/* ==========================================================================
   Variables
   ========================================================================== */
:root {
  /* Colors — Light Theme */
  --color-background: #ffffff;
  --color-surface: #f8fafc;
  --color-surface-alt: #f1f5f9;
  --color-text: #1f2937;
  --color-text-muted: #6b7280;
  --color-border-subtle: #e5e7eb;
  --color-border-strong: #d1d5db;
  --color-primary: #2563eb;
  --color-primary-soft: rgba(37, 99, 235, 0.08);
  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-danger: #dc2626;

  --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: #1f2937;
  --color-gray-900: #111827;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: 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 */

  --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 */
  --radius-sm: 0.25rem;  /* 4px */
  --radius-md: 0.5rem;   /* 8px */
  --radius-lg: 0.75rem;  /* 12px */
  --radius-xl: 1rem;     /* 16px */
  --radius-full: 9999px;

  /* Shadows */
  --shadow-soft: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-soft-lg: 0 12px 40px rgba(0, 0, 0, 0.08);
  --shadow-focus: 0 0 0 2px rgba(37, 99, 235, 0.4);

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

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

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  margin: 0;
}

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

ul[role='list'],
ol[role='list'] {
  list-style: none;
}

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

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

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

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

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* Remove animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================================================
   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);
  -webkit-font-smoothing: antialiased;
}

main {
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-gray-900);
}

h1 {
  font-size: clamp(2rem, 3vw, var(--font-size-4xl));
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(1.5rem, 2.4vw, var(--font-size-3xl));
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-3);
}

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

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

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

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

strong {
  font-weight: 600;
}

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

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

a:hover {
  opacity: 0.9;
}

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

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

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

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

button:focus-visible,
[role='button']:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

/* Visually hidden, but accessible to screen readers */
.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: 72rem; /* 1152px, good for comparison grids */
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 1024px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

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

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

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

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

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

.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;
}

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

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

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

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

/* 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);
  }
}

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

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

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

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  line-height: 1.2;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.badge-success {
  background-color: rgba(22, 163, 74, 0.1);
  color: #15803d;
}

.badge-neutral {
  background-color: rgba(107, 114, 128, 0.1);
  color: var(--color-gray-600);
}

/* Spacing utilities (minimal set) */
.mt-4 { margin-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.pt-4 { padding-top: var(--space-4); }
.pb-4 { padding-bottom: var(--space-4); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.p-4 { padding: var(--space-4); }

/* ==========================================================================
   Components
   ========================================================================== */
/* Buttons - primary CTAs for betting offers */
.button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
  background-color: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
  transition:
    background-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast),
    border-color var(--transition-fast),
    opacity var(--transition-fast);
}

.button:hover,
.btn:hover {
  background-color: #1d4ed8;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
  transform: translateY(-1px);
}

.button:active,
.btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

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

.button--ghost,
.btn--ghost {
  background-color: transparent;
  color: var(--color-gray-700);
  border-color: var(--color-border-strong);
  box-shadow: none;
}

.button--ghost:hover,
.btn--ghost:hover {
  background-color: var(--color-gray-50);
}

.button--outline,
.btn--outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: none;
}

.button--outline:hover,
.btn--outline:hover {
  background-color: var(--color-primary-soft);
}

/* Form controls for filters and signup inputs */
input[type='text'],
input[type='email'],
input[type='number'],
input[type='search'],
input[type='tel'],
input[type='url'],
input[type='password'],
select,
textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: #ffffff;
  color: var(--color-gray-900);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-gray-400);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  border-color: rgba(37, 99, 235, 0.6);
  box-shadow: var(--shadow-focus);
  outline: none;
}

input:disabled,
select:disabled,
textarea:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

/* Card component - used for comparison-style offer cards */
.card {
  position: relative;
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-subtle);
  padding: var(--space-4);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.card--highlight {
  border-color: rgba(22, 163, 74, 0.5);
  box-shadow: 0 8px 30px rgba(22, 163, 74, 0.1);
}

.card-header,
.card-body,
.card-footer {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

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

.card-footer {
  margin-top: var(--space-4);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-gray-900);
}

.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);
}

/* Offer-specific layout helper for odds/comparison rows */
.offer-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

@media (max-width: 640px) {
  .offer-row {
    grid-template-columns: 1fr;
    align-items: flex-start;
  }
}

.offer-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.offer-value {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-gray-900);
}

.offer-value--highlight {
  color: var(--color-success);
}

/* Tagline / disclaimer text for responsible betting messaging */
.disclaimer {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* Header bar base - for brand + trust indicators */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--color-border-subtle);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: var(--font-size-sm);
  color: var(--color-gray-900);
}

.site-logo-mark {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 0.35rem;
  background: radial-gradient(circle at 20% 0%, #22c55e, #16a34a 45%, #064e3b 100%);
}

/* Footer base */
.site-footer {
  border-top: 1px solid var(--color-border-subtle);
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
  background-color: var(--color-surface);
}

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

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