/* ===== 视频转文字 /tools/video_to_text =====
   站点规范：/tools 工具根容器不加 max-width / margin:0 auto（由 body[data-page="tools"] .app 统一全宽）。
   本文件只负责本工具内部的排版与响应式；电脑端随内容区满屏，并保留左侧导航栏。 */

.vt-app {
    max-width: none;
    margin: 0;
    padding: 28px 24px 64px;
    box-sizing: border-box;
}

/* hero */
.vt-hero { text-align: center; padding: 8px 0 26px; max-width: 1040px; margin: 0 auto; }
.vt-hero h1 { font-size: 30px; margin: 0 0 10px; font-weight: 700; letter-spacing: .5px; }
.vt-hero-sub { margin: 0 auto; max-width: 640px; color: var(--text-secondary); font-size: 15px; line-height: 1.7; }
.vt-badges { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 16px; }
.vt-badge {
    font-size: 12.5px; color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent);
    border-radius: 999px; padding: 5px 12px; white-space: nowrap;
}

/* 上传区 */
.vt-drop {
    background: var(--bg-primary); border: 1px solid var(--border); border-radius: 16px;
    padding: 22px; box-shadow: 0 2px 16px rgba(0,0,0,.05); text-align: center;
}
.vt-drop-inner {
    border: 2px dashed color-mix(in srgb, var(--accent) 45%, var(--border));
    border-radius: 14px; padding: 44px 18px; max-width: 720px; margin: 0 auto; transition: background .2s, border-color .2s, transform .2s;
}
.vt-drop.dragover .vt-drop-inner { background: color-mix(in srgb, var(--accent) 10%, transparent); border-color: var(--accent); transform: scale(1.005); }
.vt-drop-icon { font-size: 46px; line-height: 1; margin-bottom: 12px; }
.vt-drop-title { font-size: 16px; margin: 0 0 8px; }
.vt-drop-sub { font-size: 12.5px; color: var(--text-secondary); margin: 0; opacity: .9; }
.vt-link-btn { background: none; border: none; color: var(--accent); cursor: pointer; font: inherit; padding: 0; text-decoration: underline; }

/* 链接添加 */
.vt-url-wrap { margin: 20px auto 0; max-width: 720px; padding-top: 18px; border-top: 1px dashed var(--border); text-align: left; }
.vt-url-row { display: flex; gap: 8px; align-items: stretch; }
.vt-url-input {
    flex: 1 1 auto; min-width: 0; border: 1px solid var(--border); background: var(--bg-primary); color: var(--text-primary);
    border-radius: 9px; padding: 9px 11px; font-size: 14px; font-family: inherit; outline: none;
}
.vt-url-input:focus { border-color: var(--accent); }
.vt-url-row .vt-btn { flex: 0 0 auto; white-space: nowrap; }
.vt-url-name { display: block; margin-top: 8px; font-size: 12.5px; color: var(--text-secondary); word-break: break-all; }
.vt-url-name.is-ok { color: var(--accent); }
.vt-url-tip { margin-top: 8px; font-size: 12px; line-height: 1.7; color: var(--text-secondary); }

/* 按钮 */
.vt-btn {
    border: 1px solid var(--border); background: var(--bg-primary); color: var(--text-primary);
    border-radius: 9px; padding: 9px 16px; font-size: 14px; font-family: inherit; cursor: pointer; transition: .15s;
}
.vt-btn:hover { border-color: var(--accent); }
.vt-btn:disabled { opacity: .55; cursor: not-allowed; }
.vt-btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; box-shadow: 0 2px 10px color-mix(in srgb, var(--accent) 35%, transparent); }
.vt-btn-primary:hover { filter: brightness(1.05); box-shadow: 0 4px 14px color-mix(in srgb, var(--accent) 45%, transparent); }
.vt-btn-ghost { background: transparent; }
.vt-btn-sm { padding: 6px 11px; font-size: 13px; }

/* 工作区：默认单栏；出现结果后（宽屏下）左右分栏（左控制 / 右字幕）。
   分栏仅在宽屏生效，手机/小平板仍单列堆叠，避免右栏被压成极窄。 */
.vt-work { margin-top: 0; }
.vt-work-grid { display: grid; grid-template-columns: 1fr; gap: 24px; align-items: start; }
.vt-work-left { min-width: 0; }
.vt-work-right { min-width: 0; }
@media (min-width: 1080px) {
    .vt-work.vt-split .vt-work-grid { grid-template-columns: minmax(280px, 340px) 1fr; }
}

.vt-filebar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 8px 0 16px; flex-wrap: wrap; }
.vt-file-meta { display: flex; flex-direction: column; min-width: 0; }
.vt-file-name { font-weight: 600; font-size: 15px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.vt-file-info { font-size: 12.5px; color: var(--text-secondary); }

.vt-player { margin-bottom: 16px; }
.vt-player audio { width: 100%; display: block; }

.vt-settings { display: flex; gap: 14px 18px; flex-wrap: wrap; margin-bottom: 16px; }
.vt-field { display: flex; flex-direction: column; gap: 6px; }
.vt-field label { font-size: 12.5px; color: var(--text-secondary); }
.vt-select {
    border: 1px solid var(--border); background: var(--bg-primary); color: var(--text-primary);
    border-radius: 9px; padding: 9px 10px; font-size: 14px; font-family: inherit; min-width: 180px; outline: none;
}
.vt-select:focus { border-color: var(--accent); }

.vt-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.vt-status { font-size: 13px; color: var(--text-secondary); }
.vt-status.is-err { color: #e04646; }

/* 进度 */
.vt-progress { margin: 18px 0; }
.vt-progress-bar { height: 8px; background: color-mix(in srgb, var(--accent) 18%, transparent); border-radius: 999px; overflow: hidden; }
.vt-progress-bar span { display: block; height: 100%; width: 0; background: var(--accent); border-radius: 999px; transition: width .2s; }
.vt-progress-text { margin-top: 8px; font-size: 12.5px; color: var(--text-secondary); }

/* 结果 */
.vt-result { margin-top: 0; }
.vt-result-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.vt-result-head h2 { font-size: 18px; margin: 0; }
.vt-detected {
    font-size: 12.5px; color: var(--text-secondary);
    background: color-mix(in srgb, var(--accent) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
    border-radius: 999px; padding: 4px 10px;
}
.vt-detected[hidden] { display: none; }
.vt-export { display: flex; gap: 8px; flex-wrap: wrap; }
/* 字幕列表：默认单列；超宽屏下在右栏内自动多列流式排布，充分利用满屏宽度 */
.vt-segments { display: block; columns: 1; }
.vt-seg {
    display: flex; gap: 12px; padding: 12px 14px; border: 1px solid var(--border); border-radius: 12px;
    background: var(--bg-primary); align-items: flex-start; margin-bottom: 10px; break-inside: avoid;
}
.vt-seg-time { flex: 0 0 auto; font-variant-numeric: tabular-nums; font-size: 12.5px; color: var(--accent); font-weight: 600; padding-top: 3px; min-width: 84px; cursor: pointer; user-select: none; }
.vt-seg-time:hover { text-decoration: underline; }
.vt-seg-text {
    flex: 1 1 auto; border: none; background: transparent; color: var(--text-primary); resize: vertical;
    font: inherit; font-size: 14px; line-height: 1.7; min-height: 24px; outline: none; width: 100%;
}
.vt-seg-text:focus { background: color-mix(in srgb, var(--accent) 6%, transparent); border-radius: 6px; }

/* FAQ */
.vt-faq { margin: 30px auto 0; max-width: 1040px; }
.vt-faq summary { cursor: pointer; color: var(--accent); font-size: 14px; padding: 10px 0; }
.vt-faq ul { margin: 6px 0 0; padding-left: 20px; color: var(--text-secondary); font-size: 13px; line-height: 1.9; }
.vt-faq li { margin-bottom: 4px; }

/* ===== 响应式 ===== */

/* 超宽屏：字幕在右栏内分两列 */
@media (min-width: 1500px) {
    .vt-work.vt-split .vt-segments { columns: 2; column-gap: 18px; }
}

/* 平板：设置项两列排布，其余沿用单栏 */
@media (max-width: 1079px) {
    .vt-app { padding: 24px 18px 56px; }
    .vt-hero { padding: 8px 0 22px; }
    .vt-hero h1 { font-size: 27px; }
    .vt-settings .vt-field { flex: 1 1 calc(50% - 9px); }
    .vt-select { width: 100%; }
}

/* 手机：整体纵向堆叠，控件与字幕全宽，输入框 16px 防 iOS 聚焦缩放 */
@media (max-width: 640px) {
    .vt-app { padding: 18px 12px 48px; }
    .vt-hero h1 { font-size: 23px; }
    .vt-hero-sub { font-size: 14px; }
    .vt-drop { padding: 16px; }
    .vt-drop-inner { padding: 32px 14px; }
    .vt-url-row { flex-direction: column; }
    .vt-url-row .vt-btn { width: 100%; }
    .vt-settings { flex-direction: column; gap: 12px; }
    .vt-settings .vt-field { flex: 1 1 100%; }
    .vt-select { width: 100%; }
    .vt-url-input { font-size: 16px; }
    .vt-seg { flex-direction: column; gap: 6px; }
    .vt-seg-time { min-width: 0; }
    .vt-actions { gap: 10px; }
}