:root {
  color-scheme: light dark;
  --bg: #f4f4f1;
  --card: #ffffff;
  --line: rgba(0, 0, 0, 0.13);
  --fg: #171717;
  --mut: #6b6b6b;
  --ter: #9a9a92;
  --live: #1d9e75;
  --bad: #c2452f;
  --warn: #a9730f;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --sans: -apple-system, system-ui, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0e0e;
    --card: #171717;
    --line: rgba(255, 255, 255, 0.12);
    --fg: #ededed;
    --mut: #8f8f8f;
    --ter: #67675f;
    --live: #5dcaa5;
    --bad: #f0997b;
    --warn: #efb060;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  line-height: 1.5;
}

/* Topbar ----------------------------------------------------------------- */
.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 18px 22px;
  border-bottom: 0.5px solid var(--line);
}

.brand .logo {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 1.2rem;
  letter-spacing: 0.28em;
  text-transform: lowercase;
}

.brand .subtitle {
  margin-left: 0.7rem;
  color: var(--ter);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.session {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 0.7rem;
}

.session label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ter);
}

.session input {
  min-width: 12rem;
  padding: 0.5rem 0.65rem;
  border: 0.5px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 0.82rem;
}

.session input:focus {
  outline: none;
  border-color: var(--ter);
}

.session button {
  padding: 0.5rem 1rem;
  border: 0.5px solid var(--live);
  border-radius: 8px;
  background: transparent;
  color: var(--live);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.15s ease;
}

.session button:hover { background: color-mix(in srgb, var(--live) 12%, transparent); }

.pill {
  padding: 0.32rem 0.7rem;
  border-radius: 999px;
  border: 0.5px solid var(--line);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ter);
}

.pill.ok { border-color: transparent; background: color-mix(in srgb, var(--live) 16%, transparent); color: var(--live); }
.pill.bad { border-color: transparent; background: color-mix(in srgb, var(--bad) 16%, transparent); color: var(--bad); }

/* Tabs ------------------------------------------------------------------- */
.tabs {
  display: flex;
  gap: 1.4rem;
  padding: 0 22px;
  border-bottom: 0.5px solid var(--line);
}

.tab {
  border: none;
  background: transparent;
  color: var(--ter);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 14px 2px;
  margin-bottom: -0.5px;
  border-bottom: 1.5px solid transparent;
  cursor: pointer;
  transition: color 0.15s ease;
}

.tab:hover { color: var(--mut); }
.tab.active { color: var(--fg); border-bottom-color: var(--live); }

/* Panels ----------------------------------------------------------------- */
main { padding: 22px; max-width: 1100px; }

.panel { display: none; }
.panel.active { display: block; }

.panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.1rem;
}

.panel-head h2 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 500;
  flex: 1;
}

.panel-head button {
  padding: 0.42rem 0.85rem;
  border: 0.5px solid var(--line);
  border-radius: 8px;
  background: transparent;
  color: var(--mut);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.panel-head button:hover { border-color: var(--ter); color: var(--fg); }

.split {
  display: grid;
  grid-template-columns: minmax(220px, 340px) 1fr;
  gap: 1rem;
  min-height: 440px;
}

@media (max-width: 800px) {
  .split { grid-template-columns: 1fr; }
}

/* Cards ------------------------------------------------------------------ */
.card-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 560px;
  overflow: auto;
}

.card {
  border: 0.5px solid var(--line);
  border-radius: 12px;
  padding: 13px 15px;
  background: var(--card);
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.card:hover { border-color: var(--ter); }
.card.selected { border-color: transparent; box-shadow: 0 0 0 1.5px var(--live); }

.card .title {
  font-weight: 500;
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
}

.card .meta {
  font-size: 0.74rem;
  color: var(--ter);
  font-family: var(--mono);
  line-height: 1.6;
}

.card .meta.failed {
  color: var(--warn);
  overflow-wrap: anywhere;
}

.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.18rem 0.5rem;
  border-radius: 5px;
  margin-right: 0.4rem;
  color: var(--ter);
  background: color-mix(in srgb, var(--ter) 14%, transparent);
}

.badge.ok { color: var(--live); background: color-mix(in srgb, var(--live) 15%, transparent); }
.badge.bad { color: var(--bad); background: color-mix(in srgb, var(--bad) 15%, transparent); }
.badge.neutral { color: var(--mut); background: color-mix(in srgb, var(--mut) 13%, transparent); }

/* Detail panes ----------------------------------------------------------- */
.detail-pane {
  border: 0.5px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  background: var(--card);
  overflow: auto;
  max-height: 560px;
}

.detail-pane h3 { margin: 0 0 0.5rem; font-weight: 500; font-size: 1.05rem; }
.detail-pane .meta { font-family: var(--mono); font-size: 0.76rem; color: var(--ter); margin: 0.25rem 0; }
.detail-pane a { color: var(--live); text-decoration: none; }
.detail-pane a:hover { text-decoration: underline; }

.detail-pane.code {
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--mut);
}

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

.breadcrumb {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--mut);
  letter-spacing: 0.02em;
}

.steps { margin-top: 0.6rem; }

.step {
  border-top: 0.5px solid var(--line);
  padding: 0.7rem 0;
}

.step:first-child { border-top: none; }

.step .tool {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ter);
  margin-top: 0.2rem;
}

.empty {
  padding: 2.2rem;
  text-align: center;
  color: var(--ter);
  font-family: var(--mono);
  font-size: 0.78rem;
}