* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  scroll-behavior: smooth;
}

body {
  background-color: #090d16;
  color: #f8fafc;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

.bg-glow {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, rgba(59, 130, 246, 0.1) 40%, rgba(9, 13, 22, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  background: rgba(9, 13, 22, 0.8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 16px 0;
}

.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-tiles {
  display: flex;
  gap: 4px;
}

.brand-name {
  font-weight: 700;
  font-size: 18px;
  color: #ffffff;
}

.tile {
  width: 26px;
  height: 26px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 13px;
  color: #ffffff;
}

.tile.green { background: #10b981; }
.tile.yellow { background: #f59e0b; }
.tile.gray { background: #475569; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  color: #94a3b8;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: #ffffff;
}

.github-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 8px 16px;
  border-radius: 8px;
  color: #ffffff !important;
  font-weight: 600 !important;
  transition: all 0.2s ease;
}

.github-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Hero Section */
.hero {
  padding: 80px 24px 60px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-container {
  max-width: 800px;
  margin: 0 auto;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  color: #34d399;
  margin-bottom: 24px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.hero-title {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, #10b981 0%, #38bdf8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 18px;
  color: #94a3b8;
  max-width: 620px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 50px;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s ease;
  border: none;
}

.primary-cta {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  box-shadow: 0 10px 25px -5px rgba(16, 185, 129, 0.4);
}

.primary-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 30px -5px rgba(16, 185, 129, 0.5);
  background: linear-gradient(135deg, #34d399 0%, #059669 100%);
}

.secondary-cta {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #f8fafc;
}

.secondary-cta:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Mockup Card */
.mockup-card {
  background: #1e293b;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  max-width: 480px;
  margin: 0 auto;
}

.mockup-header {
  background: #0f172a;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #10b981; }

.mockup-url {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: #64748b;
  margin-left: 12px;
}

.mockup-body {
  padding: 30px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.wordle-board-demo {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.demo-row {
  display: flex;
  gap: 8px;
}

.demo-tile {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 20px;
  color: #ffffff;
  background: #3a3a3c;
  border: 2px solid #565758;
  transform-style: preserve-3d;
  transition: background 0s;
  position: relative;
}

/* Letter pop-in: tile scales up briefly when a letter is typed */
@keyframes tile-pop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.12); }
  100% { transform: scale(1); }
}

/* Tile flip: front half (tile rotates away) */
@keyframes flip-down {
  0%   { transform: rotateX(0deg); }
  100% { transform: rotateX(-90deg); }
}

/* Tile flip: back half (tile rotates in with new color) */
@keyframes flip-up {
  0%   { transform: rotateX(90deg); }
  100% { transform: rotateX(0deg); }
}

/* Bounce animation shown after solving */
@keyframes tile-bounce {
  0%   { transform: translateY(0); }
  40%  { transform: translateY(-14px); }
  60%  { transform: translateY(-7px); }
  80%  { transform: translateY(-4px); }
  100% { transform: translateY(0); }
}

.demo-tile.pop {
  animation: tile-pop 0.1s ease;
}

.demo-tile.flip-out {
  animation: flip-down 0.25s ease-in forwards;
}

.demo-tile.flip-in {
  animation: flip-up 0.25s ease-out forwards;
}

.demo-tile.bounce {
  animation: tile-bounce 0.4s ease;
}

/* Colored states — applied after flip */
.demo-tile.green { background: #538d4e; border-color: #538d4e; }
.demo-tile.yellow { background: #b59f3b; border-color: #b59f3b; }
.demo-tile.gray  { background: #3a3a3c; border-color: #3a3a3c; }

.solver-overlay-badge {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid #10b981;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  color: #34d399;
}

/* Sections */
.section {
  padding: 80px 24px;
  position: relative;
}

.alt-bg {
  background: #0d1322;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.section-container {
  max-width: 1100px;
  margin: 0 auto;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  text-align: center;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 16px;
  color: #94a3b8;
  text-align: center;
  margin-bottom: 48px;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.feature-card {
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 28px 24px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(16, 185, 129, 0.3);
  background: rgba(30, 41, 59, 0.8);
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: #94a3b8;
}

/* Steps Grid */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.step-card {
  background: #1e293b;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 32px 24px;
  position: relative;
}

.step-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: 36px;
  font-weight: 800;
  color: #10b981;
  margin-bottom: 16px;
  opacity: 0.8;
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-card p {
  font-size: 14px;
  color: #94a3b8;
}

.step-card code {
  background: #0f172a;
  padding: 2px 6px;
  border-radius: 4px;
  color: #38bdf8;
  font-family: 'JetBrains Mono', monospace;
}

/* Creator Card */
.creator-card {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.8) 0%, rgba(15, 23, 42, 0.8) 100%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  padding: 40px;
  max-width: 680px;
  margin: 0 auto;
}

.creator-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.creator-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  flex-shrink: 0;
  object-fit: cover;
  object-position: top center;
  border: 2px solid rgba(16, 185, 129, 0.4);
}

.creator-info h3 {
  font-size: 20px;
  font-weight: 700;
}

.creator-info p {
  font-size: 14px;
  color: #94a3b8;
}

.creator-bio {
  font-size: 15px;
  color: #cbd5e1;
  margin-bottom: 24px;
}

.creator-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
}

.social-link.linkedin {
  background: #0a66c2;
  color: #ffffff;
}

.social-link.linkedin:hover {
  background: #004182;
}

.social-link.github {
  background: #24292e;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.social-link.github:hover {
  background: #1b1f23;
}

/* Footer */
.footer {
  text-align: center;
  padding: 40px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 13px;
  color: #64748b;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title { font-size: 36px; }
  .hero-description { font-size: 16px; }
  .hero-actions { flex-direction: column; }
  .nav-links { display: none; }
}

/* ── Browser Compatibility Strip ───────────────────────────────────────────── */
.browser-strip {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 40px;
  padding: 10px 24px;
  margin-bottom: 36px;
  flex-wrap: wrap;
  justify-content: center;
}

.browser-item {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 600;
  color: #cbd5e1;
}

.browser-tag {
  background: rgba(16,185,129,0.15);
  border: 1px solid rgba(16,185,129,0.35);
  color: #34d399;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 20px;
}

.browser-sep {
  color: rgba(255,255,255,0.2);
  font-size: 18px;
  line-height: 1;
}

/* ── Install Tip Callouts ───────────────────────────────────────────────────── */
.install-tip {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 12px;
  padding: 16px 20px;
  margin-top: 32px;
  font-size: 14px;
  color: #cbd5e1;
  line-height: 1.7;
}

.tip-icon {
  font-size: 20px;
  flex-shrink: 0;
  margin-top: 2px;
}

.tip-body strong {
  color: #f1f5f9;
}

/* ── FAQ Accordion ──────────────────────────────────────────────────────────── */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: rgba(30,41,59,0.5);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.25s ease;
}

.faq-item[open] {
  border-color: rgba(16,185,129,0.3);
}

.faq-question {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  font-size: 15px;
  font-weight: 600;
  color: #f1f5f9;
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
  gap: 12px;
}

.faq-question::-webkit-details-marker { display: none; }

.faq-question::after {
  content: '+';
  font-size: 22px;
  font-weight: 300;
  color: #10b981;
  flex-shrink: 0;
  transition: transform 0.25s ease;
}

.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 22px 18px;
  font-size: 14px;
  color: #94a3b8;
  line-height: 1.75;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 14px;
}

.faq-answer code {
  background: #0f172a;
  padding: 2px 6px;
  border-radius: 4px;
  color: #38bdf8;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
}

.faq-answer strong {
  color: #e2e8f0;
}

/* Demo badge — hidden by default, shown via JS after solve animation */
#demo-badge {
  opacity: 0;
  transition: opacity 0.5s ease;
}

/* Inline green link — used in install step text */
.green-link {
  color: #10b981;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.green-link:hover {
  color: #34d399;
}