/* ==========================================================
   新增页签（网易云下载 / 格式转换）样式
   全部挂在 .bc-* 前缀下，不影响原来的 B 站下载页
   ========================================================== */
.bc-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: #fff;
  border-bottom: 1px solid #eceff4;
  position: sticky;
  top: 0;
  z-index: 900;
}
.bc-nav-btn {
  font-family: inherit;
  font-size: 13.5px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  color: #5b6472;
  cursor: pointer;
}
.bc-nav-btn:hover { background: #f4f6f9; color: #1d2129; }
.bc-nav-btn.active { background: #fb7299; color: #fff; }
.bc-theme {
  margin-left: auto;
  display: flex;
  gap: 4px;
  padding: 3px;
  border-radius: 999px;
  background: #f4f6f9;
  border: 1px solid #eceff4;
}
.bc-theme button {
  font-family: inherit;
  font-size: 12.5px;
  padding: 5px 12px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: #5b6472;
  cursor: pointer;
}
.bc-theme button.on { background: #fff; color: #1d2129; box-shadow: 0 1px 6px rgba(0,0,0,.08); }

/* ================= 页面容器（护眼网格背景） ================= */
.bc-pane {
  --bg: #f5efe0;
  --bg-2: #efe7d3;
  --grid: rgba(138, 116, 74, .14);
  --surface: #fffdf6;
  --surface-2: #faf4e4;
  --border: #e2d7bd;
  --text: #3b3226;
  --text-2: #6b5d46;
  --text-3: #9b8b70;
  --accent: #c96a4f;
  --accent-soft: #f6e2d8;
  --shadow: 0 6px 24px rgba(28, 24, 14, .08);

  position: relative;
  min-height: calc(100vh - 60px);
  color: var(--text);
  background: var(--bg);
  background-image:
    linear-gradient(to right, var(--grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid) 1px, transparent 1px);
  background-size: 30px 30px;
  padding: 20px 0 40px;
}
.bc-pane[data-theme="light"] {
  --bg: #f7f8fa; --bg-2: #ffffff; --grid: rgba(84,104,140,.10);
  --surface: #ffffff; --surface-2: #f4f6f9; --border: #e5e9ef;
  --text: #1d2129; --text-2: #5b6472; --text-3: #98a1b0;
  --accent: #fb7299; --accent-soft: #ffe6ee;
}
.bc-pane[data-theme="dark"] {
  --bg: #14161a; --bg-2: #1a1d23; --grid: rgba(150,170,210,.09);
  --surface: #1b1e25; --surface-2: #212530; --border: #2a2f3a;
  --text: #e8ecf3; --text-2: #a7b0bf; --text-3: #77808f;
  --accent: #ff7fa3; --accent-soft: #3a2630;
  --shadow: 0 8px 28px rgba(0,0,0,.45);
}

.bc-wrap { max-width: 1000px; margin: 0 auto; padding: 0 18px; }
.bc-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 18px;
}
.bc-card-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.bc-card-head h2 { margin: 0; font-size: 15.5px; }
.bc-who { margin-left: auto; display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--text-3); }
.bc-tag { font-size: 10.5px; font-weight: 600; padding: 2px 8px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }

.bc-row { display: flex; align-items: center; gap: 10px; }
.bc-row.wrap { flex-wrap: wrap; margin-top: 10px; }
.bc-row .grow { flex: 1; min-width: 180px; }

.bc-input, .bc-select {
  font-family: inherit;
  font-size: 13px;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  outline: none;
  min-width: 0;
}
.bc-input.sm { padding: 7px 10px; font-size: 12.5px; width: 190px; }
.bc-input:focus, .bc-select:focus { border-color: var(--accent); }

.bc-btn {
  font-family: inherit;
  font-size: 13px;
  padding: 10px 18px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
}
.bc-btn:hover { filter: brightness(1.05); }
.bc-btn:disabled { opacity: .5; cursor: not-allowed; }
.bc-btn.ghost { background: transparent; color: var(--accent); border-color: var(--border); }
.bc-btn.ghost:hover { background: var(--accent-soft); }
.bc-btn.sm { padding: 7px 12px; font-size: 12.5px; border-radius: 9px; }

.bc-hint { font-size: 12px; color: var(--text-3); margin: 10px 0 6px; }

/* 歌曲列表 */
.bc-list { display: flex; flex-direction: column; gap: 6px; max-height: 520px; overflow-y: auto; }
.bc-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: 12px; border: 1px solid transparent;
}
.bc-item:hover { background: var(--surface-2); border-color: var(--border); }
.bc-item img { width: 46px; height: 46px; border-radius: 9px; object-fit: cover; background: var(--surface-2); flex: none; }
.bc-item .bc-meta { flex: 1; min-width: 0; }
.bc-item .bc-name { font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bc-item .bc-sub { font-size: 11.5px; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 2px; }
.bc-item .bc-acts { display: flex; gap: 6px; flex: none; }
.bc-item .bc-btn.sm { padding: 6px 10px; font-size: 12px; }

/* 转换器 */
.bc-drop {
  border: 1.5px dashed var(--border);
  border-radius: 14px;
  background: var(--surface-2);
  padding: 26px 18px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.bc-drop:hover, .bc-drop.over { border-color: var(--accent); background: var(--accent-soft); }
.bc-drop-title { font-size: 13.5px; font-weight: 600; }
.bc-drop-sub { font-size: 11.5px; color: var(--text-3); margin-top: 6px; word-break: break-all; }

.bc-field { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--text-2); }
.bc-field span { white-space: nowrap; }

.bc-progress { height: 6px; background: var(--surface-2); border-radius: 999px; overflow: hidden; margin: 14px 0 8px; }
.bc-bar { height: 100%; width: 0; background: var(--accent); transition: width .2s; }

.bc-log {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11.5px; line-height: 1.65;
  color: var(--text-2);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  max-height: 190px; overflow-y: auto;
  white-space: pre-wrap; word-break: break-all;
}

/* ================= 手机 ================= */
@media (max-width: 760px) {
  .bc-nav { flex-wrap: wrap; gap: 8px; padding: 10px 12px; }
  .bc-nav-btn { flex: 1; text-align: center; padding: 8px 10px; font-size: 13px; }
  .bc-theme { margin-left: 0; width: 100%; justify-content: flex-end; }
  .bc-wrap { padding: 0 10px; }
  .bc-card { padding: 13px; border-radius: 14px; }
  .bc-card-head { flex-wrap: wrap; gap: 6px; }
  .bc-card-head h2 { font-size: 15px; }
  .bc-who { margin-left: 0; width: 100%; }
  .bc-row { flex-wrap: wrap; }
  .bc-row .grow { flex: 1 1 100%; }
  #muQuery { flex: 1 1 100%; }
  #muSearchBtn { flex: 0 0 auto; }
  #muQuality { flex: 1 1 120px; min-width: 0; }
  .bc-row.wrap .bc-btn.ghost { flex: 1 1 calc(50% - 6px); }
  .bc-input.sm { flex: 1 1 100%; width: 100%; }
  .bc-list { max-height: none; gap: 4px; }
  .bc-item { flex-wrap: wrap; gap: 8px; padding: 8px; }
  .bc-item img { width: 40px; height: 40px; }
  .bc-item .bc-meta { flex: 1 1 calc(100% - 52px); }
  .bc-item .bc-name { white-space: normal; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
  .bc-item .bc-acts { width: 100%; justify-content: flex-end; }
  .bc-drop { padding: 20px 12px; }
  .bc-field { width: 100%; justify-content: space-between; }
  .bc-field .bc-select { flex: 1; }
  #cvBtn { width: 100%; }
  .bc-log { max-height: 150px; font-size: 11px; }
}