/* ============================================================================
   CASINO1 ROULETTE.SHOP - Game Theory Analytics
   Complete Responsive Stylesheet
   ============================================================================ */

/* ============================================================================
   FONT DEFINITIONS
   ============================================================================ */
@font-face {
  font-family: 'Playfair Display';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: local('Playfair Display'), local('PlayfairDisplay-Regular'),
       url('data:font/woff2;base64,d09GMgABAAAAA...') format('woff2');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: local('Inter'), local('Inter-Regular'),
       url('data:font/woff2;base64,d09GMgABAAAAA...') format('woff2');
}

/* ============================================================================
   CSS VARIABLES & ROOT
   ============================================================================ */
:root {
  --color-primary: #1a1a2e;
  --color-secondary: #16213e;
  --color-accent: #009bbb;
  --color-bg: #f5f5f5;
  --color-text: #1a1a2e;
  --color-text-light: #4a4a6a;
  --color-border: #e0e0e0;
  --color-white: #ffffff;
  --color-shadow: rgba(26, 26, 46, 0.1);
  --color-shadow-dark: rgba(26, 26, 46, 0.2);

  --font-heading: 'Playfair Display', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;

  --border-radius: 8px;
  --border-radius-lg: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --box-shadow: 0 2px 8px var(--color-shadow);
  --box-shadow-hover: 0 12px 24px var(--color-shadow-dark);
}

/* ============================================================================
   RESET & BASE STYLES
   ============================================================================ */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-md);
}

h4 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
  line-height: 1.8;
}

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ============================================================================
   ICON STYLES
   ============================================================================ */
.casino-icon {
  width: 48px;
  height: 48px;
  display: inline-block;
  vertical-align: middle;
  margin-right: var(--spacing-sm);
  fill: currentColor;
}

.hero .casino-icon {
  width: 64px;
  height: 64px;
  margin-right: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

/* ============================================================================
   BUTTONS
   ============================================================================ */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  box-shadow: 0 4px 12px rgba(0, 155, 187, 0.3);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-secondary:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-dark {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-dark:hover {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  box-shadow: 0 4px 12px var(--color-shadow-dark);
  transform: translateY(-2px);
}

.btn-small {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.875rem;
}

.btn-block {
  display: block;
  width: 100%;
}

/* ============================================================================
   CONTAINER & LAYOUT
   ============================================================================ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container-sm {
  max-width: 768px;
}

.container-lg {
  max-width: 1400px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.flex {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

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

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

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

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

/* ============================================================================
   HEADER & NAVIGATION
   ============================================================================ */
.header {
  background-color: var(--color-white);
  box-shadow: var(--box-shadow);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--spacing-md) 0;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: 1px;
}

.logo-subtitle {
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--color-accent);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  display: block;
  margin-top: -4px;
}

.nav {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
}

.nav-item a {
  color: var(--color-text);
  font-weight: 500;
  position: relative;
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.nav-item a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.nav-item a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.5rem;
  color: var(--color-primary);
}

/* ============================================================================
   HERO SECTION
   ============================================================================ */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-accent) 100%);
  color: var(--color-white);
  padding: var(--spacing-xxl) var(--spacing-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(0, 155, 187, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 80%, rgba(0, 155, 187, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom