:root {
  color-scheme: light;
  /* Used by verification script */
  --panel-bg: rgba(15, 23, 42, 0.7);
  --background: #ffffff;
  --surface: #ffffff;
  --surface-subtle: #f8fafc;
  --surface-muted: #f1f5f9;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --divider: #e5e7eb;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent: #2563eb;
  --accent-strong: #1d4ed8;
  --accent-soft: #eff6ff;
  --success-bg: #ecfdf3;
  --success-text: #047857;
  --warning-bg: #fef3c7;
  --warning-text: #b45309;
  --danger-bg: #fee2e2;
  --danger-text: #b91c1c;
  font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text-primary);
  font-family: var(--font-family, 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif);
  line-height: 1.55;
  min-height: 100vh;
}

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

a:hover {
  text-decoration: underline;
}

button {
  font: inherit;
  font-weight: 600;
  padding: 0.55rem 1.15rem;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
  background: transparent;
  color: var(--text-primary);
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.primary-button {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.2);
}

.primary-button:hover {
  background: var(--accent-strong);
}

.secondary-button {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--accent);
}

.secondary-button:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.text-button {
  border: none;
  padding: 0;
  background: none;
  color: var(--accent);
}

.text-button:hover {
  text-decoration: underline;
}

.app-shell {
  max-width: 1600px;
  margin: 0 auto;
  padding: 36px 40px 48px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.page-title h1 {
  margin: 0;
  font-size: 1.9rem;
  font-weight: 700;
}

.page-title p {
  margin: 0.35rem 0 0;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.page-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.layout {
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr) 280px;
  gap: 24px;
  align-items: flex-start;
}

.sidebar,
.info-rail {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.panel,
.info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px 22px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

.panel h2,
.info-card h2,
.info-card h3 {
  margin: 0;
  font-size: 1.05rem;
  color: var(--text-primary);
}

.intro-panel h2 {
  font-size: 1.15rem;
}

.intro-panel p,
.panel-caption {
  margin: 0.65rem 0 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.55;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 0.85rem;
}

.room-list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.room-list-empty {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.room-card {
  background: var(--surface-subtle);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 12px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  text-align: left;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.room-card:hover {
  border-color: var(--accent);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
  transform: translateY(-1px);
}

.room-card.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

.room-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.room-card-top-right {
  display: flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
  margin-top: 0;
}

.room-card-text h3,
.room-title {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.25;
  padding-right: 0;
}

.room-card-text p {
  margin: 0.25rem 0 0;
  color: var(--text-secondary);
  font-size: 0.86rem;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.room-card-actions { display: none; }

.room-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.12rem 0.55rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.76rem;
}

.thread-list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.thread-card {
  background: var(--surface-subtle);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  text-align: left;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.thread-card:hover {
  border-color: var(--accent);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
  transform: translateY(-1px);
}

.thread-card h3 {
  margin: 0;
  font-size: 0.95rem;
}

.thread-card .thread-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.thread-card .thread-actions {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.thread-list-empty {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.thread-list-note {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.pin-toggle {
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid transparent;
  background: none;
  color: var(--text-muted);
}

.pin-toggle:hover,
.pin-toggle.active {
  color: var(--accent);
}

.room-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  line-height: 1.1;
  color: var(--text-secondary);
  margin-top: 4px;
}

.new-room-panel.open {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.18);
}

.new-room {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

input[type='text'],
input[type='password'],
input[type='email'],
textarea,
select {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  padding: 0.65rem 0.75rem;
  font: inherit;
  color: var(--text-primary);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-col {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

textarea {
  resize: vertical;
  min-height: 90px;
  line-height: 1.5;
}

.api-menu {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-bottom: 1.1rem;
}

.api-menu button {
  text-align: left;
  padding: 0.55rem 0.75rem;
  border-radius: 12px;
  background: var(--surface-subtle);
  border: 1px solid transparent;
  color: var(--text-secondary);
}

.api-menu button:hover {
  border-color: var(--border-strong);
  color: var(--accent);
}

.api-menu button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 12px 26px rgba(37, 99, 235, 0.2);
}

.api-details {
  border-radius: 14px;
  border: 1px dashed var(--border);
  padding: 1rem 1.1rem;
  background: var(--surface-subtle);
}

.api-card h3 {
  margin: 0 0 0.55rem;
  font-size: 1rem;
}

.api-card p {
  margin: 0 0 0.75rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.api-card ul {
  margin: 0 0 0.75rem;
  padding-left: 1.15rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.45;
}

.api-card li strong {
  color: var(--accent);
}

.api-card pre {
  margin: 0;
  background: #0f172a;
  color: #f8fafc;
  border-radius: 12px;
  padding: 0.75rem;
  font-size: 0.85rem;
  overflow-x: auto;
}

.chat-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.1);
}

.chat-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.chat-header-text {
  flex: 1 1 auto;
  min-width: 0;
}

.chat-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.chat-header-actions[hidden] {
  display: none;
}

.chat-header-actions button {
  white-space: nowrap;
}

.chat-header h2 {
  margin: 0;
  font-size: 1.4rem;
}

.chat-subtitle {
  margin: 0.4rem 0 0;
  color: var(--text-secondary);
  font-size: 0.96rem;
}

.status-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 12px;
  padding: 0.6rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--surface-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.status-bar .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.18);
}

.status-bar[data-tone='connected'] {
  background: var(--success-bg);
  color: var(--success-text);
  border-color: rgba(4, 120, 87, 0.25);
}

.status-bar[data-tone='assistant'] {
  background: var(--warning-bg);
  color: var(--warning-text);
  border-color: rgba(194, 65, 12, 0.25);
}

.status-bar[data-tone='error'] {
  background: var(--danger-bg);
  color: var(--danger-text);
  border-color: rgba(185, 28, 28, 0.25);
}

.status-bar[data-tone='pending'] {
  background: var(--accent-soft);
  color: var(--accent);
}

.alert {
  border-radius: 12px;
  padding: 0.65rem 0.8rem;
  font-size: 0.88rem;
  font-weight: 500;
  border: 1px solid rgba(185, 28, 28, 0.25);
  background: var(--danger-bg);
  color: var(--danger-text);
}

.alert[data-tone='info'] {
  border-color: rgba(37, 99, 235, 0.25);
  background: var(--accent-soft);
  color: var(--accent);
}

.alert[data-tone='success'] {
  border-color: rgba(4, 120, 87, 0.25);
  background: var(--success-bg);
  color: var(--success-text);
}

.chat-body {
  min-height: 320px;
}

.message-feed {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 280px;
  max-height: 58vh;
  overflow-y: auto;
}

.message {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  background: var(--surface-subtle);
}

.message.self {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.message.assistant {
  border-color: rgba(4, 120, 87, 0.35);
  background: var(--success-bg);
}

.message .meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.message .meta strong {
  color: var(--text-primary);
}

.message .body {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text-primary);
  white-space: pre-wrap;
}

.message .actions {
  margin-top: 6px;
  display: flex;
  gap: 10px;
}
.message .actions button {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  padding: 4px 8px;
  border-radius: 8px;
  font-weight: 600;
}
.message .actions button.active { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.chat-author-link { color: var(--accent); cursor: pointer; text-decoration: none; }
.chat-author-link:hover { text-decoration: underline; }

.replies {
  margin-top: 8px;
  display: none;
  flex-direction: column;
  gap: 6px;
}
.replies.open { display: flex; }
.reply {
  border-left: 3px solid var(--border-strong);
  padding-left: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.reply .head { display: flex; align-items: center; gap: 8px; }
.reply .avatar { width: 22px; height: 22px; border-radius: 50%; display:flex; align-items:center; justify-content:center; color:#fff; font-weight:700; font-size:11px; flex: 0 0 auto; }
.reply .meta { font-size: 0.78rem; color: var(--text-secondary); display:flex; gap:8px; }
.reply .content { white-space: pre-wrap; color: var(--text-primary); }

.form-card {
  border: 1px dashed var(--border-strong);
  background: var(--surface-subtle);
  padding: 10px;
  border-radius: 10px;
}
.form-card h4 { margin: 0 0 8px; }
.inline-form .fields { display: grid; grid-template-columns: 1fr; gap: 8px; }
.inline-form label { font-size: 0.85rem; color: var(--text-secondary); display: grid; gap: 6px; }
.inline-form input { border: 1px solid var(--border-strong); border-radius: 10px; padding: 8px 10px; }
.inline-form .attachments { margin-top: 10px; }
.inline-form .attachments h5 { margin: 8px 0 6px; font-size: 12px; color: var(--muted); }
.inline-form .attachment-row { display: grid; grid-template-columns: 1fr 1fr auto; gap: 6px; margin: 6px 0; align-items: center; }
.inline-form .attachment-row input { width: 100%; }
.inline-form .attachment-actions { display: flex; gap: 8px; margin-top: 6px; }
.inline-form textarea { border: 1px solid var(--border-strong); border-radius: 10px; padding: 8px 10px; min-height: 70px; resize: vertical; }
.inline-form select { border: 1px solid var(--border-strong); border-radius: 10px; padding: 8px 10px; }
.inline-form .actions { margin-top: 8px; display: flex; gap: 8px; }
.advanced-toggle { margin-top: 6px; display: inline-flex; align-items: center; gap: 8px; cursor: pointer; color: var(--accent); }
.advanced-fields { margin-top: 8px; border-top: 1px dashed var(--divider); padding-top: 8px; display: none; }
.advanced-fields.open { display: block; }

.kanban-embed { border: 1px solid var(--border); border-radius: 10px; background: var(--surface); padding: 8px; }
.kanban-embed-header { display:flex; justify-content: space-between; align-items:center; margin-bottom: 6px; }
.kanban-columns { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.kanban-column { background: var(--surface-subtle); border: 1px solid var(--divider); border-radius: 8px; padding: 6px; display:flex; flex-direction:column; gap:6px; }
.kanban-column-title { font-weight: 600; font-size: 0.9rem; }
.kanban-items { display:flex; flex-direction:column; gap:6px; }
.kanban-item { border: 1px solid var(--border-strong); background:#fff; border-radius: 8px; padding: 6px 8px; font-size: 0.9rem; }

.empty-state {
  border: 1px dashed var(--border-strong);
  border-radius: 14px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: var(--surface);
}

.empty-state-canvas {
  background: var(--surface-subtle);
  border: 1px solid var(--divider);
  border-radius: 12px;
  padding: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.empty-state-input {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 0.85rem 1rem;
  background: var(--surface);
  color: var(--text-muted);
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.08);
}

.empty-state-copy h3 {
  margin: 0;
  font-size: 1.12rem;
}

.empty-state-copy p {
  margin: 0.6rem 0 0;
  color: var(--text-secondary);
}

.empty-state-copy h4 {
  margin: 0.8rem 0 0.45rem;
  font-size: 0.95rem;
}

.empty-state-copy ul {
  margin: 0 0 0.65rem;
  padding-left: 1.2rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.45;
}

.empty-state-note {
  margin: 0;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--accent);
}

.composer {
  border-top: 1px solid var(--divider);
  padding-top: 16px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: 10px;
}

.composer textarea {
  min-height: 120px;
  grid-column: 1;
  background: var(--surface-subtle);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  padding: 12px 14px;
  box-shadow: inset 0 0 0 1px #fff, 0 0 0 4px rgba(226, 232, 240, 0.6);
}

.composer textarea::placeholder {
  color: var(--text-muted);
}

.composer-actions {
  grid-column: 2;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
}

.typing-bar {
  grid-column: 1 / -1;
  min-height: 18px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.command-hints {
  grid-column: 1 / -1;
  position: relative;
  margin-top: 4px;
}
.command-hints[hidden] { display: none !important; }
.command-hints::before { content: ''; }
.command-hints-list {
  position: absolute;
  left: 0;
  top: 0;
  width: 360px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: 0 12px 28px rgba(15,23,42,0.15);
  border-radius: 10px;
  max-height: 320px;
  overflow-y: auto;
  z-index: 6;
}
.command-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  font-size: 0.92rem;
  border-bottom: 1px solid var(--divider);
}
.command-item:last-child { border-bottom: none; }
.command-item strong { color: var(--text-primary); }
.command-item small { color: var(--text-secondary); }
.command-item.active { background: var(--accent-soft); color: var(--accent); }

.command-syntax {
  margin-top: 8px;
  padding: 8px 10px;
  background: var(--surface-subtle);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.toggle-assistant {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.toggle-assistant input[type='checkbox'] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.composer-actions-right {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
  position: relative;
}

.model-button {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  padding: 0.5rem 0.75rem;
  border-radius: 10px;
  font-weight: 600;
}

.model-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  width: 240px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.15);
  border-radius: 12px;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 5;
}

.model-menu[hidden] { display: none !important; }

.model-search {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  padding: 0.45rem 0.6rem;
  font: inherit;
}

.model-options {
  max-height: 240px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.model-option {
  text-align: left;
  border: 1px solid transparent;
  background: var(--surface-subtle);
  padding: 0.4rem 0.55rem;
  border-radius: 8px;
  color: var(--text-primary);
}

.model-option.selected,
.model-option:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.pin-toggle { width: 18px; height: 18px; font-size: 0.9rem; }
.room-meta .pin-toggle {
  position: static;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
}

.info-rail {
  gap: 18px;
}

.info-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.room-guide h3 {
  margin: 0;
  font-size: 1.05rem;
}

.room-guide-description,
.room-guide p {
  margin: 0.55rem 0 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.55;
}

.room-guide ul {
  margin: 0.6rem 0 0;
  padding-left: 1.2rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.45;
}

.room-guide-note {
  margin: 0.7rem 0 0;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
}

.participant-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.participant-count {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.participant-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.participant {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.badge {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
}

.participant-empty {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.leaderboard-body {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.leaderboard-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.6rem 0.75rem;
  background: var(--surface-subtle);
}

.leaderboard-row:hover {
  border-color: var(--accent);
}

.leaderboard-rank {
  font-weight: 700;
  color: var(--accent);
  width: 2.4rem;
  text-align: center;
}

.leaderboard-meta {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
}

.leaderboard-meta strong {
  font-size: 0.95rem;
  color: var(--text-primary);
}

.leaderboard-meta span {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.leaderboard-empty,
.leaderboard-loading,
.leaderboard-error {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.leaderboard-error {
  color: var(--danger-text);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease;
  z-index: 20;
}

.modal-backdrop.visible {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--surface);
  border-radius: 20px;
  padding: 28px 32px;
  max-width: 460px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.15);
}

.modal h2 {
  margin: 0;
  font-size: 1.35rem;
}

.modal p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.modal-switch {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  background: var(--surface-subtle);
  border-radius: 12px;
  padding: 4px;
  gap: 6px;
}

.modal-switch-button {
  border: none;
  background: transparent;
  padding: 0.5rem 0.75rem;
  border-radius: 10px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.modal-switch-button.active {
  background: var(--surface);
  color: var(--text-primary);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.12);
}

.modal-panel {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

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

.modal-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.modal-form input {
  width: 100%;
}

.modal-inline-inputs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.modal-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

@media (max-width: 600px) {
  .modal-inline-inputs {
    grid-template-columns: 1fr;
  }
}

.modal-login-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.command-modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  display: grid;
  place-items: center;
  padding: 24px;
  z-index: 30;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease;
}

.command-modal.visible {
  opacity: 1;
  visibility: visible;
}

.command-modal .command-dialog {
  background: var(--surface);
  border-radius: 20px;
  width: min(520px, 100%);
  max-height: 85vh;
  overflow-y: auto;
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: 0 22px 48px rgba(15, 23, 42, 0.18);
}

.command-dialog h2 {
  margin: 0;
  font-size: 1.3rem;
}

.command-dialog p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.94rem;
}

.command-dialog form {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.command-dialog label {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.command-dialog input,
.command-dialog textarea,
.command-dialog select {
  width: 100%;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
  font: inherit;
  background: var(--surface-subtle);
}

.command-dialog textarea {
  min-height: 120px;
  resize: vertical;
}

.command-dialog .command-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 4px;
}

.command-dialog .command-alert {
  border-radius: 12px;
  padding: 0.65rem 0.8rem;
  font-size: 0.88rem;
  border: 1px solid rgba(37, 99, 235, 0.25);
  background: var(--accent-soft);
  color: var(--accent);
}

.command-dialog .command-alert.error {
  border-color: rgba(185, 28, 28, 0.25);
  background: var(--danger-bg);
  color: var(--danger-text);
}

.modal .actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.modal .secondary {
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--accent);
  padding: 0.55rem 1rem;
  border-radius: 10px;
}

.modal .secondary:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.modal .confirm {
  background: var(--accent);
  color: #fff;
  padding: 0.55rem 1.25rem;
  border-radius: 10px;
  border: 1px solid var(--accent);
  font-weight: 600;
}

.modal .status-bar {
  border: none;
  background: none;
  color: var(--text-secondary);
  padding: 0;
  box-shadow: none;
}

.modal .status-bar .dot {
  box-shadow: none;
}

@media (max-width: 1180px) {
  .layout {
    grid-template-columns: 250px minmax(0, 1fr);
  }

  .info-rail {
    grid-column: 1 / -1;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .info-card {
    flex: 1 1 260px;
  }
}

@media (max-width: 960px) {
  .app-shell {
    padding: 30px 24px 40px;
  }

  .layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .chat-panel {
    order: 1;
  }

  .sidebar {
    order: 2;
  }

  .info-rail {
    order: 3;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .chat-header {
    flex-direction: column;
    align-items: stretch;
  }

  .chat-header-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .chat-header-actions button {
    width: 100%;
  }

  .composer {
    grid-template-columns: 1fr;
  }

  .composer-actions {
    grid-column: 1;
    align-items: flex-start;
  }

  .modal {
    padding: 24px 22px;
  }

  .composer {
    grid-template-columns: 1fr;
  }

  .composer-actions {
    grid-column: 1;
    align-items: flex-start;
  }

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

  button,
  .primary-button,
  .secondary-button {
    width: auto;
  }
}