:root {
  --landing-bg: color-mix(in srgb, var(--color-bg) 98%, transparent);
}

#main.landing {
  inline-size: 100%;
  max-inline-size: 100%;
  margin-inline: 0;
  padding-block-end: 0;
  text-align: initial;
  background: transparent;
}

.landing-surface {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-block: 0;
  background: var(--landing-bg);
}

.landing__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: clamp(1.5rem, 4vw, 2.5rem);
  padding-inline: var(--shell-inline-padding, clamp(1rem, 3vw, 1.75rem));
  background: var(--landing-bg);
  border-bottom: 1px solid color-mix(in srgb, var(--color-subtle-dark) 8%, transparent);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  background: color-mix(in srgb, var(--color-bg) 90%, transparent);
}

.landing__nav-buttons {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.landing__nav-menu {
  display: none;
}

@media (max-width: 959px) {
  .landing__nav-buttons {
    display: none;
  }

  .landing__nav-menu {
    display: block;
  }
}

/* Home: primary landing content (replaces former full-viewport hero) */
.landing__home {
  --landing-home-gutter: var(--shell-inline-padding, clamp(1rem, 3vw, 1.75rem));
  /* Same vertical rhythm above the headline and below the CTA (single box, no double stack with first shelf). */
  --landing-hero-pad-y: clamp(1.5rem, 3.75vw, 2.35rem);
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
}

.landing__home-intro {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  width: 100%;
  padding-block: 0;
  padding-inline: var(--landing-home-gutter);
}

.landing__home-intro-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.landing__home-intro-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.landing__home-intro-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(15, 23, 42, 0.95) 0%,
    rgba(15, 23, 42, 0.85) 50%,
    rgba(15, 23, 42, 0.9) 100%
  );
  backdrop-filter: blur(2px);
}

.landing__home-intro-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.12) 0%, transparent 50%);
}

.landing__home-intro-body {
  position: relative;
  z-index: 1;
  text-align: start;
  padding-block: var(--landing-hero-pad-y);
}

.landing__home-title {
  margin: 0 0 0.65rem;
  font-size: clamp(1.75rem, 1.35rem + 2.2vw, 2.85rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.12;
  color: #fff;
}

.landing__home-title-line {
  display: block;
}

.landing__home-title-accent {
  background: linear-gradient(
    135deg,
    #60a5fa 0%,
    #a78bfa 50%,
    #f472b6 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
  padding-bottom: 0.06em;
}

.landing__home-title-accent::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 0.08em;
  background: linear-gradient(90deg, #60a5fa, #a78bfa, #f472b6);
  opacity: 0.5;
  border-radius: 1px;
}

.landing__home-lede {
  margin: 0 0 1.35rem;
  font-size: clamp(1.02rem, 0.95rem + 0.45vw, 1.22rem);
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.88);
}

.landing__home-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 0.85rem;
  align-items: center;
  justify-content: flex-start;
  margin-bottom: 0;
}

.landing__home-shelves {
  width: 100%;
  padding-top: 0;
  padding-bottom: 0;
  background: var(--landing-bg);
  border-top: none;
}

.landing__shelf-row {
  padding-inline: var(--landing-home-gutter);
  padding-top: clamp(1.5rem, 3.75vw, 2.35rem);
  padding-bottom: clamp(1.25rem, 3vw, 1.75rem);
  border-radius: 0.5rem;
}

.landing__shelf-row + .landing__shelf-row {
  margin-top: 0;
  border-top: 1px solid color-mix(in srgb, var(--color-subtle-dark) 8%, transparent);
}

.landing__shelf-row--surface-a {
  background: color-mix(in srgb, var(--color-subtle-light) 75%, var(--color-bg));
}

.landing__shelf-row--surface-b {
  background: color-mix(in srgb, var(--color-selected) 7%, var(--color-bg));
}

.landing__shelf-row--surface-c {
  background: color-mix(in srgb, var(--color-subtle-light) 55%, var(--color-bg));
}

/* Want to Read: true white (paper) for row, inner, carousel, and scroll track */
.landing__shelf-row--surface-white {
  --landing-shelf-paper: #fff;
  background: var(--landing-shelf-paper);
}

.landing__shelf-row--surface-white .landing__shelf-row-inner,
.landing__shelf-row--surface-white .landing__shelf-carousel,
.landing__shelf-row--surface-white .landing__shelf-row-scroll {
  background-color: var(--landing-shelf-paper);
}

@media (prefers-color-scheme: dark) {
  .landing__shelf-row--surface-white {
    --landing-shelf-paper: var(--color-bg);
  }
}

/* Paper-white row: solid fill only where we need true white; no shadow halos */
.landing__shelf-row--surface-white .landing__shelf-tile-inner {
  background-color: var(--landing-shelf-paper);
}

.landing__shelf-row--surface-white .landing__shelf-tile-cover {
  background-color: var(--landing-shelf-paper);
}

.landing__shelf-row--surface-white .landing__shelf-cover {
  background-color: var(--landing-shelf-paper);
}

/* Inner wrappers use the shelf row width (gutters come from .landing__shelf-row padding). */
.landing__shelf-row-inner {
  width: 100%;
}

.landing__shelf-row-head {
  margin-bottom: clamp(1.15rem, 3vw, 1.75rem);
}

.landing__shelf-row-title-link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  text-decoration: none;
  color: var(--color-ink);
}

.landing__shelf-row-title-link:hover .landing__shelf-row-title {
  color: var(--color-link);
}

.landing__shelf-row-title {
  margin: 0;
  font-size: clamp(1.35rem, 1.1rem + 1vw, 1.85rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.landing__shelf-row-chevron {
  font-size: 1.45rem;
  font-weight: 600;
  color: color-mix(in srgb, var(--color-ink) 45%, transparent);
  line-height: 1;
  translate: 0 0.05em;
}

.landing__shelf-row-subtitle {
  margin: 0.45rem 0 0;
  font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1.05rem);
  color: color-mix(in srgb, var(--color-ink) 56%, transparent);
  line-height: 1.45;
}

.landing__shelf-row-scroll {
  display: flex;
  gap: clamp(1.25rem, 3vw, 2.25rem);
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scroll-snap-type: x proximity;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
  background: transparent;
}

.landing__shelf-row-scroll::-webkit-scrollbar {
  display: none;
}

.landing__shelf-row-scroll:focus-visible {
  outline: 2px solid var(--color-selected);
  outline-offset: 4px;
}

/* Horizontal carousel controls (shared by all landing book rows) */
.landing__shelf-carousel {
  position: relative;
  background: transparent;
}

.landing__shelf-carousel .landing__shelf-row-scroll {
  scroll-behavior: smooth;
}

.landing__shelf-carousel-btn {
  position: absolute;
  top: 50%;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.85rem;
  height: 2.85rem;
  padding: 0;
  margin: 0;
  border: 1px solid color-mix(in srgb, var(--color-subtle-dark) 35%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  color: var(--color-ink);
  box-shadow:
    0 4px 14px color-mix(in srgb, var(--color-ink) 12%, transparent),
    0 1px 3px color-mix(in srgb, var(--color-ink) 8%, transparent);
  cursor: pointer;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transform: translateY(-50%);
  transition:
    background 150ms ease,
    color 150ms ease,
    box-shadow 150ms ease,
    transform 150ms ease;
}

.landing__shelf-carousel-btn:hover {
  background: color-mix(in srgb, var(--color-selected) 18%, var(--color-bg));
  color: var(--color-ink);
  box-shadow:
    0 6px 18px color-mix(in srgb, var(--color-ink) 14%, transparent),
    0 2px 6px color-mix(in srgb, var(--color-ink) 10%, transparent);
  transform: translateY(-50%) scale(1.04);
}

.landing__shelf-carousel-btn:focus-visible {
  outline: 2px solid var(--color-selected);
  outline-offset: 3px;
}

.landing__shelf-carousel-btn:active {
  transform: translateY(-50%) scale(0.98);
}

.landing__shelf-carousel-btn--prev {
  left: 0.15rem;
}

.landing__shelf-carousel-btn--next {
  right: 0.15rem;
}

.landing__shelf-carousel-icon {
  flex-shrink: 0;
  pointer-events: none;
}

@media (max-width: 480px) {
  .landing__shelf-carousel-btn {
    width: 2.4rem;
    height: 2.4rem;
  }

  .landing__shelf-carousel-btn--prev {
    left: 0;
  }

  .landing__shelf-carousel-btn--next {
    right: 0;
  }
}

/* Bestseller tiles: same hover actions as store cards */
.landing__shelf-tile {
  flex: 0 0 auto;
  scroll-snap-align: start;
  transition: transform 200ms ease;
}

.landing__shelf-tile:hover {
  transform: translateY(-4px);
}

.landing__shelf-tile-inner {
  position: relative;
  width: 100%;
  border-radius: 0.5rem;
  overflow: hidden;
  background: transparent;
  box-shadow: none;
}

.landing__shelf-tile:hover .landing__shelf-tile-inner {
  box-shadow: none;
}

.landing__shelf-tile--portrait .landing__shelf-tile-inner {
  aspect-ratio: 2 / 3;
}

.landing__shelf-tile--square .landing__shelf-tile-inner {
  aspect-ratio: 1;
}

.landing__shelf-tile--portrait {
  width: clamp(11rem, 26vw, 15.5rem);
}

.landing__shelf-tile--square {
  width: clamp(11.25rem, 28vw, 15.75rem);
}

.landing__shelf-tile-cover {
  display: block;
  width: 100%;
  height: 100%;
  text-decoration: none;
  border-radius: 0.5rem;
  background: transparent;
}

.landing__shelf-tile-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

.landing__shelf-tile:hover .landing__shelf-tile-img {
  transform: scale(1.03);
}

.landing__shelf-tile-placeholder.store-card__placeholder {
  min-height: 100%;
  box-sizing: border-box;
  border-radius: 0.5rem;
}

.landing__shelf-tile-overlay {
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--color-ink) 88%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  border-radius: 0.5rem;
  transition: opacity 250ms cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.landing__shelf-tile:hover .landing__shelf-tile-overlay,
.landing__shelf-tile:focus-within .landing__shelf-tile-overlay {
  opacity: 1;
  pointer-events: auto;
}

.landing__shelf-tile-overlay .store-card__actions {
  width: 85%;
  max-width: 200px;
}

.landing__shelf-cover {
  flex: 0 0 auto;
  scroll-snap-align: start;
  border-radius: 0.5rem;
  overflow: hidden;
  background: transparent;
  box-shadow: none;
  transition: transform 200ms ease;
}

.landing__shelf-cover:hover {
  transform: translateY(-4px);
  box-shadow: none;
}

/* ~2× prior thumbnail size */
.landing__shelf-cover--portrait {
  width: clamp(11rem, 26vw, 15.5rem);
  aspect-ratio: 2 / 3;
}

.landing__shelf-cover--square {
  width: clamp(11.25rem, 28vw, 15.75rem);
  aspect-ratio: 1;
}

.landing__shelf-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

/* Uses .store-card__placeholder for themed default covers */
.landing__shelf-cover .store-card__placeholder {
  min-height: 100%;
  box-sizing: border-box;
}

.landing__shelf-row-empty {
  padding: 0.25rem 0 0.5rem;
}

.landing__shelf-row-empty p {
  margin: 0 0 1rem;
  font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1.05rem);
  color: color-mix(in srgb, var(--color-ink) 65%, transparent);
}

/* Post-shelves promo: same library hero look + benefit copy */
.landing__home-promo {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  width: 100%;
  margin-top: 0;
  padding-block: clamp(2.5rem, 6vw, 4rem);
  padding-inline: var(--landing-home-gutter);
}

.landing__home-promo-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.landing__home-promo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.landing__home-promo-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(15, 23, 42, 0.93) 0%,
    rgba(15, 23, 42, 0.86) 50%,
    rgba(15, 23, 42, 0.9) 100%
  );
  backdrop-filter: blur(2px);
}

.landing__home-promo-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 42%, rgba(59, 130, 246, 0.2) 0%, transparent 48%),
    radial-gradient(circle at 82% 72%, rgba(244, 114, 182, 0.14) 0%, transparent 48%),
    radial-gradient(circle at 50% 18%, rgba(167, 139, 250, 0.1) 0%, transparent 40%);
}

.landing__home-promo-body {
  position: relative;
  z-index: 1;
}

.landing__home-promo-benefits {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: clamp(1.75rem, 4vw, 2.75rem);
}

.landing__home-promo-benefit {
  display: flex;
  align-items: flex-start;
  gap: 1.1rem;
}

.landing__home-promo-benefit-icon {
  font-size: 2.25rem;
  line-height: 1;
  flex-shrink: 0;
}

.landing__home-promo-benefit-title {
  margin: 0 0 0.4rem;
  font-size: clamp(1.1rem, 1rem + 0.35vw, 1.35rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
}

.landing__home-promo-benefit-title--accent {
  background: linear-gradient(
    135deg,
    #60a5fa 0%,
    #a78bfa 50%,
    #f472b6 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
  padding-bottom: 0.08em;
}

.landing__home-promo-benefit-title--accent::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 0.07em;
  background: linear-gradient(90deg, #60a5fa, #a78bfa, #f472b6);
  opacity: 0.55;
  border-radius: 1px;
}

.landing__home-promo-benefit-text p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.84);
}

/* Featured Collection */
.landing__featured {
  padding: clamp(4rem, 8vw, 7rem) clamp(2rem, 6vw, 4rem);
  background: var(--landing-bg);
}

.landing__featured-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.landing__featured-title {
  margin: 0;
  font-size: clamp(2.5rem, 2rem + 2vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.landing__featured-link {
  color: var(--color-link);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: opacity 200ms ease;
}

.landing__featured-link:hover {
  opacity: 0.7;
}

.landing__featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

/* New Arrivals */
.landing__new {
  padding: clamp(4rem, 8vw, 7rem) clamp(2rem, 6vw, 4rem);
  background: 
    radial-gradient(circle at 70% 30%, color-mix(in srgb, var(--color-selected) 10%, transparent) 0%, transparent 50%),
    var(--landing-bg);
}

.landing__new-header {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.landing__new-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: color-mix(in srgb, var(--color-ink) 60%, transparent);
  margin-bottom: 0.75rem;
}

.landing__new-title {
  margin: 0 0 1rem;
  font-size: clamp(2.5rem, 2rem + 2vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.landing__new-description {
  margin: 0;
  font-size: clamp(1.1rem, 1rem + 0.5vw, 1.3rem);
  color: color-mix(in srgb, var(--color-ink) 70%, transparent);
  line-height: 1.6;
}

.landing__new-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: clamp(1.5rem, 3vw, 2.5rem);
  margin-bottom: 3rem;
}

.landing__new-footer {
  display: flex;
  justify-content: center;
}

/* Final CTA */
.landing__final {
  padding: clamp(5rem, 10vw, 8rem) clamp(2rem, 6vw, 4rem);
  background: 
    linear-gradient(135deg, 
      color-mix(in srgb, var(--color-selected) 12%, transparent) 0%,
      transparent 100%),
    var(--landing-bg);
  border-top: 1px solid color-mix(in srgb, var(--color-subtle-dark) 8%, transparent);
}

.landing__final-content {
  text-align: center;
}

.landing__final-title {
  margin: 0 0 1.5rem;
  font-size: clamp(2.5rem, 2rem + 2vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.landing__final-text {
  margin: 0 0 2.5rem;
  font-size: clamp(1.1rem, 1rem + 0.5vw, 1.3rem);
  color: color-mix(in srgb, var(--color-ink) 70%, transparent);
  line-height: 1.6;
}

.landing__final-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .landing__home-shelves {
    padding-top: 0;
    padding-bottom: 0;
  }

  .landing__home-actions .btn--large {
    width: 100%;
    justify-content: center;
  }

  .landing__home-promo-benefits {
    grid-template-columns: 1fr;
  }

  .landing__featured-header {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }
}