/* jacq-web styles — based on Cass UI */
:root {
  --bg:           #0c0d10;
  --bg-grain:     #0e0f13;
  --surface-1:    #13141a;
  --surface-2:    #181920;
  --surface-3:    #1f2028;
  --line:         rgba(255,255,255,0.06);
  --line-bright:  rgba(255,255,255,0.10);
  --line-glow:    rgba(255,255,255,0.18);
  --ink-1:        #e8e4dc;
  --ink-2:        #a8a49c;
  --ink-3:        #6e6b65;
  --ink-4:        #4a4845;
  --accent:       #d4a574;
  --accent-soft:  #e0b888;
  --accent-dim:   rgba(212,165,116,0.35);
  --accent-glow:  rgba(212,165,116,0.08);
  --err:          #b16d6d;
  --ok:           #7aab8a;
  --mono:         'JetBrains Mono', monospace;
  --serif:        'Newsreader', Georgia, serif;
  --t-xs:         11px;
  --t-sm:         12px;
  --t-md:         13px;
  --t-xl:         16px;
  --t-serif:      15px;
  --rail-w:       240px;
  --read-cap:     680px;
  --ease:         cubic-bezier(0.2,0,0,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
button { cursor: pointer; border: 0; background: none; color: inherit; font: inherit; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
input, textarea, select { font: inherit; color: inherit; }
input[type="search"]::-webkit-search-cancel-button { display: none; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--ink-1);
  font-family: var(--mono);
  font-size: var(--t-md);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

body {
  display: grid;
  grid-template-columns: var(--rail-w) 1fr;
  grid-template-rows: 100vh;
}

/* ambient background */
.ambient {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(ellipse 60% 40% at 20% 80%, rgba(212,165,116,0.04) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 80% 20%, rgba(120,100,180,0.03) 0%, transparent 70%);
}

/* ============================================================
   RAIL
   ============================================================ */
.rail {
  grid-column: 1;
  display: flex; flex-direction: column;
  background: var(--surface-1);
  border-right: 1px solid var(--line);
  height: 100vh;
  overflow: hidden;
  position: relative;
  z-index: 10;
}

.rail-header {
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex; align-items: center; gap: 8px;
}
.brand-mark {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  font-style: italic;
  color: var(--accent);
  line-height: 1;
}
.brand-name {
  font-family: var(--mono);
  font-size: var(--t-md);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-1);
}
.brand-meta {
  font-size: var(--t-xs);
  color: var(--ink-4);
  letter-spacing: 0.04em;
}

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  color: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: 3px;
  transition: color 100ms var(--ease), border-color 100ms var(--ease), background 100ms var(--ease);
}
.icon-btn:hover { color: var(--ink-1); border-color: var(--line-bright); background: var(--surface-2); }

.rail-body {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 8px 0;
}

.conv-list {
  list-style: none;
  padding: 0 6px;
  display: flex; flex-direction: column; gap: 1px;
}

.conv-item { border-radius: 3px; overflow: hidden; }
.conv-item.active { background: var(--surface-2); }

.conv-btn {
  display: block; width: 100%;
  text-align: left;
  padding: 7px 12px;
  border-radius: 3px;
  transition: background 100ms var(--ease);
  color: var(--ink-2);
  font-family: var(--mono);
  font-size: var(--t-sm);
}
.conv-btn:hover { background: var(--surface-2); color: var(--ink-1); }
.conv-item.active .conv-btn { color: var(--ink-1); }

.conv-title {
  display: block;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  max-width: 190px;
}

.rail-footer {
  flex-shrink: 0;
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  display: flex; align-items: center; justify-content: flex-end;
}

.text-btn {
  font-family: var(--mono);
  font-size: var(--t-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 4px 8px;
  transition: color 100ms var(--ease);
}
.text-btn:hover { color: var(--ink-1); }

/* ============================================================
   STAGE
   ============================================================ */
.stage {
  grid-column: 2;
  display: flex; flex-direction: column;
  height: 100vh;
  overflow: hidden;
  background: var(--bg-grain);
  position: relative;
}

.view {
  display: flex; flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.stage-head {
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 32px 14px;
  border-bottom: 1px solid var(--line);
}

.crumb { display: flex; align-items: baseline; gap: 10px; }
.crumb-label {
  font-family: var(--mono);
  font-size: var(--t-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.crumb-title {
  font-family: var(--mono);
  font-size: var(--t-sm);
  color: var(--ink-2);
  max-width: 300px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

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

/* ============================================================
   TRANSCRIPT
   ============================================================ */
.transcript {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 24px 32px 20px;
  display: flex; flex-direction: column;
  gap: 20px;
}

.msg {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 12px;
  animation: msg-in 200ms var(--ease) both;
  max-width: var(--read-cap);
}
@keyframes msg-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

.msg .gutter {
  padding-top: 2px;
  padding-right: 12px;
  text-align: right;
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
  white-space: nowrap;
  flex-shrink: 0;
}

.msg.user .gutter { color: var(--accent-dim); }
.msg.user .body   { color: var(--ink-2); }

.msg .body {
  font-family: var(--serif);
  font-size: var(--t-serif);
  line-height: 1.65;
  color: var(--ink-1);
  overflow-wrap: break-word;
  word-break: break-word;
}

/* markdown inside .body */
.msg .body p { margin: 0 0 0.75em; }
.msg .body p:last-child { margin-bottom: 0; }
.msg .body h1,.msg .body h2,.msg .body h3,.msg .body h4 {
  font-family: var(--mono);
  font-weight: 500;
  margin: 1em 0 0.4em;
  color: var(--ink-1);
}
.msg .body h1 { font-size: 17px; }
.msg .body h2 { font-size: 15px; }
.msg .body h3 { font-size: var(--t-md); }
.msg .body ul, .msg .body ol {
  padding-left: 1.4em;
  margin: 0.4em 0 0.75em;
}
.msg .body li { margin-bottom: 0.25em; }
.msg .body code {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--surface-2);
  border: 1px solid var(--line-bright);
  padding: 1px 5px;
  border-radius: 2px;
  color: var(--ink-1);
}
.msg .body pre {
  background: var(--surface-1);
  border: 1px solid var(--line-bright);
  border-radius: 3px;
  padding: 14px 16px;
  overflow-x: auto;
  margin: 0.6em 0 0.75em;
}
.msg .body pre code {
  background: none; border: none; padding: 0;
  font-size: 12px; line-height: 1.6;
}
.msg .body blockquote {
  border-left: 2px solid var(--accent-dim);
  padding-left: 12px;
  color: var(--ink-3);
  margin: 0.5em 0;
}
.msg .body hr { border: none; border-top: 1px solid var(--line-bright); margin: 1em 0; }
.msg .body table { border-collapse: collapse; width: 100%; margin: 0.5em 0; }
.msg .body th, .msg .body td {
  border: 1px solid var(--line-bright);
  padding: 5px 10px;
  font-size: var(--t-sm);
  text-align: left;
}
.msg .body th { background: var(--surface-1); color: var(--ink-2); }
.msg .body a { color: var(--accent); }

/* 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 */
.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: 68px;
  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;
  max-width: var(--read-cap);
  margin-left: 68px;
}

/* ============================================================
   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-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;
}

/* ============================================================
   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);
  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); }

/* ============================================================
   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; }
}

/* ============================================================
   LOGIN
   ============================================================ */
.login-wrap {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
}
.login-card {
  width: 340px;
  background: var(--surface-1);
  border: 1px solid var(--line-bright);
  border-radius: 4px;
  padding: 32px 28px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}
.field-label {
  display: block;
  font-family: var(--mono);
  font-size: var(--t-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 6px;
}
.login-card input[type="password"] {
  width: 100%;
  font-family: var(--mono);
  font-size: var(--t-md);
  background: var(--surface-2);
  border: 1px solid var(--line-bright);
  padding: 8px 12px;
  border-radius: 2px;
  color: var(--ink-1);
  outline: 0;
}
.login-card input:focus { border-color: var(--accent-dim); }
.login-err {
  color: var(--err);
  font-size: var(--t-sm);
  margin-top: 8px;
}

/* ============================================================
   RAIL TOGGLE + RESPONSIVE
   ============================================================ */
.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); }

@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 { grid-column: 1; }
  .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; }
  .err-strip { margin-left: 48px; }
}

@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; }
  .send-btn .send-label { display: none; }
  .send-btn { padding: 6px 8px; }
  .progress { margin-left: 40px; padding: 6px 10px; }
  .err-strip { margin-left: 40px; }
}

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

/* ============================================================
   LOGIN HINT + PASSKEY MODAL
   ============================================================ */
.login-hint {
  font-family: var(--serif);
  font-style: italic;
  font-size: var(--t-sm);
  color: var(--ink-3);
  line-height: 1.5;
}

dialog.modal {
  background: var(--surface-1);
  border: 1px solid var(--line-bright);
  border-radius: 4px;
  color: var(--ink-1);
  padding: 0;
  max-width: 480px;
  width: 90vw;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}
dialog.modal::backdrop {
  background: rgba(8,9,12,0.72);
  backdrop-filter: blur(2px);
}
.modal-inner { padding: 22px 24px 18px; display: flex; flex-direction: column; gap: 12px; }
.modal-inner h3 {
  margin: 0;
  font-family: var(--mono);
  font-size: var(--t-md);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-1);
}
.modal-sub {
  font-family: var(--serif);
  font-size: var(--t-sm);
  color: var(--ink-3);
  line-height: 1.5;
  margin: 0;
}
.keys-list { display: flex; flex-direction: column; gap: 8px; margin: 4px 0; }
.keys-empty {
  font-family: var(--serif);
  font-style: italic;
  font-size: var(--t-sm);
  color: var(--ink-3);
  padding: 16px 0;
  text-align: center;
}
.key-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 10px 12px;
}
.key-meta { display: flex; flex-direction: column; gap: 2px; }
.key-name { font-family: var(--mono); font-size: var(--t-sm); color: var(--ink-1); }
.key-sub  { font-family: var(--mono); font-size: var(--t-xs); color: var(--ink-4); }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; }
.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); }
.ghost-btn {
  font-family: var(--mono); font-size: var(--t-xs); letter-spacing: 0.06em;
  padding: 6px 12px; border: 1px solid var(--line-bright); border-radius: 2px;
  color: var(--ink-2); background: transparent;
}
.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); }
.rail-footer { gap: 8px; justify-content: space-between; }

/* ============================================================
   ATTACHMENTS
   ============================================================ */
.composer-attachments {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-bottom: 8px;
}
.composer-attachments[hidden] { display: none; }
.attach-chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--surface-2);
  border: 1px solid var(--line-bright);
  border-radius: 3px;
  padding: 4px 6px 4px 8px;
  font-family: var(--mono);
  font-size: var(--t-xs);
  color: var(--ink-2);
  max-width: 220px;
}
.attach-chip.uploading { opacity: 0.7; }
.attach-chip.error { border-color: rgba(177,109,109,0.4); color: var(--err); }
.attach-chip .ac-name {
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 150px;
}
.attach-chip .ac-x {
  color: var(--ink-4); font-size: 14px; line-height: 1; padding: 0 2px;
}
.attach-chip .ac-x:hover { color: var(--err); }

/* attach button in composer */
#attach-btn { color: var(--ink-3); }
#attach-btn:hover { color: var(--accent); border-color: var(--accent-dim); }

/* attachment chips shown inside a sent user bubble */
.msg-files {
  margin-top: 6px;
  display: flex; flex-wrap: wrap; gap: 6px;
}
.file-chip {
  font-family: var(--mono);
  font-size: var(--t-xs);
  color: var(--ink-3);
  background: var(--surface-1);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 2px 8px;
}

/* drag-to-attach overlay */
body.dragover .stage::after {
  content: "drop image or PDF 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: 0.08em; text-transform: uppercase;
  color: var(--accent);
  background: rgba(212,165,116,0.06);
  border: 2px dashed var(--accent-dim);
  pointer-events: none; z-index: 20;
}