:root #tool-body {
  --bg-color: #f5f7fa;
  --card-bg: #ffffff;
  --primary: #1e9fff;
  --success: #16baaa;
  --dark-item: #2b2d36;
}

#tool-body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

#tool-body .upload-area {
  padding: 40px;
  text-align: center;
  border-radius: 8px;
  border-width: 2px;
  cursor: pointer;
  transition: .3s;
  display: block;
  color: inherit;
}

#tool-body .layui-form-select input {
  height: 44px;
}

#tool-body .upload-area:hover {
  border-color: var(--primary);
}

#tool-body .upload-icon {
  font-size: 48px;
  color: var(--primary);
  margin-bottom: 10px;
}

#tool-body .upload-area h3 {
  margin-bottom: 5px;
}

#tool-body .upload-area p {
  color: #999;
  font-size: 14px;
}

#tool-body .section-title { margin: 25px 0 15px; font-weight: bold; display: flex; justify-content: space-between; align-items: center; }
#tool-body .clear-btn { font-size: 14px; color: #ff5722; cursor: pointer; font-weight: normal; }

#tool-body .audio-item {
  background: var(--dark-item); color: #fff; border-radius: 8px; margin-bottom: 15px; padding: 15px;
  display: flex; align-items: center; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15); position: relative; overflow: hidden;
}
#tool-body .play-btn {
  z-index: 1; width: 40px; height: 40px; background: rgba(255, 255, 255, 0.1); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; cursor: pointer; margin-right: 15px; flex-shrink: 0; transition: 0.2s;
}
#tool-body .play-btn:hover { background: var(--primary); transform: scale(1.1); }
#tool-body .play-btn i { font-size: 20px; color: #fff; }
#tool-body .audio-info { flex: 1; min-width: 0; margin-right: 20px; pointer-events: none; z-index: 1; }
#tool-body .file-name { font-size: 14px; font-weight: bold; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#tool-body .file-meta { font-size: 12px; color: #bbb; margin-bottom: 5px; }
#tool-body .badge-wav { background: #ffb800; color: #333; padding: 0 4px; border-radius: 2px; font-size: 10px; margin-left: 5px; }
#tool-body .del-btn { z-index: 1; margin-left: 15px; color: #ff5722; cursor: pointer; font-size: 20px; opacity: 0.6; transition: 0.2s; padding: 10px; }
#tool-body .del-btn:hover { opacity: 1; transform: scale(1.1); }
#tool-body .waveform-box { height: 50px; width: 100%; position: absolute; top: 0; left: 0; opacity: 0.4; }
#tool-body .convert-progress { width: 100%; height: 3px; background: #555; margin-top: 8px; border-radius: 2px; overflow: hidden; display: none; }
#tool-body .convert-progress-bar { height: 100%; background: #1e9fff; width: 0%; transition: width 0.2s; }

#tool-body .control-panel-wrapper {
  background: var(--card-bg); border-radius: 12px; box-shadow: 0 4px 20px rgba(0,0,0,0.05);
  margin-top: 20px; overflow: hidden; transition: 0.3s; border: 1px solid #eee;
}

#tool-body .mode-tabs { display: flex; background: #f2f4f7; padding: 6px; gap: 6px; }
#tool-body .mode-tab {
  flex: 1; text-align: center; padding: 12px 10px; border-radius: 8px; cursor: pointer;
  transition: all 0.2s ease; color: #666; border: 1px solid transparent; user-select: none;
}
#tool-body .mode-tab i { font-size: 18px; margin-right: 4px; vertical-align: bottom; }
#tool-body .mode-tab span { font-weight: bold; font-size: 15px; }
#tool-body .mode-tab .mode-desc { font-size: 11px; opacity: 0.7; margin-top: 4px; font-weight: normal; }
#tool-body .mode-tab:hover { background: rgba(255,255,255,0.5); }

#tool-body .mode-tab.active[data-mode="lossy"] { background: #fafafa; color: var(--primary); }
#tool-body .mode-tab.active[data-mode="lossless"] { background: #fafafa; color: var(--success); }

#tool-body .panel-content { padding: 25px; border-top: 1px solid #eee; transition: 0.3s; }
.mode-lossy-theme { --theme-color: #1e9fff; }
.mode-lossless-theme { --theme-color: #16baaa; }

#tool-body .slider-header { display: flex; justify-content: space-between; margin-bottom: 5px; font-size: 14px; }
#tool-body .slider-val { font-weight: bold; color: var(--theme-color); }
#tool-body .slider-marks { 
  display: flex; 
  justify-content: space-between; 
  margin-top: 15px; 
  font-size: 12px; 
  color: #999; 
  padding: 0 5px; 
}
#tool-body .common-action-area {
  display: flex; align-items: center; gap: 15px; padding-top: 20px; border-top: 1px dashed #eee; flex-wrap: wrap; margin-top: 20px;
}
#tool-body .format-picker { display: flex; align-items: center; gap: 10px; background: #f8f9fa; padding: 5px 15px; border-radius: 6px; }
#tool-body .format-picker label { font-size: 12px; color: #666; font-weight: bold;}
#tool-body .simple-select { border: none; background: transparent; font-size: 14px; font-weight: 500; color: #333; outline: none; cursor: pointer; min-width: 80px; }
#tool-body .adv-toggle { cursor: pointer; font-size: 13px; color: #666; padding: 5px 10px; border-radius: 4px; user-select: none; }
#tool-body .adv-toggle:hover { background: #f0f0f0; color: var(--theme-color) !important; }
#tool-body #processBtn { flex: 1; background-color: var(--theme-color); min-width: 200px; transition: 0.3s; border: none;}

#tool-body .advanced-panel { background: #fcfcfc; border: 1px solid #eee; border-radius: 6px; padding: 15px; margin-top: 15px; }
#tool-body .adv-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 15px; }
#tool-body .adv-item { display: flex; flex-direction: column; gap: 5px; }
#tool-body .adv-item label { font-size: 12px; color: #999; }
#tool-body .adv-item select { padding: 6px; border: 1px solid #ddd; border-radius: 4px; font-size: 13px; outline: none; }
#tool-body .checkbox-item { flex-direction: row; align-items: center; justify-content: flex-start; padding-top: 20px; }

#tool-body .output-area { display: none; margin-top: 40px; border-top: 1px solid #eee; padding-top: 20px; }
#tool-body .output-item {
  border: 1px solid #eee; border-radius: 6px; padding: 12px 15px; margin-bottom: 10px;
  display: flex; align-items: center; justify-content: space-between; background: #fff; flex-wrap: wrap; gap: 10px;
}
#tool-body .output-left { display: flex; align-items: center; gap: 15px; flex: 1; min-width: 0; }
#tool-body .output-name { font-weight: bold; font-size: 14px; max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#tool-body .tag-dest { background: #fff8e1; color: #d6a306; border: 1px solid #ffeebb; padding: 2px 6px; border-radius: 4px; font-size: 12px; }
#tool-body .tag-saved { background: #e3f9f5; color: #16baaa; border: 1px solid #c2e9e3; padding: 2px 6px; border-radius: 4px; font-size: 12px; margin-left: 5px; }
#tool-body .tag-magnify {color: #999;
  background: #eee;
  border: 1px solid #e2e2e2;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
  margin-left: 5px;}
#tool-body .output-player-wrap { display: flex; align-items: center; gap: 10px; }

#tool-body .output-player-wrap a.layui-btn{
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
#tool-body audio { height: 32px; outline: none; max-width: 300px; border-radius: 20px; }

@media screen and (max-width: 1000px) {
  #tool-body .upload-area {
    padding: 20px;
  }

  #tool-body .output-item {
    flex-direction: column;
    align-items: flex-start;
    padding: 15px;
  }

  #tool-body .output-left {
    width: 100%;
    margin-bottom: 8px;
    justify-content: space-between;
  }

  #tool-body .output-name {
    max-width: 60vw;
  }

  #tool-body .output-player-wrap {
    width: 100%;
    gap: 12px;
  }

  #tool-body audio {
    width: 100%;
    max-width: none;
    height: 40px;
  }

  #tool-body .download-btn-group {
    display: flex;
    justify-content: flex-end;
  }
}
.theme-dark-mode #tool-body { color: #ddd; }
.theme-dark-mode #tool-body .control-panel-wrapper, .theme-dark-mode #tool-body .output-item { background: #2b2b2b; border-color: #444; }
.theme-dark-mode #tool-body .mode-tabs { background: #333; }
.theme-dark-mode #tool-body .mode-tab { color: #aaa; }
.theme-dark-mode #tool-body .mode-tab:hover { background: #444; }
.theme-dark-mode #tool-body .mode-tab.active[data-mode="lossy"] { background: #3a3a3a; color: var(--primary); border-color: #444; }
.theme-dark-mode #tool-body .mode-tab.active[data-mode="lossless"] { background: #3a3a3a; color: var(--success); border-color: #444; }
.theme-dark-mode #tool-body .format-picker, .theme-dark-mode #tool-body .advanced-panel { background: #333; border-color: #444; }
.theme-dark-mode #tool-body .simple-select, .theme-dark-mode #tool-body .output-name, .theme-dark-mode #tool-body select { color: #ddd; background: transparent; }
.theme-dark-mode #tool-body .simple-select option, .theme-dark-mode #tool-body select option { background: #333; }
.theme-dark-mode #tool-body audio { filter: invert(0.85); }
.theme-dark-mode #tool-body .adv-item select { border-color: #555; }
.theme-dark-mode #tool-body .layui-quote-nm { border-color: #444; color: #aaa; border-left-color: var(--success);}
.theme-dark-mode #tool-body .panel-content {border-color: #333;}
.theme-dark-mode #tool-body .common-action-area{border-color: #383838;}
.theme-dark-mode #tool-body .adv-toggle{color: #999;}
.theme-dark-mode #tool-body .format-picker label{color: #999;}
.theme-dark-mode #tool-body .adv-toggle:hover {
  background: #333;
}
.theme-dark-mode .layui-slider { background: #444; }
.theme-dark-mode .layui-slider-wrap-btn { border-color: #666; background: #333; }

.theme-dark-mode #tool-body .output-area,
.theme-dark-mode #tool-body .output-item {
  border-color: #444;
}
.theme-dark-mode #tool-body .tag-dest {
  background: #ffefb9;
  color: #d6a306;
  border: 0;
}
.theme-dark-mode #tool-body .tag-saved {
  background: #16baaa;
  color: #fff;
  border: 0;
}
.theme-dark-mode #tool-body .tag-magnify {
  background: #ffb800;
  color: #333;
  border: 0;
}