:root {
  color: #18181b;
  background: #f4f4f5;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  --background: #f4f4f5;
  --panel: #ffffff;
  --panel-muted: #fafafa;
  --border: #d4d4d8;
  --text: #18181b;
  --muted: #71717a;
  --primary: #0f7ae5;
  --primary-strong: #0969c8;
  --success: #15803d;
  --danger: #b91c1c;
  --radius: 8px;
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; min-height: 100vh; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
button:focus-visible, input:focus-visible, a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
button:disabled { cursor: not-allowed; opacity: 0.55; }

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--background);
}

.login-panel {
  width: min(420px, 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 24px;
}

.server-login,
.login-heading,
.channel-page,
.object-inspector,
.channel-sidebar {
  display: grid;
  gap: 12px;
}

.server-login input,
.search-box input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 10px;
  background: white;
}

.server-login button,
.primary-action {
  border: 1px solid var(--primary);
  border-radius: 6px;
  background: var(--primary);
  color: white;
  padding: 9px 12px;
}

.connection-status,
.login-note,
.form-error,
.channel-header p,
.channel-page small,
.channel-page > p,
.object-inspector > p {
  margin: 0;
  color: var(--muted);
  font-size: 0.875rem;
}

.form-error { color: var(--danger); }

.workbench-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: 64px 1fr;
}

.workspace-topbar {
  display: grid;
  grid-template-columns: 160px minmax(240px, 1fr) auto;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  padding: 0 16px;
}

.brand-mark { font-weight: 700; }
.search-box { display: grid; gap: 4px; min-width: 0; }
.search-box span { color: var(--muted); font-size: 0.75rem; }
.topbar-actions { display: flex; gap: 8px; }
.topbar-actions button { width: 34px; height: 34px; border: 1px solid var(--border); border-radius: 6px; background: var(--panel); }

.workbench-body {
  min-height: 0;
  display: grid;
  grid-template-columns: 76px 280px minmax(0, 1fr) 320px;
}

.project-rail,
.channel-sidebar,
.object-inspector {
  border-right: 1px solid var(--border);
  background: var(--panel);
}

.project-rail {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 12px;
}

.project-rail button {
  min-width: 48px;
  min-height: 48px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--panel-muted);
}

.project-rail button.active,
.channel-group button.active {
  border-color: var(--primary);
  color: var(--primary);
  background: #eff6ff;
}

.project-rail small { color: var(--muted); font-size: 0.6875rem; }

.channel-sidebar,
.object-inspector,
.channel-stage {
  padding: 16px;
  overflow: auto;
}

.channel-group,
.task-list,
.record-list,
.message-list,
.file-list,
.cron-list {
  display: grid;
  gap: 8px;
}

.channel-group button,
.task-card,
.record-row,
.cron-row,
.message-row,
.file-row,
.conversation-summary,
.metric-card {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 10px 12px;
}

.task-card,
.record-row,
.cron-row,
.message-row,
.file-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
}

.task-card.completed {
  color: var(--muted);
  background: var(--panel-muted);
}

.task-check { width: 18px; height: 18px; margin: 3px 0 0; accent-color: var(--primary); }
.task-status { display: inline-block; margin-top: 6px; color: var(--muted); font-size: 0.75rem; }

.channel-sidebar header { display: flex; align-items: start; justify-content: space-between; gap: 12px; }
.channel-sidebar header p,
.channel-sidebar h2,
.channel-sidebar h3 { margin: 0; }
.channel-sidebar h2 { font-size: 1rem; }
.channel-sidebar h3 { color: var(--muted); font-size: 0.8125rem; font-weight: 600; }
.channel-sidebar header button { width: 32px; height: 32px; border: 1px solid var(--border); border-radius: 6px; background: var(--panel-muted); }
.tag-row,
.recent-sessions ul { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.tag-row li { border: 1px solid var(--border); border-radius: 999px; padding: 3px 7px; color: var(--muted); font-size: 0.75rem; }
.channel-group button { display: grid; grid-template-columns: 18px minmax(0, 1fr) auto; gap: 8px; align-items: center; text-align: left; }
.channel-group small { color: var(--muted); }
.channel-icon { color: var(--muted); text-align: center; }
.recent-sessions { display: grid; gap: 8px; }
.recent-sessions li { display: grid; gap: 2px; min-width: 0; padding: 7px 8px; border: 1px solid var(--border); border-radius: 6px; background: var(--panel-muted); }
.recent-sessions span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.8125rem; }
.recent-sessions small { color: var(--muted); font-size: 0.6875rem; }

.channel-stage { background: var(--background); }
.channel-page { align-content: start; }
.channel-header { border-bottom: 1px solid var(--border); padding-bottom: 12px; }
.channel-header h1,
.channel-page h2 { margin: 0; }
.channel-header h1 { font-size: 1.25rem; }
.channel-page h2 { font-size: 0.9375rem; }
.channel-page h2 + p { margin: 4px 0; }
.metric-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; }
.metric-card { display: grid; gap: 4px; text-align: left; }
.metric-card strong { font-size: 1.5rem; }
.metric-card span { color: var(--muted); font-size: 0.8125rem; }
.message-row { grid-template-columns: minmax(0, 1fr) auto; align-items: center; }
.file-row { grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; }
.file-row > span { min-width: 40px; border: 1px solid var(--border); border-radius: 4px; padding: 3px 5px; color: var(--muted); font-size: 0.6875rem; text-align: center; text-transform: uppercase; }
.message-row p,
.cron-row p,
.conversation-summary p { margin: 4px 0; }
.message-row button,
.file-row button,
.task-card > button,
.cron-row button,
.conversation-summary button,
.copy-url-button,
.object-inspector button { border: 1px solid var(--border); border-radius: 6px; background: var(--panel); padding: 6px 9px; }
.session-layout { display: grid; grid-template-columns: minmax(180px, 0.7fr) minmax(0, 1.3fr); gap: 12px; }
.session-list { display: grid; align-content: start; gap: 6px; }
.session-list button { display: grid; gap: 3px; border: 1px solid var(--border); border-radius: 6px; background: var(--panel); padding: 9px; text-align: left; }
.session-list button.active { border-color: var(--primary); background: #eff6ff; }
.session-list small { color: var(--muted); }
.conversation-summary { align-content: start; }
.custom-link { color: var(--primary-strong); font-weight: 600; width: max-content; }
.copy-url-button { width: max-content; }
.copy-feedback { margin: 0; color: var(--success); font-size: 0.8125rem; }

.object-inspector {
  align-content: start;
  grid-auto-rows: min-content;
}

.inspector-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-content: start;
  grid-auto-rows: min-content;
  gap: 4px;
}

.inspector-tabs button[aria-pressed='true'] {
  border-color: var(--primary);
  color: var(--primary);
}

@media (max-width: 920px) {
  .workspace-topbar {
    grid-template-columns: minmax(0, 1fr) auto;
    height: auto;
    padding: 12px;
  }

  .search-box { grid-column: 1 / -1; grid-row: 2; }
  .topbar-actions { grid-column: 2; grid-row: 1; }

  .workbench-shell {
    grid-template-rows: auto 1fr;
  }

  .workbench-body {
    grid-template-columns: 1fr;
    align-content: start;
  }

  .project-rail,
  .channel-sidebar,
  .object-inspector {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .project-rail {
    grid-template-columns: none;
    grid-auto-flow: column;
    grid-auto-columns: 48px;
    align-items: center;
    max-height: 76px;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 10px 12px;
  }

  .project-rail button { min-width: 48px; min-height: 48px; }

  .channel-sidebar {
    align-content: start;
    max-height: 220px;
    padding: 12px;
  }

  .channel-group,
  .tag-row,
  .recent-sessions ul {
    grid-auto-flow: column;
    grid-auto-columns: minmax(132px, max-content);
    grid-template-columns: none;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .channel-group button { min-width: 160px; }
  .recent-sessions li { min-width: 160px; }
  .channel-stage { max-height: 36vh; overflow: auto; }
  .object-inspector { max-height: 288px; overflow: auto; }
  .session-layout { grid-template-columns: 1fr; }
}