:root {
  --bg1: #210912;
  --bg2: #4f1025;
  --bg3: #8f2f45;
  --glass: rgba(255, 245, 246, 0.12);
  --text: #fff7f8;
  --muted: #f9d5d9;
  --accent: #ffd1dc;
  --shadow: 0 18px 40px rgba(19, 2, 8, 0.45);
}

* {
  box-sizing: border-box;
}

/* 页面基础样式与氛围背景 */
body {
  margin: 0;
  font-family: 'Noto Serif SC', serif;
  color: var(--text);
  min-height: 100vh;
  background: radial-gradient(circle at 15% 20%, #9d3e55 0%, transparent 34%),
    radial-gradient(circle at 80% 10%, #6a1830 0%, transparent 38%),
    linear-gradient(130deg, var(--bg1), var(--bg2), var(--bg3));
}

body.no-scroll {
  overflow: hidden;
}

/* 粒子层固定铺满，不拦截点击 */
#particles {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.lock-screen,
.app {
  position: relative;
  z-index: 1;
}

.hidden {
  display: none;
}

/* 解锁区 */
.lock-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.lock-card {
  width: min(92vw, 460px);
  padding: 28px;
  border-radius: 24px;
  background: rgba(255, 239, 243, 0.14);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.lock-card h1 {
  margin: 0;
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: clamp(2rem, 6vw, 2.8rem);
}

.lock-card p {
  margin: 10px 0;
  color: var(--muted);
}

#unlock-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 14px;
}

#password-input,
#unlock-form button {
  width: 100%;
  border: 0;
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 1rem;
}

#password-input {
  background: rgba(255, 255, 255, 0.86);
}

#unlock-form button {
  color: #430715;
  font-weight: 700;
  cursor: pointer;
  background: linear-gradient(90deg, #ffe0e8, #ffc9d6);
}

.error {
  min-height: 1.3em;
  color: #ffccd6;
}

/* 主内容区 */
.app {
  width: min(1100px, 94vw);
  margin: 0 auto;
  padding: 28px 0 48px;
}

.hero {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: space-between;
  align-items: center;
  background: var(--glass);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 28px;
  padding: clamp(18px, 3vw, 30px);
  box-shadow: var(--shadow);
}

.hero h2 {
  margin: 0;
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: clamp(2rem, 4.2vw, 3rem);
}

.hero p {
  margin: 8px 0;
  color: var(--muted);
}

.days {
  font-size: 1.1rem;
}

.avatars {
  display: flex;
  gap: 14px;
}

.avatars img {
  width: clamp(92px, 14vw, 140px);
  height: clamp(92px, 14vw, 140px);
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 10px 28px rgba(30, 6, 11, 0.4);
}

.timeline-wrap {
  margin-top: 28px;
}

.timeline-wrap h3 {
  margin: 0;
  font-size: 1.6rem;
}

.timeline-subtitle {
  margin: 10px 0 18px;
  color: var(--muted);
}

/* 相册网格 */
.gallery {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 16px;
  align-items: center;
  justify-items: center;
}

.card {
  margin: 0;
  width: 100%;
  align-self: center;
  overflow: hidden;
  border-radius: 18px;
  background: rgba(255, 247, 249, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 10px 26px rgba(22, 4, 11, 0.28);
}

.card .frame {
  width: 100%;
  background: rgba(29, 5, 14, 0.38);
}

.frame.portrait {
  aspect-ratio: 3 / 4;
}

.frame.square {
  aspect-ratio: 1 / 1;
}

.frame.landscape {
  aspect-ratio: 4 / 3;
}

.frame.wide {
  aspect-ratio: 16 / 9;
}

.card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  image-orientation: from-image;
  display: block;
}

.card figcaption {
  padding: 10px 12px 12px;
  color: var(--muted);
  font-size: 0.92rem;
}

/* 灯箱：通过透明层 + 固定定位图片实现平滑放大/缩小 */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 30;
  opacity: 0;
  visibility: hidden;
  background: rgba(7, 3, 6, 0.84);
  backdrop-filter: blur(4px);
  transition: opacity 220ms ease, visibility 220ms ease;
}

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

.lightbox-image {
  position: fixed;
  display: block;
  object-fit: cover;
  cursor: zoom-out;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.42);
  user-select: none;
  -webkit-user-drag: none;
}

.lightbox-image.animating {
  pointer-events: none;
}

.card-horizontal-compact .frame {
  aspect-ratio: 4 / 3;
}

@media (min-width: 700px) {
  .gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    grid-auto-flow: row dense;
  }

  .card-horizontal {
    grid-column: span 2 / span 2;
  }

  /* 比 3:2 略宽，补偿网格列间距，使与竖图视觉高度更协调。 */
  .card-horizontal .frame {
    aspect-ratio: 14 / 9;
  }
}

@media (min-width: 1024px) {
  .gallery {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-auto-flow: row dense;
  }

  .card-horizontal {
    grid-column: span 2 / span 2;
  }

  .card-horizontal .frame {
    aspect-ratio: 14 / 9;
  }
}