/* App shell: 480 px centred column, header, panels, bottom tab bar. Uses only the tokens in tokens.css. */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--surface-base);
  color: var(--ink-primary);
  font: var(--text-body);
}
h1, h2, p { margin: 0; }
.column {
  max-width: var(--column-max);
  margin: 0 auto;
  padding: env(safe-area-inset-top, 0px) max(var(--margin-mobile), env(safe-area-inset-right, 0px))
    calc(var(--tap-min) + var(--space-5) * 2 + env(safe-area-inset-bottom, 0px)) max(var(--margin-mobile), env(safe-area-inset-left, 0px));
}
.app-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-1) var(--space-2);
  min-height: var(--tap-min);
  padding: var(--space-3) 0;
}
.title { font: var(--text-title); min-width: 0; overflow-wrap: anywhere; }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.section { font: var(--text-section); letter-spacing: 0.02em; margin-bottom: var(--space-2); }
.meta { font: var(--text-meta); color: var(--ink-secondary); }
.content { display: flex; flex-direction: column; gap: var(--space-3); }
.panel {
  background: var(--surface-raised);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Stamp or chip plus the menu: one group at the right, also when the header wraps, so the panel fits. */
.header-end { display: flex; align-items: center; margin-left: auto; }
.menu { position: relative; }
.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--tap-min);
  height: var(--tap-min);
  border-radius: var(--radius-md);
  color: var(--ink-primary);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  list-style: none;
}
.menu-toggle::-webkit-details-marker { display: none; }
.menu-panel {
  position: absolute;
  right: 0;
  top: 100%;
  z-index: 10;
  min-width: 160px;
  margin: 0;
  background: var(--surface-raised);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
}
.menu-item {
  display: block;
  width: 100%;
  min-height: var(--tap-min);
  padding: var(--space-3) var(--space-4);
  background: none;
  border: 0;
  border-radius: var(--radius-md);
  color: var(--ink-primary);
  font: var(--text-body);
  text-align: left;
  cursor: pointer;
}

.tab-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--surface-sunken);
  border-top: 1px solid var(--border-hairline);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
.tab-bar-inner { display: flex; max-width: var(--column-max); margin: 0 auto; }
.tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-height: calc(var(--tap-min) + var(--space-3));
  color: var(--ink-secondary);
  font: var(--text-meta);
  text-decoration: none;
}
.tab.active { color: var(--accent-text); }
.tab-icon { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.login { padding-top: calc(var(--space-5) + env(safe-area-inset-top, 0px)); padding-bottom: var(--space-5); display: flex; flex-direction: column; gap: var(--space-5); }
.login-form { display: flex; flex-direction: column; gap: var(--space-3); }
.field-label { font: var(--text-section); }
.field {
  min-height: var(--tap-min);
  padding: var(--space-2) var(--space-3);
  background: var(--surface-sunken);
  color: var(--ink-primary);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  font: var(--text-body);
}
.error { font: var(--text-body); color: var(--warning); }
.button-primary {
  min-height: var(--tap-min);
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: var(--radius-md);
  font: 600 0.875rem/1.25rem var(--font-ui);
  cursor: pointer;
}

/* Dashboard (Story 6.2): status card, signal row, news row, badge, chip, skeleton, dimmed. */
.num { font-family: var(--font-numeric); font-variant-numeric: tabular-nums; }
.updated { margin-left: auto; margin-right: var(--space-2); }
.dash { display: flex; flex-direction: column; gap: var(--space-3); }
.status-card {
  background: var(--surface-raised);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.status-head { display: flex; align-items: center; gap: var(--space-2); font: var(--text-title); }
.status-label { min-width: 0; overflow-wrap: anywhere; }
.status-dot { width: 8px; height: 8px; flex: none; border-radius: var(--radius-full); background: var(--ink-secondary); }
.status-running .status-dot { background: var(--buy); }
.status-stale { border-color: var(--warning); }
.status-stale .status-dot { background: var(--warning); }
.status-down { border-color: var(--sell); }
.status-down .status-dot { background: var(--sell); }
.status-closed, .status-error { border-color: var(--border-hairline); }
.status-closed .status-dot, .status-error .status-dot { background: var(--ink-secondary); }
.key-line { margin-top: var(--space-1); }
.key-warn { color: var(--warning); }

.section-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; column-gap: var(--space-2); }
.link-all {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-min);
  color: var(--accent-text);
  font: var(--text-body);
  text-decoration: none;
}
.rows { list-style: none; margin: 0; padding: 0; }
.signal-row { padding: var(--space-3) 0; border-top: 1px solid var(--border-hairline); }
.rows > .signal-row:first-child { border-top: 0; padding-top: 0; }
.signal-main { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; }
.entry { font: var(--text-figure); margin-left: auto; }
.badge, .chip {
  display: inline-block;
  padding: 0 var(--space-2);
  border-radius: var(--radius-sm);
  font: 600 0.75rem/1.25rem var(--font-ui);
}
.badge-buy { background: var(--buy-tint); color: var(--buy-text); }
.badge-sell { background: var(--sell-tint); color: var(--sell-text); }
.chip { border: 1px solid var(--border-hairline); color: var(--ink-secondary); }
.chip-buy { background: var(--buy-tint); border-color: transparent; color: var(--buy-text); }
.chip-sell { background: var(--sell-tint); border-color: transparent; color: var(--sell-text); }
.news-row { border-left: 3px solid var(--warning); padding-left: var(--space-3); margin-top: var(--space-3); }
.news-title { font: var(--text-body); overflow-wrap: anywhere; }
/* Down: last known data, dimmed by tone, not opacity, so every text pair stays >= 4.5:1 (Story 6.7). */
.dimmed { background: var(--surface-base); color: var(--ink-secondary); }

/* Signal detail (Story 6.3): tappable row, back arrow, hero, levels grid, condition list, outcome. */
.signal-link { display: block; min-height: var(--tap-min); color: inherit; text-decoration: none; }
.back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--tap-min);
  min-height: var(--tap-min);
  margin-left: calc(var(--space-2) * -1);
  color: var(--ink-primary);
  font-size: 1.5rem;
  line-height: 1;
  text-decoration: none;
}
.hero-price { font: var(--text-figure-lg); margin-top: var(--space-2); }
.panel.flush { padding: 0; overflow: hidden; }
.panel-head { padding: var(--space-3) var(--space-3) var(--space-2); margin: 0; color: var(--ink-secondary); }
.section-head.panel-head { align-items: baseline; }
.section-head.panel-head .section { margin: 0; }
.grid { display: grid; grid-template-columns: 1fr 1fr; }
.grid-cell { padding: var(--space-3); border-top: 1px solid var(--border-hairline); min-width: 0; overflow-wrap: anywhere; }
.grid-cell:nth-child(odd) { border-right: 1px solid var(--border-hairline); }
.grid-cell b { display: block; margin-top: var(--space-1); font: var(--text-figure); }
.cond {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-top: 1px solid var(--border-hairline);
}
.cond > span:first-child { min-width: 0; overflow-wrap: anywhere; }
.cond > .meta { text-align: right; }
.level-buy { color: var(--buy-text); }
.level-sell { color: var(--sell-text); }

.loading .status-card, .loading .panel { animation: skeleton 1.2s ease-in-out infinite; }
.loading .status-card *, .loading .panel * { color: transparent; background: none; border-color: transparent; }
@keyframes skeleton { 50% { opacity: 0.5; } }
@media (prefers-reduced-motion: reduce) { .loading .status-card, .loading .panel { animation: none; } }

/* Performance report (Story 6.4): segmented control, period chips, hero bar, stat tiles. */
.segments { display: flex; gap: var(--space-1); padding: var(--space-1); background: var(--surface-sunken); border-radius: var(--radius-md); }
.segment {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: var(--tap-min);
  padding: 0 var(--space-1);
  border-radius: var(--radius-md);
  color: var(--ink-secondary);
  font: var(--text-body);
  text-align: center;
  overflow-wrap: anywhere;
  text-decoration: none;
}
.segment.selected { background: var(--surface-raised); color: var(--ink-primary); }
.chips { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.period-chip {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-min);
  padding: 0 var(--space-3);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  color: var(--ink-secondary);
  font: var(--text-body);
  text-decoration: none;
}
.period-chip.selected { background: var(--surface-raised); border-color: var(--accent); color: var(--ink-primary); }
.hero { display: flex; flex-direction: column; gap: var(--space-2); }
.hero .section { margin-bottom: 0; }
.hero-rate { font: var(--text-figure-lg); }
.bar { position: relative; }
.bar progress {
  display: block;
  width: 100%;
  height: 8px;
  appearance: none;
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--surface-sunken);
  color: var(--buy);
}
.bar progress::-webkit-progress-bar { background: var(--surface-sunken); border-radius: var(--radius-sm); }
.bar progress::-webkit-progress-value { background: var(--buy); border-radius: var(--radius-sm); }
.bar progress::-moz-progress-bar { background: var(--buy); border-radius: var(--radius-sm); }
.bar-marker { position: absolute; left: 70%; top: -4px; bottom: -4px; width: 2px; background: var(--ink-primary); }
.tiles { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); }
.tile {
  background: var(--surface-raised);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  min-width: 0;
  overflow-wrap: anywhere;
}
.tile-value { font: var(--text-figure-lg); }
.tile-warn { border-color: var(--warning); }
.tile-warn .tile-value { color: var(--warning); }

/* Signal history (Story 6.5): conditions line, load-more link, empty and error rows. */
.signal-conditions { overflow-wrap: anywhere; margin-top: var(--space-1); }
.history-more { border-top: 1px solid var(--border-hairline); }
.load-more { width: 100%; justify-content: center; }
.load-more[aria-busy="true"] { color: var(--ink-secondary); }

/* Backtest report (Story 6.6): saved-run rows, verdict chip, rows that are not links. */
.run-row { padding: var(--space-3) 0; border-top: 1px solid var(--border-hairline); }
.rows > .run-row:first-child { border-top: 0; padding-top: 0; }
.run-period { font: var(--text-figure); overflow-wrap: anywhere; }
.verdict { margin-left: auto; white-space: nowrap; }
.signal-body { display: block; }