:root {
  --bg-color: oklch(20% 0.03 240);
  --text-color: oklch(95% 0.01 240);
  --primary-color: oklch(65% 0.2 280);
  --card-bg: oklch(25% 0.04 240);
  --shadow-color: oklch(20% 0.03 280 / 0.5);
  --glow-color: oklch(70% 0.25 280 / 0.7);
}

[data-theme='light'] {
  --bg-color: oklch(95% 0.01 240);
  --text-color: oklch(20% 0.03 240);
  --primary-color: oklch(65% 0.2 280);
  --card-bg: oklch(100% 0 0);
  --shadow-color: oklch(20% 0.03 280 / 0.3);
  --glow-color: oklch(65% 0.2 280 / 0.7);
}

.theme-toggle {
  position: fixed;
  top: 1rem;
  right: calc(1rem + 250px + 2rem); /* 1rem (default) + sidebar width + main-container gap */
  font-size: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--primary-color);
  border-radius: 8px;
  cursor: pointer;
  padding: 0.5rem;
  line-height: 1;
  z-index: 1000;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
}

.main-container {
  display: grid;
  grid-template-columns: 250px 1fr 250px;
  gap: 2rem;
  padding: 2rem;
}

.sidebar {
  width: 100%; /* Ensure sidebar takes full width of its grid column */
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.content {
  text-align: center;
}

h1 {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary-color);
  text-shadow: 0 0 15px var(--glow-color);
  margin-bottom: 2rem;
}

.controls {
  margin-bottom: 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

label {
  font-size: 1.1rem;
}

input[type="number"] {
  font-size: 1rem;
  padding: 0.5rem;
  width: 80px;
  border-radius: 8px;
  border: 1px solid var(--card-bg);
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: box-shadow 0.3s ease;
}

input[type="number"]:focus {
  outline: none;
  box-shadow: 0 0 10px var(--glow-color);
}

#generate-btn {
  font-size: 1rem;
  font-weight: 600;
  padding: 0.6rem 1.5rem;
  border-radius: 8px;
  border: none;
  background-color: var(--primary-color);
  color: var(--text-color);
  cursor: pointer;
  transition: background-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
  box-shadow: 0 4px 15px -5px var(--shadow-color);
}

#generate-btn:hover {
  background-color: oklch(70% 0.25 280);
  box-shadow: 0 0 20px var(--glow-color);
  transform: translateY(-2px);
}

#generate-btn:active {
    transform: translateY(0);
}

#results-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.lotto-set {
  background-color: var(--card-bg);
  padding: 1.5rem;
  border-radius: 12px;
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 2px;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 10px 25px -10px var(--shadow-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.lotto-set:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px -10px var(--shadow-color);
}

.ad-banner-container {
  min-height: 400px;
  padding: 1rem;
  border: 2px dashed var(--primary-color);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--card-bg);
}

/* REMOVED: .contact-container styles */

.top-contact-info {
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
  text-align: center;
  color: oklch(75% 0.05 240);
}

/* Accessibility */
input[type="number"]:focus-visible, 
#generate-btn:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

@media (max-width: 1024px) {
    .main-container {
      grid-template-columns: 1fr; /* Single column layout for smaller screens */
      padding: 1rem; /* Adjust padding for smaller screens */
    }
    .theme-toggle {
      right: 1rem; /* Reset right position for smaller screens */
    }
    .sidebar {
      order: 1; /* Move sidebars below content on smaller screens */
      flex-direction: row;
      flex-wrap: wrap;
      justify-content: center;
      gap: 1rem; /* Adjust gap for row layout */
    }
    .content {
      order: 0; /* Keep content at the top */
    }
    .ad-banner-container {
      flex-grow: 1;
      min-width: 200px;
      margin-top: 0; /* Remove top margin when in row layout */
    }
}

@media (max-width: 768px) {
    .main-container {
        gap: 1rem;
    }
    h1 {
        font-size: 2.5rem;
    }
}