/**
 * SudokuFlow Landing Page Styles
 * High-contrast, legible design
 */

/* CSS Custom Properties - Improved Color Palette */
:root {
  --color-bg: #0a0a0a;
  --color-bg-secondary: #111118;
  --color-primary: #60a5fa;
  --color-primary-bright: #93c5fd;
  --color-text: #ffffff;
  --color-text-secondary: #d1d5db;
  --color-text-muted: #9ca3af;
  --color-border: #374151;
  --radius-lg: 1rem;
  --radius-md: 0.75rem;
  --spacing-section: 5rem;
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
}

/* Base Styles for SudokuFlow Page */
#page-wrapper {
  background: var(--color-bg);
  color: var(--color-text);
}

/* Sub Pages (Privacy, Press, etc.) */
.page-content {
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  padding: 2rem 1rem;
}

.page-content h1 {
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.page-content h2 {
  color: var(--color-primary-bright);
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.page-content ul, .page-content ol {
  color: var(--color-text-secondary);
  margin-left: 1.5rem;
  margin-bottom: 1.5rem;
}

.page-content li {
  margin-bottom: 0.5rem;
}

.page-content strong {
  color: var(--color-primary);
}

/* Mobile-First Container */
.container {
  width: min(1120px, 100% - 2rem);
  margin-inline: auto;
  padding: 0 1rem;
}

/* Responsive Typography - High Contrast */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text);
  line-height: 1.2;
  font-weight: 700;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin-bottom: 1.5rem;
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  margin-bottom: 1rem;
}

p {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
}

/* Section Spacing */
.section {
  padding: var(--spacing-section) 0;
}

/* Feature Cards */
.sudokuflow-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  padding: 1rem 0;
}

.feature-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform var(--transition-medium), border-color var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
}

.feature-card h3 {
  color: var(--color-primary-bright);
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--color-text-muted);
  margin: 0;
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

/* Screenshot Grid */
.sudokuflow-screenshots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  padding: 1rem;
}

.screenshot {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform var(--transition-medium);
  background: var(--color-bg-secondary);
}

.screenshot:hover {
  transform: scale(1.02);
  border-color: var(--color-primary);
}

.screenshot img {
  width: 100%;
  height: auto;
  display: block;
}

/* Footer Links */
.sudokuflow-footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.sudokuflow-footer-nav a {
  color: var(--color-primary-bright);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.sudokuflow-footer-nav a:hover {
  color: var(--color-text);
  text-decoration: underline;
}

.sudokuflow-footer-nav span {
  color: var(--color-border);
}

/* Mobile Optimization */
@media (max-width: 768px) {
  :root {
    --spacing-section: 3.5rem;
  }

  .container {
    width: calc(100% - 2rem);
  }

  .sudokuflow-features {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .sudokuflow-screenshots {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
  }

  .feature-card {
    padding: 1.5rem;
  }
}

/* Accessibility - Focus States */
a:focus,
button:focus {
  outline: 2px solid var(--color-primary-bright);
  outline-offset: 2px;
}

/* Skip Link */
.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-text);
  color: var(--color-bg);
  padding: 8px;
  z-index: 100;
}

.skip-to-content:focus {
  top: 0;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Print Styles */
@media print {
  .modular-hero,
  .modular-download {
    background: white !important;
    color: black !important;
  }

  .sudokuflow-hero-content a {
    display: none;
  }
}

/* Screenshot Carousel */
.sudokuflow-carousel {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 0;
}

.carousel-viewport {
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: #1a1a2e;
}

.carousel-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.carousel-slide {
    flex: 0 0 100%;
    padding: 0.5rem;
}

.carousel-slide img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-md);
}

.carousel-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(10, 10, 10, 0.8);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: #e0e0e0;
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    z-index: 10;
    transition: all 0.2s ease;
}

.carousel-nav:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateY(-50%) scale(1.1);
}

.carousel-prev { left: 1rem; }
.carousel-next { right: 1rem; }

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-border);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.carousel-dot.active {
    background: var(--color-primary);
    transform: scale(1.3);
}

@media (min-width: 768px) {
    .carousel-slide { flex: 0 0 50%; }
}

@media (min-width: 1024px) {
    .carousel-slide { flex: 0 0 33.333%; }
}