/* ==========================================================================
   Hobby Artistry – Gallery styles
   Theme: maroon accent on warm neutral background
   ========================================================================== */

:root {
  --maroon: #7a1f2b;
  --maroon-dark: #5c161f;
  --maroon-soft: #f4e4e6;
  --gold: #c9a24a;
  --cream: #fbf7f2;
  --surface: #ffffff;
  --ink: #2b1d1f;
  --ink-muted: #6b5a5d;
  --border: #e6d9d4;
  --radius: 14px;
  --shadow: 0 6px 20px rgba(60, 20, 25, 0.08);
  --focus: 0 0 0 3px #fff, 0 0 0 6px var(--maroon);
  --card-w: min(82vw, 320px);
  --transition: 180ms ease;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", "Palatino Linotype", serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.5;
  overflow-x: hidden; /* FR-013: no page-level horizontal overflow */
}

body.is-locked { overflow: hidden; }

img { display: block; max-width: 100%; }

button {
  font: inherit;
  cursor: pointer;
}

:focus-visible { outline: none; box-shadow: var(--focus); }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100%;
  background: var(--maroon);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 0 0 8px 8px;
  z-index: 200;
  text-decoration: none;
}
.skip-link:focus { top: 0; }

/* ---------- Header ---------- */

.site-header {
  background: var(--surface);
  border-bottom: 4px solid var(--maroon);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 50;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 2.5rem) 0.6rem;
  max-width: 1400px;
  margin: 0 auto;
}

.brand__logo {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--gold);
  flex-shrink: 0;
}

.brand__title {
  margin: 0;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  color: var(--maroon);
  letter-spacing: 0.02em;
  line-height: 1.1;
}

.brand__tagline {
  margin: 0.2rem 0 0;
  color: var(--ink-muted);
  font-size: clamp(0.85rem, 2.2vw, 1rem);
}

/* ---------- Instagram button + popup ---------- */

.social-btn {
  margin-left: auto;
  align-self: flex-start;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 0;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, #f58529 0%, #dd2a7b 50%, #8134af 100%);
  box-shadow: 0 4px 12px rgba(221, 42, 123, 0.3);
  transition: transform var(--transition), box-shadow var(--transition);
}
.social-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(221, 42, 123, 0.4); }
.social-btn__icon { width: 24px; height: 24px; }

.popup {
  position: fixed;
  inset: 0;
  z-index: 110;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(43, 29, 31, 0.6);
  backdrop-filter: blur(3px);
}
.popup[hidden] { display: none; }

.popup__card {
  position: relative;
  width: min(100%, 360px);
  background: var(--surface);
  border-radius: 20px;
  padding: 2rem 1.5rem 1.5rem;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  border-top: 5px solid transparent;
  background-image: linear-gradient(var(--surface), var(--surface)),
                    linear-gradient(90deg, #f58529, #dd2a7b, #8134af);
  background-origin: border-box;
  background-clip: padding-box, border-box;
}

.popup__close {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 0;
  background: var(--maroon-soft);
  color: var(--maroon-dark);
  font-size: 1rem;
  display: grid;
  place-items: center;
}
.popup__close:hover { background: var(--maroon); color: #fff; }

.popup__title {
  margin: 0 2rem 0.3rem;
  color: var(--maroon);
  font-size: 1.35rem;
}
.popup__text {
  margin: 0 0 1rem;
  color: var(--ink-muted);
  font-size: 0.92rem;
}
.popup__qr {
  width: min(100%, 240px);
  height: auto;
  aspect-ratio: 1;
  margin: 0 auto 1rem;
  border-radius: 14px;
  border: 1px solid var(--border);
}
.popup__handle {
  display: inline-block;
  padding: 0.6rem 1.3rem;
  min-height: 44px;
  border-radius: 999px;
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  background: linear-gradient(135deg, #f58529 0%, #dd2a7b 50%, #8134af 100%);
  box-shadow: 0 4px 12px rgba(221, 42, 123, 0.3);
}
.popup__handle:hover { filter: brightness(1.08); }
.popup__url {
  margin: 0.6rem 0 0;
  color: var(--ink-muted);
  font-size: 0.85rem;
  word-break: break-all;
}

.category-nav {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2.5rem) 0.8rem;
}

.category-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: none;
}
.category-nav__list::-webkit-scrollbar { display: none; }

.category-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  white-space: nowrap;
  padding: 0.5rem 0.9rem;
  min-height: 44px;
  border-radius: 999px;
  background: var(--maroon-soft);
  color: var(--maroon-dark);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background var(--transition), color var(--transition);
}
.category-nav__link:hover { background: var(--maroon); color: #fff; }

.category-nav__count {
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.7);
  color: var(--maroon-dark);
  border-radius: 999px;
  padding: 0.05rem 0.5rem;
}
.category-nav__link:hover .category-nav__count { background: rgba(255, 255, 255, 0.25); color: #fff; }

/* ---------- Main / sections ---------- */

.site-main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem clamp(1rem, 4vw, 2.5rem) 3rem;
}
.site-main:focus { outline: none; }

.notice {
  background: var(--maroon-soft);
  border-left: 4px solid var(--maroon);
  padding: 1rem;
  border-radius: 8px;
}

.collection {
  margin-bottom: 3rem;
  scroll-margin-top: 170px; /* keeps heading visible under sticky header */
}

.collection__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.25rem;
}

.collection__title {
  margin: 0;
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  color: var(--maroon);
}

.collection__title::after {
  content: "";
  display: block;
  width: 56px;
  height: 3px;
  margin-top: 0.3rem;
  background: linear-gradient(90deg, var(--maroon), var(--gold));
  border-radius: 2px;
}

.collection__count {
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.collection__description {
  margin: 0.5rem 0 1rem;
  color: var(--ink-muted);
  max-width: 65ch;
}

.collection__empty {
  color: var(--ink-muted);
  font-style: italic;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

/* ---------- Carousel ---------- */

.carousel {
  position: relative;
}

.carousel__track {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding: 0.5rem 0 1rem;
  scrollbar-width: thin;
  scrollbar-color: var(--maroon) transparent;
}

.carousel__track::-webkit-scrollbar { height: 6px; }
.carousel__track::-webkit-scrollbar-thumb { background: var(--maroon); border-radius: 3px; }

.card {
  flex: 0 0 var(--card-w);
  scroll-snap-align: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover { transform: translateY(-3px); box-shadow: 0 10px 26px rgba(60, 20, 25, 0.14); }

.card__button {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto; /* fill the card so equal-height siblings don't leave a gap */
  width: 100%;
  padding: 0;
  margin: 0;
  border: 0;
  background: var(--maroon-soft);
  text-align: left;
  color: inherit;
}

.card__button:focus-visible { box-shadow: inset var(--focus); }

.card__frame {
  aspect-ratio: 4 / 3; /* NFR-003: reserve space to avoid layout shift; matches mostly-landscape artwork */
  width: 100%;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}

.card__image {
  position: absolute; /* keeps portrait images from growing the frame */
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain; /* FR-005: never stretch */
  padding: 0.5rem;
}

.card__fallback {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: var(--ink-muted);
  font-size: 0.9rem;
  text-align: center;
  padding: 1rem;
}
.card__fallback::before {
  content: "🖼" / "";
  font-size: 2rem;
  filter: grayscale(1);
  opacity: 0.6;
}

.card.is-broken .card__image { display: none; }
.card.is-broken .card__fallback { display: flex; }

.card__caption {
  margin: 0;
  flex: 1 1 auto;
  width: 100%;
  padding: 0.75rem 0.9rem 0.9rem;
  font-size: 0.95rem;
  color: var(--ink);
  border-top: 1px solid var(--border);
}

.carousel__control {
  position: absolute;
  top: 40%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 0;
  background: var(--maroon);
  color: #fff;
  font-size: 1.5rem;
  line-height: 1;
  display: grid;
  place-items: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  z-index: 2;
  transition: opacity var(--transition), background var(--transition);
}
.carousel__control:hover:not(:disabled) { background: var(--maroon-dark); }
.carousel__control:disabled { opacity: 0.3; cursor: not-allowed; }
.carousel__control--prev { left: -8px; }
.carousel__control--next { right: -8px; }

@media (min-width: 1024px) {
  .carousel__control--prev { left: -22px; }
  .carousel__control--next { right: -22px; }
}

/* Responsive card widths (section 7.2) */
@media (min-width: 480px)  { :root { --card-w: 260px; } }
@media (min-width: 768px)  { :root { --card-w: 280px; } }
@media (min-width: 1024px) { :root { --card-w: 300px; } }
@media (min-width: 1440px) { :root { --card-w: 320px; } }

/* ---------- Footer ---------- */

.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 1.5rem 1rem;
  color: var(--ink-muted);
  font-size: 0.9rem;
}
.site-footer__logo {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 0.5rem;
  opacity: 0.9;
}
.site-footer p { margin: 0; }
.site-footer__meta { margin-top: 0.4rem !important; font-size: 0.8rem; }
.site-footer__meta a { color: var(--maroon); }

/* ---------- Lightbox ---------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(14, 6, 8, 0.94);
  display: grid;
  grid-template-rows: auto 1fr auto;
  grid-template-columns: 1fr;
  color: #fff;
}
.lightbox[hidden] { display: none; }

.lightbox__toolbar {
  grid-row: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.6rem 0.8rem;
  background: rgba(0, 0, 0, 0.45);
  z-index: 2;
}

.lightbox__counter { font-size: 0.9rem; opacity: 0.85; min-width: 4ch; }

.lightbox__zoom-controls {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.lightbox__zoom-level {
  min-width: 4.5ch;
  text-align: center;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}

.lb-btn {
  min-width: 44px;
  min-height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 1.35rem;
  line-height: 1;
  display: grid;
  place-items: center;
  transition: background var(--transition);
}
.lb-btn:hover:not(:disabled) { background: var(--maroon); }
.lb-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.lb-btn:focus-visible { box-shadow: 0 0 0 3px #000, 0 0 0 6px var(--gold); }
.lb-btn--text { font-size: 0.9rem; padding: 0 0.8rem; }
.lb-btn--close { font-size: 1.1rem; }

.lb-btn--nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 64px;
  font-size: 2.2rem;
  border-radius: 10px;
  z-index: 2;
}
.lb-btn--prev { left: 0.5rem; }
.lb-btn--next { right: 0.5rem; }

.lightbox__stage {
  grid-row: 2;
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  touch-action: none; /* we manage pan/pinch gestures ourselves */
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
}
.lightbox__stage.is-dragging { cursor: grabbing; }

.lightbox__image {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  transform-origin: center center;
  will-change: transform;
  transition: transform 120ms ease-out;
}
.lightbox__stage.is-dragging .lightbox__image,
.lightbox__stage.is-pinching .lightbox__image { transition: none; }

.lightbox__error {
  position: absolute;
  inset: auto 1rem;
  text-align: center;
  color: #f3d9dc;
}

.lightbox__caption {
  grid-row: 3;
  margin: 0;
  padding: 0.75rem 4rem 1rem;
  text-align: center;
  font-size: 1rem;
  background: rgba(0, 0, 0, 0.45);
  min-height: 2.5rem;
}

@media (orientation: landscape) and (max-height: 500px) {
  .lightbox__caption { padding-block: 0.4rem; font-size: 0.9rem; }
  .lightbox__toolbar { padding-block: 0.3rem; }
  .lb-btn--nav { height: 48px; }
}

/* ---------- Reduced motion (NFR-015) ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  .card:hover { transform: none; }
  .carousel__track { scroll-behavior: auto; }
}