:root {
  --bg: #f2efe7;
  --ink: #16202a;
  --muted: #617080;
  --panel: rgba(255, 251, 245, 0.88);
  --panel-strong: #fffdf8;
  --line: rgba(22, 32, 42, 0.12);
  --accent: #cc5a2b;
  --accent-soft: #f0ba8d;
  --success: #0f766e;
  --warn: #b45309;
  --shadow: 0 22px 55px rgba(48, 36, 27, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "IBM Plex Sans", "Noto Sans SC", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(204, 90, 43, 0.16), transparent 30%),
    radial-gradient(circle at bottom right, rgba(19, 134, 120, 0.14), transparent 28%),
    linear-gradient(135deg, #f7f4ec 0%, #efe5d6 100%);
}

.shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 270px 1fr;
}

.sidebar {
  padding: 28px 22px;
  border-right: 1px solid var(--line);
  background: rgba(255, 251, 245, 0.8);
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-row {
  display: grid;
  gap: 14px;
}

.brand-copy {
  min-width: 0;
}

.brand-version {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.lang-switch {
  display: inline-flex;
  align-self: flex-start;
  background: rgba(22, 32, 42, 0.05);
  border-radius: 999px;
  padding: 4px;
  gap: 4px;
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 6px 10px;
  cursor: pointer;
  font: inherit;
}

.lang-btn.active {
  background: rgba(204, 90, 43, 0.15);
  color: var(--ink);
  font-weight: 700;
}

.brand-mark {
  width: 52px;
  height: 52px;
  display: block;
  flex: 0 0 auto;
}

.brand h1,
.page-head h2,
.panel-head h3,
.login-card h2 {
  margin: 0;
  font-family: "Iowan Old Style", "Georgia", serif;
}

.page-head p {
  margin: 4px 0 0;
  color: var(--muted);
}

.brand h1 {
  font-size: 22px;
  line-height: 1.1;
}

.session-card,
.panel,
.login-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.session-card {
  padding: 14px;
}

.session-line {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  background: #f2e0cf;
  color: #7b341e;
}

.nav {
  display: grid;
  gap: 10px;
}

.nav-btn,
.ghost-btn,
.accent-btn,
.mini-btn {
  border: 0;
  cursor: pointer;
  border-radius: 14px;
  font: inherit;
  transition: transform 0.18s ease, opacity 0.18s ease, background 0.18s ease;
}

.nav-btn {
  padding: 12px 14px;
  text-align: left;
  background: transparent;
  color: var(--ink);
}

.nav-btn.active,
.nav-btn:hover {
  background: rgba(204, 90, 43, 0.12);
}

.sidebar-foot {
  margin-top: auto;
  display: grid;
  gap: 10px;
}

.ghost-btn,
.mini-btn {
  background: rgba(22, 32, 42, 0.06);
  color: var(--ink);
  padding: 10px 12px;
}

.accent-btn {
  background: linear-gradient(135deg, #cc5a2b, #df7d38);
  color: #fffaf5;
  padding: 10px 14px;
}

.ghost-btn:hover,
.accent-btn:hover,
.mini-btn:hover {
  transform: translateY(-1px);
}

.content {
  padding: 28px;
}

.page-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.page-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  text-align: right;
}

.doc-link {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.meta-text {
  color: var(--muted);
  font-size: 13px;
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 18px;
}

.monitor-runtime-row {
  grid-template-columns: minmax(0, 1fr);
}

.labs-wide-row {
  grid-template-columns: minmax(0, 1fr);
}

.top-grid {
  align-items: start;
}

.panel {
  padding: 18px;
}

.panel.wide {
  grid-column: span 1;
}

.labs-backtest-panel {
  grid-column: 1 / -1;
  width: 100%;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.toolbar,
.stack-form {
  display: grid;
  gap: 10px;
}

.backtest-form-grid,
.backtest-criteria-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.toolbar {
  grid-auto-flow: column;
  grid-auto-columns: minmax(100px, auto);
  align-items: center;
}

.backtest-timeframes {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.inline-check {
  gap: 8px;
}

.compact-head {
  margin-bottom: 0;
}

.compact-head h4 {
  margin: 0;
  font-family: "Iowan Old Style", "Georgia", serif;
  font-size: 18px;
}

.criteria-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(22, 32, 42, 0.03);
  padding: 14px;
  display: grid;
  gap: 10px;
}

.criteria-card label {
  display: grid;
  gap: 6px;
}

.criteria-title {
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 12px;
  background: var(--panel-strong);
  color: var(--ink);
  font: inherit;
}

textarea {
  min-height: 220px;
  resize: vertical;
}

.code-editor,
.code-block {
  font-family: "SFMono-Regular", "Menlo", monospace;
  background: #fffefb;
}

.code-block {
  white-space: pre-wrap;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  min-height: 240px;
}

.short {
  min-height: 160px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.stat-card {
  background: rgba(22, 32, 42, 0.04);
  border-radius: 18px;
  padding: 12px;
}

.stat-card strong {
  display: block;
  font-size: 24px;
  margin-top: 4px;
}

.event-list,
.list-block,
.signal-list {
  display: grid;
  gap: 10px;
}

.event-item,
.list-item,
.signal-card {
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(22, 32, 42, 0.04);
  border: 1px solid transparent;
}

.signal-card {
  cursor: pointer;
}

.signal-card.active {
  border-color: rgba(204, 90, 43, 0.4);
  background: rgba(204, 90, 43, 0.08);
}

.signal-card.up {
  border-left: 4px solid rgba(15, 118, 110, 0.75);
}

.signal-card.down {
  border-left: 4px solid rgba(185, 28, 28, 0.72);
}

.signal-meta-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.signal-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 3px 9px;
  font-size: 11px;
  font-weight: 700;
}

.signal-pill.up {
  background: rgba(15, 118, 110, 0.12);
  color: #0f766e;
}

.signal-pill.down {
  background: rgba(185, 28, 28, 0.12);
  color: #b91c1c;
}

.signal-card .meta-line,
.list-item .meta-line,
.event-item .meta-line {
  color: var(--muted);
  font-size: 12px;
}

.chart-meta {
  margin-bottom: 10px;
}

.chart-toolbar {
  grid-auto-flow: row;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
}

.compact-check {
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel-strong);
}

.chart-frame {
  position: relative;
  width: 100%;
  min-height: 380px;
}

.chart-help {
  margin-top: 8px;
}

.backtest-error {
  color: #b91c1c;
}

.backtest-detail-view {
  display: grid;
  gap: 16px;
}

.backtest-meta-grid,
.backtest-summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.backtest-meta-card,
.backtest-summary-card {
  padding: 14px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(22, 32, 42, 0.03);
}

.backtest-meta-card strong,
.backtest-summary-card strong {
  display: block;
  margin-top: 6px;
  font-size: 22px;
}

.backtest-table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fffdf8;
}

.backtest-filters {
  grid-auto-columns: minmax(140px, auto);
}

.backtest-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 960px;
}

.backtest-table th,
.backtest-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 14px;
}

.backtest-table th {
  background: rgba(204, 90, 43, 0.08);
  color: #7b341e;
}

.backtest-pass,
.backtest-fail {
  font-weight: 700;
}

.backtest-pass {
  color: #0f766e;
}

.backtest-fail {
  color: #b91c1c;
}

.backtest-section-title {
  margin: 0 0 8px;
  font-family: "Iowan Old Style", "Georgia", serif;
  font-size: 18px;
}

.detail-box {
  min-height: 420px;
  border-radius: 18px;
  background: rgba(22, 32, 42, 0.04);
  padding: 14px;
  white-space: pre-wrap;
}

#chartCanvas {
  width: 100%;
  height: 380px;
  display: block;
  background: linear-gradient(180deg, rgba(22, 32, 42, 0.04), rgba(22, 32, 42, 0.01));
  border-radius: 20px;
  border: 1px solid var(--line);
  cursor: grab;
}

#chartCanvas.dragging {
  cursor: grabbing;
}

.login-view {
  min-height: calc(100vh - 56px);
  display: grid;
  place-items: center;
}

.login-grid {
  width: min(920px, 94vw);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  align-items: start;
}

.login-card {
  width: 100%;
  padding: 28px;
  display: grid;
  gap: 14px;
}

.login-card label,
.check-row {
  display: grid;
  gap: 6px;
}

.check-row {
  grid-auto-flow: column;
  justify-content: start;
  align-items: center;
}

.error-text {
  color: #b91c1c;
  min-height: 20px;
  font-size: 13px;
}

.success-text {
  color: var(--success);
  min-height: 20px;
  font-size: 13px;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.hidden {
  display: none !important;
}

@media (max-width: 1080px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .panel-grid {
    grid-template-columns: 1fr;
  }

  .backtest-form-grid,
  .backtest-criteria-grid,
  .backtest-meta-grid,
  .backtest-summary-grid,
  .login-grid {
    grid-template-columns: 1fr;
  }

  .chart-toolbar {
    grid-template-columns: 1fr;
  }

}