:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1f2328;
  --text-dim: #6b7280;
  --border: #e3e6ea;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --radius: 12px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181d;
    --card: #1e2128;
    --text: #e6e8eb;
    --text-dim: #9aa3af;
    --border: #2c3038;
    --accent: #4f8ef7;
    --accent-hover: #6ba0f9;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* 头部 */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0.7rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  font-size: 1.05rem;
}
.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 0.8rem;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* 布局 */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.25rem;
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}
.card-header h2 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}
.card-actions { display: flex; gap: 0.35rem; }

/* 图标 */
.icon {
  width: 1em;
  height: 1em;
  vertical-align: -0.125em;
  flex-shrink: 0;
}
.btn-icon .icon { width: 16px; height: 16px; }
.btn-sm .icon { width: 14px; height: 14px; }
.file .cancel .icon {
  width: 12px;
  height: 12px;
}
#maskText .icon { width: 1.1em; height: 1.1em; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  color: var(--text);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); color: #fff; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.88; color: #fff; }
.btn-ghost { border-color: transparent; background: transparent; color: var(--text-dim); }
.btn-ghost:hover { background: var(--bg); color: var(--text); border-color: transparent; }
.btn-icon { width: 32px; padding: 0.45rem 0; font-size: 0.9rem; }
.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.78rem; }

/* 输入 */
.input, .select {
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.15s ease;
}
.input { flex: 1; font-family: var(--mono); }
.input:focus, .select:focus { border-color: var(--accent); }
.select { min-width: 12rem; }
.lang-select {
  min-width: auto;
  width: 6.5rem;
  padding: 0.35rem 0.5rem;
  font-size: 0.8rem;
  background: var(--card);
  cursor: pointer;
}

/* 设置 */
.check-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 0;
  font-size: 0.88rem;
  cursor: pointer;
}
.check-row input { accent-color: var(--accent); }

/* 播放器 */
.player {
  position: relative;
  background: #000;
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
}
.player video {
  width: 100%;
  aspect-ratio: 16/9;
  display: block;
  background: #000;
}
.player-center {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.25);
  z-index: 2;
}
.player-osd {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.8rem;
  background: rgba(0, 0, 0, 0.72);
  border-radius: 8px;
  color: #fff;
  font-size: 0.85rem;
  font-family: var(--mono);
  pointer-events: none;
  white-space: nowrap;
  user-select: none;
}
.player-osd .icon { width: 18px; height: 18px; }
.player-btn-big {
  width: 68px;
  height: 68px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  color: #111;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease;
}
.player-btn-big .icon { width: 30px; height: 30px; margin-left: 3px; }
.player-btn-big:hover { transform: scale(1.08); }
.player-controls {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  padding: 2rem 0.7rem 0.45rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.82), rgba(0, 0, 0, 0.35) 60%, transparent);
  opacity: 0;
  transition: opacity 0.2s ease;
}
.player:hover .player-controls,
.player.paused .player-controls,
.player-controls:hover { opacity: 1; }
.player-row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}
.player-row + .player-row { margin-top: 0.35rem; }
.player-progress {
  flex: 1;
  cursor: pointer;
  padding: 6px 0;
  position: relative;
}
.player-progress-tip {
  position: absolute;
  bottom: 100%;
  left: 0;
  transform: translateX(-50%);
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.82);
  color: #fff;
  font-size: 0.7rem;
  font-family: var(--mono);
  pointer-events: none;
  white-space: nowrap;
  user-select: none;
}
.player-progress-track {
  position: relative;
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.25);
}
.player-progress-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0;
  border-radius: 2px;
  background: var(--accent);
}
.player-progress-buffer {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.35);
}
.player-progress-thumb {
  position: absolute;
  top: 50%;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  transform: translate(-50%, -50%) scale(0);
  transition: transform 0.15s ease;
}
.player-progress:hover .player-progress-thumb,
.player-progress.dragging .player-progress-thumb { transform: translate(-50%, -50%) scale(1); }
.player-time {
  font-size: 0.75rem;
  color: #fff;
  font-family: var(--mono);
  white-space: nowrap;
  user-select: none;
}
.player-buttons { flex-wrap: nowrap; }
.player-btn {
  position: relative;
  border: none;
  background: transparent;
  color: #fff;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  opacity: 0.85;
  transition: opacity 0.15s ease;
  font-size: 0.72rem;
  font-family: inherit;
}
.player-btn:hover { opacity: 1; }
.player-btn.active { color: var(--accent); }
.player-btn .icon { width: 17px; height: 17px; }
.player-btn .player-tip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 9px;
  border-radius: 5px;
  background: rgba(0, 0, 0, 0.88);
  color: #fff;
  font-size: 0.72rem;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease 0.4s;
  z-index: 7;
}
.player-btn .player-tip::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: rgba(0, 0, 0, 0.88);
}
.player-btn:hover .player-tip { opacity: 1; }
.player-volume {
  width: 70px;
  accent-color: var(--accent);
  cursor: pointer;
}
.player-speed {
  border: none;
  background: transparent;
  color: #fff;
  font-size: 0.75rem;
  cursor: pointer;
  outline: none;
}
.player-speed option { color: #111; }
.player-spacer { flex: 1; }

/* 网页全屏 */
.player.web-fullscreen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  border-radius: 0;
}
.player.web-fullscreen video {
  height: 100%;
  aspect-ratio: auto;
  object-fit: contain;
}
.player.web-fullscreen .player-controls { padding-bottom: 0.8rem; }
.tip {
  margin-top: 0.6rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.6;
}

/* 文件区 */
.drop-zone {
  border: 2px dashed var(--border);
  text-align: center;
  padding: 2.2rem 1rem;
  transition: all 0.2s ease;
  cursor: pointer;
}
.drop-zone:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 4%, var(--card));
}
.drop-zone.over {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 6%, var(--card));
}
.drop-text { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 0.9rem; }
#media {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.file {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  max-width: 100%;
  padding: 0.35rem 0.5rem 0.35rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  font-size: 0.82rem;
  transition: all 0.15s ease;
  cursor: grab;
}
.file:active { cursor: grabbing; }
.file.dragging {
  opacity: 0.45;
  border-style: dashed;
  border-color: var(--accent);
}
.file:hover { border-color: var(--accent); }
.file-btn {
  background: none;
  border: none;
  color: var(--text);
  font-size: 0.82rem;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 22rem;
  padding: 0;
}
.file-btn.is-primary { color: var(--accent); font-weight: 600; }
.file .cancel {
  flex-shrink: 0;
  border: none;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.8rem;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  line-height: 1;
  transition: all 0.15s ease;
}
.file .cancel:hover { background: var(--danger); color: #fff; }
.file-size { color: var(--text-dim); font-size: 0.72rem; }

/* 操作区 */
.cmd-row { display: flex; gap: 0.4rem; margin-bottom: 0.75rem; }
.run-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.spacer { flex: 1; }

/* 控制台 */
.console {
  height: 24vh;
  min-height: 180px;
  overflow: auto;
  padding: 0.7rem 0.85rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.7;
  word-break: break-all;
}
.console .primary { color: var(--accent); }
.console .success { color: var(--success); }
.console .error { color: var(--danger); }
.console .logImg { max-width: 100%; border-radius: 6px; margin: 0.25rem 0; }

/* 拖拽遮罩 */
#mask {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(0, 0, 0, 0.45);
  pointer-events: none;
}
#maskText {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1000;
  padding: 1.2rem 2.2rem;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  font-size: 1.1rem;
  font-weight: 600;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  pointer-events: none;
}

/* 右键菜单 */
#contextMenu {
  position: fixed;
  z-index: 1001;
  min-width: 150px;
  padding: 0.3rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}
#contextMenu ul { list-style: none; }
#contextMenu li {
  padding: 0.45rem 0.8rem;
  border-radius: 6px;
  font-size: 0.84rem;
  cursor: pointer;
}
#contextMenu li:hover { background: var(--bg); color: var(--accent); }

/* 弹窗 */
dialog {
  border: none;
  border-radius: var(--radius);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
  background: var(--card);
  color: var(--text);
  padding: 1.4rem;
  max-width: 420px;
}
dialog::backdrop { background: rgba(0, 0, 0, 0.4); }
.dialog-title { font-weight: 600; margin-bottom: 0.6rem; }
#dialog-text { font-size: 0.88rem; color: var(--text-dim); line-height: 1.6; }
.dialog-menu {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1.1rem;
}

.hide { display: none !important; }