/* =====================================================
   CASINORAVE.SHOP - CASINO INFORMATION WEBSITE
   House Edge Analysis & Casino Mathematics
   ===================================================== */

/* =====================================================
   CSS VARIABLES & RESET
   ===================================================== */

:root {
  --color-primary: #7c7c87;
  --color-secondary: #16213e;
  --color-accent: #00d4ff;
  --color-background: #0f3460;
  --color-text: #e8e8e8;
  --color-text-dark: #1a1a1a;
  --color-border: rgba(124, 124, 135, 0.2);
  --color-hover: rgba(0, 212, 255, 0.1);
  
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-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-2xl: 4rem;
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  letter-spacing: 0.3px;
}

/* =====================================================
   TYPOGRAPHY
   ===================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  letter-spacing: 0.5px;
}

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

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

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

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

p {
  font-size: 1rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

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

a:hover {
  color: #00a8cc;
  text-decoration: underline;
}

strong {
  font-weight: 700;
  color: var(--color-accent);
}

/* =====================================================
   LAYOUT & CONTAINERS
   ===================================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-md);
}

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

.col {
  width: 100%;
}

/* =====================================================
   HEADER & NAVIGATION
   ===================================================== */

.header {
  background-color: var(--color-secondary);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-md);
  border-bottom: 1px solid var(--color-border);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 1px;
}

.brand-icon {
  width: 40px;
  height: 40px;
  display: inline-block;
}

.tagline {
  font-size: 0.75rem;
  color: var(--color-primary);
  font-style: italic;
  margin-top: -0.25rem;
}

.nav {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

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

.nav a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  text-decoration: none;
}

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

/* =====================================================
   HERO SECTION
   ===================================================== */

.hero {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-background) 100%);
  padding: var(--spacing-2xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-bottom: 2px solid var(--color-accent);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.05) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero .casino-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  display: block;
  filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.3));
}

.hero h1 {
  margin-bottom: var(--spacing-md);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero p {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* =====================================================
   BUTTONS
   ===================================================== */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  font-size: 1rem;
  letter-spacing: 0.5px;
}

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

.btn-primary:hover {
  background-color: #00a8cc;
  border-color: #00a8cc;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 212, 255, 0.3);
}

.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-text-dark);
  transform: translateY(-2px);
}

.btn-group {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

/* =====================================================
   CARDS
   ===================================================== */

.card {
  background-color: rgba(22, 33, 62, 0.6);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border-top: 4px solid var(--color-accent);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0, 212, 255, 0.3);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: inline-block;
  margin-right: var(--spacing-sm);
  vertical-align: middle;
  filter: drop-shadow(0 0 4px rgba(0, 212, 255, 0.2));
}

.card-header {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.card h3 {
  margin: 0;
  display: inline-block;
}

.card p {
  margin-bottom: var(--spacing-md);
  font-size: 0.95rem;
  line-height: 1.7;
}

.card-footer {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

.card-stat {
  display: block;
  font-size: 1.5rem;
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.card-stat-label {
  font-size: 0.85rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* =====================================================
   SECTIONS
   ===================================================== */

.section {
  padding: var(--spacing-2xl) 0