:root {
  --color-bg: #f5f6f8;
  --color-surface: #ffffff;
  --color-primary: #3b6ef5;
  --color-primary-strong: #2f5ad6;
  --color-danger: #e5484d;
  --color-text: #1c2430;
  --color-text-secondary: #5b6673;
  --color-text-muted: #93a0ad;
  --color-border: #e6e9ee;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(20, 30, 45, 0.06);
  --shadow-md: 0 6px 20px rgba(20, 30, 45, 0.10);
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-stack);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

@media (max-width: 768px) {
  .container { padding: 0 var(--space-4); }
}

/* header */
.site-header {
  background: linear-gradient(120deg, #3b6ef5 0%, #6a4df5 100%);
  color: #fff;
  padding: var(--space-6) 0;
}
.header-inner { display: flex; flex-direction: column; gap: var(--space-2); align-items: flex-start; }
.brand { display: flex; align-items: center; gap: var(--space-3); }
.brand-dot {
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff; box-shadow: 0 0 0 5px rgba(255, 255, 255, 0.22);
}
.site-header h1 { margin: 0; font-size: 24px; font-weight: 700; }
.subtitle { margin: 0; color: rgba(255, 255, 255, 0.86); font-size: 14px; }

/* panel */
.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  margin-top: var(--space-5);
}
main.container { padding-bottom: var(--space-6); }
.panel-title { margin: 0 0 var(--space-3); font-size: 17px; font-weight: 600; }
.hint { margin: 0 0 var(--space-4); color: var(--color-text-secondary); font-size: 14px; }

/* upload */
.upload-row { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.upload-status { font-size: 14px; color: var(--color-text-secondary); }
.upload-status.error { color: var(--color-danger); }
.upload-status.ok { color: #1a9d63; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 8px 16px; border-radius: var(--radius-md);
  font-size: 14px; font-weight: 500; cursor: pointer;
  border: 1px solid transparent; transition: background 180ms, border-color 180ms, color 180ms;
  width: auto; user-select: none;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-strong); }
.btn-ghost { background: transparent; border-color: var(--color-border); color: var(--color-text-secondary); }
.btn-ghost:hover:not(:disabled) { border-color: var(--color-primary); color: var(--color-primary); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* gallery */
.gallery-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-4); }
.badge {
  display: inline-block; min-width: 20px; padding: 0 8px;
  font-size: 13px; line-height: 20px; text-align: center;
  color: var(--color-primary); background: rgba(59, 110, 245, 0.1);
  border-radius: 999px;
}
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-4);
}
.card {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #fafbfc;
}
.card-thumb {
  display: block; width: 100%; aspect-ratio: 1 / 1;
  object-fit: cover; cursor: zoom-in; background: #eef1f4;
}
.card-meta {
  padding: var(--space-2) var(--space-3);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-2);
}
.card-name {
  font-size: 12px; color: var(--color-text-secondary);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.card-source {
  flex: none; font-size: 11px; padding: 1px 6px; border-radius: var(--radius-sm);
  color: var(--color-text-muted); background: #eef1f4;
}
.card-source.wechat { color: #1a9d63; background: rgba(26, 157, 99, 0.12); }
.card-del {
  position: absolute; top: 6px; right: 6px;
  width: 26px; height: 26px; border-radius: 50%;
  border: none; background: rgba(28, 36, 48, 0.55); color: #fff;
  font-size: 15px; line-height: 1; cursor: pointer; display: none;
}
.card:hover .card-del { display: block; }
.card-del:hover { background: var(--color-danger); }

.empty-state { text-align: center; color: var(--color-text-muted); padding: var(--space-6) 0; }

/* pager */
.pager { display: flex; align-items: center; justify-content: center; gap: var(--space-4); margin-top: var(--space-5); }
.page-indicator { font-size: 14px; color: var(--color-text-secondary); }

/* miniprogram */
.mp-panel .miniprogram-entry { display: flex; flex-direction: column; align-items: center; gap: var(--space-3); }
.mp-qrcode { border: 1px solid var(--color-border); border-radius: var(--radius-md); background: #fff; padding: 8px; }
.mp-fallback { color: var(--color-text-muted); font-size: 14px; }

/* footer */
.site-footer { padding: var(--space-5) 0; color: var(--color-text-muted); font-size: 13px; text-align: center; }

/* lightbox */
/* 注意：.lightbox 显式设了 display:flex，会覆盖浏览器默认的 [hidden]{display:none}，
   必须再补一条 [hidden] 规则，否则隐藏态的空 src 大图会一进页面就显示成裂开的图。 */
.lightbox[hidden] { display: none; }
.lightbox {
  position: fixed; inset: 0; background: rgba(12, 16, 22, 0.86);
  display: flex; align-items: center; justify-content: center; z-index: 50; padding: var(--space-5);
}
.lightbox img { max-width: 92vw; max-height: 88vh; border-radius: var(--radius-md); box-shadow: var(--shadow-md); }
.lightbox-close {
  position: absolute; top: 18px; right: 22px;
  width: 40px; height: 40px; border-radius: 50%; border: none;
  background: rgba(255, 255, 255, 0.16); color: #fff; font-size: 24px; cursor: pointer;
}
.lightbox-close:hover { background: rgba(255, 255, 255, 0.28); }

@media (max-width: 480px) {
  .gallery { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: var(--space-3); }
  .card-del { display: block; }
}