/* ========================================================================== 
   Variables
   ========================================================================== */

:root {
  /* Colors */
  --color-background: #060b1a; /* deep blue background */
  --color-surface: #0f1628; /* slightly lighter for cards */
  --color-surface-alt: #12192d;
  --color-text: #f5f7fb;
  --color-text-muted: #a5afc3;
  --color-border-subtle: #242c40;

  --color-primary: #2bb673; /* soft green accent */
  --color-primary-soft: rgba(43, 182, 115, 0.1);
  --color-primary-strong: #22a261;

  --color-success: #2bb673;
  --color-warning: #ffc857;
  --color-danger: #ff4b5c;

  --gray-50: #f9fafb;
  --gray-100: #f1f3f7;
  --gray-200: #e0e4ee;
  --gray-300: #c2c8d8;
  --gray-400: #a5afc3;
  --gray-500: #7b8499;
  --gray-600: #4c5568;
  --gray-700: #343b4b;
  --gray-800: #232837;
  --gray-900: #111624;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 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-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing scale (0–96px) */
  --space-0: 0;
  --space-1: 0.125rem; /* 2px */
  --space-2: 0.25rem;  /* 4px */
  --space-3: 0.375rem; /* 6px */
  --space-4: 0.5rem;   /* 8px */
  --space-5: 0.625rem; /* 10px */
  --space-6: 0.75rem;  /* 12px */
  --space-8: 1rem;     /* 16px */
  --space-10: 1.25rem; /* 20px */
  --space-12: 1.5rem;  /* 24px */
  --space-16: 2rem;    /* 32px */
  --space-20: 2.5rem;  /* 40px */
  --space-24: 3rem;    /* 48px */
  --space-32: 4rem;    /* 64px */
  --space-40: 5rem;    /* 80px */
  --space-48: 6rem;    /* 96px */

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-sm: 0 4px 10px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.45);
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.55);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-normal: 180ms ease-out;
  --transition-slow: 240ms ease-out;

  /* Layout */
  --container-max-width: 1120px;
}

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

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

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

body {
  margin: 0;
}

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

ol,
ul {
  list-style: none;
}

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

button,
input,
textarea,
select {
  margin: 0;
  font: inherit;
  color: inherit;
}

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

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

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

/* Improve text rendering */
body,
input,
button,
textarea,
select {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================================================================== 
   Base Styles
   ========================================================================== */

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  background-color: var(--color-background);
  color: var(--color-text);
  min-height: 100vh;
}

main {
  min-height: 60vh;
}

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

h1 {
  font-size: clamp(2rem, 3vw, 2.5rem); /* 32–40px */
  letter-spacing: -0.03em;
  margin-bottom: var(--space-16);
}

h2 {
  font-size: clamp(1.75rem, 2.4vw, 2.125rem);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-12);
}

h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-8);
}

h4 {
  font-size: 1.25rem;
  margin-bottom: var(--space-6);
}

h5 {
  font-size: 1.125rem;
  margin-bottom: var(--space-4);
}

h6 {
  font-size: 1rem;
  margin-bottom: var(--space-4);
}

p {
  margin-bottom: var(--space-8);
  max-width: 70ch;
  color: var(--color-text-muted);
}

strong {
  font-weight: 600;
}

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

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

/* Links with subtle underline on hover to support trust & clarity */

a {
  position: relative;
  transition: color var(--transition-normal);
}

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

a.inline-link {
  color: var(--color-primary);
}

a.inline-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.1em;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  opacity: 0;
  transform: scaleX(0.9);
  transform-origin: left;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

a.inline-link:hover::after {
  opacity: 1;
  transform: scaleX(1);
}

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

:focus {
  outline: none;
}

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

@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;
  }
}

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

/* Layout */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--space-16);
}

@media (max-width: 600px) {
  .container {
    padding-inline: var(--space-10);
  }
}

.section {
  padding-block: var(--space-32);
}

.section--tight {
  padding-block: var(--space-24);
}

.section--flush {
  padding-block: var(--space-16);
}

/* Flex */

.flex {
  display: flex;
}

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

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

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

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

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

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

.gap-md {
  gap: var(--space-10);
}

.gap-lg {
  gap: var(--space-16);
}

.gap-xl {
  gap: var(--space-24);
}

/* Grid */

.grid {
  display: grid;
  gap: var(--space-16);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-16);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-16);
}

@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Spacing utilities (minimal set for layout tuning) */

.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mt-sm { margin-top: var(--space-8) !important; }
.mb-sm { margin-bottom: var(--space-8) !important; }
.mt-md { margin-top: var(--space-16) !important; }
.mb-md { margin-bottom: var(--space-16) !important; }
.mt-lg { margin-top: var(--space-24) !important; }
.mb-lg { margin-bottom: var(--space-24) !important; }

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

/* 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;
}

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

/* Buttons – primary actions for offers & CTAs */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding-inline: var(--space-16);
  padding-block: var(--space-8);
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  transition:
    background-color var(--transition-normal),
    color var(--transition-normal),
    border-color var(--transition-normal),
    box-shadow var(--transition-normal),
    transform var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #02140a;
  box-shadow: 0 10px 30px rgba(43, 182, 115, 0.35);
}

.btn-primary:hover {
  background: var(--color-primary-strong);
  box-shadow: 0 14px 36px rgba(43, 182, 115, 0.45);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 6px 18px rgba(43, 182, 115, 0.35);
}

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

.btn-outline:hover {
  border-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.02);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
}

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

.btn-sm {
  padding-inline: var(--space-10);
  padding-block: var(--space-6);
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding-inline: var(--space-20);
  padding-block: var(--space-10);
  font-size: var(--font-size-md);
}

.btn[disabled],
.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

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

/* Inputs – for login, KYC, and search/filter controls */

.input,
select,
textarea {
  width: 100%;
  padding-inline: var(--space-10);
  padding-block: var(--space-8);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  transition:
    border-color var(--transition-normal),
    box-shadow var(--transition-normal),
    background-color var(--transition-normal);
}

.input::placeholder,
textarea::placeholder {
  color: var(--gray-500);
}

.input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  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;
}

label {
  display: inline-block;
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-10);
}

/* Cards – core for comparison-style betting offers */

.card {
  position: relative;
  background: radial-gradient(circle at top left, #1c2641 0, var(--color-surface) 52%, #080d1a 100%);
  border-radius: var(--radius-lg);
  padding: var(--space-16);
  border: 1px solid rgba(255, 255, 255, 0.02);
  box-shadow: var(--shadow-sm);
  transition:
    border-color var(--transition-normal),
    box-shadow var(--transition-normal),
    transform var(--transition-fast),
    background var(--transition-slow);
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.07);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-10);
  margin-bottom: var(--space-10);
}

.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-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.card-footer {
  margin-top: var(--space-12);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-10);
}

/* Offer-specific helper styles for betting comparisons */

.offer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  align-items: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.offer-tag {
  padding-inline: var(--space-6);
  padding-block: var(--space-3);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.68rem;
}

.offer-badge-best {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

.odds-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-500);
}

/* Informational banners for responsible betting messages */

.notice {
  border-radius: var(--radius-md);
  padding: var(--space-10) var(--space-12);
  font-size: var(--font-size-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--space-8);
  border: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(15, 22, 40, 0.9);
}

.notice--warning {
  border-color: rgba(255, 200, 87, 0.5);
}

.notice--neutral {
  border-color: rgba(255, 255, 255, 0.08);
}

.notice-icon {
  margin-top: 2px;
  opacity: 0.9;
}

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

/* Header & navigation shell (minimal base, no layout enforcement) */

.site-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(18px);
  background: linear-gradient(90deg, rgba(6, 11, 26, 0.96), rgba(6, 11, 26, 0.94));
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-12);
}

.logo {
  font-weight: 700;
  font-size: var(--font-size-lg);
  letter-spacing: -0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.nav-link {
  padding-block: var(--space-4);
  border-bottom: 1px solid transparent;
}

.nav-link--active,
.nav-link:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-primary);
}

/* Footer shell */

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-block: var(--space-16);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.site-footer a {
  color: var(--gray-300);
}

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

/* ========================================================================== 
   Helper states
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding-inline: var(--space-6);
  padding-block: var(--space-3);
  border-radius: var(--radius-pill);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-text-muted);
}

.badge--success {
  color: var(--color-success);
  background: rgba(43, 182, 115, 0.1);
}

.badge--warning {
  color: var(--color-warning);
  background: rgba(255, 200, 87, 0.12);
}

.badge--danger {
  color: var(--color-danger);
  background: rgba(255, 75, 92, 0.12);
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.chip {
  padding-inline: var(--space-8);
  padding-block: var(--space-4);
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.06);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}