.jv-converter-wrap {
    max-width: 680px;
    margin: 30px auto;
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.jv-converter-title {
    text-align: center;
    font-size: 28px;
    margin: 0 0 10px;
    color: #1a2a4a;
}

.jv-converter-desc {
    text-align: center;
    color: #666;
    font-size: 15px;
    margin: 0 0 25px;
    line-height: 1.5;
}

.jv-converter-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 25px;
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid #1a3a6a;
}

.jv-tab {
    flex: 1;
    padding: 12px 16px;
    border: none;
    background: #fff;
    color: #1a3a6a;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.jv-tab:first-child {
    border-right: 2px solid #1a3a6a;
}

.jv-tab-active {
    background: #1a3a6a;
    color: #fff;
}

.jv-tab:hover:not(.jv-tab-active) {
    background: #e8eef6;
}

.jv-converter-form {
    display: none;
}

.jv-form-active {
    display: block;
}

.jv-form-row {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.jv-field {
    flex: 1;
}

.jv-field label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 14px;
    color: #333;
}

.jv-field select {
    width: 100%;
    padding: 10px 12px;
    border: 2px solid #dde2ea;
    border-radius: 8px;
    font-size: 15px;
    color: #333;
    background: #f8f9fb;
    cursor: pointer;
    transition: border-color 0.2s;
    appearance: auto;
}

.jv-field select:focus {
    outline: none;
    border-color: #1a3a6a;
    background: #fff;
}

.jv-convert-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #1a3a6a, #2a5298);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.3px;
}

.jv-convert-btn:hover {
    background: linear-gradient(135deg, #15305a, #1e4080);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26,58,106,0.3);
}

.jv-convert-btn:active {
    transform: translateY(0);
}

.jv-result {
    margin-top: 25px;
    padding: 20px;
    background: linear-gradient(135deg, #f0f4ff, #e8eef8);
    border-radius: 10px;
    text-align: center;
    border: 1px solid #c8d6ea;
    animation: jv-fadeIn 0.3s ease;
}

@keyframes jv-fadeIn {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.jv-result-label {
    font-size: 14px;
    color: #666;
    margin-bottom: 6px;
    font-weight: 500;
}

.jv-result-date {
    font-size: 26px;
    font-weight: 700;
    color: #1a3a6a;
}

.jv-info {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.jv-info h3 {
    font-size: 17px;
    color: #1a2a4a;
    margin: 0 0 8px;
}

.jv-info p {
    font-size: 14px;
    color: #777;
    line-height: 1.6;
    margin: 0;
}

.jv-error {
    background: #fff0f0 !important;
    border-color: #e8c0c0 !important;
}

.jv-error .jv-result-date {
    color: #c0392b;
    font-size: 16px;
}

@media (max-width: 600px) {
    .jv-converter-wrap {
        margin: 15px;
        padding: 20px;
    }
    .jv-form-row {
        flex-direction: column;
        gap: 12px;
    }
    .jv-converter-tabs {
        flex-direction: column;
    }
    .jv-tab:first-child {
        border-right: none;
        border-bottom: 2px solid #1a3a6a;
    }
    .jv-result-date {
        font-size: 22px;
    }
}