/* ==========================================================================
   Art Gallery Styles (Light / Warm Beige Craft Aesthetic)
   ========================================================================== */

:root {
  /* Теплая светлая палитра (скетчбук / крафт) */
  --art-bg: #F7F5F0;             /* Мягкий бежевый / слоновая кость */
  --art-surface: #FFFFFF;        /* Чистый молочный для карточек */
  --art-surface-card: #FAF8F5;   /* Легкий крафтовый оттенок */
  --art-surface-hover: #F0EBE1;  /* Тёплый ховер */
  --art-border: #E5E0D5;         /* Мягкая бежево-песочная граница */
  --art-border-hover: #D4CCBC;   /* Контрастная граница при наведении */
  --art-text: #2C2A29;           /* Мягкий тёмно-серый / графит */
  --art-text-muted: #7A756D;     /* Приглушенный тёплый текст */
  --art-accent: #9A5B32;         /* Тёплый терракот / охра скетчбука */
  --art-accent-hover: #7E4622;   /* Насыщенный терракот */
  --art-accent-soft: rgba(154, 91, 50, 0.12);
  --art-radius: 14px;
  --art-radius-sm: 8px;
  --art-shadow: 0 4px 20px -2px rgba(44, 42, 41, 0.06), 0 2px 6px -1px rgba(44, 42, 41, 0.04);
  --art-shadow-hover: 0 10px 25px -3px rgba(44, 42, 41, 0.1), 0 4px 10px -2px rgba(44, 42, 41, 0.05);
  --art-shadow-floating: 0 12px 36px -4px rgba(44, 42, 41, 0.14), 0 4px 12px -2px rgba(44, 42, 41, 0.06);
  --art-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* Glassmorphism */
  --art-glass-bg: rgba(255, 255, 255, 0.82);
  --art-glass-border: rgba(229, 224, 213, 0.88);
  --art-lightbox-overlay: rgba(247, 245, 240, 0.88);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body.art-body {
  background-color: var(--art-bg);
  color: var(--art-text);
  font-family: var(--art-font);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Шапка */
.art-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(247, 245, 240, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--art-border);
}

.art-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.art-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.art-brand-icon {
  font-size: 1.5rem;
}

.art-brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--art-text);
}

/* Переключатель вида (Лента / Сетка) */
.art-view-nav {
  display: flex;
  background-color: #ECE7DD;
  border: 1px solid var(--art-border);
  border-radius: 9999px;
  padding: 3px;
  gap: 2px;
}

.art-view-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.95rem;
  border: none;
  border-radius: 9999px;
  background: transparent;
  color: var(--art-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.art-view-btn:hover {
  color: var(--art-text);
}

.art-view-btn.active {
  background-color: var(--art-accent);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(154, 91, 50, 0.35);
}

/* Основной контейнер */
.art-main {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.art-hidden {
  display: none !important;
}

/* --------------------------------------------------------------------------
   1. Режим «Лента»
   -------------------------------------------------------------------------- */
.art-feed-container {
  max-width: 750px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.art-feed-card {
  background-color: var(--art-surface);
  border: 1px solid var(--art-border);
  border-radius: var(--art-radius);
  overflow: hidden;
  box-shadow: var(--art-shadow);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.art-feed-card:hover {
  border-color: var(--art-border-hover);
  box-shadow: var(--art-shadow-hover);
}

.art-feed-header {
  padding: 1.25rem 1.5rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.art-feed-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--art-text);
  line-height: 1.35;
}

.art-feed-date {
  font-size: 0.825rem;
  color: var(--art-text-muted);
}

/* Картинка / медиа в ленте */
.art-feed-media-container {
  width: 100%;
  background-color: #EFEBE2;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  overflow: hidden;
}

.art-feed-single-img {
  width: 100%;
  height: auto;
  max-height: 850px;
  object-fit: contain;
  display: block;
  transition: opacity 0.2s ease;
}

/* Горизонтальный скролл для серий изображений в ленте */
.art-feed-series-scroll {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding: 0.75rem 1rem;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: #D3CBBD transparent;
}

.art-feed-series-scroll::-webkit-scrollbar {
  height: 6px;
}

.art-feed-series-scroll::-webkit-scrollbar-thumb {
  background-color: #D3CBBD;
  border-radius: 4px;
}

.art-feed-series-item {
  flex: 0 0 auto;
  scroll-snap-align: center;
  position: relative;
  height: 380px;
  max-width: 90%;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--art-border);
  background-color: #EFEBE2;
}

.art-feed-series-img {
  height: 100%;
  width: auto;
  object-fit: contain;
  display: block;
  background-color: #EFEBE2;
}

.art-feed-body {
  padding: 1.25rem 1.5rem 1.5rem;
}

.art-feed-text {
  font-size: 0.95rem;
  color: #4A4643;
  white-space: pre-line;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   2. Режим «Сетка»
   -------------------------------------------------------------------------- */
.art-grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}

.art-grid-item {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--art-radius);
  overflow: hidden;
  background-color: var(--art-surface);
  border: 1px solid var(--art-border);
  cursor: pointer;
  box-shadow: var(--art-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.art-grid-item:hover {
  transform: translateY(-3px);
  border-color: var(--art-accent);
  box-shadow: var(--art-shadow-hover);
}

.art-grid-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.art-grid-item:hover .art-grid-thumb {
  transform: scale(1.04);
}

/* Бейдж количества фото в серии */
.art-grid-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background-color: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--art-text);
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  border: 1px solid var(--art-glass-border);
  box-shadow: 0 2px 8px rgba(44, 42, 41, 0.08);
}

/* Оверлей названия в сетке при наведении */
.art-grid-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem 1rem 0.75rem;
  background: linear-gradient(to top, rgba(44, 42, 41, 0.88) 0%, rgba(44, 42, 41, 0.35) 60%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.art-grid-item:hover .art-grid-overlay {
  opacity: 1;
}

.art-grid-overlay-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: #FFFFFF;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --------------------------------------------------------------------------
   3. Бесконечный скролл (Сентинель / Спиннер)
   -------------------------------------------------------------------------- */
.art-sentinel {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2.5rem 0;
  min-height: 60px;
}

.art-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid #E2DCCF;
  border-top-color: var(--art-accent);
  border-radius: 50%;
  animation: art-spin 0.8s linear infinite;
}

@keyframes art-spin {
  to { transform: rotate(360deg); }
}

.art-empty-msg {
  color: var(--art-text-muted);
  font-size: 1rem;
}

/* --------------------------------------------------------------------------
   4. Лайтбокс (Полноэкранный просмотр Light / Warm Beige)
   -------------------------------------------------------------------------- */
.art-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: env(safe-area-inset-top, 0px) env(safe-area-inset-right, 0px) env(safe-area-inset-bottom, 0px) env(safe-area-inset-left, 0px);
  overflow: hidden;
}

.art-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background-color: var(--art-lightbox-overlay);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 1000;
}

/* Верхняя панель: счетчик и кнопка закрытия */
.art-lightbox-topbar {
  position: absolute;
  top: max(16px, env(safe-area-inset-top, 16px));
  left: max(16px, env(safe-area-inset-left, 16px));
  right: max(16px, env(safe-area-inset-right, 16px));
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 1020;
  pointer-events: none;
}

.art-lightbox-counter {
  pointer-events: auto;
  background: var(--art-glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--art-text);
  padding: 0.35rem 0.8rem;
  border-radius: 9999px;
  font-size: 0.825rem;
  font-weight: 600;
  border: 1px solid var(--art-glass-border);
  box-shadow: var(--art-shadow);
  user-select: none;
}

.art-lightbox-close {
  pointer-events: auto;
  width: 46px;
  height: 46px;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--art-glass-border);
  border-radius: 50%;
  background: var(--art-glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--art-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--art-shadow);
  transition: all 0.2s ease;
}

.art-lightbox-close:hover {
  background-color: var(--art-surface);
  color: var(--art-accent);
  border-color: var(--art-border-hover);
  transform: scale(1.05);
}

/* Сцена: Картинка на весь экран без жестких карточных рамок */
.art-lightbox-stage {
  position: absolute;
  inset: 0;
  z-index: 1005;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4.5rem 1.5rem 6.5rem;
  user-select: none;
  overflow: hidden;
}

.art-lightbox-img {
  max-width: min(94vw, 1400px);
  max-height: 84vh;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
  border-radius: 6px;
  box-shadow: var(--art-shadow-floating);
  pointer-events: auto;
  transition: opacity 0.2s ease;
}

/* Стрелки навигации поверх изображения по бокам экрана */
.art-lightbox-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--art-glass-border);
  border-radius: 50%;
  background: var(--art-glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--art-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1020;
  box-shadow: var(--art-shadow);
  transition: all 0.2s ease;
}

.art-lightbox-arrow:hover {
  background-color: var(--art-surface);
  color: var(--art-accent);
  border-color: var(--art-border-hover);
  transform: translateY(-50%) scale(1.06);
}

.art-lightbox-prev {
  left: max(16px, env(safe-area-inset-left, 16px));
}

.art-lightbox-next {
  right: max(16px, env(safe-area-inset-right, 16px));
}

/* Нижняя зона: серия миниатюр и плавающий информационный блок */
.art-lightbox-bottom-zone {
  position: absolute;
  bottom: max(16px, env(safe-area-inset-bottom, 16px));
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  z-index: 1020;
  pointer-events: none;
  padding: 0 1.25rem;
}

/* Миниатюры серии в лайтбоксе */
.art-lightbox-thumbs {
  pointer-events: auto;
  display: flex;
  gap: 0.5rem;
  padding: 0.4rem 0.6rem;
  background: var(--art-glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--art-glass-border);
  border-radius: 12px;
  overflow-x: auto;
  max-width: 90vw;
  box-shadow: var(--art-shadow);
  scrollbar-width: none;
}

.art-lightbox-thumbs::-webkit-scrollbar {
  display: none;
}

.art-lightbox-thumb-btn {
  width: 46px;
  height: 46px;
  border-radius: 7px;
  overflow: hidden;
  border: 2px solid transparent;
  background: #EAE5DB;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  opacity: 0.65;
  transition: opacity 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.art-lightbox-thumb-btn.active,
.art-lightbox-thumb-btn:hover {
  opacity: 1;
  border-color: var(--art-accent);
  transform: scale(1.04);
}

.art-lightbox-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Свернутая плавающая плашка-кнопка (Pill) */
.art-lightbox-info-pill-btn {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  background: var(--art-glass-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--art-glass-border);
  border-radius: 9999px;
  color: var(--art-text);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  box-shadow: var(--art-shadow);
  transition: all 0.2s ease;
  max-width: min(85vw, 360px);
}

.art-lightbox-info-pill-btn:hover {
  background-color: var(--art-surface);
  border-color: var(--art-border-hover);
  color: var(--art-accent);
  transform: translateY(-2px);
}

.art-lightbox-info-pill-title {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Информационная плашка (название, дата, описание) */
.art-lightbox-info {
  pointer-events: auto;
  width: 100%;
  max-width: 680px;
  background: var(--art-glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--art-glass-border);
  border-radius: var(--art-radius);
  padding: 1.1rem 1.4rem;
  box-shadow: var(--art-shadow-floating);
  max-height: 28vh;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: #D3CBBD transparent;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
}

.art-lightbox-info::-webkit-scrollbar {
  width: 5px;
}

.art-lightbox-info::-webkit-scrollbar-thumb {
  background-color: #D3CBBD;
  border-radius: 4px;
}

.art-lightbox-info-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.4rem;
}

.art-lightbox-meta {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  flex: 1;
  min-width: 0;
}

.art-lightbox-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--art-text);
  line-height: 1.3;
}

.art-lightbox-date {
  font-size: 0.8rem;
  color: var(--art-text-muted);
}

.art-lightbox-info-toggle-btn {
  background: transparent;
  border: none;
  color: var(--art-text-muted);
  width: 32px;
  height: 32px;
  min-width: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.art-lightbox-info-toggle-btn:hover {
  color: var(--art-text);
  background-color: rgba(44, 42, 41, 0.06);
}

.art-lightbox-text {
  font-size: 0.9rem;
  color: #4A4643;
  line-height: 1.55;
  white-space: pre-line;
}

/* --------------------------------------------------------------------------
   5. Адаптивность
   -------------------------------------------------------------------------- */
@media (max-width: 640px) {
  .art-header-inner {
    padding: 0.75rem 1rem;
  }
  .art-main {
    padding: 1.25rem 0.85rem;
  }
  .art-feed-container {
    gap: 1.75rem;
  }
  .art-feed-header {
    padding: 1rem 1.15rem 0.6rem;
  }
  .art-feed-body {
    padding: 1rem 1.15rem 1.25rem;
  }
  .art-feed-series-item {
    height: 260px;
  }
  .art-grid-container {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }
  .art-lightbox-stage {
    padding: 4rem 0.75rem 5.5rem;
  }
  .art-lightbox-img {
    max-width: 96vw;
    max-height: 78vh;
  }
  .art-lightbox-arrow {
    width: 44px;
    height: 44px;
  }
  .art-lightbox-prev {
    left: max(10px, env(safe-area-inset-left, 10px));
  }
  .art-lightbox-next {
    right: max(10px, env(safe-area-inset-right, 10px));
  }
  .art-lightbox-bottom-zone {
    bottom: max(12px, env(safe-area-inset-bottom, 12px));
    padding: 0 0.75rem;
  }
  .art-lightbox-info {
    padding: 0.9rem 1.1rem;
    max-height: 32vh;
  }
  .art-lightbox-title {
    font-size: 1.05rem;
  }
}

@media (max-height: 700px) {
  .art-lightbox-stage {
    padding: 3.5rem 1rem 4.5rem;
  }
  .art-lightbox-img {
    max-height: 72vh;
  }
  .art-lightbox-info {
    max-height: 24vh;
    padding: 0.75rem 1rem;
  }
}