/* ============ 主题变量 ============ */
:root {
  --bg: #0b0d12;
  --bg-soft: #12151d;
  --card: #151925;
  --card-hover: #1b2130;
  --border: #242b3a;
  --text: #e6e9f0;
  --text-dim: #9aa3b8;
  --text-faint: #6b7488;
  --accent: #7c8cff;
  --accent-soft: rgba(124, 140, 255, 0.14);
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .22);
  --radius: 14px;
}

[data-theme="light"] {
  --bg: #f6f7fb;
  --bg-soft: #ffffff;
  --card: #ffffff;
  --card-hover: #fbfcff;
  --border: #e3e6ef;
  --text: #1b2030;
  --text-dim: #5a6478;
  --text-faint: #8a93a6;
  --accent: #4f5bd5;
  --accent-soft: rgba(79, 91, 213, .1);
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 8px 24px rgba(16, 24, 40, .06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.wrap {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============ 顶栏 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand { display: flex; align-items: center; gap: 12px; }

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--accent), #b47cff);
  color: #fff;
  font-weight: 700;
  letter-spacing: .5px;
  font-size: 15px;
}

.brand-title { margin: 0; font-size: 19px; font-weight: 650; letter-spacing: .2px; }
.brand-sub { margin: 0; font-size: 12.5px; color: var(--text-dim); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.updated { font-size: 12.5px; color: var(--text-faint); }

.icon-btn {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-soft);
  color: var(--text-dim);
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}

.icon-btn:hover { background: var(--card-hover); color: var(--text); border-color: var(--accent); }

/* ============ 控制区 ============ */
.controls { padding: 22px 0 6px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text-dim);
  font-size: 13.5px;
  cursor: pointer;
  transition: all .15s ease;
}

.chip:hover { border-color: var(--accent); color: var(--text); }

.chip[aria-pressed="true"] {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--text);
  font-weight: 550;
}

.chip .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--chip-color, var(--accent)); }
.chip .count { font-size: 12px; color: var(--text-faint); }

.controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.search-box { flex: 1 1 260px; }

.search-box input {
  width: 100%;
  padding: 9px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-soft);
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color .15s ease;
}

.search-box input:focus { border-color: var(--accent); }

.switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  color: var(--text-dim);
  cursor: pointer;
  user-select: none;
}

select {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-soft);
  color: var(--text-dim);
  font-size: 13.5px;
  cursor: pointer;
}

.result-count { margin: 12px 0 0; font-size: 12.5px; color: var(--text-faint); }

/* ============ 列表 ============ */
.feed { padding: 8px 0 40px; }

.day-group { margin-bottom: 26px; }

.day-label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-faint);
  letter-spacing: .4px;
}

.day-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.cards { display: grid; gap: 10px; }

.card {
  padding: 15px 17px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}

.card:hover { transform: translateY(-1px); border-color: var(--accent); background: var(--card-hover); }

.card-title {
  margin: 0 0 8px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
}

.card-title a { text-decoration: none; }
.card-title a:hover { color: var(--accent); }

.card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-faint);
}

.badge {
  padding: 2px 9px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 550;
  color: #fff;
  background: var(--badge-color, var(--accent));
}

.badge-outline {
  padding: 2px 9px;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-dim);
}

.card-summary {
  margin: 9px 0 0;
  font-size: 13.5px;
  color: var(--text-dim);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-ai {
  margin: 10px 0 0;
  padding: 9px 12px;
  border-left: 2px solid var(--accent);
  border-radius: 0 8px 8px 0;
  background: var(--accent-soft);
  font-size: 13.5px;
  color: var(--text);
}

.card-ai .ai-tag {
  margin-right: 6px;
  font-size: 11.5px;
  color: var(--accent);
  font-weight: 600;
}

/* ============ 状态 ============ */
.skeleton-wrap { display: grid; gap: 10px; }

.skeleton {
  height: 92px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(90deg, var(--bg-soft), var(--card), var(--bg-soft));
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite linear;
}

@keyframes shimmer {
  from { background-position: 200% 0; }
  to { background-position: -200% 0; }
}

.empty, .error-box {
  padding: 40px 20px;
  text-align: center;
  color: var(--text-dim);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

.error-box code {
  padding: 2px 6px;
  border-radius: 5px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
}

.error-box pre {
  margin: 12px 0 0;
  padding: 10px;
  overflow-x: auto;
  text-align: left;
  font-size: 12.5px;
  color: var(--text-faint);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
}

/* ============ 页脚 ============ */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 22px 0 40px;
  font-size: 13px;
  color: var(--text-dim);
}

.site-footer p { margin: 4px 0; }
.site-footer .muted { color: var(--text-faint); }
.site-footer code {
  padding: 1px 6px;
  border-radius: 5px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  font-size: 12px;
}

@media (max-width: 640px) {
  .brand-sub { display: none; }
  .updated { display: none; }
  .header-inner { padding-top: 10px; padding-bottom: 10px; }
  .controls { padding-top: 16px; }
}