/* ============================================================
   Khelnedo Games — Global Styles
   Mobile-first, accessible, performance-optimized
   ============================================================ */

:root {
  --color-primary: #6C3CE1;
  --color-primary-dark: #5228B8;
  --color-primary-light: #8B5CF6;
  --color-accent: #F59E0B;
  --color-accent-dark: #D97706;
  --color-bg: #FAFAFA;
  --color-bg-dark: #111827;
  --color-surface: #FFFFFF;
  --color-surface-alt: #F3F4F6;
  --color-text: #1F2937;
  --color-text-secondary: #6B7280;
  --color-text-light: #9CA3AF;
  --color-border: #E5E7EB;
  --color-success: #10B981;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --max-width: 1200px;
  --max-content: 800px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* ============================================================
   NAVIGATION
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.nav-logo:hover { color: var(--color-primary-dark); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--color-primary) !important;
  color: #fff !important;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600 !important;
  transition: background 0.2s, transform 0.15s !important;
}

.nav-cta:hover {
  background: var(--color-primary-dark) !important;
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.2s;
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-surface);
    padding: 20px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    gap: 16px;
  }
  .nav-links.active { display: flex; }
  .nav-cta { text-align: center; }
}

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

.hero {
  background: linear-gradient(135deg, #6C3CE1 0%, #4F21A8 50%, #3B1488 100%);
  padding: 80px 20px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245,158,11,0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(139,92,246,0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.hero h1 .spark {
  color: var(--color-accent);
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

.hero-actions .play-badge img {
  height: 60px;
  width: auto;
}

.hero-stats {
  display: flex;
  gap: 40px;
  justify-content: center;
  margin-top: 48px;
}

.hero-stat {
  text-align: center;
}

.hero-stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-accent);
}

.hero-stat-label {
  font-size: 0.8rem;
  opacity: 0.8;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================================
   SECTIONS
   ============================================================ */

.section {
  padding: 80px 20px;
}

.section-dark {
  background: var(--color-bg-dark);
  color: #fff;
}

.section-alt {
  background: var(--color-surface-alt);
}

.section-header {
  text-align: center;
  max-width: var(--max-content);
  margin: 0 auto 48px;
}

.section-header h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
}

.section-dark .section-header p {
  color: rgba(255,255,255,0.7);
}

/* ============================================================
   FEATURES GRID
   ============================================================ */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.feature-card {
  background: var(--color-surface);
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ============================================================
   SCREENSHOTS
   ============================================================ */

.screenshots-scroll {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 20px 0;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  max-width: var(--max-width);
  margin: 0 auto;
}

.screenshots-scroll::-webkit-scrollbar { display: none; }

.screenshot-item {
  flex: 0 0 auto;
  width: 240px;
  scroll-snap-align: center;
}

.screenshot-item img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* ============================================================
   WHY SECTION / COMPARISON
   ============================================================ */

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.why-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.why-check {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  background: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  margin-top: 2px;
}

.why-item h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.why-item p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* ============================================================
   FAQ
   ============================================================ */

.faq-list {
  max-width: var(--max-content);
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 20px 0;
}

.faq-item summary {
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--color-text-light);
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  content: '-';
}

.faq-item p {
  margin-top: 12px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================================
   CTA SECTION
   ============================================================ */

.cta-section {
  background: linear-gradient(135deg, #6C3CE1 0%, #4F21A8 100%);
  padding: 80px 20px;
  text-align: center;
  color: #fff;
}

.cta-section h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-section p {
  opacity: 0.9;
  font-size: 1.1rem;
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .play-badge img {
  height: 60px;
  width: auto;
}

/* ============================================================
   ARTICLE CONTENT
   ============================================================ */

.article-page {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 40px 20px;
}

.content-article { line-height: 1.8; }

.breadcrumb {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
}

.breadcrumb a {
  color: var(--color-text-secondary);
}

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

.content-article h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  line-height: 1.2;
}

.article-meta {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 40px;
}

.content-article h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 48px;
  margin-bottom: 16px;
  color: var(--color-text);
}

.content-article h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
}

.content-article p {
  margin-bottom: 16px;
  color: var(--color-text-secondary);
}

.content-article ul, .content-article ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

.content-article li {
  margin-bottom: 8px;
  color: var(--color-text-secondary);
}

.content-article strong {
  color: var(--color-text);
  font-weight: 600;
}

.content-article table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.95rem;
}

.content-article th, .content-article td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.content-article th {
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-surface-alt);
}

.article-cta {
  background: var(--color-surface-alt);
  padding: 40px;
  border-radius: var(--radius-lg);
  text-align: center;
  margin-top: 60px;
}

.article-cta h2 {
  margin-top: 0;
  font-size: 1.4rem;
}

.article-cta p {
  margin-bottom: 20px;
}

/* ============================================================
   HOMEPAGE
   ============================================================ */

.home-hero {
  text-align: center;
  padding: 100px 20px 80px;
}

.home-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.home-hero p {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  max-width: 550px;
  margin: 0 auto 40px;
}

.game-showcase {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 80px;
}

.game-card-large {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 48px;
  display: flex;
  align-items: center;
  gap: 48px;
  transition: box-shadow 0.3s;
}

.game-card-large:hover { box-shadow: var(--shadow-xl); }

.game-card-info { flex: 1; }

.game-card-info h2 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.game-card-info p {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  font-size: 1.05rem;
}

.game-card-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.game-tag {
  background: var(--color-surface-alt);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.game-card-visual {
  flex-shrink: 0;
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

@media (max-width: 768px) {
  .game-card-large {
    flex-direction: column-reverse;
    padding: 32px;
    text-align: center;
  }
  .game-card-visual {
    width: 120px;
    height: 120px;
    font-size: 3rem;
  }
  .game-card-tags { justify-content: center; }
  .hero-stats { gap: 24px; }
}

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255,255,255,0.8);
  padding: 60px 20px 0;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-brand h3 {
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.6;
  opacity: 0.7;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-links h4 {
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links ul { list-style: none; }

.footer-links li { margin-bottom: 8px; }

.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-links a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.5;
  max-width: var(--max-width);
  margin: 0 auto;
}

@media (max-width: 768px) {
  .footer-container {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-links {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer-links { grid-template-columns: 1fr; }
}

/* ============================================================
   404
   ============================================================ */

.page-404 {
  text-align: center;
  padding: 120px 20px;
}

.page-404 h1 {
  font-size: 4rem;
  font-weight: 900;
  color: var(--color-primary);
}

.page-404 p {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  margin: 12px 0 32px;
}

.btn-primary {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: background 0.2s, transform 0.15s;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-1px);
}