/* ===== CHAPTERS PAGE ===== */

/* Hero */
.chapters-hero {
  position: relative;
  z-index: 1;
  min-height: 85vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.chapters-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(
    160deg,
    rgba(255, 255, 255, 0.03) 0%,
    transparent 40%,
    transparent 60%,
    rgba(255, 255, 255, 0.02) 100%
  );
}

.chapters-hero .container {
  position: relative;
  z-index: 2;
  padding-top: 200px;
  padding-bottom: var(--space-xl);
}

.chapters-hero__subtitle {
  max-width: 540px;
  font-size: var(--font-size-body);
  color: var(--color-gray-300);
  line-height: 1.8;
  margin-top: var(--space-md);
  margin-bottom: var(--space-lg);
}

.chapters-hero__cta {
  text-decoration: none;
}

/* ===== WHAT WE PROVIDE ===== */
.chapters-provide {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.chapters-provide__card {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  position: relative;
  overflow: hidden;
  transition: background var(--transition-medium),
              border-color var(--transition-medium),
              transform var(--transition-medium),
              box-shadow var(--transition-medium);
}

.chapters-provide__card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.chapters-provide__number {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.06);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.chapters-provide__title {
  font-size: var(--font-size-h3);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.chapters-provide__desc {
  font-size: var(--font-size-small);
  color: var(--color-gray-300);
  line-height: 1.7;
}

/* ===== CHAPTER PLAYBOOK ===== */
.chapters-playbook {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.chapters-playbook__card {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-md);
  padding: 28px var(--space-md) var(--space-md);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: background var(--transition-medium),
              border-color var(--transition-medium),
              transform var(--transition-medium),
              box-shadow var(--transition-medium);
}

.chapters-playbook__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.chapters-playbook__card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.chapters-playbook__card:hover::before {
  opacity: 1;
}

/* Featured card (guide) */
.chapters-playbook__card--featured {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: center;
  gap: var(--space-md);
  padding: 36px 40px;
  background: linear-gradient(135deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
  border-color: rgba(255, 255, 255, 0.18);
}

.chapters-playbook__card--featured .chapters-playbook__icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  margin-bottom: 0;
}

.chapters-playbook__card--featured .chapters-playbook__title {
  font-size: var(--font-size-h3);
}

.chapters-playbook__card--featured .chapters-playbook__desc {
  max-width: 480px;
}

.chapters-playbook__card--featured .chapters-playbook__link {
  margin-top: 12px;
}

.chapters-playbook__badge {
  position: absolute;
  top: 12px;
  right: 16px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: rgba(255, 255, 255, 0.5);
  padding: 3px 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
}

.chapters-playbook__icon {
  color: rgba(255, 255, 255, 0.3);
  margin-bottom: var(--space-sm);
  transition: color var(--transition-medium);
}

.chapters-playbook__card:hover .chapters-playbook__icon {
  color: rgba(255, 255, 255, 0.6);
}

.chapters-playbook__title {
  font-size: var(--font-size-body);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.chapters-playbook__desc {
  font-size: var(--font-size-small);
  color: var(--color-gray-300);
  line-height: 1.7;
  flex: 1;
}

.chapters-playbook__link {
  font-family: var(--font-mono);
  font-size: var(--font-size-label);
  color: rgba(255, 255, 255, 0.35);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  transition: color var(--transition-fast);
}

.chapters-playbook__card:hover .chapters-playbook__link {
  color: var(--color-white);
}

/* ===== CHAPTER RULES ===== */
.chapters-rules {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.chapters-rule {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: background var(--transition-medium),
              border-color var(--transition-medium),
              transform var(--transition-medium),
              box-shadow var(--transition-medium);
}

.chapters-rule:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.chapters-rule__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.chapters-rule__icon {
  font-family: var(--font-mono);
  font-size: var(--font-size-label);
  font-weight: 700;
  color: rgba(255, 255, 255, 0.3);
  letter-spacing: 0.1em;
  flex-shrink: 0;
}

.chapters-rule__title {
  font-size: var(--font-size-body);
  font-weight: 600;
  color: var(--color-white);
}

.chapters-rule__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chapters-rule__list li {
  position: relative;
  padding-left: 16px;
  font-size: var(--font-size-small);
  color: var(--color-gray-300);
  line-height: 1.65;
}

.chapters-rule__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
}

.chapters-rule__list li strong {
  color: var(--color-white);
  font-weight: 600;
}

/* ===== HOW TO START ===== */
.chapters-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.chapters-step {
  padding: var(--space-md);
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  transition: background var(--transition-medium),
              border-color var(--transition-medium),
              transform var(--transition-medium),
              box-shadow var(--transition-medium);
}

.chapters-step:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.chapters-step__number {
  display: block;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.08);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.chapters-step__title {
  font-size: var(--font-size-body);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.chapters-step__desc {
  font-size: var(--font-size-small);
  color: var(--color-gray-300);
  line-height: 1.7;
}

/* ===== CTA ===== */
.chapters-cta {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
}

.chapters-cta__text {
  font-size: var(--font-size-h3);
  font-weight: 500;
  color: var(--color-gray-300);
  margin-bottom: var(--space-md);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .chapters-provide,
  .chapters-rules {
    grid-template-columns: 1fr;
  }

  .chapters-playbook {
    grid-template-columns: repeat(2, 1fr);
  }

  .chapters-playbook__card--featured {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .chapters-playbook__card--featured .chapters-playbook__icon {
    margin-bottom: var(--space-xs);
  }

  .chapters-steps {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .chapters-hero {
    min-height: 70vh;
  }

  .chapters-hero .container {
    padding-top: 140px;
    padding-bottom: var(--space-lg);
  }

  .chapters-playbook {
    grid-template-columns: 1fr;
  }
}