/* SIOS shell preview — Phase 0 (explore design tokens) */
:root {
  --bg: #050506;
  --bg-elev: #0e0e11;
  --bg-soft: #141418;
  --fg: #f4f4f5;
  --fg-muted: #a1a1aa;
  --fg-soft: #71717a;
  --line: rgba(255, 255, 255, 0.07);
  --line-strong: rgba(255, 255, 255, 0.14);
  --accent: #d4c4a8;
  --accent-bright: #e8dcc8;
  --accent-soft: rgba(212, 196, 168, 0.12);
  --radius: 16px;
  --radius-sm: 12px;
  --serif: "Instrument Serif", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dock-h: 5.5rem;
  --shadow: 0 1px 0 rgba(255,255,255,0.04) inset, 0 28px 60px -36px rgba(0,0,0,0.95);
}

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

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100dvh;
  overflow-x: hidden;
}

.ambient {
  pointer-events: none;
  position: fixed;
  inset: 0;
  background:
    radial-gradient(1000px 520px at 50% -8%, rgba(212, 196, 168, 0.09), transparent 55%),
    radial-gradient(700px 400px at 90% 70%, rgba(110, 130, 170, 0.055), transparent 50%),
    radial-gradient(500px 300px at 10% 90%, rgba(212, 196, 168, 0.03), transparent 45%);
  z-index: 0;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--fg);
  color: var(--bg);
  padding: 0.5rem 0.75rem;
  z-index: 100;
  border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; }

a { color: var(--accent); text-decoration: none; transition: color 0.2s var(--ease); }
a:hover { color: var(--accent-bright); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.desktop {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: grid;
  grid-template-rows: auto 1fr;
  padding-bottom: calc(var(--dock-h) + 2rem);
}

.menubar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 1.15rem;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 5, 6, 0.72);
  backdrop-filter: saturate(140%) blur(18px);
  -webkit-backdrop-filter: saturate(140%) blur(18px);
  position: sticky;
  top: 0;
  z-index: 30;
}

.menubar-left, .menubar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.menubar-mid {
  display: flex;
  gap: 0.15rem;
}

.brand {
  color: var(--fg);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: -0.02em;
}
.brand:hover { color: var(--fg); opacity: 0.85; }

.badge {
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 0.26rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--accent-soft);
  white-space: nowrap;
}

.menu-link {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--fg-muted);
  font: inherit;
  font-size: 0.84rem;
  font-weight: 500;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
}
.menu-link:hover { color: var(--fg); background: rgba(255,255,255,0.04); }

.hint {
  color: var(--fg-soft);
  font-size: 0.75rem;
  display: none;
}
@media (min-width: 900px) {
  .hint { display: inline; }
}

.clock {
  color: var(--fg-muted);
  font-size: 0.84rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.stage {
  position: relative;
  display: grid;
  place-items: center;
  padding: 1.75rem 1.25rem 1rem;
  align-content: center;
}

.window {
  width: min(520px, 100%);
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  outline: none;
}

.window.is-open {
  display: block;
  animation: rise 0.55s var(--ease) both;
}

.window[hidden] { display: none !important; }

.titlebar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 0.75rem 0.65rem 0.85rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,0.03), transparent), var(--bg-soft);
  user-select: none;
}

.titlebar h1 {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 520;
  color: var(--fg-muted);
  text-align: center;
  letter-spacing: -0.01em;
}

.traffic { display: flex; gap: 0.4rem; align-items: center; }
.traf {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: none;
  padding: 0;
  cursor: default;
  opacity: 0.9;
}
.traf.close { background: #ff5f57; cursor: pointer; }
.traf.min { background: #febc2e; opacity: 0.45; }
.traf.zoom { background: #28c840; opacity: 0.45; }

.win-close {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--fg-soft);
  font-size: 0.75rem;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 8px;
  cursor: pointer;
  line-height: 1;
}
.win-close:hover { color: var(--fg); background: rgba(255,255,255,0.06); }

.body { padding: 1.45rem 1.35rem 1.55rem; }

.body .serif {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 4vw, 2rem);
  letter-spacing: -0.025em;
  margin: 0 0 0.2rem;
  line-height: 1.1;
}

.body .sub {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.body p {
  margin: 0 0 0.9rem;
  color: var(--fg-muted);
  line-height: 1.65;
  font-size: 0.98rem;
}

.body strong { color: var(--fg); font-weight: 560; }
.body em { font-style: italic; color: var(--accent-bright); }
.body .muted { color: var(--fg-soft); font-size: 0.9rem; margin-bottom: 0; }

.truth {
  list-style: none;
  margin: 0 0 1.1rem;
  padding: 0;
  display: grid;
  gap: 0.4rem;
}
.truth li {
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
  color: var(--fg-muted);
  font-size: 0.9rem;
}
.truth li::before {
  content: "✓ ";
  color: var(--accent);
  font-weight: 600;
}

.panel {
  text-align: center;
  padding-top: 1.75rem;
  padding-bottom: 1.85rem;
}

.panel-icon {
  width: 3.5rem;
  height: 3.5rem;
  margin: 0 auto 1rem;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: var(--accent);
  background: linear-gradient(160deg, var(--accent-soft), transparent 65%), var(--bg-soft);
  border: 1px solid var(--line);
}
.panel-icon svg { width: 1.85rem; height: 1.85rem; }

.panel-kicker {
  margin: 0 0 0.45rem !important;
  color: var(--accent) !important;
  font-size: 0.7rem !important;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.panel-title {
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin: 0 0 0.65rem;
  color: var(--fg);
}

.panel p { max-width: 28rem; margin-left: auto; margin-right: auto; }

.dock {
  position: fixed;
  z-index: 40;
  left: 50%;
  bottom: 1.15rem;
  transform: translateX(-50%);
  display: flex;
  gap: 0.3rem;
  padding: 0.55rem 0.6rem;
  border-radius: 20px;
  border: 1px solid var(--line-strong);
  background: rgba(14, 14, 17, 0.9);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  box-shadow: 0 18px 50px -24px rgba(0,0,0,0.95), 0 1px 0 rgba(255,255,255,0.05) inset;
}

.dock-item {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--fg-soft);
  font-family: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.28rem;
  min-width: 4.4rem;
  padding: 0.4rem 0.35rem 0.35rem;
  border-radius: 14px;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
}

.dock-item:hover,
.dock-item:focus-visible {
  background: rgba(255,255,255,0.05);
  color: var(--fg);
}

.dock-item[aria-pressed="true"] {
  color: var(--fg);
}
.dock-item[aria-pressed="true"] .icon {
  border-color: rgba(212, 196, 168, 0.35);
  box-shadow: 0 0 0 1px rgba(212, 196, 168, 0.12);
}

.dock-item:active { transform: scale(0.96); }

.dock-item .icon {
  width: 2.55rem;
  height: 2.55rem;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: linear-gradient(165deg, var(--accent-soft), transparent 70%), var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--accent);
}
.dock-item .icon svg { width: 1.25rem; height: 1.25rem; }

.dock-item .label {
  font-size: 0.66rem;
  font-weight: 520;
  letter-spacing: 0.02em;
}

.footer-note {
  position: relative;
  z-index: 1;
  text-align: center;
  margin: 0;
  padding: 0 1rem 0.35rem;
  font-size: 0.78rem;
  color: var(--fg-soft);
  /* sits above dock visually via padding on desktop; keep subtle */
  display: none;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(14px) scale(0.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  .window.is-open { animation: none; }
  .dock-item { transition: none; }
  .dock-item:active { transform: none; }
}

@media (max-width: 640px) {
  .menubar-mid { display: none; }
  .dock-item { min-width: 3.7rem; }
  .dock-item .label { font-size: 0.6rem; }
  .stage { padding-top: 1.25rem; }
}

/* ——— Calc module v0 ——— */
.window-calc {
  width: min(720px, 100%);
}

.calc-body {
  padding: 1.1rem 1.15rem 1.25rem !important;
}

.calc-live {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.85rem !important;
  color: var(--accent) !important;
  font-size: 0.7rem !important;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.calc-live .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #6dcb8b;
  box-shadow: 0 0 0 3px rgba(109, 203, 139, 0.18);
}

.calc-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1rem;
  align-items: stretch;
}

@media (max-width: 640px) {
  .calc-layout {
    grid-template-columns: 1fr;
  }
}

.calc-display {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem 0.95rem;
  margin-bottom: 0.65rem;
  text-align: right;
  min-height: 4.5rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 0.2rem;
}

.calc-expr {
  min-height: 1.1rem;
  color: var(--fg-soft);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
}

.calc-value {
  color: var(--fg);
  font-size: clamp(1.75rem, 4vw, 2.15rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
  word-break: break-all;
}

.calc-pad {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.45rem;
}

.calc-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--fg);
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 500;
  border-radius: 12px;
  min-height: 3rem;
  cursor: pointer;
  transition: background 0.15s var(--ease), border-color 0.15s var(--ease), transform 0.12s var(--ease);
}

.calc-btn:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--line-strong);
}

.calc-btn:active {
  transform: scale(0.97);
}

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

.calc-btn.fn {
  color: var(--accent);
  background: rgba(212, 196, 168, 0.06);
}

.calc-btn.op {
  color: var(--bg);
  background: var(--accent);
  border-color: transparent;
  font-weight: 600;
}

.calc-btn.op:hover {
  background: var(--accent-bright);
  color: var(--bg);
}

.calc-btn.eq {
  background: var(--fg);
  color: var(--bg);
  border-color: transparent;
  font-weight: 600;
}

.calc-btn.eq:hover {
  background: #fff;
}

.calc-btn.zero {
  grid-column: span 2;
}

.calc-history {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  min-height: 100%;
  overflow: hidden;
}

.calc-history-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid var(--line);
}

.calc-history-head h2 {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-soft);
  font-family: var(--sans);
}

.calc-history-actions {
  display: flex;
  gap: 0.55rem;
}

.calc-link {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-size: 0.75rem;
  font-weight: 520;
  cursor: pointer;
  padding: 0.15rem 0;
}

.calc-link:hover { color: var(--accent-bright); }
.calc-link.danger { color: var(--fg-soft); }
.calc-link.danger:hover { color: #f0a8a0; }

.calc-history-list {
  list-style: none;
  margin: 0;
  padding: 0.35rem;
  overflow-y: auto;
  max-height: 22rem;
  flex: 1;
}

.calc-history-item {
  width: 100%;
  appearance: none;
  border: none;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  padding: 0.55rem 0.6rem;
  border-radius: 10px;
  cursor: pointer;
  display: grid;
  gap: 0.15rem;
}

.calc-history-item:hover {
  background: rgba(255, 255, 255, 0.04);
}

.h-expr {
  color: var(--fg-soft);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

.h-res {
  color: var(--fg);
  font-size: 0.95rem;
  font-weight: 520;
  font-variant-numeric: tabular-nums;
}

.calc-history-empty {
  margin: 0;
  padding: 1rem 0.95rem 1.15rem;
  color: var(--fg-soft);
  font-size: 0.82rem;
  line-height: 1.5;
}

@media (prefers-reduced-motion: reduce) {
  .calc-btn { transition: none; }
  .calc-btn:active { transform: none; }
}

/* ——— Calendar module v0 ——— */
.window-cal {
  width: min(820px, 100%);
}

.cal-body {
  padding: 1.1rem 1.15rem 1.2rem !important;
  position: relative;
}

.cal-live {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.85rem !important;
  color: var(--accent) !important;
  font-size: 0.7rem !important;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.cal-live .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #6dcb8b;
  box-shadow: 0 0 0 3px rgba(109, 203, 139, 0.18);
}

.cal-layout {
  display: grid;
  grid-template-columns: 1.25fr 0.9fr;
  gap: 1rem;
}

@media (max-width: 700px) {
  .cal-layout { grid-template-columns: 1fr; }
}

.cal-toolbar {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.cal-month-label {
  margin: 0;
  flex: 1;
  text-align: center;
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--fg);
}

.cal-nav,
.cal-today,
.cal-btn-primary,
.cal-btn-ghost {
  appearance: none;
  font-family: inherit;
  cursor: pointer;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--fg-muted);
  transition: background 0.15s var(--ease), color 0.15s var(--ease), border-color 0.15s var(--ease);
}

.cal-nav {
  width: 2.1rem;
  height: 2.1rem;
  font-size: 1.25rem;
  line-height: 1;
  display: grid;
  place-items: center;
}

.cal-nav:hover,
.cal-today:hover,
.cal-btn-ghost:hover {
  color: var(--fg);
  border-color: var(--line-strong);
  background: rgba(255,255,255,0.06);
}

.cal-today {
  padding: 0.35rem 0.7rem;
  font-size: 0.75rem;
  font-weight: 520;
  margin-left: 0.25rem;
}

.cal-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.25rem;
  margin-bottom: 0.35rem;
  text-align: center;
  color: var(--fg-soft);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.3rem;
}

.cal-cell {
  appearance: none;
  border: 1px solid transparent;
  background: rgba(255,255,255,0.02);
  border-radius: 12px;
  min-height: 3.1rem;
  padding: 0.35rem 0.25rem 0.4rem;
  color: var(--fg-muted);
  font-family: inherit;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  transition: background 0.15s var(--ease), border-color 0.15s var(--ease);
}

.cal-cell.empty {
  background: transparent;
  cursor: default;
  min-height: 3.1rem;
}

.cal-cell:not(.empty):hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--line);
}

.cal-cell .d {
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}

.cal-cell .dots {
  color: var(--accent);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  line-height: 1;
}

.cal-cell.is-today .d {
  color: var(--accent);
  font-weight: 600;
}

.cal-cell.is-selected {
  border-color: rgba(212, 196, 168, 0.45);
  background: var(--accent-soft);
  color: var(--fg);
}

.cal-cell.has-events .d { color: var(--fg); }

.cal-side {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(0,0,0,0.22);
  display: flex;
  flex-direction: column;
  min-height: 100%;
  overflow: hidden;
}

.cal-side-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--line);
}

.cal-side-head h2 {
  margin: 0;
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 560;
  color: var(--fg);
  letter-spacing: -0.01em;
}

.cal-btn-primary {
  border-color: transparent;
  background: var(--accent);
  color: var(--bg);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.4rem 0.75rem;
}

.cal-btn-primary:hover {
  background: var(--accent-bright);
  color: var(--bg);
}

.cal-btn-ghost {
  padding: 0.4rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 520;
}

.cal-event-list {
  list-style: none;
  margin: 0;
  padding: 0.4rem;
  overflow-y: auto;
  max-height: 16rem;
  flex: 1;
}

.cal-event-item {
  width: 100%;
  appearance: none;
  border: none;
  background: transparent;
  text-align: left;
  font: inherit;
  color: inherit;
  padding: 0.65rem 0.7rem;
  border-radius: 10px;
  cursor: pointer;
  display: grid;
  gap: 0.2rem;
}

.cal-event-item:hover {
  background: rgba(255,255,255,0.04);
}

.cal-event-item .t {
  color: var(--fg);
  font-size: 0.92rem;
  font-weight: 520;
}

.cal-event-item .n {
  color: var(--fg-soft);
  font-size: 0.78rem;
  line-height: 1.4;
}

.cal-empty {
  margin: 0;
  padding: 1rem 0.95rem;
  color: var(--fg-soft);
  font-size: 0.82rem;
  line-height: 1.5;
}

.cal-io {
  display: flex;
  gap: 0.85rem;
  padding: 0.75rem 0.95rem 0.9rem;
  border-top: 1px solid var(--line);
}

.cal-link {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-size: 0.75rem;
  font-weight: 520;
  cursor: pointer;
  padding: 0;
}

.cal-link:hover { color: var(--accent-bright); }
.cal-link.danger { color: var(--fg-soft); }
.cal-link.danger:hover { color: #f0a8a0; }

.cal-modal {
  position: absolute;
  inset: 0;
  z-index: 5;
  background: rgba(5, 5, 6, 0.72);
  backdrop-filter: blur(8px);
  display: grid;
  place-items: center;
  padding: 1rem;
}

.cal-modal[hidden] { display: none !important; }

.cal-modal-card {
  width: min(400px, 100%);
  background: var(--bg-elev);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem 1.2rem;
  box-shadow: var(--shadow);
  animation: rise 0.35s var(--ease) both;
}

.cal-modal-card h3 {
  margin: 0 0 1rem;
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 400;
  letter-spacing: -0.02em;
}

.cal-import-msg {
  color: var(--fg-muted);
  font-size: 0.92rem;
  line-height: 1.55;
  margin: 0 0 1.15rem;
}

.cal-field {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 0.85rem;
  font-size: 0.78rem;
  font-weight: 520;
  color: var(--fg-soft);
  letter-spacing: 0.02em;
}

.cal-field em {
  font-style: normal;
  font-weight: 400;
  color: var(--fg-soft);
  opacity: 0.8;
}

.cal-field input,
.cal-field textarea {
  appearance: none;
  width: 100%;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--fg);
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 400;
}

.cal-field input:focus,
.cal-field textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: transparent;
}

.cal-modal-actions {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: 0.35rem;
  flex-wrap: wrap;
}

.cal-modal-spacer { flex: 1; }

@media (prefers-reduced-motion: reduce) {
  .cal-modal-card { animation: none; }
  .cal-cell, .cal-nav, .cal-today { transition: none; }
}

/* ——— Files module v0 ——— */
.window-files {
  width: min(900px, 100%);
}

.files-body {
  padding: 1.05rem 1.15rem 1.15rem !important;
  position: relative;
}

.files-live {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.75rem !important;
  color: var(--accent) !important;
  font-size: 0.7rem !important;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.files-live .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #6dcb8b;
  box-shadow: 0 0 0 3px rgba(109, 203, 139, 0.18);
}

.files-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  margin-bottom: 0.75rem;
}

.files-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem;
  min-width: 0;
}

.files-crumb {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-size: 0.86rem;
  font-weight: 520;
  cursor: pointer;
  padding: 0.15rem 0.35rem;
  border-radius: 6px;
}

.files-crumb:hover {
  background: rgba(255,255,255,0.05);
  color: var(--accent-bright);
}

.files-crumb-sep {
  color: var(--fg-soft);
  font-size: 0.8rem;
}

.files-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
}

.files-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--fg-muted);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 520;
  padding: 0.4rem 0.7rem;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s var(--ease), color 0.15s var(--ease), border-color 0.15s var(--ease);
}

.files-btn:hover {
  color: var(--fg);
  border-color: var(--line-strong);
  background: rgba(255,255,255,0.06);
}

.files-btn.primary {
  background: var(--accent);
  color: var(--bg);
  border-color: transparent;
  font-weight: 600;
}

.files-btn.primary:hover {
  background: var(--accent-bright);
  color: var(--bg);
}

.files-btn.primary:disabled {
  opacity: 0.45;
  cursor: default;
}

.files-link {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-size: 0.75rem;
  font-weight: 520;
  cursor: pointer;
  padding: 0.25rem 0.2rem;
}

.files-link:hover { color: var(--accent-bright); }
.files-link.danger { color: var(--fg-soft); }
.files-link.danger:hover { color: #f0a8a0; }

.files-layout {
  display: grid;
  grid-template-columns: 0.95fr 1.15fr;
  gap: 0.85rem;
  min-height: 22rem;
}

@media (max-width: 720px) {
  .files-layout { grid-template-columns: 1fr; }
}

.files-list-pane,
.files-editor-pane {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(0,0,0,0.22);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.files-list {
  list-style: none;
  margin: 0;
  padding: 0.4rem;
  overflow-y: auto;
  flex: 1;
  max-height: 24rem;
}

.files-item {
  width: 100%;
  appearance: none;
  border: none;
  background: transparent;
  color: var(--fg-muted);
  font: inherit;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 0.65rem;
  border-radius: 10px;
  cursor: pointer;
}

.files-item:hover {
  background: rgba(255,255,255,0.04);
  color: var(--fg);
}

.files-item.is-active {
  background: var(--accent-soft);
  color: var(--fg);
  border: 1px solid rgba(212,196,168,0.25);
}

.files-item .ico {
  color: var(--accent);
  width: 1.1rem;
  text-align: center;
  font-size: 0.85rem;
}

.files-item.is-dir .ico { opacity: 0.95; }

.files-item .nm {
  font-size: 0.92rem;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.files-empty,
.files-editor-empty {
  margin: 0;
  padding: 1.1rem 1rem;
  color: var(--fg-soft);
  font-size: 0.88rem;
  line-height: 1.55;
}

.files-quota {
  margin: 0;
  padding: 0.55rem 0.85rem 0.7rem;
  border-top: 1px solid var(--line);
  color: var(--fg-soft);
  font-size: 0.7rem;
  letter-spacing: 0.02em;
}

.files-editor {
  display: flex;
  flex-direction: column;
  min-height: 22rem;
  height: 100%;
}

.files-editor-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--line);
}

.files-editor-name {
  font-size: 0.82rem;
  font-weight: 560;
  color: var(--fg);
  letter-spacing: -0.01em;
}

.files-editor-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
}

#files-textarea {
  flex: 1;
  width: 100%;
  min-height: 16rem;
  border: none;
  resize: vertical;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono, ui-monospace, Menlo, Consolas, monospace);
  font-size: 0.86rem;
  line-height: 1.55;
  padding: 0.9rem 1rem;
  outline: none;
}

.files-modal {
  position: absolute;
  inset: 0;
  z-index: 6;
  background: rgba(5,5,6,0.72);
  backdrop-filter: blur(8px);
  display: grid;
  place-items: center;
  padding: 1rem;
}

.files-modal[hidden] { display: none !important; }

.files-modal-card {
  width: min(400px, 100%);
  background: var(--bg-elev);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
  box-shadow: var(--shadow);
  animation: rise 0.35s var(--ease) both;
}

.files-modal-card h3 {
  margin: 0 0 0.9rem;
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 400;
  letter-spacing: -0.02em;
}

.files-import-msg {
  color: var(--fg-muted);
  font-size: 0.92rem;
  line-height: 1.55;
  margin: 0 0 1.1rem;
}

.files-field {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 0.9rem;
  font-size: 0.78rem;
  font-weight: 520;
  color: var(--fg-soft);
}

.files-field input {
  appearance: none;
  width: 100%;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--fg);
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 400;
}

.files-field input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: transparent;
}

.files-modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
}

@media (prefers-reduced-motion: reduce) {
  .files-modal-card { animation: none; }
  .files-btn { transition: none; }
}

/* ——— Keys module v0 ——— */
.window-keys {
  width: min(860px, 100%);
}

.keys-body {
  padding: 1rem 1.15rem 1.2rem !important;
}

.keys-banner {
  margin: 0 0 0.9rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(240, 168, 160, 0.35);
  background: rgba(240, 168, 160, 0.08);
  color: var(--fg-muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.keys-banner strong {
  color: #f0c4a0;
  font-weight: 600;
}

.keys-banner em { color: var(--fg); font-style: italic; }

.keys-banner a {
  display: inline-block;
  margin-top: 0.35rem;
}

.keys-live {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.85rem !important;
  color: var(--accent) !important;
  font-size: 0.7rem !important;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.keys-live .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #6dcb8b;
  box-shadow: 0 0 0 3px rgba(109, 203, 139, 0.18);
}

.keys-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

@media (max-width: 720px) {
  .keys-layout { grid-template-columns: 1fr; }
}

.keys-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(0,0,0,0.22);
  padding: 1rem 1.05rem 1.1rem;
}

.keys-card h2 {
  margin: 0 0 0.45rem;
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.keys-status {
  margin: 0 0 0.75rem;
  color: var(--fg);
  font-size: 0.95rem;
  font-weight: 520;
}

.keys-help {
  margin: 0 0 0.85rem;
  color: var(--fg-soft);
  font-size: 0.84rem;
  line-height: 1.5;
}

.keys-field {
  display: grid;
  gap: 0.3rem;
  margin-bottom: 0.7rem;
  font-size: 0.72rem;
  font-weight: 520;
  color: var(--fg-soft);
  letter-spacing: 0.02em;
}

.keys-field em {
  font-style: normal;
  font-weight: 400;
  opacity: 0.85;
}

.keys-field input,
.keys-field textarea {
  appearance: none;
  width: 100%;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--fg);
  border-radius: 10px;
  padding: 0.6rem 0.75rem;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 400;
}

.keys-field textarea {
  font-family: var(--mono, ui-monospace, Menlo, Consolas, monospace);
  font-size: 0.82rem;
  line-height: 1.45;
  resize: vertical;
}

.keys-field input:focus,
.keys-field textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: transparent;
}

.keys-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.65rem;
}

.keys-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--fg-muted);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 520;
  padding: 0.5rem 0.85rem;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s var(--ease), color 0.15s var(--ease), border-color 0.15s var(--ease);
}

.keys-btn:hover {
  color: var(--fg);
  border-color: var(--line-strong);
}

.keys-btn.primary {
  background: var(--accent);
  color: var(--bg);
  border-color: transparent;
  font-weight: 600;
}

.keys-btn.primary:hover {
  background: var(--accent-bright);
  color: var(--bg);
}

.keys-link {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 520;
  cursor: pointer;
  padding: 0.2rem 0;
}

.keys-link:hover { color: var(--accent-bright); }
.keys-link.danger { color: var(--fg-soft); }
.keys-link.danger:hover { color: #f0a8a0; }

.keys-library {
  grid-column: 1 / -1;
}

.keys-blob-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.keys-blob-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.7rem 0.8rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
}

.keys-blob-meta {
  display: grid;
  gap: 0.15rem;
  min-width: 0;
}

.keys-blob-meta strong {
  color: var(--fg);
  font-size: 0.9rem;
  font-weight: 520;
}

.keys-blob-meta span {
  color: var(--fg-soft);
  font-size: 0.75rem;
}

.keys-blob-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.keys-empty {
  margin: 0;
  color: var(--fg-soft);
  font-size: 0.86rem;
}

/* ——— Data bus toast ——— */
#sios-toast {
  position: fixed;
  z-index: 80;
  left: 50%;
  bottom: calc(var(--dock-h, 5.5rem) + 0.85rem);
  transform: translateX(-50%) translateY(12px);
  max-width: min(420px, calc(100vw - 2rem));
  padding: 0.7rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(14, 14, 17, 0.92);
  color: var(--fg-muted);
  font-size: 0.84rem;
  font-weight: 520;
  letter-spacing: -0.01em;
  box-shadow: 0 16px 40px -24px rgba(0,0,0,0.9);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
}

#sios-toast.is-on {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

#sios-toast[data-kind="ok"] {
  color: var(--fg);
  border-color: rgba(109, 203, 139, 0.35);
}

#sios-toast[data-kind="err"] {
  color: #f0c4a0;
  border-color: rgba(240, 168, 160, 0.4);
}

@media (prefers-reduced-motion: reduce) {
  #sios-toast { transition: none; }
}

/* ========== Polish pass — cohesion (no new modules) ========== */
:root {
  --shadow: 0 1px 0 rgba(255,255,255,0.045) inset, 0 24px 64px -32px rgba(0,0,0,0.92), 0 0 0 1px rgba(255,255,255,0.03);
  --shadow-dock: 0 18px 50px -22px rgba(0,0,0,0.95), 0 1px 0 rgba(255,255,255,0.06) inset;
  --tracking: -0.014em;
}

body {
  letter-spacing: var(--tracking);
  font-feature-settings: "ss01" on, "cv01" on;
}

.menubar {
  padding: 0.7rem 1.25rem;
  border-bottom-color: rgba(255,255,255,0.06);
}

.brand {
  letter-spacing: -0.025em;
}

.badge {
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  padding: 0.28rem 0.68rem;
}

.hint {
  font-size: 0.72rem;
  letter-spacing: 0.01em;
  color: var(--fg-soft);
}

.clock {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--fg-muted);
}

.stage {
  padding: 2rem 1.35rem 1.25rem;
}

.window {
  border-radius: 18px;
  border-color: rgba(255,255,255,0.09);
}

.titlebar {
  padding: 0.7rem 0.8rem 0.7rem 0.95rem;
  min-height: 2.65rem;
}

.titlebar h1 {
  font-size: 0.78rem;
  font-weight: 560;
  letter-spacing: -0.015em;
  color: rgba(244, 244, 245, 0.72);
}

.traf {
  width: 12px;
  height: 12px;
  box-shadow: 0 0 0 0.5px rgba(0,0,0,0.25);
}

.traf.close:hover { filter: brightness(1.08); }
.traf.min,
.traf.zoom { pointer-events: none; }

.win-close {
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 9px;
  color: rgba(161, 161, 170, 0.9);
}

.body {
  padding: 1.35rem 1.3rem 1.45rem;
}

/* Unified live pills */
.calc-live,
.cal-live,
.files-live,
.keys-live {
  margin-bottom: 0.95rem !important;
  font-size: 0.68rem !important;
  letter-spacing: 0.12em !important;
}

/* Unified empty states */
.empty-state {
  display: grid;
  justify-items: center;
  text-align: center;
  gap: 0.35rem;
  margin: 0;
  padding: 1.6rem 1.15rem 1.7rem;
  color: var(--fg-soft);
}

.empty-state[hidden] { display: none !important; }

.empty-glyph {
  width: 2.6rem;
  height: 2.6rem;
  margin-bottom: 0.45rem;
  display: grid;
  place-items: center;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: linear-gradient(165deg, var(--accent-soft), transparent 70%), var(--bg-soft);
  color: var(--accent);
  font-size: 1rem;
}

.empty-title {
  margin: 0;
  color: var(--fg-muted);
  font-size: 0.92rem;
  font-weight: 560;
  letter-spacing: -0.015em;
}

.empty-copy {
  margin: 0;
  max-width: 16.5rem;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--fg-soft);
}

.files-editor-empty {
  flex: 1;
  align-content: center;
  min-height: 14rem;
}

.calc-history-empty,
.cal-empty,
.keys-empty,
.files-empty {
  /* inherit empty-state */
}

/* Dock */
.dock {
  bottom: 1.25rem;
  padding: 0.6rem 0.7rem;
  border-radius: 22px;
  border-color: rgba(255,255,255,0.14);
  background: rgba(12, 12, 15, 0.88);
  box-shadow: var(--shadow-dock);
  gap: 0.25rem;
}

.dock-item {
  min-width: 4.5rem;
  border-radius: 16px;
  padding: 0.45rem 0.4rem 0.4rem;
}

.dock-item .icon {
  width: 2.65rem;
  height: 2.65rem;
  border-radius: 14px;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.dock-item:hover .icon,
.dock-item:focus-visible .icon {
  transform: translateY(-2px);
  border-color: rgba(212, 196, 168, 0.28);
}

.dock-item[aria-pressed="true"] .icon {
  background: linear-gradient(165deg, rgba(212,196,168,0.22), transparent 70%), var(--bg-soft);
}

.dock-item .label {
  font-size: 0.64rem;
  font-weight: 560;
  letter-spacing: 0.03em;
  color: inherit;
}

/* Panels / cards consistency */
.calc-history,
.cal-side,
.files-list-pane,
.files-editor-pane,
.keys-card {
  border-radius: 14px;
  border-color: rgba(255,255,255,0.08);
}

.keys-banner {
  border-radius: 14px;
  font-size: 0.86rem;
  line-height: 1.6;
}

.keys-card h2,
.calc-history-head h2,
.cal-side-head h2 {
  letter-spacing: 0.08em;
}

.calc-history-actions,
.cal-io,
.files-actions,
.keys-row {
  gap: 0.55rem;
}

.calc-link,
.cal-link,
.files-link,
.keys-link {
  font-size: 0.74rem;
  letter-spacing: 0.01em;
}

/* Toast */
#sios-toast {
  bottom: calc(var(--dock-h) + 1.35rem);
  padding: 0.72rem 1.15rem;
  border-radius: 999px;
  font-size: 0.82rem;
  letter-spacing: -0.012em;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

/* Welcome truth list */
.truth li {
  border-radius: 12px;
  padding: 0.75rem 0.9rem;
  font-size: 0.88rem;
}

/* Motion */
@media (prefers-reduced-motion: reduce) {
  .dock-item .icon { transition: none; }
  .dock-item:hover .icon,
  .dock-item:focus-visible .icon { transform: none; }
  #sios-toast.is-on { transform: translateX(-50%); }
  .window.is-open,
  .cal-modal-card,
  .files-modal-card,
  .keys-card {
    animation: none !important;
  }
}

@media (max-width: 640px) {
  .stage { padding: 1.25rem 0.9rem 1rem; }
  .dock { bottom: 0.85rem; }
  .dock-item { min-width: 3.55rem; }
  .empty-copy { max-width: 14rem; }
}