.vs-hero {
    background: linear-gradient(135deg, #1d4ed8, #2563eb);
    color: #fff;
    border-radius: 14px;
    padding: 24px 26px;
    margin-bottom: 18px;
}

.vs-hero h1 {
    margin: 0 0 8px;
    font-size: 22px;
    font-weight: 800;
}

.vs-hero p {
    margin: 0;
    line-height: 1.7;
    font-size: 14px;
    opacity: .96;
}

.vs-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 12px;
}

.vs-card {
    background: #fff;
    border: 1px solid #ecedf3;
    border-radius: 12px;
    padding: 16px 18px;
    margin-bottom: 12px;
}

.vs-card h3 {
    margin: 0 0 12px;
    font-size: 16px;
    color: #1f2937;
}

.vs-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.vs-field label {
    display: block;
    margin-bottom: 6px;
    color: #6b7280;
    font-size: 12px;
}

.vs-field select,
.vs-field input,
.vs-textarea {
    width: 100%;
    border: 1px solid #dbe3ef;
    border-radius: 8px;
    padding: 8px 10px;
    font-size: 14px;
    background: #fff;
}

.vs-textarea {
    min-height: 120px;
    line-height: 1.7;
}

.vs-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.vs-actions button {
    border: 1px solid #dbe3ef;
    background: #f8fafc;
    color: #334155;
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 13px;
    cursor: pointer;
}

.vs-btn-primary {
    background: #2563eb !important;
    border-color: #1d4ed8 !important;
    color: #fff !important;
}

.vs-btn-danger {
    background: #fff1f2 !important;
    border-color: #fecdd3 !important;
    color: #be123c !important;
}

.vs-kpis {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.vs-kpi {
    background: #f8fafc;
    border: 1px solid #e5eaf2;
    border-radius: 10px;
    padding: 10px;
}

.vs-kpi span {
    display: block;
    color: #64748b;
    font-size: 12px;
    margin-bottom: 6px;
}

.vs-kpi strong {
    color: #0f172a;
    font-size: 16px;
}

.vs-hint {
    margin-top: 10px;
    font-size: 13px;
    color: #475569;
    line-height: 1.7;
}

.vs-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.vs-tab {
    border: 1px solid #dbe3ef;
    background: #fff;
    color: #475569;
    border-radius: 999px;
    padding: 7px 12px;
    cursor: pointer;
    font-size: 13px;
}

.vs-tab.active {
    background: #2563eb;
    color: #fff;
    border-color: #2563eb;
}

.vs-queue {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
    flex-wrap: wrap;
    font-size: 12px;
    color: #475569;
}

.vs-pill {
    background: #eff6ff;
    color: #1e40af;
    border-radius: 999px;
    padding: 4px 10px;
}

.vs-study-card {
    border: 1px solid #e8edf6;
    border-radius: 12px;
    padding: 16px;
    background: linear-gradient(180deg, #ffffff, #f9fbff);
}

.vs-word {
    font-size: 28px;
    font-weight: 800;
    color: #1f2937;
    margin-bottom: 8px;
}

.vs-meaning {
    font-size: 16px;
    color: #334155;
    margin-bottom: 10px;
}

.vs-muted {
    font-size: 12px;
    color: #6b7280;
}

.vs-input-row {
    display: flex;
    gap: 8px;
    margin-top: 10px;
}

.vs-input-row input {
    flex: 1;
}

.vs-empty {
    text-align: center;
    padding: 24px;
    color: #64748b;
    background: #f8fafc;
    border-radius: 10px;
    border: 1px dashed #dbe3ef;
}

.vs-wrong-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.vs-wrong-item {
    border: 1px solid #fee2e2;
    background: #fff5f5;
    border-radius: 10px;
    padding: 10px;
}

.vs-wrong-item strong {
    display: block;
    color: #991b1b;
    margin-bottom: 4px;
}

@media (max-width: 768px) {
    .vs-grid, .vs-row, .vs-kpis, .vs-wrong-list {
        grid-template-columns: 1fr;
    }
}

.vs-review-page {
    background: #f3f6fb;
}

.vs-review-wrap {
    max-width: 860px;
    margin: 0 auto;
    padding: 16px 14px 36px;
}

.vs-review-top {
    display: flex;
    gap: 10px;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.vs-back-link {
    color: #1d4ed8;
    text-decoration: none;
    font-size: 13px;
}

.vs-review-app {
    margin-top: 8px;
}

.vs-review-card {
    border: 1px solid #dbe3ef;
    border-radius: 16px;
    background: #fff;
    padding: 24px 22px;
    min-height: 280px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}