/*
 * Theme: theme-Serenity
 * Author: Serenity
 * Build: 2026-06-03 10:28:07
 * Fingerprint: 18f8d0015be24d2b
 * Copyright (c) 2026 Serenity. All rights reserved.
 */

.photos-page {
  padding-top: calc(var(--header-height) + var(--space-8));
  padding-bottom: var(--space-10);
  min-height: 100vh;
}

/* 页面标题 */
.photos-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.photos-title {
  font-size: 2rem;
  font-weight: 800;
  font-style: italic;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--color-accent);
  margin-bottom: var(--space-2);
  position: relative;
  display: inline-block;
  transition: color var(--duration-normal), -webkit-text-fill-color var(--duration-normal);
  cursor: default;
}

.photos-header:hover .photos-title {
  color: var(--color-accent);
  -webkit-text-fill-color: var(--color-accent);
}

.photos-title::before,
.photos-title::after {
  content: '';
  position: absolute;
  bottom: -12px;
  height: 3px;
  border-radius: var(--radius-full);
}

.photos-title::before {
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  background: linear-gradient(90deg, 
    transparent, 
    var(--color-accent) 20%, 
    var(--color-accent-secondary) 50%, 
    var(--color-accent) 80%, 
    transparent);
}

.photos-subtitle {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: var(--space-6);
}

/* 空状态 */
.photos-empty {
  text-align: center;
  padding: var(--space-12) var(--space-4);
  color: var(--color-text-muted);
}

.photos-empty svg {
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

/* 分组筛选 */
.photos-filter {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.filter-btn {
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.filter-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.filter-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

/* 瀑布流容器 */
.photos-masonry {
  column-count: 4;
  column-gap: var(--space-4);
}

.photo-item {
  break-inside: avoid;
  margin-bottom: var(--space-4);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.photo-item.hidden {
  display: none;
}

.photo-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-soft);
}

.photo-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  cursor: zoom-in;
  transition: transform 0.4s ease, opacity 0.4s ease;
}

/* 懒加载骨架屏 */
.photo-wrapper img {
  width: 100%;
  display: block;
  cursor: zoom-in;
  transition: transform 0.4s ease, opacity 0.5s ease;
  opacity: 0;
}

/* 图片未加载时给占位高度，让瀑布流正确分列 */
.photo-wrapper:not(.img-loaded) img {
  height: 220px;
  object-fit: cover;
}

/* 图片加载完成后恢复自适应高度 */
.photo-wrapper.img-loaded img {
  height: auto;
  opacity: 1;
}

/* 骨架屏：图片加载前的占位动画 */
.photo-wrapper::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-bg-mute);
  border-radius: inherit;
  z-index: 1;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.photo-wrapper::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    110deg,
    transparent 30%,
    var(--color-border) 50%,
    transparent 70%
  );
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
  border-radius: inherit;
  z-index: 2;
  pointer-events: none;
  transition: opacity 0.4s ease;
  will-change: background-position;
}

.photo-wrapper.img-loaded::after,
.photo-wrapper.img-loaded::before {
  opacity: 0;
  pointer-events: none;
}

@keyframes skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.photo-wrapper:hover img {
  transform: scale(1.05);
}

.photo-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-3);
  background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.photo-time {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 0.75rem;
  color: #fff;
  background: rgba(0, 0, 0, 0.5);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.photo-wrapper:hover .photo-time {
  opacity: 1;
}

.photo-wrapper:hover .photo-overlay {
  opacity: 1;
}

.photo-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: #fff;
  margin-bottom: 2px;
}

.photo-group {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.8);
  background: rgba(255,255,255,0.2);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  width: fit-content;
}

/* 灯箱 */
.photo-lightbox {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  cursor: zoom-out;
}

.photo-lightbox.active {
  opacity: 1;
  visibility: visible;
}

.photo-lightbox-img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.photo-lightbox.active .photo-lightbox-img {
  transform: scale(1);
}

.photo-lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 36px;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s ease;
  z-index: 1;
}

.photo-lightbox-close:hover {
  color: #fff;
}

/* 响应式 */
@media (max-width: 1200px) {
  .photos-masonry {
    column-count: 3;
  }
}

@media (max-width: 768px) {
  .photos-masonry {
    column-count: 2;
    column-gap: var(--space-3);
  }
  
  .photo-item {
    margin-bottom: var(--space-3);
  }
  
  .photos-filter {
    gap: var(--space-2);
  }
  
  .filter-btn {
    padding: var(--space-1) var(--space-3);
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  .photos-masonry {
    column-count: 2;
  }
}