.hero {
  padding: 68px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  align-items: center;
  gap: 42px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.6px;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 16px;
  max-width: 12ch;
  color: var(--color-primary);
  font-size: clamp(2.3rem, 5vw, 3.4rem);
  line-height: 1.08;
}

.hero p {
  margin: 0 0 24px;
  max-width: 55ch;
  color: var(--color-text-soft);
  font-size: 1.02rem;
}

.hero-image img {
  width: 100%;
  height: 460px;
  object-fit: cover;
  border-radius: 22px;
  box-shadow: var(--shadow-medium);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.category-card {
  display: block;
  padding: 24px 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  color: var(--color-primary);
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  box-shadow: 0 6px 18px rgba(19, 34, 87, 0.05);
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    border-color var(--transition);
}

.category-card:hover {
  transform: translateY(-4px);
  border-color: #bcc8f2;
  box-shadow: var(--shadow-medium);
}

.seller-buyer-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.info-card {
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: 18px;
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.info-card h2,
.info-card h3 {
  margin: 0 0 10px;
  color: var(--color-primary);
}

.info-card p {
  margin: 0;
  color: var(--color-text-soft);
}
.book-filter {
  margin: 0 0 28px;
}

.book-search-field {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 760px;
}

.book-search-field input {
  flex: 1;
  min-width: 0;
  padding: 13px 16px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: #ffffff;
  color: var(--color-text);
  font: inherit;
}

.book-search-field input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 42, 120, 0.1);
}

.book-search-clear {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: #ffffff;
  color: var(--color-primary);
  font-weight: 700;
  cursor: pointer;
}

.book-search-message {
  margin: 10px 0 0;
  color: var(--color-text-soft);
  font-size: 0.9rem;
}

@media (max-width: 650px) {
  .book-search-field {
    flex-direction: column;
    align-items: stretch;
  }

  .book-search-field .btn,
  .book-search-clear {
    width: 100%;
  }
}