/* ========================================================================
   Variables
   ======================================================================== */
:root {
  /* Color Palette - Dark, automotive, neon accents */
  --color-bg: #05070b; /* primary page background */
  --color-bg-elevated: #0b0f17; /* cards, panels */
  --color-bg-soft: #111623; /* secondary surfaces */

  --color-text: #f5f7ff;
  --color-text-muted: #9ba3c2;
  --color-text-soft: #6e7591;

  --color-primary: #00e0ff; /* cyan/teal neon accent */
  --color-primary-soft: rgba(0, 224, 255, 0.12);
  --color-primary-strong: #10f0ff;

  --color-success: #38d996;
  --color-warning: #ffb648;
  --color-danger: #ff4f64;

  --color-border-subtle: #1b2133;
  --color-border-strong: #303953;

  /* Neutral Grays */
  --gray-50: #f7f7fa;
  --gray-100: #e7e9f2;
  --gray-200: #c7cbe0;
  --gray-300: #a0a6c1;
  --gray-400: #7a819f;
  --gray-500: #5a6180;
  --gray-600: #424867;
  --gray-700: #303551;
  --gray-800: #1f2235;
  --gray-900: #111322;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Oswald", "Rajdhani", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, 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 */
  --font-size-5xl: 3rem;     /* 48px */

  --line-height-tight: 1.1;
  --line-height-snug: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing Scale (0–96px) */
  --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 */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-full: 999px;

  /* Shadows - subtle neon glow for racing feel */
  --shadow-sm: 0 4px 10px rgba(0, 0, 0, 0.6);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.75);
  --shadow-lg: 0 18px 45px rgba(0, 0, 0, 0.85);
  --shadow-glow-primary: 0 0 25px rgba(0, 224, 255, 0.35);

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

  /* Layout */
  --container-max-width: 1200px;
  --container-padding-x: var(--space-4);

  /* Focus Outline */
  --focus-ring-color: rgba(0, 224, 255, 0.9);
  --focus-ring-offset: 2px;
  --focus-ring-width: 2px;
}

/* Reduced Motion Tweaks */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0.01ms;
    --transition-normal: 0.01ms;
    --transition-slow: 0.01ms;
  }
}

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

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

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

body {
  min-height: 100vh;
}

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

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

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

p,
figure,
blockquote,
ul,
ol {
  margin: 0;
  padding: 0;
}

ul,
ol {
  list-style: none;
}

/* Remove default link underline; will style in Base */
a {
  color: inherit;
  text-decoration: none;
}

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

main {
  display: block;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text);
  margin: 0 0 var(--space-3);
}

h1 {
  font-size: clamp(2.25rem, 2.7vw + 1.5rem, var(--font-size-5xl));
  line-height: var(--line-height-tight);
}

h2 {
  font-size: clamp(1.875rem, 2.1vw + 1.2rem, var(--font-size-4xl));
  line-height: var(--line-height-tight);
}

h3 {
  font-size: var(--font-size-2xl);
  line-height: var(--line-height-snug);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-md);
}

p {
  margin-bottom: var(--space-3);
  color: var(--color-text-muted);
}

strong,
b {
  font-weight: 600;
}

small {
  font-size: var(--font-size-sm);
}

a {
  color: var(--color-primary);
  transition: color var(--transition-fast), text-shadow var(--transition-fast);
}

a:hover {
  color: var(--color-primary-strong);
  text-shadow: 0 0 12px rgba(0, 224, 255, 0.4);
}

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

hr {
  border: 0;
  border-top: 1px solid var(--color-border-subtle);
  margin: var(--space-6) 0;
}

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

pre {
  margin: 0;
}

/* ========================================================================
   Accessibility & Focus Styles
   ======================================================================== */
:focus {
  outline: none;
}

:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset);
}

/* Screen reader only */
.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(--container-padding-x);
}

.section {
  padding-block: var(--space-10);
}

.section--dense {
  padding-block: var(--space-6);
}

/* Spacing utilities (vertical margin helpers) */
.stack-xs > * + * {
  margin-top: var(--space-2);
}

.stack-sm > * + * {
  margin-top: var(--space-3);
}

.stack-md > * + * {
  margin-top: var(--space-4);
}

.stack-lg > * + * {
  margin-top: var(--space-6);
}

/* Flex Utilities */
.flex {
  display: flex;
}

.inline-flex {
  display: inline-flex;
}

.flex-row {
  flex-direction: row;
}

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

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

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

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

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

.gap-sm {
  gap: var(--space-3);
}

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

.gap-lg {
  gap: var(--space-6);
}

/* Grid Utilities */
.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

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

/* Alignment helpers */
.text-center {
  text-align: center;
}

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

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

/* Width helpers */
.w-full {
  width: 100%;
}

/* ========================================================================
   Components - Buttons
   ======================================================================== */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-strong);
  background: radial-gradient(circle at 10% 0, rgba(0, 224, 255, 0.3) 0, rgba(0, 224, 255, 0) 55%),
    linear-gradient(135deg, #151a24, #05070b);
  color: var(--color-text);
  font-weight: 600;
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
    border-color var(--transition-fast), background var(--transition-normal),
    color var(--transition-fast);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md), var(--shadow-glow-primary);
  border-color: var(--color-primary);
}

.btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.6;
  box-shadow: none;
}

.btn--primary {
  background: linear-gradient(135deg, #00e0ff, #10f0ff);
  color: #020308;
  border-color: transparent;
}

.btn--primary:hover {
  background: linear-gradient(135deg, #10f0ff, #63f7ff);
  color: #020308;
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-border-strong);
}

.btn--outline {
  background: transparent;
  border-color: var(--color-primary);
}

.btn--icon {
  padding-inline: 1.1rem;
}

/* Store buttons (Google Play / App Store) */
.btn-store {
  padding: 0;
  height: 3.5rem;
  border-radius: var(--radius-md);
  background: #000;
  border-color: #202020;
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0.02em;
  overflow: hidden;
}

.btn-store img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* ========================================================================
   Components - Form Controls
   ======================================================================== */
.input,
textarea,
select {
  width: 100%;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
  background-color: #050813;
  color: var(--color-text);
  font-size: var(--font-size-sm);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.7);
  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 {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), 0 0 18px rgba(0, 224, 255, 0.35);
}

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

label {
  display: block;
  margin-bottom: var(--space-1);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-soft);
}

.form-help {
  margin-top: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--color-text-soft);
}

.form-error {
  margin-top: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}

/* ========================================================================
   Components - Card / Panels
   ======================================================================== */
.card {
  position: relative;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at top left, rgba(0, 224, 255, 0.12) 0, rgba(0, 224, 255, 0) 45%),
    linear-gradient(145deg, #05070b, #0b0f17);
  border: 1px solid var(--color-border-subtle);
  padding: var(--space-5);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 224, 255, 0.08), transparent 40%, transparent 60%, rgba(255, 255, 255, 0.03));
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}

.card:hover::before {
  opacity: 1;
}

.card--bordered {
  border-style: dashed;
}

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

.card-title {
  margin-bottom: var(--space-1);
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
}

/* ========================================================================
   Hero & Thematic Helpers for Drive Easy Hire / CarX Drift Racing 2
   ======================================================================== */
.hero {
  position: relative;
  padding-block: var(--space-16);
  background: radial-gradient(circle at top, rgba(0, 224, 255, 0.22) 0, rgba(0, 224, 255, 0) 55%),
    linear-gradient(160deg, #05070b 0, #05070b 40%, #05070b 60%, #020309 100%);
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: -40%;
  background: conic-gradient(from 220deg, rgba(0, 224, 255, 0.06), rgba(255, 255, 255, 0.02), transparent 40%, transparent 80%, rgba(0, 224, 255, 0.1));
  mix-blend-mode: screen;
  opacity: 0.7;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 224, 255, 0.4);
  background: rgba(5, 7, 11, 0.9);
  font-size: var(--font-size-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary-strong);
}

.hero-title {
  margin-top: var(--space-3);
  max-width: 20ch;
}

.hero-subtitle {
  margin-top: var(--space-3);
  max-width: 48ch;
  color: var(--color-text-muted);
}

.hero-cta {
  margin-top: var(--space-5);
  display: flex;
  align-items: flex-end;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.hero-cta .btn {
  height: 3.5rem;
}

.hero-cta .btn--primary {
  min-width: 150px;
}

.hero-cta .btn + .btn {
  margin-left: 0;
}

@media (max-width: 768px) {
  .hero {
    padding-block: var(--space-12);
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-cta .btn + .btn {
    margin-left: 0;
  }
}

/* ========================================================================
   Motion Preferences
   ======================================================================== */
@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;
  }
}