:root {
  /* Color Palette */
  --color-background: #050b16; /* deep navy background */
  --color-surface: #0f1826; /* elevated surface */
  --color-surface-alt: #141f30;
  --color-text: #f5f7fb;
  --color-text-muted: #a9b4cc;
  --color-primary: #1f6fe5; /* actionable CTAs */
  --color-primary-soft: rgba(31, 111, 229, 0.14);
  --color-success: #4bbf73; /* soft green accent */
  --color-warning: #f5a623;
  --color-danger: #ff4d4f;
  --color-border-subtle: #222b3a;
  --color-border-strong: #3a4760;
  --color-neutral-50: #0b101b;
  --color-neutral-100: #151b26;
  --color-neutral-200: #1f2633;
  --color-neutral-300: #2a3242;
  --color-neutral-400: #3b455a;
  --color-neutral-500: #4b5670;
  --color-neutral-600: #64708a;
  --color-neutral-700: #808aa0;
  --color-neutral-800: #a4acc0;
  --color-neutral-900: #d3d9ea;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: SFMono-Regular, ui-monospace, 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 (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-7: 1.75rem;  /* 28px */
  --space-8: 2rem;     /* 32px */
  --space-9: 2.5rem;   /* 40px */
  --space-10: 3rem;    /* 48px */
  --space-12: 3.5rem;  /* 56px */
  --space-14: 4rem;    /* 64px */
  --space-16: 4.5rem;  /* 72px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

  /* Radius */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 999px;

  /* Shadows (subtle for trustworthy, non-flashy UI) */
  --shadow-sm: 0 4px 10px rgba(0, 0, 0, 0.18);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-soft-inner: inset 0 1px 0 rgba(255, 255, 255, 0.02);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-normal: 180ms ease-out;
  --transition-slow: 250ms ease-out;
}

/* ===================================
   Reset / Normalize
   =================================== */

*, *::before, *::after {
  box-sizing: border-box;
}

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

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

body {
  min-height: 100vh;
}

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

picture {
  display: block;
}

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

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

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

h1,
 h2,
 h3,
 h4,
 h5,
 h6,
 p,
 figure {
  margin: 0;
}

fieldset {
  border: none;
  margin: 0;
  padding: 0;
}

/* ===================================
   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-background);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  display: block;
}

h1,
 h2,
 h3,
 h4,
 h5,
 h6 {
  font-weight: 600;
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

h1 {
  font-size: var(--font-size-4xl);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
}

h2 {
  font-size: var(--font-size-3xl);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-3);
}

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

h5 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

h6 {
  font-size: var(--font-size-md);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

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

strong {
  font-weight: 600;
}

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

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

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

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

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

/* ===================================
   Accessibility & Motion
   =================================== */

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

:focus:not(:focus-visible) {
  outline: none;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

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

/* ===================================
   Layout Utilities
   =================================== */

.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
  max-width: 1120px; /* controlled grid for comparison layout */
}

@media (min-width: 1200px) {
  .container {
    max-width: 1200px;
  }
}

/* Flex helpers */

.flex {
  display: flex;
}

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

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

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

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

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

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

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

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

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

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

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

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

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

/* Grid helpers */

.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);
  }
}

/* Spacing utilities (minimal set) */

.mt-4 { margin-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-6 { margin-bottom: var(--space-6); }
.pt-4 { padding-top: var(--space-4); }
.pb-4 { padding-bottom: var(--space-4); }

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

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

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

/* Buttons: primary CTA, subtle hover, clear disabled state */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition:
    background-color var(--transition-normal),
    border-color var(--transition-normal),
    color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #2148c6);
  color: var(--color-text)!important;
  box-shadow: var(--shadow-sm);
}

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

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

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

.btn-ghost:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

.btn-success {
  background-color: var(--color-success);
  color: #041018;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-success);
  outline-offset: 3px;
}

/* Inputs: consistent padding and focus state */

.input,
select,
textarea {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-neutral-50);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-snug);
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

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

.input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary-soft);
}

.input[disabled],
select[disabled],
textarea[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Card: comparison-style for betting offers */

.card {
  position: relative;
  background: radial-gradient(circle at 0 0, rgba(79, 120, 255, 0.09), transparent 55%),
              var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  border: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

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

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.card-highlight {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-pill);
  background-color: rgba(75, 191, 115, 0.12);
  color: var(--color-success);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

/* Tag/pill helpers for odds, verification, etc. */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  gap: 0.25rem;
}

.badge-verified {
  border-color: rgba(75, 191, 115, 0.4);
  color: var(--color-success);
}

.badge-warning {
  border-color: rgba(245, 166, 35, 0.5);
  color: var(--color-warning);
}

/* Comparison list container for offers */

.offer-list {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr) minmax(0, 0.9fr);
  gap: var(--space-3);
}

@media (max-width: 960px) {
  .offer-list {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Typography helpers for numerical odds */

.odds-value {
  font-variant-numeric: tabular-nums;
  font-size: var(--font-size-xl);
  font-weight: 600;
}

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

/* Top-strip for safe & responsible messaging */

.notice-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  background: linear-gradient(90deg, rgba(75, 191, 115, 0.18), transparent 80%);
  color: var(--color-text);
  font-size: var(--font-size-xs);
}

.notice-bar a {
  color: inherit;
  text-decoration: underline;
}

/* Misc */

.hr-subtle {
  border: 0;
  border-top: 1px solid var(--color-border-subtle);
  margin: var(--space-4) 0;
}

.badge-brand {
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-neutral-800);
}

/* Ensure minimal visual noise for a clean, minimalist layout */

.section {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

.section-header {
  margin-bottom: var(--space-4);
}

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