/**
 * ==============================================================================
 * LYFMATESTRIX DESIGN SYSTEM (MOBILE-MATCHED STRIX ROYAL BLUE #4361EE)
 * Flawless Cross-Platform Architecture: Mobile, Tablet (iPad), & Desktop (PC)
 * ==============================================================================
 */

:root {
  /* Core Brand Tokens (Exact match to mobile classicDefaultTheme #4361EE) */
  --primary: #4361EE;
  --primary-hover: #3751D9;
  --primary-light: #EEF2FF;
  --primary-subtle: rgba(67, 97, 238, 0.08);
  --primary-glow: rgba(67, 97, 238, 0.20);
  --primary-gradient: linear-gradient(135deg, #4F6AF4 0%, #4361EE 50%, #3751D9 100%);
  --brand-gradient-text: linear-gradient(135deg, #0F172A 20%, #4361EE 100%);

  /* Neutrals & Surfaces */
  --bg-body: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-secondary: #F1F5F9;
  --bg-surface-elevated: #FFFFFF;
  --bg-subtle: #F1F5F9;
  --bg-primary: #FFFFFF;
  --bg-secondary: #F1F5F9;
  --bg-tertiary: #EEF2FF;

  /* Typography Colors */
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --text-inverse: #FFFFFF;

  /* Borders & Dividers */
  --border-subtle: #E2E8F0;
  --border-medium: #CBD5E1;
  --border-accent: rgba(67, 97, 238, 0.35);

  /* Semantic Accents */
  --success: #10B981;
  --success-bg: #ECFDF5;
  --success-border: #A7F3D0;
  --accent-emerald: #10B981;
  --accent-cyan: #3A57E8;
  --warning: #F59E0B;
  --warning-bg: #FFFBEB;
  --warning-border: #FDE68A;
  --error: #EF4444;
  --error-bg: #FEF2F2;
  --error-border: #FECACA;

  /* Shadows (Coupled with subtle Indigo hues for premium depth) */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 2px 8px -2px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 25px -5px rgba(67, 97, 238, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 35px -8px rgba(67, 97, 238, 0.12), 0 10px 15px -5px rgba(15, 23, 42, 0.04);
  --shadow-card: 0 4px 20px -2px rgba(67, 97, 238, 0.06), 0 2px 6px -1px rgba(15, 23, 42, 0.04);

  /* Typography Scale */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  /* Spacing Scale */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */

  /* Border Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --radius-2xl: 30px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 250ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout Containers */
  --container-max: 1200px;
  --container-narrow: 860px;
}

/* Base Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--text-secondary);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Accessibility Focus States */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Typography Standards */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

h1 { font-size: clamp(2.15rem, 4.5vw, 3.5rem); letter-spacing: -0.035em; line-height: 1.15; }
h2 { font-size: clamp(1.65rem, 3.2vw, 2.5rem); letter-spacing: -0.025em; line-height: 1.2; }
h3 { font-size: clamp(1.2rem, 2.2vw, 1.65rem); }
h4 { font-size: 1.125rem; }

p {
  margin-bottom: var(--space-4);
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-hover);
}

ul, ol {
  list-style: none;
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1rem, 4vw, 2rem);
  padding-right: clamp(1rem, 4vw, 2rem);
}

.container-narrow {
  max-width: var(--container-narrow);
}

/* Section Spacing */
.section {
  padding-top: clamp(3rem, 7vw, 6rem);
  padding-bottom: clamp(3rem, 7vw, 6rem);
  position: relative;
}

.section-sm {
  padding-top: clamp(2rem, 5vw, 4rem);
  padding-bottom: clamp(2rem, 5vw, 4rem);
}

.section-hero {
  padding-top: calc(74px + clamp(2.5rem, 6vw, 5rem));
  padding-bottom: clamp(3rem, 7vw, 6rem);
}

/* Subtle Geometric Background */
.bg-subtle-pattern {
  background-image: radial-gradient(rgba(67, 97, 238, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* Utility Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 14px;
  background-color: var(--primary-light);
  border: 1px solid rgba(67, 97, 238, 0.2);
  border-radius: var(--radius-full);
  color: var(--primary);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1;
}

.badge-emerald {
  background-color: var(--success-bg);
  border-color: var(--success-border);
  color: var(--success);
}

.badge-muted {
  background-color: var(--bg-surface-secondary);
  border-color: var(--border-subtle);
  color: var(--text-secondary);
}

/* Skip to Content for Accessibility */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-6);
  background: var(--primary);
  color: #FFFFFF;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: 600;
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}