:root {
  --bg: #f2efe7;
  --paper: rgba(255, 252, 247, 0.9);
  --ink: #1f2933;
  --muted: #55606d;
  --line: rgba(31, 41, 51, 0.12);
  --accent: #0f766e;
  --accent-2: #d97706;
  --danger: #b42318;
  --connected: #15803d;
  --reconnecting: #b45309;
  --faulted: #b42318;
  --shadow: 0 18px 40px rgba(42, 52, 64, 0.12);
  --radius: 20px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.16), transparent 28rem),
    radial-gradient(circle at top right, rgba(217, 119, 6, 0.18), transparent 24rem),
    var(--bg);
}

.shell-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(31, 41, 51, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 41, 51, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent);
}

.layout {
  position: relative;
  max-width: 1600px;
  margin: 0 auto;
  padding: 32px 24px 40px;
}

.hero,
.panel {
  border: 1px solid var(--line);
  background: var(--paper);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px;
  border-radius: 28px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 700;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1;
}

.subtitle {
  margin-top: 12px;
  max-width: 64rem;
  color: var(--muted);
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  align-items: end;
  gap: 12px;
  min-width: min(420px, 100%);
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr 1.45fr;
  gap: 20px;
  margin-top: 22px;
}

.panel {
  border-radius: var(--radius);
  padding: 20px;
}

.detail {
  min-height: 70vh;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
}

.panel-toolbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 16px;
}

.row-actions {
  display: flex;
  gap: 10px;
}

.session-create,
.command-editor {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.session-create {
  grid-template-columns: 1fr 1fr auto auto;
  align-items: end;
}

.command-editor {
  grid-template-columns: 1.3fr 1.8fr 120px auto;
  align-items: end;
}

.field,
.check {
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}

.field.wide {
  flex: 1;
}

.field.compact {
  width: min(100%, 280px);
}

.field.narrow {
  width: 120px;
}

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

input,
select,
textarea {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(31, 41, 51, 0.16);
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink);
  padding: 12px 14px;
}

textarea {
  resize: vertical;
  font-family: "IBM Plex Mono", "Consolas", monospace;
}

button {
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  cursor: pointer;
  transition: transform 120ms ease, opacity 120ms ease, background 120ms ease;
}

button:hover {
  transform: translateY(-1px);
}

button.primary {
  background: linear-gradient(135deg, var(--accent), #115e59);
  color: #fff;
}

button.ghost,
button.quick {
  background: rgba(31, 41, 51, 0.06);
  color: var(--ink);
}

button.quick {
  padding: 10px 14px;
}

button.danger {
  background: rgba(180, 35, 24, 0.1);
  color: var(--danger);
}

.stack {
  display: grid;
  gap: 12px;
}

.machine-group {
  display: grid;
  gap: 12px;
}

.machine-group-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: end;
  padding: 0 4px;
}

.machine-group-summary {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

.machine-group-summary span {
  border-radius: 999px;
  padding: 6px 10px;
  background: rgba(31, 41, 51, 0.06);
}

.node,
.session,
.command {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.72);
}

.node.active,
.session.active {
  border-color: rgba(15, 118, 110, 0.48);
  box-shadow: inset 0 0 0 1px rgba(15, 118, 110, 0.28);
}

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

.mono,
.command code {
  font-family: "IBM Plex Mono", "Consolas", monospace;
  font-size: 12px;
}

.meta,
.hint {
  color: var(--muted);
  font-size: 12px;
}

.summary {
  border: 1px dashed rgba(31, 41, 51, 0.15);
  border-radius: 18px;
  padding: 16px;
  margin-bottom: 16px;
  background: rgba(255, 255, 255, 0.58);
}

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

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.status-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0;
}

.status-item {
  border-radius: 14px;
  background: rgba(31, 41, 51, 0.05);
  padding: 12px;
}

.status-item span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 4px;
}

.status-item strong {
  font-size: 14px;
}

.summary-item {
  border-radius: 14px;
  background: rgba(31, 41, 51, 0.05);
  padding: 12px;
}

.summary-item strong {
  display: block;
  font-size: 13px;
  margin-bottom: 4px;
}

.summary-list {
  display: grid;
  gap: 8px;
  margin: 14px 0;
}

.summary-list div {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 10px;
  font-size: 13px;
}

.summary-list strong {
  color: var(--muted);
}

.summary-list.compact {
  margin-top: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 700;
}

.badge.connected {
  background: rgba(21, 128, 61, 0.1);
  color: var(--connected);
}

.badge.reconnecting,
.badge.connecting,
.badge.negotiating {
  background: rgba(180, 83, 9, 0.12);
  color: var(--reconnecting);
}

.badge.faulted,
.badge.closed,
.badge.disconnected {
  background: rgba(180, 35, 24, 0.1);
  color: var(--faulted);
}

.command-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.artifact-list,
.command-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

@media (max-width: 1200px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .session-create,
  .command-editor,
  .hero {
    grid-template-columns: 1fr;
    display: grid;
  }

  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .status-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .layout {
    padding: 16px 12px 24px;
  }

  .panel,
  .hero {
    padding: 16px;
    border-radius: 20px;
  }

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

  .status-strip,
  .summary-list div {
    grid-template-columns: 1fr;
  }

  .machine-group-header {
    flex-direction: column;
    align-items: start;
  }
}