:root {
  --bg: #f6f7f9; --card: #fff; --ink: #1d2330; --muted: #6b7385; --line: #e2e5eb; --accent: #2f5bd3;
  --good: #1f8a4c; --goodbg: #e8f6ee; --bad: #c0362c; --badbg: #fdecea; --warn: #9a6400; --warnbg: #fff6e0;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--ink); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0 0 10px; }
h3 { font-size: 15px; margin: 14px 0 8px; }
code, pre, .mono { font-family: var(--mono); font-size: 12.5px; }
pre { margin: 0; }
pre.wrap { white-space: pre-wrap; word-break: break-word; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.error, .failc { color: var(--bad); }
.warn { color: var(--warn); }
.pass { color: var(--good); }
.nowrap { white-space: nowrap; }
.pad { padding: 18px 24px; }
.narrow { max-width: 860px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.between { justify-content: space-between; align-items: flex-start; }
.center { display: flex; justify-content: center; padding-top: 10vh; }

/* header */
.top { display: flex; align-items: center; gap: 24px; padding: 10px 24px; background: #1d2330; color: #fff; }
.brand { color: #fff; font-weight: 600; }
.brand span { color: #9aa6c4; font-weight: 400; margin-left: 4px; }
#nav { display: flex; gap: 6px; align-items: center; flex: 1; }
#nav a { color: #c9d1e6; padding: 4px 10px; border-radius: 6px; }
#nav a.on, #nav a:hover { background: #313a50; color: #fff; text-decoration: none; }
#nav .who { margin-left: auto; color: #9aa6c4; }

/* cards, forms, buttons */
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; margin: 12px 0; }
.card.good { border-color: #9fd6b5; background: var(--goodbg); }
.card.bad { border-color: #f0b4ae; background: var(--badbg); }
.login { width: 360px; display: flex; flex-direction: column; gap: 6px; }
.login .btn { margin-top: 10px; }
label { font-weight: 500; display: block; margin-top: 8px; }
label.check, label.chipbox, label.pitem, label.lvl { font-weight: 400; }
input, select, textarea { font: inherit; padding: 6px 8px; border: 1px solid #c8cdd8; border-radius: 6px; background: #fff; color: var(--ink); }
input[type=checkbox], input[type=radio] { padding: 0; }
textarea { width: 100%; font-family: inherit; }
.form input:not([type=checkbox]), .form select { width: 100%; }
.form .cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.plist { border: 1px solid var(--line); border-radius: 8px; padding: 4px 0; max-height: 340px; overflow: auto; }
.pitem { display: flex; gap: 10px; align-items: baseline; padding: 6px 12px; margin: 0; cursor: pointer; }
.pitem:hover { background: #f1f4fa; }
.btn { font: inherit; padding: 6px 14px; border-radius: 6px; border: 1px solid #c8cdd8; background: #fff; color: var(--ink); cursor: pointer; display: inline-block; }
.btn:hover:not(:disabled) { background: #f1f4fa; text-decoration: none; }
.btn:disabled { opacity: .45; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover:not(:disabled) { background: #2449b0; }
.btn.danger { background: var(--bad); border-color: var(--bad); color: #fff; }
.btn.danger.ghost { background: #fff; color: var(--bad); }
.btn.ghost { background: transparent; border-color: transparent; color: inherit; }
#nav .btn.ghost { color: #c9d1e6; border-color: #4a5470; }
.btn.small { padding: 3px 9px; font-size: 12.5px; }
.btn.tiny { padding: 0 6px; font-size: 11px; margin-left: 6px; }
.num { width: 64px; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: 12px 0; }
.toolbar input[type=search] { min-width: 220px; }

/* tables */
table.grid { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.grid th, .grid td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.grid th { background: #f1f3f7; font-weight: 600; font-size: 12.5px; color: #3c4456; }
.grid tr.click { cursor: pointer; }
.grid tr.click:hover td { background: #f6f8fd; }
.grid td.detail { max-width: 520px; white-space: pre-wrap; word-break: break-word; font-size: 12px; color: #3c4456; }
.grid td.detail details { margin: 0; }
.grid td.detail summary { cursor: pointer; }
.grid td.detail pre { max-height: 360px; overflow: auto; }
td.pad { padding: 18px; }

.badge { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 12px; font-weight: 600; background: #eceff4; color: #3c4456; vertical-align: middle; }
.badge.live { background: var(--goodbg); color: var(--good); }
.badge.waiting { background: var(--warnbg); color: var(--warn); }
.badge.scored { background: #e7eefc; color: #2449b0; }
.badge.failed, .badge.unreadable { background: var(--badbg); color: var(--bad); }

/* session page */
.shead { margin: 4px 0 8px; }
.shead h1 .badge { font-size: 13px; }
.facts { display: grid; gap: 4px; min-width: 300px; }
.k { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .03em; margin-right: 6px; }
.actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: 10px 0; }
.actions .group { display: inline-flex; gap: 6px; align-items: center; padding-right: 10px; border-right: 1px solid var(--line); }
.banner { display: flex; gap: 10px; align-items: center; background: var(--warnbg); border: 1px solid #f0d58f; border-radius: 8px; padding: 8px 12px; margin: 8px 0; }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); margin-top: 12px; }
.tabs a { padding: 7px 14px; border-radius: 6px 6px 0 0; color: var(--muted); }
.tabs a.on { background: var(--card); border: 1px solid var(--line); border-bottom-color: var(--card); color: var(--ink); margin-bottom: -1px; }
.tabbody { padding-top: 4px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; margin-top: 12px; }
.cards .card { margin: 0; }
.stat .v { font-size: 20px; font-weight: 600; margin: 2px 0; }
.stat.bad { border-color: #f0b4ae; background: var(--badbg); }
.stat.warnc { border-color: #f0d58f; background: var(--warnbg); }
.stat.goodc { border-color: #9fd6b5; }
.huge { font-size: 28px; font-weight: 700; }
dl.kv { display: grid; grid-template-columns: 220px 1fr; gap: 6px 16px; margin: 0; }
dl.kv dt { color: var(--muted); }
dl.kv dd { margin: 0; word-break: break-word; }
.kvline { display: flex; gap: 18px; flex-wrap: wrap; }
.secret { display: flex; align-items: center; gap: 10px; margin: 6px 0; }
.secret code { background: #fff; border: 1px solid var(--line); border-radius: 6px; padding: 4px 8px; }
code.big { font-size: 15px; }

/* score */
.problem h2 .muted { font-weight: 400; }
.bars { display: grid; gap: 6px; margin: 8px 0 12px; max-width: 760px; }
.barrow { display: grid; grid-template-columns: 220px 1fr 110px; gap: 10px; align-items: center; }
.bar { height: 12px; background: #eceff4; border-radius: 6px; overflow: hidden; }
.fill { height: 100%; width: 0; background: var(--accent); }
.fill.starter { background: #9aa3b5; }
.fill.ai { background: #c98a1b; }
.bv { text-align: right; }
.combined { border: 1px dashed #b9c3da; border-radius: 8px; padding: 10px 14px; margin: 10px 0 14px; background: #fafbfe; }
table.checks td:first-child { white-space: nowrap; }
.rubric { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 4px; }
.rubric-table td { width: 28%; }
.rubric-table th[scope=row] { width: 16%; font-weight: 600; background: #fafbfc; }
label.lvl { display: flex; gap: 6px; align-items: flex-start; margin: 0; cursor: pointer; }
label.lvl strong { min-width: 10px; }
.rubric textarea { margin-bottom: 8px; }

/* timeline */
.chip { display: inline-block; padding: 0 7px; border-radius: 9px; font-size: 11.5px; font-weight: 600; }
.chip.tp { background: var(--goodbg); color: var(--good); }
.chip.cw { background: var(--warnbg); color: var(--warn); }
.chipbox { display: inline-flex; gap: 4px; align-items: center; margin: 0; }
.timeline td.evt { white-space: pre-wrap; word-break: break-word; font-family: var(--mono); font-size: 12px; }
.timeline tr.src-operator td, .timeline tr.src-session td { background: #f6f8fd; }

/* transcript */
.pager { display: flex; gap: 8px; align-items: center; margin: 10px 0; }
.call .callhead { margin-bottom: 4px; }
.call.refused { background: var(--badbg); border-color: #f0b4ae; }
.cols2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 8px; }
.cols2 > div { min-width: 0; }
.msg { border-left: 3px solid var(--line); padding-left: 8px; margin: 6px 0; }
.msg.user { border-left-color: var(--accent); }
.msg .role { font-size: 11px; color: var(--muted); text-transform: uppercase; }
.blk { background: #f7f8fa; border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px; margin: 4px 0; max-height: 420px; overflow: auto; }
.blk pre { font-size: 12px; }
.blk.thinking { background: #f5f3fb; }
.blk.tool { background: #eef4ff; }
.blk.result { background: #f2f7f2; }
.blk.err { background: var(--badbg); }

/* code */
.split { display: grid; grid-template-columns: minmax(240px, 320px) 1fr; gap: 12px; align-items: start; }
.tree { max-height: 70vh; overflow: auto; font-family: var(--mono); font-size: 12.5px; margin: 8px 0; }
.te { padding: 1px 4px; white-space: nowrap; }
.te.dir { color: #3c4456; font-weight: 600; }
.viewer { min-width: 0; margin: 8px 0; }
pre.code, pre.diff { background: #fbfbfc; border: 1px solid var(--line); border-radius: 6px; padding: 10px; overflow: auto; max-height: 75vh; margin-top: 8px; }
pre.diff .add { color: #136c37; background: #e9f7ee; display: inline; }
pre.diff .del { color: #a3271e; background: #fdeeed; display: inline; }
pre.diff .hunk { color: #6243b5; }
pre.diff .fh { color: #1d2330; font-weight: 700; }

/* rendered markdown (always built from text nodes) */
.md { max-width: 900px; }
.md h3, .md h4, .md h5, .md h6 { margin: 14px 0 6px; }
.md p { margin: 6px 0; }
.md code { background: #f1f3f7; padding: 0 4px; border-radius: 4px; }
.md blockquote { border-left: 3px solid var(--line); margin: 6px 0; padding-left: 10px; color: var(--muted); }
.md-table { margin: 8px 0; }
.review { background: #fffdf6; border: 1px solid #f0e3bd; border-radius: 6px; padding: 6px 12px; }
details { margin: 8px 0; }
summary { cursor: pointer; color: var(--accent); }

/* audit */
table.audit td.detail { font-family: var(--mono); }

/* overlays */
.overlay { position: fixed; inset: 0; background: rgba(20, 24, 33, .45); display: flex; align-items: flex-start; justify-content: center; padding-top: 12vh; z-index: 20; }
.modal { background: #fff; border-radius: 12px; padding: 18px 20px; width: min(640px, 92vw); max-height: 80vh; overflow: auto; box-shadow: 0 12px 40px rgba(0, 0, 0, .25); }
.modal input { width: 100%; }
.modal-buttons { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
#toasts { position: fixed; right: 18px; bottom: 18px; display: flex; flex-direction: column; gap: 8px; z-index: 30; }
.toast { background: #1d2330; color: #fff; padding: 9px 14px; border-radius: 8px; max-width: 460px; white-space: pre-wrap; word-break: break-word; box-shadow: 0 6px 20px rgba(0, 0, 0, .2); }
.toast.error { background: var(--bad); }
.toast.ok { background: var(--good); }
.spinner { width: 18px; height: 18px; border: 3px solid #d6dbe6; border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; display: inline-block; vertical-align: middle; }
.spinner.small { width: 14px; height: 14px; border-width: 2px; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 900px) {
  .form .cols, .cols2, .split { grid-template-columns: 1fr; }
  dl.kv { grid-template-columns: 1fr; }
  .barrow { grid-template-columns: 140px 1fr 90px; }
}