/* ==========================================================
   TradeMind Shell Layout
   All layout primitives — no colours, no business styles.
   ========================================================== */

/* ----------------------------------------------------------
   CSS variable aliases — bridge components that use the old
   names (--border-color, --bg-raised, etc.) to the design
   system tokens defined in theme.css
   ---------------------------------------------------------- */
:root {
  --border-color:    var(--border);
  --bg-raised:       var(--bg-elevated);
  --color-danger:    var(--danger);
  --color-danger-bg: var(--danger-bg);
  --color-danger-border: var(--danger-border);
  --color-teal-bg:   var(--color-teal-bg, rgba(0, 201, 167, 0.12));
  --color-teal-border: var(--color-teal-border, rgba(0, 201, 167, 0.3));
  --color-gold-bg:   var(--color-gold-bg, rgba(246, 201, 14, 0.12));
  --color-gold-border: var(--color-gold-border, rgba(246, 201, 14, 0.3));
  --text-dim:        var(--border);
}

/* ----------------------------------------------------------
   App shell containers
   ---------------------------------------------------------- */
.app-shell {
  display: block;
  min-height: 100vh;
}

/* ----------------------------------------------------------
   Sidebar — used by the CSS-in-JS Sidebar component.
   These classes exist as semantic hooks; sizing is in JSX.
   ---------------------------------------------------------- */
.sidebar-item {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.sidebar-item:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.sidebar-item:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: -2px;
  border-radius: var(--radius-md);
}

/* ----------------------------------------------------------
   Main content area
   Used as a fallback; actual inline styles in AppLayout.jsx
   ---------------------------------------------------------- */
.app-main {
  box-sizing: border-box;
  width: 100%;
}

/* ----------------------------------------------------------
   Utility grid classes
   ---------------------------------------------------------- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}

@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 540px) {
  .grid-4,
  .grid-3,
  .grid-2 { grid-template-columns: 1fr; }
}

/* ----------------------------------------------------------
   Stock selector row
   ---------------------------------------------------------- */
.stocks-scroll {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.stock-btn {
  padding: 5px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.stock-btn:hover {
  border-color: var(--color-teal);
  color: var(--text-primary);
}

.stock-btn.active {
  background: var(--color-teal-bg);
  border-color: var(--color-teal);
  color: var(--color-teal);
}

.stock-btn:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* ----------------------------------------------------------
   Metric card — used with MetricCard component
   ---------------------------------------------------------- */
.metric-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: var(--space-4) var(--space-3);
  text-align: center;
  transition: border-color var(--transition-fast);
}

.metric-card:hover {
  border-color: var(--border-hover);
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
  line-height: 1.2;
}

.metric-label {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-weight: 600;
}

/* ----------------------------------------------------------
   Tab bar
   ---------------------------------------------------------- */
.tab-bar {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-5);
}

.tab {
  padding: 9px 16px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-family: var(--font-sans);
  transition: color var(--transition-fast), border-color var(--transition-fast);
  position: relative;
}

.tab:hover {
  color: var(--text-primary);
}

.tab.active {
  color: var(--color-teal);
  border-bottom-color: var(--color-teal);
}

.tab:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: -2px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

/* ----------------------------------------------------------
   Mono utility
   ---------------------------------------------------------- */
.mono {
  font-family: var(--font-mono);
}

/* ----------------------------------------------------------
   Signal header layout
   ---------------------------------------------------------- */
.signal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}

/* ----------------------------------------------------------
   Page transition wrapper
   ---------------------------------------------------------- */
.page-transition-wrapper {
  width: 100%;
}

/* ----------------------------------------------------------
   Reduce motion
   ---------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}