/* NeuroStrike Product Website — Shared Styles */
/* Brand: Primary #2ECC71, Accent #00D4FF, Dark #0D0D0D */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;800;900&family=Rajdhani:wght@400;500;600;700&display=swap');

:root {
  --color-primary: #2ECC71;
  --color-accent: #00D4FF;
  --color-dark: #0D0D0D;
  --color-dark-lighter: #1a1a1a;
  --color-dark-card: #151515;
  --color-text: #e8e8e8;
  --color-text-muted: #9ca3af;
  --color-border: rgba(46, 204, 113, 0.2);
  --color-border-accent: rgba(0, 212, 255, 0.2);
  --gradient-hero: linear-gradient(135deg, #0D0D0D 0%, #0d1a10 50%, #0D0D0D 100%);
  --gradient-card: linear-gradient(180deg, rgba(46, 204, 113, 0.05) 0%, transparent 100%);
  --gradient-accent: linear-gradient(90deg, #2ECC71, #00D4FF);
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Rajdhani', sans-serif;
  --shadow-glow: 0 0 40px rgba(46, 204, 113, 0.15);
  --shadow-glow-sm: 0 0 20px rgba(46, 204, 113, 0.1);
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.3s ease;
  --radius: 12px;
  --radius-sm: 8px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--color-dark);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ─── NAVIGATION ──────────────────────────────────────────────────────────── */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(13, 13, 13, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  padding: 0.75rem 1.5rem;
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
  transition: var(--transition-fast);
}

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

.nav-logo-img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: cover;
}

.nav-links {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  align-items: center;
  flex-wrap: nowrap;
}

.nav-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--color-primary);
  background: rgba(46, 204, 113, 0.08);
}

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

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-primary);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.nav-toggle:hover {
  background: rgba(46, 204, 113, 0.1);
}

/* ─── HERO ────────────────────────────────────────────────────────────────── */

.hero {
  min-height: 75vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem 1.5rem 5rem;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(46, 204, 113, 0.07) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(0, 212, 255, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--gradient-accent);
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  border: 1px solid var(--color-border-accent);
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  margin-bottom: 1.25rem;
  font-family: var(--font-display);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.5vw, 3.75rem);
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
  text-transform: uppercase;
  line-height: 1.1;
  animation: fadeInUp 0.7s ease both;
}

.hero-tagline {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--color-text);
  font-weight: 600;
  margin-bottom: 0.75rem;
  animation: fadeInUp 0.7s ease 0.15s both;
}

.hero-subtitle {
  font-size: clamp(0.9rem, 1.8vw, 1.05rem);
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto 2rem;
  animation: fadeInUp 0.7s ease 0.25s both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── SECTIONS ────────────────────────────────────────────────────────────── */

.section {
  padding: 4rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  color: var(--color-primary);
  margin-bottom: 0.75rem;
  text-align: center;
}

.section-subtitle {
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  font-size: 1rem;
}

/* ─── FEATURE GRID ────────────────────────────────────────────────────────── */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.feature-card {
  background: var(--color-dark-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: var(--transition-smooth);
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(46, 204, 113, 0.35);
}

.feature-card:hover::before { opacity: 1; }

.feature-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: block;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  letter-spacing: 0.03em;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

/* ─── TWO COL ─────────────────────────────────────────────────────────────── */

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
  margin: 1.5rem 0;
}

.two-col h3 {
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

.two-col p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ─── GAME TAGS (platform/title tags) ────────────────────────────────────── */

.game-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
  justify-content: center;
}

.game-tag {
  display: inline-block;
  padding: 0.35rem 0.8rem;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 6px;
  font-size: 0.82rem;
  color: var(--color-accent);
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* ─── MODE TAGS ───────────────────────────────────────────────────────────── */

.mode-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.mode-tag {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  background: rgba(46, 204, 113, 0.1);
  border: 1px solid rgba(46, 204, 113, 0.25);
  border-radius: 6px;
  font-size: 0.82rem;
  color: var(--color-primary);
  font-weight: 600;
  white-space: nowrap;
}

/* ─── PROTOCOL CARD ───────────────────────────────────────────────────────── */

.protocol-card {
  background: var(--color-dark-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin: 1.5rem 0;
}

.protocol-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}

.protocol-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.protocol-steps li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

.protocol-steps li::before {
  content: attr(data-step);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  background: rgba(46, 204, 113, 0.15);
  border: 1px solid rgba(46, 204, 113, 0.3);
  border-radius: 50%;
  font-size: 0.72rem;
  color: var(--color-primary);
  font-family: var(--font-display);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.protocol-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin: 1.5rem 0;
}

/* ─── CERT SHOWCASE ───────────────────────────────────────────────────────── */

.cert-showcase {
  background: var(--color-dark-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  margin: 1.5rem 0;
  text-align: center;
}

.cert-showcase h3 {
  font-family: var(--font-display);
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
}

.cert-showcase p {
  color: var(--color-text-muted);
  font-size: 0.93rem;
  max-width: 640px;
  margin: 0 auto;
}

.cert-formula {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--color-text-muted);
  font-family: monospace;
}

/* ─── STAT BADGES ─────────────────────────────────────────────────────────── */

.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin: 1.5rem 0;
}

.stat-badge {
  background: var(--color-dark-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  text-align: center;
  min-width: 120px;
}

.stat-badge .stat-value {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-primary);
  display: block;
}

.stat-badge .stat-label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: block;
  margin-top: 0.2rem;
}

/* ─── TESTIMONIAL ─────────────────────────────────────────────────────────── */

.testimonial {
  background: var(--color-dark-card);
  border-left: 3px solid var(--color-primary);
  padding: 1.5rem 1.75rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--color-text-muted);
  font-size: 0.97rem;
}

.testimonial cite {
  display: block;
  margin-top: 0.75rem;
  font-style: normal;
  color: var(--color-primary);
  font-size: 0.85rem;
}

/* ─── SEGMENT LINKS ───────────────────────────────────────────────────────── */

.segment-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin: 1.5rem 0;
}

.segment-link {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  background: var(--color-dark-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition-smooth);
  min-height: 44px;
  display: flex;
  align-items: center;
}

.segment-link:hover {
  background: var(--color-primary);
  color: var(--color-dark);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

/* ─── BUTTONS ─────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.82rem;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
  letter-spacing: 0.06em;
  min-height: 48px;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-accent);
  color: var(--color-dark);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(46, 204, 113, 0.4);
}

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

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-dark);
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

/* ─── CTA SECTION ─────────────────────────────────────────────────────────── */

.cta-section {
  text-align: center;
  padding: 4rem 1.5rem;
  background: linear-gradient(180deg, transparent, rgba(46, 204, 113, 0.04));
  border-top: 1px solid var(--color-border);
}

/* ─── FOOTER ──────────────────────────────────────────────────────────────── */

.footer {
  background: var(--color-dark-lighter);
  padding: 2rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-bottom: 1rem;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: var(--transition-fast);
  min-height: 36px;
  display: inline-flex;
  align-items: center;
}

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

.footer-copyright {
  color: var(--color-text-muted);
  font-size: 0.82rem;
  opacity: 0.7;
}

/* ─── DIVIDER ─────────────────────────────────────────────────────────────── */

.section-divider {
  width: 60px;
  height: 2px;
  background: var(--gradient-accent);
  margin: 0 auto 2rem;
  border-radius: 2px;
}

/* ─── HIGHLIGHT BOX ───────────────────────────────────────────────────────── */

.highlight-box {
  background: rgba(46, 204, 113, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.highlight-box p {
  color: var(--color-text-muted);
  font-size: 0.93rem;
}

/* ─── SCREENSHOT GRID ─────────────────────────────────────────────────────── */

.screenshot-grid {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding: 1rem 0 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.screenshot-grid img {
  border-radius: var(--radius);
  border: 1px solid rgba(0, 212, 255, 0.15);
  flex-shrink: 0;
}

/* ─── TABLET — 1024px ─────────────────────────────────────────────────────── */

@media (max-width: 1024px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: rgba(13, 13, 13, 0.98);
    flex-direction: column;
    padding: 0.75rem;
    border-bottom: 1px solid var(--color-border);
    gap: 0.15rem;
    max-height: 80vh;
    overflow-y: auto;
  }

  .nav-links.active { display: flex; }

  .nav-links a {
    font-size: 0.9rem;
    padding: 0.65rem 1rem;
    min-height: 44px;
    display: flex;
    align-items: center;
    border-radius: var(--radius-sm);
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding: 6.5rem 1.5rem 4rem;
  }

  .feature-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

  .protocol-grid {
    grid-template-columns: 1fr;
  }
}

/* ─── MOBILE — 768px ──────────────────────────────────────────────────────── */

@media (max-width: 768px) {
  .nav { padding: 0.65rem 1rem; }

  .nav-logo { font-size: 1.1rem; }

  .nav-logo-img { width: 24px; height: 24px; }

  .hero {
    min-height: 65vh;
    padding: 6rem 1rem 3rem;
  }

  .two-col {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .section {
    padding: 2.75rem 1rem;
  }

  .section-title {
    font-size: 1.4rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .protocol-grid {
    grid-template-columns: 1fr;
  }

  .stat-row {
    gap: 0.75rem;
  }

  .stat-badge {
    min-width: 100px;
    padding: 0.75rem 1rem;
  }

  .stat-badge .stat-value {
    font-size: 1.3rem;
  }

  .cert-showcase {
    padding: 1.5rem 1rem;
  }

  .cta-section {
    padding: 3rem 1rem;
  }

  .btn {
    padding: 0.8rem 1.4rem;
    font-size: 0.78rem;
  }

  .footer-links {
    gap: 0.4rem 1rem;
  }

  .screenshot-grid {
    flex-wrap: nowrap;
    justify-content: flex-start;
  }

  .game-tags, .mode-tags {
    justify-content: flex-start;
  }
}

/* ─── MOBILE — 480px ──────────────────────────────────────────────────────── */

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
    letter-spacing: 0.05em;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
  }

  .two-col {
    gap: 1rem;
  }

  .section {
    padding: 2.25rem 0.875rem;
  }

  .protocol-card {
    padding: 1.25rem;
  }
}