:root {
  color-scheme: dark;
  --bg: #080b12;
  --panel: #111827;
  --panel-soft: #172033;
  --panel-strong: #1f2937;
  --border: #2d3748;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --accent: #60a5fa;
  --accent-strong: #2563eb;
  --good: #22c55e;
  --warn: #f59e0b;
  --danger: #ef4444;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 220px 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 12px 18px;
  background: rgba(8, 11, 18, 0.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.brand {
  display: flex;
  gap: 10px;
  align-items: center;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--accent-strong);
  font-weight: 800;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 2px;
}

.main-tabs,
.model-tabs {
  display: flex;
  gap: 8px;
  align-items: center;
}

.main-tab,
.model-tab,
.secondary-button,
.project-row {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 999px;
  padding: 9px 13px;
}

.main-tab.active,
.model-tab.active {
  background: var(--accent-strong);
  border-color: var(--accent);
}

.model-tab.debate.active {
  background: var(--warn);
  border-color: var(--warn);
  color: #111827;
}

.status-pill,
.project-chip {
  border: 1px solid var(--border);
  background: var(--panel-soft);
  border-radius: 999px;
  color: var(--muted);
  padding: 8px 12px;
  white-space: nowrap;
}

.workspace {
  flex: 1;
  padding: 22px;
}

.panel {
  display: none;
}

.panel.active {
  display: block;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.eyebrow {
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.12em;
  margin: 0 0 6px;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 8px;
}

.muted {
  color: var(--muted);
}

.chat-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 16px;
  margin-top: 14px;
}

.chat-card,
.context-card,
.tool-card,
.result-card,
.empty-state {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
}

.chat-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 12px;
}

.debate-controls {
  display: none;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  padding: 10px;
  border: 1px solid rgba(245, 158, 11, 0.45);
  border-radius: 14px;
  background: rgba(245, 158, 11, 0.08);
}

.debate-controls.visible {
  display: flex;
}

.debate-controls label {
  margin: 0;
  white-space: nowrap;
}

.chat-log {
  height: 420px;
  overflow: auto;
  background: #050814;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
}

.chat-message {
  max-width: 78%;
  margin-bottom: 12px;
  padding: 11px 12px;
  border-radius: 14px;
  background: var(--panel-strong);
}

.chat-message.user {
  margin-left: auto;
  background: var(--accent-strong);
}

.message-meta {
  color: var(--muted);
  font-size: 11px;
  margin-bottom: 5px;
  text-transform: uppercase;
}

.chat-message.user .message-meta {
  color: #bfdbfe;
}

.message-body {
  white-space: pre-wrap;
  line-height: 1.45;
}

.chat-input {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 140px;
  gap: 10px;
  margin-top: 12px;
}

textarea,
input,
select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #050814;
  color: var(--text);
  padding: 11px 12px;
}

label {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin: 12px 0 6px;
}

.chat-input button,
.tool-card button {
  border: 0;
  border-radius: 12px;
  background: var(--good);
  color: #03130a;
  font-weight: 800;
  padding: 12px 14px;
}

.context-box,
pre {
  margin: 12px 0 0;
  white-space: pre-wrap;
  overflow: auto;
  max-height: 520px;
  background: #050814;
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--text);
  padding: 12px;
}

.tool-grid {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 16px;
}

.project-list {
  display: grid;
  gap: 10px;
  max-width: 640px;
}

.project-row {
  text-align: left;
}

.empty-state {
  min-height: 260px;
  display: grid;
  place-content: center;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 980px) {
  .topbar {
    grid-template-columns: 1fr;
  }

  .main-tabs,
  .model-tabs {
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .chat-layout,
  .tool-grid {
    grid-template-columns: 1fr;
  }
}