:root {
  --ink: #0a0a0a;
  --paper: #f8f8f3;
  --white: #ffffff;
  --surface-2: #efefe7;
  --surface-3: #e9e9de;
  --mute: #545454;
  --soft: #787878;
  --hair: rgba(10, 10, 10, .14);
  --hair-soft: rgba(10, 10, 10, .08);
  --lime: #cfff4d;
  --lime-dark: #9bc400;
  --ok: #26855a;
  --warn: #b57a06;
  --err: #db2e2e;
  --sans: Poppins, Arial, Helvetica, sans-serif;
  --mono: "DejaVu Sans Mono", "SFMono-Regular", Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; border-radius: 0 !important; }
html, body { margin: 0; min-height: 100%; }
body { background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 14px; -webkit-font-smoothing: antialiased; }
button, input { font: inherit; }
button { color: inherit; }
button:focus-visible, input:focus-visible { outline: 2px solid var(--lime); outline-offset: 2px; }
button:disabled { cursor: not-allowed; opacity: .48; }
svg { display: block; fill: none; stroke: currentColor; stroke-linecap: square; stroke-linejoin: miter; stroke-width: 1.7; }

.console { min-height: 100vh; display: grid; grid-template-columns: 3.5rem 15.5rem minmax(0, 1fr); grid-template-rows: 3.25rem minmax(0, 1fr) 2rem; grid-template-areas: "rail topbar topbar" "rail sidebar main" "rail status status"; }
.rail { grid-area: rail; position: sticky; top: 0; height: 100vh; z-index: 3; display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 14px 0; border-right: 2px solid var(--ink); background: var(--surface-2); }
.logo { margin-bottom: 12px; font-weight: 800; font-size: 12.5px; line-height: .95; letter-spacing: -.03em; }
.rail-button { width: 2.3rem; height: 2.3rem; display: grid; place-items: center; border: 0; background: transparent; color: var(--mute); cursor: pointer; }
.rail-button svg { width: 18px; height: 18px; }
.rail-button:hover { background: rgba(10, 10, 10, .08); color: var(--ink); }
.rail-button.is-active { background: var(--ink); color: var(--paper); }
.rail-spacer { flex: 1; }
.rail-version { font: 10px var(--mono); color: var(--soft); }

.topbar { grid-area: topbar; position: sticky; top: 0; z-index: 2; display: flex; align-items: center; gap: 16px; padding: 0 22px; border-bottom: 2px solid var(--ink); background: var(--paper); }
.crumbs { display: flex; align-items: center; gap: 7px; font: 11px var(--mono); color: var(--mute); }
.crumbs strong { color: var(--ink); font-weight: 500; }
.preview-state { margin-left: auto; display: inline-flex; align-items: center; gap: 8px; font: 10px var(--mono); text-transform: uppercase; letter-spacing: .09em; color: var(--mute); }
.state-dot { width: 9px; height: 9px; flex: 0 0 auto; display: inline-block; border: 1px solid var(--lime-dark); border-radius: 50% !important; background: var(--lime); }
.chip, .badge { display: inline-flex; align-items: center; width: fit-content; min-height: 1.45rem; padding: 3px 8px; border: 1px solid var(--hair); background: transparent; font: 9.5px var(--mono); text-transform: uppercase; letter-spacing: .07em; white-space: nowrap; }
.badge-accent { border-color: var(--lime-dark); background: rgba(207, 255, 77, .22); }
.badge-ok { color: var(--ok); border-color: rgba(38, 133, 90, .35); background: rgba(38, 133, 90, .1); }
.badge-warn { color: var(--warn); border-color: rgba(181, 122, 6, .35); background: rgba(181, 122, 6, .08); }
.mobile-menu { display: none; border: 1px solid var(--ink); background: transparent; padding: 5px 9px; font: 10px var(--mono); text-transform: uppercase; }

.sidebar { grid-area: sidebar; display: flex; min-height: 0; flex-direction: column; overflow: auto; border-right: 1px solid var(--hair); background: var(--surface-2); }
.sidebar-role { padding: 17px 20px; border-bottom: 1px solid var(--hair); }
.label { display: block; margin-bottom: 6px; color: var(--soft); font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: .15em; }
.sidebar-role strong { display: block; font-size: 13px; }
.nav-group { padding: 14px 0; border-bottom: 1px solid var(--hair); }
.nav-label { padding: 0 20px 8px; color: var(--soft); font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: .15em; }
.nav-item { width: 100%; min-height: 2.45rem; display: flex; align-items: center; gap: 8px; padding: 0 20px; border: 0; border-left: 2px solid transparent; background: transparent; color: var(--mute); text-align: left; cursor: pointer; }
.nav-item:hover { background: rgba(10, 10, 10, .05); color: var(--ink); }
.nav-item.is-active { border-left-color: var(--lime); background: rgba(10, 10, 10, .06); color: var(--ink); font-weight: 600; }
.nav-item small { margin-left: auto; color: var(--soft); font: 10px var(--mono); }
.sidebar-foot { margin-top: auto; padding: 16px 20px; color: var(--soft); font: 9.5px/1.7 var(--mono); text-transform: uppercase; }
.sidebar-foot span, .sidebar-foot strong { display: block; }
.sidebar-foot strong { color: var(--mute); font-weight: 500; }

.main { grid-area: main; min-width: 0; overflow: auto; }
.view { display: none; min-height: 100%; padding: 24px; }
.view.is-active { display: block; }
.page-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 32px; padding: 24px 26px; border: 2px solid var(--ink); background: var(--white); }
.page-head.compact { padding: 20px 22px; }
h1, h2, p { margin-top: 0; }
h1 { max-width: 850px; margin-bottom: 10px; font-size: clamp(30px, 4vw, 54px); line-height: .98; letter-spacing: -.045em; }
.compact h1 { font-size: clamp(27px, 3vw, 42px); }
.page-head p { max-width: 760px; margin-bottom: 0; color: var(--mute); line-height: 1.65; }
.mode-card { min-width: 190px; display: flex; align-items: center; gap: 12px; padding: 14px; border: 1px solid var(--ink); background: var(--ink); color: var(--paper); }
.mode-card small, .mode-card strong { display: block; }
.mode-card small { color: rgba(248, 248, 243, .58); font: 9px var(--mono); text-transform: uppercase; }
.mode-card strong { margin-top: 3px; color: var(--lime); font: 11px var(--mono); }

.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin: 18px 0; border: 2px solid var(--ink); background: var(--ink); }
.metric { min-height: 122px; padding: 17px; background: var(--paper); }
.metric span, .metric small, .metric strong { display: block; }
.metric span { color: var(--soft); font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: .13em; }
.metric strong { margin: 18px 0 4px; font: 600 21px var(--mono); }
.metric small { color: var(--mute); font: 10px var(--mono); }

.content-grid { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(280px, 1fr); gap: 18px; }
.panel { border: 1px solid var(--hair); background: var(--white); }
.panel-wide { border: 2px solid var(--ink); }
.panel-head { min-height: 3.4rem; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 16px; border-bottom: 1px solid var(--hair); }
.panel-head h2 { margin: 0; font-size: 15px; }
.panel-head .label { margin-bottom: 3px; }
.status-row { display: grid; grid-template-columns: 36px minmax(0, 1fr) auto; align-items: center; gap: 12px; padding: 15px 16px; border-bottom: 1px solid var(--hair-soft); }
.status-row:last-child { border-bottom: 0; }
.status-row strong, .status-row small { display: block; }
.status-row small { margin-top: 4px; color: var(--soft); font-size: 11px; }
.status-icon { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid var(--hair); background: var(--surface-2); font: 10px var(--mono); }
.status-icon.is-ready { border-color: var(--lime-dark); box-shadow: inset 3px 0 0 var(--lime); }
.body-copy { padding: 16px; margin-bottom: 0; color: var(--mute); line-height: 1.7; }
.body-copy strong { color: var(--ink); }
.contract-list { display: grid; border-top: 1px solid var(--hair); }
.contract-list span { display: flex; justify-content: space-between; gap: 16px; padding: 10px 16px; border-bottom: 1px solid var(--hair-soft); color: var(--mute); font: 10.5px var(--mono); }
.contract-list b { color: var(--ink); font-weight: 500; }

.button { min-height: 2.55rem; padding: 0 17px; border: 1px solid var(--ink); background: var(--ink); color: var(--paper); font-size: 12px; font-weight: 500; }
.files-layout { display: grid; grid-template-columns: 15.5rem minmax(0, 1fr); min-height: 410px; margin-top: 18px; border: 2px solid var(--ink); background: var(--white); }
.folder-panel { border-right: 1px solid var(--hair); background: var(--surface-2); }
.folder-panel header, .browser-head { min-height: 3.1rem; display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 0 14px; border-bottom: 1px solid var(--hair); }
.folder-panel header .label { margin: 0; }
.folder { width: 100%; min-height: 2.65rem; display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 0 14px; border: 0; border-left: 2px solid transparent; background: transparent; color: var(--mute); text-align: left; }
.folder.is-active { border-left-color: var(--lime); background: rgba(10, 10, 10, .06); color: var(--ink); font-weight: 600; }
.folder small { font: 10px var(--mono); }
.folder-note { margin: 14px; padding: 12px; border: 1px dashed rgba(10, 10, 10, .25); color: var(--soft); font: 10px/1.6 var(--mono); }
.file-browser { min-width: 0; display: flex; flex-direction: column; }
.file-columns { display: grid; grid-template-columns: minmax(180px, 1.6fr) repeat(3, minmax(100px, .7fr)) minmax(100px, .8fr); gap: 12px; padding: 9px 16px; border-bottom: 1px solid var(--hair); background: var(--surface-3); color: var(--soft); font: 9px var(--mono); text-transform: uppercase; letter-spacing: .09em; }
.empty-state { min-height: 290px; display: grid; align-content: center; justify-items: center; padding: 30px; text-align: center; color: var(--mute); }
.empty-state svg { width: 42px; height: 42px; margin-bottom: 14px; color: var(--soft); }
.empty-state strong { color: var(--ink); }
.empty-state p { max-width: 500px; margin: 8px 0 0; font-size: 12px; line-height: 1.65; }
.compact-empty { min-height: 220px; }
.state-contract { margin-top: 18px; border: 1px solid var(--hair); background: var(--white); }
.state-example { display: grid; grid-template-columns: 46px minmax(0, 1fr) auto auto; align-items: center; gap: 12px; padding: 16px; border-bottom: 1px solid var(--hair); }
.file-symbol { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid var(--ink); font: 9px var(--mono); }
.state-example strong, .state-example small { display: block; }
.state-example small { margin-top: 4px; color: var(--soft); font: 10px var(--mono); }
.state-explanation { margin: 0; padding: 13px 16px; color: var(--mute); font-size: 12px; line-height: 1.6; }

.chat-shell { min-height: calc(100vh - 3.25rem - 2rem - 48px); display: flex; flex-direction: column; border: 2px solid var(--ink); background: var(--paper); }
.chat-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 15px 18px; border-bottom: 1px solid var(--hair); background: var(--white); }
.chat-head h1 { margin: 0; font-size: 24px; letter-spacing: -.03em; }
.messages { flex: 1; display: flex; flex-direction: column; gap: 16px; padding: 28px; }
.message { max-width: min(680px, 84%); padding: 14px 16px; }
.message p { margin: 0; line-height: 1.65; }
.message-user { align-self: flex-end; background: var(--ink); color: var(--paper); }
.message-assistant { align-self: flex-start; border: 1px solid var(--hair); background: var(--white); }
.message-who { display: flex; align-items: center; gap: 7px; margin-bottom: 7px; color: var(--soft); font-size: 9px; font-weight: 600; text-transform: uppercase; letter-spacing: .12em; }
.message-user .message-who { color: rgba(248, 248, 243, .62); }
.answer-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 14px; background: var(--hair); }
.answer-facts span { padding: 9px 10px; background: var(--paper); color: var(--mute); font: 10px var(--mono); }
.answer-facts b { display: block; margin-bottom: 3px; color: var(--ink); font-weight: 500; }
.trace { display: block; margin-top: 11px; color: var(--soft); font: 9.5px var(--mono); }
.composer { display: flex; gap: 10px; padding: 13px 16px; border-top: 2px solid var(--ink); background: var(--white); }
.composer input { flex: 1; min-width: 0; height: 2.55rem; padding: 0 12px; border: 1px solid var(--hair); background: var(--paper); color: var(--mute); }

.statusbar { grid-area: status; display: flex; align-items: center; gap: 22px; padding: 0 22px; border-top: 1px solid var(--hair); background: var(--surface-2); color: var(--mute); font: 10px var(--mono); }
.status-right { margin-left: auto; display: inline-flex; align-items: center; gap: 7px; }

@media (max-width: 1000px) {
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .content-grid { grid-template-columns: 1fr; }
  .files-layout { grid-template-columns: 13rem minmax(0, 1fr); }
  .file-columns { grid-template-columns: minmax(160px, 1fr) repeat(2, 100px); }
  .file-columns span:nth-child(4), .file-columns span:nth-child(5) { display: none; }
}

@media (max-width: 760px) {
  .console { grid-template-columns: 3.5rem minmax(0, 1fr); grid-template-rows: 3.25rem minmax(0, 1fr) 2rem; grid-template-areas: "rail topbar" "rail main" "rail status"; }
  .sidebar { position: fixed; inset: 3.25rem auto 2rem 3.5rem; z-index: 5; width: 15.5rem; transform: translateX(-110%); border-right: 2px solid var(--ink); transition: transform .16s ease; }
  .sidebar.is-open { transform: translateX(0); }
  .mobile-menu { display: inline-flex; }
  .preview-state { display: none; }
  .view { padding: 14px; }
  .page-head { flex-direction: column; padding: 18px; }
  .mode-card { width: 100%; }
  .files-layout { grid-template-columns: 1fr; }
  .folder-panel { border-right: 0; border-bottom: 1px solid var(--hair); }
  .file-columns { display: none; }
  .state-example { grid-template-columns: 46px minmax(0, 1fr); }
  .state-example .badge { grid-column: auto; }
  .answer-facts { grid-template-columns: 1fr; }
  .message { max-width: 94%; }
}

@media (max-width: 480px) {
  .metric-grid { grid-template-columns: 1fr; }
  .topbar { padding: 0 12px; gap: 10px; }
  .topbar .chip { display: none; }
  .statusbar { padding: 0 12px; }
  .statusbar > span:first-child { display: none; }
}


/* #133 LIVE Files additions. Ink & Paper: square geometry, lime only for state. */
.hidden {
  display: none !important;
}

.button-small {
  min-height: 32px;
  padding: 6px 10px;
  font-size: 0.72rem;
}

.connection-state.is-live .state-dot {
  background: var(--lime);
  box-shadow: 0 0 0 3px rgb(190 242 100 / 18%);
}

.connection-state.is-locked .state-dot,
.connection-state.is-error .state-dot {
  background: var(--err);
}

.connection-state.is-connecting .state-dot {
  background: var(--warn);
}

.folder-list {
  display: grid;
}

.file-row {
  display: grid;
  grid-template-columns: minmax(240px, 2fr) repeat(3, minmax(110px, 0.75fr)) minmax(125px, 0.8fr);
  gap: 16px;
  align-items: center;
  min-height: 66px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--hair);
  background: var(--paper);
}

.file-row:hover {
  background: var(--surface-2);
}

.file-row > .badge {
  justify-self: start;
}

.file-row time {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--mute);
}

.file-name {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 12px;
}

.file-name > span:last-child {
  display: grid;
  min-width: 0;
  gap: 3px;
}

.file-name strong,
.file-name small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-name small {
  color: var(--mute);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.badge-danger {
  border-color: var(--err);
  color: var(--err);
  background: transparent;
}

.empty-state.is-error,
.empty-state.is-denied,
.empty-state.session-gate {
  min-height: 300px;
}

.empty-state.is-error {
  border-left: 3px solid var(--err);
}

.empty-state.is-denied {
  border-left: 3px solid var(--warn);
}

.empty-state.session-gate {
  border-left: 3px solid var(--ink);
}

html[data-mode="live"] .file-browser,
html[data-mode="live"] .folder-panel {
  box-shadow: 4px 4px 0 var(--ink);
}

html[data-mode="locked"] .file-browser {
  box-shadow: none;
}

@media (max-width: 1050px) {
  .file-row {
    grid-template-columns: minmax(220px, 1.6fr) repeat(3, minmax(92px, 0.7fr));
  }

  .file-row time,
  .file-columns span:last-child {
    display: none;
  }

  .file-columns {
    grid-template-columns: minmax(220px, 1.6fr) repeat(3, minmax(92px, 0.7fr));
  }
}

@media (max-width: 720px) {
  .file-row {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .file-row .file-name {
    grid-column: 1 / -1;
  }

  .file-row > .badge:last-of-type {
    grid-column: 1 / -1;
  }

  .file-columns {
    display: none;
  }

  .topbar .button-small {
    display: none;
  }
}

.file-columns {
  grid-template-columns: minmax(240px, 2fr) repeat(3, minmax(110px, 0.75fr)) minmax(125px, 0.8fr);
  gap: 16px;
}

.state-example {
  grid-template-columns: 46px minmax(0, 1fr) auto auto auto;
}