/**
 * TWI Offers — Conversion-Focused Product Card Grid
 * v1.0.0 — Pure CSS, no external dependencies or JS.
 * Targets the markup output by twi-offers PHP template.
 */

/* =========================================================================
   1. DESIGN TOKENS
   ========================================================================= */
:root {
  --twi-accent:        #0f766e;
  --twi-accent-hover:  #115e59;
  --twi-text:          #1e293b;
  --twi-text-muted:    #64748b;
  --twi-border:        #e2e8f0;
  --twi-bg:            #ffffff;
  --twi-radius:        12px;
  --twi-shadow:        0 1px 3px rgba(15,23,42,0.06), 0 4px 12px rgba(15,23,42,0.04);
  --twi-shadow-hover:  0 4px 16px rgba(15,23,42,0.10), 0 8px 32px rgba(15,23,42,0.06);
  --twi-font:          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --twi-fs-sm:         0.8125rem;
  --twi-fs-base:       0.9375rem;
  --twi-fs-lg:         1.125rem;
  --twi-fs-xl:         1.25rem;
  --twi-fs-2xl:        1.5rem;
  --twi-sp-xs:         0.375rem;
  --twi-sp-sm:         0.625rem;
  --twi-sp-md:         1rem;
  --twi-sp-lg:         1.25rem;
  --twi-sp-xl:         1.75rem;
  --twi-sp-2xl:        2.5rem;
  --twi-ease:          0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================================================
   2. SECTION LAYOUT & HEADING
   ========================================================================= */
.twi-offers {
  font-family: var(--twi-font);
  color: var(--twi-text);
  padding: var(--twi-sp-2xl) 0;
}
.twi-offers__heading {
  text-align: center;
  margin-bottom: var(--twi-sp-xl);
}
.twi-offers__title {
  font-size: var(--twi-fs-2xl);
  font-weight: 700;
  color: var(--twi-text);
  margin: 0 0 var(--twi-sp-xs);
  letter-spacing: -0.02em;
  line-height: 1.25;
}
.twi-offers__subtitle {
  font-size: var(--twi-fs-base);
  color: var(--twi-text-muted);
  margin: 0;
  line-height: 1.5;
}

/* =========================================================================
   3. RESPONSIVE GRID
   ========================================================================= */
.twi-offers__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: var(--twi-sp-xl);
}
@media (min-width: 640px) {
  .twi-offers__grid {
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  }
}
@media (min-width: 1024px) {
  .twi-offers__grid {
    grid-template-columns: repeat(
      auto-fill,
      minmax(calc((100% - (var(--twi-columns, 4) - 1) * var(--twi-sp-xl)) / var(--twi-columns, 4)), 1fr)
    );
  }
}

/* =========================================================================
   4. CARD STRUCTURE
   ========================================================================= */
.twi-offer-card {
  display: flex;
  flex-direction: column;
  background: var(--twi-bg);
  border: 1px solid var(--twi-border);
  border-radius: var(--twi-radius);
  box-shadow: var(--twi-shadow);
  overflow: hidden;
  transition: transform var(--twi-ease), box-shadow var(--twi-ease);
}
.twi-offer-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--twi-shadow-hover);
}
/* The picture sits inset from the card edge rather than bleeding to it. The
   padding is the "room" the owner asked for; the frame inside it does the
   clipping, so the hover zoom cannot grow back over that room. */
.twi-offer-card__image {
  display: block;
  box-sizing: border-box;
  padding: var(--twi-sp-sm) var(--twi-sp-sm) 0;
  line-height: 0;
}
.twi-offer-card__image-frame {
  display: block;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border-radius: calc(var(--twi-radius) - 2px);
}
.twi-offer-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--twi-ease);
}
.twi-offer-card:hover .twi-offer-card__image img {
  transform: scale(1.04);
}

/* =========================================================================
   5. CARD BODY
   ========================================================================= */
.twi-offer-card__body {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  padding: var(--twi-sp-lg) var(--twi-sp-lg) var(--twi-sp-md);
  gap: var(--twi-sp-sm);
}
.twi-offer-card__vendor {
  font-size: var(--twi-fs-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--twi-text-muted);
  line-height: 1;
}
.twi-offer-card__title {
  font-size: var(--twi-fs-lg);
  font-weight: 600;
  line-height: 1.35;
  margin: 0;
  color: var(--twi-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.twi-offer-card__title a {
  color: inherit;
  text-decoration: none;
  transition: color var(--twi-ease);
}
.twi-offer-card__title a:hover,
.twi-offer-card__title a:focus-visible {
  color: var(--twi-accent);
}
.twi-offer-card__price {
  font-size: var(--twi-fs-xl);
  font-weight: 700;
  color: var(--twi-accent);
  line-height: 1.3;
}

/* =========================================================================
   6. DESCRIPTION & READ-MORE TOGGLE
   ========================================================================= */
/* Both cards share one markup contract -- [data-twi-desc] wrapping the text
   plus [data-twi-readmore] -- so a single delegated handler serves both. */
.twi-offer-card__desc {
  position: relative;
}
.twi-offer-card__desc-text {
  font-size: var(--twi-fs-base);
  color: var(--twi-text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.twi-offer-card__desc.is-expanded .twi-offer-card__desc-text {
  -webkit-line-clamp: unset;
  overflow: visible;
}
/* Hidden until the script measures the text and finds it actually clamped.
   Without JS the toggle could not work anyway, so an always-visible button
   would just be a dead control. */
.twi-offer-card__readmore,
.twi-mystery-card__readmore {
  display: none;
}
.twi-offer-card__desc.is-clampable .twi-offer-card__readmore,
.twi-mystery-card__desc.is-clampable .twi-mystery-card__readmore {
  display: inline-flex;
}

.twi-offer-card__readmore {
  align-items: center;
  gap: 0.25em;
  margin-top: var(--twi-sp-xs);
  padding: 0;
  border: none;
  background: none;
  font-family: inherit;
  font-size: var(--twi-fs-sm);
  font-weight: 600;
  color: var(--twi-accent);
  cursor: pointer;
  line-height: 1;
  transition: color var(--twi-ease);
}
.twi-offer-card__readmore:hover,
.twi-offer-card__readmore:focus-visible {
  color: var(--twi-accent-hover);
}
.twi-offer-card__readmore:active {
  color: var(--twi-accent-hover);
}
.twi-offer-card__readmore-less,
.twi-offer-card__desc.is-expanded .twi-offer-card__readmore-more {
  display: none;
}
.twi-offer-card__desc.is-expanded .twi-offer-card__readmore-less {
  display: inline;
}

/* =========================================================================
   7. CTA BUTTON — pinned to card bottom
   ========================================================================= */
.twi-offer-card__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--twi-sp-sm);
  margin-top: auto;
  padding: 0.8125rem var(--twi-sp-lg);
  border-radius: 8px;
  background: var(--twi-accent);
  color: #ffffff;
  font-family: inherit;
  font-size: var(--twi-fs-base);
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  line-height: 1;
  transition: background var(--twi-ease), transform var(--twi-ease);
}
.twi-offer-card__cta:hover,
.twi-offer-card__cta:focus-visible {
  background: var(--twi-accent-hover);
  color: #ffffff;
}
.twi-offer-card__cta:active {
  transform: scale(0.98);
  color: #ffffff;
}
.twi-offer-card__cta-arrow {
  display: inline-block;
  font-size: 1.15em;
  transition: transform var(--twi-ease);
}
.twi-offer-card__cta:hover .twi-offer-card__cta-arrow {
  transform: translateX(3px);
}

/* =========================================================================
   8. FOCUS STATES
   ========================================================================= */
.twi-offer-card__title a:focus-visible,
.twi-offer-card__readmore:focus-visible,
.twi-offer-card__cta:focus-visible {
  outline: 2px solid var(--twi-accent);
  outline-offset: 2px;
  border-radius: 4px;
}
.twi-offer-card__cta:focus-visible {
  outline-color: #ffffff;
  outline-offset: 3px;
  box-shadow: 0 0 0 3px var(--twi-accent);
}

/* =========================================================================
   9. REDUCED MOTION
   ========================================================================= */
@media (prefers-reduced-motion: reduce) {
  .twi-offer-card,
  .twi-offer-card__image img,
  .twi-offer-card__title a,
  .twi-offer-card__readmore,
  .twi-offer-card__cta,
  .twi-offer-card__cta-arrow {
    transition: none !important;
  }
  .twi-offer-card:hover,
  .twi-offer-card:hover .twi-offer-card__image img,
  .twi-offer-card__cta:hover .twi-offer-card__cta-arrow {
    transform: none;
  }
}

/* =========================================================================
   10. MYSTERY CARDS (funnel teasers)

   Deliberately shares the product-card design language above — same tokens,
   grid, shadow and CTA — because a teaser has to look like a real offer to
   earn the click. The only visual difference is the concealed artwork and
   the "?" badge; nothing here may reveal product identity.
   ========================================================================= */
.twi-mystery-grid {
  font-family: var(--twi-font);
  color: var(--twi-text);
  padding: var(--twi-sp-2xl) 0;
}
.twi-mystery-grid__inner {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: var(--twi-sp-xl);
}
@media (min-width: 640px) {
  .twi-mystery-grid__inner {
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  }
}
/* The configured column count is an upper bound, not a quota. Without the
   floor below, auto-fill still builds --twi-columns tracks even when there
   is only one funnel to show, squeezing a lone card into a quarter of the
   row. Flooring the track width drops the column count instead, so a single
   teaser stays a readable card. */
@media (min-width: 1024px) {
  .twi-mystery-grid__inner {
    grid-template-columns: repeat(
      auto-fill,
      minmax(
        max(
          260px,
          calc((100% - (var(--twi-columns, 4) - 1) * var(--twi-sp-xl)) / var(--twi-columns, 4))
        ),
        1fr
      )
    );
  }
}

.twi-mystery-card {
  display: flex;
  flex-direction: column;
  background: var(--twi-bg);
  border: 1px solid var(--twi-border);
  border-radius: var(--twi-radius);
  box-shadow: var(--twi-shadow);
  overflow: hidden;
  transition: transform var(--twi-ease), box-shadow var(--twi-ease);
}
.twi-mystery-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--twi-shadow-hover);
}

/* Artwork — fixed ratio so one card can never blow up to full height. */
.twi-mystery-card__artwork {
  position: relative;
  display: block;
  box-sizing: border-box;
  padding: var(--twi-sp-sm) var(--twi-sp-sm) 0;
  line-height: 0;
}
.twi-mystery-card__artwork-frame {
  display: block;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border-radius: calc(var(--twi-radius) - 2px);
  background: #1e1b4b;
}
.twi-mystery-card__artwork img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--twi-ease);
}
.twi-mystery-card:hover .twi-mystery-card__artwork img {
  transform: scale(1.04);
}
.twi-mystery-card__badge {
  position: absolute;
  /* Offsets are measured from the artwork box, which now carries the inset
     padding, so add to them to keep the badge inside the frame. */
  top: calc(var(--twi-sp-sm) + var(--twi-sp-xs));
  right: calc(var(--twi-sp-sm) + var(--twi-sp-xs));
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  color: var(--twi-text);
  font-size: var(--twi-fs-lg);
  font-weight: 700;
  line-height: 1;
}

/* Provider attribution. Small and unobtrusive, but visible and linked, as the
   stock provider's API guidelines require. */
.twi-mystery-card__credit {
  position: absolute;
  /* Matches the artwork padding so the gradient ends with the frame instead of
     spilling across the inset and out of the rounded corners. */
  left: var(--twi-sp-sm);
  right: var(--twi-sp-sm);
  bottom: 0;
  border-bottom-left-radius: calc(var(--twi-radius) - 2px);
  border-bottom-right-radius: calc(var(--twi-radius) - 2px);
  padding: 4px 8px;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.62), transparent);
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.6875rem;
  line-height: 1.3;
  text-align: right;
}
.twi-mystery-card__desc {
  position: relative;
}
/* The teaser was already clamped further down; this only gives the reader a
   way back out of it. Before the toggle existed the clamp simply cut the copy
   off with nothing to click. */
.twi-mystery-card__desc.is-expanded .twi-mystery-card__teaser {
  -webkit-line-clamp: unset;
  overflow: visible;
}
.twi-mystery-card__readmore {
  align-items: center;
  gap: 0.25em;
  margin-top: var(--twi-sp-xs);
  padding: 0;
  border: none;
  background: none;
  font-family: inherit;
  font-size: var(--twi-fs-sm);
  font-weight: 600;
  color: var(--twi-accent);
  cursor: pointer;
  line-height: 1;
  transition: color var(--twi-ease);
}
.twi-mystery-card__readmore:hover,
.twi-mystery-card__readmore:focus-visible {
  color: var(--twi-accent-hover);
}
.twi-mystery-card__readmore-less,
.twi-mystery-card__desc.is-expanded .twi-mystery-card__readmore-more {
  display: none;
}
.twi-mystery-card__desc.is-expanded .twi-mystery-card__readmore-less {
  display: inline;
}

.twi-mystery-card__credit a {
  color: inherit;
  text-decoration: underline;
}

.twi-mystery-card__body {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  padding: var(--twi-sp-lg) var(--twi-sp-lg) var(--twi-sp-md);
  gap: var(--twi-sp-sm);
}
.twi-mystery-card__category {
  font-size: var(--twi-fs-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--twi-text-muted);
  line-height: 1;
}
.twi-mystery-card__title {
  font-size: var(--twi-fs-lg);
  font-weight: 600;
  line-height: 1.35;
  margin: 0;
  color: var(--twi-text);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.twi-mystery-card__teaser {
  font-size: var(--twi-fs-base);
  color: var(--twi-text-muted);
  line-height: 1.6;
  margin: 0;
  display: -webkit-box;
  /* Three, not four. At four a typical teaser hid a single line, so Read More
     opened onto almost nothing and read as a broken control. */
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.twi-mystery-card__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--twi-sp-sm);
  margin-top: auto;
  padding: 0.8125rem var(--twi-sp-lg);
  border: 0;
  border-radius: 8px;
  background: var(--twi-accent);
  color: #ffffff;
  font-family: inherit;
  font-size: var(--twi-fs-base);
  font-weight: 600;
  line-height: 1;
  text-align: center;
  cursor: pointer;
  transition: background var(--twi-ease), transform var(--twi-ease);
}
.twi-mystery-card__cta:hover,
.twi-mystery-card__cta:focus-visible {
  background: var(--twi-accent-hover);
  color: #ffffff;
}
.twi-mystery-card__cta:active {
  transform: scale(0.98);
}
.twi-mystery-card__cta-arrow {
  display: inline-block;
  font-size: 1.15em;
  transition: transform var(--twi-ease);
}
.twi-mystery-card__cta:hover .twi-mystery-card__cta-arrow {
  transform: translateX(3px);
}

@media (prefers-reduced-motion: reduce) {
  .twi-mystery-card,
  .twi-mystery-card__artwork img,
  .twi-mystery-card__cta,
  .twi-mystery-card__cta-arrow {
    transition: none;
  }
  .twi-mystery-card:hover {
    transform: none;
  }
  .twi-mystery-card:hover .twi-mystery-card__artwork img,
  .twi-mystery-card__cta:hover .twi-mystery-card__cta-arrow {
    transform: none;
  }
}

/* ── Gift grid (phase 7) ──────────────────────────────────────────
   Same tokens and grid mechanics as the mystery grid above -- one
   design system, two card shapes. No line-clamp/read-more rules here:
   the gift card carries no long teaser copy to clamp (§5's "server-side
   length guesses" trap does not apply to a card with nothing measured). */

.twi-gift-grid {
  font-family: var(--twi-font);
  color: var(--twi-text);
  padding: var(--twi-sp-2xl) 0;
}
.twi-gift-grid__inner {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: var(--twi-sp-xl);
}
@media (min-width: 640px) {
  .twi-gift-grid__inner {
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  }
}
@media (min-width: 1024px) {
  .twi-gift-grid__inner {
    grid-template-columns: repeat(
      auto-fill,
      minmax(
        max(
          260px,
          calc((100% - (var(--twi-columns, 3) - 1) * var(--twi-sp-xl)) / var(--twi-columns, 3))
        ),
        1fr
      )
    );
  }
}

.twi-gift-card {
  display: flex;
  flex-direction: column;
  background: var(--twi-bg);
  border: 1px solid var(--twi-border);
  border-radius: var(--twi-radius);
  box-shadow: var(--twi-shadow);
  overflow: hidden;
}

.twi-gift-card__artwork {
  position: relative;
  display: block;
  box-sizing: border-box;
  padding: var(--twi-sp-sm) var(--twi-sp-sm) 0;
  line-height: 0;
}
.twi-gift-card__artwork-frame {
  display: block;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border-radius: calc(var(--twi-radius) - 2px);
  background: #1e1b4b;
}
.twi-gift-card__artwork img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Provider attribution. Small and unobtrusive, but visible and linked, as
   the stock provider's API guidelines require -- same shape as the mystery
   card's own credit line. */
.twi-gift-card__credit {
  position: absolute;
  left: var(--twi-sp-sm);
  right: var(--twi-sp-sm);
  bottom: 0;
  border-bottom-left-radius: calc(var(--twi-radius) - 2px);
  border-bottom-right-radius: calc(var(--twi-radius) - 2px);
  padding: 4px 8px;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.62), transparent);
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.6875rem;
  line-height: 1.3;
  text-align: right;
}
.twi-gift-card__credit a {
  color: inherit;
  text-decoration: underline;
}

.twi-gift-card__body {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  padding: var(--twi-sp-lg) var(--twi-sp-lg) var(--twi-sp-md);
  gap: var(--twi-sp-sm);
}
.twi-gift-card__title {
  font-size: var(--twi-fs-lg);
  font-weight: 600;
  line-height: 1.35;
  margin: 0;
  color: var(--twi-text);
}
.twi-gift-card__subtitle {
  font-size: var(--twi-fs-base);
  color: var(--twi-text-muted);
  line-height: 1.5;
  margin: 0;
}

.twi-gift-card__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--twi-sp-sm);
  margin-top: auto;
  padding: 0.8125rem var(--twi-sp-lg);
  border: 0;
  border-radius: 8px;
  background: var(--twi-accent);
  color: #ffffff;
  font-family: inherit;
  font-size: var(--twi-fs-base);
  font-weight: 600;
  line-height: 1;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--twi-ease), transform var(--twi-ease);
}
.twi-gift-card__cta:hover,
.twi-gift-card__cta:focus-visible {
  background: var(--twi-accent-hover);
  color: #ffffff;
}
.twi-gift-card__cta:active {
  transform: scale(0.98);
}
.twi-gift-card__cta-arrow {
  display: inline-block;
  font-size: 1.15em;
  transition: transform var(--twi-ease);
}
.twi-gift-card__cta:hover .twi-gift-card__cta-arrow {
  transform: translateX(3px);
}

@media (prefers-reduced-motion: reduce) {
  .twi-gift-card__cta,
  .twi-gift-card__cta-arrow {
    transition: none;
  }
  .twi-gift-card__cta:hover .twi-gift-card__cta-arrow {
    transform: none;
  }
}