:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --card: #ffffff;
  --border: #d9e0ea;
  --text: #132033;
  --muted: #5f7087;
  --accent: #1b62f0;
  --danger: #c0372f;
  --radius: 18px;
  --shadow: 0 18px 42px rgba(19, 32, 51, 0.08);
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #ffffff 0, #edf3ff 34%, var(--bg) 100%);
  color: var(--text);
  font:
    16px/1.45 "Segoe UI",
    system-ui,
    sans-serif;
}
.page {
  display: grid;
  gap: 18px;
  min-height: 100vh;
  padding: 18px;
}
.launcher-return-row {
  display: flex;
  justify-content: flex-end;
}
.launcher-return {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--text);
  padding: 8px 12px;
  text-decoration: none;
  box-shadow: var(--shadow);
}
.panel,
.topbar {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
}
.brand {
  display: grid;
  gap: 2px;
}
.brand strong {
  font-size: 18px;
}
.brand span {
  color: var(--muted);
  font-size: 13px;
}
.panel {
  padding: 18px;
}
.intro h1,
.panel h1,
.panel h2,
.panel h3 {
  margin: 0 0 8px;
  line-height: 1.05;
  letter-spacing: -0.03em;
}
.intro p,
.panel p,
.panel li,
.helper {
  color: var(--muted);
}
.grid {
  display: grid;
  gap: 14px;
}
.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.field {
  display: grid;
  gap: 6px;
}
.form-section {
  display: grid;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(248, 251, 255, 0.8);
}
.form-section-header {
  display: grid;
  gap: 4px;
}
.form-section-header h3,
.advanced-section summary {
  margin: 0;
  font-size: 18px;
  line-height: 1.1;
}
.form-section-header p {
  margin: 0;
  color: var(--muted);
}
.advanced-section summary {
  cursor: pointer;
  font-weight: 700;
}
.advanced-section[open] summary {
  margin-bottom: 12px;
}
.field label,
.field span {
  font-weight: 600;
}
input,
textarea,
select,
button {
  font: inherit;
}
input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  padding: 10px 12px;
}
textarea {
  min-height: 96px;
  resize: vertical;
}
button,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 12px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  padding: 10px 14px;
  text-decoration: none;
  cursor: pointer;
}
button.secondary,
.button-link.secondary {
  background: #fff;
  color: var(--text);
  border-color: var(--border);
}
button.danger {
  background: #fff5f4;
  color: var(--danger);
  border-color: #f2c3be;
}
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.status {
  min-height: 24px;
  font-weight: 600;
}
.status.error {
  color: var(--danger);
}
.status.success {
  color: #0f766e;
}
.session-card {
  display: grid;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #f8fbff;
  padding: 14px;
}
.pill-row,
.topbar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.pill {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  padding: 8px 12px;
}
.mode-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.mode-btn,
.mode-link,
.ghost-link {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  padding: 8px 12px;
  text-decoration: none;
}
.mode-btn {
  cursor: pointer;
}
.mode-btn.is-active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}
.workspace {
  display: grid;
  gap: 14px;
}
.minimal-workspace {
  align-items: start;
}
body[data-mode="split-panel"] .minimal-workspace {
  grid-template-columns: minmax(280px, 0.9fr) minmax(420px, 1.25fr);
}
.form-actions {
  align-self: end;
}
#widget-panel[hidden] {
  display: none;
}
.host-modal-backdrop[aria-hidden="true"] {
  display: none;
}
.host-modal-backdrop {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 20, 37, 0.42);
  padding: 16px;
  z-index: 2147482100;
}
.host-modal-card {
  width: min(560px, 92vw);
  border-radius: 18px;
  background: #fff;
  padding: 22px;
  box-shadow: 0 22px 48px rgba(19, 32, 51, 0.24);
}
.host-modal-card .actions {
  margin-top: 14px;
}
.toasts {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 2147482000;
}
@media (max-width: 920px) {
  .grid.two {
    grid-template-columns: 1fr;
  }
  body[data-mode="split-panel"] .minimal-workspace {
    grid-template-columns: 1fr;
  }
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }
}