/* ============================================
   WELBY HEALTH — Design Tokens
   Clinical Intelligence Demo Portal
   ============================================ */

:root {
  /* Brand Colors */
  --welby-black: #2e434b;
  --welby-dark-blue: #547d8a;
  --welby-medium-blue: #94c7d6;
  --welby-light-blue: #ccf2ff;
  --welby-red: #f05245;
  --welby-yellow: #fbb465;
  --welby-white: #ffffff;

  /* Dark Mode Surfaces (Mission Control) */
  --surface-primary: #1a2a30;
  --surface-secondary: #22353d;
  --surface-card: rgba(46, 67, 75, 0.6);
  --surface-card-hover: rgba(46, 67, 75, 0.85);
  --surface-glass: rgba(148, 199, 214, 0.08);
  --surface-glass-border: rgba(148, 199, 214, 0.15);

  /* Text */
  --text-primary: #e8f4f8;
  --text-secondary: #94c7d6;
  --text-muted: rgba(148, 199, 214, 0.5);
  --text-on-accent: #ffffff;

  /* Acuity / Status Colors */
  --status-stable: #4ade80;
  --status-stable-glow: rgba(74, 222, 128, 0.3);
  --status-warning: #fbb465;
  --status-warning-glow: rgba(251, 180, 101, 0.3);
  --status-critical: #f05245;
  --status-critical-glow: rgba(240, 82, 69, 0.4);
  --status-info: #94c7d6;
  --status-info-glow: rgba(148, 199, 214, 0.3);

  /* Glow Effects */
  --glow-blue: 0 0 20px rgba(148, 199, 214, 0.3), 0 0 40px rgba(148, 199, 214, 0.1);
  --glow-blue-strong: 0 0 20px rgba(148, 199, 214, 0.5), 0 0 60px rgba(148, 199, 214, 0.2);
  --glow-red: 0 0 20px rgba(240, 82, 69, 0.4), 0 0 40px rgba(240, 82, 69, 0.15);
  --glow-yellow: 0 0 20px rgba(251, 180, 101, 0.3), 0 0 40px rgba(251, 180, 101, 0.1);
  --glow-green: 0 0 20px rgba(74, 222, 128, 0.3), 0 0 40px rgba(74, 222, 128, 0.1);

  /* Typography */
  --font-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-accent: 'Yrsa', Georgia, 'Times New Roman', serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;
  --text-6xl: 4.5rem;

  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-dramatic: 800ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Navigation */
  --nav-bg: rgba(26, 42, 48, 0.85);
  --modal-bg: rgba(0, 0, 0, 0.7);
  --modal-content-bg: #22353d;

  /* Z-Index Scale */
  --z-base: 1;
  --z-card: 10;
  --z-nav: 100;
  --z-overlay: 500;
  --z-modal: 1000;
  --z-toast: 2000;
}

/* ============================================
   LIGHT MODE OVERRIDES
   ============================================ */
[data-theme="light"] {
  --surface-primary: #f0f5f7;
  --surface-secondary: #e4ecef;
  --surface-card: rgba(255, 255, 255, 0.85);
  --surface-card-hover: rgba(255, 255, 255, 0.95);
  --surface-glass: rgba(84, 125, 138, 0.08);
  --surface-glass-border: rgba(84, 125, 138, 0.18);

  --text-primary: #1a2a30;
  --text-secondary: #3d6570;
  --text-muted: rgba(46, 67, 75, 0.55);
  --text-on-accent: #ffffff;

  --status-stable: #16a34a;
  --status-stable-glow: rgba(22, 163, 74, 0.2);
  --status-warning: #d97706;
  --status-warning-glow: rgba(217, 119, 6, 0.2);
  --status-critical: #dc2626;
  --status-critical-glow: rgba(220, 38, 38, 0.25);
  --status-info: #547d8a;
  --status-info-glow: rgba(84, 125, 138, 0.2);

  --glow-blue: 0 2px 12px rgba(84, 125, 138, 0.15), 0 0 20px rgba(148, 199, 214, 0.08);
  --glow-blue-strong: 0 4px 20px rgba(84, 125, 138, 0.25), 0 0 30px rgba(148, 199, 214, 0.12);
  --glow-red: 0 2px 12px rgba(220, 38, 38, 0.2), 0 0 20px rgba(220, 38, 38, 0.08);
  --glow-yellow: 0 2px 12px rgba(217, 119, 6, 0.15), 0 0 20px rgba(217, 119, 6, 0.06);
  --glow-green: 0 2px 12px rgba(22, 163, 74, 0.15), 0 0 20px rgba(22, 163, 74, 0.06);

  --nav-bg: rgba(240, 245, 247, 0.9);
  --modal-bg: rgba(26, 42, 48, 0.5);
  --modal-content-bg: #f5f9fa;
}

/* Theme toggle button */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 6px 12px;
  background: var(--surface-glass);
  border: 1px solid var(--surface-glass-border);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-primary);
  margin-left: var(--space-md);
}

.theme-toggle:hover {
  color: var(--text-primary);
  background: var(--surface-glass-border);
}

.theme-toggle-icon {
  font-size: 1rem;
  line-height: 1;
  transition: transform var(--transition-base);
}

.theme-toggle:hover .theme-toggle-icon {
  transform: rotate(30deg);
}