/* ============ 主题变量 ============ */
:root,
[data-theme="dark"] {
  --bg: #15151f;
  --text: #ffffff;
  --text-soft: rgba(255, 255, 255, 0.72);
  --glass-bg: rgba(255, 255, 255, 0.12);
  --glass-bg-hover: rgba(255, 255, 255, 0.18);
  --glass-border: 1px solid rgba(255, 255, 255, 0.22);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.45), 0 2px 8px rgba(0, 0, 0, 0.25);
  --glass-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.4), inset 0 -1px 0 rgba(255, 255, 255, 0.08);
  --glass-blur: blur(20px) saturate(180%);
  --mask: radial-gradient(rgba(0, 0, 0, 0) 0, rgba(0, 0, 0, 0.5) 100%);
  --icon-filter: none;
}

[data-theme="light"] {
  --bg: #e6ebf3;
  --text: #1f2329;
  --text-soft: rgba(31, 35, 41, 0.7);
  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-bg-hover: rgba(255, 255, 255, 0.72);
  --glass-border: 1px solid rgba(200, 210, 230, 0.6);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  --glass-highlight: inset 0 1px 1px rgba(255, 255, 255, 0.95);
  --glass-blur: blur(20px) saturate(180%);
  --mask: radial-gradient(rgba(255, 255, 255, 0) 0, rgba(255, 255, 255, 0.4) 100%);
  --icon-filter: none;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }

body {
  font-family: "HarmonyOS Sans", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  overflow: hidden;
  position: relative;
  transition: background 0.4s, color 0.4s;
}

/* ============ 背景 ============ */
.bg-layer { position: fixed; inset: 0; z-index: 0; }
.bg-img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: blur(12px) brightness(0.6) saturate(1.1);
  transform: scale(1.1);
  transition: filter 0.4s, opacity 0.4s;
}
[data-theme="light"] .bg-img { filter: blur(12px) brightness(1.05) saturate(1.1); }
body.no-bg .bg-layer { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.bg-mask { position: fixed; inset: 0; z-index: 1; background: var(--mask); pointer-events: none; }

/* ============ 加载动画 ============ */
.loader {
  position: fixed; inset: 0; z-index: 50;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg); transition: opacity 0.5s;
}
.loader.hide { opacity: 0; pointer-events: none; }
.spinner {
  width: 42px; height: 42px;
  border: 3px solid rgba(255, 255, 255, 0.25);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
[data-theme="light"] .spinner { border-color: rgba(0, 0, 0, 0.15); border-top-color: #333; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ============ 主题切换按钮 ============ */
.theme-toggle {
  position: fixed; top: 18px; right: 18px; z-index: 40;
  width: 42px; height: 42px; border: none; border-radius: 12px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  color: var(--text); cursor: pointer; font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  transition: 0.3s;
}
.theme-toggle:hover { background: var(--glass-bg-hover); transform: translateY(-2px); }

/* ============ 主体卡片 ============ */
.app {
  position: relative; z-index: 10;
  width: min(92vw, 460px);
  opacity: 0; transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.app.show { opacity: 1; transform: none; }

.card {
  position: relative;
  padding: 38px 30px 26px;
  border-radius: 20px;
  text-align: center;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
}
/* 液态玻璃高光 */
.card::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: 20px;
  box-shadow: var(--glass-highlight);
  pointer-events: none;
}

.avatar {
  width: 96px; height: 96px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 14px; display: block;
  border: 2px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.25);
  transition: transform 0.4s;
}
.card:hover .avatar { transform: scale(1.04); }
.name { font-size: 24px; font-weight: 700; letter-spacing: 0.5px; }
.desc { margin-top: 8px; font-size: 14px; color: var(--text-soft); line-height: 1.6; }

/* ============ 社交图标 ============ */
.social { display: flex; gap: 12px; justify-content: center; margin: 20px 0 6px; flex-wrap: wrap; }
.social-item {
  width: 42px; height: 42px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--glass-bg);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  color: var(--text);
  transition: 0.3s; text-decoration: none;
}
.social-item:hover { background: var(--glass-bg-hover); transform: translateY(-3px); }
.social-icon, .social-item iconify-icon { color: var(--text); font-size: 22px; }

/* ============ 链接卡片 ============ */
.links { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 18px; }
.link-card {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px; border-radius: 14px;
  text-decoration: none; color: var(--text);
  background: var(--glass-bg);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: 0.3s; text-align: left;
}
.link-card:hover { background: var(--glass-bg-hover); transform: translateY(-3px); }
.link-icon {
  width: 36px; height: 36px; flex: 0 0 36px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255, 255, 255, 0.18);
  color: var(--text);
}
[data-theme="light"] .link-icon { background: rgba(0, 0, 0, 0.06); }
.link-icon iconify-icon { font-size: 20px; color: var(--text); }
.link-text { display: flex; flex-direction: column; min-width: 0; }
.link-name { font-size: 15px; font-weight: 600; }
.link-desc {
  font-size: 12px; color: var(--text-soft);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* ============ 页脚 ============ */
.footer { margin-top: 22px; font-size: 12px; color: var(--text-soft); }
.hitokoto { margin-bottom: 6px; font-style: italic; min-height: 16px; }
.copyright { opacity: 0.85; }

@media (max-width: 420px) {
  .links { grid-template-columns: 1fr; }
  .card { padding: 32px 22px 22px; }
}