/* ==========================================================================
   Piwigo Integration – Stylesheet
   ========================================================================== */

/* ── CSS Custom Properties ─────────────────────────────────────────────── */
:root {
  --piw-accent:        #3b82f6;
  --piw-accent-dark:   #1d4ed8;
  --piw-bg:            #f8fafc;
  --piw-surface:       #ffffff;
  --piw-border:        #e2e8f0;
  --piw-text:          #1e293b;
  --piw-text-muted:    #64748b;
  --piw-shadow:        0 2px 8px rgba(0,0,0,.08);
  --piw-shadow-lg:     0 8px 32px rgba(0,0,0,.18);
  --piw-radius:        10px;
  --piw-radius-sm:     6px;
  --piw-transition:    0.2s ease;
  --piw-sidebar-width: 260px;
}

/* ── General Page Layout ───────────────────────────────────────────────── */
.piwigo-gallery-page,
.piwigo-updates-page {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
  font-family: inherit;
  color: var(--piw-text);
}

.piwigo-page-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0 0 1rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .5rem;
}

.piwigo-icon { font-size: 1.5rem; }

.piwigo-breadcrumb-link {
  color: var(--piw-text);
  text-decoration: none;
  transition: color var(--piw-transition);
}

.piwigo-breadcrumb-link:hover {
  color: var(--piw-accent);
}

.piwigo-breadcrumb-sep {
  color: var(--piw-text-muted);
  font-weight: 400;
  margin: 0 .2rem;
}

.piwigo-album-description {
  color: var(--piw-text-muted);
  margin-bottom: 1.5rem;
}

/* ── Gallery Layout ────────────────────────────────────────────────────── */
.piwigo-layout {
  display: grid;
  grid-template-columns: var(--piw-sidebar-width) 1fr;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 768px) {
  .piwigo-layout {
    grid-template-columns: 1fr;
  }
}

/* ── Sidebar ───────────────────────────────────────────────────────────── */
.piwigo-sidebar {
  background: var(--piw-surface);
  border: 1px solid var(--piw-border);
  border-radius: var(--piw-radius);
  box-shadow: var(--piw-shadow);
  padding: 1rem;
  position: sticky;
  top: 1rem;
  max-height: 85vh;
  overflow-y: auto;
}

.piwigo-sidebar-header {
  font-weight: 700;
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--piw-text-muted);
  padding-bottom: .5rem;
  margin-bottom: .5rem;
  border-bottom: 1px solid var(--piw-border);
}

/* ── Album Tree ────────────────────────────────────────────────────────── */
.piwigo-album-tree-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.piwigo-album-tree-list .piwigo-album-tree-list {
  padding-left: 1rem;
  border-left: 2px solid var(--piw-border);
  margin-left: .5rem;
  margin-top: .2rem;
}

.piwigo-album-node {
  margin: .15rem 0;
}

.piwigo-album-link {
  display: flex;
  align-items: center;
  gap: .4rem;
  padding: .3rem .5rem;
  border-radius: var(--piw-radius-sm);
  text-decoration: none;
  color: var(--piw-text);
  font-size: .9rem;
  transition: background var(--piw-transition), color var(--piw-transition);
}

.piwigo-album-link:hover,
.piwigo-album-link.active {
  background: var(--piw-accent);
  color: #fff;
}

.piwigo-album-count {
  color: var(--piw-text-muted);
  font-size: .78rem;
  margin-left: auto;
}

.piwigo-album-link:hover .piwigo-album-count,
.piwigo-album-link.active .piwigo-album-count {
  color: rgba(255,255,255,.75);
}

/* ── Album Cards (root view) ───────────────────────────────────────────── */
.piwigo-album-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
}

.piwigo-album-card {
  display: block;
  text-decoration: none;
  border-radius: var(--piw-radius);
  overflow: hidden;
  background: var(--piw-surface);
  border: 1px solid var(--piw-border);
  box-shadow: var(--piw-shadow);
  transition: transform var(--piw-transition), box-shadow var(--piw-transition);
}

.piwigo-album-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--piw-shadow-lg);
}

.piwigo-album-card-cover {
  aspect-ratio: 4/3;
  background: var(--piw-bg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.piwigo-album-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.piwigo-album-card:hover .piwigo-album-card-cover img {
  transform: scale(1.05);
}

.piwigo-album-card-placeholder {
  font-size: 3rem;
  opacity: .3;
}

.piwigo-album-card-info {
  padding: .7rem .9rem;
}

.piwigo-album-card-name {
  display: block;
  font-weight: 600;
  color: var(--piw-text);
  margin-bottom: .2rem;
}

.piwigo-album-card-count {
  font-size: .8rem;
  color: var(--piw-text-muted);
}

/* ── Image Grid ────────────────────────────────────────────────────────── */
.piwigo-image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: .75rem;
}

.piwigo-image-item {
  position: relative;
  margin: 0;
  border-radius: var(--piw-radius-sm);
  overflow: hidden;
  background: var(--piw-bg);
  box-shadow: var(--piw-shadow);
}

.piwigo-lightbox-trigger {
  display: block;
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
}

.piwigo-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s ease;
  display: block;
}

.piwigo-thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  opacity: .3;
  min-height: 120px;
}

.piwigo-thumb-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--piw-transition);
}

.piwigo-zoom-icon {
  font-size: 1.8rem;
  opacity: 0;
  transition: opacity var(--piw-transition);
}

.piwigo-lightbox-trigger:hover .piwigo-thumb { transform: scale(1.08); }
.piwigo-lightbox-trigger:hover .piwigo-thumb-overlay { background: rgba(0,0,0,.4); }
.piwigo-lightbox-trigger:hover .piwigo-zoom-icon { opacity: 1; }

.piwigo-image-caption {
  font-size: .75rem;
  color: var(--piw-text-muted);
  padding: .35rem .5rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Pagination ────────────────────────────────────────────────────────── */
.piwigo-pagination {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: 1.5rem;
  justify-content: center;
}

.piwigo-page-btn {
  padding: .4rem .75rem;
  border-radius: var(--piw-radius-sm);
  border: 1px solid var(--piw-border);
  text-decoration: none;
  color: var(--piw-text);
  font-size: .85rem;
  background: var(--piw-surface);
  transition: all var(--piw-transition);
}

.piwigo-page-btn:hover,
.piwigo-page-btn.active {
  background: var(--piw-accent);
  color: #fff;
  border-color: var(--piw-accent);
}

/* ── Updates Page ──────────────────────────────────────────────────────── */
.piwigo-updates-intro {
  color: var(--piw-text-muted);
  margin-bottom: 1.5rem;
}

.piwigo-updates-list {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.piwigo-update-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .9rem 1.2rem;
  background: var(--piw-surface);
  border: 1px solid var(--piw-border);
  border-radius: var(--piw-radius);
  text-decoration: none;
  color: var(--piw-text);
  box-shadow: var(--piw-shadow);
  transition: all var(--piw-transition);
}

.piwigo-update-row:hover {
  border-color: var(--piw-accent);
  box-shadow: 0 4px 16px rgba(59,130,246,.15);
  transform: translateX(4px);
}

.piwigo-update-meta {
  display: flex;
  flex-direction: column;
  min-width: 130px;
}

.piwigo-update-date {
  font-weight: 700;
  font-size: 1rem;
}

.piwigo-update-count {
  font-size: .8rem;
  color: var(--piw-text-muted);
}

.piwigo-update-previews {
  display: flex;
  gap: .4rem;
  align-items: center;
  flex: 1;
  flex-wrap: wrap;
}

.piwigo-preview-thumb {
  width: 52px;
  height: 52px;
  object-fit: cover;
  border-radius: var(--piw-radius-sm);
  border: 2px solid var(--piw-border);
}

.piwigo-more-badge {
  font-size: .75rem;
  color: var(--piw-text-muted);
  background: var(--piw-bg);
  border: 1px solid var(--piw-border);
  border-radius: 999px;
  padding: .15rem .5rem;
  white-space: nowrap;
}

.piwigo-update-arrow {
  font-size: 1.5rem;
  color: var(--piw-text-muted);
  transition: color var(--piw-transition);
}

.piwigo-update-row:hover .piwigo-update-arrow { color: var(--piw-accent); }

/* ── Updates Detail View ───────────────────────────────────────────────── */
.piwigo-updates-header {
  margin-bottom: 1.5rem;
}

.piwigo-back-btn {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  color: var(--piw-accent);
  text-decoration: none;
  font-size: .9rem;
  margin-bottom: .75rem;
  transition: color var(--piw-transition);
}

.piwigo-back-btn:hover { color: var(--piw-accent-dark); }

.piwigo-update-album-group {
  margin-bottom: 2.5rem;
}

.piwigo-group-title {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: 1.1rem;
  margin-bottom: 1rem;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--piw-border);
}

.piwigo-image-count {
  font-size: .8rem;
  color: var(--piw-text-muted);
  font-weight: 400;
}

/* ── Empty State ───────────────────────────────────────────────────────── */
.piwigo-empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--piw-text-muted);
}

.piwigo-empty-state span {
  font-size: 3rem;
  display: block;
  margin-bottom: 1rem;
  opacity: .4;
}

/* ── No Data ───────────────────────────────────────────────────────────── */
.piwigo-no-data {
  color: var(--piw-text-muted);
  font-size: .85rem;
  padding: .5rem;
}

/* ── Lightbox ──────────────────────────────────────────────────────────── */
.piwigo-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.piwigo-lightbox[hidden] { display: none; }

.piwigo-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .88);
  backdrop-filter: blur(4px);
}

.piwigo-lightbox-container {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 95vw;
  max-height: 95vh;
  animation: piw-lb-in .2s ease;
}

@keyframes piw-lb-in {
  from { opacity: 0; transform: scale(.92); }
  to   { opacity: 1; transform: scale(1); }
}

.piwigo-lb-image-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.piwigo-lb-img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--piw-radius);
  box-shadow: var(--piw-shadow-lg);
  display: block;
}

.piwigo-lb-spinner {
  position: absolute;
  font-size: 2rem;
  animation: piw-spin 1s linear infinite;
  display: none;
}

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

.piwigo-lb-spinner.visible { display: block; }

.piwigo-lb-caption {
  color: #fff;
  text-align: center;
  margin-top: .75rem;
  max-width: 80vw;
}

.piwigo-lb-caption strong {
  display: block;
  font-size: 1rem;
}

.piwigo-lb-caption span {
  font-size: .85rem;
  opacity: .75;
}

.piwigo-lb-counter {
  color: rgba(255,255,255,.5);
  font-size: .8rem;
  margin-top: .35rem;
}

/* Lightbox buttons */
.piwigo-lb-close,
.piwigo-lb-prev,
.piwigo-lb-next {
  position: fixed;
  background: rgba(255,255,255,.12);
  border: none;
  color: #fff;
  cursor: pointer;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--piw-transition);
  z-index: 2;
}

.piwigo-lb-close:hover,
.piwigo-lb-prev:hover,
.piwigo-lb-next:hover {
  background: rgba(255,255,255,.28);
}

.piwigo-lb-close { top: 1rem; right: 1rem; }
.piwigo-lb-prev  { left: 1rem;  top: 50%; transform: translateY(-50%); }
.piwigo-lb-next  { right: 1rem; top: 50%; transform: translateY(-50%); }