/* ============================================================
   Cass — operator's console
   typography: JetBrains Mono (UI) + Newsreader (assistant body)
   ============================================================ */

:root {
  /* surfaces */
  --bg:               #0c0d10;
  --bg-grain:         #0d0e12;
  --surface-1:        #14161b;
  --surface-2:        #1a1d23;
  --surface-3:        #22262d;

  /* lines */
  --line:             #1f232a;
  --line-bright:      #2c313a;
  --line-glow:        #3a414c;

  /* ink */
  --ink-1:            #e9e6dd;     /* primary, paper-ish */
  --ink-2:            #b6b1a4;
  --ink-3:            #807a6d;
  --ink-4:            #555048;
  --ink-faint:        #322f29;

  /* accent — copper / honey */
  --accent:           #d4a574;
  --accent-soft:      #b08855;
  --accent-dim:       #6e5237;
  --accent-glow:      rgba(212,165,116,0.14);

  /* user message tint — cool counterpoint to copper */
  --tint-user:        #1a2129;
  --tint-user-bright: #25303c;

  /* semantic */
  --ok:               #7fa382;
  --warn:             #c69553;
  --err:              #b16d6d;

  /* type */
  --mono:             "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --serif:            "Newsreader", ui-serif, Georgia, "Times New Roman", serif;

  /* sizes */
  --t-xs:             10.5px;
  --t-sm:             11.5px;
  --t-base:           13px;
  --t-md:             14px;
  --t-lg:             16px;
  --t-xl:             20px;
  --t-2xl:            28px;
  --t-serif:          17px;
  --t-serif-lg:       19px;

  /* layout */
  --rail-w:           296px;
  --read-cap:         none;

  /* motion */
  --ease:             cubic-bezier(.2,.7,.2,1);
}

/* reset */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--ink-1);
  font-family: var(--mono);
  font-size: var(--t-base);
  font-weight: 400;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "liga" 1, "calt" 1, "ss01" 1;
  overflow: hidden;
}

button {
  font: inherit; color: inherit;
  background: transparent; border: 0;
  cursor: pointer;
  padding: 0;
}
input, textarea, select {
  font: inherit; color: inherit;
  background: transparent; border: 0;
  outline: 0;
}
input::placeholder, textarea::placeholder { color: var(--ink-4); }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-soft); }

::selection { background: var(--accent-glow); color: var(--ink-1); }

/* scrollbar — subtle */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--surface-3) transparent;
}
*::-webkit-scrollbar { width: 8px; height: 8px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--surface-3); border-radius: 4px; }
*::-webkit-scrollbar-thumb:hover { background: var(--line-glow); }

/* ============================================================
   ambient texture — barely-there CRT/paper grain
   ============================================================ */
.ambient {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    /* hairline grid */
    linear-gradient(to right,  rgba(255,255,255,0.012) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.012) 1px, transparent 1px),
    /* corner glow */
    radial-gradient(ellipse 80% 60% at 0% 0%, rgba(212,165,116,0.04), transparent 70%),
    radial-gradient(ellipse 60% 50% at 100% 100%, rgba(80,100,140,0.025), transparent 70%);
  background-size: 64px 64px, 64px 64px, 100% 100%, 100% 100%;
}

/* ============================================================
   layout shell
   ============================================================ */
body {
  display: grid;
  grid-template-columns: var(--rail-w) 1fr;
  grid-template-rows: 100dvh;
}

.rail {
  position: relative;
  z-index: 2;
  background: var(--surface-1);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  height: 100dvh;
  overflow: hidden;
}

.stage {
  position: relative;
  z-index: 1;
  height: 100dvh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* ============================================================
   rail header
   ============================================================ */
.rail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 18px 14px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex; align-items: baseline;
  gap: 8px;
  font-size: var(--t-md);
  font-weight: 500;
  letter-spacing: 0.02em;
}
.brand-mark {
  display: inline-flex;
  align-items: center; justify-content: center;
  width: 22px; height: 22px;
  font-size: 11px; font-weight: 600;
  color: var(--bg);
  background: var(--accent);
  border-radius: 2px;
  font-family: var(--mono);
  position: relative;
  top: 2px;
}
.brand-name { color: var(--ink-1); }
.brand-meta { color: var(--ink-4); font-size: var(--t-xs); margin-left: 2px; letter-spacing: 0.06em; }

.icon-btn {
  width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--ink-3);
  border: 1px solid transparent;
  border-radius: 3px;
  transition: color 120ms var(--ease), background 120ms var(--ease), border 120ms var(--ease);
}
.icon-btn:hover {
  color: var(--ink-1);
  background: var(--surface-2);
  border-color: var(--line);
}
.icon-btn:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 1px;
}

/* ============================================================
   rail nav (tabs)
   ============================================================ */
.rail-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
}
.nav-tab {
  padding: 11px 8px 10px;
  text-align: center;
  font-size: var(--t-sm);
  letter-spacing: 0.04em;
  color: var(--ink-3);
  border-right: 1px solid var(--line);
  position: relative;
  transition: color 120ms var(--ease);
}
.nav-tab:last-child { border-right: 0; }
.nav-tab:hover { color: var(--ink-1); }
.nav-tab.active {
  color: var(--ink-1);
  background: var(--surface-2);
}
.nav-tab.active::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: -1px; height: 2px;
  background: var(--accent);
}

/* ============================================================
   rail search
   ============================================================ */
.rail-search {
  display: flex; align-items: center;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  gap: 8px;
}
.rail-search .search-glyph { color: var(--ink-4); flex-shrink: 0; }
.rail-search input {
  flex: 1;
  font-family: var(--mono);
  font-size: var(--t-sm);
  color: var(--ink-1);
  letter-spacing: 0.01em;
}
.rail-search input::-webkit-search-cancel-button { display: none; }

/* ============================================================
   conversation sections (sidebar list)
   ============================================================ */
.rail-body {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  padding-bottom: 8px;
}

.conv-sections { display: flex; flex-direction: column; }

.conv-section {
  display: flex; flex-direction: column;
}
.conv-section-head {
  padding: 14px 18px 6px;
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-4);
  display: flex; align-items: center; gap: 8px;
}
.conv-section-head::after {
  content: ""; flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--line), transparent);
}
.conv-section-head .count {
  font-size: 9.5px;
  color: var(--ink-4);
  font-variant-numeric: tabular-nums;
}

.conv-row {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  cursor: pointer;
  border-left: 2px solid transparent;
  transition: background 100ms var(--ease), border-color 100ms var(--ease);
}
.conv-row:hover { background: var(--surface-2); }
.conv-row.active {
  background: var(--surface-2);
  border-left-color: var(--accent);
}
.conv-row .conv-title {
  font-size: var(--t-sm);
  color: var(--ink-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 400;
}
.conv-row.active .conv-title { color: var(--accent); }
.conv-row .conv-time {
  font-size: 9.5px;
  color: var(--ink-4);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}
.conv-row .conv-pin {
  position: absolute;
  left: 6px; top: 50%; transform: translateY(-50%);
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ============================================================
   rail footer / usage bar
   ============================================================ */
.rail-footer {
  padding: 10px 16px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--t-xs);
  color: var(--ink-3);
  background: var(--bg-grain);
}
.usage-line { display: inline-flex; gap: 5px; align-items: baseline; }
.usage-line.warn  .usage-cap { color: var(--warn); }
.usage-line.crit  .usage-cap { color: var(--err); }
.usage-cap { color: var(--ink-2); letter-spacing: 0.02em; font-variant-numeric: tabular-nums; }
.usage-sep { color: var(--ink-4); }

.text-btn {
  font-size: var(--t-xs);
  color: var(--ink-3);
  letter-spacing: 0.04em;
  padding: 4px 6px;
  transition: color 100ms var(--ease);
}
.text-btn:hover { color: var(--ink-1); }

/* ============================================================
   stage / view shell
   ============================================================ */
.view {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.view[hidden] { display: none !important; }

.stage-head {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: 22px 32px 18px;
  border-bottom: 1px solid var(--line);
  gap: 24px;
  flex-shrink: 0;
}
.crumb { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.crumb-label {
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-4);
}
.crumb-title {
  font-size: var(--t-md);
  color: var(--ink-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: 0.005em;
}
.stage-meta {
  display: flex; align-items: center; gap: 10px;
  font-size: var(--t-xs); color: var(--ink-3);
  white-space: nowrap;
}

/* ============================================================
   transcript / messages
   ============================================================ */
.transcript {
  flex: 1 1 auto;
  overflow-y: auto;
  /* No `scroll-behavior: smooth` — every SSE chunk + every replaceMessages
     calls scrollToBottom(), and with smooth scroll the browser animated
     the entire transcript top→bottom on each update, looking like the
     view was repeatedly chasing itself down the page. Default (auto)
     snaps instantly. Use scrollIntoView({behavior: 'smooth'}) explicitly
     for one-off cases like search-result jumps. */
  padding: 28px 32px 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.msg {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 16px;
  position: relative;
  animation: msg-in 220ms var(--ease) both;
}
@keyframes msg-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: none; }
}

.msg .gutter {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-4);
  text-align: right;
  padding-top: 4px;
  user-select: none;
  border-right: 1px solid var(--line);
  padding-right: 14px;
}
.msg.user   .gutter { color: var(--ink-3); }
.msg.assistant .gutter { color: var(--accent-soft); }

.msg .body {
  min-width: 0;
  max-width: var(--read-cap);
}

.msg.assistant .body {
  font-family: var(--serif);
  font-size: var(--t-serif);
  line-height: 1.65;
  color: var(--ink-1);
  font-feature-settings: "kern" 1, "liga" 1;
  letter-spacing: 0;
}
.msg.assistant .body > :first-child { margin-top: 0; }
.msg.assistant .body > :last-child  { margin-bottom: 0; }

/* queued user messages: not yet sent — visible but visibly pending */
.msg.user.queued { opacity: 0.55; }
.msg.user.queued .body { border-style: dashed; }
.msg.user.queued .gutter::after {
  content: " ▸ queued";
  color: var(--accent-soft);
  font-size: 9px;
  letter-spacing: 0.08em;
}

.msg.user .body {
  font-family: var(--mono);
  font-size: var(--t-md);
  color: var(--ink-1);
  background: var(--tint-user);
  padding: 12px 14px;
  border: 1px solid var(--line-bright);
  border-radius: 3px;
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* assistant markdown */
.msg.assistant .body p { margin: 0 0 0.85em; }
.msg.assistant .body h1,
.msg.assistant .body h2,
.msg.assistant .body h3 {
  font-family: var(--mono);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-1);
  margin: 1.4em 0 0.5em;
  font-size: var(--t-md);
  text-transform: none;
}
.msg.assistant .body h1 { font-size: var(--t-lg); }
.msg.assistant .body code {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--accent);
  background: var(--surface-2);
  padding: 1px 5px;
  border-radius: 2px;
  border: 1px solid var(--line);
}
.msg.assistant .body pre {
  font-family: var(--mono);
  font-size: var(--t-base);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 12px 14px;
  overflow-x: auto;
  margin: 12px 0;
  line-height: 1.5;
  color: var(--ink-1);
}
.msg.assistant .body pre code {
  background: transparent;
  padding: 0; border: 0;
  color: inherit;
  font-size: inherit;
}
.msg.assistant .body ul,
.msg.assistant .body ol { padding-left: 22px; margin: 0.6em 0; }
.msg.assistant .body li { margin: 0.2em 0; }
.msg.assistant .body blockquote {
  border-left: 2px solid var(--accent-dim);
  padding-left: 14px;
  margin: 0.8em 0;
  color: var(--ink-2);
  font-style: italic;
}
.msg.assistant .body a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent-dim);
  text-underline-offset: 3px;
}
.msg.assistant .body table {
  font-family: var(--mono);
  font-size: var(--t-base);
  border-collapse: collapse;
  margin: 12px 0;
}
.msg.assistant .body th,
.msg.assistant .body td {
  border-bottom: 1px solid var(--line);
  padding: 6px 12px 6px 0;
  text-align: left;
}
.msg.assistant .body th {
  font-weight: 500;
  color: var(--ink-2);
  font-size: var(--t-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* tool trace block — terminal style */
.tool-trace {
  font-family: var(--mono);
  font-size: var(--t-sm);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0;
  margin: 14px 0;
  overflow: hidden;
}
.tool-trace-head {
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-4);
  padding: 7px 12px;
  background: var(--bg-grain);
  border-bottom: 1px solid var(--line);
  display: flex; gap: 10px; align-items: center;
}
.tool-trace-head .dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent); flex-shrink: 0;
}
.tool-row {
  display: grid;
  grid-template-columns: 14px 80px 1fr;
  gap: 10px;
  padding: 5px 12px;
  border-bottom: 1px dashed var(--line);
  align-items: baseline;
}
.tool-row:last-child { border-bottom: 0; }
.tool-row .glyph {
  color: var(--accent);
  font-size: var(--t-sm);
  text-align: center;
}
.tool-row.err .glyph { color: var(--err); }
.tool-row .name {
  color: var(--ink-2);
  font-weight: 500;
  letter-spacing: 0.02em;
}
.tool-row.err .name { color: var(--err); }
.tool-row .summary {
  color: var(--ink-3);
  font-size: var(--t-base);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* file pills */
.file-pills {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 12px;
}
.file-pill {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono);
  font-size: var(--t-sm);
  background: var(--surface-2);
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: 2px;
  color: var(--ink-2);
}
.file-pill:hover { color: var(--ink-1); border-color: var(--line-bright); }
.file-pill .file-size {
  color: var(--ink-4);
  font-size: var(--t-xs);
}

/* user attachments preview row */
.msg .files {
  margin-top: 8px;
  display: flex; flex-wrap: wrap; gap: 6px;
}
.msg .files img {
  max-width: 140px; max-height: 140px;
  border: 1px solid var(--line-bright);
  border-radius: 2px;
  display: block;
}
.msg .files .file-name {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: var(--t-sm);
  color: var(--ink-3);
}

/* streaming caret */
.streaming-caret {
  display: inline-block;
  width: 7px; height: 1em;
  background: var(--accent);
  vertical-align: -2px;
  margin-left: 2px;
  animation: caret-blink 800ms steps(2, end) infinite;
}
@keyframes caret-blink {
  to { opacity: 0; }
}

/* progress indicator (persists during tool runs) */
.progress {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--mono);
  font-size: var(--t-sm);
  color: var(--ink-3);
  padding: 8px 12px;
  margin-left: 76px;     /* align with .body column */
  max-width: var(--read-cap);
  border-left: 2px solid var(--accent);
  background: linear-gradient(to right, var(--accent-glow), transparent 40%);
}
.progress .pulse {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  animation: pulse 1.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50%      { opacity: 1.0; transform: scale(1.25); }
}
.progress .label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.progress .label-strong {
  color: var(--ink-1);
}

/* error strip */
.err-strip {
  background: rgba(177,109,109,0.08);
  border: 1px solid rgba(177,109,109,0.32);
  color: var(--err);
  padding: 8px 12px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: var(--t-sm);
  margin: 4px 0;
}

/* ============================================================
   empty state
   ============================================================ */
.empty-state {
  display: flex; flex-direction: column;
  justify-content: center; align-items: flex-start;
  gap: 12px;
  padding: 60px 20px 80px;
  max-width: var(--read-cap);
  animation: msg-in 320ms var(--ease) both;
}
.empty-state .empty-mark {
  font-family: var(--serif);
  font-size: 88px;
  font-weight: 400;
  font-style: italic;
  color: var(--accent-dim);
  line-height: 1;
  margin-bottom: 4px;
}
.empty-state h1 {
  font-family: var(--mono);
  font-size: var(--t-xl);
  font-weight: 500;
  letter-spacing: 0.005em;
  color: var(--ink-1);
  margin: 0;
}
.empty-state p {
  font-family: var(--serif);
  font-size: var(--t-serif);
  color: var(--ink-2);
  line-height: 1.6;
  margin: 0;
}

/* ============================================================
   composer
   ============================================================ */
.composer {
  flex-shrink: 0;
  border-top: 1px solid var(--line);
  padding: 14px 32px 18px;
  background: var(--bg-grain);
  position: relative;
}

.composer-attached {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-bottom: 8px;
}
.composer-attached:empty { display: none; }
.attachment-chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--surface-2);
  border: 1px solid var(--line-bright);
  padding: 3px 8px 3px 4px;
  border-radius: 2px;
  font-size: var(--t-sm);
  color: var(--ink-2);
}
.attachment-chip img {
  width: 26px; height: 26px;
  object-fit: cover;
  border-radius: 2px;
}
.attachment-chip .x {
  color: var(--ink-4);
  margin-left: 2px;
  font-size: 12px;
  padding: 0 2px;
}
.attachment-chip .x:hover { color: var(--err); }

.composer-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: end;
  background: var(--surface-2);
  border: 1px solid var(--line-bright);
  border-radius: 4px;
  padding: 10px 12px;
  transition: border-color 120ms var(--ease), box-shadow 120ms var(--ease);
}
.composer-row:focus-within {
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.composer-row textarea {
  resize: none;
  font-family: var(--mono);
  font-size: var(--t-md);
  color: var(--ink-1);
  background: transparent;
  border: 0; outline: 0;
  padding: 4px 0;
  min-height: 24px;
  max-height: 240px;
  line-height: 1.55;
  overflow-y: auto;
}

.composer-actions {
  display: flex; gap: 4px; align-items: center;
}

.send-btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono);
  font-size: var(--t-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 6px 12px;
  background: var(--accent);
  color: var(--bg);
  border-radius: 3px;
  transition: background 120ms var(--ease), opacity 120ms var(--ease);
}
.send-btn:hover { background: var(--accent-soft); }
.send-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.send-btn .send-label { letter-spacing: 0.06em; text-transform: uppercase; }

.composer-status {
  margin-top: 8px;
  font-size: var(--t-xs);
  color: var(--ink-4);
  letter-spacing: 0.04em;
}
.kbd {
  font-family: var(--mono);
  font-size: 10px;
  padding: 1px 5px;
  border: 1px solid var(--line-bright);
  border-radius: 2px;
  color: var(--ink-2);
  background: var(--surface-1);
  margin: 0 1px;
}

/* drag overlay */
body.dragover .stage::after {
  content: "drop to attach";
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono);
  font-size: var(--t-md);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(212,165,116,0.06);
  border: 2px dashed var(--accent-dim);
  pointer-events: none;
  z-index: 10;
}

/* ============================================================
   panel views (memories, schedules, passkeys)
   ============================================================ */
.view-panel { padding: 0; }

.card-list {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 24px 32px 32px;
  display: flex; flex-direction: column;
  gap: 12px;
}

.card {
  background: var(--surface-1);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 14px 16px;
  display: flex; flex-direction: column;
  gap: 8px;
  transition: border-color 120ms var(--ease);
}
.card:hover { border-color: var(--line-bright); }

.card-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 12px;
}
.card-title {
  font-family: var(--mono);
  font-size: var(--t-md);
  color: var(--ink-1);
  letter-spacing: 0.005em;
  font-weight: 500;
}
.card-tag {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  border: 1px solid var(--line-bright);
  padding: 2px 7px;
  border-radius: 2px;
}
.card-tag.hot { color: var(--accent); border-color: var(--accent-dim); }
.card-tag.cold { color: var(--ink-3); }
.card-tag.disabled { opacity: 0.5; }

.card-content {
  font-family: var(--mono);
  font-size: var(--t-sm);
  color: var(--ink-2);
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 9em;
  overflow: hidden;
  position: relative;
}
.card-content.expanded { max-height: none; }
.card-content::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 24px;
  background: linear-gradient(to bottom, transparent, var(--surface-1));
  pointer-events: none;
}
.card-content.expanded::after { display: none; }

.card-meta {
  font-family: var(--mono);
  font-size: var(--t-xs);
  color: var(--ink-4);
  letter-spacing: 0.04em;
}

.card-actions {
  display: flex; gap: 4px;
  margin-top: 4px;
  padding-top: 8px;
  border-top: 1px dashed var(--line);
}

.ghost-btn {
  font-family: var(--mono);
  font-size: var(--t-xs);
  letter-spacing: 0.06em;
  padding: 5px 10px;
  border: 1px solid var(--line-bright);
  border-radius: 2px;
  color: var(--ink-2);
  background: transparent;
  transition: color 100ms var(--ease), border-color 100ms var(--ease), background 100ms var(--ease);
}
.ghost-btn:hover {
  color: var(--ink-1);
  border-color: var(--line-glow);
  background: var(--surface-2);
}
.ghost-btn.danger { color: var(--err); border-color: rgba(177,109,109,0.32); }
.ghost-btn.danger:hover { background: rgba(177,109,109,0.08); }

.primary-btn {
  font-family: var(--mono);
  font-size: var(--t-sm);
  letter-spacing: 0.04em;
  padding: 6px 14px;
  background: var(--accent);
  color: var(--bg);
  border-radius: 3px;
  font-weight: 500;
}
.primary-btn:hover { background: var(--accent-soft); }

.filter {
  font-family: var(--mono);
  font-size: var(--t-sm);
  background: var(--surface-2);
  border: 1px solid var(--line);
  padding: 5px 10px;
  border-radius: 2px;
  color: var(--ink-1);
  width: 280px;
  max-width: 50vw;
}
.filter:focus { border-color: var(--accent-dim); }

/* empty messaging in panels */
.panel-empty {
  font-family: var(--serif);
  font-style: italic;
  font-size: var(--t-serif);
  color: var(--ink-3);
  padding: 40px 0;
  text-align: center;
}

/* ============================================================
   search results
   ============================================================ */
.search-results {
  list-style: none;
  margin: 0; padding: 4px 0 8px;
}
.search-results li {
  padding: 8px 18px;
  cursor: pointer;
  border-bottom: 1px solid var(--line);
  transition: background 100ms var(--ease);
}
.search-results li:hover { background: var(--surface-2); }
.search-results .res-title {
  font-size: var(--t-sm);
  color: var(--ink-1);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.search-results .res-snip {
  font-size: var(--t-xs);
  color: var(--ink-3);
  line-height: 1.5;
}
.search-results .res-snip em {
  color: var(--ink-2);
  font-style: normal;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 9.5px;
  margin-right: 4px;
}
.search-results mark {
  background: var(--accent-glow);
  color: var(--accent);
  padding: 0 2px;
  border-radius: 1px;
}
.search-results .empty {
  color: var(--ink-3);
  font-style: italic;
  cursor: default;
}
.search-results .empty:hover { background: transparent; }

/* ============================================================
   conversation context menu
   ============================================================ */
.conv-menu {
  position: fixed;
  z-index: 60;
  background: var(--surface-2);
  border: 1px solid var(--line-bright);
  border-radius: 3px;
  padding: 4px;
  min-width: 140px;
  box-shadow:
    0 8px 24px rgba(0,0,0,0.4),
    0 1px 0 rgba(255,255,255,0.03) inset;
  animation: menu-in 90ms var(--ease) both;
}
@keyframes menu-in {
  from { opacity: 0; transform: translateY(-2px); }
  to   { opacity: 1; transform: none; }
}
.conv-menu button {
  display: block;
  width: 100%;
  text-align: left;
  font-family: var(--mono);
  font-size: var(--t-sm);
  padding: 6px 10px;
  color: var(--ink-2);
  border-radius: 2px;
}
.conv-menu button:hover { background: var(--surface-3); color: var(--ink-1); }
.conv-menu button.danger:hover { background: rgba(177,109,109,0.1); color: var(--err); }

/* ============================================================
   modal dialogs
   ============================================================ */
dialog.modal {
  background: var(--surface-1);
  border: 1px solid var(--line-bright);
  border-radius: 4px;
  color: var(--ink-1);
  padding: 0;
  max-width: 540px;
  width: 90vw;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}
dialog.modal-narrow { max-width: 380px; }
dialog.modal::backdrop {
  background: rgba(8,9,12,0.72);
  backdrop-filter: blur(2px);
}
dialog.modal form {
  padding: 22px 24px 18px;
  display: flex; flex-direction: column; gap: 12px;
}
dialog.modal h3 {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: var(--t-md);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-1);
}
dialog.modal label {
  display: flex; flex-direction: column; gap: 5px;
  font-family: var(--mono);
  font-size: var(--t-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
dialog.modal label.inline {
  flex-direction: row; align-items: center; gap: 8px;
  text-transform: none; letter-spacing: 0; font-size: var(--t-sm); color: var(--ink-2);
}
dialog.modal input[type="text"],
dialog.modal input[type="search"],
dialog.modal textarea,
dialog.modal select {
  font-family: var(--mono);
  font-size: var(--t-md);
  background: var(--surface-2);
  border: 1px solid var(--line-bright);
  padding: 7px 10px;
  border-radius: 2px;
  color: var(--ink-1);
  text-transform: none; letter-spacing: 0;
}
dialog.modal textarea { resize: vertical; line-height: 1.5; }
dialog.modal input:focus,
dialog.modal textarea:focus,
dialog.modal select:focus {
  border-color: var(--accent-dim);
}
dialog.modal .hint {
  font-size: var(--t-xs);
  color: var(--ink-4);
  letter-spacing: 0.02em;
  text-transform: none;
  margin-top: -2px;
}
.modal-actions {
  display: flex; justify-content: flex-end; gap: 8px;
  margin-top: 8px;
}

/* ============================================================
   toasts
   ============================================================ */
.toast-region {
  position: fixed;
  bottom: 16px; right: 16px;
  display: flex; flex-direction: column-reverse;
  gap: 8px;
  z-index: 100;
  pointer-events: none;
}
.toast {
  background: var(--surface-2);
  border: 1px solid var(--line-bright);
  color: var(--ink-1);
  padding: 8px 14px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: var(--t-sm);
  box-shadow: 0 8px 20px rgba(0,0,0,0.35);
  animation: toast-in 200ms var(--ease) both;
  pointer-events: auto;
  min-width: 200px;
}
.toast.err { border-color: rgba(177,109,109,0.38); color: var(--err); }
.toast.ok  { border-left: 2px solid var(--ok); }
@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

/* ============================================================
   rail toggle (mobile)
   ============================================================ */
.rail-toggle {
  display: none;
  position: fixed;
  z-index: 50;
  top: 12px; left: 12px;
  width: 36px; height: 36px;
  background: var(--surface-2);
  border: 1px solid var(--line-bright);
  border-radius: 3px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 3px;
}
.rail-toggle span {
  display: block; width: 14px; height: 1px;
  background: var(--ink-1);
}

/* ============================================================
   responsive
   ============================================================ */
@media (max-width: 880px) {
  body { grid-template-columns: 1fr; }
  .rail {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: 86vw;
    max-width: 320px;
    transform: translateX(-100%);
    transition: transform 240ms var(--ease);
    box-shadow: 0 0 80px rgba(0,0,0,0.4);
  }
  body.rail-open .rail { transform: translateX(0); }
  body.rail-open::before {
    content: "";
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1;
  }
  .rail-toggle { display: inline-flex; }
  .stage-head { padding: 22px 20px 16px 56px; }
  .transcript { padding: 22px 20px 12px; }
  .composer { padding: 12px 20px 18px; }
  .msg { grid-template-columns: 38px 1fr; gap: 10px; }
  .msg .gutter { padding-right: 8px; font-size: 9px; }
  .progress { margin-left: 48px; }
  .card-list { padding: 18px 20px 28px; }
  .filter { width: 200px; }
}

/* small screens — tighter still */
@media (max-width: 480px) {
  :root { --rail-w: 100vw; }
  .stage-head { padding: 20px 16px 14px 56px; }
  .transcript { padding: 18px 16px 12px; }
  .composer { padding: 10px 16px 16px; }
  .msg { grid-template-columns: 32px 1fr; gap: 8px; }
  .msg .gutter { font-size: 8.5px; padding-right: 6px; }
  .msg.assistant .body { font-size: 16px; }
  .stage-meta { font-size: 9.5px; }
  .send-btn .send-label { display: none; }
  .send-btn { padding: 6px 8px; }
  .progress { margin-left: 40px; padding: 6px 10px; }
}

/* reduce motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}