/* ==========================================================================
   扶摇 AI 下载中心 — 样式
   亮色为默认，深色可切换；沿用扶摇系列三产品配色
   ========================================================================== */

:root {
  --bg: #f4f5fa;
  --bg-soft: #eceef6;
  --text: #171a2e;
  --text-2: #4a4f6b;
  --text-3: #858aa6;
  --panel: rgba(255, 255, 255, 0.78);
  --panel-strong: #ffffff;
  --line: rgba(23, 26, 46, 0.1);
  --line-2: rgba(23, 26, 46, 0.16);
  --shadow: 0 2px 8px rgba(23, 26, 46, 0.05), 0 16px 40px rgba(23, 26, 46, 0.07);
  --shadow-hover: 0 4px 12px rgba(23, 26, 46, 0.08), 0 24px 56px rgba(23, 26, 46, 0.12);

  --canvas: #5b68f0;
  --manager: #0da98f;
  --director: #9a55ee;
  --accent: #5b68f0;

  --radius: 14px;
  --radius-lg: 20px;
  --wrap: 1160px;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #07070f;
  --bg-soft: #0d0e1a;
  --text: #eceefb;
  --text-2: #a6abc9;
  --text-3: #6f7494;
  --panel: rgba(255, 255, 255, 0.04);
  --panel-strong: #10121f;
  --line: rgba(255, 255, 255, 0.1);
  --line-2: rgba(255, 255, 255, 0.17);
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.3), 0 16px 40px rgba(0, 0, 0, 0.34);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.36), 0 24px 56px rgba(0, 0, 0, 0.46);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.3s, color 0.3s;
}

#stars {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
}

body > *:not(#stars) { position: relative; z-index: 1; }

.wrap { width: calc(100% - 40px); max-width: var(--wrap); margin: 0 auto; }

/* ---------------- 顶栏 ---------------- */
.top {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}

.top-inner {
  height: 64px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  font-size: 16px;
}

.brand img { display: block; border-radius: 8px; }

.brand-text em {
  font-style: normal;
  margin-left: 7px;
  padding-left: 7px;
  border-left: 1px solid var(--line-2);
  font-weight: 400;
  font-size: 14.5px;
  color: var(--text-2);
}

.top-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.db-badge {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--text-2);
  background: var(--panel);
}

.db-badge.ok { color: var(--manager); border-color: color-mix(in srgb, var(--manager) 40%, transparent); }
.db-badge.off { color: #c2761f; border-color: rgba(194, 118, 31, 0.4); }

.back-link {
  font-size: 13.5px;
  color: var(--text-2);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  transition: 0.2s;
}

.back-link:hover { color: var(--text); border-color: var(--line-2); background: var(--panel); }

/* 主题切换按钮 */
.theme-toggle {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text-2);
  cursor: pointer;
  transition: 0.22s;
  flex: none;
}

.theme-toggle:hover {
  color: var(--text);
  border-color: var(--line-2);
  transform: rotate(15deg);
}

.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ---------------- Hero ---------------- */
.hero { padding: 78px 0 40px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  margin: 0 0 18px;
}

.eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent);
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 4.6vw, 46px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.18;
}

.hero-sub {
  margin: 0 0 30px;
  font-size: 16px;
  color: var(--text-2);
  max-width: 660px;
}

.hero-sub b { color: var(--text); font-weight: 600; }

/* 统计条 */
.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
}

.stats li {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 22px;
  min-width: 132px;
  backdrop-filter: blur(10px);
}

.stats b {
  display: block;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.stats span { font-size: 12.5px; color: var(--text-3); }

/* 搜索 */
.search {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 520px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 6px 6px 18px;
  box-shadow: var(--shadow);
}

.search svg { color: var(--text-3); flex: none; }

.search input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  font: inherit;
  font-size: 14.5px;
  color: var(--text);
  padding: 8px 0;
}

.search input::placeholder { color: var(--text-3); }

.search button {
  border: 0;
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  background: var(--accent);
  padding: 8px 20px;
  border-radius: 999px;
  transition: filter 0.2s, transform 0.2s;
}

.search button:hover { filter: brightness(1.08); }
.search button:active { transform: scale(0.97); }

/* 平台筛选 chips */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.chip {
  font-size: 13px;
  color: var(--text-2);
  text-decoration: none;
  padding: 6px 15px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  transition: 0.2s;
}

.chip:hover { color: var(--text); border-color: var(--line-2); }
.chip.on { color: #fff; background: var(--accent); border-color: var(--accent); }

.chip i {
  font-style: normal;
  font-size: 11.5px;
  opacity: 0.72;
  margin-left: 3px;
}

/* 历史版本提示条 */
.history-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  backdrop-filter: blur(10px);
  font-size: 13.5px;
  color: var(--text-2);
}

.history-bar svg { color: var(--text-3); flex: none; }
.history-bar b { color: var(--text); font-weight: 600; }
.history-bar .mini { margin-left: auto; padding: 6px 14px; font-size: 13px; }

/* 历史版本卡片（弱化显示） */
.card.is-old {
  opacity: 0.72;
  border-style: dashed;
}

.card.is-old:hover { opacity: 1; }

.tag-old {
  color: #c2761f;
  border-color: rgba(194, 118, 31, 0.4);
  background: rgba(194, 118, 31, 0.1);
}

/* ---------------- 列表 ---------------- */
.section { padding: 30px 0 84px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 20px;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow);
  transition: transform 0.22s, box-shadow 0.22s, border-color 0.22s;
  backdrop-filter: blur(10px);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--line-2);
}

.card-top {
  display: flex;
  gap: 13px;
  align-items: flex-start;
  margin-bottom: 14px;
}

.icon {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #fff;
  background: linear-gradient(140deg, var(--canvas), var(--director));
}

.icon-exe { background: linear-gradient(140deg, #4f7cff, #5b68f0); }
.icon-msi { background: linear-gradient(140deg, #4f7cff, #5b68f0); }
.icon-zip { background: linear-gradient(140deg, #f0a24b, #e2762e); }
.icon-7z  { background: linear-gradient(140deg, #f0a24b, #e2762e); }
.icon-rar { background: linear-gradient(140deg, #f0a24b, #e2762e); }
.icon-dmg { background: linear-gradient(140deg, #6f7686, #454b5c); }
.icon-pkg { background: linear-gradient(140deg, #6f7686, #454b5c); }
.icon-appimage { background: linear-gradient(140deg, #2fb37a, #0da98f); }
.icon-deb { background: linear-gradient(140deg, #2fb37a, #0da98f); }
.icon-rpm { background: linear-gradient(140deg, #2fb37a, #0da98f); }
.icon-apk { background: linear-gradient(140deg, #b06ff0, #9a55ee); }
.icon-txt { background: linear-gradient(140deg, #8b90ad, #5f6478); }
.icon-md  { background: linear-gradient(140deg, #8b90ad, #5f6478); }

.card-title { min-width: 0; flex: 1; }

.card-title h3 {
  margin: 0 0 4px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.4;
  word-break: break-all;
}

.fn {
  margin: 0;
  font-size: 11.5px;
  font-family: var(--mono);
  color: var(--text-3);
  word-break: break-all;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.tag {
  font-size: 11.5px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text-2);
  border: 1px solid var(--line);
}

.tag-pf {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 35%, transparent);
  background: color-mix(in srgb, var(--accent) 9%, transparent);
}

.tag-ver {
  color: var(--manager);
  border-color: color-mix(in srgb, var(--manager) 35%, transparent);
  background: color-mix(in srgb, var(--manager) 9%, transparent);
  font-family: var(--mono);
}

/* R2 分发标记：Cloudflare 橙，白字，亮/暗色都清晰 */
.tag-r2 {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(135deg, #f38020, #e0552b);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* 卡片右上角的 R2 角标（与下载按钮联动，更醒目） */
.r2-flag {
  flex: none;
  margin-left: auto;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #fff;
  padding: 3px 9px;
  border-radius: 999px;
  background: linear-gradient(135deg, #f38020, #e0552b);
  box-shadow: 0 3px 10px rgba(240, 120, 30, 0.35);
  white-space: nowrap;
}

/* 走 R2 的卡片：顶部描一道橙色边，进一步一眼区分 */
.card.r2 {
  border-color: color-mix(in srgb, #f38020 42%, var(--line));
}

.desc {
  margin: 0 0 14px;
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.meta {
  display: flex;
  gap: 14px;
  font-size: 12px;
  color: var(--text-3);
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  margin-bottom: 14px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  padding: 11px 20px;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: 0.2s;
}

.btn.download {
  color: #fff;
  background: var(--accent);
  box-shadow: 0 6px 18px color-mix(in srgb, var(--accent) 30%, transparent);
}

.btn.download:hover { filter: brightness(1.07); }
.btn.download:active { transform: translateY(1px); }

.btn.ghost {
  color: var(--text-2);
  border-color: var(--line);
  background: var(--panel);
}

.btn.ghost:hover { color: var(--text); border-color: var(--line-2); }

/* 空状态 */
.empty {
  text-align: center;
  padding: 70px 20px;
  border: 1px dashed var(--line-2);
  border-radius: var(--radius-lg);
  background: var(--panel);
}

.empty-icon { font-size: 40px; margin-bottom: 12px; }

.empty h2 { margin: 0 0 8px; font-size: 18px; font-weight: 600; }

.empty p {
  margin: 0 0 18px;
  font-size: 14px;
  color: var(--text-2);
}

/* ---------------- 页脚 ---------------- */
.foot {
  border-top: 1px solid var(--line);
  padding: 30px 0 42px;
  background: var(--bg-soft);
}

.foot-inner { text-align: center; }

.foot p { margin: 0 0 6px; font-size: 13.5px; color: var(--text-2); }
.foot .muted { font-size: 12px; color: var(--text-3); }

/* ---------------- 响应式 ---------------- */
@media (max-width: 760px) {
  .hero { padding: 52px 0 30px; }
  .grid { grid-template-columns: 1fr; gap: 16px; }
  .stats li { min-width: 0; flex: 1 1 96px; padding: 12px 16px; }
  .stats b { font-size: 19px; }
  .search { max-width: none; padding-left: 14px; }
  .search button { padding: 8px 16px; }
  .brand-text em { display: none; }
  .top-inner { height: 58px; }
  .db-badge { display: none; }
  .card { padding: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}