:root {
  --bg: oklch(0.97 0.004 250);
  --surface: oklch(0.995 0.002 250);
  --surface-2: oklch(0.965 0.008 250);
  --ink: oklch(0.22 0.02 250);
  --ink-soft: oklch(0.48 0.02 250);
  --mist: oklch(0.965 0.008 250);
  --paper: oklch(0.97 0.004 250);
  --panel: oklch(0.995 0.002 250);
  --line: oklch(0.88 0.01 250);
  --line-strong: oklch(0.82 0.012 250);
  --accent: oklch(0.47 0.173 355);
  --accent-deep: oklch(0.42 0.17 355);
  --accent-glow: oklch(0.93 0.04 355);
  --accent-ink: oklch(0.99 0.01 355);
  --warn: oklch(0.62 0.14 75);
  --danger: oklch(0.42 0.14 25);
  --ok: oklch(0.55 0.12 155);
  --user-bg: oklch(0.22 0.02 250);
  --user-fg: oklch(0.995 0.002 250);
  --tool: oklch(0.48 0.02 250);
  --radius: 0;
  --radius-sm: 0;
  --font: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --shadow: 0 1px 0 oklch(0.22 0.02 250 / 0.06);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --pad: 20px;
  --tap: 44px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  height: 100%;
  height: 100dvh;
  margin: 0;
  overflow: hidden;
}

body {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.45;
  color: var(--ink);
  background: var(--bg);
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1200px 500px at 10% -10%, oklch(0.94 0.03 355 / 0.55), transparent 60%),
    radial-gradient(900px 420px at 100% 0%, oklch(0.94 0.025 210 / 0.5), transparent 55%),
    var(--bg);
}

.app {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: 100%;
  max-width: 1400px;
  margin: 0 auto;
  overflow: hidden;
  min-height: 0;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px 16px;
  border-right: 1px solid var(--line);
  background: oklch(0.995 0.002 250 / 0.92);
  backdrop-filter: blur(10px);
  min-height: 0;
  overflow: hidden;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 6px 12px;
}

.brand-mark {
  width: 10px;
  height: 10px;
  border-radius: 0;
  background: var(--accent);
  flex-shrink: 0;
  animation: markPulse 1.8s var(--ease) infinite;
  box-shadow: none;
  position: relative;
}

.brand-mark::after {
  display: none;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.brand-sub {
  font-size: 0.72rem;
  color: var(--ink-soft);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.btn-new {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  border-radius: 0;
  padding: 10px 12px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.15s;
}

.btn-new:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-1px);
}

.session-label {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 8px 6px 0;
}

.session-list {
  flex: 1;
  min-height: 0;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.session-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  border-radius: 0;
  padding: 10px;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

.session-item:hover,
.session-item.active {
  background: var(--accent-glow);
}

.session-item .sid {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--tool);
  margin-top: 2px;
}

.session-item .stitle {
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sidebar-foot {
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.account-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.account-btn {
  width: 100%;
  border: 1px solid transparent;
  background: transparent;
  border-radius: 0;
  padding: 8px;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

.account-btn:hover {
  border-color: var(--line);
  background: var(--accent-glow);
}

.account-meta {
  flex: 1;
  min-width: 0;
}

.account-row strong,
.account-row small {
  display: block;
}

.account-row small {
  color: var(--ink-soft);
  font-size: 0.72rem;
  text-transform: capitalize;
}

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
  color: var(--accent-ink);
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.85rem;
}

.avatar-lg {
  width: 88px;
  height: 88px;
  font-size: 1.6rem;
}

.profile-card {
  margin: 18px;
}

.profile-avatar-block {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 8px;
}

.profile-avatar-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.file-btn {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.form-divider {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 18px 0;
}

.modal-sm {
  width: min(100%, 480px);
}

.text-btn {
  border: 0;
  background: transparent;
  color: var(--accent-deep);
  cursor: pointer;
  font: inherit;
  font-size: 0.8rem;
}

.meta-row {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-soft);
  word-break: break-all;
}

.main {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  min-width: 0;
  height: 100%;
  position: relative;
  min-height: 0;
  overflow: hidden;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  height: 56px;
  border-bottom: 1px solid var(--line);
  background: oklch(0.97 0.004 250 / 0.88);
  backdrop-filter: blur(10px);
}

.top-title {
  font-weight: 700;
  letter-spacing: -0.02em;
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.top-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.select-wrap {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

  .select-wrap select {
  font: inherit;
  font-size: 0.82rem;
  text-transform: none;
  letter-spacing: 0;
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 6px 8px;
  background: var(--panel);
  color: var(--ink);
  max-width: 170px;
}

.chat {
  position: relative;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 24px 20px 12px;
  scroll-behavior: auto;
  overscroll-behavior: contain;
  /* Isolate scroll layout so composer/textarea resize doesn't thrash chat paint */
  contain: layout paint;
  min-height: 0;
  height: 100%;
}

.jump-bottom {
  position: absolute;
  right: 28px;
  bottom: 160px;
  z-index: 5;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--panel);
  color: var(--accent-deep);
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.16);
  transition: transform 0.15s, box-shadow 0.15s;
  animation: fadeUp 0.2s ease both;
}

.jump-bottom:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.22);
}

.welcome {
  max-width: 560px;
  margin: 12vh auto 0;
  text-align: center;
  animation: fadeUp 0.5s ease both;
}

.welcome.hidden {
  display: none;
}

.welcome h1 {
  font-family: var(--mono);
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 12px;
  color: var(--accent);
  font-weight: 600;
}

.welcome p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.5;
  max-width: 36ch;
  margin-inline: auto;
}

.messages {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  padding-bottom: 24px;
}

.bubble {
  max-width: 92%;
  animation: fadeUp 0.25s ease both;
}

.bubble.user {
  position: relative;
  align-self: flex-end;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  max-width: min(92%, 36rem);
  width: auto;
  background: transparent;
  padding: 0;
  color: var(--user-fg);
}

.bubble.user .user-text {
  display: inline-block;
  width: max-content;
  max-width: 100%;
  background: var(--user-bg);
  color: var(--user-fg);
  padding: 12px 16px;
  box-shadow: var(--shadow);
  white-space: pre-wrap;
  word-break: break-word;
}

.bubble.user .msg-actions {
  display: flex;
  justify-content: flex-end;
  gap: 4px;
  margin-top: 6px;
  opacity: 0;
  transition: opacity 0.15s var(--ease);
}

.bubble.user:hover .msg-actions,
.bubble.user:focus-within .msg-actions {
  opacity: 1;
}

.msg-copy {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.02em;
  cursor: pointer;
  padding: 2px 4px;
  line-height: 1.2;
  transition: color 0.15s, background 0.15s;
}

.msg-copy:hover {
  color: var(--ink);
  background: var(--mist);
}

@media (hover: none) {
  .bubble.user .msg-actions {
    opacity: 0.7;
  }
}

.bubble.assistant {
  align-self: flex-start;
  width: 100%;
  max-width: 100%;
}

.bubble .who {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-deep);
  font-weight: 600;
  margin-bottom: 6px;
}

.bubble .body {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 14px 16px;
  line-height: 1.65;
  word-break: break-word;
  overflow-wrap: anywhere;
  box-shadow: var(--shadow);
  /* Stable paint box while content grows — reduces top-left flicker */
  min-height: 1.65em;
}

.bubble .body.streaming {
  white-space: pre-wrap;
  font-variant-ligatures: none;
  /* Keep stream text readable without full markdown reflow each token */
  tab-size: 2;
}

.bubble .body:empty::after {
  content: "…";
  color: var(--tool);
}

/* Markdown content */
.bubble .body p {
  margin: 0 0 0.75em;
}

.bubble .body p:last-child {
  margin-bottom: 0;
}

.bubble .body ul,
.bubble .body ol {
  margin: 0 0 0.75em;
  padding-left: 1.35em;
}

.bubble .body li {
  margin: 0.25em 0;
  padding-left: 0.15em;
}

.bubble .body li > ul,
.bubble .body li > ol {
  margin: 0.2em 0 0.35em;
}

.bubble .body code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: var(--mist);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 1px 5px;
}

/* Block code inside .code-block must stay light-on-dark */
.bubble .body .code-block code,
.bubble .body pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: #e2e8f0;
}

.bubble .body blockquote {
  margin: 0 0 10px;
  padding: 6px 12px;
  border-left: 3px solid var(--accent);
  background: var(--mist);
  border-radius: 0;
  color: var(--ink-soft);
}

.bubble .body hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 12px 0;
}

.bubble .body a {
  color: var(--accent-deep);
}

.md-h {
  font-weight: 700;
  margin: 14px 0 8px;
}

.md-h:first-child {
  margin-top: 0;
}

.md-h1 { font-size: 1.25rem; }
.md-h2 { font-size: 1.12rem; }
.md-h3 { font-size: 1rem; }
.md-h4 { font-size: 0.92rem; color: var(--ink-soft); }

.code-block {
  margin: 10px 0;
  border: 1px solid var(--line);
  border-radius: 0;
  overflow: hidden;
  background: #0f172a;
}

.code-block .code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: #94a3b8;
  background: #1e293b;
}

.code-copy {
  appearance: none;
  border: none;
  background: transparent;
  color: #94a3b8;
  font-family: var(--mono);
  font-size: 0.7rem;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 0;
  transition: background 0.15s, color 0.15s;
}

.code-copy:hover {
  background: rgba(148, 163, 184, 0.15);
  color: #e2e8f0;
}

.code-block pre {
  margin: 0;
  padding: 12px 14px;
  overflow: auto;
  max-height: 240px;
  -webkit-overflow-scrolling: touch;
}

.code-block code {
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.55;
  color: #e2e8f0;
  white-space: pre;
  tab-size: 2;
  display: block;
  min-width: min-content;
}

.stopped-note {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  margin-top: 6px;
}

.approval-dock {
  position: relative;
  z-index: 12;
  padding: 0 20px 8px;
  background: linear-gradient(
    to top,
    oklch(0.97 0.004 250 / 0.98),
    oklch(0.97 0.004 250 / 0.92)
  );
  border-top: 1px solid var(--line);
  box-shadow: 0 -8px 24px oklch(0.22 0.02 250 / 0.06);
}

.approval-dock[hidden] {
  display: none !important;
}

.approval-dock .approval-card {
  max-width: 820px;
  margin: 10px auto 0;
}

.approval-card {
  margin: 10px 0;
  border: 1px solid var(--warn);
  background: oklch(0.98 0.02 85);
  padding: 12px;
  /* Keep clear of any overlapping chrome while still in-flow */
  scroll-margin-bottom: 120px;
}

.approval-card.dangerous {
  border-color: var(--danger);
  background: oklch(0.97 0.02 25);
}

.approval-card.approved {
  border-color: var(--ok);
  background: oklch(0.97 0.02 155);
}

.approval-card.denied {
  opacity: 0.72;
}

.approval-card.approval-marker {
  padding: 6px 12px;
}

.approval-card.approval-marker .approval-actions,
.approval-card.approval-marker pre {
  display: none;
}

.approval-card.resolved pre,
.approval-card.resolved .approval-actions {
  display: none;
}

.approval-card.resolved .approval-head {
  margin-bottom: 0;
}

.approval-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  font-size: 0.82rem;
}

.approval-head span {
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.approval-card pre {
  margin: 0 0 10px;
  padding: 10px;
  max-height: 180px;
  overflow: auto;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  font: 0.76rem/1.5 var(--mono);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.approval-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.reasoning {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  background: var(--mist);
  border-left: 3px solid var(--accent);
  padding: 0;
  margin-bottom: 8px;
  border-radius: 0;
  max-height: none;
  overflow: hidden;
}

.reasoning-toggle {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--accent-deep);
  font: inherit;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 8px 12px;
  cursor: pointer;
  width: 100%;
  text-align: left;
}

.reasoning-body {
  display: none;
  white-space: pre-wrap;
  max-height: 160px;
  overflow: auto;
  padding: 0 12px 10px;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.reasoning.open .reasoning-body,
.reasoning.done.open .reasoning-body {
  display: block;
}

/* While streaming, keep thought text collapsed — only the toggle label grows. */
.reasoning:not(.done) .reasoning-body {
  display: none;
}

.agent-phase {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent-deep);
  margin: 0 0 10px;
  padding: 6px 10px;
  border-radius: 0;
  background: var(--accent-glow);
}

.agent-phase[hidden] {
  display: none;
}

.phase-orb {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: phase-pulse 1.1s ease-in-out infinite;
}

.agent-phase[data-phase="working"] .phase-orb {
  background: oklch(0.52 0.09 210);
  animation: phase-spin 0.9s linear infinite;
  border-radius: 0;
}

.agent-phase[data-phase="answering"] .phase-orb {
  animation: phase-pulse 1.6s ease-in-out infinite;
}

.phase-dots {
  display: inline-flex;
  gap: 3px;
}

.phase-dots i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.35;
  animation: dot-bounce 1.2s ease-in-out infinite;
}

.phase-dots i:nth-child(2) { animation-delay: 0.15s; }
.phase-dots i:nth-child(3) { animation-delay: 0.3s; }

@keyframes phase-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.35); opacity: 0.55; }
}

@keyframes phase-spin {
  to { transform: rotate(360deg); }
}

@keyframes dot-bounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.35; }
  40% { transform: translateY(-3px); opacity: 1; }
}

.tool-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--tool);
  background: var(--mist);
  border-radius: 0;
  padding: 4px 10px;
  margin: 0 6px 8px 0;
}

.tool-chip.running {
  color: var(--accent-deep);
  background: var(--accent-glow);
}

.tool-spin {
  width: 8px;
  height: 8px;
  border: 1.5px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: phase-spin 0.7s linear infinite;
}

.composer {
  padding: 8px 20px 16px;
}

.composer-meta {
  max-width: 820px;
  margin: 8px auto 0;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.meta-select {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  color: var(--ink-soft);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 4px 6px 4px 12px;
  max-width: 100%;
}

.meta-select span {
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  flex-shrink: 0;
}

.meta-select select {
  appearance: none;
  border: none;
  background: transparent;
  font: inherit;
  font-size: 0.82rem;
  font-family: var(--mono);
  color: var(--ink);
  padding: 2px 18px 2px 2px;
  max-width: min(42vw, 280px);
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 2px center;
}

.meta-combobox {
  position: relative;
  z-index: 6;
  align-items: stretch;
}

.combobox {
  position: relative;
  min-width: 0;
}

.combobox-native {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  border: 0 !important;
  opacity: 0 !important;
  pointer-events: none !important;
  background-image: none !important;
}

.combobox-trigger {
  appearance: none;
  border: none;
  background: transparent;
  font: inherit;
  font-size: 0.82rem;
  font-family: var(--mono);
  color: var(--ink);
  padding: 2px 18px 2px 2px;
  max-width: min(55vw, 320px);
  min-width: 140px;
  cursor: pointer;
  text-align: left;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 2px center;
}

.combobox-trigger:disabled {
  opacity: 0.55;
  cursor: wait;
}

.combobox-value {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.combobox-panel {
  position: absolute;
  left: 0;
  right: auto;
  bottom: calc(100% + 6px);
  width: min(92vw, 360px);
  max-height: min(50vh, 320px);
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--panel);
  border: 1px solid var(--line-strong);
  box-shadow: 0 -8px 28px oklch(0.22 0.02 250 / 0.12);
  z-index: 20;
}

.combobox-panel[hidden] {
  display: none !important;
}

.combobox-search {
  appearance: none;
  border: none;
  border-bottom: 1px solid var(--line);
  background: var(--mist);
  color: var(--ink);
  font: inherit;
  font-family: var(--mono);
  font-size: 0.82rem;
  padding: 10px 12px;
  outline: none;
  width: 100%;
}

.combobox-search:focus {
  background: var(--panel);
}

.combobox-list {
  list-style: none;
  margin: 0;
  padding: 4px 0;
  overflow: auto;
  max-height: min(40vh, 260px);
}

.combobox-option {
  padding: 8px 12px;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink);
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.combobox-option:hover,
.combobox-option.active {
  background: var(--accent-glow);
  color: var(--accent-deep);
}

.combobox-option.selected {
  font-weight: 600;
}

.combobox-option.selected::before {
  content: "● ";
  color: var(--accent);
}

.combobox-empty {
  padding: 12px;
  font-size: 0.8rem;
  color: var(--ink-soft);
}

.composer-box {
  max-width: 820px;
  margin: 0 auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0;
  box-shadow: var(--shadow);
  padding: 12px 14px 10px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.composer-box.drag-over {
  border-color: var(--accent);
  outline: 2px solid oklch(0.47 0.173 355 / 0.35);
  outline-offset: 1px;
  box-shadow: var(--shadow);
}

.composer-box:focus-within {
  border-color: var(--accent);
  outline: 2px solid oklch(0.47 0.173 355 / 0.35);
  outline-offset: 1px;
  box-shadow: var(--shadow);
}

.attach-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.queue-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  padding: 6px 8px;
  border: 1px solid var(--line);
  background: var(--mist);
  font-size: 0.75rem;
  color: var(--ink-soft);
}

.queue-bar[hidden] {
  display: none !important;
}

.queue-label {
  font-weight: 600;
  color: var(--ink);
  flex-shrink: 0;
}

.queue-items {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  flex: 1;
  min-width: 0;
}

.queue-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  max-width: 220px;
  padding: 2px 6px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.queue-chip > span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.queue-chip button {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  padding: 0 2px;
  font-size: 0.85rem;
  line-height: 1;
}

.queue-chip button:hover {
  color: var(--danger);
}

.queue-clear {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--accent-deep);
  font: inherit;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  padding: 2px 4px;
  flex-shrink: 0;
}

.queue-clear:hover {
  text-decoration: underline;
}

.bubble.user.queued {
  opacity: 0.72;
}

.bubble.user.queued .user-text {
  outline: 1px dashed oklch(0.22 0.02 250 / 0.35);
  outline-offset: 2px;
}

.bubble.user .queue-badge {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 4px;
}

.attach-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.attach-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
  background: var(--mist);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 4px 8px;
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.attach-chip.pending button {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1;
  padding: 0 2px;
}

.composer-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.attach-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 0;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.attach-btn:hover {
  background: var(--mist);
  color: var(--accent-deep);
}

.attach-btn.active {
  background: var(--accent-glow);
  color: var(--accent-deep);
}

.image-gallery {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
}

.gen-image {
  margin: 0;
  max-width: min(100%, 420px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.gen-image a {
  display: block;
  line-height: 0;
}

.gen-image img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--mist);
}

.gen-image figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  border-top: 1px solid var(--line);
}

.btn-download {
  appearance: none;
  display: inline-flex;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-deep);
  text-decoration: none;
  padding: 4px 10px;
  border-radius: 0;
  background: var(--accent-glow);
  border: 1px solid transparent;
}

.btn-download:hover {
  border-color: var(--accent);
}

.img-meta {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-soft);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 55%;
}

#prompt {
  width: 100%;
  border: none;
  outline: none;
  resize: none;
  font: inherit;
  font-size: 1rem;
  line-height: 1.45;
  min-height: 44px;
  max-height: 180px;
  background: transparent;
  color: var(--ink);
  /* Prevent iOS/Safari zoom + caret jump quirks */
  overflow-y: auto;
  field-sizing: content;
}

.composer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 8px;
}

.hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.hint-orb {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: phase-pulse 1.1s ease-in-out infinite;
}

.hint[data-phase="working"] .hint-orb {
  background: oklch(0.52 0.09 210);
  border-radius: 0;
  animation: phase-spin 0.9s linear infinite;
}

.hint[data-phase="answering"] .hint-orb {
  animation: phase-pulse 1.6s ease-in-out infinite;
}

.composer-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-send {
  appearance: none;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
  font: inherit;
  font-weight: 600;
  padding: 8px 16px;
  min-height: 40px;
  border-radius: 0;
  cursor: pointer;
  transition: background 0.16s var(--ease);
}

.btn-stop {
  appearance: none;
  border: 1px solid #fca5a5;
  background: #fef2f2;
  color: #b91c1c;
  font: inherit;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 0;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-stop:hover {
  background: #fee2e2;
}

.btn-stop::before {
  content: "■";
  font-size: 0.7em;
  margin-right: 6px;
}

.btn-primary,
.btn-secondary {
  appearance: none;
  border: 0;
  border-radius: 0;
  padding: 9px 14px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  border: 1px solid var(--accent);
  color: var(--accent-ink);
}

.btn-primary:hover {
  background: var(--accent-deep);
}

.btn-secondary {
  background: var(--mist);
  color: var(--ink);
  border: 1px solid var(--line);
}

.login-screen {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--pad);
  background: transparent;
  animation: fadeUp 0.45s var(--ease) both;
}

.login-card {
  width: min(100%, 400px);
  display: grid;
  gap: 14px;
  padding: 28px 22px 24px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 2px;
}

.login-brand .brand-name {
  font-size: 0.95rem;
}

.login-kicker {
  margin: 8px 0 0;
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.lede {
  margin: 0 0 4px;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.login-logo {
  display: none;
}

.login-card h1 {
  display: none;
}

.login-card > p {
  margin: 0;
  color: var(--ink-soft);
}

.field,
.login-card label,
.settings-card label {
  display: grid;
  gap: 6px;
  margin: 0;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.field input,
.login-card input,
.settings-card input,
.settings-card select {
  width: 100%;
  min-height: var(--tap);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 10px 12px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 400;
  text-transform: none;
  letter-spacing: normal;
  outline: none;
  transition: outline 0.16s var(--ease), border-color 0.16s var(--ease);
}

.field input:focus,
.login-card input:focus,
.settings-card input:focus,
.settings-card select:focus {
  outline: 2px solid oklch(0.47 0.173 355 / 0.35);
  outline-offset: 1px;
  border-color: var(--accent);
}

.login-card .btn-primary {
  width: 100%;
  margin-top: 4px;
  min-height: var(--tap);
}

.form-error {
  min-height: 20px;
  color: var(--danger);
  font-size: 0.82rem;
}

.form-status {
  min-height: 20px;
  margin: 8px 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.form-status.error {
  color: var(--danger);
}

.form-status.success {
  color: var(--accent-deep);
}

.modal-backdrop {
  position: fixed;
  z-index: 80;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(15, 28, 24, 0.48);
  backdrop-filter: blur(4px);
}

.modal {
  width: min(100%, 720px);
  max-height: min(90vh, 760px);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  border-radius: 0;
  background: var(--paper);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.25);
}

.modal-settings {
  width: min(100%, 640px);
}

.modal-head {
  position: sticky;
  z-index: 2;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px 12px;
  border-bottom: none;
  background: var(--paper);
  flex-shrink: 0;
}

.modal-head h2,
.modal-head p,
.settings-card h3,
.settings-card > p {
  margin: 0;
}

.modal-head p,
.settings-card > p {
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.settings-tabs {
  display: flex;
  gap: 4px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
  overflow-x: auto;
}

.settings-tab {
  appearance: none;
  border: none;
  background: transparent;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--ink-soft);
  padding: 10px 14px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s;
}

.settings-tab:hover {
  color: var(--ink);
}

.settings-tab.active {
  color: var(--accent-deep);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.settings-subtabs {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.settings-subtab {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--mist);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink-soft);
  padding: 6px 14px;
  border-radius: 0;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.settings-subtab:hover {
  color: var(--ink);
  border-color: var(--accent);
}

.settings-subtab.active {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent-deep);
  font-weight: 600;
}

.settings-panels {
  overflow: auto;
  padding: 16px 18px 20px;
  flex: 1;
  min-height: 0;
}

.settings-panel[hidden],
.settings-subpanel[hidden] {
  display: none !important;
}

.settings-panel.active {
  display: block;
  animation: fadeUp 0.2s ease both;
}

.settings-grid {
  display: block;
  padding: 0;
}

.settings-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.model-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 10px 0 12px;
  min-height: 28px;
}

.model-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.72rem;
  background: var(--mist);
  border-radius: 0;
  padding: 4px 8px 4px 10px;
}

.model-chip.custom {
  background: var(--accent-glow);
  color: var(--accent-deep);
}

.model-chip button {
  border: 0;
  background: transparent;
  color: var(--danger);
  cursor: pointer;
  font-size: 0.85rem;
  line-height: 1;
  padding: 0 2px;
}

.model-add-form {
  grid-template-columns: 1fr auto;
}

.provider-cfg-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.subhead {
  margin: 0 0 6px;
  font-size: 0.9rem;
}

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

.guide-steps {
  margin: 10px 0 14px;
  padding-left: 18px;
  color: var(--ink-soft);
  font-size: 0.86rem;
  line-height: 1.45;
}

.guide-steps li {
  margin: 4px 0;
}

.form-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.inline-user-form {
  display: grid;
  grid-template-columns: 1fr 1fr 90px auto;
  gap: 7px;
  margin-top: 14px;
}

.inline-user-form input,
.inline-user-form select {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 8px;
  font: inherit;
}

.user-list {
  display: grid;
  gap: 7px;
  margin-top: 10px;
}

.user-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 10px;
  border-radius: 0;
  background: var(--mist);
}

.user-row small {
  display: block;
  color: var(--ink-soft);
}

.btn-danger {
  border: 0;
  background: transparent;
  color: var(--danger);
  cursor: pointer;
}

.btn-send:hover:not(:disabled) {
  background: var(--accent-deep);
}

.btn-send:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.icon-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 0;
  width: 36px;
  height: 36px;
  cursor: pointer;
}

.mobile-only {
  display: none;
}

.error-banner {
  color: var(--danger);
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 0;
  padding: 10px 12px;
  font-size: 0.9rem;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Bubble entrance only once — never re-run on stream updates */
.bubble {
  animation-fill-mode: both;
}

@media (prefers-reduced-motion: reduce) {
  .bubble,
  .welcome,
  .jump-bottom,
  .phase-orb,
  .phase-dots i,
  .hint-orb,
  .tool-spin,
  .brand-mark {
    animation: none !important;
  }
}

@keyframes markPulse {
  0% { box-shadow: 0 0 0 0 oklch(0.47 0.173 355 / 0.35); }
  70% { box-shadow: 0 0 0 8px oklch(0.47 0.173 355 / 0); }
  100% { box-shadow: 0 0 0 0 oklch(0.47 0.173 355 / 0); }
}

.sidebar-close {
  margin-left: auto;
}

.sidebar-backdrop {
  display: none;
}

@media (max-width: 860px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(86vw, 300px);
    z-index: 20;
    transform: translateX(-105%);
    transition: transform 0.22s ease;
    box-shadow: var(--shadow);
    background: var(--panel);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 15;
    background: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(2px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s ease;
  }

  .sidebar-backdrop.show {
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-only {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .top-controls {
    gap: 4px;
  }

  .meta-select select {
    max-width: min(55vw, 220px);
  }

  .inline-user-form {
    grid-template-columns: 1fr;
  }
}