:root {
  /* ==========================
     Color System
     ========================== */
  --color-background: #05070b; /* deep asphalt */
  --color-surface: #0b0f16; /* elevated surfaces */
  --color-surface-muted: #141923;

  --color-text: #f5f7fa;
  --color-text-muted: #a2a9b6;
  --color-text-soft: #7b8494;

  --color-primary: #ff3b3f; /* rally accent / brake light red */
  --color-primary-soft: rgba(255, 59, 63, 0.12);
  --color-primary-strong: #ff1e28;

  --color-success: #29c46f;
  --color-warning: #ffb836;
  --color-danger: #ff4b5c;

  --color-border-subtle: #222836;
  --color-border-strong: #393f4d;

  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2933;
  --color-gray-900: #111827;

  /* Accent infographics palette (track maps, icons) */
  --color-info-blue: #2f7df6;
  --color-info-cyan: #1ac4ff;
  --color-info-amber: #ff9f1c;

  /* ==========================
     Typography Scale
     ========================== */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-heading: "Rajdhani", "Oswald", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-md: 1rem;      /* 16px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: 1.5rem;   /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem;  /* 36px */

  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* ==========================
     Spacing Scale (px)
     ========================== */
  --space-0: 0;
  --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 */

  /* ==========================
     Radius, Shadows, Transitions
     ========================== */
  --radius-none: 0;
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 999px;

  --shadow-soft: 0 12px 30px rgba(0, 0, 0, 0.4);
  --shadow-subtle: 0 6px 18px rgba(0, 0, 0, 0.35);
  --shadow-hard: 0 0 0 1px rgba(0, 0, 0, 0.8), 0 18px 40px rgba(0, 0, 0, 0.7);

  --transition-fast: 120ms ease-out;
  --transition-normal: 200ms ease-out;
  --transition-slow: 320ms ease-out;

  --container-max-width: 1120px;
}

/* Respect user motion preferences */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0ms;
    --transition-normal: 0ms;
    --transition-slow: 0ms;
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================
   Reset / Normalize
   ========================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
}

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

picture {
  display: block;
}

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

button {
  border: none;
  background: none;
  padding: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
figure,
blockquote,
dl,
dt,
dd {
  margin: 0;
}

fieldset {
  border: 0;
  margin: 0;
  padding: 0;
}

/* ==========================
   Base Styles
   ========================== */
body {
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  background-color: var(--color-background);
  color: var(--color-text);
  text-align: left;
}

main {
  display: block;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text);
  line-height: var(--line-height-tight);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(2.25rem, 3vw, 2.75rem);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(1.75rem, 2.5vw, 2.125rem);
  margin-top: var(--space-10);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: clamp(1.35rem, 2vw, 1.5rem);
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
}

h4 {
  font-size: var(--font-size-xl);
  margin-top: var(--space-4);
  margin-bottom: var(--space-2);
}

p {
  margin-top: 0;
  margin-bottom: var(--space-3);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

a {
  color: var(--color-info-cyan);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.15em;
  width: 100%;
  height: 1px;
  transform-origin: left;
  transform: scaleX(0);
  background: linear-gradient(90deg, var(--color-info-cyan), var(--color-primary));
  transition: transform var(--transition-fast);
}

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

a:hover::after {
  transform: scaleX(1);
}

a:focus-visible {
  outline: 2px solid var(--color-info-cyan);
  outline-offset: 3px;
}

code,
pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

pre {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-muted);
  overflow-x: auto;
}

hr {
  border: 0;
  border-top: 1px solid var(--color-border-subtle);
  margin: var(--space-8) 0;
}

/* ==========================
   Accessibility Helpers
   ========================== */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================
   Layout Utilities
   ========================== */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-6);
  }
}

.flex {
  display: flex;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-wrap {
  flex-wrap: wrap;
}

.gap-2 {
  gap: var(--space-2);
}

.gap-4 {
  gap: var(--space-4);
}

.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.py-6 {
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.py-10 {
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
}

.section-dark {
  background: radial-gradient(circle at top, #151b28 0, #05070b 55%, #020309 100%);
}

.section-surface {
  background-color: var(--color-surface);
}

/* ==========================
   Components
   ========================== */

/* Buttons: primary CTAs for downloads, features, FAQ */
.button,
button,
input[type="button"],
input[type="submit"],
input[type="reset"] {
  --btn-bg: var(--color-primary);
  --btn-bg-hover: var(--color-primary-strong);
  --btn-color: #ffffff;
  --btn-border: transparent;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;

  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--btn-border);
  font-weight: 600;
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;

  background: radial-gradient(circle at 0% 0%, rgba(255, 255, 255, 0.15) 0, transparent 45%),
              var(--btn-bg);
  color: var(--btn-color)!important;

  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 10px 26px rgba(0, 0, 0, 0.65);
  transition:
    background-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast),
    filter var(--transition-fast);
}



.button--ghost {
  --btn-bg: transparent;
  --btn-bg-hover: rgba(255, 255, 255, 0.06);
  --btn-border: rgba(255, 255, 255, 0.18);
  --btn-color: var(--color-text);
  box-shadow: none;
}

.button--neutral {
  --btn-bg: #1a2130;
  --btn-bg-hover: #222a3a;
  --btn-border: rgba(255, 255, 255, 0.1);
}

.button:hover,
button:hover,
input[type="button"]:hover,
input[type="submit"]:hover,
input[type="reset"]:hover {
  background-color: var(--btn-bg-hover);
  transform: translateY(-1px);
  filter: brightness(1.02);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.14), 0 16px 36px rgba(0, 0, 0, 0.75);
}

.button:active,
button:active,
input[type="button"]:active,
input[type="submit"]:active,
input[type="reset"]:active {
  transform: translateY(0);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 6px 14px rgba(0, 0, 0, 0.7);
}

.button:disabled,
button:disabled,
input[type="button"][disabled],
input[type="submit"][disabled],
input[type="reset"][disabled] {
  cursor: not-allowed;
  opacity: 0.5;
  box-shadow: none;
}

.button:focus-visible,
button:focus-visible,
input[type="button"]:focus-visible,
input[type="submit"]:focus-visible,
input[type="reset"]:focus-visible {
  outline: 2px solid var(--color-info-cyan);
  outline-offset: 3px;
}

/* Form fields: search, FAQ, newsletter, feedback */
input[type="text"],
input[type="email"],
input[type="search"],
input[type="password"],
input[type="tel"],
textarea,
select {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
  background-color: #050811;
  color: var(--color-text);
  outline: none;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-soft);
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  border-color: var(--color-info-cyan);
  box-shadow: 0 0 0 1px var(--color-info-cyan), 0 0 0 8px rgba(26, 196, 255, 0.14);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

/* Card: for sections like mechanics, tracks, FAQ items */
.card {
  position: relative;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at top left, rgba(42, 132, 255, 0.18), transparent 55%),
    radial-gradient(circle at bottom right, rgba(255, 61, 87, 0.15), transparent 60%),
    linear-gradient(135deg, #0b0f18, #050811);
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow-subtle);
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), transparent 55%);
  mix-blend-mode: soft-light;
  opacity: 0.2;
  pointer-events: none;
}

.card > * {
  position: relative;
}

.card--flat {
  background-color: var(--color-surface);
  background-image: none;
  box-shadow: none;
}

.card-header {
  margin-bottom: var(--space-3);
}

.card-title {
  font-size: var(--font-size-lg);
  text-transform: none;
  letter-spacing: 0.02em;
}

.card-meta {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-soft);
}

/* Infographic-style stat badge */
.stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  background: rgba(10, 176, 255, 0.09);
  border: 1px solid rgba(56, 189, 248, 0.4);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--color-text);
}

/* Simple top-down track-like separator */
.track-divider {
  position: relative;
  height: 1px;
  margin: var(--space-6) 0;
  background: linear-gradient(90deg, transparent, var(--color-gray-700), transparent);
}

.track-divider::before {
  content: "";
  position: absolute;
  inset: -1px auto -1px 10%;
  width: 60px;
  background-image: linear-gradient(90deg, #fefefe 50%, transparent 50%);
  background-size: 12px 1px;
  opacity: 0.7;
}

/* Tables (for car stats, comparison, track difficulty) */
.table-stats {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.table-stats thead {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.7rem;
  color: var(--color-text-soft);
}

.table-stats th,
.table-stats td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.table-stats tbody tr:nth-child(even) {
  background-color: rgba(255, 255, 255, 0.02);
}

/* ==========================
   Helper badges / labels
   ========================== */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.badge--primary {
  background-color: rgba(255, 59, 63, 0.18);
  color: #ffe1e2;
}

.badge--info {
  background-color: rgba(26, 196, 255, 0.16);
  color: #d8f6ff;
}

.badge--success {
  background-color: rgba(41, 196, 111, 0.18);
  color: #ddf7e8;
}

/* ==========================
   Media helpers
   ========================== */

.media-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: #050811;
  box-shadow: var(--shadow-soft);
}

.media-frame--16x9 > iframe,
.media-frame--16x9 > video,
.media-frame--16x9 > .media-content {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* ==========================
   End of base.css
   ========================== */