:root {
  color-scheme: light;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --text: #17202d;
  --muted: #667085;
  --line: #dce1e8;
  --line-strong: #c7ced8;
  --primary: #1769e0;
  --primary-soft: #eaf2fd;
  --success: #16845b;
  --success-soft: #e8f6f0;
  --warning: #a15c00;
  --warning-soft: #fff3dd;
  --danger: #c93c3c;
  --danger-soft: #fceaea;
  --sidebar: #202834;
  --sidebar-muted: #aeb8c6;
  --shadow: 0 8px 24px rgba(25, 33, 45, .07);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body { overflow-x: hidden; background: var(--bg); color: var(--text); font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif; font-size: 14px; }
button, input, select, textarea { font: inherit; }
button { letter-spacing: 0; }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 232px minmax(0, 1fr); }
.sidebar { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; background: var(--sidebar); color: #fff; padding: 18px 12px; }
.brand { display: flex; align-items: center; gap: 11px; padding: 4px 8px 20px; border-bottom: 1px solid rgba(255,255,255,.1); }
.brand-mark { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 6px; background: #fff; color: var(--sidebar); font-weight: 800; }
.brand strong, .brand small { display: block; letter-spacing: 0; }
.brand strong { font-size: 16px; }
.brand small { color: var(--sidebar-muted); margin-top: 2px; }
.nav-list { display: grid; gap: 3px; margin-top: 16px; }
.nav-item { border: 0; border-radius: 5px; padding: 10px 12px; background: transparent; color: #e9edf2; text-align: left; cursor: pointer; }
.nav-item span, .nav-item small { display: block; }
.nav-item span { font-weight: 650; }
.nav-item small { color: var(--sidebar-muted); margin-top: 2px; font-size: 12px; }
.nav-item:hover { background: rgba(255,255,255,.07); }
.nav-item.active { background: #fff; color: var(--text); }
.nav-item.active small { color: var(--muted); }
.collection-link { margin-top: auto; padding: 10px 12px; border: 1px solid rgba(255,255,255,.22); border-radius: 5px; color: #fff; text-decoration: none; text-align: center; font-weight: 650; }
.collection-link:hover { background: rgba(255,255,255,.08); }

.workspace, .main-view, .metric-grid, .metric { min-width: 0; }
.topbar { height: 76px; position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 12px 28px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); }
.topbar h1 { margin: 0; font-size: 20px; letter-spacing: 0; }
.topbar p { margin: 4px 0 0; color: var(--muted); }
.system-strip { display: flex; gap: 8px; align-items: center; }
.system-chip { white-space: nowrap; padding: 6px 9px; border-radius: 5px; color: var(--success); background: var(--success-soft); font-size: 12px; font-weight: 650; }
.system-chip.neutral { color: #495667; background: #eef1f5; }
.icon-button { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 5px; background: #fff; color: var(--text); cursor: pointer; font-size: 20px; }
.icon-button:hover { border-color: var(--primary); color: var(--primary); }
.main-view { padding: 24px 28px 48px; max-width: 1500px; margin: 0 auto; }
.loading, .empty-state { padding: 56px 16px; text-align: center; color: var(--muted); }

.page-toolbar { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.page-toolbar h2 { margin: 0 0 5px; font-size: 18px; }
.page-toolbar p { margin: 0; color: var(--muted); }
.toolbar-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.button { border: 1px solid transparent; border-radius: 5px; padding: 8px 13px; cursor: pointer; font-weight: 650; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: 6px; }
.button.primary { background: var(--primary); color: #fff; }
.button.secondary { background: #fff; color: var(--text); border-color: var(--line-strong); }
.button.danger { background: #fff; color: var(--danger); border-color: #efb9b9; }
.button.success { background: var(--success); color: #fff; }
.button.small { padding: 6px 9px; font-size: 12px; }
.button:disabled { opacity: .45; cursor: not-allowed; }

.metric-grid { display: grid; grid-template-columns: repeat(5, minmax(150px, 1fr)); gap: 10px; margin-bottom: 22px; }
.metric { min-height: 94px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); padding: 14px; }
.metric span { display: block; color: var(--muted); }
.metric strong { display: block; margin-top: 8px; font-size: 24px; letter-spacing: 0; overflow-wrap: anywhere; }
.metric small { display: block; margin-top: 3px; color: var(--muted); }
.content-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(300px, .8fr); gap: 18px; }
.section { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 18px 0; margin-bottom: 18px; }
.section.framed { border: 1px solid var(--line); border-radius: 6px; padding: 18px; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.section-head h3 { margin: 0; font-size: 15px; }
.section-head p { margin: 3px 0 0; color: var(--muted); }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { padding: 11px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
th { background: var(--surface-soft); color: #475467; font-size: 12px; font-weight: 700; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr.clickable { cursor: pointer; }
tbody tr.clickable:hover { background: #f7faff; }
.primary-cell strong, .primary-cell small { display: block; }
.primary-cell small { color: var(--muted); margin-top: 3px; }
.mono { font-family: "Cascadia Code", Consolas, monospace; font-size: 12px; }
.muted { color: var(--muted); }
.row-actions { display: flex; align-items: center; gap: 6px; white-space: nowrap; }

.badge { display: inline-flex; align-items: center; min-height: 23px; padding: 2px 8px; border-radius: 4px; font-size: 12px; font-weight: 700; background: #edf1f5; color: #495667; }
.badge.success, .badge.completed, .badge.ready, .badge.validated, .badge.released { background: var(--success-soft); color: var(--success); }
.badge.warning, .badge.running, .badge.candidate, .badge.review { background: var(--warning-soft); color: var(--warning); }
.badge.danger, .badge.failed { background: var(--danger-soft); color: var(--danger); }
.progress { width: 150px; height: 6px; border-radius: 3px; background: #e7ebf0; overflow: hidden; }
.progress > span { display: block; height: 100%; background: var(--primary); }
.training-config-band { display: grid; grid-template-columns: repeat(6, minmax(110px, 1fr)) auto; align-items: end; gap: 0; margin-bottom: 18px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); overflow: hidden; }
.training-config-band > div { min-height: 68px; padding: 12px; border-right: 1px solid var(--line); }
.training-config-band > div span, .training-config-band > div strong { display: block; }
.training-config-band > div span { color: var(--muted); font-size: 12px; }
.training-config-band > div strong { margin-top: 6px; overflow-wrap: anywhere; }
.training-config-band > button { margin: 12px; white-space: nowrap; }

.detail-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.detail-head h2 { margin: 0 0 5px; font-size: 20px; }
.detail-head p { margin: 0; color: var(--muted); }
.back-button { border: 0; background: transparent; color: var(--primary); padding: 0 0 10px; cursor: pointer; font-weight: 650; }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); margin-bottom: 16px; }
.tab { border: 0; border-bottom: 2px solid transparent; background: transparent; padding: 9px 12px; color: var(--muted); cursor: pointer; text-decoration: none; }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 700; }
.dataset-tabs { margin-top: -8px; margin-bottom: 22px; }
.parameter small { display: block; margin-top: 3px; color: var(--muted); }
.split-meta { max-width: 720px; margin-bottom: 16px; }
.split-table { margin-top: 8px; }
.split-input { width: 90px; border: 1px solid var(--line-strong); border-radius: 5px; padding: 7px 8px; }
.split-table tr.invalid { background: var(--danger-soft); }
.split-table tr.invalid [data-remaining] { color: var(--danger); font-weight: 700; }
.split-summary { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-top: 14px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface-soft); }
.split-summary span { color: var(--muted); }
.split-summary strong { color: var(--text); margin-left: 4px; }
.warning-text { display: block; margin-top: 3px; color: var(--warning); font-size: 12px; }
.parameter-list { display: grid; grid-template-columns: repeat(3, minmax(160px, 1fr)); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.parameter { padding: 12px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.parameter span, .parameter strong { display: block; }
.parameter span { color: var(--muted); font-size: 12px; }
.parameter strong { margin-top: 5px; overflow-wrap: anywhere; }
.log-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.log-view { min-height: 420px; max-height: 62vh; overflow: auto; margin: 0; padding: 14px; border-radius: 5px; background: #151b24; color: #dce6f2; font: 12px/1.55 "Cascadia Code", Consolas, monospace; white-space: pre-wrap; }
.chart-wrap { height: 240px; border: 1px solid var(--line); border-radius: 6px; padding: 10px; }
#lossChart { width: 100%; height: 100%; }

.comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.comparison-panel { border: 1px solid var(--line); border-radius: 6px; padding: 16px; }
.comparison-panel h3 { margin: 0 0 12px; }
.score-row { display: flex; justify-content: space-between; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--line); }
.score-row:last-child { border-bottom: 0; }
.score-row span { color: var(--muted); }
.score-row strong.good { color: var(--success); }

.deploy-band { display: grid; grid-template-columns: 130px 1fr auto; align-items: center; gap: 18px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.deploy-band:last-child { border-bottom: 0; }
.deploy-env strong, .deploy-env small { display: block; }
.deploy-env small { margin-top: 4px; color: var(--muted); }
.select-inline { min-width: 220px; border: 1px solid var(--line-strong); border-radius: 5px; padding: 7px 9px; background: #fff; }
.notice { padding: 11px 13px; border-left: 3px solid var(--warning); background: var(--warning-soft); color: #724400; margin-bottom: 16px; }
.runtime-test { display: grid; grid-template-columns: 180px minmax(260px, 1fr) auto; align-items: end; gap: 12px; }
.result-view { min-height: 132px; margin: 14px 0 0; padding: 13px; border: 1px solid var(--line); border-radius: 5px; background: var(--surface-soft); white-space: pre-wrap; overflow-wrap: anywhere; }
.compact-log { min-height: 240px; max-height: 420px; }

.dialog { width: min(680px, calc(100vw - 28px)); border: 0; border-radius: 7px; padding: 0; box-shadow: var(--shadow); }
.dialog::backdrop { background: rgba(15, 23, 34, .48); }
.dialog form { padding: 20px; }
.dialog-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.dialog-head h2 { margin: 0; font-size: 19px; }
.dialog-head p { margin: 4px 0 0; color: var(--muted); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
.form-grid.compact { margin-top: 13px; }
.field { display: grid; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field span { font-weight: 650; }
.field input, .field select { width: 100%; border: 1px solid var(--line-strong); border-radius: 5px; padding: 9px 10px; background: #fff; color: var(--text); }
.advanced { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--line); }
.advanced summary { cursor: pointer; font-weight: 700; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; }
.toast { position: fixed; right: 22px; bottom: 22px; z-index: 30; max-width: 420px; padding: 11px 14px; border-radius: 5px; background: #202834; color: #fff; opacity: 0; transform: translateY(8px); pointer-events: none; transition: .2s ease; }
.toast.show { opacity: 1; transform: translateY(0); }
.toast.error { background: var(--danger); }

@media (max-width: 1080px) {
  .metric-grid { grid-template-columns: repeat(3, 1fr); }
  .content-grid { grid-template-columns: 1fr; }
  .parameter-list { grid-template-columns: repeat(2, 1fr); }
  .training-config-band { grid-template-columns: repeat(3, 1fr); }
  .training-config-band > button { align-self: center; }
}
@media (max-width: 760px) {
  .app-shell { display: block; }
  .sidebar { position: static; height: auto; padding: 12px; }
  .brand { padding-bottom: 12px; }
  .nav-list { display: flex; overflow-x: auto; margin-top: 10px; padding-bottom: 4px; }
  .nav-item { flex: 0 0 auto; min-width: 96px; text-align: center; }
  .nav-item small { display: none; }
  .collection-link { display: none; }
  .topbar { position: static; height: auto; padding: 14px 16px; align-items: flex-start; }
  .system-strip { flex-wrap: wrap; justify-content: flex-end; }
  .system-chip { display: none; }
  .main-view { padding: 18px 14px 36px; }
  .metric-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .metric strong { font-size: 20px; }
  .page-toolbar, .detail-head { align-items: stretch; flex-direction: column; }
  .form-grid, .comparison { grid-template-columns: 1fr; }
  .field.full { grid-column: auto; }
  .parameter-list { grid-template-columns: 1fr; }
  .training-config-band, .runtime-test { grid-template-columns: 1fr; }
  .training-config-band > div { border-right: 0; border-bottom: 1px solid var(--line); }
  .deploy-band { grid-template-columns: 1fr; gap: 8px; }
}