/* ========================================
   CHIPVAULT.SHOP - CASINO RESEARCH WEBSITE
   Roulette Probability & Odds Analysis
   ======================================== */

/* ========================================
   ROOT & TYPOGRAPHY
   ======================================== */

:root {
  --primary: #2c3e50;
  --secondary: #34495e;
  --accent: #aa8c2c;
  --background: #f8f7f3;
  --text: #1a1a1a;
  --light-gray: #e8e7e3;
  --lighter-gray: #f2f1ed;
  --white: #ffffff;
  --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.12);
  --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.15);
}

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

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

body {
  font-family: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background-color: var(--background);
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Lora', 'Georgia', serif;
  font-weight: 600;
  line-height: 1.3;
  color: var(--primary);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

h4 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

h5 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

h6 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text);
  line-height: 1.7;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* ========================================
   ICON STYLES
   ======================================== */

.casino-icon {
  width: 48px;
  height: 48px;
  display: inline-block;
  vertical-align: middle;
  margin-right: 8px;
  fill: currentColor;
}

.hero .casino-icon {
  width: 64px;
  height: 64px;
}

/* ========================================
   BUTTONS & INTERACTIONS
   ======================================== */

button, .btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--accent);
  color: var(--white);
  border: none;
  border-radius: 4px;
  font-family: 'Source Sans Pro', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

button:hover, .btn:hover {
  background-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

button:active, .btn:active {
  transform: translateY(0);
}

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

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

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

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

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

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

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-family: 'Lora', serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

.brand-tagline {
  font-size: 0.65rem;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  display: block;
  line-height: 1.2;
}

.nav {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav a {
  color: var(--primary);
  font-weight: 500;
  position: relative;
  padding-bottom: 0.25rem;
  transition: color 0.3s ease;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: width 0.3s ease;
}

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

.nav a:hover::after {
  width: 100%;
}

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

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

.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: var(--white);
  padding: 6rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(170, 140, 44, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero h1 {
  color: var(--white);
  margin-bottom: 1rem;
}

.hero-tagline {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  color: var(--light-gray);
  font-weight: 300;
}

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

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
}

/* ========================================
   SECTION STRUCTURE
   ======================================== */

.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
  position: relative;
}

.section:nth-child(even) {
  background-color: var(--lighter-gray);
}

.section-divider {
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 50%, var(--primary) 100%);
  margin: 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-subtitle {
  color: var(--accent);
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 1.5px;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.section h2 {
  color: var(--primary);
  margin-bottom: 1rem;
}

.section-description {
  font-size: 1.1rem;
  color: var(--secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   CARD LAYOUT
   ======================================== */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.card {
  background-color: var(--white);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: var(--shadow-light);
  transition: all 0.3s ease;
  border-top: 4px solid var(--accent);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.card-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 3rem;
}

.card-content {
  padding: 2rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.card h3 {
  color: var(--primary);
  margin-bottom: 1rem;
}

.card p {
  color: var(--secondary);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--light-gray);
}

.card-meta {
  font-size: 0.85rem;
  color: var(--secondary);
}

.card .btn {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
}

/* ========================================
   BLOG & ARTICLE SECTION
   ======================================== */

.blog-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.article {
  background-color: