/* ==========================================================================
   TABLEACE.SHOP - CASINO STRATEGY EDUCATION WEBSITE
   Stylesheet for Card Counting Methods
   ========================================================================== */

/* ==========================================================================
   1. ROOT VARIABLES & TYPOGRAPHY
   ========================================================================== */

:root {
  --primary: #5f5f5f;
  --secondary: #2d2d2d;
  --accent: #d4af37;
  --background: #0f0f0f;
  --text: #f5f5f5;
  --text-secondary: #b0b0b0;
  --border: #3a3a3a;
  --shadow: rgba(0, 0, 0, 0.5);
  --shadow-light: rgba(212, 175, 55, 0.1);
  
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Source Sans Pro', sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  --transition: all 0.3s ease;
  --transition-fast: all 0.15s ease;
}

/* ==========================================================================
   2. RESET & BASE STYLES
   ========================================================================== */

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

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

body {
  background-color: var(--background);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
  color: var(--text);
}

h1 {
  font-size: 3.5rem;
  letter-spacing: -1px;
}

h2 {
  font-size: 2.5rem;
  letter-spacing: -0.5px;
}

h3 {
  font-size: 1.75rem;
  letter-spacing: -0.25px;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
}

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

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

a:hover {
  color: lighten(var(--accent), 10%);
}

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

/* ==========================================================================
   3. HEADER & NAVIGATION
   ========================================================================== */

.header {
  background-color: var(--secondary);
  padding: var(--spacing-md) var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px var(--shadow);
  border-bottom: 1px solid var(--border);
}

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

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

.logo .casino-icon {
  width: 40px;
  height: 40px;
  display: inline-block;
  vertical-align: middle;
  margin-right: 0;
}

.tagline {
  display: none;
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 2px;
  text-transform: uppercase;
  font-family: var(--font-body);
}

.nav {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  margin: 0;
}

.nav li {
  position: relative;
}

.nav a {
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  padding: var(--spacing-xs) 0;
  border-bottom: 2px solid transparent;
  transition: var(--transition-fast);
}

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

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

/* ==========================================================================
   4. HERO SECTION
   ========================================================================== */

.hero {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 50%, var(--secondary) 100%);
  padding: var(--spacing-xxl) var(--spacing-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

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

.hero .casino-icon {
  width: 64px;
  height: 64px;
  display: inline-block;
  vertical-align: middle;
  margin-right: 0;
  margin-bottom: var(--spacing-md);
  filter: drop-shadow(0 0 10px rgba(212, 175, 55, 0.3));
}

.hero h1 {
  margin-bottom: var(--spacing-md);
  color: var(--accent);
  text-shadow: 0 2px 4px var(--shadow);
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.8;
}

.hero .tagline {
  display: block;
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: var(--spacing-lg);
  font-weight: 600;
}

/* ==========================================================================
   5. BUTTONS
   ========================================================================== */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 2px solid var(--accent);
  background-color: transparent;
  color: var(--accent);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border-radius: 4px;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 1px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.btn:hover {
  background-color: var(--accent);
  color: var(--secondary);
  box-shadow: 0 8px 20px rgba(212, 175, 55, 0.3);
  transform: translateY(-2px);
}

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

.btn-primary:hover {
  background-color: transparent;
  color: var(--accent);
  box-shadow: 0 8px 20px rgba(212, 175, 55, 0.2);
}

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

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

.btn-small {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   6. SECTION STYLES
   ========================================================================== */

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

.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
  margin: var(--spacing-xxl) 0;
  opacity: 0.5;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-xxl);
  position: relative;
  padding-bottom: var(--spacing-lg);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-md);
  font-family: var(--font-body);
  font-weight: 600;
}

/* ==========================================================================
   7. CARD STYLES
   ========================================================================== */

.card {
  background-color: var(--secondary);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 12px var(--shadow);
  transition: var(--transition);
  border-top: 4px solid var(--accent);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px var(--shadow);
}

.card-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  overflow: hidden;
  position: relative;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-image .casino