10);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .boardLink[aria-current="page"] {
    background: rgba(148,163,184,0.10);
  }
}

.boardLink:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--focus-ring);
}

.boardLink--add {
  color: var(--text-tertiary);
}

.main {
  background: var(--surface-primary);
}

.app {
  min-height: 100dvh;
}

/* Main container surface */
.shell {
  background: var(--surface-primary);
  border-radius: var(--radius-container);
  box-shadow: none;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  height: var(--header-h);
  padding: 10px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--toolbar-gap);
  background: var(--surface-primary);
  border-bottom: 1px solid var(--border-subtle);
  border-top-left-radius: var(--radius-container);
  border-top-right-radius: var(--radius-container);
}

.topbar__left,
.topbar__right {
  display: flex;
  align-items: center;
  gap: var(--toolbar-gap);
  min-width: 0;
}

.iconbtn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 0;
  background: transparent;
  color: var(--icon-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.iconbtn:hover {
  background: var(--iconbtn-hover-bg);
  color: var(--icon-primary);
}

.iconbtn:active {
  background: var(--iconbtn-active-bg);
}

.iconbtn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--focus-ring);
}

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  font-size: var(--meta-size);
  line-height: var(--meta-lh);
  font-weight: var(--meta-w);
  color: var(--text-secondary);
}

.breadcrumb__icon {
  color: var(--icon-muted);
  flex: 0 0 auto;
}

.breadcrumb__link {
  color: var(--text-secondary);
  text-decoration: none;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.breadcrumb__sep {
  color: var(--text-tertiary);
  flex: 0 0 auto;
}

.breadcrumb__current {
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
  background: var(--neutral-50);
  color: var(--text-secondary);
  font-size: var(--meta-size);
  line-height: var(--meta-lh);
  font-weight: var(--meta-w);
}

/* Dark-mode chip background (uses provided dark override rgba token) */
:root[data-theme="dark"] .chip {
  background: rgba(148,163,184,0.10);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .chip {
    background: rgba(148,163,184,0.10);
  }
}

.btn {
  height: 30px;
  padding: 0 12px;
  border-radius: 8px;
  font-size: var(--meta-size);
  line-height: var(--meta-lh);
  font-weight: var(--meta-w);
  cursor: pointer;
}

.btn--outline {
  background: var(--surface-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn--outline:hover {
  background: var(--neutral-50);
  border-color: var(--border-strong);
}

.btn--outline:active {
  background: var(--neutral-100);
}

.btn--outline:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--focus-ring);
}

:root[data-theme="dark"] .btn--outline {
  background: var(--surface-raised);
  border-color: var(--border-subtle);
}
:root[data-theme="dark"] .btn--outline:hover {
  background: rgba(148,163,184,0.10);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .btn--outline {
    background: var(--surface-raised);
    border-color: var(--border-subtle);
  }
  :root:not([data-theme="light"]) .btn--outline:hover {
    background: rgba(148,163,184,0.10);
  }
}

.contentHeader {
  padding: 18px 18px 10px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--section-gap);
}

.title {
  margin: 0;
  font-size: var(--title-size);
  line-height: var(--title-lh);
  font-weight: var(--title-w);
  letter-spacing: -0.2px;
}

.contentHeader__right {
  display: flex;
  align-items: center;
  gap: var(--toolbar-gap);
  flex-wrap: wrap;
  justify-content: flex-end;
}

.tool {
  min-height: 28px;
  padding: 0 6px;
  border-radius: 8px;
  border: 0;
  background: transparent;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: var(--meta-size);
  line-height: var(--meta-lh);
  font-weight: var(--meta-w);
  color: var(--text-secondary);
}

.tool__icon,
.tool__chev {
  color: var(--icon-muted);
  display: inline-flex;
}

.tool:hover {
  color: var(--text-primary);
}

.tool:hover .tool__icon,
.tool:hover .tool__chev {
  color: var(--icon-primary);
}

.tool:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--focus-ring);
}

.board {
  padding: 8px 18px 18px 18px;
}

.board__scroll {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(210px, 230px);
  gap: var(--columns-gap);
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 10px;
  scroll-snap-type: x proximity;
}

.board__scroll:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--focus-ring);
}

.col {
  min-width: 210px;
}

.col__header {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  margin-bottom: var(--col-header-gap);
}

.col__title {
  margin: 0;
  font-size: var(--hlabel-size);
  line-height: var(--hlabel-lh);
  font-weight: var(--hlabel-w);
  color: var(--text-secondary);
}

.count {
  min-width: 18px;
  height: 16px;
  padding: 0 5px;
  border-radius: var(--radius-badge);
  background: var(--neutral-200);
  color: var(--neutral-700);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  line-height: 14px;
  font-weight: 600;
}

:root[data-theme="dark"] .count {
  background: rgba(148,163,184,0.16);
  color: var(--text-primary);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .count {
    background: rgba(148,163,184,0.16);
    color: var(--text-primary);
  }
}

.col__body {
  display: grid;
  gap: var(--card-gap);
}

.card {
  background: var(--surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: var(--card-pad);
  box-shadow: var(--shadow-sm-light);
  display: grid;
  gap: 6px;
  cursor: grab;
}

.card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md-light);
}

.card:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--focus-ring), var(--shadow-md-light);
}

.card[aria-grabbed="true"] {
  opacity: 0.9;
  cursor: grabbing;
  box-shadow: var(--shadow-md-light);
}

.card__top {
  display: grid;
  grid-template-columns: 18px 1fr 16px;
  align-items: start;
  gap: 10px;
}

.tile {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  display: grid;
  place-items: center;
  color: var(--neutral-white);
  font-size: 11px;
  line-height: 14px;
  font-weight: 600;
}

.tile--blue { background: var(--primary-600); }
.tile--dark { background: var(--neutral-black); }
.tile--warn { background: var(--accent-warning-500); color: var(--neutral-black); }
.tile--g { background: var(--brand-g-green); }

.card__title {
  font-size: var(--body-size);
  line-height: var(--body-lh);
  font-weight: var(--body-w);
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.meta {
  font-size: var(--meta-size);
  line-height: var(--meta-lh);
  font-weight: var(--meta-w);
  color: var(--text-tertiary);
}

.avatar {
  width: 16px;
  height: 16px;
  border-radius: var(--radius-avatar);
  border: 1px solid var(--border-subtle);
  background: var(--neutral-200);
  color: var(--neutral-700);
  display: grid;
  place-items: center;
  font-size: 10px;
  line-height: 14px;
  font-weight: 600;
}

.add {
  margin-top: var(--card-gap);
  padding: 0;
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
  font-size: var(--meta-size);
  line-height: var(--meta-lh);
  font-weight: var(--meta-w);
  color: var(--text-secondary);
}

.add:hover {
  color: var(--text-primary);
}

.add:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--focus-ring);
  border-radius: 8px;
}

/* Responsive behavior */
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    width: 260px;
    height: 100dvh;
    z-index: 30;
    box-shadow: var(--shadow-md-light);
    transition: left 160ms ease;
  }
  .shell.is-sidebar-open .sidebar { left: 0; }
}

@media (max-width: 639px) {
  .topbar { flex-wrap: wrap; height: auto; }
  .chip { display: none; }

  .board__scroll {
    grid-auto-columns: minmax(210px, min(92vw, 320px));
    scroll-snap-type: x mandatory;
  }
  .col { scroll-snap-align: start; }
}

@media (min-width: 768px) {
  .board__scroll {
    grid-auto-flow: row;
    grid-template-columns: repeat(2, minmax(210px, 360px));
    grid-auto-rows: min-content;
    overflow-x: hidden;
    overflow-y: auto;
  }
}

@media (min-width: 1024px) {
  .board__scroll {
    grid-auto-flow: column;
    grid-auto-columns: minmax(210px, 230px);
    grid-template-columns: none;
    overflow-x: auto;
    overflow-y: hidden;
  }
}