/* 原格式*/
@import url('style18.css');
@import url('style19.css');
@import url('style20.css');

/* ── CSS 变量 ─────────────────────────────────────── */
:root {
  --bg: #0f172a;
  --card-bg: #1e293b;
  --border: #334155;
  --text: #f8fafc;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --hover-bg: #334155;
  --radius: 1rem;
  --card-radius: 0.75rem;
}

/* ── 重置 ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

/* ── 背景层 ───────────────────────────────────────── */
#bg-canvas {
  position: fixed; inset: 0;
  width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
}
#bg-image {
  position: fixed; inset: 0;
  background-size: cover; background-position: center;
  z-index: 0; pointer-events: none;
  opacity: 0; transition: opacity 0.5s;
}
#bg-image.active { opacity: 1; }

/* ── 内容层（在背景层上方） ───────────────────────── */
#app { position: relative; z-index: 1; }

/* ── Header ──────────────────────────────────────── */
header {
  padding: 1.5rem 1rem 1rem;
  text-align: center;
  background: linear-gradient(to bottom, rgba(15,23,42,0.6), transparent);
}
h1 {
  font-size: 2rem;
  color: var(--accent);
  letter-spacing: 0.08rem;
  margin-bottom: 0.25rem;
}
.site-desc { font-size: 0.9rem; color: var(--muted); }

/* ── 顶部工具栏 ───────────────────────────────────── */
.topbar {
  position: relative;
  padding: 0.5rem 1.25rem;
  min-height: 44px;
}

/* ── 分类导航 ─────────────────────────────────────── */
.navbar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  max-width: 1400px;
  margin: 0 auto;
}
.navbar button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 0.4rem 0.9rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
}
.navbar button:hover { background: var(--hover-bg); color: var(--text); }
.navbar button.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  font-weight: 600;
}

/* ── 搜索框 ───────────────────────────────────────── */
.search-wrap {
  max-width: 560px;
  margin: 0.75rem auto;
  padding: 0 1rem;
  position: relative;
}
.search-wrap input {
  width: 100%;
  padding: 0.65rem 2.5rem 0.65rem 1.25rem;
  border-radius: 9999px;
  border: 1px solid var(--border);
  background: rgba(30,41,59,0.8);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  backdrop-filter: blur(4px);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.search-wrap input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56,189,248,0.15);
}
.search-clear {
  position: absolute; right: 1.75rem; top: 50%;
  transform: translateY(-50%);
  background: none; border: none; cursor: pointer;
  color: var(--muted); font-size: 1rem; display: none;
}
.search-info {
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
  min-height: 1.2em;
}

/* ── 卡片容器 ─────────────────────────────────────── */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0.5rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1.25rem;
}

@media (max-width: 640px) {
  .container { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 0.75rem; }
}

/* ── 卡片（居中对齐） ────────────────────────────── */
.card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.card-icon, .card-icon-placeholder {
  display: block;
  margin: 0 auto 0.75rem;
}

/* ── Tooltip ──────────────────────────────────────── */
#tooltip {
  position: fixed;
  background: rgba(15,23,42,0.96);
  color: var(--text);
  padding: 0.65rem 0.9rem;
  border-radius: 0.5rem;
  font-size: 0.82rem;
  max-width: 300px;
  pointer-events: none;
  z-index: 9999;
  display: none;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
  border: 1px solid var(--accent);
  backdrop-filter: blur(6px);
  line-height: 1.5;
}
#tooltip .tt-url { color: var(--accent); font-size: 0.75rem; margin-bottom: 4px; word-break: break-all; }
#tooltip .tt-desc { color: var(--text); }

/* ── 空状态 ───────────────────────────────────────── */
.empty-state {
  grid-column: 1/-1;
  text-align: center;
  color: var(--muted);
  padding: 4rem 0;
  font-size: 0.95rem;
}

/* ── 响应式 ───────────────────────────────────────── */
@media (max-width: 640px) {
  h1 { font-size: 1.4rem; }
  .container { padding: 0.5rem 0.75rem 3rem; }
}

/* ── 设置按钮 ────────────────────────────────────── */
.settings-wrap {
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
}

.settings-btn {
  padding: 0.4rem 0.9rem;
  border-radius: 0.5rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  backdrop-filter: blur(4px);
  letter-spacing: 0.02em;
}
.settings-btn:hover {
  background: var(--hover-bg);
  color: var(--text);
  border-color: rgba(148, 163, 184, 0.5);
}

/* ── 设置模态窗口 ────────────────────────────────── */
.settings-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.settings-modal[hidden] { display: none; }

.settings-modal-box {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 1rem;
  width: 100%;
  max-width: 420px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6);
  overflow: hidden;
}

.settings-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.settings-modal-close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 0.25rem;
  border-radius: 0.25rem;
  transition: color 0.2s;
}
.settings-modal-close:hover { color: var(--text); }

.settings-modal-body {
  padding: 0.75rem 1.25rem 1.25rem;
  overflow-y: auto;
  flex: 1;
}
.settings-modal-body::-webkit-scrollbar { width: 4px; }
.settings-modal-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.settings-group { margin-bottom: 0.5rem; }

.settings-group-title {
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.6rem 0 0.3rem;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.4rem 0;
}

.settings-label {
  font-size: 0.85rem;
  color: var(--text);
}

.settings-divider {
  height: 1px;
  background: var(--border);
  margin: 0.25rem 0;
}

/* 音乐 URL 输入 */
.settings-music-url {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}
.settings-music-url input {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 0.4rem;
  padding: 0.4rem 0.65rem;
  font-size: 0.8rem;
  outline: none;
  transition: border-color 0.2s;
}
.settings-music-url input:focus { border-color: var(--accent); }
.settings-music-url button {
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 0.4rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity 0.2s;
}
.settings-music-url button:hover { opacity: 0.85; }

/* Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 22px;
  cursor: pointer;
  flex-shrink: 0;
}
.toggle-switch input { display: none; }
.toggle-track {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: 9999px;
  transition: background 0.2s;
}
.toggle-track::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: transform 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.toggle-switch input:checked + .toggle-track { background: var(--accent); }
.toggle-switch input:checked + .toggle-track::after { transform: translateX(18px); }

/* 背景列表 */
.settings-bg-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.35rem;
  max-height: 180px;
  overflow-y: auto;
  padding: 0.1rem 0;
}
.settings-bg-list::-webkit-scrollbar { width: 4px; }
.settings-bg-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.settings-bg-group {
  grid-column: 1 / -1;
  font-size: 0.68rem;
  color: var(--muted);
  padding: 0.3rem 0 0.1rem;
  opacity: 0.7;
}

.settings-bg-item {
  padding: 0.35rem 0.6rem;
  font-size: 0.78rem;
  color: var(--text);
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 0.35rem;
  transition: background 0.15s, border-color 0.15s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  background: rgba(255,255,255,0.03);
}
.settings-bg-item:hover { background: var(--hover-bg); }
.settings-bg-item.active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(56, 189, 248, 0.06);
}

/* 风格选择 */
.settings-style-list {
  display: flex;
  gap: 0.5rem;
  padding: 0.25rem 0 0.25rem;
}

.settings-style-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.6rem 0.25rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.75rem;
  color: var(--muted);
  background: rgba(255,255,255,0.02);
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.settings-style-item:hover {
  border-color: var(--accent);
  color: var(--text);
}
.settings-style-item.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(56, 189, 248, 0.07);
}
.style-icon { font-size: 1.1rem; }

/* ── Header 设置按钮 ─────────────────────────────── */
.header-settings-btn {
  display: inline-block;
  margin-top: 0.6rem;
  padding: 0.3rem 0.9rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 0.5rem;
  font-size: 0.82rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.header-settings-btn:hover {
  background: var(--hover-bg);
  color: var(--text);
  border-color: rgba(148, 163, 184, 0.5);
}

/* ── 设置面板 select ─────────────────────────────── */
.settings-select {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 0.4rem;
  padding: 0.3rem 0.5rem;
  font-size: 0.82rem;
  outline: none;
  cursor: pointer;
  min-width: 140px;
}
.settings-select:focus { border-color: var(--accent); }

.settings-console-btn {
  background: var(--hover-bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 0.4rem;
  padding: 0.25rem 0.65rem;
  font-size: 0.78rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.settings-console-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── 控制台模式悬浮返回按钮 ──────────────────────── */
#back-to-nav-btn {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 600;
  background: rgba(15, 23, 42, 0.9);
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 2rem;
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  transition: background 0.2s, transform 0.2s;
}
#back-to-nav-btn:hover {
  background: rgba(56, 189, 248, 0.15);
  transform: scale(1.04);
}