:root {
    --demo-bg: #f3f6fb;
    --demo-paper: #ffffff;
    --demo-paper-2: #f8fafc;
    --demo-ink: #172033;
    --demo-muted: #64748b;
    --demo-line: #dbe4ef;
    --demo-blue: #2563eb;
    --demo-cyan: #0891b2;
    --demo-green: #059669;
    --demo-amber: #d97706;
    --demo-rose: #e11d48;
    --demo-shadow: 0 14px 34px rgba(15, 23, 42, .08);
}

body {
    background:
        linear-gradient(135deg, rgba(37, 99, 235, .08), transparent 32%),
        linear-gradient(225deg, rgba(8, 145, 178, .08), transparent 30%),
        var(--demo-bg) !important;
    color: var(--demo-ink) !important;
    font-family: "Microsoft JhengHei", "Noto Sans TC", Arial, sans-serif !important;
}

.mv-demo-nav-wrap {
    max-width: 1280px;
    margin: 18px auto 0;
    padding: 0 18px;
}

.mv-demo-nav {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 12px;
    background: rgba(255, 255, 255, .88);
    border: 1px solid var(--demo-line);
    border-radius: 14px;
    box-shadow: var(--demo-shadow);
}

.mv-demo-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 230px;
    color: var(--demo-ink);
}

.mv-demo-brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: #e0f2fe;
    color: var(--demo-blue);
}

.mv-demo-brand strong,
.mv-demo-brand small {
    display: block;
    line-height: 1.25;
}

.mv-demo-brand small {
    color: var(--demo-muted);
    font-size: 12px;
}

.mv-demo-tabs {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    min-width: 0;
}

.mv-demo-tab {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    height: 38px;
    padding: 0 12px;
    border: 1px solid transparent;
    border-radius: 10px;
    color: #334155;
    text-decoration: none !important;
    font-weight: 700;
    font-size: 13px;
}

.mv-demo-tab:hover {
    color: var(--demo-blue);
    background: #eff6ff;
}

.mv-demo-tab.is-active {
    color: #fff;
    background: var(--demo-blue);
    border-color: var(--demo-blue);
}

.mv-shell,
.test-container {
    max-width: 1280px !important;
    margin: 0 auto !important;
    padding: 22px 18px 46px !important;
}

.mv-hero,
.card-header {
    background: linear-gradient(135deg, #ffffff, #eef6ff) !important;
    color: var(--demo-ink) !important;
    border: 1px solid var(--demo-line) !important;
    border-radius: 16px !important;
    box-shadow: var(--demo-shadow) !important;
}

.mv-hero:before,
.mv-hero:after {
    display: none !important;
}

.mv-hero h2,
.card-header h2 {
    color: var(--demo-ink) !important;
    background: none !important;
    -webkit-text-fill-color: currentColor !important;
    letter-spacing: 0 !important;
}

.mv-hero p,
.mv-hero li,
.card-header p {
    color: var(--demo-muted) !important;
}

.mv-card,
.mv-panel,
.step-box,
.result-area {
    background: var(--demo-paper) !important;
    border: 1px solid var(--demo-line) !important;
    border-radius: 14px !important;
    color: var(--demo-ink) !important;
    box-shadow: var(--demo-shadow) !important;
    backdrop-filter: none !important;
}

.mv-card .card-body,
.card-body {
    color: var(--demo-ink) !important;
}

.mv-section-title,
.result-area h5 {
    color: var(--demo-blue) !important;
    letter-spacing: 0 !important;
    text-transform: none !important;
}

.mv-input,
.form-control,
select.form-control,
textarea.form-control,
.form-select {
    background: #fff !important;
    color: var(--demo-ink) !important;
    border: 1px solid #cbd5e1 !important;
    border-radius: 10px !important;
    box-shadow: none !important;
}

.form-control:focus,
.mv-input:focus,
.form-select:focus {
    border-color: var(--demo-blue) !important;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, .14) !important;
}

.text-muted,
.text-secondary,
.small.text-muted {
    color: var(--demo-muted) !important;
}

.mv-pill {
    background: #eff6ff !important;
    border: 1px solid #bfdbfe !important;
    color: #1d4ed8 !important;
    border-radius: 999px !important;
    box-shadow: none !important;
}

.mv-upload-zone,
.voice-upload-zone,
.rec-btn-container {
    background: #f8fafc !important;
    border-color: #cbd5e1 !important;
    color: var(--demo-ink) !important;
}

.subtitle-item {
    background: #fff !important;
    color: var(--demo-ink) !important;
}

.subtitle-text,
.transcript-content {
    color: var(--demo-ink) !important;
}

.waveform-box {
    background: #f8fafc !important;
    border-color: #dbe4ef !important;
}

.nav-pills > li > a {
    background: #eef2ff !important;
    color: #334155 !important;
}

.nav-pills > li.active > a,
.nav-pills > li.active > a:hover,
.nav-pills > li.active > a:focus {
    background: var(--demo-blue) !important;
    color: #fff !important;
}

.demo-feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin: 18px 0;
}

.demo-feature-card {
    background: #fff;
    border: 1px solid var(--demo-line);
    border-radius: 14px;
    padding: 18px;
    box-shadow: var(--demo-shadow);
}

.demo-feature-card i {
    color: var(--demo-blue);
    font-size: 22px;
    margin-bottom: 12px;
}

.demo-feature-card h4 {
    margin: 0 0 8px;
    color: var(--demo-ink);
    font-weight: 800;
}

.demo-feature-card p {
    margin: 0;
    color: var(--demo-muted);
    line-height: 1.7;
}

.mv-demo-code {
    display: block;
    margin: 12px 0 18px;
    padding: 16px;
    background: #0f172a;
    color: #dbeafe;
    border-radius: 12px;
    border: 1px solid #1e293b;
    white-space: pre-wrap;
    word-break: break-word;
}

@media (max-width: 900px) {
    .mv-demo-nav {
        align-items: flex-start;
        flex-direction: column;
    }
    .mv-demo-brand {
        min-width: 0;
    }
    .demo-feature-grid {
        grid-template-columns: 1fr;
    }
}