:root {
  --bg: #0b0f14;
  --bg-elev: #121821;
  --bg-card: #161e29;
  --bg-soft: #1c2633;
  --border: #273244;
  --border-strong: #3a4d66;
  --text: #e8eef6;
  --muted: #8b9bb0;
  --accent: #3ecf8e;
  --accent-dim: rgba(62, 207, 142, 0.14);
  --accent-2: #5b9fd4;
  --warn: #e8b84a;
  --danger: #e86a6a;
  --ok: #3ecf8e;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --radius: 14px;
  --font: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

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

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(62, 207, 142, 0.08), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(91, 159, 212, 0.08), transparent 50%),
    var(--bg);
  color: var(--text);
  font-family: var(--font);
}

body {
  overflow: hidden;
}

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

.app-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: 100vh;
}

/* Sidebar */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.25rem 1rem;
  border-right: 1px solid var(--border);
  background: linear-gradient(180deg, #0e141c 0%, #0b1017 100%);
}

.brand {
  display: flex;
  gap: 0.85rem;
  align-items: center;
  padding: 0.35rem 0.5rem 1rem;
  border-bottom: 1px solid var(--border);
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background:
    linear-gradient(135deg, var(--accent), #2a9a6a 45%, transparent 46%),
    linear-gradient(315deg, var(--accent-2), transparent 60%),
    #1a2430;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.brand-name {
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 0.98rem;
}

.brand-sub {
  color: var(--muted);
  font-size: 0.72rem;
  margin-top: 0.15rem;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  width: 100%;
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  border-radius: 12px;
  padding: 0.75rem 0.7rem;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.nav-item:hover {
  background: var(--bg-soft);
  color: var(--text);
}

.nav-item.active {
  background: var(--accent-dim);
  border-color: rgba(62, 207, 142, 0.28);
  color: var(--text);
}

.nav-icon {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: 0.15rem;
}

.nav-item strong {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
}

.nav-item small {
  display: block;
  margin-top: 0.15rem;
  color: var(--muted);
  font-size: 0.72rem;
}

.sidebar-foot {
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(62, 207, 142, 0.6);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(62, 207, 142, 0.55); }
  70% { box-shadow: 0 0 0 10px rgba(62, 207, 142, 0); }
  100% { box-shadow: 0 0 0 0 rgba(62, 207, 142, 0); }
}

/* Main */
.main {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.25rem 1.5rem 1rem;
  border-bottom: 1px solid var(--border);
  background: rgba(11, 15, 20, 0.72);
  backdrop-filter: blur(10px);
}

.topbar h1 {
  margin: 0;
  font-size: 1.45rem;
  letter-spacing: -0.03em;
}

.topbar p {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.topbar-metrics {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.metric-chip,
.stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.55rem 0.8rem;
  min-width: 88px;
}

.metric-chip span,
.stat span {
  display: block;
  color: var(--muted);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.metric-chip strong,
.stat strong {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.98rem;
  font-family: var(--mono);
}

.module-panel {
  display: none;
  overflow: auto;
  padding: 1.15rem 1.5rem 1.75rem;
  height: calc(100vh - 92px);
}

.module-panel.active {
  display: block;
  animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

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

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.05rem;
  box-shadow: var(--shadow);
  min-width: 0;
}

.card.span-2 {
  grid-column: span 2;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.card-head h2,
.schema-box h3 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
}

textarea,
input[type="number"],
input[type="text"],
select {
  width: 100%;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
  outline: none;
  transition: border-color 0.15s ease;
}

textarea:focus,
input:focus,
select:focus {
  border-color: var(--accent-2);
}

textarea.mono,
.mono,
pre {
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.45;
}

.control-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  margin-top: 0.85rem;
}

.control-row label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.control-row input[type="number"] {
  width: 72px;
  padding: 0.4rem 0.5rem;
}

.control-row input[type="range"] {
  width: 110px;
  accent-color: var(--accent);
}

.control-row label.check {
  color: var(--text);
}

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

.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.block-label {
  display: block;
  margin: 0.85rem 0 0.4rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.btn {
  border: 1px solid var(--border-strong);
  background: var(--bg-soft);
  color: var(--text);
  border-radius: 10px;
  padding: 0.55rem 0.9rem;
  cursor: pointer;
  font-weight: 550;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn.primary {
  background: linear-gradient(180deg, #46d898, #2fbf7d);
  color: #062016;
  border-color: transparent;
  font-weight: 650;
}

.btn.ghost {
  background: transparent;
}

.btn.danger {
  background: rgba(232, 106, 106, 0.15);
  border-color: rgba(232, 106, 106, 0.45);
  color: #ffb4b4;
}

.btn.sm {
  padding: 0.3rem 0.55rem;
  font-size: 0.75rem;
}

.badge {
  font-size: 0.72rem;
  font-family: var(--mono);
  padding: 0.22rem 0.5rem;
  border-radius: 999px;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(62, 207, 142, 0.25);
}

.badge.soft {
  background: rgba(91, 159, 212, 0.12);
  color: #9cc7ea;
  border-color: rgba(91, 159, 212, 0.3);
}

.badge.warn {
  background: rgba(232, 184, 74, 0.14);
  color: #f0d18a;
  border-color: rgba(232, 184, 74, 0.35);
}

.scroll-list,
.log-stream,
.results-list,
.tool-list {
  max-height: 280px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.log-stream {
  font-family: var(--mono);
  font-size: 0.75rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem;
  min-height: 180px;
}

.log-line {
  color: var(--muted);
  border-left: 2px solid transparent;
  padding-left: 0.5rem;
}

.log-line.info { border-color: var(--accent-2); color: #c5d7ea; }
.log-line.ok { border-color: var(--ok); color: #b9efd3; }
.log-line.warn { border-color: var(--warn); color: #f0d18a; }
.log-line.err { border-color: var(--danger); color: #ffc0c0; }

.doc-item,
.result-item,
.cache-item,
.eval-row,
.adapter-item,
.tool-item {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
}

.doc-item h3,
.result-item h3,
.cache-item h3,
.adapter-item h3 {
  margin: 0 0 0.3rem;
  font-size: 0.86rem;
}

.doc-item p,
.result-item p,
.cache-item p,
.eval-row p,
.adapter-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.4;
}

.result-item .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.55rem;
}

.chip {
  font-family: var(--mono);
  font-size: 0.68rem;
  padding: 0.18rem 0.45rem;
  border-radius: 6px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--muted);
}

.citation {
  color: var(--accent);
  border-color: rgba(62, 207, 142, 0.3);
}

.metrics-board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  align-content: start;
}

.metric-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.metric-row.tight {
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--border);
}

.metric-row strong {
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.85rem;
}

.state-graph {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.state-node {
  min-width: 84px;
  text-align: center;
  padding: 0.7rem 0.8rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all 0.2s ease;
}

.state-node.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 0 4px rgba(62, 207, 142, 0.08);
}

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

.tool-item {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
}

.tool-item .sensitive {
  color: var(--warn);
  font-size: 0.7rem;
  font-family: var(--mono);
}

.guard-status {
  margin-bottom: 0.85rem;
}

.guard-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  font-size: 0.82rem;
}

.guard-pill.idle { color: var(--muted); }
.guard-pill.safe {
  color: #b9efd3;
  background: rgba(62, 207, 142, 0.1);
  border-color: rgba(62, 207, 142, 0.35);
}
.guard-pill.blocked {
  color: #ffc0c0;
  background: rgba(232, 106, 106, 0.12);
  border-color: rgba(232, 106, 106, 0.4);
}

.schema-box {
  margin-top: 1rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem;
}

.schema-box pre {
  margin: 0.5rem 0 0;
  color: var(--muted);
  white-space: pre-wrap;
}

.table-wrap {
  overflow: auto;
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.table-wrap th,
.table-wrap td {
  text-align: left;
  padding: 0.55rem 0.65rem;
  border-bottom: 1px solid var(--border);
}

.table-wrap th {
  color: var(--muted);
  font-weight: 550;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 8, 12, 0.72);
  display: grid;
  place-items: center;
  z-index: 50;
  padding: 1rem;
  backdrop-filter: blur(4px);
}

.modal-backdrop[hidden] {
  display: none;
}

.modal {
  width: min(520px, 100%);
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  padding: 1.15rem;
  box-shadow: var(--shadow);
  animation: fadeIn 0.2s ease;
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.modal-head h2 {
  margin: 0;
  font-size: 1.05rem;
}

.modal p {
  color: var(--muted);
  line-height: 1.45;
}

.modal pre {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem;
  overflow: auto;
  max-height: 180px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
  margin-top: 1rem;
}

/* Demo Mode */
.demo-launch {
  width: 100%;
  margin-bottom: 0.35rem;
}

.demo-launch.active {
  box-shadow: 0 0 0 2px rgba(62, 207, 142, 0.35);
}

.demo-kbd {
  font-size: 0.7rem;
  line-height: 1.4;
}

.demo-kbd kbd {
  font-family: var(--mono);
  font-size: 0.65rem;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
}

.demo-coach {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  width: min(400px, calc(100vw - 2rem));
  max-height: calc(100vh - 2rem);
  overflow: auto;
  z-index: 40;
  background: linear-gradient(180deg, #15202c 0%, #101821 100%);
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  padding: 1rem 1.05rem 1.05rem;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.22s ease;
}

.demo-coach[hidden] {
  display: none;
}

.demo-coach-head {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: flex-start;
}

.demo-eyebrow {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.demo-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}

.demo-time,
.demo-progress-text {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
}

.demo-progress {
  height: 4px;
  background: var(--bg-elev);
  border-radius: 99px;
  margin: 0.85rem 0 0.55rem;
  overflow: hidden;
}

.demo-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.25s ease;
}

.demo-dots {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.demo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: var(--bg-elev);
  padding: 0;
  cursor: pointer;
}

.demo-dot.done {
  background: rgba(62, 207, 142, 0.35);
  border-color: rgba(62, 207, 142, 0.5);
}

.demo-dot.active {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(62, 207, 142, 0.18);
}

.demo-coach h2 {
  margin: 0 0 0.85rem;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.demo-section {
  margin-bottom: 0.85rem;
}

.demo-section h3,
.demo-section-head h3 {
  margin: 0 0 0.4rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  font-weight: 600;
}

.demo-section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

.demo-section ol {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--text);
  font-size: 0.86rem;
  line-height: 1.45;
}

.demo-section ol li + li {
  margin-top: 0.3rem;
}

.demo-section.say blockquote {
  margin: 0;
  padding: 0.75rem 0.85rem;
  border-left: 3px solid var(--accent);
  background: rgba(62, 207, 142, 0.08);
  border-radius: 0 10px 10px 0;
  font-size: 0.88rem;
  line-height: 1.5;
  color: #d7efe4;
}

.demo-tip-box {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.55rem;
  align-items: start;
  padding: 0.65rem 0.75rem;
  border-radius: 10px;
  background: rgba(232, 184, 74, 0.08);
  border: 1px solid rgba(232, 184, 74, 0.22);
  margin-bottom: 0.95rem;
}

.demo-tip-box span {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--warn);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 0.15rem;
}

.demo-tip-box p {
  margin: 0;
  font-size: 0.8rem;
  color: #e8d9b0;
  line-height: 1.4;
}

.demo-actions {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.5rem;
}

body.demo-active .module-panel {
  padding-bottom: 2rem;
}

@media (max-width: 980px) {
  .demo-coach {
    right: 0.75rem;
    left: 0.75rem;
    width: auto;
    bottom: 0.75rem;
  }
  .demo-actions {
    grid-template-columns: 1fr 1fr;
  }
  .demo-actions #demo-run {
    grid-column: span 2;
  }
}

/* Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-thumb {
  background: #2d3c50;
  border-radius: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}

@media (max-width: 980px) {
  body { overflow: auto; }
  .app-shell {
    grid-template-columns: 1fr;
    height: auto;
    min-height: 100vh;
  }
  .sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .module-panel {
    height: auto;
  }
  .panel-grid,
  .card.span-2,
  .form-grid,
  .metrics-board {
    grid-template-columns: 1fr;
  }
  .card.span-2 {
    grid-column: auto;
  }
  .topbar {
    flex-direction: column;
  }
}