/* ========================================
   OLIMPI — Catalog with StPageFlip
   Realistic paper-folding page turns
   ======================================== */

/* Body */
.catalog-body {
  background: var(--off-white);
  min-height: 100vh;
}

/* Banner */
.catalog-banner {
  padding: 40px 0;
  text-align: center;
  background: var(--footer-bg);
  color: #fff;
}
.catalog-banner .section-tag {
  color: var(--accent-light);
}
.catalog-banner__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 400;
  color: #fff;
  line-height: 1.1;
}

/* ========================================
   VIEWER CONTAINER
   ======================================== */
.catalog-viewer {
  padding: 40px 0 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.catalog-wrapper {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================================
   TOOLBAR
   ======================================== */
.catalog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: #1a1a2e;
  border-radius: 12px 12px 0 0;
}

.toolbar-left, .toolbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tool-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: rgba(255,255,255,0.6);
  cursor: pointer;
  transition: .3s all ease;
}
.tool-btn:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
}
.tool-btn--sound.active {
  color: var(--accent-light);
}
.tool-btn--sound:not(.active) {
  opacity: 0.4;
}

.page-indicator {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: rgba(255,255,255,0.6);
  padding: 0 12px;
  user-select: none;
}

/* ========================================
   BOOK SCENE — The surface / desk
   ======================================== */
.book-scene {
  width: 100%;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 30px 60px;
  /* Soft surface like a desk */
  background:
    radial-gradient(ellipse at 50% 100%, rgba(0,0,0,0.06) 0%, transparent 70%),
    linear-gradient(180deg, #eae8e4 0%, #e2dfd9 100%);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 4px 4px;
  overflow: hidden;
  position: relative;
}

/* ========================================
   StPageFlip — Page content styling
   ======================================== */
.page-content {
  background: #fefdfb;
  overflow: hidden;
}

/* The library's parent wrapper */
.stf__parent {
  margin: 0 auto;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

/* When on cover, shift book left so the right-side cover is centered */
.book-scene.on-cover .stf__parent {
  transform: translateX(-25%);
}
/* When on back cover, shift right so the left-side back cover is centered */
.book-scene.on-back-cover .stf__parent {
  transform: translateX(25%);
}

/* ========================================
   PAGE INNER — Content containers
   ======================================== */
.page-inner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  /* Realistic paper: warm off-white with subtle fiber noise */
  background:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 1px,
      rgba(0,0,0,0.008) 1px,
      rgba(0,0,0,0.008) 2px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 2px,
      rgba(0,0,0,0.005) 2px,
      rgba(0,0,0,0.005) 4px
    ),
    radial-gradient(ellipse at 60% 50%, #fefdfb 0%, #faf8f4 60%, #f3f0ea 100%);
  box-shadow: inset 0 1px 0 rgba(0,0,0,0.03);
}

/* Page number */
.page-num {
  margin-top: auto;
  text-align: center;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  color: var(--gray-300);
  padding-top: 12px;
}

/* ========================================
   COVER PAGES
   ======================================== */
.cover-front, .cover-back {
  background: linear-gradient(135deg, #E4003A 0%, #F06D2D 100%);
  color: #fff;
  padding: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cover-front {
  background: linear-gradient(135deg, #E4003A 0%, #F06D2D 100%);
}
.cover-front::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../img/hero.jpg') center/cover no-repeat;
  opacity: 0.2;
  z-index: 0;
}

.cover-accent {
  position: absolute;
  top: -50%;
  right: -30%;
  width: 80%;
  height: 200%;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 60%);
  opacity: 1;
  transform: rotate(-15deg);
  pointer-events: none;
}

.cover-content {
  position: relative;
  z-index: 2;
}

.cover-tag {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  margin-bottom: 16px;
}

.cover-title {
  font-family: 'Montserrat', system-ui, sans-serif;
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 900;
  letter-spacing: 0.12em;
  line-height: 1;
  margin-bottom: 16px;
}

.cover-line {
  width: 48px;
  height: 3px;
  background: rgba(255,255,255,0.5);
  margin: 0 auto 16px;
}

.cover-sub {
  font-size: 14px;
  font-weight: 400;
  color: rgba(255,255,255,0.5);
  margin-bottom: 8px;
}

.cover-year {
  font-family: var(--font-display);
  font-size: 28px;
  color: var(--accent);
  margin-top: 12px;
}

.cover-footer {
  position: absolute;
  bottom: 28px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 24px;
  font-size: 11px;
  color: rgba(255,255,255,0.35);
  z-index: 2;
}

/* Back cover */
.cover-back-title {
  font-family: var(--font-body);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}
.cover-back-tagline {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 24px;
}
.cover-back-copy {
  font-size: 11px;
  color: rgba(255,255,255,0.35);
}

/* ========================================
   TABLE OF CONTENTS
   ======================================== */
.page-toc {
  padding: 40px 36px;
}

.page-heading {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 400;
  color: var(--heading);
  margin-bottom: 32px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--heading);
}

.toc-list {
  display: flex;
  flex-direction: column;
}

.toc-item {
  display: flex;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--heading);
  transition: color .3s ease;
  cursor: pointer;
}
.toc-item:hover {
  color: var(--accent);
}

.toc-name {
  font-size: 15px;
  font-weight: 500;
  flex-shrink: 0;
}

.toc-dots {
  flex: 1;
  border-bottom: 1px dotted var(--gray-300);
  margin: 0 12px;
  min-width: 20px;
  position: relative;
  top: -4px;
}

.toc-page {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--accent);
  flex-shrink: 0;
}

/* ========================================
   CATEGORY HERO PAGES
   ======================================== */
.page-category {
  padding: 0;
}

.cat-hero-block {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: #fff;
  padding: 40px 32px;
  position: relative;
  overflow: hidden;
}

.cat-hero-img {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.cat-hero-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}
.cat-hero-overlay {
  position: absolute;
  inset: 0;
  background: inherit;
  opacity: 0.7;
  z-index: 1;
}
.cat-hero-tag,
.cat-hero-title,
.cat-hero-desc,
.cat-hero-count {
  position: relative;
  z-index: 2;
}

.cat-hero-block::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: rgba(255,255,255,0.15);
  z-index: 3;
}

.cat-hero-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
}

.cat-hero-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 400;
  line-height: 1.1;
  margin-bottom: 12px;
}

.cat-hero-desc {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  max-width: 280px;
  line-height: 1.5;
  margin-bottom: 20px;
}

.cat-hero-count {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-light);
  letter-spacing: 0.04em;
}

/* ========================================
   PRODUCT LISTING PAGES
   ======================================== */
.page-products {
  padding: 28px 24px;
}

.products-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.products-header h3 {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  color: var(--heading);
  flex-shrink: 0;
}

.products-cat-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  flex: 1;
}

.product-item {
  background: var(--off-white);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px;
  display: flex;
  flex-direction: column;
}

.product-img-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #e8e8e6, #d8d8d4);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 10px;
}
.product-img-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-item h4 {
  font-size: 12px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 3px;
  line-height: 1.3;
}

.product-detail {
  font-size: 10px;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 4px;
}

.product-spec {
  font-size: 10px;
  font-weight: 600;
  color: var(--accent);
  margin-top: auto;
}

/* ========================================
   CONTACT PAGE
   ======================================== */
.page-contact-info {
  padding: 40px 36px;
}

.contact-block {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 32px;
}

.contact-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  border-radius: 50%;
  color: #fff;
  flex-shrink: 0;
}

.contact-row h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 2px;
}
.contact-row p {
  font-size: 13px;
  color: var(--text);
}

.contact-socials {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}
.contact-socials span {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
}
.contact-socials a {
  font-size: 12px;
  color: var(--accent);
  font-weight: 500;
}
.contact-socials a:hover {
  text-decoration: underline;
}

/* ========================================
   PAGE ARROWS (side navigation)
   ======================================== */
.page-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text);
  cursor: pointer;
  transition: .3s all ease;
  z-index: 100;
}
.page-arrow:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.page-arrow--left { left: 8px; }
.page-arrow--right { right: 8px; }

/* ========================================
   THUMBNAILS
   ======================================== */
.catalog-thumbs {
  display: flex;
  gap: 8px;
  justify-content: center;
  padding: 24px 0;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
}

.thumb {
  position: relative;
  width: 64px;
  height: 32px;
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 600;
  color: var(--text);
  transition: .3s all ease;
  gap: 2px;
}
.thumb:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.thumb.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

/* ========================================
   FULLSCREEN
   ======================================== */
.catalog-wrapper.fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  max-width: none;
  z-index: 9999;
  background: var(--off-white);
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.catalog-wrapper.fullscreen .book-scene {
  flex: 1;
  max-height: none;
  border-radius: 0;
}

.catalog-wrapper.fullscreen .page-arrow--left { left: 16px; }
.catalog-wrapper.fullscreen .page-arrow--right { right: 16px; }

/* ========================================
   ZOOM — Scale the book container
   ======================================== */
.book-scene.zoomed-in {
  overflow: auto;
  cursor: grab;
}
.book-scene.zoomed-in .stf__parent {
  transform: scale(1.3);
  transform-origin: center center;
}
.book-scene.zoomed-in:active {
  cursor: grabbing;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1200px) {
  .page-arrow--left { left: 4px; }
  .page-arrow--right { right: 4px; }
  .page-arrow {
    width: 40px;
    height: 40px;
  }
  .book-scene {
    padding: 20px 50px;
  }
}

@media (max-width: 900px) {
  .book-scene {
    min-height: 400px;
    padding: 20px 40px;
  }
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .page-inner {
    padding: 24px 20px;
  }
  .cover-title { font-size: 28px; }
}

@media (max-width: 640px) {
  .catalog-banner { padding: 32px 0; }
  .catalog-wrapper { padding: 0 8px; }

  .book-scene {
    min-height: 320px;
    padding: 12px 8px;
  }

  .catalog-toolbar {
    flex-wrap: wrap;
    gap: 8px;
    padding: 8px 12px;
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }

  .page-inner {
    padding: 16px 14px;
  }
  .page-products { padding: 16px 12px; }

  .product-item { padding: 8px; }
  .product-item h4 { font-size: 11px; }
  .product-detail { font-size: 9px; }
  .product-spec { font-size: 9px; }

  .page-heading { font-size: 22px; margin-bottom: 20px; }
  .toc-name { font-size: 13px; }
  .toc-item { padding: 10px 0; }

  .cat-hero-title { font-size: 22px; }
  .cat-hero-desc { font-size: 12px; }

  .page-arrow {
    width: 36px;
    height: 36px;
  }
  .page-arrow--left { left: 2px; }
  .page-arrow--right { right: 2px; }

  .thumb { width: 48px; height: 24px; font-size: 9px; }
}