/* ============================================
   F1 PREDICTION LEAGUE — BASE
   Reset · Design Tokens · Typography
   ============================================ */

/* --- CSS Reset (Modern) --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

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

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* --- Design Tokens --- */
:root {
  /* Palette — 6 values */
  --bg-base: #0A0A0A;
  --bg-surface: #141414;
  --bg-elevated: #1C1C1C;
  --accent: #E8002D;
  --accent-hover: #FF1744;
  --accent-dim: rgba(232, 0, 45, 0.15);
  --text-muted: #888888;
  --text-primary: #FFFFFF;
  --text-secondary: #CCCCCC;

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-bg-hover: rgba(255, 255, 255, 0.07);
  --glass-border: rgba(255, 255, 255, 0.07);
  --glass-border-hover: rgba(255, 255, 255, 0.12);
  --blur: blur(12px);

  /* Status colors */
  --status-upcoming: #6B7280;
  --status-active: #22C55E;
  --status-locked: #F59E0B;
  --status-completed: #3B82F6;
  --sprint-amber: #F59E0B;
  --gold: #FFD700;
  --success: #22C55E;
  --error: #EF4444;
  --warning: #F59E0B;

  /* Typography */
  --font-display: 'Exo 2', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-data: 'JetBrains Mono', 'Fira Code', monospace;

  /* Font sizes */
  --text-xs: 0.6875rem;    /* 11px */
  --text-sm: 0.75rem;      /* 12px */
  --text-base: 0.875rem;   /* 14px */
  --text-md: 1rem;         /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 2rem;        /* 32px */
  --text-4xl: 2.5rem;      /* 40px */

  /* Font weights */
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;

  /* Spacing */
  --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 */

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

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  --transition-drag: 150ms ease;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(232, 0, 45, 0.3);

  /* Z-index scale */
  --z-base: 1;
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-overlay: 30;
  --z-modal: 40;
  --z-toast: 50;
}

/* --- Base Styles --- */
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-normal);
  color: var(--text-primary);
  background-color: var(--bg-base);
}

/* --- Typography Classes --- */
.text-display {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.text-display-lg {
  font-family: var(--font-display);
  font-weight: var(--weight-extrabold);
  font-size: var(--text-3xl);
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-transform: uppercase;
}

.text-display-sm {
  font-family: var(--font-display);
  font-weight: var(--weight-semibold);
  font-size: var(--text-lg);
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.text-body {
  font-family: var(--font-body);
  font-weight: var(--weight-normal);
  line-height: 1.5;
}

.text-body-sm {
  font-family: var(--font-body);
  font-weight: var(--weight-normal);
  font-size: var(--text-sm);
  line-height: 1.4;
}

.text-data {
  font-family: var(--font-data);
  font-weight: var(--weight-medium);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

.text-data-lg {
  font-family: var(--font-data);
  font-weight: var(--weight-bold);
  font-size: var(--text-2xl);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

.text-label {
  font-family: var(--font-body);
  font-weight: var(--weight-medium);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.text-muted {
  color: var(--text-muted);
}

.text-accent {
  color: var(--accent);
}

.text-success {
  color: var(--success);
}

.text-error {
  color: var(--error);
}

/* --- Focus Ring --- */
*:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Remove default focus for mouse users */
*:focus:not(:focus-visible) {
  outline: none;
}

/* --- Selection --- */
::selection {
  background-color: var(--accent);
  color: var(--text-primary);
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-surface);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}

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