/* 在线屏幕录制 /tools/screen-recorder —— class 前缀 sr-
   设计系统：沿用站点主题变量（自动适配深/浅色），统一间距 / 圆角 / 字号 / 层级，
   电脑端双栏工作区、平板端单栏、手机端大触控区 + 底部安全区适配。 */
.sr {
    /* 组件级设计变量：间距、圆角、描边与语义色 */
    --sr-r: 16px;            /* 大容器圆角 */
    --sr-r-sm: 10px;         /* 控件圆角 */
    --sr-r-xs: 8px;          /* 小元素圆角 */
    --sr-gap: 16px;          /* 区块间距 */
    --sr-pad: 16px;          /* 容器内边距 */
    --sr-line: 1px solid var(--border-color);
    --sr-muted: var(--text-secondary);
    --sr-ok: #15803d;
    --sr-rec: var(--danger);

    width: 100%;
    box-sizing: border-box;
    /* 电脑端满屏（站点规范）：/tools/* 页面由 header.php 注入 body.tools-page，
       style.css 已解除 .app / .main-content 的限宽；根容器这里不能再写
       max-width / margin:0 auto，否则会被重新收成居中窄列。左侧导航保留。 */
    padding: clamp(14px, 2vw, 24px) clamp(14px, 2.4vw, 28px) clamp(28px, 4vw, 44px);
    display: flex;
    flex-direction: column;
    gap: var(--sr-gap);
}
/* 兜底：若某处主题未带上 tools-page 标记，也保证录屏工作区占满主区 */
body.tools-page .sr,
body[data-page="tools"] .sr {
    max-width: 100%;
    width: 100%;
    margin: 0;
}

/* ===== 头部：标题层级（字号随视口平滑缩放） ===== */
.sr-hero { display: flex; align-items: flex-start; gap: 14px; }
.sr-hero-txt { flex: 1 1 auto; min-width: 0; }
.sr-title {
    margin: 0 0 6px;
    font-size: clamp(19px, 1.1vw + 14px, 25px);
    line-height: 1.3; font-weight: 800; letter-spacing: -.2px;
    color: var(--text-primary);
}
.sr-sub {
    margin: 0; max-width: 68ch;
    font-size: clamp(12.5px, .3vw + 12px, 14px); line-height: 1.65;
    color: var(--text-secondary);
}
.sr-icon-btn {
    flex: 0 0 auto; width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
    border: var(--sr-line); border-radius: var(--sr-r-sm);
    background: var(--bg-secondary); color: var(--text-secondary); cursor: pointer; transition: all .15s;
}
.sr-icon-btn:hover { color: var(--accent); border-color: var(--accent); }

/* ===== 提示条 ===== */
.sr-note {
    margin: 0; padding: 10px 14px; border-radius: var(--sr-r-sm);
    font-size: 13px; line-height: 1.65; text-align: center;
    border: var(--sr-line); background: var(--bg-secondary); color: var(--text-secondary);
}
.sr-note[hidden] { display: none !important; }
.sr-note.is-err { color: var(--danger); border-color: var(--danger); text-align: left; }
.sr-note.is-ok { color: var(--sr-ok); border-color: #86efac; }

/* ===== 录制台：电脑端双栏（主区 + 设置侧栏） ===== */
.sr-stage {
    border: var(--sr-line); border-radius: var(--sr-r); background: var(--bg-secondary);
    padding: var(--sr-pad); display: flex; flex-direction: column; gap: 14px;
}
.sr-stage-grid {
    display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 18px; align-items: start;
}
.sr-stage-main { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.sr-stage-side {
    display: flex; flex-direction: column; gap: 12px; min-width: 0;
    padding-left: 18px; border-left: var(--sr-line);
}
.sr-side-title {
    margin: 0; font-size: 13.5px; font-weight: 800; letter-spacing: .2px; color: var(--text-primary);
    display: flex; align-items: center; gap: 8px;
}
.sr-side-title::before {
    content: ''; width: 3px; height: 13px; border-radius: 2px; background: var(--accent);
}

/* 开关行 */
.sr-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 18px; }
.sr-sw {
    display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
    font-size: 13.5px; color: var(--text-primary); user-select: none;
    padding: 6px 10px; border-radius: 999px; border: var(--sr-line); background: var(--bg-primary);
    transition: border-color .15s, background .15s;
}
.sr-sw:hover { border-color: var(--accent); }
.sr-sw input { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; margin: 0; }
.sr-sw.is-dis { opacity: .5; cursor: not-allowed; }

/* ===== 按钮：统一最小高度与触控区 ===== */
.sr-btns { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.sr-btn {
    min-height: 40px; padding: 9px 16px;
    font-size: 14px; font-weight: 600; font-family: inherit; border-radius: var(--sr-r-sm);
    border: var(--sr-line); background: var(--bg-primary); color: var(--text-primary);
    cursor: pointer; transition: background .15s, border-color .15s, color .15s, transform .12s;
}
.sr-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.sr-btn:active:not(:disabled) { transform: translateY(1px); }
.sr-btn:disabled { opacity: .45; cursor: not-allowed; }
.sr-btn-sm { min-height: 32px; padding: 5px 11px; font-size: 12.5px; border-radius: var(--sr-r-xs); }
.sr-btn-go { background: var(--accent); border-color: var(--accent); color: #fff; }
.sr-btn-go:hover:not(:disabled) { color: #fff; filter: brightness(1.08); }
.sr-btn-rec { background: var(--sr-rec); border-color: var(--sr-rec); color: #fff; }
.sr-btn-rec:hover:not(:disabled) { color: #fff; filter: brightness(1.08); }
.sr-btn-danger { color: var(--danger); border-color: var(--danger); }
.sr-btn-ghost { background: transparent; }
.sr-btn .sr-dot { display: inline-block; width: 9px; height: 9px; margin-right: 6px; border-radius: 50%; background: currentColor; }

/* ===== 预览区（16:9 黑底，超宽屏限制高度避免过高） ===== */
.sr-view {
    position: relative; aspect-ratio: 16 / 9; width: 100%;
    max-width: min(100%, calc(60vh * 16 / 9));   /* 视口高时限制预览高度，保证控制区同屏可见 */
    margin: 0 auto;
    border-radius: var(--sr-r-sm); overflow: hidden;
    background: #000; border: var(--sr-line);
}
.sr-video { display: block; width: 100%; height: 100%; object-fit: contain; background: #000; }
.sr-cam { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

.sr-empty {
    position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 8px; padding: 20px; color: #9ca3af; font-size: clamp(12.5px, .4vw + 11px, 14.5px); text-align: center;
}
.sr-empty[hidden] { display: none !important; }
.sr-empty svg { width: clamp(40px, 6vw, 60px); height: clamp(40px, 6vw, 60px); opacity: .5; }
.sr-empty-tip { margin: 0; max-width: 42ch; font-size: 12.5px; line-height: 1.6; color: #7b8794; }

/* 录制中 HUD */
.sr-hud {
    position: absolute; top: 10px; left: 10px; display: inline-flex; align-items: center; gap: 8px;
    padding: 5px 11px; border-radius: 999px;
    background: rgba(0, 0, 0, .62); color: #fff;
    font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: .3px;
    pointer-events: none;
}
.sr-hud[hidden] { display: none !important; }
.sr-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--sr-rec); }
.sr-hud.is-rec .sr-dot { animation: sr-pulse 1.2s ease-in-out infinite; }
.sr-hud.is-pause .sr-dot { background: #f59e0b; animation: none; }
@keyframes sr-pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .35; transform: scale(.8); } }

/* 倒计时 */
.sr-count {
    position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 10px; background: rgba(0, 0, 0, .55); color: #fff;
}
.sr-count[hidden] { display: none !important; }
.sr-count-num { font-size: clamp(48px, 8vw, 76px); font-weight: 800; font-variant-numeric: tabular-nums; line-height: 1; }
.sr-count-tip { font-size: 13px; opacity: .85; }

.sr-pausemask {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
    background: rgba(0, 0, 0, .5); color: #fff; font-size: 15px; font-weight: 700; letter-spacing: 1px;
}
.sr-pausemask[hidden] { display: none !important; }

.sr-src {
    position: absolute; right: 10px; bottom: 10px; max-width: 60%;
    padding: 4px 10px; border-radius: 999px; background: rgba(0, 0, 0, .62); color: #fff;
    font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; pointer-events: none;
}
.sr-src[hidden] { display: none !important; }

/* ===== 设置面板 ===== */
.sr-adv { display: grid; grid-template-columns: 1fr; gap: 12px; }
.sr-adv[hidden] { display: none !important; }
.sr-field { display: flex; flex-direction: column; gap: 6px; font-size: 12.5px; color: var(--text-secondary); }
.sr-field > span { font-weight: 600; color: var(--text-primary); }
.sr-select, .sr-input {
    min-height: 36px; padding: 7px 10px; font-size: 13px; font-family: inherit; border-radius: var(--sr-r-xs);
    border: var(--sr-line); background: var(--bg-primary); color: var(--text-primary);
    width: 100%; box-sizing: border-box;
}
.sr-select:focus-visible, .sr-input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.sr-adv-toggle {
    align-self: flex-start; background: none; border: none; font-family: inherit; font-size: 13px;
    color: var(--accent); cursor: pointer; padding: 4px 2px; min-height: 32px;
}
.sr-tip { margin: 0; font-size: 12.5px; line-height: 1.7; color: var(--text-secondary); }

/* ===== 结果条 ===== */
.sr-done {
    display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
    padding: 11px 13px; border-radius: var(--sr-r-sm);
    border: 1px solid var(--accent); background: var(--bg-primary);
}
.sr-done[hidden] { display: none !important; }
.sr-done-name { font-size: 14px; font-weight: 700; color: var(--text-primary); word-break: break-all; }
.sr-done-meta { font-size: 12.5px; color: var(--text-secondary); }
.sr-flex1 { flex: 1 1 auto; }

/* ===== 最近录屏 ===== */
.sr-lib { display: flex; flex-direction: column; gap: 12px; }
.sr-lib-head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.sr-lib-title { margin: 0; font-size: clamp(15px, .5vw + 13px, 17px); font-weight: 800; color: var(--text-primary); }
.sr-lib-count { font-size: 12.5px; font-weight: 600; color: var(--text-secondary); }
.sr-lib-tools { display: flex; flex-wrap: wrap; gap: 8px; margin-left: auto; }
.sr-search { min-width: 170px; width: auto; }

.sr-selbar {
    display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
    padding: 8px 12px; border-radius: var(--sr-r-sm);
    border: 1px solid var(--accent); background: var(--bg-secondary);
}
.sr-selbar[hidden] { display: none !important; }
.sr-selall { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; cursor: pointer; }
.sr-selcount { font-size: 12.5px; color: var(--text-secondary); }

.sr-stats { margin: 0; font-size: 12.5px; color: var(--text-secondary); }

.sr-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(248px, 1fr)); gap: 12px; }
.sr-card {
    position: relative; border: var(--sr-line); border-radius: var(--sr-r-sm); overflow: hidden;
    background: var(--bg-secondary); display: flex; flex-direction: column;
    transition: border-color .15s, transform .12s, box-shadow .15s;
}
.sr-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.sr-card.is-sel { border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 26%, transparent); }
.sr-thumb {
    position: relative; aspect-ratio: 16 / 9; width: 100%; background: #000; cursor: pointer;
    display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.sr-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.sr-thumb-play {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 26px; background: rgba(0, 0, 0, .28); opacity: 0; transition: opacity .15s;
}
.sr-thumb:hover .sr-thumb-play { opacity: 1; }
.sr-thumb-dur {
    position: absolute; right: 6px; bottom: 6px; padding: 1px 6px; border-radius: 6px;
    background: rgba(0, 0, 0, .72); color: #fff; font-size: 11.5px; font-variant-numeric: tabular-nums;
}
.sr-card-body { padding: 10px 11px; display: flex; flex-direction: column; gap: 6px; }
.sr-card-name {
    font-size: 13.5px; font-weight: 700; color: var(--text-primary);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.sr-card-meta { font-size: 12px; color: var(--text-secondary); display: flex; gap: 8px; flex-wrap: wrap; }
.sr-card-ops { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px; }
.sr-selcb { position: absolute; top: 8px; left: 8px; width: 18px; height: 18px; accent-color: var(--accent); z-index: 2; cursor: pointer; }
.sr-fav {
    position: absolute; top: 6px; right: 6px; min-width: 30px; height: 30px; border-radius: 50%; border: none;
    background: rgba(0, 0, 0, .55); color: #fff; font-size: 14px; cursor: pointer; z-index: 2;
}
.sr-fav.on { color: #fbbf24; }

.sr-empty2 {
    padding: 26px 16px; text-align: center; font-size: 13px; color: var(--text-secondary);
    border: 1px dashed var(--border-color); border-radius: var(--sr-r-sm);
}
.sr-empty2[hidden] { display: none !important; }
.sr-undo { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-secondary); }
.sr-undo[hidden] { display: none !important; }

/* ===== 底部播放器 ===== */
.sr-player {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 9000;
    display: flex; align-items: center; gap: 10px; padding: 9px 14px;
    background: var(--bg-secondary); border-top: var(--sr-line);
    padding-bottom: calc(9px + env(safe-area-inset-bottom));
}
.sr-player[hidden] { display: none !important; }
.sr-pbtn {
    width: 38px; height: 38px; flex: 0 0 auto; border-radius: var(--sr-r-xs); cursor: pointer;
    border: var(--sr-line); background: var(--bg-primary); color: var(--text-primary); font-size: 14px;
}
.sr-pname { font-size: 13px; font-weight: 600; color: var(--text-primary); max-width: 190px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sr-seek { flex: 1 1 auto; min-width: 90px; accent-color: var(--accent); }
.sr-ptime { font-size: 12.5px; color: var(--text-secondary); font-variant-numeric: tabular-nums; }
.sr-rate { padding: 4px 6px; font-size: 12.5px; }

/* ===== 弹窗 ===== */
.sr-mask {
    position: fixed; inset: 0; z-index: 100000; display: flex; align-items: center; justify-content: center;
    padding: 18px; background: rgba(0, 0, 0, .45);
}
.sr-mask[hidden] { display: none !important; }
.sr-modal {
    width: 100%; max-width: 480px; max-height: 88vh; overflow: auto;
    border-radius: var(--sr-r); border: var(--sr-line); background: var(--bg-primary);
    display: flex; flex-direction: column;
}
.sr-modal-head { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: var(--sr-line); }
.sr-modal-head h3 { margin: 0; font-size: 15.5px; font-weight: 800; color: var(--text-primary); flex: 1; }
.sr-modal-body { padding: 14px 16px; display: flex; flex-direction: column; gap: 11px; }
.sr-modal-foot { display: flex; align-items: center; gap: 9px; padding: 12px 16px; border-top: var(--sr-line); }
.sr-modal-tip { margin: 0; font-size: 13px; color: var(--text-secondary); }
.sr-set-row { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-primary); }
.sr-set-row > span { flex: 0 0 96px; color: var(--text-secondary); }
.sr-set-row.is-col { flex-direction: column; align-items: stretch; }
.sr-set-row.is-col > span { flex: none; }
.sr-set-row .sr-select, .sr-set-row .sr-input { flex: 1 1 auto; min-width: 0; }
.sr-set-tip { margin: 0; font-size: 12.5px; line-height: 1.7; color: var(--text-secondary); }
.sr-prog { padding: 9px 12px; border-radius: var(--sr-r-xs); background: var(--bg-secondary); font-size: 13px; color: var(--text-secondary); }
.sr-prog[hidden] { display: none !important; }
.sr-result { padding: 9px 12px; border-radius: var(--sr-r-xs); font-size: 13px; line-height: 1.7; border: var(--sr-line); }
.sr-result[hidden] { display: none !important; }
.sr-result.is-ok { color: var(--sr-ok); border-color: #86efac; background: #f0fdf4; }
.sr-result.is-err { color: var(--danger); border-color: var(--danger); background: var(--bg-secondary); }
.sr-result a { color: var(--accent); }

/* ===== 关于 / 功能特点 ===== */
.sr-about { border: var(--sr-line); border-radius: var(--sr-r); background: var(--bg-secondary); padding: 16px 18px; }
.sr-about h2 { margin: 0 0 8px; font-size: 16px; font-weight: 800; color: var(--text-primary); }
.sr-about p { margin: 0; max-width: 82ch; font-size: 13.5px; line-height: 1.8; color: var(--text-secondary); }
.sr-feats { margin: 14px 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 8px 18px; }
.sr-feats li { font-size: 13px; line-height: 1.7; color: var(--text-secondary); }
.sr-feats b { color: var(--text-primary); font-weight: 700; }
.sr-kbd { margin: 0; font-size: 12.5px; color: var(--text-secondary); }
.sr-kbd kbd {
    display: inline-block; padding: 1px 6px; margin: 0 2px; border-radius: 5px; font-size: 12px;
    border: var(--sr-line); background: var(--bg-primary); color: var(--text-primary);
}

/* ===== 键盘可达性：统一焦点环 ===== */
.sr-btn:focus-visible, .sr-icon-btn:focus-visible, .sr-adv-toggle:focus-visible,
.sr-pbtn:focus-visible, .sr-fav:focus-visible, .sr-card:focus-visible {
    outline: 2px solid var(--accent); outline-offset: 2px;
}

/* ===== 触屏设备：去掉粘滞 hover，改用按下反馈 ===== */
@media (hover: none) {
    .sr-card:hover { transform: none; border-color: var(--border-color); }
    .sr-thumb-play { opacity: 1; background: rgba(0, 0, 0, .18); }
}

/* ===== 平板（≤991px）：单栏，设置改为可折叠 ===== */
@media (max-width: 991px) {
    .sr { --sr-gap: 14px; }
    .sr-stage-grid { grid-template-columns: 1fr; gap: 14px; }
    .sr-stage-side { padding-left: 0; border-left: none; padding-top: 14px; border-top: var(--sr-line); }
    .sr-adv { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
    .sr-view { max-width: 100%; }
    .sr-list { grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); }
    .sr-lib-tools { margin-left: 0; }
}

/* ===== 手机（≤767px）：大触控区、单列、底部安全区 ===== */
@media (max-width: 767px) {
    .sr { padding: 12px 12px calc(26px + env(safe-area-inset-bottom)); }
    .sr-hero { gap: 10px; }
    .sr-icon-btn { width: 36px; height: 36px; }
    .sr-stage { padding: 12px; border-radius: 14px; }

    /* 主按钮整行铺满、触控高度 ≥46px */
    .sr-btns { gap: 8px; }
    .sr-btns .sr-btn { flex: 1 1 auto; min-width: 44%; min-height: 46px; justify-content: center; font-size: 14.5px; }
    .sr-btns .sr-btn-sm { min-height: 40px; }

    /* 开关更大更好点 */
    .sr-sw { padding: 9px 12px; font-size: 14px; min-height: 44px; }

    /* 表单 16px 防 iOS 自动缩放 */
    .sr-input, .sr-select { font-size: 16px; min-height: 44px; }
    .sr-select:focus-visible, .sr-input:focus-visible { outline-offset: 0; }

    .sr-lib-head { gap: 8px; }
    .sr-lib-tools { width: 100%; }
    .sr-search { flex: 1 1 150px; min-width: 0; }
    .sr-list { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
    .sr-card-ops { gap: 5px; }

    /* 弹窗改为底部抽屉，拇指可达 */
    .sr-modal { max-width: none; border-radius: 18px 18px 0 0; align-self: flex-end; max-height: 92vh; }
    .sr-mask { padding: 0; align-items: flex-end; }
    .sr-modal-foot { padding-bottom: calc(12px + env(safe-area-inset-bottom)); }

    .sr-player { gap: 8px; padding: 8px 10px; }
    .sr-pname { max-width: 96px; }
    .sr-rate { display: none; }
    .sr-about { padding: 14px; }
}

/* ===== 小屏手机（≤560px）：彻底单列 ===== */
@media (max-width: 560px) {
    .sr-list { grid-template-columns: 1fr; }
    .sr-adv { grid-template-columns: 1fr; }
    .sr-btns .sr-btn { min-width: 100%; }
    .sr-count-num { font-size: 52px; }
    .sr-feats { grid-template-columns: 1fr; }
    .sr-done { gap: 8px; }
    .sr-lib-tools .sr-select { flex: 1 1 120px; }
}

/* ===== 电脑端：设置侧栏常驻，折叠按钮无意义（由 JS 保证默认展开） ===== */
@media (min-width: 992px) {
    .sr-adv-toggle { display: none; }
}

/* ===== 降低动效偏好 ===== */
@media (prefers-reduced-motion: reduce) {
    .sr-hud.is-rec .sr-dot { animation: none; }
    .sr-btn:active:not(:disabled) { transform: none; }
    .sr-card:hover { transform: none; }
    .sr-card, .sr-btn, .sr-sw { transition: none; }
}