/* =====================================
   Variables
   ===================================== */
:root {
  /* Color Palette */
  --color-background: #f5f7fb;
  --color-surface: #ffffff;
  --color-text: #101828;
  --color-text-muted: #667085;
  --color-primary: #1f4f9c;
  --color-primary-soft: #e0e9fa;
  --color-primary-strong: #163a72;
  --color-success: #12835b;
  --color-success-soft: #e1f6ed;
  --color-warning: #b9730f;
  --color-warning-soft: #fff4e0;
  --color-danger: #b42318;
  --color-danger-soft: #fee4e2;

  /* Neutral Grays */
  --gray-50: #f9fafb;
  --gray-100: #f2f4f7;
  --gray-200: #e4e7ec;
  --gray-300: #d0d5dd;
  --gray-400: #98a2b3;
  --gray-500: #667085;
  --gray-600: #475467;
  --gray-700: #344054;
  --gray-800: #1d2939;
  --gray-900: #101828;

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

  /* Spacing Scale (px) */
  --space-0: 0;
  --space-4: 0.25rem;   /* 4px */
  --space-8: 0.5rem;    /* 8px */
  --space-12: 0.75rem;  /* 12px */
  --space-16: 1rem;     /* 16px */
  --space-20: 1.25rem;  /* 20px */
  --space-24: 1.5rem;   /* 24px */
  --space-32: 2rem;     /* 32px */
  --space-40: 2.5rem;   /* 40px */
  --space-48: 3rem;     /* 48px */
  --space-56: 3.5rem;   /* 56px */
  --space-64: 4rem;     /* 64px */
  --space-80: 5rem;     /* 80px */
  --space-96: 6rem;     /* 96px */

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

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 6px rgba(15, 23, 42, 0.1), 0 2px 4px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 10px 15px rgba(15, 23, 42, 0.12), 0 4px 6px rgba(15, 23, 42, 0.08);

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

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

/* Respect user motion preferences */
@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;
  }
}

/* =====================================
   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,
video,
canvas,
svg,
picture {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

ul,
ol {
  margin: 0;
  padding: 0;
}

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

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

legend {
  padding: 0;
}

/* Remove default link styles */
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-relaxed);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

p {
  margin-top: 0;
  margin-bottom: var(--space-16);
  color: var(--color-text);
}

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

strong {
  font-weight: 600;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: var(--line-height-tight);
  color: var(--color-text);
  margin-top: 0;
  margin-bottom: var(--space-12);
}

h1 {
  font-size: clamp(2.25rem, 2.6vw, 2.75rem);
}

h2 {
  font-size: clamp(1.75rem, 2vw, 2.1rem);
}

h3 {
  font-size: clamp(1.4rem, 1.6vw, 1.6rem);
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.125rem;
}

h6 {
  font-size: 1rem;
}

/* Links - discrete, professional */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-normal),
              text-decoration-color var(--transition-normal),
              background-color var(--transition-normal);
}

a:hover {
  color: var(--color-primary-strong);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

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

[tabindex="-1"]:focus {
  outline: none !important;
}

/* 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;
}

.sr-only-focusable:active,
.sr-only-focusable:focus {
  position: static;
  width: auto;
  height: auto;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

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

/* Layout container for main content */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-16);
  padding-right: var(--space-16);
}

@media (min-width: 1024px) {
  .container {
    padding-left: var(--space-24);
    padding-right: var(--space-24);
  }
}

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

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

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

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

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

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

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

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-24);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-24);
}

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

/* Spacing helpers (margin / padding) */
.m-0 { margin: 0 !important; }
.mt-16 { margin-top: var(--space-16) !important; }
.mb-16 { margin-bottom: var(--space-16) !important; }
.mt-24 { margin-top: var(--space-24) !important; }
.mb-24 { margin-bottom: var(--space-24) !important; }
.mt-32 { margin-top: var(--space-32) !important; }
.mb-32 { margin-bottom: var(--space-32) !important; }

.pt-24 { padding-top: var(--space-24) !important; }
.pb-24 { padding-bottom: var(--space-24) !important; }
.pt-32 { padding-top: var(--space-32) !important; }
.pb-32 { padding-bottom: var(--space-32) !important; }

/* Text utilities */
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }
.text-muted { color: var(--color-text-muted) !important; }

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color var(--transition-normal),
              color var(--transition-normal),
              box-shadow var(--transition-normal),
              border-color var(--transition-normal),
              transform var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

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

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

.btn-outline {
  background-color: transparent;
  border-color: var(--gray-300);
  color: var(--color-text);
}

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

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

.btn-ghost:hover {
  background-color: rgba(15, 23, 42, 0.04);
}

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

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

/* Form Inputs */
.input,
select,
textarea {
  width: 100%;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-300);
  background-color: #ffffff;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  transition: border-color var(--transition-normal),
              box-shadow var(--transition-normal),
              background-color var(--transition-normal);
}

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

.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 {
  background-color: var(--gray-100);
  color: var(--gray-500);
  cursor: not-allowed;
}

/* Cards - for casino listings, bonus blocks, legal info */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-24);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(15, 23, 42, 0.04);
}

.card-elevated {
  box-shadow: var(--shadow-md);
}

.card-header {
  margin-bottom: var(--space-16);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-8);
}

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

.card-body {
  font-size: var(--font-size-sm);
}

/* Tag / pill for ratings, legal mention, bonus labels */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.badge-primary {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-strong);
}

.badge-success {
  background-color: var(--color-success-soft);
  color: var(--color-success);
}

.badge-warning {
  background-color: var(--color-warning-soft);
  color: var(--color-warning);
}

.badge-danger {
  background-color: var(--color-danger-soft);
  color: var(--color-danger);
}

/* Tables (for bonus comparisons) */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.table thead {
  background-color: #f8fafc;
}

.table th,
.table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
}

.table th {
  font-weight: 600;
  color: var(--gray-700);
}

.table-striped tbody tr:nth-child(odd) {
  background-color: #f9fbff;
}

/* Helper: subtle section divider */
.section-divider {
  border: 0;
  border-top: 1px solid var(--gray-200);
  margin: var(--space-32) 0;
}

/* Hero / banner background helper for authoritative blue header */
.hero-surface {
  background: radial-gradient(circle at top left, rgba(96, 165, 250, 0.18), transparent 55%),
              radial-gradient(circle at bottom right, rgba(37, 99, 235, 0.16), transparent 60%),
              linear-gradient(135deg, #0f172a, #1f4f9c);
  color: #ffffff;
}

.hero-surface a {
  color: #e0e9fa;
}

.hero-surface a:hover {
  color: #ffffff;
}