.fvd-wrapper {
    width: 100%;
    padding: 30px 15px;
    box-sizing: border-box;
}

.fvd-box {
    max-width: 650px;
    margin: 0 auto;
    padding: 30px;
    background: #ffffff;
    border-radius: 18px;
    box-shadow: 0 10px 35px rgba(0,0,0,0.10);
    text-align: center;
    box-sizing: border-box;
}

.fvd-icon {
    width: 65px;
    height: 65px;
    line-height: 65px;
    margin: 0 auto 15px;
    border-radius: 50%;
    background: #1877f2;
    color: #ffffff;
    font-size: 28px;
}

.fvd-box h1 {
    margin: 0 0 10px;
    font-size: 30px;
    line-height: 1.3;
}

.fvd-description {
    color: #666;
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 25px;
}

.fvd-input {
    width: 100%;
    height: 52px;
    padding: 0 15px;
    border: 2px solid #ddd;
    border-radius: 10px;
    font-size: 15px;
    box-sizing: border-box;
    outline: none;
    margin-bottom: 12px;
}

.fvd-input:focus {
    border-color: #1877f2;
}

.fvd-button {
    width: 100%;
    height: 52px;
    border: none;
    border-radius: 10px;
    background: #1877f2;
    color: #ffffff;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
}

.fvd-button:hover {
    opacity: 0.9;
}

.fvd-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.fvd-loading {
    display: none;
    margin-top: 25px;
    color: #555;
}

.fvd-spinner {
    width: 30px;
    height: 30px;
    margin: 0 auto 10px;
    border: 4px solid #ddd;
    border-top-color: #1877f2;
    border-radius: 50%;
    animation: fvd-spin 1s linear infinite;
}

@keyframes fvd-spin {
    100% {
        transform: rotate(360deg);
    }
}

.fvd-message {
    display: none;
    margin-top: 20px;
    padding: 13px;
    border-radius: 8px;
    background: #fff1f1;
    color: #c62828;
    font-size: 14px;
}

.fvd-result {
    display: none;
    margin-top: 25px;
    padding: 20px;
    background: #f5f9ff;
    border-radius: 12px;
}

.fvd-thumbnail {
    display: none;
    width: 100%;
    max-height: 350px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 15px;
}

.fvd-download-link {
    display: block;
    width: 100%;
    padding: 14px;
    box-sizing: border-box;
    background: #16a34a;
    color: #ffffff !important;
    text-decoration: none !important;
    border-radius: 9px;
    font-weight: bold;
}

.fvd-note {
    margin-top: 20px;
    color: #777;
    font-size: 12px;
    line-height: 1.6;
}

@media (max-width: 600px) {

    .fvd-box {
        padding: 22px 16px;
    }

    .fvd-box h1 {
        font-size: 24px;
    }

    .fvd-wrapper {
        padding: 20px 10px;
    }

}