:root {
  --verde: #2d6a2d;
  --amarillo: #f5e642;
  --fucsia: #e8357a;
  --negro: #1a1a1a;
  --crema: #fdfbf0;
  --gris-texto: #6b6b5a;
  --gris-borde: #d4d0b8;
  --gris-fondo: #f0eee4;
  --blanco: #ffffff;
  --font-principal: "Stack Sans Headline", system-ui, sans-serif;
  --font-display: "Alegreya SC", Georgia, serif;
  --font-logo: "Bangers", Impact, sans-serif;
}

* {
  box-sizing: border-box;
  letter-spacing: 0;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--crema);
  color: var(--negro);
  font-family: var(--font-principal);
}

button,
input {
  font: inherit;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 188px 1fr;
}

.sidebar {
  background: var(--verde);
  padding: 22px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 26px;
}

.brand {
  width: 100%;
  background: var(--amarillo);
  color: var(--negro);
  text-decoration: none;
  text-align: center;
  padding: 8px 12px 9px;
  display: flex;
  flex-direction: column;
}

.brand-main,
.brand-sub {
  font-family: var(--font-logo);
  line-height: 1;
}

.brand-main {
  font-size: 30px;
}

.brand-sub {
  font-size: 14px;
  letter-spacing: 2px;
}

.sidebar-section {
  width: 100%;
  min-width: 0;
}

.sidebar-title {
  margin: 0 0 10px;
  color: var(--amarillo);
  font-family: var(--font-display);
  font-size: 18px;
  text-align: center;
}

.genre-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.genre-button {
  min-height: 30px;
  border: 1px solid rgba(245, 230, 66, 0.22);
  background: rgba(255, 255, 255, 0.08);
  color: #d6ead6;
  border-radius: 4px;
  padding: 6px 8px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.genre-button:hover,
.genre-button.active {
  background: var(--amarillo);
  color: var(--negro);
  border-color: var(--amarillo);
}

.content {
  min-width: 0;
}

.topbar {
  background: var(--negro);
  color: var(--blanco);
  min-height: 78px;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.eyebrow {
  margin: 0 0 2px;
  color: var(--amarillo);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 500;
}

.meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 3px;
  color: #d8d8ca;
  font-size: 12px;
  font-weight: 700;
}

.yellow-line {
  height: 4px;
  background: var(--amarillo);
}

.filters {
  background: var(--blanco);
  border-bottom: 1px solid var(--gris-borde);
  padding: 12px 18px;
  display: grid;
  grid-template-columns: minmax(160px, 1fr) minmax(160px, 0.8fr) minmax(160px, 0.8fr) auto;
  gap: 10px;
  align-items: end;
}

.search-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--gris-texto);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
}

.search-field input {
  width: 100%;
  border: 1px solid var(--gris-borde);
  border-radius: 5px;
  background: var(--blanco);
  color: var(--negro);
  padding: 7px 10px;
  font-size: 13px;
  outline: none;
}

.search-field input:focus {
  border-color: var(--fucsia);
  box-shadow: 0 0 0 2px rgba(232, 53, 122, 0.12);
}

.clear-button {
  border: none;
  border-radius: 5px;
  background: var(--negro);
  color: var(--amarillo);
  min-height: 34px;
  padding: 7px 16px;
  font-size: 11px;
  font-weight: 900;
  cursor: pointer;
}

.catalog-area {
  padding: 18px;
}

.status {
  color: var(--gris-texto);
  padding: 36px 12px;
  text-align: center;
  font-weight: 700;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 14px;
}

.book-card {
  background: var(--blanco);
  border: 1px solid #e8e6d8;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.book-state {
  background: var(--verde);
  color: var(--blanco);
  padding: 5px 8px;
  text-align: center;
  font-size: 9px;
  font-weight: 900;
}

.book-cover {
  margin: 10px 10px 7px;
  height: 190px;
  border-radius: 5px;
  background: var(--verde);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: var(--amarillo);
  font-family: var(--font-logo);
  font-size: 30px;
}

.book-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.book-info {
  padding: 0 12px 14px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex: 1;
}

.book-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.15;
}

.book-author,
.book-editorial {
  margin: 0;
  color: var(--gris-texto);
  font-size: 12px;
}

.book-price {
  margin: 2px 0 0;
  color: var(--verde);
  font-size: 14px;
  font-weight: 900;
}

.book-genres {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px;
  margin-top: 4px;
}

.book-genre {
  border-radius: 10px;
  background: var(--gris-fondo);
  color: var(--gris-texto);
  padding: 2px 7px;
  font-size: 10px;
  font-weight: 700;
}

@media (max-width: 820px) {
  .app-shell {
    display: block;
  }

  .sidebar {
    padding: 12px;
    align-items: stretch;
    gap: 12px;
  }

  .brand {
    max-width: 180px;
    align-self: center;
  }

  .genre-list {
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: 3px;
  }

  .genre-button {
    min-width: max-content;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .meta {
    align-items: flex-start;
  }

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

  .catalog-grid {
    grid-template-columns: repeat(auto-fill, minmax(145px, 1fr));
  }

  .book-cover {
    height: 165px;
  }
}