/* ============================================================================
   KINGPULSE.SHOP - CASINO MATHEMATICS & PROBABILITY ANALYSIS
   Responsive CSS Stylesheet - Mobile First Approach
   ============================================================================ */

/* ============================================================================
   1. ROOT & GLOBAL STYLES
   ============================================================================ */

:root {
  --color-primary: #1a1a2e;
  --color-secondary: #16213e;
  --color-accent: #ab8e2c;
  --color-bg: #f8f9fa;
  --color-text: #1a1a2e;
  --color-text-light: #555555;
  --color-white: #ffffff;
  --color-border: #e0e0e0;
  --color-shadow: rgba(26, 26, 46, 0.1);
  --color-shadow-dark: rgba(26, 26, 46, 0.15);
  
  --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-2xl: 4rem;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  font-size: 16px;
}

/* ============================================================================
   2. TYPOGRAPHY
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -1px;
}

h2 {
  font-size: 2rem;
  letter-spacing: -0.5px;
}

h3 {
  font-size: 1.5rem;
  letter-spacing: -0.25px;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.1rem;
}

h6 {
  font-size: 1rem;
}

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

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

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

strong {
  color: var(--color-primary);
  font-weight: 600;
}

/* ============================================================================
   3. BUTTONS & INTERACTIVE ELEMENTS
   ============================================================================ */

button,
.btn,
input[type="button"],
input[type="submit"] {
  font-family: var(--font-body);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: inline-block;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
}

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

.btn-primary:hover,
.btn-primary:active {
  background-color: #9a7a24;
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(171, 142, 44, 0.3);
}

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

.btn-secondary:hover,
.btn-secondary:active {
  background-color: var(--color-secondary);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px var(--color-shadow-dark);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn-outline:hover,
.btn-outline:active {
  background-color: var(--color-accent);
  color: var(--color-white);
}

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

.btn-large {
  padding: var(--spacing-md) var(--spacing-2xl);
  font-size: 1.1rem;
}

/* ============================================================================
   4. HEADER & NAVIGATION
   ============================================================================ */

.header {
  background-color: var(--color-white);
  box-shadow: 0 2px 8px var(--color-shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-text {
  display: block;
}

.logo-tagline {
  font-family: var(--font-body);
  font-size: 0.65rem;
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: 1px;
  display: none;
}

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

.nav-item a {
  font-weight: 500;
  color: var(--color-text);
  padding-bottom: 4px;
  border-bottom: 3px solid transparent;
  transition: var(--transition-fast);
}

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

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
  background: none;
  border: none;
  padding: 0;
}

.hamburger span {
  width: 24px;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: var(--transition-fast);
}

/* ============================================================================
   5. HERO SECTION
   ============================================================================ */

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

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(171, 142, 44, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(171, 142, 44, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero .casino-icon {
  width: 64px;
  height: 64px;
  display: inline-block;
  vertical-align: middle;
  margin-bottom: var(--spacing-md);
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.hero h1 {
  color: var(--color-white);
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.hero p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-lg);
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================================
   6. SECTION STRUCTURE
   ============================================================================ */

.section {
  padding: var(--spacing-2xl) var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.section-header p {
  font-size: 1.1rem;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

.section-divider {
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  margin: var(--spacing-2xl) auto;
  width: 80px;
}

/* ============================================================================
   7. CARD LAYOUTS
   ============================================================================ */

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

.card {
  background-color: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 12px var(--color-shadow);
  transition: var(--transition);
  border-top: 4px solid var(--color-accent);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px var(--color-shadow-dark);
}

.card-header {
  padding: var(--spacing-lg);
  background-color: var(--color-bg);
  border-