/* ============================================================
   RIZ AI Vocal Tuner — 设计令牌
   克莱因蓝 × 电光橙 · DIN 风格数字字体 · 录音棚控制台气质
   ============================================================ */
:root {
    --vt-blue: #0d3bdc;
    --vt-blue-deep: #0a2fb3;
    --vt-blue-2: #2f6bff;
    --vt-accent: #ff5c1f;
    --vt-accent-deep: #e64a12;
    --vt-blue-tint: #e9eeff;
    --vt-blue-line: #c7d3fe;

    --vt-green: #0ca678;
    --vt-green-tint: #e2f8f0;
    --vt-amber: #f59f00;
    --vt-amber-tint: #fff4dd;
    --vt-red: #e5484d;
    --vt-red-tint: #fdebeb;

    --vt-bg: #edf0f6;
    --vt-panel: rgba(13, 59, 220, 0.045);
    --vt-card: #ffffff;
    --vt-card-2: #f6f8fc;
    --vt-line: #e1e6f0;
    --vt-line-strong: #cdd5e4;

    --vt-ink: #131a2a;
    --vt-ink-2: #46536b;
    --vt-ink-3: #8a94a8;

    --vt-grid: rgba(19, 26, 42, 0.035);

    --vt-shadow-1: 0 1px 2px rgba(19,26,42,.05), 0 12px 32px -20px rgba(19,26,42,.28);
    --vt-shadow-2: 0 2px 4px rgba(13,59,220,.06), 0 16px 40px -18px rgba(13,59,220,.28);
    --vt-shadow-btn: 0 6px 16px -6px rgba(13,59,220,.45);

    --vt-font-display: "DIN Alternate", "Bahnschrift", "Avenir Next Condensed", "Helvetica Neue", "Arial Narrow", sans-serif;
    --vt-font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --vt-font-mono: "SF Mono", ui-monospace, "Cascadia Mono", Menlo, Consolas, monospace;
}

[data-theme="dark"] {
    --vt-blue: #4d74ff;
    --vt-blue-deep: #3a5fe8;
    --vt-blue-2: #6b8cff;
    --vt-accent: #ff7a45;
    --vt-blue-tint: #1a2547;
    --vt-blue-line: #2c3c77;

    --vt-green: #2fbf93;
    --vt-green-tint: #12302a;
    --vt-amber: #ffb224;
    --vt-amber-tint: #332708;
    --vt-red: #ff6b6e;
    --vt-red-tint: #3a1d22;

    --vt-bg: #0b1120;
    --vt-panel: rgba(77, 116, 255, 0.06);
    --vt-card: #141d33;
    --vt-card-2: #1a2440;
    --vt-line: #25314f;
    --vt-line-strong: #33416a;

    --vt-ink: #e9eef9;
    --vt-ink-2: #a9b5cd;
    --vt-ink-3: #6b7893;

    --vt-grid: rgba(255, 255, 255, 0.028);

    --vt-shadow-1: 0 1px 2px rgba(0,0,0,.4), 0 14px 34px -20px rgba(0,0,0,.7);
    --vt-shadow-2: 0 2px 6px rgba(0,0,0,.4), 0 18px 44px -18px rgba(0,0,0,.75);
    --vt-shadow-btn: 0 6px 18px -6px rgba(77,116,255,.5);
}

/* ============================================================
   基础 & 环境背景
   ============================================================ */
.vt-wrap {
    max-width: 640px;
    margin: 0 auto;
    padding: 14px 14px calc(24px + env(safe-area-inset-bottom));
    font-family: var(--vt-font-body);
    color: var(--vt-ink-2);
    position: relative;
    z-index: 0;
    min-height: 100vh;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}
.vt-wrap::before {
    content: "";
    position: absolute;
    inset: -16px -6px 0;
    z-index: -1;
    border-radius: 0 0 28px 28px;
    background:
        radial-gradient(560px 340px at 88% -40px, rgba(13,59,220,.09), transparent 62%),
        radial-gradient(480px 320px at -60px 220px, rgba(255,92,31,.075), transparent 60%),
        linear-gradient(var(--vt-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--vt-grid) 1px, transparent 1px),
        var(--vt-panel);
    background-size: auto, auto, 30px 30px, 30px 30px, auto;
}
[data-theme="dark"] .vt-wrap::before {
    background:
        radial-gradient(560px 340px at 88% -40px, rgba(77,116,255,.14), transparent 62%),
        radial-gradient(480px 320px at -60px 220px, rgba(255,122,69,.08), transparent 60%),
        linear-gradient(var(--vt-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--vt-grid) 1px, transparent 1px),
        var(--vt-panel);
    background-size: auto, auto, 30px 30px, 30px 30px, auto;
}

/* ============================================================
   控制台头部
   ============================================================ */
.vt-appbar {
    position: sticky;
    top: 0;
    z-index: 100;
    margin: -14px -14px 14px;
    padding: 10px 16px;
    background: color-mix(in srgb, var(--vt-card) 82%, transparent);
    -webkit-backdrop-filter: blur(14px) saturate(1.4);
    backdrop-filter: blur(14px) saturate(1.4);
    border-bottom: 1px solid var(--vt-line);
}
.vt-appbar-inner {
    max-width: 640px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 12px;
}
.vt-appbar-brand { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; }
.vt-logo {
    width: 38px; height: 38px;
    border-radius: 11px;
    background: linear-gradient(145deg, var(--vt-blue) 0%, var(--vt-blue-deep) 100%);
    color: #fff;
    font-family: var(--vt-font-display);
    font-size: 16px;
    font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.28), 0 4px 10px -3px rgba(13,59,220,.5);
    flex-shrink: 0;
    letter-spacing: -0.5px;
}
.vt-appbar-text { min-width: 0; line-height: 1.15; }
.vt-appbar-text strong {
    display: block;
    font-size: 16px;
    font-weight: 800;
    color: var(--vt-ink);
    letter-spacing: .2px;
}
.vt-appbar-text span {
    display: block;
    font-family: var(--vt-font-display);
    font-size: 9.5px;
    letter-spacing: 2.5px;
    color: var(--vt-ink-3);
    margin-top: 2px;
    text-transform: uppercase;
}
.vt-appbar-actions { display: flex; align-items: center; gap: 12px; }

/* 实时电平条 */
.vt-eq { display: flex; align-items: flex-end; gap: 3px; height: 22px; }
.vt-eq i {
    width: 3.5px;
    border-radius: 2px;
    background: linear-gradient(to top, var(--vt-blue), var(--vt-accent));
    animation: vt-eq 1.1s ease-in-out infinite;
    transform-origin: bottom;
}
.vt-eq i:nth-child(1) { height: 22px; animation-delay: 0s; }
.vt-eq i:nth-child(2) { height: 22px; animation-delay: .18s; }
.vt-eq i:nth-child(3) { height: 22px; animation-delay: .36s; }
.vt-eq i:nth-child(4) { height: 22px; animation-delay: .1s; }
.vt-eq i:nth-child(5) { height: 22px; animation-delay: .28s; }
@keyframes vt-eq {
    0%, 100% { transform: scaleY(.28); }
    50% { transform: scaleY(1); }
}

/* ============================================================
   工具栏
   ============================================================ */
.vt-toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: 14px;
}

/* ============================================================
   卡片
   ============================================================ */
.vt-card {
    background: var(--vt-card);
    border: 1px solid var(--vt-line);
    border-radius: 18px;
    box-shadow: var(--vt-shadow-1);
    padding: 18px 16px;
    margin-bottom: 14px;
    transition: box-shadow .25s ease, border-color .25s ease, transform .25s ease;
    animation: vt-fade-up .45s ease both;
}
.vt-card:nth-of-type(2) { animation-delay: .05s; }
.vt-card:nth-of-type(3) { animation-delay: .1s; }
.vt-card:nth-of-type(4) { animation-delay: .15s; }
.vt-card:active { transform: scale(.997); }
.vt-card-title {
    font-size: 16.5px;
    font-weight: 800;
    color: var(--vt-ink);
    padding-bottom: 12px;
    margin-bottom: 14px;
    border-bottom: 1px solid var(--vt-line);
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: .2px;
}
@keyframes vt-fade-up {
    from { opacity: 0; transform: translateY(14px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   步骤圆点
   ============================================================ */
.vt-step-dot {
    width: 30px; height: 30px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-family: var(--vt-font-display);
    font-size: 14px;
    font-weight: 700;
    background: var(--vt-card-2);
    border: 1.5px solid var(--vt-line-strong);
    color: var(--vt-ink-3);
    transition: all .3s cubic-bezier(.34,1.56,.64,1);
    flex-shrink: 0;
    position: relative;
}
.vt-step-dot.active {
    background: var(--vt-blue);
    border-color: var(--vt-blue);
    color: #fff;
    box-shadow: 0 4px 12px -2px rgba(13,59,220,.5);
}
.vt-step-dot.active::after {
    content: "";
    position: absolute;
    inset: -5px;
    border-radius: 50%;
    border: 2px solid var(--vt-blue);
    opacity: .35;
    animation: vt-ring 1.8s ease-out infinite;
}
@keyframes vt-ring {
    0% { transform: scale(.8); opacity: .5; }
    100% { transform: scale(1.25); opacity: 0; }
}
.vt-step-dot.done {
    background: var(--vt-green);
    border-color: var(--vt-green);
    color: #fff;
}

/* ============================================================
   上传区域
   ============================================================ */
.vt-upload-area {
    display: block;
    border: 2px dashed var(--vt-line-strong);
    border-radius: 14px;
    padding: 32px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--vt-card-2);
}
.vt-upload-area:hover, .vt-upload-area:active {
    border-color: var(--vt-blue);
    background: var(--vt-blue-tint);
}
.vt-upload-icon {
    font-size: 36px;
    margin-bottom: 8px;
}
.vt-upload-text {
    font-size: 15px;
    font-weight: 700;
    color: var(--vt-ink);
    margin-bottom: 4px;
}
.vt-upload-hint {
    font-size: 12px;
    color: var(--vt-ink-3);
}

/* ============================================================
   文件信息
   ============================================================ */
.vt-file-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background: var(--vt-green-tint);
    border: 1.5px solid var(--vt-green);
    border-radius: 12px;
    margin-top: 12px;
}
.vt-file-icon {
    font-size: 24px;
}
.vt-file-meta {
    flex: 1;
    min-width: 0;
}
.vt-file-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--vt-ink);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.vt-file-duration {
    font-size: 11px;
    color: var(--vt-ink-3);
    margin-top: 2px;
}

/* ============================================================
   按钮
   ============================================================ */
.vt-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 46px;
    padding: 10px 20px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 700;
    font-family: var(--vt-font-body);
    cursor: pointer;
    border: 1.5px solid transparent;
    transition: all .18s ease;
    text-decoration: none;
    -webkit-appearance: none;
    appearance: none;
    letter-spacing: .2px;
}
.vt-btn:active:not(:disabled) { transform: scale(.965); }
.vt-btn:disabled { opacity: .45; cursor: not-allowed; }
.vt-btn-icon { font-size: 16px; }

.vt-btn-primary {
    background: linear-gradient(160deg, var(--vt-blue-2) 0%, var(--vt-blue) 55%, var(--vt-blue-deep) 100%);
    color: #fff;
    box-shadow: var(--vt-shadow-btn), inset 0 1px 0 rgba(255,255,255,.25);
}
.vt-btn-primary:hover:not(:disabled) { filter: brightness(1.08); }

.vt-btn-default {
    background: var(--vt-card);
    color: var(--vt-ink-2);
    border-color: var(--vt-line-strong);
}
.vt-btn-default:hover:not(:disabled) {
    color: var(--vt-blue);
    border-color: var(--vt-blue);
    background: var(--vt-blue-tint);
}

.vt-btn-danger {
    background: var(--vt-card);
    color: var(--vt-red);
    border-color: var(--vt-red);
}
.vt-btn-danger:hover:not(:disabled) { background: var(--vt-red-tint); }

.vt-btn-sm { min-height: 34px; padding: 6px 12px; font-size: 13px; border-radius: 9px; }
.vt-btn-block { width: 100%; }

/* ============================================================
   输入 / 选择器
   ============================================================ */
.vt-select {
    width: 100%;
    padding: 13px 14px;
    border: 1.5px solid var(--vt-line-strong);
    border-radius: 12px;
    font-size: 16px;
    font-family: var(--vt-font-body);
    color: var(--vt-ink);
    background: var(--vt-card);
    transition: border-color .2s ease, box-shadow .2s ease;
    box-sizing: border-box;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}
.vt-select:focus {
    border-color: var(--vt-blue);
    box-shadow: 0 0 0 3px rgba(13,59,220,.14);
}

.vt-setting-row {
    margin-bottom: 16px;
}
.vt-setting-label {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: var(--vt-ink);
    margin-bottom: 8px;
}

/* ============================================================
   进度
   ============================================================ */
.vt-progress-wrap {
    height: 10px;
    background: var(--vt-line);
    border-radius: 999px;
    overflow: hidden;
    margin-bottom: 12px;
}
.vt-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--vt-blue), var(--vt-accent));
    border-radius: 999px;
    transition: width .3s ease;
    position: relative;
}
.vt-progress-bar::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, transparent 30%, rgba(255,255,255,.45) 50%, transparent 70%);
    animation: vt-shimmer 1.6s linear infinite;
}
@keyframes vt-shimmer {
    from { transform: translateX(-100%); }
    to { transform: translateX(100%); }
}
.vt-progress-text {
    font-size: 14px;
    font-family: var(--vt-font-display);
    font-weight: 700;
    color: var(--vt-ink-2);
    text-align: center;
    letter-spacing: 1px;
}

/* ============================================================
   任务列表
   ============================================================ */
.vt-task-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.vt-task-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--vt-card);
    border: 1.5px solid var(--vt-line);
    border-radius: 14px;
    cursor: pointer;
    transition: all .2s ease;
    box-shadow: var(--vt-shadow-1);
    animation: vt-fade-up .4s ease both;
}
.vt-task-item:hover, .vt-task-item:active {
    border-color: var(--vt-blue);
    box-shadow: var(--vt-shadow-2);
}
.vt-task-info {
    flex: 1;
    min-width: 0;
}
.vt-task-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--vt-ink);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-family: var(--vt-font-mono);
}
.vt-task-date {
    font-size: 11px;
    color: var(--vt-ink-3);
    margin-top: 2px;
}
.vt-task-status-badge {
    font-size: 12px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 20px;
    white-space: nowrap;
}
.vt-task-arrow {
    font-size: 20px;
    color: var(--vt-ink-3);
}

/* 状态徽章 */
.status-pending .vt-task-status-badge,
.vt-status-badge.status-pending {
    background: var(--vt-card-2);
    color: var(--vt-ink-3);
}
.status-waiting_target .vt-task-status-badge,
.vt-status-badge.status-waiting_target {
    background: var(--vt-amber-tint);
    color: var(--vt-amber);
}
.status-ready .vt-task-status-badge,
.vt-status-badge.status-ready {
    background: var(--vt-blue-tint);
    color: var(--vt-blue);
}
.status-processing .vt-task-status-badge,
.vt-status-badge.status-processing {
    background: var(--vt-blue-tint);
    color: var(--vt-blue-2);
}
.status-completed .vt-task-status-badge,
.vt-status-badge.status-completed {
    background: var(--vt-green-tint);
    color: var(--vt-green);
}
.status-failed .vt-task-status-badge,
.vt-status-badge.status-failed {
    background: var(--vt-red-tint);
    color: var(--vt-red);
}

.vt-status-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 20px;
}
.vt-task-status {
    margin-bottom: 14px;
}

/* ============================================================
   结果统计
   ============================================================ */
.vt-result-stats {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.vt-stat-item {
    flex: 1;
    min-width: 90px;
    padding: 12px;
    background: var(--vt-blue-tint);
    border: 1px solid var(--vt-blue-line);
    border-radius: 12px;
    text-align: center;
}
.vt-stat-value {
    font-size: 24px;
    font-weight: 700;
    font-family: var(--vt-font-display);
    color: var(--vt-blue);
}
.vt-stat-label {
    font-size: 11px;
    color: var(--vt-ink-3);
    margin-top: 2px;
}

/* ============================================================
   音频对比
   ============================================================ */
.vt-audio-compare {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 16px;
}
@media (max-width: 600px) {
    .vt-audio-compare {
        grid-template-columns: 1fr;
    }
}
.vt-audio-item {
    background: var(--vt-card-2);
    border-radius: 12px;
    padding: 12px;
}
.vt-audio-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--vt-ink);
    margin-bottom: 8px;
}

/* ============================================================
   修正详情
   ============================================================ */
.vt-corrections {
    max-height: 300px;
    overflow-y: auto;
}
.vt-correction-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--vt-card-2);
    border-radius: 8px;
    margin-bottom: 6px;
    font-size: 12px;
}
.vt-correction-time {
    color: var(--vt-ink-3);
    min-width: 80px;
    font-family: var(--vt-font-mono);
}
.vt-correction-note {
    font-weight: 700;
    color: var(--vt-red);
}
.vt-correction-arrow {
    color: var(--vt-ink-3);
}
.vt-correction-target {
    font-weight: 700;
    color: var(--vt-green);
}

/* ============================================================
   加载 / 空状态
   ============================================================ */
.vt-loading,
.vt-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--vt-ink-3);
    font-size: 14px;
}
.vt-spinner {
    width: 40px; height: 40px;
    border-radius: 50%;
    border: 3.5px solid var(--vt-line);
    border-top-color: var(--vt-blue);
    animation: vt-spin .75s linear infinite;
    margin: 0 auto;
}
@keyframes vt-spin { to { transform: rotate(360deg); } }

/* ============================================================
   移动端适配
   ============================================================ */
@media (max-width: 768px) {
    .vt-wrap {
        padding: 12px 12px calc(20px + env(safe-area-inset-bottom));
    }
    .vt-card {
        padding: 16px 14px;
    }
    .vt-upload-area {
        padding: 24px 16px;
    }
}