:root {
  --bg: #efe7ff;
  --surface: #ffffff;
  --surface2: #f7f4ff;
  --border: #111827;
  --accent: #6d28d9;
  --accent-muted: #7c3aed;
  --text: #111827;
  --muted: #4b5563;
  --success: #16a34a;
  --warn: #f59e0b;
  --maxw: 1180px;
  --chat-cols: 1fr;
  --activity-cols: minmax(300px, 0.38fr);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.shell {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.25rem 1rem 2rem;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.app-title {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.app-sub {
  margin: 0.2rem 0 0;
  font-size: 0.95rem;
}

.meta {
  text-align: right;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: var(--surface2);
  border: 1px solid var(--border);
  font-size: 0.8rem;
}

.pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--success) 35%, transparent);
}

.pill.busy .dot {
  background: var(--warn);
  animation: pulse 1.1s ease-in-out infinite;
}

@keyframes pulse {
  50% { opacity: 0.35; transform: scale(0.9); }
}

.llm-line {
  margin-top: 0.35rem;
  max-width: 22rem;
}

.layout {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.bottom-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (max-width: 900px) {
  .bottom-grid {
    gap: 0.85rem;
  }
}

.panel {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 0;
  overflow: hidden;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-bottom: 2px solid var(--border);
  background: var(--surface2);
}

.panel-head h2 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
}

.section-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 0.85rem;
  line-height: 1;
  width: 1.5rem;
  height: 1.5rem;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.panel.section.collapsed > :not(.panel-head) {
  display: none;
}

.chat-log {
  flex: 1;
  padding: 0.75rem 1rem;
  overflow-y: auto;
  max-height: min(52vh, 520px);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.bubble {
  border-radius: 0;
  padding: 0.55rem 0.75rem;
  font-size: 0.92rem;
  line-height: 1.45;
  border: 2px solid var(--border);
  white-space: pre-wrap;
  word-break: break-word;
}

.bubble.user {
  align-self: flex-end;
  background: color-mix(in srgb, var(--accent) 12%, var(--surface2));
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
}

.bubble.assistant {
  align-self: flex-start;
  background: var(--surface2);
}

.bubble.thinking {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  opacity: 0.95;
}

.bubble .who {
  font-size: 0.72rem;
  text-transform: lowercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.composer {
  border-top: 2px solid var(--border);
  padding: 0.75rem 1rem 1rem;
  background: var(--surface2);
}

.composer textarea {
  width: 100%;
  resize: vertical;
  min-height: 4.5rem;
  border-radius: 0;
  border: 2px solid var(--border);
  background: var(--bg);
  color: var(--text);
  padding: 0.55rem 0.65rem;
  font: inherit;
}

.composer textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 55%, transparent);
  outline-offset: 1px;
}

.composer-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.5rem;
  gap: 0.75rem;
}

.composer button {
  border: none;
  border-radius: 0;
  padding: 0.45rem 1rem;
  font-weight: 600;
  cursor: pointer;
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 92%, white), var(--accent-muted));
  color: #041018;
}

.composer button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.activity-body {
  padding: 0.75rem 1rem 1rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-height: 0;
}

.subhead {
  margin-top: 0.25rem;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  max-height: min(38vh, 360px);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.timeline li {
  border-radius: 0;
  border: 2px solid var(--border);
  background: var(--surface2);
  padding: 0.45rem 0.55rem;
  font-size: 0.82rem;
  line-height: 1.35;
}

.timeline li .t {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.72rem;
  text-transform: lowercase;
  letter-spacing: 0.04em;
}

.timeline li .body {
  margin-top: 0.2rem;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

.summary-box {
  border-radius: 0;
  border: 2px solid var(--border);
  background: var(--bg);
  padding: 0.6rem 0.65rem;
  font-size: 0.88rem;
  line-height: 1.45;
  white-space: pre-wrap;
  min-height: 3rem;
  max-height: min(28vh, 280px);
  overflow-y: auto;
}

.muted { color: var(--muted); }
.small { font-size: 0.8rem; }

.hint { flex: 1; }

.dashboard-panel {
  min-height: 0;
}

.dashboard-body {
  padding: 0.75rem 1rem 1rem;
  flex: 0;
  overflow-y: visible;
  min-height: 0;
}

.widgets {
  display: grid;
  grid-template-columns: repeat(4, minmax(210px, 1fr));
  gap: 0.75rem;
}

.widget-card {
  box-shadow: 0 1px 0 color-mix(in srgb, var(--border) 20%, transparent);
}

@media (max-width: 980px) {
  .widgets {
    grid-template-columns: repeat(2, minmax(220px, 1fr));
  }
}

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

.widget-card {
  border-radius: 0;
  border: 2px solid var(--border);
  background: var(--surface);
  padding: 0.7rem 0.75rem;
}

.widget-title {
  font-size: 0.85rem;
  color: var(--text);
  font-weight: 800;
  margin-bottom: 0.45rem;
}

.metric-value {
  font-size: 1.75rem;
  font-weight: 750;
  letter-spacing: -0.01em;
  margin-bottom: 0.15rem;
}

.metric-sub {
  font-size: 0.82rem;
  color: var(--muted);
}

.status-lines {
  font-size: 0.88rem;
  line-height: 1.4;
  white-space: pre-wrap;
  word-break: break-word;
}

.kv-table {
  width: 100%;
  border-collapse: collapse;
}

.kv-table th {
  text-align: left;
  font-size: 0.75rem;
  color: var(--muted);
  font-weight: 650;
  padding: 0.1rem 0.1rem 0.35rem;
  border-bottom: 1px solid var(--border);
}

.kv-table td {
  padding: 0.35rem 0.1rem;
  font-size: 0.86rem;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
}

.logs-list {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.log-line {
  font-size: 0.82rem;
  line-height: 1.3;
  border: 2px solid var(--border);
  background: var(--surface);
  border-radius: 0;
  padding: 0.4rem 0.5rem;
  overflow: hidden;
}

.log-at {
  font-size: 0.72rem;
  color: var(--muted);
  margin-bottom: 0.15rem;
}