/**
 * GovTender Pro — Stitch Design System & Left-Rail Floating Tab Navigation Styles
 * Author: Left-Rail Floating Tab Navigation Engineer
 * Standards: WCAG 2.2 AA/AAA, High-Utility Operational Tooling, Zero Layout Shift
 */

:root {
  /* Stitch Design System Color Tokens */
  --stitch-primary: #994200;
  --stitch-primary-hover: #b84f04;
  --stitch-primary-light: #fff2ea;
  --stitch-primary-container: #c05400;
  --stitch-primary-fixed: #ffdbca;
  --stitch-primary-fixed-dim: #ffb690;
  --stitch-on-primary: #ffffff;
  --stitch-on-primary-fixed: #331100;

  --stitch-secondary: #226677;
  --stitch-secondary-hover: #1b5361;
  --stitch-secondary-light: #f0faff;
  --stitch-secondary-container: #aae9fc;
  --stitch-on-secondary: #ffffff;
  --stitch-on-secondary-container: #004e5d;

  --stitch-surface: #fff8f2;
  --stitch-surface-bright: #fffdfa;
  --stitch-surface-container: #f8ecdc;
  --stitch-surface-container-low: #fef2e2;
  --stitch-surface-container-high: #f2e7d7;
  --stitch-surface-container-highest: #ece1d1;
  --stitch-surface-dim: #e3d9c9;

  --stitch-on-surface: #201b11;
  --stitch-on-surface-variant: #584237;
  --stitch-on-surface-subtle: #786256;

  --stitch-outline: #8b7265;
  --stitch-outline-variant: #dfc0b2;
  --stitch-outline-subtle: rgba(223, 192, 178, 0.45);

  --stitch-border-glass: rgba(223, 192, 178, 0.55);
  --stitch-bg-glass: rgba(255, 252, 248, 0.94);
  --stitch-bg-glass-elevated: rgba(255, 255, 255, 0.98);

  --stitch-shadow-dock: 0 12px 36px -4px rgba(32, 27, 17, 0.16),
                        0 4px 12px -2px rgba(153, 66, 0, 0.08),
                        0 0 0 1px rgba(255, 255, 255, 0.8) inset;
  --stitch-shadow-dock-collapsed: 0 8px 28px -4px rgba(32, 27, 17, 0.14),
                                  0 0 0 1px rgba(255, 255, 255, 0.8) inset;
  --stitch-shadow-tab-active: 0 2px 8px rgba(153, 66, 0, 0.15);
  --stitch-shadow-tooltip: 0 6px 20px rgba(32, 27, 17, 0.18), 0 2px 6px rgba(0, 0, 0, 0.08);

  --stitch-radius-dock: 10px;
  --stitch-radius-tab: 4px;
  --stitch-radius-pill: 9999px;

  --stitch-dock-width-expanded: 170px;
  --stitch-dock-width-collapsed: 46px;
  --stitch-dock-z-index: 850;

  --bg-surface-rgb: 255, 252, 248;
  --border-subtle: rgba(223, 192, 178, 0.45);

  /* Google Stitch Theme Tokens: Warm Linen / Deep Obsidian & JetBrains Mono */
  --stitch-warm-linen: #FBF9F5;
  --stitch-warm-linen-base: #F5F1E8;
  --stitch-deep-obsidian: #090A0D;
  --stitch-titanium-slate: #0E1015;
  --stitch-font-mono: 'JetBrains Mono', 'SF Mono', 'Roboto Mono', Menlo, Consolas, monospace;
  --stitch-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --stitch-orange-glow: 0 0 16px rgba(249, 115, 22, 0.4), 0 2px 6px rgba(153, 66, 0, 0.25);
  --stitch-orange-glow-sm: 0 0 8px rgba(249, 115, 22, 0.35);
  --stitch-radius-tactile: 4px;
}

/* Stitch Dark Mode Tokens (Obsidian #090A0D, Titanium Slate #0E1015, Contrast >= 4.5:1) */
html[data-theme="dark"],
[data-theme="dark"] {
  --stitch-surface: #0E1015;
  --stitch-surface-bright: #14171F;
  --stitch-surface-container: #1B1F2A;
  --stitch-surface-container-low: #11141B;
  --stitch-surface-container-high: #222736;
  --stitch-surface-container-highest: #2B3144;
  --stitch-surface-dim: #090A0D;

  --stitch-warm-linen: #090A0D;
  --stitch-warm-linen-base: #0E1015;
  --stitch-deep-obsidian: #090A0D;
  --stitch-titanium-slate: #0E1015;
  --stitch-orange-glow: 0 0 20px rgba(249, 115, 22, 0.5), 0 0 8px rgba(249, 115, 22, 0.35);

  --stitch-on-surface: #F8FAFC;
  --stitch-on-surface-variant: #CBD5E1;
  --stitch-on-surface-subtle: #94A3B8;

  --stitch-outline: #4B5368;
  --stitch-outline-variant: #33394A;
  --stitch-outline-subtle: rgba(255, 255, 255, 0.12);

  --stitch-border-glass: rgba(255, 255, 255, 0.14);
  --stitch-bg-glass: rgba(14, 16, 21, 0.94);
  --stitch-bg-glass-elevated: rgba(20, 23, 31, 0.98);

  --stitch-shadow-dock: 0 12px 36px -4px rgba(0, 0, 0, 0.55),
                        0 4px 12px -2px rgba(249, 115, 22, 0.14),
                        0 0 0 1px rgba(255, 255, 255, 0.08) inset;
  --stitch-shadow-dock-collapsed: 0 8px 28px -4px rgba(0, 0, 0, 0.50),
                                  0 0 0 1px rgba(255, 255, 255, 0.08) inset;

  --bg-surface-rgb: 14, 16, 21;
  --border-subtle: rgba(255, 255, 255, 0.12);
}

/* ==========================================================================
   STITCH 4PX TACTILE BUTTON SYSTEM WITH ORANGE GLOW
   ========================================================================== */

.tactile-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--stitch-font-mono, 'JetBrains Mono', monospace);
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.2;
  border-radius: 4px;
  border: 1px solid transparent;
  padding: 8px 14px;
  cursor: pointer;
  text-decoration: none;
  box-sizing: border-box;
  transition: all 120ms cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
  -webkit-user-select: none;
}

.tactile-btn:active {
  transform: translateY(1px);
}

.tactile-btn:focus-visible {
  outline: 2px solid var(--accent-orange, #F97316);
  outline-offset: 2px;
}

.tactile-btn-primary {
  background: var(--stitch-primary, #994200);
  background: linear-gradient(180deg, #c05400 0%, #994200 100%);
  color: #ffffff !important;
  border-color: #783200;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.tactile-btn-primary:hover {
  background: linear-gradient(180deg, #d95e00 0%, #b84f04 100%);
  box-shadow: var(--stitch-orange-glow, 0 0 16px rgba(249, 115, 22, 0.4), 0 2px 6px rgba(153, 66, 0, 0.25));
  color: #ffffff !important;
}

.tactile-btn-secondary {
  background: var(--stitch-surface-container, #F8ECDC);
  color: var(--stitch-on-surface, #201b11) !important;
  border-color: var(--stitch-outline-variant, #dfc0b2);
}

.tactile-btn-secondary:hover {
  background: var(--stitch-surface-container-high, #f2e7d7);
  border-color: var(--stitch-outline, #8b7265);
}

.tactile-btn-tactical {
  background: var(--stitch-secondary, #226677);
  color: #ffffff !important;
  border-color: #1b5361;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.tactile-btn-tactical:hover {
  background: var(--stitch-secondary-hover, #1b5361);
  box-shadow: 0 0 12px rgba(34, 102, 119, 0.35);
  color: #ffffff !important;
}

.tactile-btn-outline {
  background: transparent;
  color: var(--text-primary, #1c1917) !important;
  border-color: var(--border-medium, #DDD5C7);
}

.tactile-btn-outline:hover {
  border-color: var(--accent-orange, #F97316);
  color: var(--accent-orange, #F97316) !important;
  background: var(--accent-orange-light, #FFF7ED);
  box-shadow: var(--stitch-orange-glow-sm, 0 0 8px rgba(249, 115, 22, 0.35));
}

.tactile-btn-sm {
  padding: 4px 8px;
  font-size: 0.74rem;
  border-radius: 4px;
}

.tactile-btn-lg {
  padding: 12px 22px;
  font-size: 0.95rem;
  border-radius: 4px;
}

.tactile-btn.active {
  background: var(--stitch-primary, #994200);
  color: #ffffff !important;
  border-color: #783200;
  box-shadow: var(--stitch-orange-glow-sm, 0 0 8px rgba(249, 115, 22, 0.35));
}

/* ==========================================================================
   LEFT-RAIL FLOATING DOCK CONTAINER (DESKTOP)
   Human-grade, ultra-clean glassmorphic navigation dock
   ========================================================================== */

.left-rail-floating-nav:not(.rail-mode),
.floating-tab-dock:not(.rail-mode) {
  position: fixed;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  z-index: var(--stitch-dock-z-index, 850);
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  font-family: var(--stitch-font-sans, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);
  user-select: none;
  -webkit-user-select: none;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.left-rail-floating-nav * {
  box-sizing: border-box;
}

/* Glassmorphic Dock Surface: 170px expanded, 46px collapsed */
.left-rail-dock-inner {
  pointer-events: auto;
  width: var(--stitch-dock-width-expanded, 170px);
  max-height: calc(100vh - 40px);
  display: flex;
  flex-direction: column;
  background: rgba(var(--bg-surface-rgb, 255, 252, 248), 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle, rgba(223, 192, 178, 0.45));
  border-radius: 10px;
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.08);
  padding: 6px 4px;
  overflow: hidden;
  transition: width 0.22s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.2s ease,
              border-color 0.2s ease;
}

/* Collapsed State on Desktop */
.left-rail-floating-nav.collapsed .left-rail-dock-inner {
  width: var(--stitch-dock-width-collapsed, 46px);
  padding: 6px 3px;
  box-shadow: 0 4px 16px -2px rgba(0, 0, 0, 0.06);
}

/* Subtle dock hover sheen */
.left-rail-dock-inner:hover {
  border-color: rgba(249, 115, 22, 0.35);
}

/* Dark Mode Surface Override */
html[data-theme="dark"] .left-rail-dock-inner,
[data-theme="dark"] .left-rail-dock-inner {
  background: rgba(var(--bg-surface-rgb, 14, 16, 21), 0.88);
  border-color: var(--border-subtle, rgba(255, 255, 255, 0.12));
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.55);
}

/* ==========================================================================
   MINIMAL BRAND MARK HEADER & TOGGLE
   ========================================================================== */

.left-rail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 4px 6px 6px;
  border-bottom: 1px solid var(--border-subtle, rgba(223, 192, 178, 0.3));
  margin-bottom: 4px;
  min-height: 32px;
}

.left-rail-brand {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow: hidden;
  white-space: nowrap;
}

.left-rail-gt-badge {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  background: #090A0D;
  color: #FFFFFF;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--stitch-font-mono, monospace);
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: -0.5px;
  flex-shrink: 0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .left-rail-gt-badge {
  background: #F97316;
  color: #090A0D;
}

.left-rail-brand-name {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--stitch-on-surface, #201b11);
  letter-spacing: -0.2px;
  font-family: var(--stitch-font-sans, sans-serif);
}

[data-theme="dark"] .left-rail-brand-name {
  color: #F8FAFC;
}

.left-rail-floating-nav.collapsed .left-rail-header {
  justify-content: center;
  padding: 4px 0 6px 0;
}

.left-rail-floating-nav.collapsed .left-rail-brand {
  display: none;
}

/* Toggle Collapse Button */
.left-rail-toggle-btn {
  background: transparent;
  border: 1px solid transparent;
  border-radius: 4px;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--stitch-outline, #8b7265);
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
  padding: 0;
  flex-shrink: 0;
}

.left-rail-toggle-btn:hover {
  background: rgba(0, 0, 0, 0.05);
  color: #F97316;
  border-color: rgba(249, 115, 22, 0.2);
}

[data-theme="dark"] .left-rail-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #FB923C;
}

.left-rail-toggle-btn:focus-visible {
  outline: 2px solid #F97316;
  outline-offset: 2px;
}

.left-rail-toggle-btn svg {
  width: 13px;
  height: 13px;
  fill: currentColor;
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.left-rail-floating-nav.collapsed .left-rail-toggle-btn svg {
  transform: rotate(180deg);
}

/* ==========================================================================
   TAB LIST & SUBTLE TACTILE 4PX TABS
   ========================================================================== */

.left-rail-tab-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
  overflow-x: hidden;
  max-height: calc(100vh - 110px);
  scrollbar-width: none;
}

.left-rail-tab-list::-webkit-scrollbar {
  display: none;
}

.left-rail-tab-item {
  margin: 0;
  padding: 0;
  position: relative;
}

/* Subtle tactile 4px tabs with 12.5px font */
.left-rail-tab-btn {
  display: flex;
  align-items: center;
  position: relative;
  width: 100%;
  padding: 5px 6px 5px 8px;
  border-radius: 4px;
  text-decoration: none;
  color: var(--stitch-on-surface-variant, #584237);
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1.2;
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  outline: none;
  transition: background 0.12s ease,
              color 0.12s ease,
              border-color 0.12s ease;
  white-space: nowrap;
}

/* Smooth hover states without jumping */
.left-rail-tab-btn:hover {
  background: rgba(0, 0, 0, 0.04);
  color: var(--stitch-on-surface, #201b11);
  border-color: rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] .left-rail-tab-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #F8FAFC;
  border-color: rgba(255, 255, 255, 0.08);
}

.left-rail-tab-btn:focus-visible {
  outline: 2px solid #F97316;
  outline-offset: 1px;
}

/* Active tab state */
.left-rail-tab-btn.active {
  background: rgba(249, 115, 22, 0.08);
  color: #F97316;
  font-weight: 600;
  border-color: rgba(249, 115, 22, 0.22);
}

[data-theme="dark"] .left-rail-tab-btn.active {
  background: rgba(249, 115, 22, 0.15);
  color: #FB923C;
  border-color: rgba(249, 115, 22, 0.35);
}

/* Orange vertical pill accent on active tab (#F97316) */
.left-rail-tab-indicator {
  position: absolute;
  left: 2px;
  top: 50%;
  transform: translateY(-50%) scaleY(0);
  width: 3px;
  height: 14px;
  background: #F97316;
  border-radius: 9999px;
  box-shadow: 0 0 6px rgba(249, 115, 22, 0.45);
  transition: transform 0.18s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.15s ease;
  opacity: 0;
}

.left-rail-tab-btn.active .left-rail-tab-indicator {
  transform: translateY(-50%) scaleY(1);
  opacity: 1;
}

/* Clean Line Icons */
.left-rail-tab-icon {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--stitch-outline, #8b7265);
  margin-right: 7px;
  transition: color 0.12s ease;
}

.left-rail-tab-icon svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

.left-rail-tab-btn:hover .left-rail-tab-icon {
  color: var(--stitch-on-surface, #201b11);
}

.left-rail-tab-btn.active .left-rail-tab-icon {
  color: #F97316;
}

[data-theme="dark"] .left-rail-tab-btn.active .left-rail-tab-icon {
  color: #FB923C;
}

.left-rail-tab-label {
  flex-grow: 1;
  text-overflow: ellipsis;
  overflow: hidden;
  letter-spacing: -0.15px;
}

/* Badges */
.left-rail-tab-badge {
  font-size: 9px;
  font-weight: 700;
  padding: 1px 4px;
  border-radius: 9999px;
  background: rgba(0, 0, 0, 0.06);
  color: var(--stitch-on-surface-variant, #584237);
  margin-left: 3px;
  letter-spacing: 0.1px;
  flex-shrink: 0;
}

.left-rail-tab-badge.badge-amber {
  background: #F97316;
  color: #ffffff;
}

.left-rail-tab-badge.badge-demo {
  background: #FEF3C7;
  color: #92400E;
  border: 1px solid #FDE68A;
}

/* Collapsed View on Desktop */
.left-rail-floating-nav.collapsed .left-rail-tab-btn {
  justify-content: center;
  padding: 7px 0;
}

.left-rail-floating-nav.collapsed .left-rail-tab-icon {
  margin-right: 0;
}

.left-rail-floating-nav.collapsed .left-rail-tab-label,
.left-rail-floating-nav.collapsed .left-rail-tab-badge {
  display: none;
}

.left-rail-floating-nav.collapsed .left-rail-tab-indicator {
  left: 1px;
}

/* Floating Tooltip in Collapsed Mode */
.left-rail-tooltip {
  position: absolute;
  left: calc(100% + 8px);
  top: 50%;
  transform: translateY(-50%) translateX(-4px);
  background: rgba(9, 10, 13, 0.95);
  color: #F8FAFC;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.14s ease, transform 0.14s ease, visibility 0.14s;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  z-index: calc(var(--stitch-dock-z-index, 850) + 50);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.left-rail-floating-nav.collapsed .left-rail-tab-btn:hover .left-rail-tooltip,
.left-rail-floating-nav.collapsed .left-rail-tab-btn:focus-visible .left-rail-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(0);
}

/* ==========================================================================
   DOCK FOOTER & SCROLL PROGRESS
   ========================================================================== */

.left-rail-footer {
  margin-top: 4px;
  padding-top: 4px;
  border-top: 1px solid var(--border-subtle, rgba(223, 192, 178, 0.3));
  display: flex;
  flex-direction: column;
  gap: 3px;
}

/* Return Home Button for Portal Page */
.left-rail-return-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 100%;
  padding: 5px 6px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.04);
  color: var(--stitch-on-surface, #201b11);
  font-size: 11px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border-subtle, rgba(223, 192, 178, 0.4));
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
  white-space: nowrap;
}

.left-rail-return-btn:hover {
  background: rgba(249, 115, 22, 0.1);
  color: #F97316;
  border-color: rgba(249, 115, 22, 0.3);
}

.left-rail-floating-nav.collapsed .left-rail-return-btn span:not(.left-rail-cta-icon) {
  display: none;
}

/* Scroll Progress Bar */
.left-rail-progress-bar-wrap {
  width: 100%;
  height: 2px;
  background: rgba(0, 0, 0, 0.06);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 2px;
}

.left-rail-progress-bar {
  height: 100%;
  width: 0%;
  background: #F97316;
  transition: width 0.08s linear;
}

/* ==========================================================================
   MOBILE & TABLET RESPONSIVE SYSTEM (< 1024px)
   Collapses into a small floating bottom-left pill trigger ("Jump to section")
   that opens an accessible bottom sheet on tap.
   ========================================================================== */

.left-rail-mobile-trigger {
  display: none;
}

.left-rail-mobile-sheet {
  display: none;
}

.left-rail-mobile-backdrop {
  display: none;
}

@media (max-width: 1023px) {
  .left-rail-dock-inner {
    display: none !important;
  }

  .left-rail-floating-nav {
    position: static;
    transform: none;
    pointer-events: auto;
  }

  /* Small floating bottom-left pill trigger ("Jump to section") */
  .left-rail-mobile-trigger {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    position: fixed;
    left: 14px;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
    z-index: 990;
    background: rgba(var(--bg-surface-rgb, 255, 252, 248), 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle, rgba(223, 192, 178, 0.5));
    border-radius: 9999px;
    padding: 7px 12px 7px 9px;
    box-shadow: 0 4px 16px -2px rgba(0, 0, 0, 0.12);
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    color: var(--stitch-on-surface, #201b11);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
  }

  [data-theme="dark"] .left-rail-mobile-trigger {
    background: rgba(14, 16, 21, 0.94);
    border-color: rgba(255, 255, 255, 0.15);
    color: #F8FAFC;
    box-shadow: 0 4px 16px -2px rgba(0, 0, 0, 0.45);
  }

  .left-rail-mobile-trigger:active {
    transform: scale(0.96);
  }

  .left-rail-mobile-trigger:focus-visible {
    outline: 2px solid #F97316;
    outline-offset: 2px;
  }

  .left-rail-mobile-pill-icon {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #F97316;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .left-rail-mobile-pill-icon svg {
    width: 12px;
    height: 12px;
    fill: currentColor;
  }

  .left-rail-mobile-active-label {
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--stitch-on-surface, #201b11);
    font-weight: 600;
  }

  [data-theme="dark"] .left-rail-mobile-active-label {
    color: #F8FAFC;
  }

  .left-rail-mobile-chevron {
    width: 12px;
    height: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--stitch-outline, #8b7265);
    transition: transform 0.2s ease;
  }

  .left-rail-mobile-chevron svg {
    width: 10px;
    height: 10px;
    fill: currentColor;
  }

  .left-rail-mobile-trigger.open .left-rail-mobile-chevron {
    transform: rotate(180deg);
  }

  /* Backdrop Overlay */
  .left-rail-mobile-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(9, 10, 13, 0.45);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 995;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s ease;
  }

  .left-rail-mobile-backdrop.open {
    opacity: 1;
    pointer-events: auto;
  }

  /* Accessible Bottom Sheet */
  .left-rail-mobile-sheet {
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 8px;
    right: 8px;
    bottom: calc(8px + env(safe-area-inset-bottom, 0px));
    max-height: 80vh;
    z-index: 1000;
    background: var(--stitch-surface-bright, #fffdfa);
    border: 1px solid var(--border-subtle, rgba(223, 192, 178, 0.5));
    border-radius: 16px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.24);
    padding: 12px 12px 16px 12px;
    transform: translateY(115%);
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
  }

  [data-theme="dark"] .left-rail-mobile-sheet {
    background: #14171F;
    border-color: rgba(255, 255, 255, 0.12);
  }

  .left-rail-mobile-sheet.open {
    transform: translateY(0);
  }

  .left-rail-mobile-sheet-handle {
    width: 32px;
    height: 4px;
    border-radius: 2px;
    background: var(--stitch-outline-variant, #dfc0b2);
    margin: 0 auto 8px auto;
  }

  .left-rail-mobile-sheet-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-subtle, rgba(223, 192, 178, 0.3));
    margin-bottom: 8px;
  }

  .left-rail-mobile-sheet-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--stitch-on-surface, #201b11);
    display: flex;
    align-items: center;
    gap: 6px;
  }

  [data-theme="dark"] .left-rail-mobile-sheet-title {
    color: #F8FAFC;
  }

  .left-rail-mobile-sheet-close {
    background: rgba(0, 0, 0, 0.05);
    border: none;
    border-radius: 50%;
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--stitch-on-surface, #201b11);
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
  }

  [data-theme="dark"] .left-rail-mobile-sheet-close {
    background: rgba(255, 255, 255, 0.08);
    color: #F8FAFC;
  }

  /* Grid of Tabs */
  .left-rail-mobile-tab-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    overflow-y: auto;
    max-height: 55vh;
    padding-right: 2px;
  }

  @media (max-width: 480px) {
    .left-rail-mobile-tab-grid {
      grid-template-columns: 1fr;
    }
  }

  .left-rail-mobile-tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--border-subtle, rgba(223, 192, 178, 0.35));
    border-radius: 6px;
    text-decoration: none;
    color: var(--stitch-on-surface, #201b11);
    font-size: 12px;
    font-weight: 600;
    min-height: 44px; /* WCAG 2.2 AA target size */
    transition: background 0.12s ease;
  }

  [data-theme="dark"] .left-rail-mobile-tab-btn {
    background: rgba(255, 255, 255, 0.04);
    color: #F8FAFC;
    border-color: rgba(255, 255, 255, 0.08);
  }

  .left-rail-mobile-tab-btn:active {
    background: rgba(249, 115, 22, 0.1);
  }

  .left-rail-mobile-tab-btn.active {
    background: rgba(249, 115, 22, 0.12);
    border-color: #F97316;
    color: #F97316;
    font-weight: 700;
  }

  .left-rail-mobile-tab-icon {
    width: 18px;
    height: 18px;
    color: var(--stitch-outline, #8b7265);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .left-rail-mobile-tab-icon svg {
    width: 15px;
    height: 15px;
    fill: currentColor;
  }

  .left-rail-mobile-tab-btn.active .left-rail-mobile-tab-icon {
    color: #F97316;
  }
}

/* ==========================================================================
   DESKTOP AUTO-COLLAPSE (1024px to 1279px)
   ========================================================================== */

@media (min-width: 1024px) and (max-width: 1279px) {
  .left-rail-floating-nav:not([data-user-expanded="true"]) .left-rail-dock-inner {
    width: var(--stitch-dock-width-collapsed, 46px);
    box-shadow: 0 4px 16px -2px rgba(0, 0, 0, 0.06);
    padding: 6px 3px;
  }

  .left-rail-floating-nav:not([data-user-expanded="true"]) .left-rail-brand-name,
  .left-rail-floating-nav:not([data-user-expanded="true"]) .left-rail-tab-label,
  .left-rail-floating-nav:not([data-user-expanded="true"]) .left-rail-tab-badge {
    display: none;
  }

  .left-rail-floating-nav:not([data-user-expanded="true"]) .left-rail-tab-btn {
    justify-content: center;
    padding: 7px 0;
  }

  .left-rail-floating-nav:not([data-user-expanded="true"]) .left-rail-tab-icon {
    margin-right: 0;
  }

  .left-rail-floating-nav:not([data-user-expanded="true"]) .left-rail-header {
    justify-content: center;
    padding: 4px 0 6px 0;
  }

  .left-rail-floating-nav:not([data-user-expanded="true"]) .left-rail-brand {
    display: none;
  }

  .left-rail-floating-nav:not([data-user-expanded="true"]) .left-rail-toggle-btn svg {
    transform: rotate(180deg);
  }

  .left-rail-floating-nav:not([data-user-expanded="true"]) .left-rail-return-btn span:not(.left-rail-cta-icon) {
    display: none;
  }

  .left-rail-floating-nav:not([data-user-expanded="true"]) .left-rail-tab-btn:hover .left-rail-tooltip,
  .left-rail-floating-nav:not([data-user-expanded="true"]) .left-rail-tab-btn:focus-visible .left-rail-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
  }
}

/* ==========================================================================
   DESKTOP CLEARANCE & ZERO LAYOUT OVERLAP (Screens >= 1280px)
   ========================================================================== */

@media (min-width: 1280px) {
  /* Dock sits at fixed left: 14px.
     Collapsed width: 46px -> total 60px. 72px clearance provides 12px breathing buffer.
     Expanded width: 170px -> total 184px. 196px clearance provides 12px breathing buffer. */

  body.has-floating-nav .page-wrapper > main,
  body:has(.left-rail-floating-nav:not(.rail-mode)) .page-wrapper > main,
  body:has(#left-rail-floating-nav:not(.rail-mode)) .page-wrapper > main {
    padding-left: 72px;
    transition: padding-left 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  }

  body.has-floating-nav.has-floating-nav-expanded .page-wrapper > main,
  body:has(.left-rail-floating-nav:not(.rail-mode):not(.collapsed)) .page-wrapper > main,
  body:has(#left-rail-floating-nav:not(.rail-mode):not(.collapsed)) .page-wrapper > main {
    padding-left: 196px;
  }

  /* Reset inner container left padding to prevent compounding indent */
  body.has-floating-nav .container,
  body:has(.left-rail-floating-nav:not(.rail-mode)) .container,
  body.has-floating-nav .command-container,
  body:has(.left-rail-floating-nav:not(.rail-mode)) .command-container {
    padding-left: clamp(1rem, 2.5vw, 2.5rem) !important;
    padding-right: clamp(1rem, 2.5vw, 2.5rem) !important;
  }
}

@media (min-width: 1680px) {
  /* On screens >= 1680px, centered max-width container leaves >= 180px in the left gutter.
     The 170px dock floats cleanly in that margin without requiring any main canvas clearance. */
  body.has-floating-nav .page-wrapper > main,
  body:has(.left-rail-floating-nav:not(.rail-mode)) .page-wrapper > main,
  body:has(#left-rail-floating-nav:not(.rail-mode)) .page-wrapper > main,
  body.has-floating-nav.has-floating-nav-expanded .page-wrapper > main,
  body:has(.left-rail-floating-nav:not(.rail-mode):not(.collapsed)) .page-wrapper > main,
  body:has(#left-rail-floating-nav:not(.rail-mode):not(.collapsed)) .page-wrapper > main {
    padding-left: 0;
  }
}

/* ==========================================================================
   ACCESSIBILITY & PRINT OVERRIDES
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .left-rail-floating-nav,
  .left-rail-dock-inner,
  .left-rail-tab-btn,
  .left-rail-tab-indicator,
  .left-rail-mobile-sheet,
  .left-rail-mobile-trigger,
  .left-rail-mobile-backdrop {
    transition: none !important;
    animation: none !important;
  }
}

@media print {
  .left-rail-floating-nav,
  .left-rail-mobile-trigger,
  .left-rail-mobile-sheet,
  .left-rail-mobile-backdrop {
    display: none !important;
  }
}

/* ==========================================================================
   CONTAINER PADDING & CLEAN CONTAINMENT ARCHITECTURE
   ========================================================================== */

/* Universal Strict Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
}

.command-container,
.portal-shell,
.command-canvas {
  width: 100%;
  max-width: 1320px;
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1rem, 3vw, 2.5rem);
  padding-right: clamp(1rem, 3vw, 2.5rem);
  overflow-x: clip;
  box-sizing: border-box;
}

.command-container {
  width: 100%;
  max-width: 1320px;
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1rem, 3vw, 2.5rem);
  padding-right: clamp(1rem, 3vw, 2.5rem);
  overflow-x: clip;
  box-sizing: border-box;
}

.portal-shell {
  width: 100%;
  max-width: 100%;
  padding-left: clamp(1rem, 3vw, 2.5rem);
  padding-right: clamp(1rem, 3vw, 2.5rem);
  overflow-x: clip;
  box-sizing: border-box;
}

.command-canvas {
  width: 100%;
  min-height: 100%;
  position: relative;
  padding-left: clamp(1rem, 3vw, 2.5rem);
  padding-right: clamp(1rem, 3vw, 2.5rem);
  overflow-x: clip;
  box-sizing: border-box;
}

.content-well {
  background: var(--stitch-surface, #FFFFFF);
  border: 1px solid var(--stitch-outline-variant, #DDD5C7);
  border-radius: var(--stitch-radius-lg, 12px);
  padding: clamp(1.25rem, 2.5vw, 2rem);
  box-shadow: 0 2px 8px rgba(28, 25, 23, 0.04);
  box-sizing: border-box;
}

/* Dedicated Interactive Demo Simulator Section */
.demo-simulator-section {
  position: relative;
  padding: clamp(2.5rem, 4vw, 4rem) 0;
  background: linear-gradient(180deg, #FBF9F5 0%, #F5EFE6 50%, #FAF7F2 100%);
  border-top: 1px solid var(--stitch-outline-variant, #E8E2D8);
  border-bottom: 1px solid var(--stitch-outline-variant, #E8E2D8);
  overflow: hidden;
}

.demo-simulator-header {
  text-align: center;
  max-width: 840px;
  margin: 0 auto clamp(1.5rem, 3vw, 2.25rem) auto;
}

.demo-simulator-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border-radius: 999px;
  background: #FEF3C7;
  border: 1px solid #FDE68A;
  color: #92400E;
  font-family: var(--font-mono, monospace);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.demo-simulator-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  color: #1C1917;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin: 0 0 12px 0;
}

.demo-simulator-subtitle {
  font-size: clamp(0.95rem, 1.2vw, 1.1rem);
  color: #57534E;
  line-height: 1.6;
  margin: 0 auto;
}

.demo-trade-selector-bar {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.demo-trade-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 10px;
  background: #FFFFFF;
  border: 1px solid #D6D3D1;
  color: #292524;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.demo-trade-btn:hover {
  border-color: #EA580C;
  color: #C2410C;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(234, 88, 12, 0.12);
}

.demo-trade-btn.active {
  background: #FFF7ED;
  border-color: #EA580C;
  color: #C2410C;
  box-shadow: 0 0 0 2px rgba(234, 88, 12, 0.2), 0 4px 12px rgba(234, 88, 12, 0.15);
}

.demo-terminal-wrapper {
  background: #FFFFFF;
  border: 1px solid #D6D3D1;
  border-radius: 16px;
  box-shadow: 0 12px 40px -10px rgba(44, 38, 30, 0.12), 0 2px 6px rgba(0,0,0,0.04);
  overflow: hidden;
}

.demo-terminal-topbar {
  background: #1C1917;
  color: #E7E5E4;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  border-bottom: 1px solid #292524;
}

.demo-terminal-dots {
  display: flex;
  gap: 6px;
  align-items: center;
}

.demo-terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.demo-terminal-dot.red { background: #EF4444; }
.demo-terminal-dot.yellow { background: #F59E0B; }
.demo-terminal-dot.green { background: #10B981; }

.demo-terminal-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono, monospace);
  font-size: 0.72rem;
  color: #A8A29E;
  flex-wrap: wrap;
}

.demo-terminal-live-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #34D399;
  font-weight: 700;
}

.demo-terminal-body {
  padding: clamp(1rem, 2.5vw, 1.75rem);
}

.demo-sim-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 20px;
}

@media (max-width: 960px) {
  .demo-sim-grid {
    grid-template-columns: 1fr;
  }
}

.demo-sim-card {
  background: #FDFCF9;
  border: 1px solid #E7E5E4;
  border-radius: 12px;
  padding: 16px;
  transition: all 0.2s ease;
  margin-bottom: 12px;
}

.demo-sim-card:hover {
  border-color: #EA580C;
  box-shadow: 0 4px 14px rgba(234, 88, 12, 0.08);
}

.demo-sim-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 8px;
}

.demo-sim-agency-badge {
  font-family: var(--font-mono, monospace);
  font-size: 0.68rem;
  font-weight: 700;
  color: #EA580C;
  background: #FFF7ED;
  padding: 2px 8px;
  border-radius: 4px;
}

.demo-sim-value {
  font-family: var(--font-mono, monospace);
  font-size: 0.95rem;
  font-weight: 800;
  color: #10B981;
}

.demo-sim-card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #1C1917;
  line-height: 1.35;
  margin: 0 0 8px 0;
}

.demo-sim-meta-row {
  display: flex;
  gap: 12px;
  font-size: 0.75rem;
  color: #78716C;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.demo-sim-meta-item strong {
  color: #44403C;
}

.demo-sim-footer-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 10px;
  border-top: 1px dashed #E7E5E4;
  gap: 10px;
}

.demo-sim-match-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  color: #047857;
  background: #ECFDF5;
  padding: 3px 8px;
  border-radius: 999px;
}

.demo-sim-sidebar-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.demo-prime-card {
  background: #FFFBF5;
  border: 1px solid #FED7AA;
  border-radius: 12px;
  padding: 16px;
}

.demo-prime-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.demo-prime-badge {
  font-size: 0.7rem;
  font-weight: 700;
  color: #C2410C;
  background: #FFEDD5;
  padding: 2px 8px;
  border-radius: 4px;
}

.demo-prime-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: #1C1917;
  margin: 0 0 6px 0;
}

.demo-prime-desc {
  font-size: 0.8rem;
  color: #57534E;
  line-height: 1.45;
  margin: 0 0 10px 0;
}

.demo-terminal-cta-strip {
  background: #FAF7F2;
  border-top: 1px solid #E7E5E4;
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}