/* ─── Product Page Styles ─── */

.product-hero {
  padding: 140px 48px 80px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.product-hero-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.product-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--accent);
  margin-bottom: 36px;
}

.badge-dot {
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.product-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.product-title {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
}

.title-accent {
  font-size: clamp(2.5rem, 5vw, 4rem);
  color: var(--accent);
}

.title-main {
  font-size: clamp(2.5rem, 5vw, 4rem);
  color: var(--fg);
}

.title-sub {
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  color: var(--fg-muted);
  font-weight: 600;
  margin-top: 4px;
}

.product-tagline {
  font-size: 1.1rem;
  font-family: var(--font-mono);
  color: var(--accent);
  margin-bottom: 16px;
}

.product-description {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 420px;
}

.product-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-bottom: 28px;
}

.meta-sep { color: var(--bg-3); }

.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
  cursor: pointer;
  border: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(189, 255, 0, 0.2);
}

.product-cover-wrap {
  position: relative;
  display: flex;
  justify-content: center;
}

.cover-glow {
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(189,255,0,0.15) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.product-cover-img {
  width: 100%;
  max-width: 360px;
  border-radius: 12px;
  box-shadow: 0 32px 64px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.05);
  position: relative;
  z-index: 1;
}

.cover-badges {
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.cover-badge {
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
}

/* ─── Inside Section ─── */
.inside-section {
  padding: 80px 48px;
  background: var(--bg-2);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.inside-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 40px;
  letter-spacing: -0.02em;
}

.chapters-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.chapter-card {
  background: var(--bg-3);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: border-color 0.2s;
}

.chapter-card:hover {
  border-color: var(--accent-border);
}

.chapter-number {
  font-family: var(--font-head);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  min-width: 40px;
}

.chapter-name {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.chapter-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-muted);
  margin-bottom: 8px;
}

.chapter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.tag {
  background: var(--accent-dim);
  color: var(--accent);
  font-size: 0.65rem;
  padding: 2px 8px;
  border-radius: 999px;
  font-family: var(--font-mono);
}

/* ─── Sample Section ─── */
.sample-section {
  padding: 80px 48px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-subtitle {
  color: var(--fg-muted);
  font-size: 1rem;
  margin-top: -32px;
  margin-bottom: 40px;
}

.samples-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.sample-card {
  background: var(--bg-2);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  overflow: hidden;
}

.sample-header {
  padding: 16px 20px 8px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.sample-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 700;
}

.sample-name {
  font-weight: 700;
  font-size: 0.9rem;
}

.sample-use {
  padding: 0 20px 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-muted);
}

.sample-prompt {
  padding: 12px 20px;
  background: var(--bg-3);
  margin: 0;
}

.sample-prompt code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-muted);
  line-height: 1.6;
  display: block;
  white-space: pre-wrap;
  word-break: break-word;
}

.sample-why {
  padding: 12px 20px 16px;
  font-size: 0.78rem;
  color: var(--accent);
  font-family: var(--font-mono);
}

/* ─── Who Section ─── */
.who-section {
  padding: 80px 48px;
  background: var(--bg-2);
}

.who-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.who-list {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.who-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 1rem;
  color: var(--fg);
}

.who-check {
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

.who-not {
  margin-top: 24px;
  padding: 16px 20px;
  background: var(--bg-3);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--fg-muted);
  border-left: 3px solid var(--accent-border);
}

/* ─── Pricing Section ─── */
.pricing-section {
  padding: 80px 48px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.pricing-card {
  max-width: 480px;
  background: var(--bg-2);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 999px;
}

.pricing-name {
  font-family: var(--font-head);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 24px;
  text-align: center;
}

.pricing-includes {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}

.include-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--fg);
}

.include-check {
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-price {
  text-align: center;
  margin-bottom: 20px;
}

.price-amount {
  display: block;
  font-family: var(--font-head);
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
}

.price-note {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

.btn-buy {
  width: 100%;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 24px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  margin-bottom: 12px;
}

.btn-buy:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(189, 255, 0, 0.25);
}

.btn-buy:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.guarantee {
  text-align: center;
  font-size: 0.78rem;
  color: var(--fg-muted);
}

.payment-error {
  text-align: center;
  font-size: 0.8rem;
  color: #ff6b6b;
  margin-top: 8px;
}

/* ─── Footer ─── */
.site-footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 32px 48px;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--fg-muted);
  font-size: 0.85rem;
  transition: color 0.2s;
}

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

.footer-copy {
  font-size: 0.75rem;
  color: var(--fg-muted);
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .product-hero { padding: 100px 24px 60px; }
  .product-layout { grid-template-columns: 1fr; gap: 40px; }
  .product-cover-img { max-width: 280px; margin: 0 auto; display: block; }
  .chapters-grid { grid-template-columns: 1fr; }
  .samples-grid { grid-template-columns: 1fr; }
  .pricing-card { padding: 28px; }
  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
}