/* ==========================================================================
   MindPro: Logic Puzzles Arcade - Official Showcase Website Stylesheet
   Theme: Midnight Glassmorphism (#090D16, #0F172A, #38BDF8, #10B981, #F59E0B)
   ========================================================================== */

:root {
  --bg-primary: #090D16;
  --bg-secondary: #0F172A;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-active: rgba(56, 189, 248, 0.5);
  
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --accent-cyan: #38BDF8;
  --accent-emerald: #10B981;
  --accent-amber: #F59E0B;
  --accent-purple: #A855F7;
  --accent-rose: #F43F5E;
  
  --glow-cyan: 0 0 25px rgba(56, 189, 248, 0.35);
  --glow-emerald: 0 0 25px rgba(16, 185, 129, 0.35);
  --glow-amber: 0 0 25px rgba(245, 158, 11, 0.35);
  
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base & Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 20%, rgba(56, 189, 248, 0.07) 0%, transparent 40%),
    radial-gradient(circle at 85% 65%, rgba(168, 85, 247, 0.06) 0%, transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
  background-attachment: fixed;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Helpers */
.gradient-text {
  background: linear-gradient(135deg, #38BDF8 0%, #818CF8 50%, #C084FC 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-gold {
  background: linear-gradient(135deg, #F59E0B 0%, #FBBF24 50%, #FDE047 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 9999px;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--accent-cyan);
  font-size: 0.825rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.125rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, #0284C7 0%, #0369A1 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 18px rgba(2, 132, 199, 0.4);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(2, 132, 199, 0.6);
  background: linear-gradient(135deg, #0369A1 0%, #0284C7 100%);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border-color: var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-google-play {
  background: #000000;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
  padding: 10px 22px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.btn-google-play:hover {
  background: #111827;
  border-color: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
}

.btn-google-play svg {
  width: 28px;
  height: 28px;
}

.btn-google-play .text-col {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.btn-google-play .sub {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.btn-google-play .main {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.2;
}

/* Header & Nav */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3);
  object-fit: cover;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.75rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding: 160px 0 100px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 48px;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-content p {
  color: var(--text-secondary);
  font-size: 1.25rem;
  line-height: 1.7;
  margin-bottom: 36px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.badge-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.badge-item svg {
  color: var(--accent-emerald);
}

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

.hero-preview {
  position: relative;
}

.feature-frame {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 16px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6), var(--glow-cyan);
  position: relative;
  overflow: hidden;
}

.feature-graphic-img {
  width: 100%;
  border-radius: calc(var(--radius-xl) - 8px);
  object-fit: cover;
}

.floating-stat-pill {
  position: absolute;
  bottom: 30px;
  left: 30px;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.floating-stat-pill .num {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--accent-emerald);
}

.floating-stat-pill .lbl {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* Games Showcase Section */
.games-section {
  padding: 100px 0;
  border-top: 1px solid var(--border-color);
}

.games-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 48px;
}

.game-tab-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 9999px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.game-tab-btn:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
}

.game-tab-btn.active {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
}

.game-card-display {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 40px;
  backdrop-filter: blur(20px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.game-info h3 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.game-tagline {
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: 20px;
}

.game-desc {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.rules-list {
  list-style: none;
  margin-bottom: 28px;
}

.rules-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text-primary);
  font-size: 0.95rem;
  margin-bottom: 12px;
}

.rules-list li svg {
  color: var(--accent-emerald);
  flex-shrink: 0;
  margin-top: 3px;
}

.difficulty-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.diff-badge {
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 700;
  border: 1px solid var(--border-color);
}

/* Interactive Board Preview inside Game Card */
.board-preview-box {
  background: #090D16;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.8);
  min-height: 380px;
}

/* Features Grid */
.features-section {
  padding: 100px 0;
  border-top: 1px solid var(--border-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}

.feature-box:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.feature-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.feature-box h4 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 12px;
}

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

/* FAQ Section */
.faq-section {
  padding: 100px 0;
  border-top: 1px solid var(--border-color);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.faq-question svg {
  transition: transform 0.3s ease;
  flex-shrink: 0;
  color: var(--accent-cyan);
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 250px;
  padding: 0 24px 20px 24px;
}

/* Call to Action Banner */
.cta-banner {
  padding: 80px 0;
  border-top: 1px solid var(--border-color);
}

.cta-card {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.25) 0%, rgba(15, 23, 42, 0.8) 100%);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), var(--glow-cyan);
}

.cta-card h2 {
  font-size: 2.75rem;
  font-weight: 900;
  margin-bottom: 16px;
}

.cta-card p {
  color: var(--text-secondary);
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto 36px;
}

/* Footer */
.footer {
  background: #060910;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand p {
  margin-top: 14px;
  line-height: 1.6;
  max-width: 320px;
  color: var(--text-muted);
}

.footer-col h5 {
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
}

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

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Legal Pages (Privacy & Terms) */
.legal-page {
  padding: 140px 0 80px;
}

.legal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 50px;
  backdrop-filter: blur(20px);
}

.legal-card h1 {
  font-size: 2.75rem;
  font-weight: 900;
  margin-bottom: 12px;
}

.legal-card .updated-date {
  color: var(--accent-cyan);
  font-weight: 600;
  margin-bottom: 40px;
}

.legal-content h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 32px 0 14px;
  color: var(--text-primary);
}

.legal-content p, .legal-content ul {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 18px;
}

.legal-content ul {
  padding-left: 24px;
}

.legal-content a {
  color: var(--accent-cyan);
  text-decoration: underline;
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-content h1 {
    font-size: 2.75rem;
  }
  
  .hero-badges, .hero-actions {
    justify-content: center;
  }
  
  .game-card-display {
    grid-template-columns: 1fr;
  }
  
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .mobile-nav-active .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: #090D16;
    border-bottom: 1px solid var(--border-color);
    padding: 24px;
    gap: 20px;
  }
  
  .footer-top {
    grid-template-columns: 1fr;
  }
  
  .legal-card {
    padding: 28px 20px;
  }
}