.sc-footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
  padding: 32px 0 0 0;
}
.sc-footer-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sc-footer-brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--ds-color-primary, #0A84FF);
  margin-bottom: 4px;
}
.sc-footer-tagline {
  font-size: 13px;
  color: var(--ds-color-text-muted, #6e6e73);
  margin-bottom: 8px;
}
.sc-footer-social a {
  font-size: 18px;
  margin-right: 8px;
  color: var(--ds-color-primary, #0A84FF);
  text-decoration: none;
}
.sc-footer-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ds-color-text, #1d1d1f);
}
.sc-footer-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.sc-footer-link {
  color: var(--ds-color-primary, #0A84FF);
  text-decoration: none;
  font-size: 13px;
  margin-bottom: 4px;
  display: inline-block;
}
.sc-footer-link:hover {
  text-decoration: underline;
}
.sc-footer-copy {
  text-align: center;
  margin-top: 24px;
  padding-top: 12px;
  border-top: 1px solid var(--ds-color-border, #e0e0e0);
  color: var(--ds-color-text-muted, #6e6e73);
  font-size: 13px;
}
.sc-footer-extra {
  text-align: center;
  margin-top: 12px;
  font-size: 13px;
  color: var(--ds-color-text-muted, #6e6e73);
}
/* ========================= */
/* 9. FOOTER COMPONENT       */
/* ========================= */
.sc-footer {
  width: 100%;
  background: var(--ds-color-bg-alt, #f5f5f7);
  border-top: 1px solid var(--ds-color-border, #e0e0e0);
  padding: 16px 0 0 0;
  margin-top: 32px;
  font-size: 14px;
  color: var(--ds-color-text-muted, #6e6e73);
  box-shadow: 0 -2px 8px rgba(0,0,0,0.04);
}
.sc-footer-content {
  max-width: var(--ds-container-max, 1200px);
  margin: 0 auto;
  padding: 0 24px 12px 24px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}
/* SmartCase Design System (Core Layer)
   ====================================
   Goals:
   - Single source of truth for colors, spacing, typography, elevation, radii
   - Lightweight utility classes (atomic-ish) to reduce custom CSS per module
   - Theme-ready (light/dark) + brand injection via CSS variables
   - Non-breaking: additive; existing premium_v2.css keeps working

   INTEGRATION ORDER (recommended):
   1. design_system.css (core tokens + utilities)
   2. premium_v2.css (component styles)
   3. module overrides (if needed)

   Migration Strategy:
   - Phase 1: Provide tokens + utilities
   - Phase 2: Refactor premium_v2.css and game_footer to reuse tokens
   - Phase 3: Replace inline <style> blocks in modules with utilities
   - Phase 4: Enforce lint: no raw #hex except in design_system.css
*/

/* ========================= */
/* 1. ROOT TOKEN SET         */
/* ========================= */
:root {
  /* Brand / Primary (overridden by branding.config.php) */
  --ds-color-primary: var(--brand-primary, #0A84FF);
  --ds-color-primary-hover: var(--brand-primary-hover, #0066CC);
  --ds-color-secondary: var(--brand-secondary, #5E5CE6);
  --ds-color-success: var(--brand-success, #30D158);
  --ds-color-warning: var(--brand-warning, #FF9500);
  --ds-color-danger: var(--brand-danger, #FF3B30);

  /* Neutral Palette (Light) */
  --ds-color-bg: #ffffff;
  --ds-color-bg-alt: #f5f5f7;
  --ds-color-surface: #ffffff;
  --ds-color-surface-alt: #f0f2f5;
  --ds-color-border: rgba(0,0,0,0.08);
  --ds-color-text: #1d1d1f;
  --ds-color-text-muted: #6e6e73;
  
  /* Player v4 result card compatibility */
  --sc-card-bg: #ffffff;
  --sc-border: rgba(0,0,0,0.15);
  --sc-text: #0b1220;

  /* Elevation & Effects */
  --ds-shadow-sm: 0 1px 2px rgba(0,0,0,0.08);
  --ds-shadow-md: 0 4px 12px rgba(0,0,0,0.12);
  --ds-shadow-lg: 0 12px 32px rgba(0,0,0,0.18);

  /* Shape & Layout */
  --ds-radius-xs: 4px;
  --ds-radius-sm: 8px;
  --ds-radius-md: 12px;
  --ds-radius-lg: 16px;
  --ds-radius-pill: 999px;
  --ds-container-max: 1200px;

  /* Spacing Scale (4pt + 8pt hybrid) */
  --ds-space-1: 4px;
  --ds-space-2: 8px;
  --ds-space-3: 12px;
  --ds-space-4: 16px;
  --ds-space-5: 20px;
  --ds-space-6: 24px;
  --ds-space-7: 32px;
  --ds-space-8: 40px;
  --ds-space-9: 56px;
  --ds-space-10: 72px;

  /* Typography Scale */
  --ds-font-family: var(--brand-font, -apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif);
  --ds-font-xs: 12px;
  --ds-font-sm: 14px;
  --ds-font-base: 16px;
  --ds-font-md: 18px;
  --ds-font-lg: 22px;
  --ds-font-xl: 28px;
  --ds-font-2xl: 34px;
  --ds-line-tight: 1.2;
  --ds-line-base: 1.5;
  --ds-line-relaxed: 1.7;

  /* Transitions */
  --ds-transition-fast: 120ms ease;
  --ds-transition-base: 200ms ease;
  --ds-transition-slow: 320ms ease;

  /* Focus */
  --ds-focus-ring: 0 0 0 3px rgba(10,132,255,0.35);
}

/* Dark Mode Tokens */
[data-theme="dark"] {
  --ds-color-bg: #0b0f14;
  --ds-color-bg-alt: #111827;
  --ds-color-surface: #1b2330;
  --ds-color-surface-alt: #223042;
  --ds-color-border: rgba(255,255,255,0.10);
  --ds-color-text: #f5f7fa;
  --ds-color-text-muted: #9ca3af;
  --ds-shadow-sm: 0 1px 2px rgba(0,0,0,0.50);
  --ds-shadow-md: 0 4px 12px rgba(0,0,0,0.55);
  --ds-shadow-lg: 0 12px 32px rgba(0,0,0,0.65);
  
  /* Player v4 result card dark mode */
  --sc-card-bg: #1b2330;
  --sc-border: rgba(255,255,255,0.15);
  --sc-text: #f5f7fa;
}

/* ========================= */
/* 2. BASE ELEMENT NORMALIZE */
/* ========================= */
body.sc-ds, body.sc-premium-v2 {
  background: var(--ds-color-bg);
  color: var(--ds-color-text);
  font-family: var(--ds-font-family);
  line-height: var(--ds-line-base);
  -webkit-font-smoothing: antialiased;
}

.sc-container, .scp-container, .ds-container {
  max-width: var(--ds-container-max);
  margin: 0 auto;
  padding: 0 var(--ds-space-6);
}

/* ========================= */
/* 3. UTILITY CLASSES         */
/* ========================= */
/* Spacing (Margin) */
.m-0 { margin:0 !important; }
.m-1 { margin: var(--ds-space-1) !important; }
.m-2 { margin: var(--ds-space-2) !important; }
.m-3 { margin: var(--ds-space-3) !important; }
.m-4 { margin: var(--ds-space-4) !important; }
.m-5 { margin: var(--ds-space-5) !important; }
.m-6 { margin: var(--ds-space-6) !important; }
.mt-1 { margin-top: var(--ds-space-1) !important; }
.mt-2 { margin-top: var(--ds-space-2) !important; }
.mt-3 { margin-top: var(--ds-space-3) !important; }
.mt-4 { margin-top: var(--ds-space-4) !important; }
.mt-5 { margin-top: var(--ds-space-5) !important; }
.mt-6 { margin-top: var(--ds-space-6) !important; }
.mb-1 { margin-bottom: var(--ds-space-1) !important; }
.mb-2 { margin-bottom: var(--ds-space-2) !important; }
.mb-3 { margin-bottom: var(--ds-space-3) !important; }
.mb-4 { margin-bottom: var(--ds-space-4) !important; }
.mb-5 { margin-bottom: var(--ds-space-5) !important; }
.mb-6 { margin-bottom: var(--ds-space-6) !important; }

/* Spacing (Padding) */
.p-0 { padding:0 !important; }
.p-1 { padding: var(--ds-space-1) !important; }
.p-2 { padding: var(--ds-space-2) !important; }
.p-3 { padding: var(--ds-space-3) !important; }
.p-4 { padding: var(--ds-space-4) !important; }
.p-5 { padding: var(--ds-space-5) !important; }
.p-6 { padding: var(--ds-space-6) !important; }

/* Display & Layout */
.flex { display:flex !important; }
.inline-flex { display:inline-flex !important; }
.grid { display:grid !important; }
.flex-col { flex-direction:column !important; }
.flex-row { flex-direction:row !important; }
.flex-wrap { flex-wrap:wrap !important; }
.items-center { align-items:center !important; }
.items-start { align-items:flex-start !important; }
.items-end { align-items:flex-end !important; }
.justify-center { justify-content:center !important; }
.justify-between { justify-content:space-between !important; }
.gap-2 { gap: var(--ds-space-2) !important; }
.gap-3 { gap: var(--ds-space-3) !important; }
.gap-4 { gap: var(--ds-space-4) !important; }
.gap-5 { gap: var(--ds-space-5) !important; }

/* Typography */
.text-xs { font-size: var(--ds-font-xs) !important; }
.text-sm { font-size: var(--ds-font-sm) !important; }
.text-base { font-size: var(--ds-font-base) !important; }
.text-md { font-size: var(--ds-font-md) !important; }
.text-lg { font-size: var(--ds-font-lg) !important; }
.text-xl { font-size: var(--ds-font-xl) !important; }
.text-2xl { font-size: var(--ds-font-2xl) !important; }
.font-light { font-weight:300 !important; }
.font-normal { font-weight:400 !important; }
.font-medium { font-weight:500 !important; }
.font-semibold { font-weight:600 !important; }
.font-bold { font-weight:700 !important; }
.leading-tight { line-height: var(--ds-line-tight) !important; }
.leading-base { line-height: var(--ds-line-base) !important; }
.leading-relaxed { line-height: var(--ds-line-relaxed) !important; }

/* Color Helpers */
.text-muted { color: var(--ds-color-text-muted) !important; }
.bg-surface { background: var(--ds-color-surface) !important; }
.bg-surface-alt { background: var(--ds-color-surface-alt) !important; }
.border { border:1px solid var(--ds-color-border) !important; }
.shadow-sm { box-shadow: var(--ds-shadow-sm) !important; }
.shadow-md { box-shadow: var(--ds-shadow-md) !important; }
.shadow-lg { box-shadow: var(--ds-shadow-lg) !important; }
.rounded-sm { border-radius: var(--ds-radius-sm) !important; }
.rounded-md { border-radius: var(--ds-radius-md) !important; }
.rounded-lg { border-radius: var(--ds-radius-lg) !important; }
.rounded-pill { border-radius: var(--ds-radius-pill) !important; }

/* Width */
.w-full { width:100% !important; }
.max-w-md { max-width:640px !important; }
.max-w-lg { max-width:840px !important; }
.max-w-xl { max-width:1040px !important; }

/* Visibility */
.hidden { display:none !important; }

/* ========================= */
/* 4. COMPONENT PRIMITIVES    */
/* ========================= */
.ds-card { background: var(--ds-color-surface); border:1px solid var(--ds-color-border); border-radius: var(--ds-radius-lg); padding: var(--ds-space-6); box-shadow: var(--ds-shadow-sm); transition: box-shadow var(--ds-transition-base), transform var(--ds-transition-base); }
.ds-card:hover { box-shadow: var(--ds-shadow-md); transform: translateY(-2px); }

.ds-badge { display:inline-flex; align-items:center; gap:4px; font-size: var(--ds-font-xs); font-weight:600; padding:4px 10px; background: var(--ds-color-bg-alt); border:1px solid var(--ds-color-border); border-radius: var(--ds-radius-pill); color: var(--ds-color-text); }
.ds-badge-primary { background: var(--ds-color-primary); border-color: var(--ds-color-primary-hover); color:#fff; }
.ds-badge-outline { background: transparent; }

.ds-btn { display:inline-flex; align-items:center; gap:8px; font-size: var(--ds-font-sm); font-weight:600; padding:12px 20px; border-radius: var(--ds-radius-md); border:1px solid var(--ds-color-border); background: var(--ds-color-bg-alt); color: var(--ds-color-text); cursor:pointer; transition: background var(--ds-transition-fast), box-shadow var(--ds-transition-fast), transform var(--ds-transition-fast); text-decoration:none; }
.ds-btn:hover { background: var(--ds-color-surface-alt); }
.ds-btn:focus { outline:none; box-shadow: var(--ds-focus-ring); }
.ds-btn-primary { background: var(--ds-color-primary); color:#fff; border-color: var(--ds-color-primary-hover); }
.ds-btn-primary:hover { background: var(--ds-color-primary-hover); }
.ds-btn-danger { background: var(--ds-color-danger); color:#fff; border-color: var(--ds-color-danger); }
.ds-btn-danger:hover { filter: brightness(1.05); }
.ds-btn-ghost { background: transparent; }

.ds-input { width:100%; padding:12px 14px; border:1px solid var(--ds-color-border); border-radius: var(--ds-radius-md); background: var(--ds-color-surface); color: var(--ds-color-text); font-size: var(--ds-font-sm); }
.ds-input:focus { outline:none; box-shadow: var(--ds-focus-ring); border-color: var(--ds-color-primary); }

.ds-divider { height:1px; background: var(--ds-color-border); margin: var(--ds-space-6) 0; }

/* Footer primitive (to replace game footer inline style later) */
.ds-footer { background: var(--ds-color-bg-alt); padding: var(--ds-space-8) 0 var(--ds-space-6); border-top:1px solid var(--ds-color-border); margin-top: var(--ds-space-8); font-size: var(--ds-font-sm); }
.ds-footer-copy { text-align:center; margin-top: var(--ds-space-6); padding-top: var(--ds-space-4); border-top:1px solid var(--ds-color-border); color: var(--ds-color-text-muted); }

/* ========================= */
/* 5. RESPONSIVE HELPERS      */
/* ========================= */
@media (max-width: 900px) {
  .hide-md { display:none !important; }
}
@media (max-width: 640px) {
  .hide-sm { display:none !important; }
  .ds-card { padding: var(--ds-space-4); }
  .ds-btn { padding:10px 16px; }
}