/* ============================================================
   PRIMITIVES STYLES — Stage 1
   Companion to primitives.jsx. Tailwind utility consumption is
   the production target; here we mirror those rules in plain CSS
   reading the same CSS custom properties from tokens.css.
   ============================================================ */

/* ---------- AppShell ---------- */
.appshell {
  min-height: 100vh;
  background: var(--surface-canvas);
  color: var(--ink-primary);
  display: flex;
  flex-direction: column;
}
.appshell__topbar {
  height: 56px;
  padding: 0 var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--line-soft);
}
.appshell[data-mode="client"] .appshell__topbar { background: var(--surface-canvas); }
.appshell__product { padding-left: var(--space-3); border-left: 1px solid var(--line-soft); margin-left: var(--space-2); }
.appshell__body { display: flex; flex: 1; min-height: 0; }
.appshell__nav {
  width: 200px; padding: var(--space-4) var(--space-3);
  border-right: 1px solid var(--line-soft);
  display: flex; flex-direction: column; gap: var(--space-1);
  background: var(--surface-raised);
}
.appshell__navitem {
  text-align: left;
  padding: var(--space-2) var(--space-3);
  background: transparent; border: none;
  color: var(--ink-secondary);
  font: inherit; font-size: 14px; line-height: 22px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--dur-state) var(--ease-enter);
}
.appshell__navitem:hover { background: var(--surface-sunk); color: var(--ink-primary); }
.appshell__navitem.is-active {
  background: var(--surface-sunk); color: var(--ink-primary); font-weight: 600;
}
.appshell__main { flex: 1; min-width: 0; padding: var(--space-6); max-width: 1280px; margin: 0 auto; width: 100%; }
.appshell__user {
  display: flex; align-items: center; gap: var(--space-2);
  background: transparent; border: 1px solid var(--line-soft);
  padding: var(--space-1) var(--space-2) var(--space-1) var(--space-1);
  border-radius: 999px; cursor: pointer; color: var(--ink-primary);
  font: inherit;
}
.appshell__avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--accent-data-soft); color: var(--accent-data);
  display: grid; place-items: center;
  font-size: 11px; font-weight: 600; letter-spacing: 0.02em;
}

/* ---------- Logo ---------- */
.logo { display: flex; align-items: center; gap: var(--space-2); color: var(--ink-primary); }
.logo__wordmark { font-family: var(--font-serif); font-size: 17px; font-weight: 600; letter-spacing: -0.005em; }

/* ---------- EnvChip ---------- */
.envchip {
  display: inline-flex; align-items: center; gap: var(--space-1);
  font-size: 11px; line-height: 16px; font-family: var(--font-mono);
  color: var(--ink-secondary);
  padding: 2px var(--space-2);
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: var(--surface-sunk);
  text-transform: lowercase;
}
.envchip__dot { width: 6px; height: 6px; border-radius: 50%; background: var(--state-positive); }
.envchip[data-env="prod"] .envchip__dot { background: var(--state-warning); }

/* ---------- LocaleSwitcher ---------- */
.locswitch {
  display: inline-flex; border: 1px solid var(--line-soft); border-radius: var(--radius-md);
  overflow: hidden;
}
.locswitch__btn {
  background: transparent; border: none; cursor: pointer;
  padding: var(--space-1) var(--space-3);
  font: inherit; font-size: 12px; font-weight: 600; letter-spacing: 0.02em;
  color: var(--ink-tertiary);
  transition: background var(--dur-state) var(--ease-enter), color var(--dur-state) var(--ease-enter);
}
.locswitch__btn.is-active { background: var(--surface-sunk); color: var(--ink-primary); }
.locswitch__btn + .locswitch__btn { border-left: 1px solid var(--line-soft); }
.locswitch.is-compact .locswitch__btn { padding: 2px var(--space-2); font-size: 11px; }

/* ---------- Card ---------- */
.card {
  background: var(--surface-raised);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  display: flex; flex-direction: column;
  transition: box-shadow var(--dur-state) var(--ease-enter);
}
.card[data-status="streaming"] {
  box-shadow: 0 0 0 1px var(--accent-data-soft) inset;
}
.card__header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--line-soft);
  display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-3);
}
.card__titlewrap { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.card__title { margin: 0; }
.card__subtitle { margin: 0; }
.card__headerright { display: flex; align-items: center; gap: var(--space-2); flex-shrink: 0; }
.card__body { padding: var(--space-5); }
.card--compact .card__body { padding: var(--space-4); }
.card--data .card__body { padding: 0; }
.card__footer {
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--line-soft);
  background: var(--surface-sunk);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

/* ---------- Chips (used inside Card headers and elsewhere) ---------- */
.chip {
  display: inline-flex; align-items: center; gap: var(--space-1);
  padding: 3px var(--space-2);
  border-radius: 999px;
  font-size: 12px; line-height: 16px;
  background: var(--surface-sunk);
  color: var(--ink-secondary);
  border: 1px solid var(--line-soft);
  white-space: nowrap;
}
.chip--mono { font-family: var(--font-mono); font-size: 11px; }
.chip__dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-data); }
.chip--meta { color: var(--ink-tertiary); }
.chip--warning {
  background: var(--state-warning-soft); color: var(--state-warning); border-color: transparent;
  text-transform: uppercase; font-size: 10px; letter-spacing: 0.06em;
}
.chip--pending {
  background: var(--accent-data-soft); color: var(--accent-data); border-color: transparent;
}
.chip--pending .chip__pulse {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-data); animation: pulse 1.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 0.4; transform: scale(0.8); }
  50%      { opacity: 1;   transform: scale(1.1); }
}
.chip--done {
  background: var(--state-positive-soft); color: var(--state-positive); border-color: transparent;
  width: 22px; height: 22px; padding: 0; justify-content: center;
}
.chip--amber {
  background: var(--accent-primary-soft); color: var(--accent-primary); border-color: transparent;
  font-weight: 600; letter-spacing: 0.02em;
}

/* ---------- StatChip ---------- */
.statchip {
  display: flex; flex-direction: column; gap: 2px;
  padding: var(--space-3) var(--space-4);
  background: var(--surface-sunk);
  border-radius: var(--radius-md);
  border: 1px solid var(--line-soft);
  min-width: 120px;
}
.statchip--data { border-left: 2px solid var(--accent-data); }
.statchip--positive { border-left: 2px solid var(--state-positive); }
.statchip--warning { border-left: 2px solid var(--state-warning); }
.statchip--negative { border-left: 2px solid var(--state-negative); }
.statchip__label { color: var(--ink-tertiary); }
.statchip__value { color: var(--ink-primary); font-weight: 600; }

/* ---------- ConfidenceBar ---------- */
.confbar { display: flex; align-items: center; gap: var(--space-2); width: 100%; }
.confbar__track {
  position: relative; flex: 1; height: 6px;
  background: var(--surface-sunk);
  border-radius: 999px; overflow: hidden;
}
.confbar__fill {
  position: absolute; left: 0; top: 0; bottom: 0;
  background: var(--ink-tertiary);
  transition: width 240ms var(--ease-enter);
  border-radius: 999px;
}
.confbar__fill[data-tier="mid"]  { background: var(--accent-data); }
.confbar__fill[data-tier="high"] { background: var(--accent-primary); }
.confbar__tick {
  position: absolute; top: 0; bottom: 0; width: 1px;
  background: var(--surface-raised); opacity: 0.7;
}
.confbar__num { color: var(--ink-secondary); min-width: 36px; text-align: right; font-size: 12px; }
.confbar--compact { gap: var(--space-1); }
.confbar--compact .confbar__track { height: 4px; }
.confbar--compact .confbar__num { min-width: 30px; font-size: 11px; }

/* ---------- CitationChip ---------- */
.cite { position: relative; cursor: help; }
.cite--partner code {
  background: var(--surface-sunk);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-soft);
  color: var(--accent-data);
  font-size: 12px;
}
.cite--client .cite__name {
  text-decoration: underline;
  text-decoration-color: var(--line-default);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  color: var(--ink-primary);
}
.cite__tooltip {
  position: absolute;
  bottom: calc(100% + 6px); left: 50%; transform: translateX(-50%);
  background: var(--ink-primary);
  color: var(--surface-raised);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: 12px; line-height: 18px;
  white-space: nowrap;
  display: flex; flex-direction: column; gap: 2px;
  opacity: 0; pointer-events: none;
  transition: opacity var(--dur-state) var(--ease-enter), transform var(--dur-state) var(--ease-enter);
  z-index: 50;
}
.cite__tooltip code { background: rgba(255,255,255,0.08); padding: 1px 4px; border-radius: 3px; color: var(--surface-canvas); }
.cite:hover .cite__tooltip,
.cite:focus-visible .cite__tooltip { opacity: 1; transform: translateX(-50%) translateY(-2px); }

/* ---------- DiffBlock ---------- */
.diff {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.diff__col { background: var(--surface-raised); padding: var(--space-3) var(--space-4); }
.diff__col--before { background: var(--state-negative-soft); }
.diff__col--after  { background: var(--state-positive-soft); }
.diff__label { font-family: var(--font-mono); font-size: 11px; margin-bottom: var(--space-2); }
.diff__col--before .diff__label { color: var(--state-negative); }
.diff__col--after  .diff__label { color: var(--state-positive); }
.diff__pre { margin: 0; white-space: pre-wrap; font-size: 12px; line-height: 18px; color: var(--ink-primary); background: rgba(0,0,0,0.03); padding: var(--space-2); border-radius: 4px; }
.diff__content p { margin: 0; }

/* ---------- DataTable ---------- */
.dtable { display: flex; flex-direction: column; }
.dtable__toolbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--line-soft);
  gap: var(--space-3);
}
.dtable__filter {
  flex: 1; max-width: 320px;
  background: var(--surface-canvas);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  color: var(--ink-primary);
  font: inherit; font-size: 13px;
}
.dtable__filter:focus { outline: 3px solid var(--focus-ring); outline-offset: 1px; border-color: var(--accent-primary); }
.dtable__scroll { overflow-x: auto; }
.dtable__table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.dtable__table thead th {
  position: sticky; top: 0;
  background: var(--surface-sunk);
  text-align: left;
  padding: var(--space-2) var(--space-4);
  border-bottom: 1px solid var(--line-default);
  cursor: pointer;
  user-select: none;
  font-weight: 600;
  font-size: 12px;
  color: var(--ink-secondary);
}
.dtable__table thead th.is-numeric { text-align: right; }
.dtable__table tbody td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--line-soft);
  vertical-align: middle;
}
.dtable__table tbody td.is-numeric { text-align: right; }
.dtable__table tbody tr:hover { background: var(--surface-canvas); }
.dtable__table tbody tr:focus { outline: none; background: var(--accent-primary-soft); }
.dtable__sort { margin-left: 4px; color: var(--accent-primary); font-size: 10px; }

/* ---------- CodeBlock ---------- */
.codeblock {
  background: var(--surface-sunk);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.codeblock__bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-1) var(--space-3);
  background: var(--surface-canvas);
  border-bottom: 1px solid var(--line-soft);
  text-transform: uppercase; letter-spacing: 0.04em;
}
.codeblock__copy {
  background: transparent; border: none; cursor: pointer;
  color: var(--ink-tertiary); font: inherit; font-size: 11px;
}
.codeblock__copy:hover { color: var(--ink-primary); }
.codeblock__pre {
  margin: 0; padding: var(--space-3); overflow-x: auto;
  color: var(--ink-primary); white-space: pre-wrap; word-break: break-all;
}

/* ---------- Modal ---------- */
.modal-scrim {
  position: fixed; inset: 0; background: var(--surface-overlay);
  display: grid; place-items: center;
  z-index: 100; padding: var(--space-5);
  animation: scrim-in var(--dur-open) var(--ease-enter);
}
@keyframes scrim-in { from { opacity: 0; } to { opacity: 1; } }
.modal {
  background: var(--surface-raised); color: var(--ink-primary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-soft);
  width: 100%; max-width: 600px; max-height: 90vh;
  display: flex; flex-direction: column;
  animation: modal-in var(--dur-open) var(--ease-enter);
}
.modal--lg { max-width: 880px; }
.modal--sm { max-width: 400px; }
@keyframes modal-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.modal__header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--line-soft);
  display: flex; align-items: center; justify-content: space-between;
}
.modal__close {
  background: transparent; border: none; cursor: pointer;
  color: var(--ink-tertiary); padding: var(--space-1);
  display: grid; place-items: center;
  border-radius: var(--radius-sm);
}
.modal__close:hover { color: var(--ink-primary); background: var(--surface-sunk); }
.modal__body { padding: var(--space-5); overflow-y: auto; flex: 1; }
.modal__footer {
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--line-soft);
  display: flex; justify-content: flex-end; gap: var(--space-2);
  background: var(--surface-sunk);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font: inherit; font-size: 14px; font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  min-height: 36px;
  text-decoration: none;
  transition: background var(--dur-state) var(--ease-enter),
              border-color var(--dur-state) var(--ease-enter),
              color var(--dur-state) var(--ease-enter),
              transform var(--dur-state) var(--ease-enter);
}
.btn:active { transform: translateY(0.5px); }
.btn--ghost {
  background: transparent; border-color: var(--line-default); color: var(--ink-primary);
}
.btn--ghost:hover { background: var(--surface-sunk); }
.btn--amber {
  background: var(--accent-primary); color: #FFFFFF; border-color: var(--accent-primary);
}
.btn--amber:hover { background: #9C681A; border-color: #9C681A; }
[data-theme="dark"] .btn--amber { color: var(--surface-canvas); }
.btn--data {
  background: var(--accent-data); color: #FFFFFF; border-color: var(--accent-data);
}
.btn--data:hover { background: var(--info-link-hover); }
.btn--neutral {
  background: var(--ink-primary); color: var(--surface-raised); border-color: var(--ink-primary);
}

/* ---------- EmptyState ---------- */
.empty {
  padding: var(--space-7) var(--space-5);
  display: flex; flex-direction: column; align-items: center; gap: var(--space-3);
  text-align: center; color: var(--ink-secondary);
}
.empty p { max-width: 480px; margin: 0; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: var(--space-5); left: 50%;
  transform: translateX(-50%);
  background: var(--ink-primary); color: var(--surface-raised);
  padding: var(--space-2) var(--space-2) var(--space-2) var(--space-4);
  border-radius: 999px;
  display: flex; align-items: center; gap: var(--space-3);
  z-index: 110; min-width: 240px;
  animation: toast-in var(--dur-open) var(--ease-enter);
  box-shadow: 0 6px 24px rgba(27,26,24,0.15);
}
@keyframes toast-in { from { opacity: 0; transform: translateX(-50%) translateY(8px); } to { opacity: 1; transform: translateX(-50%) translateY(0); } }
.toast--positive { background: var(--state-positive); }
.toast--warning  { background: var(--state-warning); color: var(--ink-primary); }
.toast--negative { background: var(--state-negative); }
.toast__close {
  background: transparent; border: none; color: inherit; opacity: 0.7;
  width: 24px; height: 24px; border-radius: 50%; cursor: pointer;
  font-size: 16px; line-height: 1;
}
.toast__close:hover { opacity: 1; background: rgba(255,255,255,0.1); }

/* ---------- Skeleton ---------- */
.skel {
  background: linear-gradient(90deg, var(--surface-sunk) 25%, var(--line-soft) 50%, var(--surface-sunk) 75%);
  background-size: 200% 100%;
  border-radius: var(--radius-sm);
  animation: skel-shimmer 1.6s ease-in-out infinite;
  display: block;
}
@keyframes skel-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
@media (prefers-reduced-motion: reduce) { .skel { animation: none; } }

/* ============================================================
   Mobile patterns — shared across all client + landing screens
   Stage 3 (Partner Playground) opts out via its own CSS.
   ============================================================ */
@media (max-width: 767px) {
  /* Top bar — collapse user pill text, keep avatar + locale + theme */
  .appshell__topbar { padding: 0 var(--space-4); gap: var(--space-2); }
  .appshell__product { display: none; }                /* "Decision Intelligence" tagline */
  .appshell__user .t-body { display: none; }           /* hide name "Nguyễn Lan" — keep avatar + locale visible */
  .appshell__user { padding: 2px; border-radius: 999px; gap: var(--space-1); }
  .appshell__topbar > .row:last-child { gap: var(--space-2); }
  .locswitch.is-compact .locswitch__btn { padding: 6px 10px; font-size: 12px; }  /* 32px tap height */

  /* Main padding tightens */
  .appshell__main { padding: var(--space-4); }
}

/* Tap-to-toggle citation tooltips below desktop — no hover */
@media (max-width: 1023px) {
  .citationchip:hover .citationchip__tip { display: none; }
  .citationchip.is-tapped .citationchip__tip { display: block; }
}