:root {
  color-scheme: light dark;
  --bg: #f7f7f5;
  --surface: #ffffff;
  --surface-raised: #ffffff;
  --surface-soft: #f1f1ee;
  --surface-hover: #ecece8;
  --sidebar: #efefeb;
  --threads: #f8f8f6;
  --line: #ddddda;
  --line-strong: #cececa;
  --text: #242522;
  --text-soft: #565852;
  --muted: #82847d;
  --faint: #aaaca5;
  --accent: #167956;
  --accent-strong: #0d6043;
  --accent-soft: #e1f1e9;
  --accent-line: #b9ddcc;
  --danger: #b63a3a;
  --danger-soft: #fbe8e7;
  --warning: #9b651d;
  --warning-soft: #fff3d7;
  --warning-line: #ebcd8a;
  --shadow: 0 18px 50px rgba(41, 43, 38, .11);
  --shadow-soft: 0 8px 24px rgba(41, 43, 38, .07);
  --topbar-height: 58px;
  --mobile-nav-height: 64px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171817;
    --surface: #1e1f1e;
    --surface-raised: #242624;
    --surface-soft: #292b29;
    --surface-hover: #30322f;
    --sidebar: #1b1c1b;
    --threads: #202120;
    --line: #353735;
    --line-strong: #464944;
    --text: #eeeeea;
    --text-soft: #c1c3bd;
    --muted: #94978f;
    --faint: #6e716b;
    --accent: #7ac9a8;
    --accent-strong: #a0dcc2;
    --accent-soft: #223c31;
    --accent-line: #35644f;
    --danger: #f08a87;
    --danger-soft: #442827;
    --warning: #e3b361;
    --warning-soft: #3b301f;
    --warning-line: #695027;
    --shadow: 0 22px 68px rgba(0, 0, 0, .38);
    --shadow-soft: 0 8px 24px rgba(0, 0, 0, .2);
  }
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f7f7f5;
  --surface: #ffffff;
  --surface-raised: #ffffff;
  --surface-soft: #f1f1ee;
  --surface-hover: #ecece8;
  --sidebar: #efefeb;
  --threads: #f8f8f6;
  --line: #ddddda;
  --line-strong: #cececa;
  --text: #242522;
  --text-soft: #565852;
  --muted: #82847d;
  --faint: #aaaca5;
  --accent: #167956;
  --accent-strong: #0d6043;
  --accent-soft: #e1f1e9;
  --accent-line: #b9ddcc;
  --danger: #b63a3a;
  --danger-soft: #fbe8e7;
  --warning: #9b651d;
  --warning-soft: #fff3d7;
  --warning-line: #ebcd8a;
  --shadow: 0 18px 50px rgba(41, 43, 38, .11);
  --shadow-soft: 0 8px 24px rgba(41, 43, 38, .07);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #171817;
  --surface: #1e1f1e;
  --surface-raised: #242624;
  --surface-soft: #292b29;
  --surface-hover: #30322f;
  --sidebar: #1b1c1b;
  --threads: #202120;
  --line: #353735;
  --line-strong: #464944;
  --text: #eeeeea;
  --text-soft: #c1c3bd;
  --muted: #94978f;
  --faint: #6e716b;
  --accent: #7ac9a8;
  --accent-strong: #a0dcc2;
  --accent-soft: #223c31;
  --accent-line: #35644f;
  --danger: #f08a87;
  --danger-soft: #442827;
  --warning: #e3b361;
  --warning-soft: #3b301f;
  --warning-line: #695027;
  --shadow: 0 22px 68px rgba(0, 0, 0, .38);
  --shadow-soft: 0 8px 24px rgba(0, 0, 0, .2);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body { background: var(--bg); color: var(--text); overflow: hidden; }
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { border: 0; color: inherit; }
button:not(:disabled) { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .48; }
[hidden] { display: none !important; }
::selection { color: var(--text); background: var(--accent-line); }

.sr-only {
  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;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Login */
.login-shell {
  position: relative;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 32px 20px;
  overflow: auto;
  isolation: isolate;
  background:
    linear-gradient(115deg, color-mix(in srgb, var(--accent-soft) 40%, transparent), transparent 38%),
    var(--bg);
}

.login-ambient {
  position: fixed;
  z-index: -1;
  inset: 0;
  opacity: .38;
  pointer-events: none;
  background-image:
    linear-gradient(color-mix(in srgb, var(--line) 38%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--line) 38%, transparent) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at center, black, transparent 73%);
}

.login-card {
  width: min(470px, 100%);
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.login-brand { display: flex; align-items: center; gap: 15px; }
.eyebrow, .pane-kicker {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .15em;
  line-height: 1.3;
}
.login-card h1 { margin: 0; font-size: 30px; letter-spacing: -.045em; line-height: 1; }
.login-intro { margin: 22px 0; color: var(--text-soft); font-size: 14px; line-height: 1.65; }

.brand-mark {
  position: relative;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--line));
  border-radius: 15px;
  background: var(--accent-soft);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .2);
}
.brand-mark::before {
  content: "";
  width: 18px;
  height: 18px;
  border: 2px solid var(--accent);
  border-radius: 5px;
  transform: rotate(45deg);
}
.brand-mark span { position: absolute; width: 4px; height: 4px; border-radius: 50%; background: var(--accent); }
.brand-mark span:nth-child(1) { top: 9px; left: 9px; }
.brand-mark span:nth-child(2) { right: 8px; bottom: 10px; }
.brand-mark span:nth-child(3) { left: 11px; bottom: 8px; opacity: .55; }
.brand-mark.small { width: 34px; height: 34px; border-radius: 10px; }
.brand-mark.small::before { width: 12px; height: 12px; }
.brand-mark.small span { width: 3px; height: 3px; }
.brand-mark.small span:nth-child(1) { top: 6px; left: 6px; }
.brand-mark.small span:nth-child(2) { right: 5px; bottom: 7px; }
.brand-mark.small span:nth-child(3) { left: 8px; bottom: 5px; }

.route-picker { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin-bottom: 23px; }
.route-picker a {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--muted);
  background: var(--surface-soft);
  text-decoration: none;
  transition: border-color .16s, background .16s, transform .16s;
}
.route-picker a:hover { border-color: var(--line-strong); transform: translateY(-1px); }
.route-picker a.active { border-color: var(--accent-line); color: var(--text); background: var(--accent-soft); }
.route-icon { width: 27px; height: 27px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 8px; background: var(--surface); font-weight: 700; }
.route-picker strong, .route-picker small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.route-picker strong { font-size: 13px; }
.route-picker small { margin-top: 2px; color: var(--muted); font-size: 10px; }

.login-form > label { display: block; margin: 13px 0 7px; color: var(--text-soft); font-size: 12px; font-weight: 650; }
.field-shell input {
  width: 100%;
  height: 44px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 11px;
  outline: none;
  color: var(--text);
  background: var(--surface-soft);
  transition: border-color .16s, box-shadow .16s, background .16s;
}
.field-shell input:focus { border-color: var(--accent); background: var(--surface); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent); }
.primary { color: #fff; background: var(--accent-strong); font-weight: 700; }
.login-submit { width: 100%; min-height: 44px; display: flex; align-items: center; justify-content: space-between; margin-top: 20px; padding: 0 15px; border-radius: 11px; }
.login-submit:not(:disabled):hover { filter: brightness(1.08); }
.login-feedback { min-height: 24px; display: flex; align-items: center; gap: 8px; margin-top: 13px; }
.login-status, .error { margin: 0; font-size: 12px; line-height: 1.5; }
.login-status { color: var(--muted); }
.error { min-height: 18px; color: var(--danger); }
.security-note { display: flex; align-items: center; gap: 7px; margin: 18px 0 0; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }

/* Shared controls */
.icon-button, .ghost, .new-thread-button, .danger, .send-button, .load-more {
  border-radius: 9px;
  transition: color .15s, background .15s, border-color .15s, transform .15s;
}
.icon-button { min-width: 34px; min-height: 34px; padding: 6px; display: grid; place-items: center; color: var(--muted); background: transparent; font-size: 18px; }
.icon-button:not(:disabled):hover, .ghost:not(:disabled):hover { color: var(--text); background: var(--surface-hover); }
.ghost { min-height: 32px; padding: 0 10px; color: var(--muted); background: transparent; font-size: 12px; }
kbd { padding: 2px 5px; border: 1px solid var(--line-strong); border-bottom-width: 2px; border-radius: 5px; color: var(--muted); background: var(--surface); font-family: inherit; font-size: 10px; line-height: 1.2; }

.status-dot { width: 7px; height: 7px; flex: 0 0 auto; border-radius: 50%; background: var(--faint); box-shadow: 0 0 0 3px color-mix(in srgb, var(--faint) 14%, transparent); }
.status-dot.online { background: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 15%, transparent); }
.status-dot.offline { background: var(--danger); box-shadow: 0 0 0 3px color-mix(in srgb, var(--danger) 14%, transparent); }
.status-dot.connecting { background: var(--warning); box-shadow: 0 0 0 3px color-mix(in srgb, var(--warning) 16%, transparent); animation: pulse 1.45s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .45; } }

/* Desktop shell */
.app-shell {
  width: 100vw;
  height: 100dvh;
  display: grid;
  grid-template-columns: minmax(205px, 244px) minmax(270px, 330px) minmax(0, 1fr);
  grid-template-rows: var(--topbar-height) minmax(0, 1fr);
  overflow: hidden;
  background: var(--bg);
}
.topbar {
  z-index: 20;
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(190px, 244px) minmax(0, 1fr) auto;
  align-items: center;
  min-width: 0;
  padding: 0 14px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 93%, transparent);
  backdrop-filter: blur(18px);
}
.brand { min-width: 0; display: flex; align-items: center; gap: 10px; }
.brand-copy { min-width: 0; }
.brand-copy strong, .brand-copy small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.brand-copy strong { font-size: 13px; letter-spacing: -.01em; }
.brand-copy small { margin-top: 1px; color: var(--muted); font-size: 9px; letter-spacing: .05em; text-transform: uppercase; }
.topbar-context { min-width: 0; padding: 0 24px; text-align: center; }
.topbar-context strong, .topbar-context span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar-context strong { font-size: 12px; font-weight: 650; }
.topbar-context span { margin-top: 1px; color: var(--muted); font-size: 10px; }
.topbar-actions { display: flex; align-items: center; justify-content: flex-end; gap: 7px; }
.badge, .status { min-height: 28px; display: inline-flex; align-items: center; gap: 7px; padding: 0 9px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: var(--surface-soft); font-size: 10px; white-space: nowrap; }
.status.online { border-color: var(--accent-line); color: var(--accent-strong); background: var(--accent-soft); }
.status.offline { border-color: color-mix(in srgb, var(--danger) 30%, var(--line)); color: var(--danger); }
.theme-button { font-size: 15px; }

.workspace-rail, .threads-pane, .conversation { min-width: 0; min-height: 0; }
.workspace-rail { display: flex; flex-direction: column; overflow: hidden; border-right: 1px solid var(--line); background: var(--sidebar); }
.threads-pane { display: flex; flex-direction: column; overflow: hidden; border-right: 1px solid var(--line); background: var(--threads); }
.conversation { display: grid; grid-template-rows: auto minmax(0, 1fr) auto auto; position: relative; overflow: hidden; background: var(--surface); }

.pane-heading { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 14px 14px 12px; }
.pane-heading h2 { margin: 0; font-size: 18px; line-height: 1.15; letter-spacing: -.03em; }
.rail-heading { border-bottom: 1px solid color-mix(in srgb, var(--line) 65%, transparent); }
.nav-section { padding: 14px 10px 0; }
.projects-section { min-height: 0; display: flex; flex-direction: column; flex: 1; }
.nav-label-row { min-height: 24px; display: flex; align-items: center; justify-content: space-between; padding: 0 7px; }
.nav-label { color: var(--muted); font-size: 10px; font-weight: 750; letter-spacing: .1em; text-transform: uppercase; }
.count-badge { min-width: 20px; height: 18px; padding: 0 6px; display: inline-grid; place-items: center; border-radius: 999px; color: var(--muted); background: color-mix(in srgb, var(--surface) 74%, transparent); font-size: 9px; }
.device-list, .project-list { display: grid; gap: 3px; }
.project-list { min-height: 0; overflow: auto; padding-bottom: 10px; scrollbar-width: thin; }
.nav-item {
  width: 100%;
  min-width: 0;
  min-height: 45px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 8px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--text-soft);
  background: transparent;
  text-align: left;
}
.nav-item:not(:disabled):hover { color: var(--text); background: color-mix(in srgb, var(--surface) 65%, transparent); }
.nav-item.active { border-color: var(--line); color: var(--text); background: var(--surface); box-shadow: 0 1px 2px rgba(0, 0, 0, .04); }
.nav-item.offline { opacity: .68; }
.nav-item-icon { width: 29px; height: 29px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 8px; color: var(--muted); background: var(--surface-soft); font-family: var(--mono); font-size: 12px; font-weight: 700; }
.nav-item.active .nav-item-icon { color: var(--accent-strong); background: var(--accent-soft); }
.nav-item-copy { min-width: 0; flex: 1; }
.nav-item-copy strong, .nav-item-copy small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-item-copy strong { font-size: 12px; font-weight: 650; }
.nav-item-copy small { margin-top: 3px; color: var(--muted); font-size: 9px; }
.nav-item-status { width: 6px; height: 6px; flex: 0 0 auto; border-radius: 50%; background: var(--faint); }
.nav-item-status.online { background: var(--accent); }
.all-tasks { margin: 2px 0 4px; }
.compact-select-label, .compact-select { display: none; }
.rail-footer { display: flex; align-items: center; gap: 9px; margin: 10px; padding: 10px; border-top: 1px solid var(--line); color: var(--muted); }
.shield-icon { width: 25px; height: 25px; display: grid; place-items: center; flex: 0 0 auto; border: 1px solid var(--line); border-radius: 8px; font-size: 11px; }
.rail-footer p { min-width: 0; margin: 0; }
.rail-footer strong, .rail-footer span { display: block; }
.rail-footer strong { color: var(--text-soft); font-size: 10px; }
.rail-footer span { margin-top: 2px; font-size: 9px; }

.thread-pane-heading { padding-inline: 16px 12px; }
.new-thread-button { min-height: 33px; display: flex; align-items: center; gap: 5px; padding: 0 10px; color: #fff; background: var(--accent-strong); font-size: 11px; font-weight: 700; }
.new-thread-button:not(:disabled):hover { filter: brightness(1.08); transform: translateY(-1px); }
.thread-tools { display: grid; grid-template-columns: minmax(0, 1fr) 82px 95px; gap: 7px; padding: 0 12px 10px; }
.search-box { min-width: 0; height: 35px; display: flex; align-items: center; gap: 7px; padding: 0 9px; border: 1px solid var(--line); border-radius: 9px; color: var(--muted); background: var(--surface); }
.search-box:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 12%, transparent); }
.search-box > span { font-size: 17px; transform: translateY(-1px); }
.search-box input { min-width: 0; width: 100%; border: 0; outline: 0; color: var(--text); background: transparent; font-size: 11px; }
.search-box input::placeholder { color: var(--faint); }
.search-box kbd { margin-left: auto; }
.filter-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }
.thread-filter { width: 100%; height: 35px; padding: 0 8px; border: 1px solid var(--line); border-radius: 9px; outline: none; color: var(--text-soft); background: var(--surface); font-size: 10px; }
.thread-filter:focus { border-color: var(--accent); }
.thread-summary { min-height: 27px; padding: 3px 16px 8px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 10px; }
.thread-list { min-height: 0; flex: 1; overflow-y: auto; overflow-x: hidden; padding: 7px 8px 12px; scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.thread-group-label { padding: 9px 8px 5px; color: var(--muted); font-size: 9px; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.thread-item {
  position: relative;
  width: 100%;
  min-width: 0;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 9px;
  margin: 1px 0;
  padding: 9px 8px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--text-soft);
  background: transparent;
  text-align: left;
}
.thread-item:not(:disabled):hover { color: var(--text); background: var(--surface-hover); }
.thread-item.active { border-color: var(--accent-line); color: var(--text); background: var(--accent-soft); }
.thread-icon { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 9px; color: var(--muted); background: var(--surface-soft); font-family: var(--mono); font-size: 11px; }
.thread-item.active .thread-icon { color: var(--accent-strong); background: var(--surface); }
.thread-copy { min-width: 0; }
.thread-title { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; font-weight: 650; line-height: 1.35; }
.thread-meta { min-width: 0; display: flex; align-items: center; gap: 5px; margin-top: 4px; color: var(--muted); font-size: 9px; }
.thread-meta span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.thread-meta span:first-child { flex: 1; }
.thread-meta time { flex: 0 0 auto; }
.thread-empty { padding: 34px 18px; color: var(--muted); text-align: center; }
.thread-empty strong, .thread-empty span { display: block; }
.thread-empty strong { color: var(--text-soft); font-size: 12px; }
.thread-empty span { margin-top: 6px; font-size: 10px; line-height: 1.5; }
.thread-skeleton { height: 53px; margin: 3px 0; border-radius: 10px; background: linear-gradient(90deg, var(--surface-soft), var(--surface), var(--surface-soft)); background-size: 220% 100%; animation: loading 1.4s linear infinite; }
@keyframes loading { to { background-position: -220% 0; } }
.load-more { margin: 0 12px 12px; min-height: 34px; border: 1px solid var(--line); color: var(--text-soft); background: var(--surface); font-size: 10px; }
.load-more:not(:disabled):hover { border-color: var(--line-strong); background: var(--surface-hover); }

/* Conversation */
.conversation-header { min-height: 67px; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 10px clamp(18px, 3vw, 36px); border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 94%, transparent); }
.conversation-title-wrap { min-width: 0; display: flex; align-items: center; gap: 6px; }
.conversation-title-wrap > div { min-width: 0; }
.conversation-header h2, .conversation-header p { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conversation-header h2 { max-width: min(54vw, 700px); margin: 0; font-size: 14px; font-weight: 680; letter-spacing: -.015em; }
.conversation-header p { margin: 3px 0 0; color: var(--muted); font-size: 10px; }
.mobile-back { display: none; font-size: 28px; }
.conversation-controls { min-width: 0; display: flex; align-items: center; justify-content: flex-end; gap: 7px; }
.thread-owner-details { position: relative; }
.thread-owner-details summary { min-height: 29px; display: inline-flex; align-items: center; padding: 0 9px; border: 1px solid var(--line); border-radius: 9px; color: var(--muted); background: var(--surface-soft); font-size: 9px; font-weight: 700; white-space: nowrap; list-style: none; cursor: pointer; }
.thread-owner-details summary::-webkit-details-marker { display: none; }
.thread-owner-details[open] summary, .thread-owner-details[data-tone="current"] summary { border-color: var(--accent-line); color: var(--accent-strong); background: var(--accent-soft); }
.thread-owner-details[data-tone="other"] summary, .thread-owner-details[data-tone="external"] summary { border-color: color-mix(in srgb, var(--danger) 35%, var(--line)); color: var(--danger); background: var(--danger-soft); }
.thread-owner-popover { position: absolute; z-index: 30; top: calc(100% + 9px); right: 0; width: min(330px, calc(100vw - 28px)); padding: 15px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); box-shadow: 0 18px 52px color-mix(in srgb, #000 22%, transparent); }
.thread-owner-heading { display: grid; gap: 4px; }
.thread-owner-heading strong { font-size: 13px; }
.thread-owner-popover > p { margin: 10px 0; color: var(--muted); font-size: 10px; line-height: 1.55; }
.thread-owner-facts { display: grid; gap: 6px; margin: 12px 0; }
.thread-owner-facts div { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 7px 9px; border-radius: 8px; background: var(--surface-soft); }
.thread-owner-facts dt { color: var(--muted); font-size: 9px; }
.thread-owner-facts dd { margin: 0; color: var(--text-soft); font: 650 9px var(--mono); text-align: right; }
.thread-release-button { width: 100%; min-height: 34px; border: 1px solid var(--accent-line); border-radius: 9px; color: var(--accent-strong); background: var(--accent-soft); font-size: 10px; font-weight: 700; }
.thread-release-button:not(:disabled):hover { border-color: var(--accent); }
.thread-owner-help { margin-bottom: 0 !important; font-size: 9px !important; }
.detail-level-control { min-height: 29px; display: inline-flex; align-items: center; gap: 5px; padding: 0 7px; border: 1px solid var(--line); border-radius: 9px; color: var(--muted); background: var(--surface-soft); font-size: 9px; white-space: nowrap; }
.detail-level-control select { min-width: 48px; border: 0; outline: 0; color: var(--text-soft); background: transparent; font: 650 9px var(--mono); cursor: pointer; }
.hidden-details-button { min-height: 29px; padding: 0 9px; border: 1px solid var(--accent-line); border-radius: 9px; color: var(--accent-strong); background: var(--accent-soft); font-size: 9px; font-weight: 700; white-space: nowrap; }
.hidden-details-button:hover { border-color: var(--accent); }
.turn-state { min-height: 29px; display: inline-flex; align-items: center; gap: 7px; padding: 0 9px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: var(--surface-soft); font-size: 10px; white-space: nowrap; }
.turn-state i { width: 6px; height: 6px; border-radius: 50%; background: var(--faint); }
.turn-state.running { border-color: var(--accent-line); color: var(--accent-strong); background: var(--accent-soft); }
.turn-state.running i { background: var(--accent); animation: pulse 1.1s ease-in-out infinite; }
.turn-state.error { border-color: color-mix(in srgb, var(--danger) 35%, var(--line)); color: var(--danger); background: var(--danger-soft); }
.turn-state.error i { background: var(--danger); }
.turn-state.archived { border-color: var(--warning-line); color: var(--warning); background: var(--warning-soft); }
.turn-state.archived i { background: var(--warning); }

.empty-state { grid-row: 2; align-self: center; justify-self: center; max-width: 520px; padding: 40px 28px; text-align: center; }
.empty-illustration { position: relative; width: 96px; height: 96px; display: grid; place-items: center; margin: 0 auto 22px; }
.empty-illustration .orbit { position: absolute; inset: 9px; border: 1px solid var(--line-strong); border-radius: 22px; transform: rotate(45deg); }
.empty-illustration .orbit.two { inset: 18px; border-color: var(--accent-line); transform: rotate(17deg); }
.empty-illustration .core { z-index: 1; color: var(--accent-strong); font-family: var(--mono); font-size: 23px; font-weight: 700; }
.empty-state h2 { margin: 8px 0; font-size: clamp(21px, 2.4vw, 28px); letter-spacing: -.045em; }
.empty-state > p:not(.pane-kicker) { margin: 0 auto; color: var(--muted); font-size: 12px; line-height: 1.7; }
.empty-shortcuts { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px; margin-top: 22px; color: var(--muted); font-size: 10px; }

.messages { grid-row: 2; min-height: 0; overflow-y: auto; overflow-x: hidden; padding: 30px max(22px, calc((100% - 860px) / 2)) 36px; scroll-behavior: smooth; scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.messages.history-static { scroll-behavior: auto; overflow-anchor: none; }
.history-loading { min-height: 180px; display: flex; align-items: center; justify-content: center; gap: 10px; color: var(--muted); font-size: 11px; }
.history-loading-spinner { width: 14px; height: 14px; border: 2px solid var(--line-strong); border-top-color: var(--accent); border-radius: 50%; animation: history-spin .75s linear infinite; }
@keyframes history-spin { to { transform: rotate(360deg); } }
.message { max-width: 820px; margin: 0 auto 24px; }
.message-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 7px; }
.message-identity { display: flex; align-items: center; gap: 7px; color: var(--text-soft); font-size: 10px; font-weight: 720; }
.message-avatar { width: 22px; height: 22px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 7px; color: var(--muted); background: var(--surface-soft); font-family: var(--mono); font-size: 9px; }
.message.user .message-avatar { border-color: var(--accent-line); color: var(--accent-strong); background: var(--accent-soft); }
.message-time { color: var(--faint); font-size: 9px; }
.message .content { color: var(--text); font-size: 13px; line-height: 1.7; overflow-wrap: anywhere; }
.message.user .content { padding: 13px 15px; border: 1px solid var(--accent-line); border-radius: 14px 14px 4px 14px; background: var(--accent-soft); }
.message.agent .content { padding: 2px 0; }
.message .content.streaming { white-space: pre-wrap; }
.message .content.streaming::after { content: ""; display: inline-block; width: 6px; height: 14px; margin-left: 3px; vertical-align: -2px; border-radius: 1px; background: var(--accent); animation: pulse .8s ease-in-out infinite; }
.rich-text { min-width: 0; }
.rich-text > :first-child { margin-top: 0; }
.rich-text > :last-child { margin-bottom: 0; }
.rich-text p { margin: 0 0 11px; white-space: pre-wrap; }
.rich-text h1, .rich-text h2, .rich-text h3, .rich-text h4, .rich-text h5, .rich-text h6 { margin: 20px 0 8px; line-height: 1.35; letter-spacing: -.025em; }
.rich-text h1 { font-size: 20px; }
.rich-text h2 { padding-bottom: 5px; border-bottom: 1px solid var(--line); font-size: 17px; }
.rich-text h3 { font-size: 15px; }
.rich-text h4, .rich-text h5, .rich-text h6 { font-size: 13px; }
.rich-text ul, .rich-text ol { margin: 7px 0 12px; padding-left: 23px; }
.rich-text ul ul, .rich-text ul ol, .rich-text ol ul, .rich-text ol ol { margin: 4px 0; }
.rich-text li { margin: 4px 0; padding-left: 2px; }
.rich-text li::marker { color: var(--muted); }
.rich-text li.task-list-item { list-style: none; margin-left: -20px; }
.rich-text .contains-task-list { padding-left: 20px; }
.rich-text input[type="checkbox"] { width: 14px; height: 14px; margin: 0 7px 0 0; vertical-align: -2px; accent-color: var(--accent); opacity: 1; }
.rich-text a { color: var(--accent-strong); text-decoration-color: color-mix(in srgb, var(--accent) 44%, transparent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.rich-text a:hover { text-decoration-color: currentColor; }
.rich-text .unsafe-link { color: var(--muted); text-decoration: line-through; text-decoration-color: var(--line-strong); }
.rich-text blockquote { margin: 13px 0; padding: 8px 14px; border-left: 3px solid var(--accent-line); color: var(--text-soft); background: color-mix(in srgb, var(--accent-soft) 48%, transparent); border-radius: 0 8px 8px 0; }
.rich-text blockquote > :last-child { margin-bottom: 0; }
.rich-text hr { height: 1px; margin: 20px 0; border: 0; background: var(--line); }
.rich-text del { color: var(--muted); }
.rich-table-wrap { max-width: 100%; margin: 13px 0; overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
.rich-table-wrap table { width: 100%; min-width: 360px; border-collapse: collapse; font-size: 11px; line-height: 1.55; }
.rich-table-wrap th, .rich-table-wrap td { padding: 8px 10px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.rich-table-wrap th:last-child, .rich-table-wrap td:last-child { border-right: 0; }
.rich-table-wrap tr:last-child td { border-bottom: 0; }
.rich-table-wrap th { color: var(--text-soft); background: var(--surface-soft); font-size: 10px; font-weight: 720; }
.rich-table-wrap tbody tr:nth-child(even) { background: color-mix(in srgb, var(--surface-soft) 48%, transparent); }
.rich-text code:not(.code-block code) { padding: 2px 5px; border: 1px solid var(--line); border-radius: 5px; color: var(--text-soft); background: var(--surface-soft); font-family: var(--mono); font-size: .9em; }
.code-block { position: relative; margin: 12px 0; overflow: hidden; border: 1px solid var(--line); border-radius: 11px; background: var(--surface-soft); }
.code-toolbar { min-height: 31px; display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 4px 6px 4px 11px; border-bottom: 1px solid var(--line); }
.code-language { display: block; color: var(--muted); font-family: var(--mono); font-size: 9px; text-transform: lowercase; }
.code-copy { min-width: 48px; padding: 4px 7px; border: 1px solid transparent; border-radius: 6px; color: var(--muted); background: transparent; font-family: var(--mono); font-size: 9px; }
.code-copy:hover { border-color: var(--line); color: var(--text-soft); background: var(--surface-hover); }
.code-copy:focus-visible { outline: 2px solid var(--accent-line); outline-offset: 1px; }
.code-block pre { margin: 0; padding: 12px; overflow: auto; tab-size: 2; }
.code-block code { display: block; min-width: max-content; color: var(--text-soft); font-family: var(--mono); font-size: 11px; line-height: 1.6; white-space: pre; }
.hljs-comment, .hljs-quote { color: var(--muted); font-style: italic; }
.hljs-keyword, .hljs-selector-tag, .hljs-literal, .hljs-section, .hljs-link { color: var(--danger); }
.hljs-string, .hljs-title, .hljs-name, .hljs-type, .hljs-attribute, .hljs-symbol, .hljs-bullet, .hljs-addition { color: var(--accent-strong); }
.hljs-number, .hljs-meta, .hljs-built_in, .hljs-builtin-name, .hljs-params { color: var(--warning); }
.hljs-variable, .hljs-template-variable, .hljs-selector-id, .hljs-selector-class { color: color-mix(in srgb, var(--accent-strong) 70%, var(--text)); }
.hljs-deletion { color: var(--danger); background: color-mix(in srgb, var(--danger-soft) 62%, transparent); }
.hljs-addition { background: color-mix(in srgb, var(--accent-soft) 62%, transparent); }
.message.activity { margin-top: -5px; margin-bottom: 14px; }
.message.activity .content { padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; color: var(--muted); background: var(--surface-soft); font-family: var(--mono); font-size: 10px; line-height: 1.55; white-space: pre-wrap; }
.activity-card { overflow: hidden; }
.activity-card > summary { cursor: pointer; list-style: none; }
.activity-card > summary::-webkit-details-marker { display: none; }
.activity-card > summary:focus-visible { outline: 2px solid var(--accent-line); outline-offset: 3px; border-radius: 4px; }
.activity-label { display: flex; align-items: center; gap: 6px; margin-bottom: 5px; color: var(--text-soft); font-family: inherit; font-size: 9px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.activity-label::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--muted); }
.activity-preview { min-width: 0; margin-left: auto; overflow: hidden; color: var(--muted); font-weight: 500; letter-spacing: 0; text-overflow: ellipsis; text-transform: none; white-space: nowrap; }
.activity-card[open] .activity-preview { display: none; }
.activity-card:not([open]) .activity-label { margin-bottom: 0; }
.activity-card:not([open]) .activity-body { display: none; }
.app-shell[data-detail-level="concise"] .message.activity:not(.detail-critical) { display: none; }
.message.activity.detail-critical .content { border-color: color-mix(in srgb, var(--danger) 35%, var(--line)); color: var(--danger); background: var(--danger-soft); }
.message.activity.detail-critical .activity-label { color: var(--danger); }
.message.activity.detail-critical .activity-label::before { background: var(--danger); }
.tool-message { margin-top: 0; }
.tool-card { overflow: hidden; border: 1px solid var(--line); border-radius: 11px; background: color-mix(in srgb, var(--surface-soft) 78%, transparent); }
.tool-card[open] { background: var(--surface-soft); }
.tool-summary { min-height: 48px; display: grid; grid-template-columns: 28px minmax(0, 1fr) auto 14px; align-items: center; gap: 9px; padding: 8px 10px; list-style: none; cursor: pointer; }
.tool-summary::-webkit-details-marker { display: none; }
.tool-summary:focus-visible { outline: 2px solid var(--accent-line); outline-offset: -2px; }
.tool-icon { width: 28px; height: 28px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); background: var(--surface); font-family: var(--mono); font-size: 10px; font-weight: 700; }
.tool-summary-copy { min-width: 0; display: grid; gap: 1px; }
.tool-summary-copy strong, .tool-summary-copy small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tool-summary-copy strong { color: var(--text-soft); font-family: var(--mono); font-size: 10px; font-weight: 650; }
.tool-summary-copy small { color: var(--muted); font-size: 9px; }
.tool-status { padding: 3px 7px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: var(--surface); font-size: 8px; font-weight: 700; }
.tool-status.running { border-color: var(--warning-line); color: var(--warning); background: var(--warning-soft); }
.tool-status.success { border-color: var(--accent-line); color: var(--accent-strong); background: var(--accent-soft); }
.tool-status.error { border-color: color-mix(in srgb, var(--danger) 42%, var(--line)); color: var(--danger); background: var(--danger-soft); }
.tool-chevron { color: var(--muted); font-size: 16px; line-height: 1; transform: rotate(0deg); transition: transform .16s; }
.tool-card[open] .tool-chevron { transform: rotate(90deg); }
.tool-body { display: grid; gap: 11px; padding: 12px; border-top: 1px solid var(--line); }
.tool-body .code-block { margin: 0; background: var(--surface); }
.tool-section { min-width: 0; }
.tool-section h4 { margin: 0 0 6px; color: var(--muted); font-size: 9px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; }
.tool-meta { display: flex; flex-wrap: wrap; gap: 5px 14px; margin: 0; }
.tool-meta div { display: contents; }
.tool-meta dt { color: var(--muted); font-size: 9px; }
.tool-meta dd { margin: 0 8px 0 -8px; color: var(--text-soft); font-family: var(--mono); font-size: 9px; }
.tool-file-list { display: grid; gap: 8px; }
.tool-file-entry { overflow: hidden; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); }
.tool-file-entry > .code-block { margin: 0; border: 0; border-top: 1px solid var(--line); border-radius: 0; }
.tool-file-heading { min-height: 34px; display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 7px 9px; }
.tool-file-heading code { min-width: 0; overflow: hidden; color: var(--text-soft); font-family: var(--mono); font-size: 9px; text-overflow: ellipsis; white-space: nowrap; }
.tool-file-heading span { flex: 0 0 auto; color: var(--muted); font-family: var(--mono); font-size: 8px; text-transform: uppercase; }
.tool-empty { margin: 0; color: var(--muted); font-size: 10px; }

.approval-area { grid-row: 3; z-index: 3; padding: 0 max(22px, calc((100% - 860px) / 2)); }
.approval-card { max-width: 820px; margin: 0 auto 12px; padding: 14px; border: 1px solid var(--warning-line); border-radius: 13px; background: var(--warning-soft); box-shadow: var(--shadow-soft); }
.approval-heading { display: flex; align-items: flex-start; gap: 10px; }
.approval-icon { width: 30px; height: 30px; display: grid; place-items: center; flex: 0 0 auto; border: 1px solid var(--warning-line); border-radius: 9px; color: var(--warning); background: var(--surface); }
.approval-heading strong, .approval-heading span { display: block; }
.approval-heading strong { font-size: 12px; }
.approval-heading span { margin-top: 3px; color: var(--muted); font-size: 9px; }
.approval-card code { display: block; max-height: 130px; margin: 11px 0 12px; padding: 10px; overflow: auto; border: 1px solid color-mix(in srgb, var(--warning-line) 72%, var(--line)); border-radius: 8px; color: var(--text-soft); background: color-mix(in srgb, var(--surface) 62%, transparent); font-family: var(--mono); font-size: 10px; line-height: 1.5; white-space: pre-wrap; overflow-wrap: anywhere; }
.approval-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; }
.approval-actions button { min-height: 32px; padding: 0 11px; border-radius: 8px; font-size: 10px; font-weight: 700; }
.approval-actions .danger { border: 1px solid color-mix(in srgb, var(--danger) 30%, var(--line)); }

.composer-dock { grid-row: 4; z-index: 4; padding: 12px max(18px, calc((100% - 900px) / 2)) max(12px, env(safe-area-inset-bottom)); border-top: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 94%, transparent); backdrop-filter: blur(18px); }
.read-only-notice { max-width: 900px; min-height: 34px; display: flex; align-items: center; gap: 8px; margin: 0 auto 8px; padding: 7px 11px; border: 1px solid var(--warning-line); border-radius: 10px; color: var(--warning); background: var(--warning-soft); font-size: 10px; }
.read-only-notice strong { margin-right: 4px; }
.composer { border: 1px solid var(--line-strong); border-radius: 15px; background: var(--surface); box-shadow: var(--shadow-soft); transition: border-color .16s, box-shadow .16s; }
.composer:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 10%, transparent), var(--shadow-soft); }
.composer textarea { width: 100%; min-height: 52px; max-height: 190px; display: block; resize: none; padding: 13px 14px 5px; border: 0; outline: 0; color: var(--text); background: transparent; font-size: 13px; line-height: 1.55; }
.composer textarea::placeholder { color: var(--faint); }
.composer-toolbar { min-height: 43px; display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 5px 7px 7px 13px; }
.composer-meta { min-width: 0; display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 9px; }
.composer-meta span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.composer-meta span:first-child { max-width: 28vw; }
.composer-actions { display: flex; align-items: center; gap: 6px; }
.runtime-picker { position: relative; }
.runtime-picker summary { min-height: 32px; max-width: 220px; display: flex; align-items: center; gap: 6px; padding: 0 9px; border: 1px solid var(--line); border-radius: 9px; color: var(--text-soft); background: var(--surface-soft); font-family: var(--mono); font-size: 9px; font-weight: 650; cursor: pointer; list-style: none; user-select: none; }
.runtime-picker summary::-webkit-details-marker { display: none; }
.runtime-picker summary:hover { border-color: var(--line-strong); background: var(--surface-hover); }
.runtime-picker[open] summary { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); color: var(--accent-strong); background: var(--accent-soft); }
.runtime-picker.disabled summary { opacity: .55; cursor: not-allowed; pointer-events: none; }
.runtime-summary-icon { flex: 0 0 auto; color: var(--accent); font-size: 11px; }
#runtime-summary-text { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.runtime-summary-chevron { flex: 0 0 auto; color: var(--muted); transition: transform .16s; }
.runtime-picker[open] .runtime-summary-chevron { transform: rotate(180deg); }
.runtime-menu { position: absolute; z-index: 40; right: 0; bottom: calc(100% + 10px); width: min(340px, 78vw); padding: 14px; border: 1px solid var(--line-strong); border-radius: 13px; background: var(--surface); box-shadow: var(--shadow); }
.runtime-menu-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.runtime-menu-heading strong { display: block; margin-top: 2px; font-size: 12px; }
.runtime-default-badge { padding: 3px 6px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: var(--surface-soft); font-family: var(--mono); font-size: 8px; }
.runtime-field { display: grid; gap: 5px; margin-top: 10px; color: var(--muted); font-size: 9px; font-weight: 700; }
.runtime-field select { width: 100%; min-height: 38px; padding: 0 30px 0 10px; border: 1px solid var(--line); border-radius: 9px; color: var(--text); background: var(--surface-soft); font: 600 10px var(--mono); outline: 0; }
.runtime-field select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 10%, transparent); }
.runtime-field select:disabled { opacity: .58; }
.runtime-description { min-height: 28px; margin: 6px 2px 0; color: var(--muted); font-size: 9px; line-height: 1.45; }
.runtime-note { margin: 12px 0 0; padding-top: 9px; border-top: 1px solid var(--line); color: var(--faint); font-size: 8px; line-height: 1.45; }
.danger { min-height: 32px; display: flex; align-items: center; gap: 5px; padding: 0 9px; color: var(--danger); background: var(--danger-soft); font-size: 10px; font-weight: 700; }
.danger:not(:disabled):hover { filter: brightness(.95); }
.send-button { min-height: 32px; display: flex; align-items: center; gap: 8px; padding: 0 8px 0 11px; color: #fff; background: var(--accent-strong); font-size: 10px; font-weight: 720; }
.send-button span:last-child { width: 19px; height: 19px; display: grid; place-items: center; border-radius: 6px; background: rgba(255, 255, 255, .17); font-size: 13px; }
.send-button:not(:disabled):hover { filter: brightness(1.08); }
.composer-hint { margin: 7px 0 0; color: var(--faint); font-size: 9px; text-align: center; }
.mobile-nav { display: none; }

@media (max-width: 1180px) {
  .app-shell { grid-template-columns: 218px 292px minmax(0, 1fr); }
  .topbar { grid-template-columns: 218px minmax(0, 1fr) auto; }
  .badge { display: none; }
  .topbar-context { padding-inline: 14px; }
}

@media (max-width: 940px) and (min-width: 821px) {
  .app-shell { grid-template-columns: 200px 270px minmax(0, 1fr); }
  .topbar { grid-template-columns: 200px minmax(0, 1fr) auto; }
  .brand-copy small, .topbar-context span { display: none; }
  .thread-tools { grid-template-columns: 1fr; }
  .composer-meta span:last-child { display: none; }
}

@media (max-width: 820px) {
  body { overflow: hidden; }
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: var(--topbar-height) minmax(0, 1fr) var(--mobile-nav-height);
  }
  .topbar { grid-column: 1; grid-template-columns: minmax(0, 1fr) auto; padding-inline: 12px; }
  .topbar-context { display: none; }
  .brand-copy small { display: none; }
  .topbar-actions { gap: 3px; }
  .topbar-actions .ghost { padding-inline: 7px; }
  .status { max-width: 125px; }
  .status span { overflow: hidden; text-overflow: ellipsis; }
  .workspace-rail, .threads-pane, .conversation { grid-column: 1; grid-row: 2; border-right: 0; }
  .workspace-rail, .threads-pane { border-bottom: 0; }
  .app-shell[data-mobile-pane="workspace"] .threads-pane,
  .app-shell[data-mobile-pane="workspace"] .conversation,
  .app-shell[data-mobile-pane="threads"] .workspace-rail,
  .app-shell[data-mobile-pane="threads"] .conversation,
  .app-shell[data-mobile-pane="conversation"] .workspace-rail,
  .app-shell[data-mobile-pane="conversation"] .threads-pane { display: none; }
  .workspace-rail { background: var(--bg); }
  .nav-section { padding-inline: 14px; }
  .project-list { padding-bottom: 18px; }
  .rail-footer { margin-top: auto; }
  .threads-pane { background: var(--bg); }
  .thread-tools { padding-inline: 14px; }
  .thread-list { padding-inline: 10px; }
  .conversation-header { min-height: 62px; padding-inline: 10px 14px; }
  .mobile-back { display: grid; }
  .conversation-header h2 { max-width: 59vw; }
  .detail-level-control > span { display: none; }
  .messages { padding: 22px 15px 28px; }
  .approval-area { padding-inline: 15px; }
  .composer-dock { padding: 9px 10px max(9px, env(safe-area-inset-bottom)); }
  .composer-meta span:first-child { max-width: 42vw; }
  .composer-hint { display: none; }
  .runtime-menu { position: fixed; left: 10px; right: 10px; bottom: calc(var(--mobile-nav-height) + 91px + env(safe-area-inset-bottom)); width: auto; max-height: calc(100dvh - var(--mobile-nav-height) - 116px - env(safe-area-inset-bottom)); overflow-y: auto; }
  .runtime-field select { min-height: 44px; }
  .mobile-nav {
    z-index: 30;
    grid-row: 3;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    padding-bottom: env(safe-area-inset-bottom);
    border-top: 1px solid var(--line);
    background: color-mix(in srgb, var(--surface) 95%, transparent);
    backdrop-filter: blur(18px);
  }
  .mobile-nav button { display: grid; place-items: center; align-content: center; gap: 2px; color: var(--muted); background: transparent; font-size: 9px; }
  .mobile-nav button span:first-child { font-family: var(--mono); font-size: 17px; }
  .mobile-nav button.active { color: var(--accent-strong); background: var(--accent-soft); }
}

@media (max-width: 480px) {
  .login-shell { padding: 0; align-items: stretch; }
  .login-card { width: 100%; min-height: 100dvh; padding: 28px 20px; border: 0; border-radius: 0; box-shadow: none; }
  .route-picker { grid-template-columns: 1fr; }
  .brand-copy strong { font-size: 12px; }
  .topbar .brand-mark { width: 30px; height: 30px; }
  .theme-button { display: none; }
  .status { max-width: 108px; padding-inline: 7px; }
  .pane-heading { min-height: 68px; }
  .thread-tools { grid-template-columns: minmax(0, 1fr) 78px 88px; }
  .search-box kbd { display: none; }
  .turn-state { padding-inline: 7px; }
  .turn-state span { max-width: 70px; overflow: hidden; text-overflow: ellipsis; }
  .hidden-details-button { max-width: 116px; overflow: hidden; text-overflow: ellipsis; }
  .detail-level-control { padding-inline: 5px; }
  .empty-state { padding-inline: 22px; }
  .empty-shortcuts { display: none; }
  .message { margin-bottom: 20px; }
  .message.user .content { padding: 11px 12px; }
  .composer-meta span:last-child { display: none; }
  .runtime-picker summary { max-width: 154px; padding-inline: 7px; }
  .send-button span:first-child, .danger { font-size: 0; }
  .danger span { font-size: 10px; }
  .send-button { padding-left: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}